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Tytuł:
Constructing improvement plan for inputs through dialogue with DM about DEA-Efficiency for DMUs
Autorzy:
Uemura, Y.
Powiązania:
https://bibliotekanauki.pl/articles/206812.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
evaluation efficiency
partial improvement plan
sensitivity analysis
Opis:
Evaluation of efficiency of the DMUs (Decision Making Units) in a company is a very important problem. Thus, the studies of evaluation of efficiency are being actively carried out on the basis of the production functions, for example Cobb-Douglas production function and fuzzy loglinear production function (fuzzy Cobb-Douglas model). Recently, DEA (Data Envelopment Analysis) was applied to evaluation of efficiency, in the sense of benchmarking evaluation. After having evaluated DMUs by DEA, we obtain the improvement plan for every input in the inefficient DMUs. Though we many not be able to decrease inputs at one time according to the DEA plan, it is natural to construct some phased improvement plans for decreasing the inputs. First, we propose to support the construction of some phased improvement plans by the sensitivity analysis for the evaluated efficiency by applicatiion of definite limits to the decrease of inputs. Second, we evaluate this method by applying it to the case of bank data.
Źródło:
Control and Cybernetics; 1999, 28, 1; 133-139
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluating the efficiency of continuous handling means
Autorzy:
Marczuk, A.
Misztal, W.
Powiązania:
https://bibliotekanauki.pl/articles/247198.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
efficiency evaluation
continuous transport
exploitation costs
Opis:
The handling operations are the inseparable element of production processes. The percentage of this type of work, in reference to other production activities, can reach even high levels bringing the increase of expended costs. The capital consumption of handling works affects the improvement of a proper selection of means to assure the production profitability. An important issue of selecting the handling means is based on their work efficiency evaluation. The paper contains the description of the software (developed at The University of Life Sciences in Lublin), that would be helpful in solving the real problems associated with the selection of the continuous handling means used for works planned to do during a production process. The described software is an application consisting of forms that reflect divisions of means for continuous handling and connected databases for storing auxiliary information and results of calculations performed. The principle of the software is based on making calculations of the work efficiency as well as exploitation costs for continuous handling means. Additional values are: ease of data input and search for means characterized by possibly the lowest exploitation costs. Correctness of the software functioning was verified on an example related to comparison of three conveyor types.
Źródło:
Journal of KONES; 2011, 18, 4; 265-271
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation efficiency of low-power fans used in the means of transport
Autorzy:
Nygard, Adam
Bartoszewicz, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/2097474.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
fans
low-power fan
evaluation efficiency
fan efficiency
transport
wentylatory
wentylator małej mocy
ocena wydajności
wydajność wentylatora
Opis:
The article presents test results on low-power fans used in the means of transport. Fans evaluation was in the context of energy efficiency. Interest in scientific topics related to low-power fans has its source in the reports of the Chief Inspector of Environmental Protection on the state of the natural environment in Poland and European Union reports assessing our natural environment. The goal of the article is to compare experimental results with Minister of Economy Regulation of March 11th, 2014, which introduces changes in accordance to European Parliament and Council Directive 2009/125/WE, with regard to ecodesign requirements for fans driven by motors with an electric input power between 125 W and 500 kW.
Źródło:
Combustion Engines; 2020, 59, 4; 15--20
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency Evaluation Method for the Devices with Infrasound Impact on Functioning of Computer Equipment
Autorzy:
Korchenko, A.
Tereykovsky, I.
Aytkhozhaevа, E.
Seilova, N.
Kosyuk, Y.
Wójcik, W.
Komada, P.
Sikora, J.
