Skocz do pozycji: 1.

Tytuł:

Demand forecasting in an enterprise – the forecasted variable selection problem

Autorzy:

Dittmann, Paweł
Sobolewski, Adam Michał

Powiązania:

https://bibliotekanauki.pl/articles/425024.pdf

Data publikacji:

2013

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

demand
demand forecasting
operational measures of demand

Opis:

Forecasting process efficiency depends – to a large extent – on the correct determination of the forecasted variable. Therefore, companies should use for sales forecasting, the variables that reflect actual consumer demand. However in practice, since demand is usually not directly observable, many operational measures of demand are used. In the manufacturing and retail enterprises, the most often used variables are historical orders, shipments, and billed sales volumes. The purpose of this paper is to characterise the effects of using as the predicted variable, different operational measures of consumer demand. Theoretical discussion is illustrated by an attempt to estimate errors in demand forecasts for Avon Cosmetics’ products that are related to changes in data used for forecasting.

Źródło:

Econometrics. Ekonometria. Advances in Applied Data Analytics; 2013, 1(39); 61-70
1507-3866

Pojawia się w:

Econometrics. Ekonometria. Advances in Applied Data Analytics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Elasticity of consumer demand: estimation using a QuadRatic Almost Ideal Demand System
Elastyczność popytu konsumpcyjnego: estymacja na podstawie Quadratic Almost Ideal Demand System

Autorzy:

Gostkowski, Michał

Powiązania:

https://bibliotekanauki.pl/articles/424811.pdf

Data publikacji:

2018

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

complete demand system
Quadratic Almost Ideal Demand System
QUAIDS
elasticity of demand

Opis:

This paper analyzes consumer demand using a Quadratic Almost Ideal Demand System (QUAIDS), which is an extension of an Almost Ideal Demand System (a complete demand system). Complete demand system models can be used to find the relationships that are impossible to discover using single-equation models. Additionally, the QUAIDS model can be used to model a nonlinear Engel curve. The research was based on household microeconomic data collected by GUS (the Polish Central Statistical Office) in the period 1999-2015. The complete demand model has been extended by demographic variable. The results show that the QUAIDS model does not reduce to the AIDS model and is an adequate tool to analyze consumer demand.

Źródło:

Econometrics. Ekonometria. Advances in Applied Data Analytics; 2018, 22, 1; 68-78
1507-3866

Pojawia się w:

Econometrics. Ekonometria. Advances in Applied Data Analytics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

The importance of demographic variables in the modeling of food demand

Autorzy:

Dudek, Hanna

Powiązania:

https://bibliotekanauki.pl/articles/453507.pdf

Data publikacji:

2010

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki

Tematy:

complete demand system
demographic variables
elasticity of demand

Opis:

The general objective of this research is to assess the impact of demographic variables on food demand in Poland. The empirical analysis of this paper is based on the household data, collected by GUS (Central Statistical Office) in the years 2001-2004 (household budget data).

Źródło:

Metody Ilościowe w Badaniach Ekonomicznych; 2010, 11, 1; 60-69
2082-792X

Pojawia się w:

Metody Ilościowe w Badaniach Ekonomicznych

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Demand forecasting in a business based on experts’ opinions – an application of weibull distributions

Autorzy:

Dittmann, Paweł

Powiązania:

https://bibliotekanauki.pl/articles/424785.pdf

Data publikacji:

2013

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

demand
demand forecasting
experts’ opinions
Weibull distribution applications

Opis:

Demand forecasts in a business may be constructed by various methods, e.g. by using Type-I formal models, or by using type-II formal models based on experts’ opinions. The experts can be the business’s managers or persons from outside of the studied business. The experts can not only construct forecasts, but also subjectively specify the probability of them coming true. In this article, the Weibull distribution is described, a distribution that may be applied in the process of constructing product demand forecasts for a business. The methodology for constructing a point forecast is explained, along with the methods for evaluating the chances of the forecast coming true and the methods for judging the probability connected with sales profitability.

Źródło:

Econometrics. Ekonometria. Advances in Applied Data Analytics; 2013, 1(39); 52-60
1507-3866

Pojawia się w:

Econometrics. Ekonometria. Advances in Applied Data Analytics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Legislative barriers to the development of DSR services in Poland
Bariery legislacyjne dla rozwoju usług DSR w Polsce

Autorzy:

Chylmański, P.
Kroczek, A.

Powiązania:

https://bibliotekanauki.pl/articles/397412.pdf

Data publikacji:

2017

Wydawca:

ENERGA

Tematy:

demand management
aggregator
Demand Side Response
zarządzanie popytem
agregator

Opis:

The paper reports steps taken by Enspirion sp. z o.o. to develop DSR services in the Polish market. The authors focused on characterizing the target market, as well as identifying legislative barriers that prevent further development of aggregator activities.
W artykule opisano działania podejmowane przez Enspirion sp. z o.o., zmierzające do rozwoju usług DSR na polskim rynku. Autorzy skupili się na scharakteryzowaniu rynku docelowego, a także wskazaniu barier legislacyjnych, które uniemożliwiają dalszy rozwój działalności podmiotów agregacyjnych.

Źródło:

Acta Energetica; 2017, 2; 17-23
2300-3022

Pojawia się w:

Acta Energetica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Prognozowanie potencjału popytowego dla miejscowości nie posiadających dostępu do sieci kolejowej
Forecasting the demand potential for towns without access to the railway Network

Autorzy:

Chyliński, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/29433514.pdf

Data publikacji:

2022

Wydawca:

Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej

Tematy:

transport kolejowy
popyt
potencjał popytowy
rail transport
demand
demand potential

Opis:

W artykule przedstawiono tło gospodarcze zaniku obsługi pasażerskiej koleją niektórych miast powiatowych na przełomie lat 90-tych ubiegłego stulecia i pierwszej dekady XXI wieku, oraz szanse i możliwości na ponowne ich włączenie w sieć przewozów kolejowych. W związku z procesem realizacji dokumentacji przedprojektowych dla programu „Kolej Plus” obejmującego przywracanie połączeń pasażerskich, omówiono problematykę prognozowania potencjału popytowego w transporcie kolejowym. Przedstawiono prostą metodę szacowania potencjału dla miejscowości, które nigdy takiego połączenia nie miały, bądź utraciły je w wyniku likwidacji linii lokalnych.
The article presents the economic background of the closure of passenger service by rail in some county towns at the turn of the 1990s and the first decade of the 21st century, and the chances and opportunities for their reintroduction into the rail transport network. In connection with the process of realisation of pre-project documentation for the Kolej Plus programme including the restoration of passenger connections, the problem of forecasting the demand potential in railway transport was discussed. A simple method of estimating the potential was presented for towns, which have never had such a connection or have lost it as a result of liquidation of local lines.

Źródło:

Transport Miejski i Regionalny; 2022, 6; 23--26
1732-5153

Pojawia się w:

Transport Miejski i Regionalny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Information demand of foreign labor market from the point of view of Chinese students

Autorzy:

Pilarczyk, Anna
Naprawski, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/692575.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Ekonomiczny w Poznaniu

Tematy:

information-logistics engine
information demand analysis
information demand model
foreign labour market
demand-oriented management of information

Opis:

Today people are faced with a huge amount of information. Demand-oriented management of information can resolve this issue. Therefore, the measures that filter this information are the desired solution.  One of these measures is information demand analysis, which can be easily used for defining problems on the labour market, where the term of talent import is becoming increasingly important. The main contribution of this study is the analysis of the challenges facing the foreign labour market from the point of view of an employee and an employer and a proposal of an information demand model for strengthening the foreign labour market information system. The information demand model is one of the stages of the development of an information-logistics engine, which ensures that the right information is available in the right location, time and quality.

Źródło:

Research Papers in Economics and Finance; 2020, 4, 1; 31-35
2543-6430

Pojawia się w:

Research Papers in Economics and Finance

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Analysis and forecast of passenger flows in public transport - the case of Poland

Autorzy:

Gorzelanczyk, Piotr
Pawłowski, Adrian

Powiązania:

https://bibliotekanauki.pl/articles/22615545.pdf

Data publikacji:

2023

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

demand
urban transport
Polska

Opis:

Public transportation provides its services to both urban centers and neighboring areas in the immediate vicinity of the city. The problem of urban transportation is evident, the number of people willing to use public transportation has decreased. Therefore, there is a need to delve into the issue and conduct an analysis of the demand for urban transportation in Poland in 2000-2030, this will allow us to assess in what direction urban transportation is heading, whether there is an increase in the number of people using it, or whether there is a downward trend (Zielińska 2018). Based on CSO statistics from 2009-2020 for the analysis of demand for public transportation in Poland, a forecast of people using public transportation was conducted using Statistica software for 2021-2030. Due to the situation with the COVID-19 pandemic, the study was conducted in 2 ways – with and without 2020. Public transportation will make less and less profit and even losses for the next few years through rising gasoline and energy prices. Virtually in each of the provinces, and likewise throughout Poland, a decline in the number of people willing to use public transportation is evident. conclusions. On the basis of the surveys carried out, there is a general trend that shows the current state of public transport. In most of the cases studied, a similar conclusion emerges, namely that public transport will experience a marked decline in the coming years. The number of people who want to use public transport will decrease, mainly due to the COVID-19 pandemic and people’s fears for their own safety.

Źródło:

Technical Sciences / University of Warmia and Mazury in Olsztyn; 2023, 26(1); 161--184
1505-4675
2083-4527

Pojawia się w:

Technical Sciences / University of Warmia and Mazury in Olsztyn

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Demand for private health insurance: an empirical study of post-communist countries

Autorzy:

Śliwiński, Adam
Borkowska, Iwona

Powiązania:

https://bibliotekanauki.pl/articles/33735048.pdf

Data publikacji:

2024-07-02

Wydawca:

Szkoła Główna Handlowa w Warszawie. Kolegium Zarządzania i Finansów

Tematy:

health insurance
demand analysis

Opis:

The development of voluntary health insurance is characteristic of post-Communist and CEE countries. The aim of the paper is to identify the factors determining the demand for private voluntary health insurance. The main finding of the research is that the most important factor is the demographic factor. Other factors include the factor related to the ineffectiveness of treatment under universal health insurance, the factor related to health condition, the demographic factor related to longevity, and the factor related to insurance awareness and income. The research confirms conclusions from previously published studies. The most important is to confirm that the income factor positively influences the studied phenomenon. However, the results shed new light on the aspect of the demand factor, as this indicates the ageing of society and the consequent increase in private spending on health, which are the key mechanisms in the discussion, with the other factors constituting a complementary element.

Źródło:

Journal of Management and Financial Sciences; 2023, 50; 109-129
1899-8968

Pojawia się w:

Journal of Management and Financial Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Popyt mieszkaniowy a przestrzeń miejska – przegląd literatury
Housing demand and urban transformations – literature review

Autorzy:

Głuszak, Michał
Marona, Bartłomiej

Powiązania:

https://bibliotekanauki.pl/articles/434652.pdf

Data publikacji:

2013

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

housing
demand
urban structure

Opis:

The article discusses housing demand. We focus on disequilibrium of a urban housing market and location derived segmentation. Based on literature review, we identify reasons behind housing mobility and housing location choice at household level. In the second part of the article we focus on the interaction between housing demand of urban development patterns (especially spatial aspects of it). The main objective of this paper is to show the relationship between two major dimensions of individual housing demand: (i) mobility choice and (ii) location choice and spatial transformations within the metropolitan area. The article is a critical analysis of the literature. We attempt to identify the main factors affecting the demand for housing in a specific metropolitan area. Previous studies point to a number of factors affecting the residential mobility of households. The most important are: the life cycle, relative deprivation, social capital, gender and economic situation. Studies show that these factors are correlated and are subject to mutual interactions. Reflections on diversity and segmentation of metropolitan housing markets lead to the conclusion that the local housing market can be seen as a nested structure. Each metropolitan housing market is divided into submarkets − based on location and housing services quality. The housing search is therefore sequential and hierarchical in nature. Among the most important factors determining the household choice of location within the local housing market are: economic capital, social status, spatial relationships, lifestyle, racial segregation and the quality of schools. The synthesis of the results leads to the conclusion that the demand for housing is related to certain spatial phenomena occurring in metropolitan areas. We highlight four aspects in particular:– – communication system (mass transit, road system, parking in the city center), – spatial order, – access to schools and public services (excessive density of housing and inadequate social infrastructure), – urban sprawl. Due to the information asymmetry and inelastic supply in housing market subsegments it can cause persistent imbalances and emergence of deprived areas within the urban structure.

Źródło:

Ekonomia - Uniwersytet Ekonomiczny we Wroclawiu; 2013, 3 (24); 119-133
2080-5977

Pojawia się w:

Ekonomia - Uniwersytet Ekonomiczny we Wroclawiu

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

FINANCIAL INSURANCE FOR ENTERPRISES – ANALYSIS OF DEMAND AND SUPPLY

Autorzy:

Wicka, Aleksandra

Powiązania:

https://bibliotekanauki.pl/articles/1818403.pdf

Data publikacji:

2020-04-10

Wydawca:

Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach

Tematy:

financial insurance
enterprises
demand

Opis:

The aim of the article is to assess changes in the enterprises’ demand for financial insurance. The analysis covered expenses incurred by business entities on purchase thereof and supply by the entity. Data used in the study came from secondary sources published in studies by the Polish Financial Supervision Authority (KNF), the Polish Chamber of Insurance (PIU) and the Central Statistical Office (GUS). Furthermore, information from the studies-related literature has been included. The time period of studies covered the years 2005–2018. Selected types of insurance included in financial insurance have been presented herein and industries which these products are especially targeted at have been indicated. Moreover, supply by entities has been discussed with an indication of insurers who hold a leading position in the financial insurance sales in Poland. It has been stated that the demand (by value) for financial insurance in the years 2005–2018 was growing. The amount of the gross premium written in 2018 was twice as high as in 2005 and amounted to PLN 1.09 billion. Furthermore, it has been determined that the highest average dynamics of market growth concerned insurance from various financial risks (group 16), which are usually offered jointly with other insurance products, but also the dynamics of expenses incurred on purchasing surety was over 200%, whereas, in 2018 it was even 360%.

Źródło:

Zeszyty Naukowe Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach; 2019, 50, 123; 29-36
2082-5501

Pojawia się w:

Zeszyty Naukowe Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Status prawny mediów spersonalizowanych
The legal status of personalized media

Autorzy:

Skrzypczak, Jędrzej

Powiązania:

https://bibliotekanauki.pl/articles/508589.pdf

Data publikacji:

2015-11-30

Wydawca:

Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania

Tematy:

media spersonalizowane
media on-demand
status prawny mediów sperso-nalizowanych
status prawny video-on demand
status prawny radio-on demand
personalized media
legal status of video-on demand
legal status of radio-on demand

Opis:

Rewolucja technologiczna wywiera ogromny wpływ na sposób funkcjonowania rynku medialnego, ale także na regulacje prawne w tym obszarze. Rozwój medialnych technologii cyfrowych dopro-wadził do stworzenia wielu nowych kategorii przekazów i modyfi kacji tradycyjnych schematów komunikowania. Jednym z najciekawszych przykładów tych zjawisk są tzw. media spersonalizo-wane. Status prawny mediów spersonalizowanych może budzić spore wątpliwości, tym bardziej że odnosi się do wielu płaszczyzn regulacyjnych i rozmaitych instytucji prawnych. Artykuł próbuje rozstrzygnąć jak należy – z punktu widzenia obowiązującego prawa – kwalifi kować taki rodzaj przekazów.
A dynamic development of media-related digital technologies has been observed throughout recent decades. These phenomena are conducive to significant social, economic, political and legal transformations. The development of digital media has led to the creation of many new categories of transfers and modifications of traditional communication patterns. One of the most interesting examples of these phenomena is personalized media. This could be media on-demand, but also media available via streaming, tailored to the needs of a specific recipient. The legal status of personalized media is surrounded by many doubts. This paper focuses on analyzing the legal rules defining the formal status of personalized media in the EU (particularly in the context of the Audiovisual Media Services Directive) as well as in Poland (the Broadcasting Act of 29 December 1992).

Źródło:

internetowy Kwartalnik Antymonopolowy i Regulacyjny; 2015, 4, 7; 8-18
2299-5749

Pojawia się w:

internetowy Kwartalnik Antymonopolowy i Regulacyjny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Ilościowo-jakościowa ocena popytu na rynku hotelowym: propozycja nowego wskaźnika
Quantitative and qualitative assessment of demand on the hotel market: proposal of a new indicator

Autorzy:

Dziedzic, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/529687.pdf

Data publikacji:

2013

Wydawca:

Szkoła Główna Turystyki i Rekreacji

Tematy:

popyt hotelowy
wskaźnik popytu hotelowego
wskaźnik popytu w układzie regionalnym
analiza benchmarkowa popytu
hotel demand
indicator of hotel demand
indicator of demand in regional composition
benchmark analysis of demand

Opis:

W artykule zaprezentowano propozycję nowego wskaźnika oceny popytu na rynku hotelowym. Nowy wskaźnik ma charakter syntetyczny i oprócz elementu ilościowego (liczba udzielonych noclegów lub liczba korzystających) uwzględnia także strukturę jakościową sprzedawanej bazy hotelowej oraz stopień jej wykorzystania (aspekt efektywności). Przedstawiono dane wyjściowe charakteryzujące polski rynek usług noclegowych, przesłanki dla budowy kilkuelementowego, syntetycznego wskaźnika popytu oraz jego założenia metodologiczne. Na tej podstawie dokonano obliczeń wartości wskaźnika opierając się na danych empirycznych zbieranych przez Główny Urząd Statystyczny w latach 2000-2011. Dane opracowano w dwóch grupach: dla całej Polski oraz dla poszczególnych województw. W obu przypadkach pokazano dynamikę zmian na polskim rynku hotelowym. Posłużyło to w ostatniej części artykułu zastosowaniu wskaźnika popytu hotelowego do regionalnej analizy benchmarkowej.
The article proposes a new indicator for the estimation of demand on the hotel market. This new indicator is synthetic in character and, in addition to the quantitative aspect (the number of overnight stays or number of hotel guests), it takes into account the qualitative structure of the offer of hotel beds and their occupancy rate (the effectiveness aspect). The author presents output data characterizing the tourist accommodation market in Poland, prerequisites for building a multifactor synthetic indicator of demand, and the methodological premises thereof. On these grounds indicator values are calculated from empirical data collected by the Central Statistical Office of Poland in 2000-2011. The indicator values are then compiled on two levels: national and regional (according to voivodships). In these two planes the dynamics of changes on the Polish hotel market are shown. In the last part of the article, the hotel demand indicator is used as a tool in regional benchmark analysis.

Źródło:

Problemy Turystyki i Rekreacji; 2013, 1; 5-26
2084-5154

Pojawia się w:

Problemy Turystyki i Rekreacji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

A new approach to maximize the overall return on investment with price and stock dependent demand under the nonlinear holding cost

Autorzy:

Bhadoriya, Amrita
Jani, Mrudul Y.
Chaudhari, Urmila
Tadvi, Aniket C.

