Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Net" wg kryterium: Temat


Tytuł:
Baire measurable solutions of a generalized Gołąb–Schinzel equation
Autorzy:
Jabłońska, Eliza
Powiązania:
https://bibliotekanauki.pl/articles/746002.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
generalized Gołąb–Schinzel equation
net
finer net
Baire measurability
Opis:
J. Brzdęk [1] characterized Baire measurable solutions \(f\colon X \to K\) of the functional equation \[ f (x + f (x)^n y) = f (x)f (y) \] under the assumption that \(X\) is a Fréchet space over the field \(K\) of real or complex numbers and \(n\) is a positive integer. We prove that his result holds even if \(X\) is a linear topological space over \(K\); i.e. completeness and metrizability are not necessary.
Źródło:
Commentationes Mathematicae; 2010, 50, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some Properties of the Eigenvalues of the Net Laplacian Matrix of a Signed Graph
Autorzy:
Stanić, Zoran
Powiązania:
https://bibliotekanauki.pl/articles/32304147.pdf
Data publikacji:
2022-08-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
(net) Laplacian matrix
edge perturbations
largest eigenvalue
net-degree
Opis:
Given a signed graph $ \dot{G} $, let $ A_{ \dot{G} } $ and $ D_{\dot{G}}^\pm $ denote its standard adjacency matrix and the diagonal matrix of vertex net-degrees, respectively. The net Laplacian matrix of $ \dot{G} $ is defined to be $ N_{ \dot{G} } = D_{\dot{G}}^\pm - A_{ \dot{G} } $. In this study we give some properties of the eigenvalues of $ N_{ \dot{G} } $. In particular, we consider their behaviour under some edge perturbations, establish some relations between them and the eigenvalues of the standard Laplacian matrix and give some lower and upper bounds for the largest eigenvalue of $ N_{ \dot{G} } $.
Źródło:
Discussiones Mathematicae Graph Theory; 2022, 42, 3; 893-903
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE NET GENERATION IN JAPAN: A SURVEY OF INTERNET BEHAVIOURS OF STUDENTS AGED 13-21
Autorzy:
Taynton, Keith
Powiązania:
https://bibliotekanauki.pl/articles/569767.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
Tematy:
blogging
Internet
Net Generation
Opis:
Evidence from research into the “net generation” has shown it is not certain that there is a homogenous group of young people whose abilities to use technology are different from any other age group. With tools like blogs and online research becoming more popular in educational contexts research needs to provide a picture of what kinds of abilities and preferences students have so that appropriate teaching can be provided. This study examines the Japanese context in three areas: 1) Technology ownership, frequency of use, and perceptions of ability; 2) Frequency and type of use of the Internet; 3) Use and perceptions of institution Websites. Students at two universities and one middle and high school (193 male, 197 female, ages 13 to 21) responded and the analysis seems to confirm other studies’ results. They tend to own a lot of Internet-connected technology, especially mobile devices, are familiar with and frequently use the Internet, and perceive themselves competent to do so. However, their use is mostly for entertainment and not for learning or content creation. In conclusion, young people do not seem to be especially proficient at using technology for learning and may need technical or pedagogical support for sophisticated online educational tasks such as research or blogging.
Źródło:
Teaching English with Technology; 2012, 12, 1; 3-19
1642-1027
Pojawia się w:
Teaching English with Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Observed and modelled solar radiation components in sugarcane crop grown under tropical conditions
Autorzy:
A. dos Santos, Marcos
L. de Souza, José
B. Lyra, Gustavo
Teodoro, Iêdo
A. Ferreira Junior, Ricardo
C. dos Santos Almeida, Alexsandro
B. Lyra, Guilherme
C. de Souza, Renan
A. Maringolo Lemes, Marco
Powiązania:
https://bibliotekanauki.pl/articles/972744.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
sugarcane
albedo
net radiation
Opis:
The net radiation over vegetated surfaces is one of the major input variables in many models of soil evaporation, evapotranspiration as well as leaf wetness duration. In the literature there are relatively few studies on net radiation over sugarcane crop in tropical climates. The main objective of the present study was to assess the solar radiation components measured and modelled for two crop stages of a sugarcane crop in the region of Rio Largo, Alagoas, North-eastern Brazil. The measurements of the radiation components were made with a net radiometer during the dry and rainy seasons and two models were used to estimate net radiation: the Ortega-Farias model and the Monteith and Unsworth model. The highest values of net radiation were observed at the crop development stage, due mainly to the high indices of incoming solar radiation. The daily average albedos of sugarcane at the crop development and mid-season stages were 0.16 and 0.20, respectively. Both models showed a better fit for the crop development stage than for the mid-season stage. When they were inter-compared, Monteith and Unsworth model was more efficient than Ortega-Farias model, despite the dispersion of their simulated radiation components which was similar.
Źródło:
International Agrophysics; 2017, 31, 2
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical principles of artificial neural networks
Autorzy:
Bielecki, A.
Powiązania:
https://bibliotekanauki.pl/articles/747868.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
neural net, topological invariants
Opis:
Artykuł zawiera podstawowe pojęcia teorii sieci neuronowych. Nacisk położono na teoretyczne aspekty analizy takich sieci.