Powiązania:
https://bibliotekanauki.pl/articles/963897.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information security
computer hardware protection
infrasound
infrasound damage
efficiency evaluation method
Opis:
A significant threat to critical infrastructure of computer systems has a destructive impact caused by infrasound waves. It is shown that the known infrasound generations are based on using the following devices: a Helmholtz Resonator, Generation by using a Pulsating Sphere such as Monopolies, Rotor-type Radiator, Resonating Cylinder, VLF Speaker, Method of Paired Ultrasound Radiator, and airscrew. Research of these devices was made in this paper by revealing their characteristics, main advantages and disadvantages. A directional pattern of infrasound radiation and a graph of dependence of infrasound radiation from the consumed power was constructed. Also, during the analysis of these devices, there was proven a set of basic parameters, the values of which make it possible to characterize their structural and operational characteristics. Then approximate values of the proposed parameters of each those considered devices, were calculated. A new method was developed for evaluating the effectiveness of infrasound generation devices based on the definition of the integral efficiency index, which is calculated using the designed parameters. An example of practical application of the derived method, was shown. The use of the method makes it possible, taking into account the conditions and requirements of the infrasound generation devices construction, to choose from them the most efficient one.
Źródło:
International Journal of Electronics and Telecommunications; 2018, 64, 2; 189-196
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying the RiskGrade measure in the risk analysis and the efficiency of Open Pension Funds
Zastosowanie miary RiskGrade do analizy ryzyka i efektywności Otwartych Funduszy Emerytalnych
Autorzy:
Mikulec, Artur
Powiązania:
https://bibliotekanauki.pl/articles/905685.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Risk analysis
RiskGrade measure
Open Pension Funds (OPFs)
Evaluation of Investing Efficiency
OFE
OFI
Opis:
The paper aims at reminding the classic risk measures and presenting the RiskGrade measure (1994). This statistic allows comparisons between the investment risk of different financial assets and also the risk of financial investments across different regions of the World. Some advantages and disadvantages of this measure of volatility and also technical problems of using will be described. After describing RiskGrade measure, the rating of Open Pension Funds (OPFs) considering the investment risk will be created. Obtained results will be compared with the risk of selected Open Investment Funds (OIFs) - with similar assets structure - operating on the Polish asset’s market. Next part of the paper contains the suggestion of the measure of efficiency of investment based on RiskMetrics volatility.
Celem niniejszego opracowania jest przypomnienie klasycznych miar ryzyka oraz prezentacja miary ryzyka RiskGrade (1994). Statystyka ta pozwala porównywać ryzyko inwestycyjne różnych aktywów finansowych, a także ryzyko inwestycji finansowych pochodzących z różnych regionów Świata. Przedstawione zostaną wady i zalety wspomnianej miary zmienności oraz techniczne problemy jej zastosowania. Po omówieniu metodologii RiskGrade zbudowany zostanie ranking Otwartych Funduszy Emerytalnych (OFE) pod względem ryzyka inwestycyjnego. Uzyskane wyniki porównane zostaną z ryzykiem wybranych Otwartych Funduszy Inwestycyjnych (OFI) - o podobnej strukturze aktywów - działających na polskim rynku kapitałowym. W kolejnym kroku przedstawiona zostanie propozycja miary efektywności inwestycji opartej na zmienności RiskMetrics.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2008, 216
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The method of the evaluation of the efficiency of the processes carried out at traffic maintenance subsystem posts
Metoda oceny wydajności procesów realizowanych na stanowiskach podsystemu utrzymania ruchu
Autorzy:
Migawa, K.
Powiązania:
https://bibliotekanauki.pl/articles/223752.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
means of transport
traffic maintenance subsystem
evaluation of the efficiency
środki transportu
eksploatacja środków transportu
podsystem utrzymania ruchu
ocena wydajności stanowisk
Opis:
In the systems of the exploitation of means of transport in order to assure correct carrying out of the assigned transport tasks, it is necessary to maintain the required number of vehicles in the state of task availability. It is obtained as a result of carrying out of service and repair processes at the traffic maintenance subsystem posts. From the point of view of the effectiveness of the operation of the systems of the exploitation of means of transport, the damaged technological objects should be serviced in the shortest possible time. In the case of the system of the exploitation of means of transport the task of the traffic maintenance subsystem is the servicing of the required number of damaged means of transport over the assigned time interval defined by the transport task timetable. One of the methods of the evaluation of the degree of carrying out of the processes at the traffic maintenance subsystem posts is defining the efficiency of the posts of the subsystem. This paper presents the method of defining the efficiency of traffic maintenance subsystem in the system of the exploitation of means of transport measured by the probability value of servicing of the required number of technological objects over the assigned time interval. The resulting characteristics were presented on a general basis as well as in the form of exponential distribution and Erlang distribution. Moreover, for the utilization data obtained in tests carried out in an actual means of transport system the values of the analyzed characteristics were defined. The evaluation of the efficiency of the traffic maintenance subsystem posts may serve as the basis of decision making as to the change of the number and type of the used service and repair posts in the tested system as well as modification of the carried out exploitation strategy. The suggested method may be used for individual post, a group of posts of a given type as well as for a subsystem of traffic maintenance analyzed as a whole.