Powiązania:

https://bibliotekanauki.pl/articles/2183485.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

deterioration
nonlinear holding cost
price-dependent demand
stock dependent demand
profit/cost ratio

Opis:

This study investigates an inventory model for deteriorating products with a price and stock-dependent demand pattern where the holding cost is a non-linear function of both time and stock level. Moreover, a decreased price and a higher stock level lead to a higher rate of demand. Consequently, in this article, we present a new approach, aiming at maximization of the return on investment by maximizing the profit/cost ratio. If an inventory manager has the potential to invest in a variety of projects, but disposes of only limited resources, it is logical to strategically plan towards a better return on investment. As a result, the manager’s objective will be to develop an inventory policy with a possibly high return on investment. Therefore, a new strategy is considered in this article to optimize the profitability ratio in terms of replenishment time and selling price, which is determined as the proportion between the profit and the overall cost of the inventory scheme. This research demonstrates that optimizing the profitability ratio is equivalent to decreasing the average inventory cost of a product per unit. Also, the optimality is graphically checked and one numerical illustration is discussed to explain the result of the proposed model. Finally, sensitivity analysis of key parameters is performed to show the applicability of the proposed model. The profit/cost ratio is more sensitive to price elasticity markup or purchasing cost compared to the other parameters used. Also, for decision-makers, several helpful management insights are derived.

Źródło:

Control and Cybernetics; 2022, 51, 1; 91--108
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Wastewater Treatment Methods for Effluents from the Confectionery Industry – an Overview

Autorzy:

Zajda, Magdalena
Aleksander-Kwaterczak, Urszula

Powiązania:

https://bibliotekanauki.pl/articles/124113.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

confectionery industry
wastewater treatment
biological oxygen demand
chemical oxygen demand
low-cost material

Opis:

Wastewater from the confectionery industry is characterized by daily and seasonal variability of composition and quantity which adversely affects the process of their disposal. Confectionery plants discharge about 300-500 m³ per month of technological wastewater. Sewage from the confectionery industry belongs to biologically degradable. It is characterized by high values of chemical oxygen demand (COD) and biological oxygen demand (BOD). The article reviews various methods used to treat wastewater from the confectionery industry. Attention was paid to the applicability of a particular method, its advantages and disadvantages and the costs of implementation. The technology of industrial wastewater treatment uses both mechanical and physicochemical methods as well as biological ones. Techniques of sewage treatment usually consist of several stages which use different processes. Low-cost materials such as natural minerals, agricultural waste, industrial waste, biosorbents, and others contribute to the improvement of aerobic sewage conditions. The main weakness of typical sewage treatment plants is their large area, high investment, and exploitation costs. Therefore, a good solution may be the use of the membrane biological reactor which combines the classical technique of activated sludge and filtration on micro-filtering membranes.

Źródło:

Journal of Ecological Engineering; 2019, 20, 9; 293-304
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Optimization of transport potential of the transportation company taking into account random demand for transport services

Autorzy:

Konopacki, Gustaw

Powiązania:

https://bibliotekanauki.pl/articles/94887.pdf

Data publikacji:

2019

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

transport potential
demand
stochastic process

Opis:

Is considered a transport company, which operates a uniform in the sense of destination, means of transport for example tankers, with random exploitation characteristics. The company's transport potential is measured by the number of transportable means of transport for a sufficiently long period of time. The company operates on the market of transport services, where the demand for transport services is also random. The problem of optimizing the transport potential of a transport company is being considered, taking into account the random demand for transport services.

Źródło:

Information Systems in Management; 2019, 8, 1; 15-25
2084-5537
2544-1728

Pojawia się w:

Information Systems in Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Assessment of the degree of fitting the transport potential of the transportation company to a random demand for transport services

Autorzy:

Konopacki, G.

Powiązania:

https://bibliotekanauki.pl/articles/94939.pdf

Data publikacji:

2018

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

transport potential
demand
stochastic process

Opis:

Will be considered transport company exploiting the uniform in the sense of destination, means of transport such as tankers, with a total transport potential equal to a loading units (e.g. tones). The company operates in the transport market, where demand for transport services is random. The problem of fitting the transport potential of a transport company to the demand for such services is formulated. As measure of this fit assumes that the probability of a firm's transport potential is not being exceeded by demand over the given time horizon. Practically useful formulas for estimating such probability for cases where demand for transport services is described by stationary and non-stationary normal stochastic processes. The results are illustrated by numerical examples.

Źródło:

Information Systems in Management; 2018, 7, 2; 120-132
2084-5537
2544-1728

Pojawia się w:

Information Systems in Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

ANALIZA POPYTU KONSUMPCYJNEGO Z WYKORZYSTANIEM MODELU AIDS
ANALYSIS OF THE CONSUMER DEMAND USING THE ALMOST IDEAL DEMAND SYSTEM

Autorzy:

Gostkowski, Michał

Powiązania:

https://bibliotekanauki.pl/articles/453734.pdf

Data publikacji:

2015

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki

Tematy:

kompletny model popytu
prawie idealny układ równań popytowych
AIDS
elastyczność popytu
complete demand system
Almost Ideal Demand System
elasticity of demand

Opis:

W pracy podjęto próbę analizy popytu konsumpcyjnego z wykorzystaniem kompletnego modelu popytu AIDS. Badania zostały oparte na wynikach badań budżetów gospodarstw domowych w okresie 1999-2012. Dodatkowo kompletny model popytu został rozszerzony o zmienną demograficzną oraz o zmienną czasową. W pracy został również poruszony problem zerowych wydatków oraz problem współliniowości zmiennych. Wyniki badań wskazują, że uwzględnienie zmiennych demograficznych oraz zmiennej czasowej istotnie wpływa na oszacowania współczynników elastyczności. Dodatkowo badania wskazały na region wschodni (obejmującym województwa lubelskie, podkarpackie, podlaskie oraz świętokrzyskie) jako region charakteryzujący się najbardziej odmienną strukturą popytu w porównaniu do pozostałych regionów.
The paper attempts to analyze consumer demand using a complete demand system AIDS. The complete demand system is the right tool for the analysis of consumer demand because it takes into account the phenomenon of substitutability and complementarity. The research was based on household microeconomic data collected by GUS (the Polish Central Statistical Office) in the period 1999-2012. Additionally, a complete demand model has been extended by the demographic variable and the time variable. The problem of zero expenditures and the collinearity of variables were described in the paper. The results show that taking into account the phenomena of substitutability and complementarity allows a better understanding of complex interactions occurring in the market for consumer goods and services

Źródło:

Metody Ilościowe w Badaniach Ekonomicznych; 2015, 16, 3; 70-82
2082-792X

Pojawia się w:

Metody Ilościowe w Badaniach Ekonomicznych

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Influence of the demand planning process on logistic system reliability. Case study

Autorzy:

Szozda, N.
Werbińska-Wojciechowska, S.

Powiązania:

https://bibliotekanauki.pl/articles/343820.pdf

Data publikacji:

2011

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

demand planning
logistic system reliability

Opis:

Authors define the main elements affecting the right logistic system performance level and investigate the possible connections between demand process planning quality and logistic system reliability. Thus, the definitions of logistic system reliability are described. Later, an overview of some recent developments in the analyzed research area is provided. In the next point, authors present the main elements affecting the reliable and available logistic system performance. Finally, the paper is ended by the presentation of the obtained analysis results in comparison with the knowledge about the case companies' present condition.

Źródło:

Total Logistic Management; 2011, 4; 147-166
1689-5959

Pojawia się w:

Total Logistic Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Household Money Holdings in the Euro Area: An Explorative Investigation

Autorzy:

Seitz, Franz
von Landesberger, Julian

Powiązania:

https://bibliotekanauki.pl/articles/565699.pdf

Data publikacji:

2014

Wydawca:

Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania

Tematy:

money demand
cointegrated VARs
households

Opis:

In this paper we analyse household holdings of the broad monetary aggregate M3 in the euro area from 1991 until 2009. Households are the largest money-holding sector in the euro area. We develop four models, two in nominal, two in real terms, with satisfactory economic and statistical properties. The main determinants are a transactions variable, wealth considerations, opportunity costs and uncertainty. In particular housing wealth is found to play an important role. The models are robust to different estimation strategies, samples considered and a multitude of misspecification tests. According to our analysis, it is quite apparent that in equilibrium, households jointly determine consumption and broad money holdings which are both influenced by wealth as well as interest rates. The importance of household money holdings for consumption expenditures may cast doubt on a purely passive role for money.

Źródło:

Journal of Banking and Financial Economics; 2014, 2(2); 83-115
2353-6845

Pojawia się w:

Journal of Banking and Financial Economics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Non-Uniformity of Water Demands in a Rural Water Supply System

Autorzy:

Gwoździej-Mazur, Joanna
Świętochowski, Kamil

Powiązania:

https://bibliotekanauki.pl/articles/125303.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

rural water supply
demand pattern

Opis:

The increasingly frequent use of computer simulations for the calculations concerning the water supply systems requires accounting for the demand patterns. Determining the coefficients of daily and hourly non-uniformity is indispensable for the correct designing or modernization of pipes in the water supply network. The first goal of article was to obtain the non-uniformity index for the preparation of hydraulic models in rural water systems called "N" system and "CWK" system. In this article, the authors present the results of the water consumption analysis in two rural water supply systems. The article presents the water consumption non-uniformity factors calculated over the course of a year, a month and a day. The article also included the calculated water demand curves over the course of a day, showing the variability of water demand with characteristic morning and evening water consumption peaks and changes of the consumption curve in the prospective development of the water supply network, where industrial consumers would become the main water consumers. The research material consisted of the water consumption measurements in two rural water supply networks situated in northeastern Poland, taken over the years 2010-2017. The article also shows the water demand curves in the studied rural water supply networks for every day of the week. The values of minimum and maximum hourly non-uniformity coefficients were compared to the mean value of these coefficients. The changes in the values of minimum and maximum hourly coefficients with respect to the mean value for the given hour may differ from -89% to +85% for hours of minimum demand. The changes in the values of minimum and maximum hourly coefficients with respect to the mean value for the given hour may differ from -16% to +30% for hours of maximum demand.

Źródło:

Journal of Ecological Engineering; 2019, 20, 8; 245-251
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

An analysis of the demand for fresh fruit in Scotland
Analiza popytu na świeże owoce w Szkocji

Autorzy:

Revoredo-Giha, C.
Florkowski, W.J.

Powiązania:

https://bibliotekanauki.pl/articles/867041.pdf

Data publikacji:

2013

Wydawca:

The Polish Association of Agricultural and Agribusiness Economists

Tematy:

demand analysis
fresh fruit
fruit
Scotland
price change
household
United Kingdom
market
demand system

Opis:

The purpose of this study is to analyse the demand for fresh fruits in Scotland in order to provide evidence about their sensitivity to changes in prices and income. Six fresh fruit categories were studied using time series for the period 2006 to 2011: citrus, apples and pears, bananas, grapes, soft fruit, a residual category and other fruits. The series were constructed from a consumer panel that reports weekly purchases by approximately 1300 households and which allowed to construct thirteen periods of four weeks each year. The demand for fruits was modelled using a dynamic version of the Almost Ideal Demand System. Short term and long term conditional elasticities (Marshallian, Hicksian and expenditure) were estimated. The results from the long term elasticities indicated the demand for all the categories were sensitive to changes in prices. Grapes and soft fruits were the most price elastic fruits. In addition, whilst all the expenditure elasticities were positive, the elasticity of citrus was greater than one, apple and pears, bananas and grapes were approximately one and soft fruit and other fresh fruits were less than one.
Badano popyt na świeże owoce w Szkocji w celu określenia zachowań konsumentów względem zmian cen owoców oraz dochodów. Przeanalizowano ceny sześciu grup świeżych owoców w latach 2006-2011: cytrusów, jabłek i gruszek, bananów, winogron, owoców miękkich oraz pozostalycyh. Bazowano na danych dotyczących tygodniowych wydatków około 1300 gospodarstw domowych, dzięki czemu możliwe było stworzenie trzynastu czterotygodniowych przedziałów czasowych dla każdego roku. Popyt na owoce obliczany byl za pomocą dynamicznej wersji Almost Ideał Demand System. Oszacowano krótką i długoterminową elastyczność zależną (Marshallian, Hicksian i wydatki). Wyniki długoterminowej elastyczności wykazały, że popyt zależał od zmian cenowych we wszystkich kategoriach owoców. Winogrona oraz owoce miękkie miały najbardziej elastyczne ceny. Oszacowana elastyczność wydatków była dodatnia i dla cytrusów była większa niż jeden, dla jabłek i gruszek, bananów i winogron wynosiła około jeden, a dla owoców miękkich i pozostałych świeżych owoców była mniejsza niż jeden.

Źródło:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2013, 15, 3
1508-3535
2450-7296

Pojawia się w:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Wielokryterialna optymalizacja zużycia energii na chłodzenie w budynkach wielkopowierzchniowych
Multiobjective optimization of cooling energy usage in large-floor-area buildings

Autorzy:

Gawin, D.
Woźniak, P.

Powiązania:

https://bibliotekanauki.pl/articles/104646.pdf

Data publikacji:

2017

Wydawca:

Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza

Tematy:

algorytmy genetyczne
Demand-Side Management
Model Predictive Control
precooling
genetic algorithms
demand side management

Opis:

Poszukując optymalnego sposobu eksploatacji budynku, występują trudności w znalezieniu rozwiązania charakteryzującego się jak najmniejszym zużyciem energii, przy jednoczesnym zapewnieniu komfortu cieplnego ludziom w nim przebywającym, ponieważ kryteria te są sobie przeciwstawne. Sprowadza się to do rozwiązania problemu optymalizacji wielokryterialnej i wyznaczenia zbioru punktów optymalnych, stanowiących kombinację danych parametrów wejściowych do symulacji. Do takiej sytuacji dochodzi coraz częściej w okresie letnim, gdy temperatura operatywna w budynku na skutek działania wysokich wartości temperatur powietrza zewnętrznego i natężenia promieniowania słonecznego, przekracza dopuszczalne normy. Powszechnie stosowane instalacje chłodzenia w budynkach użyteczności publicznej powinny więc zostać poddane optymalizacji, zarówno na etapie projektowania, jak i eksploatacji, polegającej na doborze parametrów określających ich działanie. W niniejszym artykule pokazano zastosowanie algorytmów genetycznych do powyższego zagadnienia optymalizacji wielokryterialnej dla przypadku sklepu wielkopowierzchniowego, zakładając dostępność do prognozowanych danych pogodowych z wyprzedzeniem 24-godzinnym. Dodatkowo, harmonogramy pracy instalacji chłodzenia zostały dobrane w sposób uwzględniający zarządzanie stroną popytową w sposób minimalizujący pobieranie energii elektrycznej w okresie największego obciążenia sieci elektroenergetycznej. Z obliczeń otrzymano kombinacje parametrów wejściowych, pozwalających na zmniejszanie kosztów eksploatacyjnych przy zastosowaniu zmiennej taryfy energetycznej, jednocześnie zapewniając komfort termiczny przez cały okres pracy budynku i pobierając energię elektryczną w sposób bardziej równomierny w ciągu doby. Dowodzi to zasadności podjętych badań i możliwości zastosowania powyższej procedury w zarządzaniu rzeczywistych obiektów wielkopowierzchniowych przy użyciu skalibrowanych z nimi modeli komputerowych.
While searching for an optimal way of building exploitation, the difficulty in finding a solution characterized by the lowest energy consumption with simultaneously assuring thermal comfort of the people inside arises. The solution aiming at meeting the two contrary criteria results in application of multi-objective optimization through determining the set of optimal points being a combination of simulation entry parameters. Assuring thermal comfort of the people inside a building is especially inconvenient in summer, when the building’s operative temperature exceeds allowable standards due to influence of high exterior air temperature and solar radiation intensity. Hence, commonly utilized air - conditioning systems should undergo optimization at the stage of both design and during exploitation based on the proper operating parameters choice. This paper analyzes the usage of genetic algorithms in the multi-objective optimization of a large – floor – area store assuming the access to weather conditions forecasted in 24 – hour advance. Furthermore, the HVAC system work schemes were set in a way including the minimization of electrical energy consumption in the peak hours of the power system demand. The performed calculations made it possible to obtain the combination of entry parameters allowing mitigation of exploitation costs through variable electrical energy tariff as well as assuring thermal comfort within the whole building’s operation period while consuming the electrical energy in a more sustainable way. The results prove validity of the undertaken research and possibility of application of the aforementioned procedure in a control system of real large – floor – area buildings, taking advantage of their calibrated computational models.

Źródło:

Czasopismo Inżynierii Lądowej, Środowiska i Architektury; 2017, 64, 1; 7-14
2300-5130
2300-8903

Pojawia się w:

Czasopismo Inżynierii Lądowej, Środowiska i Architektury

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

POPYT NA ALKOHOL W POLSCE: WYNIKI ESTYMACJI MODELU QUAIDS
DEMAND FOR ALCOHOL IN POLAND: RESULTS BASED ON QUAIDS MODEL

Autorzy:

Wolak, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/453890.pdf

Data publikacji:

2015

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki

Tematy:

cenowe i dochodowe elastyczności popytu
popyt na alkohol
QUAIDS
demand for alcohol
demand elasticises

Opis:

Artykuł jest poświęcony analizie popytu na napoje alkoholowe w Polsce. Na podstawie danych rocznych, obejmujących lata 1961–2013, przeprowadzono estymację modelu QUAIDS i w konsekwencji otrzymano oszacowania cenowych i dochodowych elastyczności popytu na wyroby spirytusowe, piwo i wino. Uzyskane wskaźniki wskazują na to, że rozważane rodzaje alkoholu są dobrami normalnymi o popycie nieelastycznym.
"This paper is focused on the analysis of demand for alcoholic beverages in Poland. Based on of annual data, covering the period 1961–2013, QUAIDS model was estimated. The obtained estimates of price and income elasticity of demand for spirits, beer and wine suggest that presented types of alcohol are normal goods with inelastic demand. "

Źródło:

Metody Ilościowe w Badaniach Ekonomicznych; 2015, 16, 4; 211-219
2082-792X

Pojawia się w:

Metody Ilościowe w Badaniach Ekonomicznych

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Analiza popytu na kwalifikacje i kompetencje w województwie podlaskim
The Analysis of Demand for Skills and Qualifications in the Podlaskie Province

Autorzy:

Bagieńska, Anna

Powiązania:

https://bibliotekanauki.pl/articles/592154.pdf

Data publikacji:

2013

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Kwalifikacje pracowników
Popyt na pracę
Popyt na pracowników
Demand for workers
Labour demand
Qualifying employees

Opis:

The success in contemporary economy relies on the company's competitiveness, its fast development and the implementing of new technologies. The development of a knowledge-based economy requires appropriate human resources. Economic growth necessitates the enhancement of the quality of human capital through training, continuing education and the development of employees. The objective of this chapter is to highlight the demand for jobs, skills and competencies in the Podlaskie province, through the analysis in terms of jobs required by employers of qualifications and competences, and analyze the causes of the mismatch of supply, particularly among university graduates. Job analysis has emerged a list of key competencies, personality traits, the formal and additional courses. Quantitative research conducted in a group of employers pointed to the missing graduates of various fields of study skills. They show that the greatest "weakness" of graduates is the lack of practice, which can be reduced only by a larger number of practices and student internships.