W systemach eksploatacji środków transportu, w celu zapewnienia prawidłowej realizacji przydzielonych zadań przewozowych, konieczne jest utrzymywanie wymaganej liczby pojazdów w stanie zdatności zadaniowej. Uzyskiwane jest to w wyniku realizacji procesów obsługowo-naprawczych na stanowiskach podsystemu utrzymania ruchu. Z punktu widzenia efektywności działania systemu eksploatacji środków transportu, uszkodzone obiekty techniczne powinny zostać uzdatnione w możliwie najkrótszym czasie. W przypadku systemu eksploatacji środków transportu, zadaniem podsystemu utrzymania ruchu jest uzdatnienie wymaganej liczby uszkodzonych środków transportu, w przeznaczonym na ten cel przedziale czasu, określonym harmonogramem realizowanych zadań przewozowych. Jednym ze sposobów oceny stopnia realizacji procesów na stanowiskach podsystemu utrzymania ruchu jest wyznaczenie wydajności stanowisk tego podsystemu. W artykule przedstawiono metodę wyznaczania wydajności stanowisk podsystemu utrzymania ruchu w systemie eksploatacji środków transportu, mierzonej wartością prawdopodobieństwa uzdatnienia wymaganej liczby obiektów technicznych w przeznaczonym na ten cel przedziale czasu. Opracowane charakterystyki zostały przedstawione w sposób ogólny oraz dla rozkładu wykładniczego i rozkładu Erlanga. Następnie dla danych eksploatacyjnych, uzyskanych z badań przeprowadzonych w rzeczywistym systemie eksploatacji środków transportu, wyznaczono wartości analizowanych charakterystyk. Ocena wydajności stanowisk podsystemu utrzymania ruchu może stanowić podstawę podjęcia decyzji o zmianie liczby i typu stosowanych stanowisk obsługowo-naprawczych w badanym systemie oraz modyfikacji realizowanej strategii eksploatacyjnej. Zaproponowana metoda może być zastosowana zarówno dla pojedynczego stanowiska, zespołu stanowisk danego typu oraz dla podsystemu utrzymania ruchu analizowanego jako całość.
Źródło:
Archives of Transport; 2012, 24, 4; 509-517
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement and evaluation of the public administration performance through delivery of electronic services
Autorzy:
Batalli, Mirlinda
Powiązania:
https://bibliotekanauki.pl/articles/1036566.pdf
Data publikacji:
2015
Wydawca:
Academicus. International Scientific Journal publishing house
Tematy:
e-services
measurement
evaluation
performance
efficiency
Opis:
The purpose of this paper concerns the relation between delivery of electronic services (e-services) and evaluation of public administration performance. Public sector organizations should pay attention and determine the strategies to be followed in order to increase the satisfaction of citizens and businesses in relation to delivery of electronic services. The study aims to review the demands toward progress to the competitiveness, the sustainability, efficiency and effectives in public administration that have rapidly enforced the wide reforms in the public sector, in order to modernize the initiatives to offer better electronic services for the citizens. The article aims to present that the transformation process toward providing electronic services to the citizens should be assessed continuously, in light with challenges, demands and process of globalization, in order to strengthen the capacities of public administration and make it more efficient. In this regard, the regular evaluation and measurement of the public administration performance leads toward the promotion of enhanced public services and higher level of accountability. Through receiving the e-services, citizens can save their time, can reduce the expenses and create an easier access of communication with all levels of the government.
Źródło:
Academicus International Scientific Journal; 2015, 12; 169-179
2079-3715
2309-1088
Pojawia się w:
Academicus International Scientific Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving of mixing effi ciency in a stirred reactor for lead recycling using computer simulation
Zwiększenie wydajności łączenia w reaktorze mieszalnikowym dla odzysku ołowiu przy użyciu symulacji komputerowej
Autorzy:
Vite-Martinez, P.
Ramirez-Lopez, A.
Romero-Serrano, A.
Chavez-Alcala, F.
Lopez-Ramirez, S.
Powiązania:
https://bibliotekanauki.pl/articles/317869.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
mieszanie ołowiu
ocena wydajności mieszania
stężenie pierwiastka
obliczeniowa mechanika płynów (CFD)
lead stirring
mixing efficiency evaluation
tracer concentration
computational fluid dynamics (CFD)
Opis:
Recycling is helping to reduce environmental risks and damages. Liquid lead is recovered from batteries in stirred batch reactors. Nevertheless it is necessary to establish parameters to evaluate mixing performance in order to make more efficient the industrial practices. Then this work is dedicated to simulate fluid hydro-dynamics in a lead stirred reactor by monitoring the distribution of an injected tracer to find the best injection point. Different injected points have been evaluated monitoring the tracer concentration on a group of points inside the batch to verify mixing. The tracer is assumed as ideal (with the same physical properties than lead). The reactor is a batch with two geometrical sections one cylindrical body and a semispherical on the bottom. The impeller used to promote lead stirring is a shaft with four flat blades. The tracer concentration on the monitoring points is averaged to evaluate the efficiency all around the reactor. Finally invariability of tracer concentration on the monitoring points is adopted as the criterion to evaluate mixing.
Recykling pomaga zredukować ryzyko i szkody związane ze środowiskiem. Ciekły ołów z baterii odnawiany jest w reaktorze mieszalnikowym okresowym. Niemniej jednak, ważne jest by tak ustawić parametry, żeby ocenić skuteczność mieszania, a co za tym idzie, zwiększyć wydajność w praktykach przemysłowych. Następnie w artykule znajdujemy najlepsze miejsce do iniekcji przy użyciu symulacji dynamiki wodnej w płynie w reaktorze mieszalnikowym ołowiu, dzięki obserwacji ruchów wprowadzonego pierwiastka znaczonego. Różne punkty iniekcji zostały sprawdzone i monitorują pierwiastek znaczony w grupie punktów znajdujących się w reaktorze by zweryfikować mieszanie. Z założenia pierwiastek jest idealny (z tymi samymi właściwościami fizycznymi co ołów). Reaktor jest wsadowy z dwoma geometrycznymi sekcjami – jedną z cylindryczną obudową i drugą o półsferycznym dnie. Wirnik napędza mieszanie ołowiu w wale posiadającym cztery płaskie ostrza. Punkty monitorujące mają uśrednione stężenie pierwiastka w taki sposób, aby ocenić wydajność w całym reaktorze. Wreszcie, jednym z kryteriów wprowadzonych dla odpowiedniej oceny wydajności jest również niezmienność stężenia pierwiastka monitorującego.
Źródło:
Inżynieria Mineralna; 2015, R. 16, nr 1, 1; 25-32
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving Investment Efficiency by Using Renewable Energy Sources
Autorzy:
Grzeszczyk, T. A.
Izdebski, M.