Źródło:

Studia Ekonomiczne; 2013, 134; 31-40
2083-8611

Pojawia się w:

Studia Ekonomiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Influence of the Demand Planning Process on Logistic System Reliability. Case Study

Autorzy:

Szozda, Natalia
Werbińska-Wojciechowska, Sylwia

Powiązania:

https://bibliotekanauki.pl/articles/504072.pdf

Data publikacji:

2011

Wydawca:

Międzynarodowa Wyższa Szkoła Logistyki i Transportu

Tematy:

demand planning process
reliability
logistic system

Opis:

Authors define the main elements affecting the right logistic system performance level and investigate the possible connections between demand process planning quality and logistic system reliability. Thus, known in the literature definitions of logistic system reliability are characterized. Later, an overview of some recent developments in the analyzed research area is provided. In the next point, authors present the main elements affecting the reliable and available logistic system performance. Finally, the paper is ended by the presentation of the obtained analysis results in comparison with the knowledge about the case companies’ present condition.

Źródło:

Logistics and Transport; 2011, 13, 2; 79-92
1734-2015

Pojawia się w:

Logistics and Transport

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Międzynarodowa konkurencyjność sieci popytu - innowacje poprzez cloud computing

Autorzy:

Nowicka, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/630417.pdf

Data publikacji:

2017

Wydawca:

Szkoła Główna Handlowa w Warszawie

Tematy:

Demand, Cloud computing, Innovations, Supply chain

Opis:

In today's economy supply chains are frequently transforming into international demand networks. Cloud computing is the answer to the main challenges posed by creation and management of flexible and adaptive global demand networks. Cloud computing is a tool that forms a link between technology and business, and thus innovatively improves competitiveness of international supply chains while supporting development of individual economic entities regardless of their size and scale of activities. Cloud computing is the basis for the development of the economy of sharing, mass customization, social networks, systems infrastructure and communications of individual companies and those of international supply chains. The article presents the possibilities of using cloud computing in supporting development of innovation in management of international demand networks. The article elaborates on whether cloud computing is an innovation, or rather just a tool to introduce innovations and what is the extent of the impact of its use on the level of innovation in international demand networks

Źródło:

Kwartalnik Kolegium Ekonomiczno-Społecznego Studia i Prace; 2017, 4; 135-150
2082-0976

Pojawia się w:

Kwartalnik Kolegium Ekonomiczno-Społecznego Studia i Prace

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Zautomatyzowane zarządzanie zapotrzebowaniem w ogniwach sieci dystrybucyjnej - studium przypadku
Automated demand management in the cells of the distribution network - case study

Autorzy:

Milewska, E.

Powiązania:

https://bibliotekanauki.pl/articles/325893.pdf

Data publikacji:

2015

Wydawca:

Politechnika Śląska. Wydawnictwo Politechniki Śląskiej

Tematy:

dystrybucja
prognozowanie
popyt
distribution
forecasting
demand

Opis:

Artykuł przedstawia zagadnienie prognozowania popytu w ogniwach sieci dystrybucyjnej przeprowadzanego na podstawie archiwalnych danych dokumentów sprzedaży wybranej firmy. Celem analizy była budowa rozwiązania umożliwiającego zautomatyzowanie procesu identyfikacji popytu w punktach sprzedaży detalicznej oraz usprawnienie organizacji procesu dostaw przez wykorzystanie narzędzia informatycznego wspomagającego kompletację ładunków zaopatrzenia towarowego.
The paper presents the problem of forecasting the demand in the cells of the distribution network carried out on the basis of archival data chosen company sales documents. The aim of the analysis was to build a solution to automate the identification of demand in retail stores and streamlining the organization of the supply through the use of IT tools supporting the completion of the supply of goods.

Źródło:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2015, 80; 189-201
1641-3466

Pojawia się w:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Determinants of tourism demand in Greece: a panel data approach

Autorzy:

Agiomirgianakis, George M.
Sfakianakis, George

Powiązania:

https://bibliotekanauki.pl/articles/425243.pdf

Data publikacji:

2014

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

tourism demand
panel data
macroeconometric approach

Opis:

This paper aims at investigating the determinants of tourism demand in Greece over eight years (2004-2011). Tourism is the main industry of Greece as its share in the Greek economy varies from 15% to 20% of GDP whether measured directly or indirectly respectively. We opted for a macroeconometric approach and, in particular, building on the existing literature we used panel data estimation techniques with disaggregated data on the country (or area) of origin combined with macroeconomic aggregates, indicators and (relative) price indices. The specific econometric techniques used take into account both the statistical properties of variables and the differences between the various cross sections. The main conclusion of the paper is that the macroeconometric panel data approach to explaining tourist receipts provides a rather satisfactory model fit, with explanatory variables explaining a significant part of the variability of the dependent variable. Our findings also suggest that certain policy directions identified by Greek governments (both in the present and past), such as enhancing competitiveness and the outward orientation of the economy, may indeed affect positively the prospects of the Greek tourism sector.

Źródło:

Econometrics. Ekonometria. Advances in Applied Data Analytics; 2014, 1(43); 15-26
1507-3866

Pojawia się w:

Econometrics. Ekonometria. Advances in Applied Data Analytics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Demand driven material requirements planning. Some methodical and practical comments

Autorzy:

Pekarčíková, Miriam
Trebuňa, Peter
Kliment, Marek
Trojan, Jozef

Powiązania:

https://bibliotekanauki.pl/articles/406796.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

demand
supply chain
DDMRP
buffer
inventory

Opis:

Industry 4.0 will affect the complexity of supply chain networks. It will be necessary to adapt more and more to the customer and respond within a time interval that is willing to accept the product waiting. From these considerations, there is a need for a different way of managing the supply chain. The traditional concept of supply chain as a linear system, which allows optimizing individual subsystems, thus obtaining an optimized supply chain, is not enough. The article deals with the issue of supply chain management reflecting demand behaviour using the methodology Demand Driven MRP system. The aim of the publication is to extend the knowledge base in the area of demand-driven supply logistics in the context of Industry 4.0 and verify the processed theoretical knowledge in a case study.

Źródło:

Management and Production Engineering Review; 2019, 10, 2; 50--59
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Regression model of water demand for the city of Lodz as a function of atmospheric factors

Autorzy:

Domański, Czesław
Kubacki, Robert

Powiązania:

https://bibliotekanauki.pl/articles/2107156.pdf

Data publikacji:

2022-06-14

Wydawca:

Główny Urząd Statystyczny

Tematy:

water demand
atmospheric factors
regression model

Opis:

One of the Sustainable Development Goals (Goal 6) set by the United Nations is to provide people with access to water and sanitation through sustainable water resources management. Water supply companies carrying out tasks commissioned by local authorities ensure there is an optimal amount of water in the water supply system. The aim of this study is to present the results of the work on a statistical model which determined the influence of individual atmospheric factors on the demand for water in the city of Lodz, Poland, in 2010-2019. In order to build the model, the study used data from the Water Supply and Sewage System Company (Zakład Wodociągów i Kanalizacji Sp. z o.o.) in the city of Lodz complemented with data on weather conditions in the studied period. The analysis showed that the constructed models make it possible to perform a forecast of water demand depending on the expected weather conditions.

Źródło:

Statistics in Transition new series; 2022, 23, 2; 153-161
1234-7655

Pojawia się w:

Statistics in Transition new series

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

DEMAND FORECAST WITH BUSINESS CLIMATE INDEX FOR A STEEL AND IRON INDUSTRY REPRESENTATIVE

Autorzy:

Barska, Magdalena

Powiązania:

https://bibliotekanauki.pl/articles/453455.pdf

Data publikacji:

2014

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki

Tematy:

demand forecasting
SARIMAX
business climate indicator

Opis:

The steel and iron industry production is dedicated to serve other industries mainly. This makes the exercise of demand forecasting different than for consumer goods. The common sense says that demand fluctuations are influenced by general economic soundness. An attempt was made to address the question of improving forecast’s accuracy by adding a business cycle indicator as an input variable. The SARIMAX model was applied. Including a business climate indicator improved model’s performance, however no co integration is observed between the two series.

Źródło:

Metody Ilościowe w Badaniach Ekonomicznych; 2014, 15, 2; 27-36
2082-792X

Pojawia się w:

Metody Ilościowe w Badaniach Ekonomicznych

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Influence of a season on hourly and daily variations in water demand patterns in a rural water supply line – case study
Ocena wpływu pory roku na zmienność dobowego i godzinowego zapotrzebowania na wodę w wodociągu wiejskim – studium przypadku

Autorzy:

Bergel, T.
Szeląg, B.
Woyciechowska, O.

Powiązania:

https://bibliotekanauki.pl/articles/292293.pdf

Data publikacji:

2017

Wydawca:

Instytut Technologiczno-Przyrodniczy

Tematy:

amount and irregularities demand
municipal water supply system
water demand
water demand peaks
szczyty poboru wody
wartość i nierównomierność zapotrzebowania
wodociągi wiejskie
zapotrzebowanie na wodę

Opis:

This article presents the results of a study on hourly and daily variations in water demand patterns, depending on a season. The study was conducted in the years 2014–2015 on a selected rural water supply line. The analysis was based on values of hourly water demand as measured by a water meter coupled with a recording device. The research showed that both the volume and fluctuations in daily water demand were higher in the spring and the summer, versus the autumn and the winter. This was most probably caused by water consumption for additional purposes, specific for rural areas. Individual water demand was the highest in the summer, and the lowest in the winter. Two peaks for hourly water demand were determined for the analyzed seasons. The morning peak always occurred at 7 a.m. on working days, while on days off work it fell at 9 a.m. or 10 a.m., depending on the season. The evening peak always fell at 8 p.m., regardless of a season or a day of a week. On working days, the evening peak was always higher than the morning one, while on days off work the morning peak was higher than the evening one in the autumn and in the winter, and both peaks were the same in the spring and in the summer.
W artykule przedstawiono analizę wyników badań zmienności dobowego i godzinowego zapotrzebowania na wodę w wybranym wodociągu wiejskim. Wykonano ją dla dni tygodnia i pór roku w latach 2014–2015. Podstawą do przeprowadzenia analizy były wartości godzinowego zapotrzebowania na wodę zmierzone za pomocą wodomierza współpracującego z rejestratorem zamontowanego na przewodzie odpływowym z początkowego zbiornika sieciowego. Przeprowadzone badania wykazały, że wartość i nierównomierność dobowego zapotrzebowania na wodę była większa wiosną i latem niż jesienią i zimą. Najbardziej prawdopodobną przyczyną takiego stanu było występowanie celów dodatkowych zużycia wody, charakterystycznych dla terenów wiejskich. Jednostkowe zapotrzebowanie na wodę największe wartości przyjmowało latem, a najmniejsze zimą. W analizowanych porach roku stwierdzono występowanie dwóch szczytów godzinowego zapotrzebowania na wodę. W dni powszednie szczyt poranny przypadał zawsze na godzinę 7, natomiast w dni wolne od pracy, w zależności od pory roku, na godzinę 9 lub 10. Z kolei bez względu na porę roku i dzień tygodnia szczyt wieczorny przypadał zawsze na godzinę 20. W dni powszednie szczyt wieczorny był zawsze większy od szczytu porannego, natomiast w dni wolne od pracy zimą i jesienią szczyt poranny był większy od wieczornego, a latem i wiosną wartości szczytowe były takie same.

Źródło:

Journal of Water and Land Development; 2017, 34; 59-64
1429-7426
2083-4535

Pojawia się w:

Journal of Water and Land Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

The Evaluation of the Demand for Services Provided by Travel Guides and Tour Leaders

Autorzy:

Kruczek, Zygmunt
Mazanek, Leszek
Czulińska-Bukowska, Anna

Powiązania:

https://bibliotekanauki.pl/articles/1391063.pdf

Data publikacji:

2019

Wydawca:

Wyższa Szkoła Bankowa w Poznaniu

Tematy:

travel guides
tour leaders
services
demand

Opis:

This article presents the results of empirical research on the labour market of city travel guides, regional guides and mountain guides as well as tour leaders. The aim of this article is to evaluate the demand for the services of travel guides and tour leaders. The study included tourism entrepreneurs and the method of a diagnostic survey with the use of computer-assisted telephone interviewing (CATI) was applied. The obtained results confirmed the thesis that the labour market of travel guides and tour leaders is not stable and this is due to the seasonality, level of earnings and changing model of travel organization. The study also showed that in the five-year period from the deregulation of the professions, the market relations between travel guides and tour leaders on the one hand and tourism entrepreneurs on the other did not undergo fundamental changes. The results of the study may be useful for tour operators, organisations associating travel guides and tour leaders as well as for tourism administration at the central and regional level.

Źródło:

Studia Periegetica; 2019, 28(4); 57-72
1897-9262
2658-1736

Pojawia się w:

Studia Periegetica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Surogatka is already a cliché occupation, whether social demand

Autorzy:

Antoni, Olak,
Antoni, Krauz,

Powiązania:

https://bibliotekanauki.pl/articles/891406.pdf

Data publikacji:

2018-08-17

Wydawca:

Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie

Tematy:

Surrogate
mother
children
profession
social demand

Opis:

In given article a brief characterization of the issue as new surrogates calculates the surrogate mother. The survey was carried out, the analysis of the phenomenon on the basis of the available literature, online content of legal documents. Shows trends, reviews, as well as societal demands in terms of the needs and the new role of the use of surrogate mothers in the in vitro.

Źródło:

Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje; 2016, 21; 179-192
2299-4033

Pojawia się w:

Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Artificial Intelligence Methods in Spare Parts Demand Forecasting

Autorzy:

Rosienkiewicz, Maria

Powiązania:

https://bibliotekanauki.pl/articles/504136.pdf

Data publikacji:

2013

Wydawca:

Międzynarodowa Wyższa Szkoła Logistyki i Transportu

Tematy:

lumpy demand
forecasting
ANN
Artificial Intelligence

Opis:

The paper discusses the problem of forecasting lumpy demand which is typical for spare parts. Several prediction methods are presented in the article – traditional techniques based on time series and advanced methods that use Artificial Intelligence tools. The research conducted in the paper focuses on comparison of eight forecasting methods, including classical, hybrid and based on artificial neural networks. The aim of the paper is to assess the efficiency of lumpy demand forecasting methods that apply AI tools. The assessment is conducted by a comparison with traditional methods and it is based on Root Mean Square Errors (RMSE) and relative forecast errors (ex post) values. The article presents also a new approach to the lumpy demand forecasting issue – a method which combines regression modelling, information criteria and artificial neural networks.

Źródło:

Logistics and Transport; 2013, 18, 2; 41-50
1734-2015

Pojawia się w:

Logistics and Transport

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Simulation Methods Application for LPG Deliveries Planning and Scheduling to the Network of Stations Under Demand Uncertainty

Autorzy:

Karkuła, Marek
Kaleta, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/504144.pdf

Data publikacji:

2017

Wydawca:

Międzynarodowa Wyższa Szkoła Logistyki i Transportu

Tematy:

VMI
VRP
IRP
DES
variable demand

Opis:

In our paper we considered the problem of demand uncertainty and its influence on planning and scheduling of LPG deliveries. The experience of specialized transportation company in charge of LPG deliveries for the domestic supplier network under VMI approach was analyzed. High variability of distribution parameters and frequent orders modifications were observed while small stations tanks capacities comparing to high daily LPG sales volumes were considered. The combined use of simulation and optimization methods was proposed for the case of LPG distribution to the petrol stations network. The demand uncertainty at customers' stations was considered. Simulation models were assumed to be efficient for dynamic and robust delivery plans of LPG distribution. The results of computational experiments were presented for different values of coefficient of variation.

Źródło:

Logistics and Transport; 2017, 34, 2; 63-78
1734-2015

Pojawia się w:

Logistics and Transport

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Wpływ popytu na akcje notowane na Giełdzie Papierów Wartościowych w Warszawie na płynność rynku
The Influence of the Demand for Warsaw Stock Exchange-Listed Shares on the Market’s Liquidity

Autorzy:

Nawrot, Wioletta

Powiązania:

https://bibliotekanauki.pl/articles/575659.pdf

Data publikacji:

2006-08-31

Wydawca:

Szkoła Główna Handlowa w Warszawie. Kolegium Analiz Ekonomicznych

Tematy:

shares
demand
stock exchange
liquidity
market

Opis:

The author analyzes the demand for shares and attempts to determine its influence on the liquidity of the Warsaw Stock Exchange. The analysis was conducted by calculating and bringing together values of key importance to the liquidity of the market and investment activity on the Polish stock market. The analysis showed that the liquidity of the Polish stock market decreased in the analyzed period (1995-2005). First, there was a drop in the value of stock trades in relation to the market’s capitalization. Subsequently, there was a problem involving the substantial concentration of trade on the exchange. On the basis of this situation, attempts were made to check the demand side of the stock market, especially in the institutional investor segment. Analyses conducted by the author indicate that, as a result of a dynamic increase in pension and investment fund assets in 2000-2005, these institutions substantially increased the value of shares in their possession, withdrawing some of the stock from “active” turnover. Over the next few years, more than 40% of the assets invested by these institutions in stock were tied up in the portfolios of open-ended pension funds. However, in the years that followed, assets held by institutional investors were subject to decreased turnover. This seems to indicate that institutional investors could pose a threat to the market’s liquidity by channeling substantial assets to the domestic stock market in a situation in which the supply of shares was insufficient. However, a supplementary examination of the average turnover in WSE-listed shares, particularly those making up the market’s free float, revealed that the activity of institutional investors, though decreasing with each passing year, was several times higher than average investment activity on the stock market. In other words, transactions made by institutional investors were the key driving force behind the market’s liquidity in the analyzed period. Unfortunately, the positive influence of institutional investors decreased in 2003-2005, a period that saw a major increase in pension and investment fund assets. The insufficient-and continually decreasing-liquidity of the stock market, coupled with the dynamic development of the institutional investor segment, particularly pension funds, justifies worries over the liquidity and stable development of the Polish stock market.

Źródło:

Gospodarka Narodowa. The Polish Journal of Economics; 2006, 209, 7-8; 59-81
2300-5238

Pojawia się w:

Gospodarka Narodowa. The Polish Journal of Economics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Popyt jako instrument kształtowania porządku świata
Crisis of the essence of capitalism

Autorzy:

Piontek, Barbara

Powiązania:

https://bibliotekanauki.pl/articles/465315.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Komitet Prognoz Polska 2000 Plus PAN

Tematy:

gospodarka postindustrialna
popyt
postindustrial economy
demand

Opis:

Wraz z przejściem od gospodarki industrialnej do gospodarki postindustrialnej, większość z istniejących wcześniej barier gospodarczych straciło na znaczeniu. Dotyczy to w szczególności popytu, który może stać się narzędziem budowania ładu i urządzania świata, pod warunkiem rozbudowy różnych metod jego kształtowania. Ważna jest przy tym w szczególności kategoria popytu ciągnionego.
The change from industrial to postindustrial economy abolished many barriers functioning before. This concerns in particular demand that can become a tool shaping the order of the world provided it will be appropriately shaped itself. Especially important in that is the category of demand pull.

Źródło:

Przyszłość. Świat-Europa-Polska; 2013, 2; 52-57
1895-0949

Pojawia się w:

Przyszłość. Świat-Europa-Polska

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Estimation of inter-city travel demand for public road transport in Nigeria

Autorzy:

Dike, D. N.
Ibe, C. C.
Ejem, A. E.
Erumaka, O.
Chukwu, O. E.