Powiązania:
https://bibliotekanauki.pl/articles/409252.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
investment efficiency
renewable energy sources
project evaluation
Opis:
The reduction of natural resources and the ever increasing demand for energy forces research on new energy sources. In the case of obtaining energy from non-renewable sources of energy, natural resources are used as fuel in the combustion process. This way relatively high calorific value is achieved but it is associated with the number of fundamental flaws. Among other things, this may include destruction of the environment in the vicinity of extraction of conventional fuels’ sources, emission of large amounts of harmful substances during the combustion of conventional fuels causing the pollution of natural environment and there is a danger of life or health loss for people working in the extraction of fossil fuels. The use of renewable energy sources is related to interesting investment opportunities in the energy field and there are no problems mentioned above. For these reasons, it is worthwhile to conduct research on improving investment efficiency by using new, renewable sources. Therefore, the purpose of this paper is showing the opportunities of improving efficiency of electric power investment by using renewable energy sources. This article presents a comprehensive overview of renewable technologies used to produce electricity. Then, the attention was focused on assessing the financial efficiency of wind turbines. The considerations were illustrated with the examples of calculation of financial ratios NPV and IRR for a hypothetical investment in the production of electric power using the wind farm. The calculations and analysis conducted can provide interesting basis for further research on improving electric power investment efficiency by using renewable energy sources and new comprehensive evaluation methods of such investments. Comprehensive evaluation methods should take into consideration multifaceted nature of the projects.
Źródło:
Research in Logistics & Production; 2016, 6, 4; 331-342
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Scientific tools for assessing the resource potential of industrial enterprises in Ukraine
Narzędzia naukowe służące oszacowaniu potencjału zasobów przedsiębiorstw przemysłowych na Ukrainie
Autorzy:
Pochtovyuk, Andrii
Zaika, Kateryna
Powiązania:
https://bibliotekanauki.pl/articles/1985379.pdf
Data publikacji:
2021
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
resource potential
indicators of resource evaluation
methods of efficiency evaluation
production resources
labour resources
financial resources
potencjał zasobowy
wskaźniki oceny zasobów
metody oceny efektywności
zasoby
produkcyjne
zasoby pracy
zasoby finansowe
Opis:
The article aims to analyse the development of tools, and assess the resource potential for industrial enterprises in Ukraine, and it also discusses the ways of forming a scientific research methodology. The success of the functioning of an economic entity is determined by the level of resource availability, their structure, the rate of renewal, the efficiency of use and the level of specialization. The scope of an enterprise determines all of these factors by its resource potential. Economists are looking for the best solutions for its evaluation, and thus various ways of previously known and tested methods of improving are proposed. The authors noted that nowadays there is no uniform methodology for assessing the resource potential of an enterprise in the real sector of the
Artykuł ma na celu analizę rozwoju narzędzi i ocenę potencjału zasobowego przedsiębiorstw przemysłowych na Ukrainie, a także omówienie sposobów kształtowania metodologii badań naukowych. O sukcesie funkcjonowania podmiotu gospodarczego decyduje poziom dostępności zasobów, ich struktura, tempo odnawiania się, efektywność wykorzystania oraz stopień specjalizacji. Zakres przedsiębiorstwa determinuje wszystkie te czynniki poprzez jego potencjał zasobowy. Naukowcy ekonomiści szukają najlepszych rozwiązań do jego oceny; proponowane są różne sposoby dotychczas znanych i sprawdzonych metod doskonalenia. Autorzy zwracają uwagę, że nie ma obecnie jednolitej metodologii oceny potencjału zasobowego przedsiębiorstwa w realnym sektorze gospodarki. Istniejące narzędzia pomiarowe to odrębne wskaźniki charakteryzujące efektywność przedsiębiorstwa. Jednak dla pełnej oceny konieczne jest, aby była wszechstronna i systematyczna. W związku z tym zaproponowano procedurę i system wskaźników do oceny głównych rodzajów zasobów, które może zastosować każde przedsiębiorstwo przemysłowe w celu poprawy jego wydajności.
Źródło:
Biblioteka Regionalisty; 2021, 21; 111-123
2081-4461
Pojawia się w:
Biblioteka Regionalisty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new approach in separation process evaluation. Efficiency ratio and upgrading curves
Autorzy:
Irannajad, M.
Nuri, O. S.
Allahkarami, E.