Powiązania:

https://bibliotekanauki.pl/articles/2140965.pdf

Data publikacji:

2018

Wydawca:

Fundacja Centrum Badań Socjologicznych

Tematy:

inter-city
demand
transport
elasticities
passenger

Opis:

This research develops an urban travel demand model for 19 directional O-D city-pair from Owerri Urban. Using revealed preference data from the period of 2014 to 2016 operated by sixteen transport companies in Owerri, Imo State. Other empirical findings include that; overall fares elasticities are low, so that increases in fare levels will almost always lead to increases in revenue. An empirical model to assess the viability of intercity passenger transport operation in Nigeria was formulated. This study will help the operators in business to do a sensitivity analysis based of changes in the intercity passenger travel markets in Nigeria.

Źródło:

Journal of Sustainable Development of Transport and Logistics; 2018, 3, 3; 88-98
2520-2979

Pojawia się w:

Journal of Sustainable Development of Transport and Logistics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Psychosocial work dimensions, personality, and body mass index: Sex differences

Autorzy:

Blanch, Angel
Aluja, Anton

Powiązania:

https://bibliotekanauki.pl/articles/2179131.pdf

Data publikacji:

2013-08-01

Wydawca:

Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi

Tematy:

BMI
work demand and control
personality

Opis:

Objectives: The association between psychosocial work dimensions (i.e. demand and control) and obesity has been found to be inconclusive, indicating that individual differences factors might also contribute to explain the variability in BMI. Materials and Methods: The interaction between work dimensions and personality variables in a group of male and female workers (N = 506), and its associations with BMI were analyzed with a cross-sectional study with self-report data. Hierarhical regression analyses were used to predict the BMI levels from work and individual differences variables and their interactions for males and females. Results: The main effects of personality variables were not significant, physical workload interacted with neuroticism for males, whereas control interacted with activity for females. Conclusions: Psychosocial work dimensions and personality traits were related to BMI for men and women. These outcomes reinforce the notion that different models might account for the explanatory mechanisms of BMI in regard to sex.

Źródło:

International Journal of Occupational Medicine and Environmental Health; 2013, 26, 4; 572-580
1232-1087
1896-494X

Pojawia się w:

International Journal of Occupational Medicine and Environmental Health

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Annual Variation in the Performance of Settat Wastewater Stabilization Ponds Located in Settat City, Morocco

Autorzy:

Dyaa, Abou-Tammame
Jihane, Fathi
Abdelhamid, Bouzidi

Powiązania:

https://bibliotekanauki.pl/articles/1955490.pdf

Data publikacji:

2021

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

wastewater
natural lagoon
biochemical oxygen demand
chemical oxygen demand
suspended solids
sewage treatment
wastewater reuse
agriculture

Opis:

The wastewater treatment plant of Settat city uses the natural lagooning technology, which requires low maintenance cost and little technical expertise. The purpose of this study was to evaluate the stability of plant performance during two years of operation (2019 and 2020), as well as the safety of its treated wastewater for reuse in agricultural irrigation. The results of this study show that the biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and suspended solids (SS) did not exceed the Moroccan standards for discharge. They also show a good stable pollutant load reduction with a mean of 86.44%, 86.89% and 74.61%, for BOD5, COD and SS, respectively. On the other hand, microbiological characterization classifies the treated wastewater as "B" quality water, because the fecal coliform numbers exceed the requirement for "A" quality (1000 CFU/100 ml).

Źródło:

Journal of Ecological Engineering; 2021, 22, 8; 153-164
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Predictive Modelling for Characterisation of Organics in Pit Latrine Sludge from Unplanned Settlements in Cities of Malawi

Autorzy:

Kalulu, K.
Thole, B.
Mkandawire, T.
Kululanga, G.

Powiązania:

https://bibliotekanauki.pl/articles/124540.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

Akaike Information Criterion
biochemical oxygen demand
chemical oxygen demand
faecal sludge characteristics
multiple linear regression model

Opis:

The limited availability of data on faecal sludge characteristics remains one of the major challenges faced by developing countries in proper management of faecal sludge. In view of the limited financial resources and expertise in these developing countries, there is a need to come up with less-resource-intensive approaches for faecal sludge characterisation. Despite being used substantially in wastewater, there is limited evidence on the use of predictive modelling as a tool for cost-effective characterisation of faecal sludge. In this study, first order multiple linear regression modelling is investigated as a less-resource-intensive approach for accurate prediction of organics (biochemical oxygen demand and chemical oxygen demand) in pit latrine sludge. The predictor variables explored in the modelling include pH, electrical conductivity, total solids, total volatile solids, fixed solids and moisture content. The modelling uses data collected from 80 latrines in unplanned settlements of four cities in Malawi. The study shows that it is possible to reliably predict chemical oxygen demand and biochemical oxygen demand in pit latrine sludge using electrical conductivity and total solids, which require low levels of resources and expertise to determine.

Źródło:

Journal of Ecological Engineering; 2018, 19, 3; 141-145
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

The impact of stochastic lead times on the bullwhip effect – an empirical insight

Autorzy:

Nielsen, P.
Michna, Z.

Powiązania:

https://bibliotekanauki.pl/articles/407121.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

supply chain
bullwhip effect
inventory policy
lead time demand
order-up-to-level policy
stochastic lead time
demand forecasting
lead time forecasting
lead time demand forecasting

Opis:

In this article, we review the research state of the bullwhip effect in supply chains with stochastic lead times. We analyze problems arising in a supply chain when lead times are not deterministic. Using real data from a supply chain, we confirm that lead times are stochastic and can be modeled by a sequence of independent identically distributed random variables. This underlines the need to further study supply chains with stochastic lead times and model the behavior of such chains.

Źródło:

Management and Production Engineering Review; 2018, 9, 1; 65-70
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Impact of demand characteristics on the profitability of a purchasing strategy

Autorzy:

Milewski, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/2033613.pdf

Data publikacji:

2021

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

demand characteristics
distribution of demand
economic efficiency of logistic processes
purchasing strategies
selection of transport modes
simulation

Opis:

The problem presented in this article concerns the impact of demand characteristics for consumer goods on the profitability of purchasing strategy, including the choice of both the source of supply and transport technology (deliveries in containers by sea, rail, air, and road transport). To assess the profitability of applying a specific strategy, the author developed a model to conduct simulations using the Monte Carlo approach for two demand distributions (Gaussian and Gamma), various sales fluctuations, and changes in demand during the delivery time. Calculations were carried out considering the costs of transport, storage, capital costs related to maintaining stocks, and costs of lost sales. The simulation results show that the greater the fluctuations and the lower the predictability of the demand, the greater the profitability of deliveries using air transport and local deliveries. However, concrete decisions depend on knowledge of the consequences of making these decisions and whether appropriate cost accounting is used in enterprises. The results of the calculations also indicate that the strategy of outsourcing production in low-cost countries will, in many cases, become unprofitable if production costs in these countries increase even slightly.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2021, 67 (139); 70-79
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

The Analysis of the Amount of Pollutants in Wastewater after Mechanical Treatment in the Aspect of their Susceptibility to Biodegradation in the Treatment Plant in Nowy Targ

Autorzy:

Nowobilska-Majewska, Elwira
Bugajski, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/123918.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

wastewater
biodegradability
mechanical treatment
BOD5
COD
chemical oxygen demand
biochemical oxygen demand
total nitrogen
total phosphorus

Opis:

The aim of this study was to determine the biodegradability of organic and biogenic contaminants in wastewater flowing into biological reactors in the treatment plant in Nowy Targ. The research period covered the years 2016 and 2017, when 87 samples of raw wastewater and 87 samples of wastewater after mechanical treatment were collected and subjected to physico-chemical analysis. In both types of wastewater, the size of the following indicators was analyzed: BOD₅, COD, total kjeldahl nitrogen (TN) and total phosphorus (TP). The study verified the amount of pollutants in the raw wastewater in order to determine whether they are household wastewater. In the next stage of the analysis, the characteristic values of the analyzed indicators in wastewater after the mechanical treatment process were determined in order to indicate mutual dependences of organic and biogenic indicators. Based on the analysis, it was found that wastewater after mechanical treatment (in the case of its susceptibility to biological decomposition processes of organic pollutants) has an unfavorable COD/BOD₅ ratio. With regard to the susceptibility of wastewater to nitrification, denitrification and dephosphatation processes, in the majority of cases, wastewater is susceptible to these processes. It is recommended to apply an additional source of organic carbon to wastewater prior to biological treatment in order to improve the biodegradation of the analyzed pollutants.

Źródło:

Journal of Ecological Engineering; 2019, 20, 8; 135-143
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Consumer-oriented heat consumption prediction

Autorzy:

Grzenda, M.

Powiązania:

https://bibliotekanauki.pl/articles/206248.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

district heating systems
demand prediction
neural networks

Opis:

The advent of modern low-cost monitoring and wireless transmission systems results in unprecedented availability of measurement data potentially available in near real-time mode. In particular, some of the remote meter reading systems can be used to collect data on an hourly or even sub-hourly basis. This allows the utility companies to model and predict consumer behaviour more precisely than before. In this study, the way the monitoring data can be used to model heat consumption at individual premises supplied with heat by a district heating system, is proposed. The proposed algorithm is based on customer partitioning used to devise a number of group models serving the needs of consumers sharing similar consumption profiles. Self-organising maps are used to group averaged long-term time series, while the short-term time series provide a basis for group prediction models. Particular attention has been paid to a wider hydraulic modelling perspective, as the application of the proposed method to provide assumed demand for hydraulic model of a district heating system is envisaged. The approach has been validated using a real data set. Results show that in spite of a limited number of monitored consumers, group prediction models, constructed using the algorithm proposed in this study, can significantly reduce demand prediction error.

Źródło:

Control and Cybernetics; 2012, 41, 1; 213-240
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Analysis of the methods for gas demand forecasting

Autorzy:

Apostol, R.
Łaciak, M.
Oliinyk, A.
Szurlej, A.

Powiązania:

https://bibliotekanauki.pl/articles/298637.pdf

Data publikacji:

2017

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

natural gas
gas consumption
gas demand forecasting

Opis:

Natural gas is a very important and strategic resource. In the structure of the world’s primary energy, its share is currently approx. 25 and according to the forecasts it will continue to grow. In addition, the transition the large cities to gas as the main energy resource is an effective solution for reducing harmful emissions and improving air quality. The trend of increasing consumption of natural gas causes the complex technical issues, especially the need of accurate forecasting the gas demand, design the new distribution networks and modernization of the existing systems of gas supply. This article presents a review of existing methods for gas demand forecasting based on the gas engineering literature analysis and the approach for the forecasting of gas consumption based on the analysis of the gas consumption diagrams of gas station.

Źródło:

AGH Drilling, Oil, Gas; 2017, 34, 2; 429-438
2299-4157
2300-7052

Pojawia się w:

AGH Drilling, Oil, Gas

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Logistics management based on demand forecasting

Autorzy:

Hart, M.
Lukoszová, X.
Kubíková, J.

Powiązania:

https://bibliotekanauki.pl/articles/409312.pdf

Data publikacji:

2013

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

logistics management
demand forecasting
supply chain
industry

Opis:

The companies of any industry are strongly affected with current globalization trend, which makes supply chain flows more and more bulky and complex. To be competitive in cost and eco-friend way under contemporary business market conditions, the companies should apply system approach of logistics management to plan, manage and control of their logistics processes. Each company’s system can be analysed and divided into essential logistics sub-systems: purchasing, production, packaging, warehousing, distribution and reverse material flow management. Thus, the system and process approach are crucial for up-to-date logistics systems or subsystems management in context of long-term sustainable growth. Any effective logistics management system should be based on sub-system of demand forecasting. Demand forecasting is increasingly getting important to make right managerial decisions. Well developed demand forecasting sub-sytem in a company is a ground for effective planning, management and control of all company’s processes then also for effective logistics or supply chain management.

Źródło:

Research in Logistics & Production; 2013, 3, 1; 71-80
2083-4942
2083-4950

Pojawia się w:

Research in Logistics & Production

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Ewolucja turystyki na obszarach wiejskich
Evolution of Tourism in Rural Areas

Autorzy:

Matczak, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/2027641.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Definition
demand
rural environment
rural tourism
supply.

Opis:

In this work the identification of the process of changes in rural tourism has been presented. The evolution of rural tourism is defined by changes occurring in the countryside and in tourism itself. The presented analysis of the evolution of rural tourism is based on a change in the approach to the definition of rural tourism, to the supply and demand, and to the influence of rural tourism on rural environment. The analysis is restricted by the available literature of the subject and by statistical data for Poland. In the beginning the rural tourism was considered as the tourism occurring in the countryside. Afterwards, many aspects of rural tourism were recognized, which is reflected by its definitions. The evolution of tourism supply also took place and, as a result, the tourism supply became more diverse. Apart from traditional forms of vacational tourism, some new forms requiring a specifically designed landscape, equipment, cultural events, managment etc. appeared. New clients looking for specific experiences in rural tourism also appeared. For such clients the countryside became a tourism product. They are also able to provide a sufficient income for the sustainable development of the countryside. Providing tourism services by farms often leads to the collapse of their agricultural activity, and, in consequence, to the dominating role of tourists’ service, which leads to the multifunctionality of the countryside. Such a hypothesis requires further empirical investigations. The literature of the subject indicates that the model of tourist area lifecycle (TALC), as proposed by Butler in 1980, is useful for carrying out analyses of rural tourism evolution.

Źródło:

Studia komitetu przestrzennego zagospodarowania kraju PAN; 2015, 162; 63-82
0079-3507

Pojawia się w:

Studia komitetu przestrzennego zagospodarowania kraju PAN

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 51.

Tytuł:

An analysis of the power demand and electricity consumption of automatic pellet boiler

Autorzy:

Pełka, G.
Luboń, W.
Malik, D.

Powiązania:

https://bibliotekanauki.pl/articles/297828.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

automatic pellet boiler
electricity consumption
power demand

Opis:

Pellet boilers are increasingly popular on the market, largely due to the fact that their use does not demand constant control by the user, but is reduced only to replenishing fuel and cleaning the combustion chamber and heat exchanger every few days. However, this functionality creates additional costs in terms of power consumption due to the work of boiler components, such as the pellet igniter, screw conveyors motors, fan, pump and controller. The purpose of this research was the analysis of the power demand and energy consumption of the electricity devices installed on the automatic pellet boiler in two operating modes, determining the total energy consumption and costs of electricity due to heating seasons in each mode. In the first mode, the boiler worked with modulated power, and in the second the boiler was working with nominal power. To carry out the mentioned research, a pellet boiler installed in the AGH UST Laboratory of Renewable Energy Sources in Miękinia was used. All the data obtained was used to simulate the total electricity consumption during one standard heating season and the costs involved. In the first case the boiler consumed 623,195 kWh of electricity per heating season and in the second the boiler consumed 304,503 kWh electricity per heating season. Although electricity consumption in the modulated mode is higher, the total cost of heating is lower, due to lower fuel consumption.

Źródło:

Technical Sciences / University of Warmia and Mazury in Olsztyn; 2018, 21(2); 117-129
1505-4675
2083-4527

Pojawia się w:

Technical Sciences / University of Warmia and Mazury in Olsztyn

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 52.

Tytuł:

Estimation of energy demand in a territorial government unit - methodological problems
Szacowanie zapotrzebowania na energię jednostki terytorialnej - problemy metodyczne

Autorzy:

Kowalczyk-Juśko, A.
Kościk, B.

Powiązania:

https://bibliotekanauki.pl/articles/2051742.pdf

Data publikacji:

2017

Wydawca:

Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej

Tematy:

energy balance
energy demand
energy consumption
methodology

Opis:

Subject and purpose of work: The aim of the study is to identify methodological problems, which may be encountered during the preparation of the energy balance of a territorial unit, along with indications of ways to solve them. Materials and methods: Problems were identified during the preparation of the energy balance for two selected rural communes and then they were investigated with reference to the literature on this subject. Results: Estimating the energy demand of a local government unit requires proper identification of the groups of energy consumers, divided into facilities owned or co-owned by communes and ones independent from commune authorities. The latter group is divided further, into households, businesses, farms. For each of the users different methods of obtaining data may be needed: a survey and analysis of statistical data, analysis of financial documents, evaluation of the buildings’ age. Generally, however, preparing an energy balance statement requires many simultaneous approaches, and the combination of multi-criterion analysis provides the most reliable picture of the problem. Conclusions: The scope of the data needed to compile an energy balance statement for local government units, depends on the purpose of the developed analysis. Methodological handbooks and training materials on this subject are helpful, but the developed methodologies may need to be modified and adapted to specific conditions.
Przedmiot i cel pracy: Celem pracy jest wskazanie problemów metodycznych, na jakie napotkać można podczas sporządzania bilansu energetycznego jednostki terytorialnej, wraz ze wskazaniami sposobów ich rozwiązania. Materiały i metody: Problemy zidentyfikowano podczas sporządzania bilansu energetycznego dwu wybranych gmin wiejskich, a następnie skonfrontowano z literaturą przedmiotu. Wyniki: Oszacowanie zapotrzebowania na energię w jednostce samorządu terytorialnego wymaga właściwego określenia grup odbiorców energii w podziale na obiekty będące własnością lub współwłasnością gminy oraz niezależne od władz gminy. Druga grupa dzieli się dalej, na gospodarstwa domowe, przedsiębiorstwa, gospodarstwa rolne. Dla każdej z grup odbiorców mogą być potrzebne odmienne metody pozyskania danych: badanie ankietowe, analiza danych statystycznych, analiza dokumentów finansowych, ocena wieku budynków. Najczęściej jednak sporządzenie bilansu energetycznego wymaga stosowania wielu podejść równocześnie, a połączenie wyników analizy wielokryterialnej daje najbardziej rzetelny obraz badanego problemu. Wnioski: Zakres danych, potrzebnych do sporządzenia bilansu energetycznego jednostki samorządu terytorialnego, zależy od celu opracowania analizy. Poradniki metodyczne i materiały szkoleniowe na ten temat są pomocne, jednak opracowane metodyki mogą wymagać modyfikacji i dostosowania do konkretnych warunków.

Źródło:

Economic and Regional Studies; 2017, 10, 3; 5-16
2083-3725
2451-182X

Pojawia się w:

Economic and Regional Studies

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 53.

Tytuł:

Barter exchange as the way to deal with excess inventory: newsvendor problem with multiplicative demand

Autorzy:

Bieniek, Milena

Powiązania:

https://bibliotekanauki.pl/articles/2175847.pdf

Data publikacji:

2022

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

barter exchange
inventory
newsvendor
pricing
multiplicative demand

Opis:

Barter exchange has been growing in popularity during the coronavirus pandemic. This article considers bartering introduced to the newsvendor model with multiplicative demand. The objective of the model is to specify the order quantity and retail price to maximize the expected profit. We distinguish cases with the co-movement of prices of exchanged products and without it. In the first case, we calculate a precise optimal solution to the problem. In the latter case, we prove the existence of an optimal solution and give the conditions under which it is unique. We examine the sensitivity analysis of the results which is illustrated in numerical examples. The analysis revealed that the greater the commission, the lower the optimal profit. We make a conclusion that barter exchange can help the retailer to improve the profit.

Źródło:

Operations Research and Decisions; 2022, 32, 3; 49--64
2081-8858
2391-6060

Pojawia się w:

Operations Research and Decisions

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 54.