Powiązania:
https://bibliotekanauki.pl/articles/110189.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
separation efficiency
mineral processing
selectivity index
process evaluation
efficiency ratio
operation efficiency
Separation Process
Opis:
In mineral processing separation efficiency (SE), operation efficiency (OE), selectivity index (SI) and other indices have been used to evaluate the separation process. Up to now, no study has been conducted on the relationship between the SE, OE and SI indices. In this research, two upgrading curves are proposed based on the above indices for process and selectivity evaluation. The first upgrading curve is based on recovery R, SE, and OE as a function of concentrate grade. This curve has three background lines, including no upgrading line, ideal upgrading line and the ideal mixing line. The proposed upgrading curve is applicable not only for process evaluation by specification of OE and SE, but also for selectivity evaluation with the lowest difference between SE and OE. The curve showed that the recovery value is always greater than the SE and OE values. The parameters of OE, SE and R were used for plotting the upgrading curve as a function of concentrate grade taking into consideration all of them at a time. A new selectivity indicator, namely Efficiency Ratio (ER) as the selectivity parameter, is proposed as the ratio of OE to SE. The ER values fluctuate between 1 and . It can be presented as a function of concentrate and tailing grades (ER = [c(1-t)]/[1(c-t)]). The results showed that ER is insensitive to the feed grade and has the inverse relationship with SI. To measure the separation selectivity, another upgrading curve is proposed based on ER and SI parameters. This curve is divided into seven separation classes for evaluation the class of a separation process from ideal class to no separation one. The results of this research can be useful for separation process evaluation.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 3; 847-857
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discounting and ideas of intergenerational equity and sustainability
Autorzy:
Rybicki, W.
Powiązania:
https://bibliotekanauki.pl/articles/406555.pdf
Data publikacji:
2012
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
discounting
evaluation
preferences
equity
efficiency
sustainable development
present
future
Opis:
Some aspects of discounting of infinite streams of economic quantities (consumption, saving, utility) are considered. The main points of the paper may be summarized as follows. The philosophy of discounting concerns methods of evaluation and/or comparison of multi-period phenomena and processes. The techniques applied (numerical, analytical) may equalize the gravity of subsequent generations or privilege certain generations rather than other ones. They can – to some extent – influence quality of life and the chances of survival in future generations. These (quite natural) connections between discounting and intergenerational justice and sustainability have been pointed out. Systems of axioms for “ethical” and “sustainable” preferences are presented, together with some related (sub)disciplines. Inspirations derived mainly from psychology suggest the modification of the geometric discounting paradigm by slowing down the convergence of discount factors to zero. It should be pointed out that such “heavy tailed” discounting has proved to be useful (and become strongly recommended) for evaluation of a variety of long-time horizon undertakings. Some examples of non-classical discounting rules are given. Finally, the author’s proposal of modeling the duration of the world as a Poisson random variable has been formulated.
Źródło:
Operations Research and Decisions; 2012, 22, 1; 63-84
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model of Evaluation of the Management Effectiveness of State Corporate Rights of Industrial Enterprises in Ukraine
Autorzy:
Galchinsky, Leonid
Powiązania:
https://bibliotekanauki.pl/articles/489000.pdf
Data publikacji:
2014
Wydawca:
Instytut Badań Gospodarczych
Tematy:
evaluation of enterprises
efficiency of management
integral performance criteria
ordinal regression
Opis:
This paper proposes a method for increasing the efficiency of state corporate rights management of industrial enterprises by clarifying the evaluation of the efficiency of their management. This method is a model of comprehensive eval-uation of enterprises on the basis of data that resulted in the reporting documents. Three groups of indicators were adopted and included: commercial, non-commercial and managing criteria. Integral performance criterion is the weighted sum of those three groups. Model performance evaluation was built using ordinal regression. Based on this model estimate the efficiency of state corporate rights management of industrial enterprises was obtained more accurately, providing a wide range of estimates.