Tytuł:

Strategie obrony człowieka przed nieograniczonymi żądaniami
The Strategies of Defence from Unrestricted Demands

Autorzy:

Kwarciński, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/468922.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Filozofii i Socjologii PAN

Tematy:

utilitarianism
consequentialism
deontologism
evaluator relativity
unrestricted demand

Opis:

According to the utilitarian reasoning, people should always choose the least bad option of action. For example, they should sacrifice one person to save more people. The act of demanding from anybody such a decision is named „an unrestricted demand”. The justification of the belief that we should not address unrestricted demands to anybody usually takes form of deontological argumentation (deontological strategy), which points to deontological principles (e. g. „do not kill”) or rights (e. g. the right to live), leaving apart the consequences of the actions. In the following article we defend the thesis that the equally successful justification of the interdiction of addressing unrestricted demands can be formulated on the basis of the modified calculus of consequences (consequential strategy). Of course, modifying consequentialism by taking into account rights or egoistic motives is not sufficient. We can obtain the successful defence from unrestricted demands within the consequentialist frame by resigning from the impartiality condition on behalf of the evaluator relativity concept.

Źródło:

Prakseologia; 2007, 147; 65-76
0079-4872

Pojawia się w:

Prakseologia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 55.

Tytuł:

Demand and supply shock symmetry across Polish voivodeships

Autorzy:

Gajewski, Paweł

Powiązania:

https://bibliotekanauki.pl/articles/414012.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Warszawski. Instytut Ameryk i Europy. Centrum Europejskich Studiów Regionalnych i Lokalnych (EUROREG)

Tematy:

demand shocks
supply shocks
voivodeships
monetary policy

Opis:

The aim of this paper is to evaluate the symmetry of demand and supply shocks affecting Polish voivodeships and to assess the risk of asymmetric shocks in the future. The study employs the SVAR-based Blanchard and Quah (1989) decomposition as modified by Bayoumi and Eichengreen (1992), and uses a new method of estimating quarterly GDP by voivodeships. The results point to a relatively high symmetry of shocks and a rather low risk of their occurrence. Shock asymmetry does not appear to be strongly related to differences in production structures, which is claimed in most theoretical approaches, including the Optimum Currency Areas Theory.

Źródło:

Studia Regionalne i Lokalne; 2018, 3(73); 50-69
1509-4995

Pojawia się w:

Studia Regionalne i Lokalne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 56.

Tytuł:

Hybrid demand forecasting models: pre-pandemic and pandemic use studies

Autorzy:

Kolkova, Andrea
Rozehnal, Petr

Powiązania:

https://bibliotekanauki.pl/articles/22443157.pdf

Data publikacji:

2022

Wydawca:

Instytut Badań Gospodarczych

Tematy:

forecastHybrid
demand forecasting
statistic model
neural networks

Opis:

Research background: In business practice and academic sphere, the question of which of the prognostic models is the most accurate is constantly present. The accuracy of models based on artificial intelligence and statistical models has long been discussed. By combining the advantages of both groups, hybrid models have emerged. These models show high accuracy. Moreover, the question remains whether data in a dynamically changing economy (for example, in a pandemic period) have changed the possibilities of using these models. The changing economy will continue to be an important element in demand forecasting in the years to come. In business, where the concept of just in time already proves to be insufficient, it is necessary to open new research questions in the field of demand forecasting. Purpose of the article: The aim of the article is to apply hybrid models to bicycle sales e-shop data with a comparison of accuracy models in the pre-pandemic period and in the pandemic period. The paper examines the hypothesis that the pandemic period has changed the accuracy of hybrid models in comparison with statistical models and models based on artificial neural networks. Models: In this study, hybrid models will be used, namely the Theta model and the new forecastHybrid, compared to the statistical models ETS, ARIMA, and models based on artificial neural networks. They will be applied to the data of the e-shop with the cycle assortment in the period from 1.1. 2019 to 5.10 2021. Whereas the period will be divided into two parts, pre-pandemic, i.e. until 1 March 2020 and pandemic after that date. The accuracy evaluation will be based on the RMSE, MAE, and ACF1 indicators. Findings & value added: In this study, we have concluded that the prediction of the Hybrid model was the most accurate in both periods. The study can thus provide a scientific basis for any other dynamic changes that may occur in demand forecasting in the future. In other periods when there will be volatile demand, it is essential to choose models in which accuracy will decrease the least. Therefore, this study provides guidance for the use of methods in future periods as well. The stated results are likely to be valid even in an international comparison.

Źródło:

Equilibrium. Quarterly Journal of Economics and Economic Policy; 2022, 17, 3; 699-725
1689-765X
2353-3293

Pojawia się w:

Equilibrium. Quarterly Journal of Economics and Economic Policy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 57.

Tytuł:

A study of macroeconomic variables that effected employment in the United States from 1948 to 2021

Autorzy:

Reid, Littlejohn

Powiązania:

https://bibliotekanauki.pl/articles/30118851.pdf

Data publikacji:

2023

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

expected demand
employment
consumption
money supply
trade

Opis:

The paper provides an analysis of important U.S. macroeconomic variables that effect aggregate employment. The paper seeks to answer the question “What are the deter¬minants of changes in aggregate employment in the United States of America (U.S.)?” This is an important research topic because significant increases in unemployment can have a profound effect on an entire society, not just on its unemployed workers. When employment declines, public health declines, crime increases, suicides increase, and public revenues decrease. This paper uses quarterly data from 1948-2021 to estimate the effect of important macroeconomic variables on aggregate employment. The macroeconomic variables include personal consumption expenditures, U.S. federal government expenditures, nominal GNP, international trade (imports plus exports), M3 money stock, the mini-mum wage level, non-residential fixed investment, non-manufacturing employment, and U.S. federal tax receipts.

Źródło:

Central European Review of Economics & Finance; 2023, 44, 3; 125-152
2082-8500
2083-4314

Pojawia się w:

Central European Review of Economics & Finance

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 58.

Tytuł:

Pricing-inventory model with discrete demand and delivery orders

Autorzy:

Sadeghi, Heibatolah
Golpîra, Hêriş
Hnaien, Faicel
Magazzino, Cosimo

Powiązania:

https://bibliotekanauki.pl/articles/27315329.pdf

Data publikacji:

2023

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

discrete demand
pricing
multiple discrete deliveries
optimization

Opis:

This paper aims to develop an inventory model considering discrete demand, coordinated pricing, and multiple delivery policies in a single-buyer single-supplier production-inventory system. The shortage is not allowed and the planning horizon is considered to be infinite. The main objective of the framework is to equip the decision-maker with optimal order, pricing, and shipment quantities to maximize the total profit of the system. The results obtained from the numerical example reveal that the proposed approach with an average selling price equal to about 94% of the classical model, has resulted in an average profit increase of about 16% and an average order increase of about 34% compared to the classical approach.

Źródło:

Operations Research and Decisions; 2023, 33, 3; 129--139
2081-8858
2391-6060

Pojawia się w:

Operations Research and Decisions

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Modelowanie popytu na usługi telekomunikacyjne
Modelling of demand for telecommunications services

Autorzy:

Laskowski, S.

Powiązania:

https://bibliotekanauki.pl/articles/317434.pdf

Data publikacji:

2003

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

popyt
usługi telekomunikacyjne
modelowanie popytu
rozpływ ruchu telekomunikacyjnego
demand
telecommunications services
modelling demand
distribution of telecommunications traffic

Opis:

Przeanalizowano zagadnienie modelowania popytu na usługi telekomunikacyjne. Rozpatrzono liczne czynniki determinujące zmienność popytu, w tym: cenę usługi, ceny usług komplementarnych i substytucyjnych, dochód abonentów, ich profil, czas (porę dnia) świadczenia usługi, dzień tygodnia i liczbę abonentów, Zaproponowano analityczną postać modelu, opisującego wpływ tych czynników na wielkość generowanego ruchu, rozpływ ruchu w sieci i liczbę abonentów.
The paper analyses issues of modelling demand for telecommunications services. Many factors determining demand fluctuations have been reviewed, including the price of the service, the price of complementary and substitute services, subscriber income, their profile, the time (time of day) for providing the services, the day of the week and the number of subscribers. An analytical form of the model has been proposed, which describes the influence of these factors on the level of traffic generated, the distribution of the traffic in the network and the number of subscribers.

Źródło:

Telekomunikacja i Techniki Informacyjne; 2003, 1-2; 38-48
1640-1549
1899-8933

Pojawia się w:

Telekomunikacja i Techniki Informacyjne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 60.

Tytuł:

The constraints of the market access in case of the Hungarian organic animal products
Ograniczenia w dostępie do rynku na przykładzie węgierskich ekologicznych produktów zwierzęcych

Autorzy:

Szabo, V.
Percsi, K.N.

Powiązania:

https://bibliotekanauki.pl/articles/870902.pdf

Data publikacji:

2013

Wydawca:

The Polish Association of Agricultural and Agribusiness Economists

Tematy:

constraint
market access
Hungary
organic product
animal product
demand
solvent demand
cooperation
local market
sustainability
land protection

Opis:

The aim of the article is to give an insight to the problems of the Hungarian organic farming and to highlight the areas which should be developing in order to improve the domestic market and access more export market. This article presents the results of two surveys. Questionnaires were sent to the Hungarian organic farmers. The questions in the questionnaires differed from each other since the aims of the surveys varied. The answers received and the information gathered served as a good basis for the analyses of the state of the sector and the factors which impede competitiveness. No obvious relation can be found between the increase of stakeholders integrated in the supply chain and the extent of the farmers’ share from the profit on products. In organic animal keeping, long-term relations are characteristic, which rarely work without problems. According to the farmers’ opinion, the most important hindering factors of production are the lack of solvent demand and adequate promotion activities, also underpinned by the two empirical surveys.
Celem badań było przedstawienie problemów ekologicznej produkcji zwierzęcej na rynku węgierskim, ze wskazaniem obszarów, które powinny być rozwijane w celu poprawy dostępu do rynku krajowego i na eksport. Przedstawiono wyniki dwóch badań. Kwestionariusze skierowano do hodowców zwierząt ekologicznych i do rolników uprawiających rośliny ekologiczne. Otrzymane informacje posłużyły do analizy stanu sektora oraz określenia czynników hamujących konkurencyjność. W związku z naciskiem na ochronę środowiska, bezpieczeństwo żywnościowe i znakowanie produktów, rolnictwo ekologiczne jest alternatywą dla niektórych ogniw łańcucha dostaw (interesariuszy). Krajowa produkcja artykułów ekologicznych straciła jednak na znaczeniu po przystąpieniu Węgier do UE. 80-90% węgierskich produktów ekologicznych eksportuje się do państw ościennych. 60% gruntów (13 069,73 ha) kontrolowanych przez Biokontroll Hungária z o.o. stanowią łąki, pastwiska i ugory. Inwentarz żywy, taki jak: bydło, owce i gęsi nie przekracza 1 SD na 1 ha, mimo że oczekiwana wartość powinna osiągać 2,75% całego inwentarza. Według opinii badanych rolników, głównymi barierami ekologicznej produkcji są brak popytu na taki towar i brak odpowiednich działań promocyjnych.

Źródło:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2013, 15, 6
1508-3535
2450-7296

Pojawia się w:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 61.

Tytuł:

An inventory model with price and credit installments-dependent demand

Autorzy:

Hasan, Md. Rakibul
Siddiqa, Mst. Ayesha
Roy, Tutul Chandra
Al-Amin, Md.
Daryanto, Yosef

Powiązania:

https://bibliotekanauki.pl/articles/27315579.pdf

Data publikacji:

2023

Wydawca:

STE GROUP

Tematy:

inventory
pricing
installment-dependent demand
trade credit

Opis:

Financial capability is one of the primary drivers for buyers to make purchases. Therefore, sellers must set an optimum selling price and consider trade credit facilities to attract more demand. This paper proposes an inventory decision model in which customer demand depends on the price and number of credit installments to serve low-abled buyers. This study has developed a demand function with a positive impact on installment policies and the effect of the selling price. Two models have been formulated to optimize the selling price and positive stock time, m total profit, with and without installment policies. Then, numerical examples and sensitivity analysis illustrate the proposed model for different cases. The study has found that the selling price and positive stock time can be optimized. Profits can be higher in the case of an installment facility than in the case without an installment facility. It shows positive responses from the buyer to the installment policy.

Źródło:

Management Systems in Production Engineering; 2023, 2 (31); 111--127
2299-0461

Pojawia się w:

Management Systems in Production Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 62.

Tytuł:

Influence of computer equipment for power demand and consumption of electricity in companies

Autorzy:

Dobrzycki, A.

Powiązania:

https://bibliotekanauki.pl/articles/97632.pdf

Data publikacji:

2014

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

electricity consumption
power demand
computers
energy balance

Opis:

This paper concerns the analysis of power and energy consumption of computer workstations in companies. The following cases were analyzed: the position with the desktop computer the position with mobile workstation and the position with the laptop. We compared demanded power and electricity consumption of such posts pointed out advantages and disadvantages of the use of the above types of computer workstations in the context technical (electricity use) and economically.

Źródło:

Computer Applications in Electrical Engineering; 2014, 12; 246-253
1508-4248

Pojawia się w:

Computer Applications in Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 63.

Tytuł:

Information needs of entrepreneurs operating their businesses
Potrzeby informacyjne przedsiębiorców prowadzących działalność gospodarczą

Autorzy:

Kaluza, H.
Ginter, A.

Powiązania:

https://bibliotekanauki.pl/articles/862874.pdf

Data publikacji:

2013

Wydawca:

The Polish Association of Agricultural and Agribusiness Economists

Tematy:

information demand
entrepreneur
business
rural area
enterprise

Opis:

The aim of this study was to identify the most important information needs of entrepreneurs from Mazovia, with special focus on rural areas. Enterprises located in Mazovia, including rural areas, have reported various information needs, which unfortunately are not met. A total of 145 firms situated in the Mazovia region were surveyed, including 37 in rural areas. The information needs that were the most important for all respondents were connected with current legal regulations and changes to law. Contacts with clients and the media were their basic source of information. Trade magazines, scientific conferences and symposiums were the least preferred options of access to information. Entrepreneurs highly value integrated information offers defined as providing information in a complex manner. Such an offer should ensure effective data collection, organisation of transfer and good access, which may often determine the success of business operations.
Celem badań było zidentyfikowanie najbardziej istotnych potrzeb informacyjnych dla przedsiębiorców z obszaru Mazowsza, w tym ze szczególnym uwzględnieniem z obszarów wiejskich. Przedsiębiorstwa lokalizowane na Mazowszu, w tym na obszarach wiejskich, mają różnorodne potrzeby informacyjne, ale niestety nie są one zaspokajane. Liczba badanych przedsiębiorstw na Mazowszu wynosiła 145, przy czym na obszarach wiejskich było ich 37. Najbardziej istotne potrzeby informacyjne, zarówno dla całej grupy respondentów, jak i dla firm z obszarów wiejskich, dotyczyły obowiązujących regulacji prawnych i zmian w prawie. Najważniejszym źródłem informacji dla badanych przedsiębiorstw z obszarów wiejskich były kontakty z klientami oraz media. Pisma branżowe oraz konferencje oraz sympozja naukowe stanowiły najmniej preferowane przez respondentów źródła informacji. Dla przedsiębiorców istotna jest zintegrowana oferta informacyjna, rozumiana jako podaż informacji o kompleksowym charakterze. Oferta taka powinna zapewniać przedsiębiorstwom efektywne gromadzenie danych, organizację ich przepływu i sprawny dostęp do danych, co niejednokrotnie może mieć wpływ na osiągnięcie sukcesu w biznesie.

Źródło:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2013, 15, 5
1508-3535
2450-7296

Pojawia się w:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 64.

Tytuł:

Popyt na miasto jako inspiracja rozwoju regionu
Demand for the City as Regional Development Inspiration

Autorzy:

Czornik, Małgorzata

Powiązania:

https://bibliotekanauki.pl/articles/2028792.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

City
demand for the city
regional development

Opis:

The paper presents some considerations about the market incentives for regional development. Its main objective is to identify the determinants of undertaking the implementation of good changes in larger areas, which are inspired by the demand for specifi c small place offers. This refers to regional conditions and needs, which are satisfi ed by urban areas. In central part of paper the list of factors was created, infl uenced on demand for the city products and over-local relations. The main thesis postulates the regional co-operation to summing the demands for products of different urban places, which can effect minimizing confl icts among cities in the region and generate more attractive regional offers. The case of that analytic approach is the comparison of Silesian cities inhabitants opinions with declarations about regional development strategic orientations in “Silesian Region Development Strategy ŚLĄSKIE 2020+”.

Źródło:

Studia komitetu przestrzennego zagospodarowania kraju PAN; 2015, 164; 318-329
0079-3507

Pojawia się w:

Studia komitetu przestrzennego zagospodarowania kraju PAN

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 65.

Tytuł:

Protonic Ceramic Fuel Cells as novel electrochemical devices

Autorzy:

Winiarz, Piotr
Mielewczyk-Gryń, Aleksandra
Wachowski, Sebastian
Gazda, Maria

Powiązania:

https://bibliotekanauki.pl/articles/1179561.pdf

Data publikacji:

2017

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Electrical energy demand
fuel cell
protonic conductors

Opis:

Proton ceramic conductors are novel materials which are interesting from the application point of view. For example, Protonic Ceramic Fuel Cells (PCFCs) is a type of a solid oxide fuel cell, which uses proton ceramic conductors as an electrolyte. Scientists are looking for the most efficient materials for these devices. In recent years main focus has been put on the search for new proton and mixed proton-electron conductors which could be applied as electrolytes or electrodes.

Źródło:

World Scientific News; 2017, 75; 56-63
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 66.

Tytuł:

Ocena metod bilansowania popytu z produkcją surowców skalnych
Estimating methods of balancing demand with rock materials production

Autorzy:

Łochańska, D.

Powiązania:

https://bibliotekanauki.pl/articles/349856.pdf

Data publikacji:

2010

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

region
popyt
surowce skalne
demand
rock materials

Opis:

Surowce skalne dla budownictwa i drogownictwa pozyskiwane są zwykle w dużych ilościach, z reguły zaspokajają popyt lokalny, a koszt transportu jest często głównym nośnikiem kosztów ponoszonych przez odbiorców. W przypadku istnienia kilku ośrodków (regionów) wydobycia surowców skalnych niezbędne jest określenie wielkości wydobycia każdego z nich w stosunku do stref popytu. Nie spełnienie tego warunku prowadzi do istnienia przewozów krzyżujących się jednorodnej produkcji, których skutki mogą być mierzone w skali kraju. Niniejszy artykuł określa stan badań nad zagadnieniem bilansowania produkcji z popytem na surowce skalne oraz kierunki dalszych prac.
Rock materials used for building and road construction are usually produced in large amounts; as a rule they meet the local demand and the costs of transportation tend to be the main means of expenses borne by consumers. In case of existence of several centres (regions) of rock minerals mining it is essential to define the amount of open-pit for each of them, in relation to their zones of demand. Not complying with this condition leads to the existence of intersecting transport lines of homogeneous production. Its results can be measured in the scale of the country. The present article defines the state of research over the issue concerning balancing production with the demand for rock materials as well as directions for further works.

Źródło:

Górnictwo i Geoinżynieria; 2010, 34, 4; 399-407
1732-6702

Pojawia się w:

Górnictwo i Geoinżynieria

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 67.

Tytuł:

Cargo ships’ heat demand - operational experiment

Autorzy:

Bocheński, Damian
Kreft, Dominik

Powiązania:

https://bibliotekanauki.pl/articles/1573801.pdf

Data publikacji:

2020

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

heating system
heat demand
steam
thermal oil

Opis:

The paper presents the results of an experiment conducted on two cargo ships – a 5300 TEU container with a steam heating system and a 7500 dwt general cargo ship with a thermal oil system. On both ships research has been carried out using specially designed measuring equipment. After gathering data about flow velocity and temperatures (steam/ cooling water/ thermal oil/ seawater/ outside air), calculations have been done, resulting in histograms. For both types of histograms (heat demand and service time), the probability density function was fitted, using the K-S statistical test. The last step was comparison of the probability distribution mean to seawater and the outside air temperatures by linear regression and the coefficient of determination. The dependencies between the mentioned temperatures and heat demand were noted.

Źródło:

Polish Maritime Research; 2020, 4; 60-66
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

Artykuł

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Skocz do pozycji: 68.

Tytuł:

Szacunek wielkości popytu na usługi publicznego transportu zbiorowego w Szczecinie na lata 2015–2017
The estimation of demand for public transport in Szczecin for the years 2015–2017

Autorzy:

Bąkowski, Z.

Powiązania:

https://bibliotekanauki.pl/articles/319611.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego

Tematy:

popyt
przychody
samozaspokojenie
substytut
demand
revenues
substitute

Opis:

Ustalanie wielkość popytu na usługi w transporcie zbiorowym wymaga dużej wiedzy, umiejętności i zastosowania różnych metod badawczych. W przypadku ustalania przyszłych kwot pieniężnych ze sprzedaży biletów dla potrzeb planowania budżetu samorządu miejskiego można zastosować metodę względnie prostą i niewymagającą znacznej pracochłonności. Celem artykułu jest przedstawienie prostej techniki obliczeń opartej na zasadzie przyrostów krańcowych z uwzględnieniem zmian w czynnikach wpływających na popyt. Głównymi czynnikami wpływającymi na popyt jest liczba i struktura wiekowa mieszkańców oraz liczba zarejestrowanych samochodów. Z zaprezentowanych zestawień i obliczeń wynika, że w latach 2015–2017 roku nastąpi spadek przychodów ze sprzedaży biletów spowodowany wzrostem liczby samochodów osobowych w Szczecinie i zmiany struktury wiekowej mieszkańców.
Determining the size of the demand for services in public transport requires a lot of knowledge, skills and apply different research methods. For the determination of future amounts of money from ticket sales for the local government budget planning method can be used relatively simple and does not require significant effort. This article aims to provide a simple calculation technique based on the principle of marginal increases including changes in factors affecting demand. The main factors affecting demand are: the number and age structure of inhabitants and the number of registered cars. The presented statements and calculations show that in the years 2015–2017 year will decline in revenue from ticket sales due to the increase in the number of passenger cars in Szczecin and changes in the age structure of population.

Źródło:

Zeszyty Naukowe. Problemy Transportu i Logistyki / Uniwersytet Szczeciński; 2015, 29; 233-244
1640-6818

Pojawia się w:

Zeszyty Naukowe. Problemy Transportu i Logistyki / Uniwersytet Szczeciński

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 69.

Tytuł:

Distance to Radiotherapy and Demand – Projection of the Effects of Establishing New Radiotherapy Facilities in Poland by 2025

Autorzy:

Czerwiński, Adam Michał

Powiązania:

https://bibliotekanauki.pl/articles/1357371.pdf

Data publikacji:

2019-04-01

Wydawca:

Uniwersytet Warszawski. Wydział Nauk Ekonomicznych

Tematy:

radiotherapy
demand for healthcare
spatial interaction models

Opis:

In 2015, the Ministry of Health of the Republic of Poland introduced the Polish strategic plan for radiotherapy development and investment. Given that radiotherapy utilisation depends on the distance a patient must travel to undergo the treatment, the main goal of the plan was to increase equitable access to radiotherapy in Poland by establishing new facilities in new locations by 2025. This study constitutes the first step towards an economic evaluation of this plan by adopting spatial interaction models to project the expected increase in the demand for radiotherapy (3%). Moreover, it adds to the current research on the relation between distance and demand for healthcare services in the following ways. First, it flags the importance of using spatial econometrics to healthcare utilisation studies in the presence of spatial autocorrelation. Furthermore, it proposes a quantitative method for assessing the expected impact of establishing new facilities on utilisation. Finally, it formally confirms the dependence between radiotherapy utilisation and distance in Poland, which has been previously shown to exist in other countries.

Źródło:

Central European Economic Journal; 2017, 4, 51; 40 - 52
2543-6821

Pojawia się w:

Central European Economic Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 70.

Tytuł:

FE2(SO4)3 and Bentonite Use to Reduce Cod Indicators in Wastewater Containing Detergents

Autorzy:

Issayeva, Akmaral
Abubakirova, Azhar
Syzdykova, Marzhan
Arystanova, Saltanat
Anlamasova, Gulnara
Zhumakhanova, Roza
Leska, Boguslawa

Powiązania:

https://bibliotekanauki.pl/articles/2068458.pdf

Data publikacji:

2022

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

wastewater
chemical oxygen demand
ferric iron
bentonite

Opis:

Wastewater pollution with detergents is one of the environmental problems associated with the rational use of water resources. The existing methods of physicochemical wastewater treatment, despite their efficiency, are open to secondary environmental pollution. Biological coagulation/flocculation methods are widely used with the plant waste. The aim of this research was the use of ferric iron obtained by means of the bacterial-chemical method and bentonite to reduce the chemical oxygen demand in the wastewater containing detergents. It was identified that the use of Fe2 (SO4)3 obtained using the bacterial-chemical method with thionic bacteria Acidithiobacillus ferrooxidans BIT 1 and bentonite as a clay material is promising. At the same time, it was found that the highest reduction degree in the chemical oxygen demand – 88.1 ± 7.9% in wastewater was noted in the variation where the bacterial-chemical ferric iron in the amount of 1.75 g/L was used in combination with bentonite in the amount of 600 mg/L.

Źródło:

Journal of Ecological Engineering; 2022, 23, 3; 68--73
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 71.

Tytuł:

Analysis of Heat Loss of a Biogas Anaerobic Digester in Weather Conditions in Poland

Autorzy:

Teleszewski, T. J.
Żukowski, M.

Powiązania:

https://bibliotekanauki.pl/articles/125369.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

biogas anaerobic digester
heat demand
heat losses

Opis:

Currently in Poland, the construction of biogas plants as alternative energy sources is increasing. Often, the technical solutions for design and building of biogas plants are transferred to Poland from the countries in which these technologies are developed without taking into account the specific climatic conditions prevailing in Poland. It does occur that newly built biogas plants have a problem maintaining a sufficiently high temperature in the winter, which is caused by the insufficient insulation of the biogas anaerobic digester envelope. This paper presents an analysis of heat loss, depending on the climatic conditions prevailing in Poland and the working conditions of a biogas plant, based on an existing facility located in Ryboly (Poland). The work is supplemented with the results of tests using a thermal imaging camera. It should be noted that currently there are no requirements in the literature regarding the design of a thermal insulating layer in biogas installations in Poland.

Źródło:

Journal of Ecological Engineering; 2018, 19, 4; 242-250
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 72.

Tytuł:

A statistical approach to modeling the underground economy in South Africa

Autorzy:

Koloane, Cathrine Thato
Bodhlyera, Oliver

Powiązania:

https://bibliotekanauki.pl/articles/2054529.pdf

Data publikacji:

2022

Wydawca:

Uniwersytet Ekonomiczny w Katowicach

Tematy:

Currency demand approach
South Africa
Underground economy

Opis:

Aim/purpose – The underground economy is a major challenge across the world affecting both developed and developing economies. South Africa is no exception to this phenomenon and has lost billions of rands due to the underground economy. The aim of this study is to estimate the size of the underground economy in South Africa. Design/methodology/approach – The study used quarterly time series data from 2000 to 2020 and employed the Currency Demand Approach (CDA) for modeling the underground economy. Findings – The model results revealed that the underground economy is positively influenced by unemployment rate, tax burden, and social benefits granted by the government, however it is negatively influenced by Nominal Gross Domestic Product (NGDP), deposit interest rate, and self-employment rate. Furthermore, the study showed that there was a distinct growth of the underground economy, from 23.9% of GDP in 2003 to 34.5% of GDP in 2019. On average, the underground economy represented 28.8% of GDP for the period 2003 to 2020. Research implications/limitations – This model can be used in conjunction with other models to observe the trend in the South African underground economic activities. The South African government should take note of the spiraling growth of this economy and come up with measures to curb this growth to protect the formal economy. Originality/value/contribution – This study makes a significant contribution to the body of knowledge in this research area and provides much needed insights into the magnitude of the underground economy and the extent of tax evasion in South Africa.

Źródło:

Journal of Economics and Management; 2022, 44; 64-95
1732-1948

Pojawia się w:

Journal of Economics and Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 73.

Tytuł:

Consumption-led expansions lead to lower future output growth

Autorzy:

Virén, Matti

Powiązania:

https://bibliotekanauki.pl/articles/2176613.pdf

Data publikacji:

2023-02-28

Wydawca:

Główny Urząd Statystyczny

Tematy:

economic growth
demand management
consumption-led growth

Opis:

When assessing future growth prospects, does the current structure of demand matter, i.e. does it affect the future growth? This question is analysed in our paper using global and EU panel data. The result is quite striking: consumption-led growth - either in terms of private or public or total consumption - is slower than investment-led or exports-led growth. The same qualitative result is obtained irrespectively of the length of the past growth period (lag window), yet the more often the past is characterised by consumption-led growth, the slower the growth rate is in the future. In this context, our research provides important insights for both structural and cyclical policies.

Źródło:

Przegląd Statystyczny; 2022, 69, 3; 44-59
0033-2372

Pojawia się w:

Przegląd Statystyczny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 74.

Tytuł:

Metodyka badań strategicznych wariantów rozwoju systemu transportu zbiorowego w obszarach zurbanizowanych
The methodology of the strategic survey for the transport system development in urban areas

Autorzy:

Szarata, A.

Powiązania:

https://bibliotekanauki.pl/articles/192622.pdf

Data publikacji:

2015

Wydawca:

Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej

Tematy:

inwestycje infrastrukturalne
analiza efektywności funkcjonalnej
modelowanie podróży
prognozowanie ruchu
infrastructural investment
analysis of functional efficiency
demand modelling
demand forecasting

Opis:

Artykuł przedstawia procedurę analizy projektów infrastrukturalnych, jaka powinna towarzyszyć rozbudowie systemu transportowego obszarów zurbanizowanych. W ramach artykułu zdefiniowano pojęcie projektów rozwojowych oraz wskazano na proces ich powstawania, począwszy od koncepcji programowej, a skończywszy na analizie wielowariantowej. Podkreślono rolę wariantu bazowego i konieczność jego precyzyjnego zdefiniowania, aby prowadzone analizy porównawcze miały właściwe odniesienie. Ważną rolę pełnią tutaj transportowe modele symulacyjne, które pozwalają na testowanie i wybór pożądanego rozwiązania. W artykule przedstawiono strukturę najczęściej stosowanych modeli czterostadiowych, ze szczególnym uwzględnieniem roli Kompleksowych Badań Ruchu (KBR) w procesie ich powstawania. Niebagatelną rolę pełni również proces weryfikacji modelu i ocena jego jakości. Zwrócono również uwagę na możliwość zastosowania modułów kalibrujących, lecz podkreślono niebezpieczeństwa płynące z ich bezkrytycznej aplikacji. W podsumowaniu odniesiono się do procedury wyboru wariantu optymalnego i wskazano na zastosowanie procedury analiz wielokryterialnych, jako narzędzia wspomagającego proces decyzyjny.
The article presents procedure which should be applied during evaluation process of the transport system development within urban areas. The article defines the development projects and pointed out the process of their creation, from the conceptual solution to multivariate analysis. The role of the baseline scenario and the necessity of its precise definition to run comparative analyzes were described. Transport simulation models play an important role allowing to test variants and choose the desired solution. The article presents also the structure of the most commonly used four stage approach, with particular emphasis on the role of the Comprehensive Travel Studies in the process of its development. It is also emphasized that an important role is played by the model verification process and evaluation of its quality. Attention was also drawn to the possibility of calibration modules application, but at the same time dangers in their uncritical application was pointed. In the conclusion multi- -criteria analysis as a tool to support decision-making process has been demonstrated.

Źródło:

Transport Miejski i Regionalny; 2015, 7; 32-36
1732-5153

Pojawia się w:

Transport Miejski i Regionalny

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

A review on demand response based ancillary services offered by industries

Autorzy:

Ghasemi, Ahmad
Gerami, Nilufar

Powiązania:

https://bibliotekanauki.pl/articles/41193751.pdf

Data publikacji:

2024

Wydawca:

Politechnika Warszawska, Instytut Techniki Cieplnej

Tematy:

energy pricing
demand side management
demand response
smart grid
ceny energii
zarządzanie stroną popytową
reagowanie na popyt
inteligentna sieć

Opis:

Industrial power consumers have a considerable share of the global power demand; as a result, effective solutions have to be adopted to optimize the industrial power consumption. Demand response Programs (DRPs) provide such solutions. These programs are growingly studied as the industrial power consumption has increased and the implementation costs of the new technologies have decreased in recent years. DRP implementation reduces the dependency on the expensive energy storage technologies and flexible backup power sources. It seems that, DRP is not widely used in industry, yet its benefits are not practically exploited. The present work reviews the implementation of DRPs in industry and introduces the opportunities of industries for offering ancillary services to the market. Then, the industries which highly suit the specific kind of industrial DRPs are introduced and their processes are analyzed from the DRP point of view. Next, the DRP projects are continentally categorized and the advancements of different countries in specific kind of industrial DRPs are noted. Finally, the discussions and conclusion are presented.

Źródło:

Journal of Power Technologies; 2024, 104, 1; 32-55
1425-1353

Pojawia się w:

Journal of Power Technologies

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Stochastic demands, fixed costs and time-varying Solow residual

Autorzy:

Dudek, Maciej

Powiązania:

https://bibliotekanauki.pl/articles/500675.pdf

Data publikacji:

2015

Wydawca:

Szkoła Główna Handlowa w Warszawie

Tematy:

business cycles
demand uncertainty
Solow residual
fixed costs

Opis:

In a general equilibrium model that contains the standard RBC model as a special case we provide a novel and yet very intuitive interpretation of the Solow residual. We argue in a simple framework with a micro-level uncertainty and fixed costs that movements in the measured value of the Solow residual can reflect endogenous evolution in the stock of knowledge on the status of individual market demands. We establish that transitory shocks can have persistent effects as they exacerbate informational imperfections. In addition, the Solow residual is shown to fluctuate even though the technological frontier is time invariant and factors are fully employed. Finally, we argue that movements in the measured value of the TFP can be caused by monetary disturbances.

Źródło:

Prace i Materiały Instytutu Rozwoju Gospodarczego SGH; 2015, 96: Analyzing and forecasting economic fluctuations; 95-125
0866-9503

Pojawia się w:

Prace i Materiały Instytutu Rozwoju Gospodarczego SGH

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

Prognozowanie popytu na nowo wprowadzany produkt
Forecasting demand for a newly introduced product

Autorzy:

Idczak, Maja
Staniec, Iwona

Powiązania:

https://bibliotekanauki.pl/articles/777408.pdf

Data publikacji:

2019

Wydawca:

Politechnika Łódzka. Wydawnictwo Politechniki Łódzkiej

Tematy:

prognozowanie
popyt
produkt
rynek
forecasting
demand
product
market

Opis:

W pracy przedstawiono możliwość wykorzystania metody analogii historycznych do przeprowadzenia prognozy popytu dla nowo wprowadzanego na rynek produktu. Metodę zastosowano w praktycznym przypadku analizowanego przedsiębiorstwa X. Opisano, jak sobie poradzono z wadami i zaletami tej metody.
The paper presents the possibility of using the historical analogy method to carry out a demand forecast for a newly introduced product. The method was applied in the practical case of the analyzed company X. It was described how to deal with the advantages and disadvantages of this method.

Źródło:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Łódzka; 2019, 73; 27-41
0137-2599

Pojawia się w:

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Łódzka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

Inventory models and trade credit: a review

Autorzy:

Soni, H.
Shah, N. H.
Jaggi, C. K.

Powiązania:

https://bibliotekanauki.pl/articles/969900.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Badań Systemowych PAN

Tematy:

lot-size model
trade credit
deterioration
probabilistic demand

Opis:

This article reviews the literature on quantitatively oriented approaches for determining the optimal lot-size when supplier offers credit period to the retailer to settle their account. An attempt is made to provide an up-to-date review of existing literature, concentrating on descriptions of the types of problems that have been solved and important structural results.

Źródło:

Control and Cybernetics; 2010, 39, 3; 867-882
0324-8569

Pojawia się w:

Control and Cybernetics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

Rynek powierzchni magazynowych w Polsce w latach 2013-2015
Warehouse market in Poland in the years 2013-2015

Autorzy:

Piszcz, Anna

Powiązania:

https://bibliotekanauki.pl/articles/1819533.pdf

Data publikacji:

2019-05-12

Wydawca:

Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach

Tematy:

warehouse
demand
supply
rent
magazyn
popyt
podaż
czynsz

Opis:

Celem opracowania jest przedstawienie struktury rynku powierzchni magazynowychw Polsce w ostatnich latach. Wyjaśniono istotę i pojęcie magazynu, jego funkcje oraz rodzaje budowlimagazynowych. W artykule zamieszczono także statystyki popytu i podaży powierzchni magazynowychoraz stawek czynszu w głównych regionach logistycznych w Polsce.
The aim of this paper is to present the structure of the warehouse market in Poland in recent years. Explained the essence and concept of the magazine, its functions and types of storage buildings. The article also posted statistics on demand and supply of warehouse space and rents in the major regions of logistics in Poland.

Źródło:

Zeszyty Naukowe Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach; 2017, 40, 113; 195-202
2082-5501

Pojawia się w:

Zeszyty Naukowe Uniwersytetu Przyrodniczo-Humanistycznego w Siedlcach

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 80.

Tytuł:

SWOT Analysis of Urban Development on Kolonnawa Urban Council, Sri Lanka

Autorzy:

Nishanthi, K.
Dissanayaka, D. M. N. P.

Powiązania:

https://bibliotekanauki.pl/articles/1840791.pdf

Data publikacji:

2021

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Urban development
SWOT analysis
GIS
Land demand
MSL

Opis:

Changes in land use and land cover are a result of urban growth. Human activity has a vital role in city development since it helps to increase people's living standards, property values, accessibility, and safety. This study looked into the importance of legal procedures in accordance with the country's long-term development goals. It was also used to reveal the area's strengths, weaknesses, opportunities, and risks to the environment and people due to urban development. The study gathered data from both primary and secondary sources. The SWOT analysis was used to highlight the implications of urban growth in the research area. Maps analysis has been done using Geographic Information Systems (GIS). The statistical data on unauthorized filling was analyzed using Microsoft Excel. The findings show that, rather than being a source of strength and opportunity, urban expansion is also a source of weakness and risks. Threats to natural resources and humans, in particular, are disproportionately significant. Due to land demand, 62% of the land has been developed, jeopardizing the available marsh and paddy area. The growth of Kolonnawa urban council, which is located below mean sea level (MSL), causes flooding in the area every year. Based on a 50 year flood inundation, the grama niladari divisions of Wadulla, Orugodawatta, Meethotamulla, Gajabapura, Wijayapura, and Salamulla have been declared as high impacted locations.