Źródło:
Oeconomia Copernicana; 2014, 5, 4; 75-94
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of modern approaches to evaluating the effectiveness of innovation for water treatment in irrigation
Autorzy:
Rokochinskiy, Anatoliy
Bilokon, Vyacheslav
Frolenkova, Nadiia
Prykhodko, Nataliіa
Volk, Pavlo
Tykhenko, Ruslan
Openko, Ivan
Powiązania:
https://bibliotekanauki.pl/articles/293056.pdf
Data publikacji:
2020
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
economic efficiency
evaluation
investments
modern methodological approaches
vibrating filter
water treatment
Opis:
The geographical location and climatic conditions of Ukraine cause the active development of land reclamation, as it enables to ensure stable and high yields. The complexity of forecasting in this area, namely the dependence of the results on the changing weather and climate conditions, does not allow to effectively use the standard instruments for justifying the investment for agricultural and land reclamation innovation. The necessity of improving methodological approaches to evaluating the effectiveness of investments in projects in the field of agricultural production and land reclamation was substantiated. The proposed approaches were tested on the advanced technology of water treatment in irrigation based on using a vibrating gravitation filter enabling to perform simultaneously the processes of water treatment and filter element regeneration. The obtained results clearly show that the advanced technology of irrigation water treatment and the developed for this technology design of the vibrating gravity filter are cost-effective. The current payback period for irrigation projects when using the purified water under this advanced technology is 5 years. It is the same as for the irrigation projects when using clean irrigation water. Thus, our proposed approaches to the evaluation of investments in new water treatment technologies applied in irrigation enable to adapt the modern methodology of analysis of economic and investment efficiency of projects to the domestic needs of agricultural production, namely to take into account the impact of changing weather and climate conditions on the resulting economic parameters.
Źródło:
Journal of Water and Land Development; 2020, 45; 119-125
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The main achievements of the EU structural funds 2007?2013 in the EU member states: efficiency analysis of transport sector
Autorzy:
Melecký, Lukáš
Powiązania:
https://bibliotekanauki.pl/articles/22446551.pdf
Data publikacji:
2018
Wydawca:
Instytut Badań Gospodarczych
Tematy:
DEA
efficiency
European Regional Development Fund
ex-post evaluation
Cohesion Fund
Opis:
Research background: The European Union currently provides financial support to the Member States through various financial tools from European Structural and Investment Funds 2014-2020, and previously from the EU Structural Funds. In both terminologies, the funds represent the main instrument of EU Cohesion Policy to sustain territorial development, to increase competitiveness and to eliminate regional disparities. The overall impact of EU Funds depends on the structure of funding and absorption capacity of the country. Purpose of the article: The efficiency of funding across the EU Member States is a fundamental issue for EU development as a whole. The Author considers deter-mining the efficiency of EU Funds as an issue of high importance, and therefore this paper provides a contribution to the debate on the role of EU Cohesion Policy in the Member States. The paper focuses on territorial effects of relevant EU Funds in programming period 2007-2013 in infrastructure through efficiency analysis. Methods: Efficiency analysis is based on data at the country level, originating from ex-post evaluation of Cohesion Policy programmes 2007-2013 and representing the input and output variables to analyse whether the goal of fostering growth in the target countries have been achieved with the funds provided, and whether or not more resources generated stronger growth effects in transport accessibility. The paper deals with comparative cross-country analysis, descriptive analysis of dataset and multiple-criteria approach of Data Envelopment Analysis (DEA) in the form of output-oriented BCC VRS model of efficiency and output-oriented APM VRS subsequently model of super-efficiency. Findings & Value added: The paper aims to test the factors of two inputs and five outputs, trying to elucidate the differences obtained by the Member States in effective use of the European Regional Development Fund and the Cohesion Fund in the transport sector. The paper determines if the countries have been more efficient in increasing their levels of competitive advantages linked with transport. Preliminary results reveal that most countries with a lower amount of funding achieve higher efficiency, especially countries in a group of so-called 'old EU Member States', i.e. group EU15.
Źródło:
Equilibrium. Quarterly Journal of Economics and Economic Policy; 2018, 13, 2; 285-306
1689-765X
2353-3293
Pojawia się w:
Equilibrium. Quarterly Journal of Economics and Economic Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 35

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