Źródło:

World News of Natural Sciences; 2021, 39; 46-60
2543-5426

Pojawia się w:

World News of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 81.

Tytuł:

Tractor services challenges and current demand trends by smallholder farmers in Nigeria

Autorzy:

Onomu, Achoja Roland
Aliber, Michael
Agbugba, Ikechi Kelechi

Powiązania:

https://bibliotekanauki.pl/articles/1891785.pdf

Data publikacji:

2020-12-28

Wydawca:

Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane

Tematy:

Tractor services
smallholder farmers
demand trend. government
Nigeria

Opis:

Many smallholder farmers, particularly those in developing countries do not practice mechanisation such as the use of tractor due to some plethora of issues among which include: lack of demand, problematic supply model and failed mechanisation programmes. Based on the problems associated with smallholder mechanisation and the roles lack of demand played in past mechanisation programmes, this research investigated the characteristics and the challenges of tractor service providers, as well as the analyses of the current demand trends by the sampled smallholder farmers for tractor services, while forecasting the future demand in Delta and Benue States of Nigeria. The study employed a snowball sampling technique to collect field survey data from 20 private tractor service providers (SMEs) and 6 government tractor service providers in four local government areas of Delta and Benue States. Descriptive statistics, weighted mean score and trend analyses were used to interpret the result. The study finds that tractor services provide employment for rural dweller, particularly male; use less of household labour and the majority of those involved own only a tractor.  Among the different challenges such as the inability of smallholders to pay a high price, long distance to get mechanic, and the high cost of maintenance/high cost of the spare part; too few qualified tractor mechanics is ranked the most severe challenge. While both SMEs and government tractor service providers face some common challenges, poor maintenance and corruption predominates government tractor services. There has been a constant increase in the demand for tractor services by the smallholder farmers from 2013 to 2016 and the demand is forecast to continue. Based on the different challenges associated with the provision of tractor services to the smallholder, it was suggested that the government should support market driver tractor service provision

Źródło:

Journal of Agribusiness and Rural Development; 2020, 58, 4; 379-391
1899-5241

Pojawia się w:

Journal of Agribusiness and Rural Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 82.

Tytuł:

Assessment of the condition and possibilities of organic production in Poland

Autorzy:

Tobiasz-Salach, Renata
Stadnik, Barbara

Powiązania:

https://bibliotekanauki.pl/articles/2147738.pdf

Data publikacji:

2021-06

Wydawca:

Instytut Uprawy Nawożenia i Gleboznawstwa – Państwowy Instytut Badawczy

Tematy:

organic production
demand and supply for organic products

Opis:

The article analyses the condition of organic farming in Poland on the basis of the data published by the Agricultural and Food Quality Inspection, the Central Statistical Office and available literature sources. The aim of the study was to assess the condition and prospects for the development of organic produc-tion in Poland. The results of the analysis indicate that there is a growing demand for organic products among consumers, which may contribute to the development of organic farming and an in-crease in the processing of organic products. However, in recent years, a decline in the number of organic farms and the total area of organic farming has been observed. Fodder plants, cereals as well as meadows and pastures are predominant in the structure of crops. Orchards, berries and vegetable cultivation as well as industrial crops are of lesser importance. Poultry, sheep and dairy cattle are predominant in organic livestock farming, whereas goats and cattle intended for meat account for a lower percentage. Among the organic agricultural products milk and dairy products are produced in the greatest quantities.

Źródło:

Polish Journal of Agronomy; 2021, 45; 28-35
2081-2787

Pojawia się w:

Polish Journal of Agronomy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Socio-economic Aspects Of Researching The Labor Market Of Persons With Disabilities

Autorzy:

Pererva, Petro
Paimash, Hanna

Powiązania:

https://bibliotekanauki.pl/articles/2171205.pdf

Data publikacji:

2022-01

Wydawca:

Wyższa Szkoła Ekonomiczno-Humanistyczna w Bielsku-Białej

Tematy:

labor market
disabled people
employment
legislation
need
demand

Opis:

The article substantiates that the formation and development of the modern labor market are significant for the further development of Ukraine as a legal, democratic, and socially oriented state. Particular attention is paid to studying a specific segment of this market - the market of persons with limited labor opportunities. As practice shows, due to limited health opportunities, workers with limited labor opportunities do not have the chance to compete on an equal footing with other citizens in the labor market. As a result, their rights to work are violated, they are being forced out of the labor market, unemployment is growing and depth of poverty. The article proposes forms, mechanisms and systems of access to this market. The conducted research allowed to identify the main reasons for the low level of employment of representatives of this segment of the labor market.

Źródło:

MIND Journal; 2021, 12; 1-14
2451-4454

Pojawia się w:

MIND Journal

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 84.

Tytuł:

An empirical study of air transport demand forecast in Nigeria

Autorzy:

Nwaogbe, Obioma R.
Monday, Adebayo
Wokili-Yakubu, Huwa

Powiązania:

https://bibliotekanauki.pl/articles/2204248.pdf

Data publikacji:

2023

Wydawca:

Fundacja Centrum Badań Socjologicznych

Tematy:

air travel demand
air transport
airfare
passenger
sustainability

Opis:

The study aims to estimate the air travel demand forecast for domestic passengers' travels in Nigeria from 2002-2016. Data resourced from the Central Bank of Nigeria, the National Bureau of Statistics, and the Federal Airport Authority of Nigeria. The study utilized a multiple regression model using a Stata-Graphic software solver to analyze the data. From the analysis, the result shows that there is a significant relationship between the explanatory variable (passengers) and unexplanatory variables National Disposable Income, Population, Average Airfare, Gross Domestic Product, Exchange Rate, Total Expenditure, and Crude oil price, accounted for adjusted R of 93.624% relationship with demand for domestic air travel of passenger. The R-square statistic shows that the fitted model explains the variability in the number of passengers (NPAX), which is 96.8124%. The Hypothesis testing reveals that National Disposable Income and Airfare have a strong statistically significant relationship with the demand for domestic air travel with a P-value of 0.0013. Mores, a statistically significant relationship exists between National Disposable Income, Average airfare, and Crude oil price with P-values of 0.0017 and 0.0445, respectively. Furthermore, a forecast of the number of passengers and average airfare was carried out using ARIMA (1,0,0) model, which made available the future predicted values for the number of passenger movements and average airfare for the next 10-12 years to come. Thus, the study recommends that stakeholders in the air transport sector should work towards improving the capacity and infrastructure to accommodate the growth of air travel demand for domestic air travel in Nigeria. Policy implications were made on regulating the sector by having a good pricing policy to control the air fare for the industry.

Źródło:

Journal of Sustainable Development of Transport and Logistics; 2023, 8, 1; 6--23
2520-2979

Pojawia się w:

Journal of Sustainable Development of Transport and Logistics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

Effects of Terrorism and Political Instability on Tourist Behavior: 2016 conflicts in Turkey

Autorzy:

Koyuncu, Onur

Powiązania:

https://bibliotekanauki.pl/articles/14154444.pdf

Data publikacji:

2020-06-03

Wydawca:

Wyższa Szkoła Bankowa we Wrocławiu

Tematy:

Terrorism
Mediterranean tourism
Turkey
Economic impact
Forecast
Demand

Opis:

Aim: This article investigates the effects of two attacks and a failed coup attempt during 2016 on the tourist behavior. Foreign tourist data for the 2003-2019 period is analyzed to observe irregularities in Turkey’s national tourism income. Design / Research methods: Linear regression, multivariate regression and regression based static forecasting methods are applied for modeling the relationships. These models are supported with statistical tests. Conclusions / findings: Results on this study are in accordance with the current literature in the sense that conflicts in 2016 caused a shift in tourist behavior which in turn impaired the tourism industry in Turkey. Repercussions did not endure longer than expected and Turkish tourism recovered rapidly, only facing a serious loss due to the shift in tourism demand trend. Originality / value of the article: This study makes an addition to the terror and tourism literature, especially for the Mediterranean region and specifically for Turkey both of which are among the most popular tourist destinations worldwide. The aftermath of attacks and the coup attempt in Turkey during 2016 have not been researched before. The data and the outcomes presented sufficient evidence to infer on this issue.

Źródło:

Central European Review of Economics and Management; 2020, 4, 2; 21-40
2543-9472

Pojawia się w:

Central European Review of Economics and Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

A misinterpretation of Keyness concept of involuntary unemployment

Autorzy:

Grieve, Roy H.

Powiązania:

https://bibliotekanauki.pl/articles/22446546.pdf

Data publikacji:

2018

Wydawca:

Instytut Badań Gospodarczych

Tematy:

voluntary unemployment
derived demand for labour
involuntary unemployment

Opis:

Research background: One of the principal contributions of Maynard Keynes?s General Theory was identification of the phenomenon of involuntary unemployment, due (on account of adverse expectations and confidence on the part of potential buyers) to a want of demand for the quantity of output which a fully-employed labour force was capable of producing.  Such unemployment, he insisted ? contrary to conventional opinion ? was not due to workers pricing themselves out of work by demanding wages higher than employers could afford.  Far from unemployed workers being themselves responsible for their plight, they were, in reality, victims of circumstances beyond their control. Keynes?s understanding was, for many years, widely accepted by academics, policy-makers and the general public. In recent times, however, mainstream macroeconomic theory has shown a regrettable tendency to return to old modes of thinking. Blame for unemployment is again put on the workforce, whose alleged misunderstanding or slow response to change are said to imply seeking employment on unrealistic terms. A more extreme view is that worklessness may reflect a deliberate choice of leisure. To anyone sceptical of the validity of such analyses there is a clear need to recover the Keynesian understanding of the possibility not just of frictional or voluntary, but also of involuntary unemployment.  Purpose of the article:  Ezra Davar, recognising that it is important not to lose sight of the idea of involuntary unemployment, has recently attempted in this Journal to explain Keynes?s concept. Unfortunately, however, he fails to recognise that Keynes accounted for involuntary unemployment as resulting from deficiency of aggregate demand for output, not as  the consequence of any supply-side factor. In attributing involuntary unemployment to a peculiarity in the labour supply function Davar quite misses Keynes?s point, and in fact identifies as involuntary unemployment a situation of what Keynes would have described as ?voluntary? employment. The objective of the present note is to clear up this misunderstanding.

Źródło:

Equilibrium. Quarterly Journal of Economics and Economic Policy; 2018, 13, 2; 331-348
1689-765X
2353-3293

Pojawia się w:

Equilibrium. Quarterly Journal of Economics and Economic Policy

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

Tytuł:

Demand forecasting: an alternative approach based on technical indicator Pbands

Autorzy:

Kolková, Andrea
Ključnikov, Aleksandr

Powiązania:

https://bibliotekanauki.pl/articles/19233720.pdf

Data publikacji:

2021

Wydawca:

Instytut Badań Gospodarczych

Tematy:

demand forecasting
neural network
BATS
hybrid model
Pbands

Opis:

Research background: Demand forecasting helps companies to anticipate purchases and plan the delivery or production. In order to face this complex problem, many statistical methods, artificial intelligence-based methods, and hybrid methods are currently being developed. However, all these methods have similar problematic issues, including the complexity, long computing time, and the need for high computing performance of the IT infrastructure. Purpose of the article: This study aims to verify and evaluate the possibility of using Google Trends data for poetry book demand forecasting and compare the results of the application of the statistical methods, neural networks, and a hybrid model versus the alternative possibility of using technical analysis methods to achieve immediate and accessible forecasting. Specifically, it aims to verify the possibility of immediate demand forecasting based on an alternative approach using Pbands technical indicator for poetry books in the European Quartet countries. Methods: The study performs the demand forecasting based on the technical analysis of the Google Trends data search in case of the keyword poetry in the European Quartet countries by several statistical methods, including the commonly used ETS statistical methods, ARIMA method, ARFIMA method, BATS method based on the combination of the Cox-Box transformation model and ARMA, artificial neural networks, the Theta model, a hybrid model, and an alternative approach of forecasting using Pbands indicator.  The study uses MAPE and RMSE approaches to measure the accuracy. Findings & value added: Although most currently available demand prediction models are either slow or complex, the entrepreneurial practice requires fast, simple, and accurate ones. The study results show that the alternative Pbands approach is easily applicable and can predict short-term demand changes. Due to its simplicity, the Pbands method is suitable and convenient to monitor short-term data describing the demand. Demand prediction methods based on technical indicators represent a new approach for demand forecasting. The application of these technical indicators could be a further forecasting models research direction. The future of theoretical research in forecasting should be devoted mainly to simplifying and speeding up. Creating an automated model based on primary data parameters and easily interpretable results is a challenge for further research.

Źródło:

Oeconomia Copernicana; 2021, 12, 4; 1063-1094
2083-1277

Pojawia się w:

Oeconomia Copernicana

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 88.

Tytuł:

Consumer surplus and budget constrained preference maximization: A note

Autorzy:

Lahiri, Somdeb

Powiązania:

https://bibliotekanauki.pl/articles/108305.pdf

Data publikacji:

2020

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

demand function
consumer surplus
willingness to pay
area under demand curve
maximization of consumer surplus
budget constrained utility maximization

Opis:

The paper attempts to rectify what appear to be popular but elementary misconceptions about the concept of consumer surplus in the context of Marshallian demand curves. It is primarily addressed to teachers of microeconomics at the undergraduate level or in MBA programs of business schools. The main text informs the reader about the model/context and the results we are concerned with, all of the latter being a comprehensive teaching note, relegated to an appendix of the paper. Thus, the potential instructor may use the main text to motivate himself/ herself and at the same time inform his/her students as to the topic i.e. the rehabilitation of consumer surplus as an exact measure of welfare from the stand-point of cost benefit analysis. Thereafter the appendix can be referred to for a more formal presentation. The technical results contained in the appendix begin by showing that willingness to pay is the area under the demand curve if and only if consumers are surplus maximizers. The last result in the appendix is a theoretically ‘happy ending’ since it shows that for purposes of applied economics, budget constrained preference maximization implies surplus maximization and hence for such consumers, willingness to pay is indeed the area under the demand curve up to the quantity consumed.

Źródło:

Managerial Economics; 2020, 21, 1; 49-65
1898-1143

Pojawia się w:

Managerial Economics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 89.

Tytuł:

Przestrzenny rozkład zapotrzebowania na kruszywa w budownictwie jednorodzinnym
The spatial distribution of the demand for aggregates in the construction of single-family house

Autorzy:

Machniak, Ł.

Powiązania:

https://bibliotekanauki.pl/articles/394511.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN

Tematy:

górnictwo odkrywkowe
budownictwo jednorodzinne
kruszywa i beton zapotrzebowanie
opencast mining
single-family housing
demand for aggregates
demand for concrete

Opis:

Kruszywa naturalne znajdują szerokie zastosowanie w budownictwie liniowym i kubaturowym. W pracy przedstawiono badania zapotrzebowania na kruszywa w elementach betonowych i żelbetowych budynków jednorodzinnych wolnostojących oraz w zabudowie bliźniaczej. Kubatura budynków jednorodzinnych w 2013 roku stanowiła 70% kubatury budownictwa mieszkaniowego i blisko 33% kubatury wszystkich budynków oddanych do użytkowania. Analizę oparto na podstawie wskaźników jednostkowego zużycia kruszyw względem cech użytkowych i konstrukcyjnych budynków. W obliczeniach uwzględniono wskaźniki charakterystyczne dla różnych typów architektonicznych domów: parterowych podpiwniczonych i niepodpiwniczonych oraz parterowych z poddaszem użytkowym podpiwniczone i niepodpiwniczone. Uwzględniono również technologię wznoszenia budynków oraz konstrukcję stropów. Obliczone zużycie kruszyw w 2013 roku wyniosło około 13,5 ± 2 mln Mg. Wartość minimalna (11,5 mln Mg) i maksymalna (15,5 mln Mg) wynikają z obliczonych dla jednostkowych wskaźników zużycia kruszyw odchyleń standardowych (współczynników zmienności). Dla zidentyfikowanej struktury budownictwa jednorodzinnego, która w ostatnich kilku latach nie ulega zmianom; średnie zużycie kruszyw wynosi około 185 Mg/dom, a średni wskaźnik zużycia 1,22 Mg na 1 m2 powierzchni użytkowej. Udział budownictwa jednorodzinnego w rynku kruszyw żwirowo-piaskowych w 2013 roku, wyniósł około 8%, a w catym rynku kruszyw około 6%. W ujęciu regionalnym największe zapotrzebowanie na kruszywa odnotowano w województwie mazowieckim (ok. 1,9 mln Mg), następnie: małopolskim, śląskim i wielkopolskim (po ok. 1,5 mln Mg) a najmniejsze zapotrzebowanie wystąpiło w województwie opolskim (0,24 mln Mg). W poszczególnych województwach obserwuje się duże zróżnicowanie udziału budownictwa jednorodzinnego w rynku kruszyw żwirowo-piaskowych. Udział ten wynosił od około 2% w podlaskim do około 25% w śląskim i świętokrzyskim.
Natural aggregates are widely used both in ribbon and volumetric construction. The paper presents the study of the aggregate demand in single-family buildings. The volume of single-family houses in 2013 accounted for 70% of the volume of housing construction and nearly 33% of all the volume of the completed buildings. The analysis is based on the aggregates consumption ratio in respect to usable and construction features of the buildings. The calculations take indicators specific to different types of architectural houses into account, such as one-storey buildings with or without a basement, one-storey buildings with a utility attic with or without a basement. The analysis also includes technology for the construction of buildings, as well as the construction of ceilings. Calculated aggregate consumption in 2013 amounted to approx. 13.5 ± 2 million Mg. The minimum (11.5 million Mg) and maximum value (15.5 million Mg) has been calculated for the standard deviation (coefficient of variation) for the aggregates consumption ratio. Research on single-family housing structures has identified that the average consumption of aggregates is approx. 185 Mg / house, representing an average consumption of 1.22 Mg per 1 m2 of usable area and has not changed for the past several years. The share of single-family housing in market of gravel-sand aggregates in 2013, amounted to approx. 8%, and the overall market aggregates approx. 6%. In regional terms, the greatest use of aggregates was observed in the Mazowieckie province (approx. 1.9 million Mg), then: Małopolskie, Śląskie and Wielkopolskie provinces (approx. 1.5 million Mg). In contrast, the lowest amount of aggregates was observed in the Opolskie province (0.24 million Mg). In particular, provinces observed differences in the share of single-family housing in the gravel-sand aggregates market. This share ranged from approx. 2% in the Podlaskie to approx. 25% in the Śląskie and Świętokrzyskie provinces.

Źródło:

Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN; 2015, 91; 149-159
2080-0819

Pojawia się w:

Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Consumer demand for linen apparel fashion in Sri Lanka

Autorzy:

Karunaratne, Priyanka Virajini Medagedara
Withanage, Dulini

Powiązania:

https://bibliotekanauki.pl/articles/1031830.pdf

Data publikacji:

2020

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Climatic condition
Comfortability
Consumers
Demand
linen fashion apparels

Opis:

In the last few decades of the twenty-first century there was a great revival in consumer demand for linen, particularly in the form of apparel fashion products. This trend has continued into the first decade of the twenty-first century, and promotional activities to increase consumer awareness of the desirable characteristics of linen have intensified, especially in European countries. Linen is an expensive fabric when compared to the other fabric types like cotton, viscose, nylon, and polyester. Due to the complexity of the manufacturing process linen is considered a luxury fabric material. Linen is manufactured from the flax plant which is taking more time to source it as a raw material for fabric manufacturing. Therefore the cost of the linen fabric is higher and apparel prices are relatively higher in cost. Most of the consumers prefer the hand feel of the linen fabric and its comfortability factor. They also demand the elegant look of the linen fashion apparel too. Therefore even at a higher price, consumers in Sri Lanka are not reluctant to buy the linen fashion apparel. The climatic changes in Sri Lanka have also become a significant factor for choose linen fashion apparel. It brings a comfortability to the wearer in a hot climate. However, In Sri Lanka, linen is consumed by different groups of consumers who are highly demanding linen fashion apparel. But this demand is not normal. According to the demand and supply theories, when the price for a particular product rises, the demand for that particular product falls. However, when considering linen apparel, although the price is higher, demand does not fall. This study aims to find out factors that caused unusual demand for linen fashion apparel in Sri Lanka. Factors that influence consumer buying behavior will be discussed. Adopted quantitative and qualitative research methods used to gather, sort, and analyze data. The research is focused on female consumers and the age limit is denied in the research.

Źródło:

World Scientific News; 2020, 147; 104-123
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 91.

Tytuł:

The application of principal component analysis (pca) for the study of the spanish tourist demand

Autorzy:

González, María Jesús González
Pascual, María-Eva Vallejo

Powiązania:

https://bibliotekanauki.pl/articles/1051397.pdf

Data publikacji:

2018-12-30

Wydawca:

Uniwersytet im. Adama Mickiewicza w Poznaniu

Tematy:

Spain
autonomous communities
tourist demand
principal component analysis

Opis:

The objective of this study is the characterisation of the Spanish autonomous communities as tourist destinations for Spanish trips, based on the activities carried out, using the principal component method. The Spanish tourist is not only motivated by the sun and beach. This paper aims to clarify how Spanish people consider other tourist destinations. We contrast how frequently other types of tourism are valued when choosing their destination within the Spanish geography. Inland tourism, sports tourism, entertainment as well as gastronomy are becoming increasingly important.

Źródło:

Quaestiones Geographicae; 2018, 37, 4; 43-52
0137-477X
2081-6383

Pojawia się w:

Quaestiones Geographicae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

The Role of Demand-Responsive Transportation System in Road Traffic Accidents in part of Ibadan, Oyo State, Nigeria

Autorzy:

Amusa, I. A.
Ogunlade, S. O.
Akinpelu, A. A.
Nmeregini, C. S.

Powiązania:

https://bibliotekanauki.pl/articles/1163817.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

Database
Demand-Responsive
GIS
Road Traffic Accidents
Safety

Opis:

Road Traffic Accidents (RTAs) are common occurrences on Nigeria roads and Ibadan is not an exception. Non-availability of facilities to take the injured to the nearest hospitals necessitated this study. The study looked at the role played by Demand-Responsive Transportation System in Road Traffic Accidents in part of Ibadan with a view to reduce deaths caused by the inability of the available system on ground to rescue the injured from the scene of the accidents to the nearest hospitals for immediate first aid or outright treatment. The aim is to locate an accident scene, the nearest hospital and the shortest route to the hospital with facilities to treat the victims. The study adopted Remote Sensing and GIS methods to acquire both primary and secondary data and used ArcGIS 10.3 software for the processing of the data and performed geospatial analyses to produce information for a Decision Support System. Twenty three hospitals and eleven accident scenes were considered. The hospitals have the basic facilities to take care of victims of Road Traffic Accidents within the study area. The study revealed that 63.64% of the total Road Traffic Accidents’ scenes in the study area occur on the Dual carriage ways while the remaining 36.36% occurred on the single lane roads. The travel distances range from 1.4 Km to 3.3 Km between one of the accident scenes and twelve of the hospitals. The number of hospitals available to attend to the RTA victims within an accident scene are between 0 and 6 when a distance of 1Km is considered and can be more with increase in the travel distance but should rather be shorter because of danger in travelling farther with injured victims. There are also overlaps because of the distribution of the accident scenes and the hospitals in the study area.

Źródło:

World Scientific News; 2018, 108; 1-17
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Multi-period age-discriminated perishable inventory

Autorzy:

Alrawabdeh, Wasfi

Powiązania:

https://bibliotekanauki.pl/articles/1536976.pdf

Data publikacji:

2021

Wydawca:

STE GROUP

Tematy:

probabilistic inventory
demand
age discrimination
newsvendor
supply chain

Opis:

In this paper, an extremely short shelf-life inventory of age-discriminated stochastic demand is considered. Age discriminated demand can be found in products of high circulation and short shelf-lives such as dairy products, packaged food, pharmaceutical products and medical products of short shelf lives. Simulation based optimization is considered to find the optimal order quantity. The model employs Discrete Event Simulation along with a modified simulated annealing algorithm. To validate the model and the optimization algorithm, the classical newsvendor problem is tested first, later, different experiments are carried out for different product lifetimes. In contrast to the classical newsvendor, this problem tackles a multi-period inventory of different ages and different demand distributions. The objective is to determine the optimal order quantity to satisfy the stochastic demand of all ages such that shortages and expirations are minimized. The results showed remarkable performance and outstanding minimum levels of shortage and expiration.

Źródło:

Management Systems in Production Engineering; 2021, 2 (29); 97-105
2299-0461

Pojawia się w:

Management Systems in Production Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 94.

Tytuł:

Wpływ zmian zachodzących w Polsce na wielkość zgłaszanych potrzeb na ropę naftową
The influence of the changes in the environment on the level of crude oil demand in Poland

Autorzy:

Kaliski, M.
Jedynak, Z.

Powiązania:

https://bibliotekanauki.pl/articles/283543.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN

Tematy:

otoczenie
ropa naftowa
zapotrzebowanie
environment
crude oil
demand

Opis:

W Polsce wzrasta znaczenie ropy naftowej w bilansie wykorzystania energii pierwotnej. Należy podkreślić, że obecnie potrzeby paliwowe w ograniczonym stopniu podlegaj ą regulacji, gdyż wynikają bezpośrednio z długookresowych zmian zachodzących w otoczeniu. Ponadto barierą dla prawidłowego funkcjonowania tego sektora są coraz częściej uwidaczniające się ograniczenia polityczno-gospodarcze zarówno w kraju jak i zagranicą. W związku z tym ukształtowany niekorzystnie dla odbiorców rynek, skłania do postawienia pytania o znaczenie poszczególnych czynników w procesie kształtowania aktualnych i przysz łych potrzeb paliwowych. Celem artykułu jest próba przeprowadzenia analizy zmian zachodz ących w krajowym otoczeniu i ocena ich wpływu na poziom zapotrzebowania na ropę naftową w Polsce w latach 1995-2006 oraz określenie ich znaczenia do roku 2015. Jego realizacja odbywa się poprzez metodę badawczą, która obejmuje następujące etapy: analizę otoczenia, ocenę otoczenia oraz ocenę szans i zagrożeń.
In Poland the importance of petroleum in the balance of the exploitation of primary energy has been considerably increasing. It needs to be emphasized that the present petroleum demand can only be regulated in a limited degree as it results from the long-term changes in the environment. Moreover, political and economic limitations which are more frequently apparent in and outside Poland are also a barrier to the proper functioning of the petroleum sector. As a consequence, the development of the market disadvantageous for the consumers triggers the questions concerning the significance of the particular factors in shaping the demand on petroleum at present and in the future. Therefore, the aim of this article is to analyze the changes in the domestic environment and to evaluate their influence upon the level of demand on petroleum in Poland in the years 1995-2006, as well as to determine their significance up to the year 2015. The stages of the research are: the analysis of the environment, the evaluation of the environment, the prognosis of the opportunities and threats.

Źródło:

Polityka Energetyczna; 2009, 12, 1; 33-59
1429-6675

Pojawia się w:

Polityka Energetyczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 95.

Tytuł:

A COMPOSITE INDICATOR OF HOUSEHOLD DEMAND FOR DEBT (KONSTRUKCJA WSKAŹNIKA ZŁOŻONEGO POPYTU NA KREDYT GOSPODARSTW DOMOWYCH)
KONSTRUKCJA WSKAŹNIKA ZŁOŻONEGO POPYTU NA KREDYT GOSPODARSTW DOMOWYCH

Autorzy:

Białowolski, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/654520.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

consumer credit demand
consumer tendency surveys
composite indicators

Opis:

W tym artykule prezentujemy podejście do budowy wyprzedzającego wskaźnika popytu na kredyt gospodarstw domowych. W celu prawidłowego określenia wymiarowości wskaźnika podejmujemy analizę teoretyczną jego komponentów, a następnie dobieramy pytania z ankiety badania kondycji gospodarstw domowych i badania consumer finance celem oceny przebiegu zmian w wyselekcjonowanych obszarach. W kolejnym kroku dokonujemy agregacji wymiarów i dołączamy nowopowstały wskaźnik, jako zmienną objaśniającą do modelu ARIMA. Pokazujemy, że wskaźnik pozwala wyjaśnić istotną część wariancji zmian na rynku kredytu dla gospodarstw domowych. 
In this paper we present a novel approach for construction of a leading indicator for household demand for debt, i.e. consumer credit demand index. In order to derive the proper set of indicators we first present a theoretical background for the dimensions of the index. With all dimensions of the index at hand we search for indicators in the State of the Households Survey and consumer finance survey. We later aggregate the dimensions into a single index with generalized mean which does not allow for full compensability between dimensions. Finally, we check the leading properties of the index.       

Źródło:

Acta Universitatis Lodziensis. Folia Oeconomica; 2015, 3, 314
0208-6018
2353-7663

Pojawia się w:

Acta Universitatis Lodziensis. Folia Oeconomica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

Methodology of running cost analysis for high-efficiency gas micro-cogeneration application in objects with varying demand for heat and power
Metodyka analizy kosztów eksploatacyjnych wysokosprawnej kogeneracji gazowej w obiektach o różnym zapotrzebowaniu na energię elektryczną i ciepło

Autorzy:

Kaleta, P.
Wałek, T.

Powiązania:

https://bibliotekanauki.pl/articles/113746.pdf

Data publikacji:

2017

Wydawca:

STE GROUP

Tematy:

gas microcogeneration
power demand
heat demand
load duration curves
mikrokogeneracja gazowa
zapotrzebowanie na ciepło
zapotrzebowanie na energię elektryczną
wykresy uporządkowane

Opis:

Conditions related to high-efficiency gas micro-cogeneration application in buildings with varying demand for heat and power were presented, focusing on joint application of microcogeneration and other sources of heat and power in buildings. Such joint application of energy sources is characterized by specific critical parameters on which the most effective use of microcogeneration system in objects depends, as well as by the resulting maximal possible reduction of primary fuels and environmental pollutant emission. To ensure achievement of these, designing and application of a proper mathematical model, which has been described in the paper, is required. The model presented therein finds practical application in conducting a proper selection of micro-cogeneration units’ capacity for the needs of objects being analyzed, such as health resorts, swimming pools, hospitals, hotels, pensions or manufacturing plants.
W artykule przedstawione zostały uwarunkowania dotyczące zastosowania wysokosprawnej mikrokogeneracji gazowej w obiektach o zróżnicowanym zapotrzebowaniu na energię elektryczną i ciepło, w świetle współłączenia mikrokogeneracji z innymi źródłami zaopatrującymi obiekt w energię elektryczną i ciepło. Układ taki charakteryzuje się pewnymi krytycznymi parametrami, od których zależy jak najefektywniejsze wykorzystanie układu mikro-kogeneracji w obiekcie, i idąca za tym maksymalna możliwa redukcja zużycia paliw pierwotnych i emisji zanieczyszczeń do środowiska. Zapewnienie takich parametrów wymaga opracowania i zastosowania odpowiedniego modelu matematycznego, który został w artykule przedstawiony. Zaprezentowany model matematyczny znajduje praktyczne zastosowanie przy przeprowadzaniu prawidłowego doboru mocy jednostek mikrokogeneracyjnych na potrzeby analizowanych obiektów, takich jak np. uzdrowiska, baseny, szpitale, hotele, pensjonaty, zakłady produkcyjne.

Źródło:

Systemy Wspomagania w Inżynierii Produkcji; 2017, 6, 4; 140-146
2391-9361

Pojawia się w:

Systemy Wspomagania w Inżynierii Produkcji

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 97.

Tytuł:

Investment Demand on the Bullion Market
Popyt inwestycyjny na rynku złota i srebra

Autorzy:

Mamcarz, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/660072.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

rynek złota i srebra
cena złota i srebra
popyt na wyroby jubilerskie
popyt przemysłowy
popyt inwestycyjny
monety
sztabki
bullion market
bullion price
demand for jewellery products
industrial demand
investment demand
coins
bars

Opis:

Złoto i srebro to metale szlachetne związane od dawna z kulturą ludzkiej cywilizacji. Popyt na nie występuje na więcej niż jednym rynku, a szczególne miejsce zajmuje popyt inwestycyjny. Celem artykułu jest scharakteryzowanie popytu inwestycyjnego na rynku złota i srebra oraz identyfikacja i ocena przyczyn jego rozwoju i zmian struktury. Znajomość tej problematyki ma istotne znaczenie dla wyboru kierunku inwestycji strategicznych. Po ogólnej charakterystyce rynku złota i srebra przeprowadzono analizę struktury i determinant popytu światowego. Szczególnej analizie został poddany popyt na dwa podstawowe produkty popytu inwestycyjnego, tj. sztabki i monety. W analizie wykorzystano, w zależności od charakteru danego czynnika i dostępności danych empirycznych, podstawowe statystyki opisowe, wykresy graficzne oraz analizę opisową. Zaobserwowano istotne różnice między wielkością i strukturą popytu na złoto i srebro oraz, że charakter zależności między popytem i ceną obu metali szlachetnych nie zawsze odzwierciedlał znane z literatury prawidłowości.
Gold and silver are two precious metals which have been a part of human civilization for centuries. The demand for these metals has been present on more than one market, with the investment demand playing a special role. The goal of the article is to characterize the investment demand on the bullion market and to identify and evaluate the reasons for its development and dynamics of its structure. The understanding of these issues is fundamental to strategic investment decisions. The general characteristics of the bullion market is hereby followed by the analysis of the structure of its world demand and the related factors. The bullion demand for two basic products, i.e. bars and coins is subject to special analysis. Depending on the character of a given factor and availability of empirical data, the analysis relied on basic descriptive statistics, graphic charts and descriptive analysis. The completed analysis proves that there are material differences between the volume and structure of bullion demand and that the relations between the demand and price of both precious metals have not always reflected the tendencies defined in the literature.

Źródło:

Acta Universitatis Lodziensis. Folia Oeconomica; 2016, 4, 323
0208-6018
2353-7663

Pojawia się w:

Acta Universitatis Lodziensis. Folia Oeconomica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

The Demand and Income Effect of Internal Educational Migration in Academic Centres – the Case of Opole

Autorzy:

Rokita-Poskart, Diana

Powiązania:

https://bibliotekanauki.pl/articles/498577.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

educational migration
demand effect
income effect
the influx area

Opis:

In cities with large educational institutions, the inflow of educational migrants is important for consumption demand, and can trigger multiplier effects. The main aim of this article is to show the mechanism of the aggregate demand-income effect created by educational migration in the Polish city of Opole. An estimate of this effect is provided, based on questionnaire research among a sample of 1 075 students from all institutions of higher education located in the city. The estimated effects analysed concern the direct consumption impulse, as well as the indirect job creation and increase in income for providers of accommodation for students, in turn triggering increased consumption demand. While the results must be interpreted with care, an estimated 15 per cent of consumption demand created through expenditure of migrant students (about PLN 175 400 000) and 485 extra job show the significance of such expenditure for the local economy.

Źródło:

Central and Eastern European Migration Review; 2018, 7, 2; 197-208
2300-1682

Pojawia się w:

Central and Eastern European Migration Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 99.

Tytuł:

Case study about economic order quantities and comparison of results from conventional EOQ model and response surface-based approach

Autorzy:

Yıldız, R.
Yaman, R.

Powiązania:

https://bibliotekanauki.pl/articles/406756.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

economic order quantity
Pareto analysis
response surface
demand forecasting

Opis:

This study involves the implementation of an economic order quantity (EOQ) model which is an inventory control method in a ceramic factory. Two different methods were applied for the calculation of EOQs. The first method is to determine EOQ values using a response surface method-based approach (RSM). The second method uses conventional EOQ calculations. To produce a ceramic product, 281 different and additive materials may be used. First, Pareto (ABC) analysis was performed to determine which of the materials have higher priority. Because of this analysis, the value of 21 items among 281 different materials and additives were compared to the ratio of the total product. The ratio was found to be 70.4% so calculations were made for 21 items. Usage value for every single item for the years 2011, 2012, 2013 and 2014, respectively, were obtained from the company records. Eight different demand forecasting methods were applied to find the amount of the demand in EOQ. As a result of forecasting, the EOQ of the items were calculated by establishing a model. Also, EOQ and RSM calculations for the items were made and both calculation results were compared to each other. Considering the obtained results, it is understood that RSM can be used in EOQ calculations rather than the conventional EOQ model. Also, there are big differences between the EOQ values which were implemented by the company and the values calculated. Because of this work, the RSM-based EOQ approach can be used to decide on the EOQ calculations as a way of improving the system performance.

Źródło:

Management and Production Engineering Review; 2018, 9, 3; 23-32
2080-8208
2082-1344

Pojawia się w:

Management and Production Engineering Review

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 100.

Tytuł:

Innovation in the construction of educational systems balancing the supply-demand of PhD candidates. An initial research survey

Autorzy:

Erkengel, Hazel Ceren
Owoc, Mieczysław Lech

Powiązania:

https://bibliotekanauki.pl/articles/432157.pdf

Data publikacji:

2019

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

educational model
decision support system
supply-demand in PhD

Opis:

Nowadays, the requirements and expectations of universities are increasing along with globalization. The functions of Research and Development and the doctorate programmes which aim to support education and train the academic staff, came to the fore with globalization. The doctorate programmes in European countries cannot be updated fast enough and quotas for these programs are insufficient in some regions – faster balancing seems to be the must. The Decision Support System (DSS) can be a solution to the problem. In this study, the candidates’ demand of the universities, the public-private organizations and R&D centres are included to a model. As a result DSS will help us identify the need for candidates and develop PhD planning strategies by analysing the current situation of the university policies through the innovative model balancing the supply-demand for PhD candidates – including formulae of doctorate implementation (recently introduced in Poland).

Źródło:

Informatyka Ekonomiczna; 2019, 1 (51); 9-21
1507-3858

Pojawia się w:

Informatyka Ekonomiczna

Dostawca treści:

Biblioteka Nauki

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