This paper presents basic ideas of neural nets and some applications. The emphasis is on theoretical aspects of neural net analysis. Examples of such complete mathematical analyses are cited as well.
Źródło:
Mathematica Applicanda; 2003, 31, 45/04
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Where the EBITDA metric is used in coal companies
Obszary wykorzystania miernika EBITDA w spółkach węglowych
Autorzy:
Sierpińska-Sawicz, Agata
Sierpińska, Maria
Królikowska, Elżbieta
Powiązania:
https://bibliotekanauki.pl/articles/216545.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
EBITDA margin
net margin
net debt
marża EBITDA
rentowność netto
dług netto
Opis:
The paper presents areas where the EBITDA measure is used in coal companies. The metric and the ratios where it is utilized are employed to assess companies and management efficiency, hence they are used as criteria for rewarding board members. EBITDA-based ratios are also used to evaluate the profitability of company restructuring and its goodwill in mergers and acquisitions. EBITDA, also tends to be used to value companies on the capital market. It is a good tool for efficiency assessment in coal companies with relatively stable fixed assets and small share of intangible assets, which amortized over short periods of time could interfere the comparability of relations based on this measure. The comparability is also disturbed by large investment expenditure incurred in the short term. This does not apply to the mining industry, in which investment cycles are long, last several years and expenditures are spread over time. In addition, the rate of technical progress imposing the need to implement large technology projects is not high compared to technology companies with high development dynamics. EBITDA based ratios were used to assess a number of listed coal companies. The analysis revealed that the profit/loss of these companies is mainly determined by coal prices. The cost of coal mining is 90% fixed and projects undertaken to reduce it bear fruit only over the long term. Cyclically changing coal prices cause major losses in companies when prices are low, which leads to bankruptcies or a need to restructure. After a period of decline in 2014–2016, the profit/loss of Polish coal companies as well as companies from around the world improved in 2017–2018. The financial standing of Polish companies was better than that of their counterparts from other parts of the world.
W artykule zaprezentowane zostały obszary wykorzystania miernika EBITDA w spółkach węglowych. Miernik ten i budowane na jego podstawie relacje są wykorzystywane do oceny efektywności funkcjonowania spółek i skuteczności zarządzania, stąd służą do premiowania członków zarządu. Relacje oparte na EBITDA służą też do oceny opłacalności restrukturyzacji spółek, wyceny ich wartości w procesach fuzji i przejęć oraz wyceny spółek na rynku kapitałowym. EBITDA jest dobrym narzędziem do oceny efektywności spółek węglowych, które mają względnie stabilne aktywa, a w ich strukturze udział wartości niematerialnych i prawnych jest niewielki. Wartości te są amortyzowane w krótkim okresie czasu, co może zakłócać porównywalność relacji ustalanych w oparciu o ten miernik. Porównywalność zakłócają, duże wydatki inwestycyjne ponoszone w krótkim okresie czasu. Nie dotyczy to branży górniczej, w której cykle inwestycyjne są długie, a nakłady są rozłożone w czasie. Ponadto tempo postępu technicznego narzucające konieczność realizacji dużych przedsięwzięć technologicznych w branży węglowej nie jest wysokie w porównaniu do spółek technologicznych o dużej dynamice rozwoju. Relacje oparte na EBITDA wykorzystane zostały do oceny kilkunastu spółek węglowych notowanych na giełdach. Przeprowadzona analiza wykazała, że wyniki finansowe tych spółek są zdeterminowane głównie cenami węgla. Koszty wydobycia węgla w 90% mają charakter stały, a przedsięwzięcia podejmowane w celu ich obniżki skutkują w długim okresie czasu. Zmieniające się cyklicznie ceny węgla powodują w okresie ich spadku głębokie straty w spółkach, co prowadzi do ich upadłości bądź konieczności restrukturyzacji. Wyniki finansowe polskich spółek węglowych po okresie spadku w latach 2014–2016 podobnie jak i spółek światowych odbudowały swoje wyniki w latach 2017–2018. Spółki polskie mają dobrą kondycję finansową w porównaniu ze spółkami światowymi.
Źródło:
Gospodarka Surowcami Mineralnymi; 2020, 36, 2; 109-126
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ICS System Supporting the Water Networks Management by Means of Mathematical Modelling and Optimization Algorithms
Autorzy:
Studzinski, J.
Powiązania:
https://bibliotekanauki.pl/articles/385196.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
drink water distribution system
water net hydraulic model
hydraulic optimization
water net management
Opis:
In the/this paper a concept of an integrated information system for complex management of water networks is presented. The ICT system is under development at the Systems Research Institute (IBS PAN) in Warsaw for a couple of years and it is gradually tested in some Polish communal waterworks of differentiated size. Several waterworks management tasks requiring mathematical modelling, optimization and approximation algorithms can be solved using this system. Static optimization and multi-criteria algorithms are used for solving more complicated tasks like calibration of the water net hydraulic model, water net optimization and planning, control of pumps in the water net pump stations etc. [4] But some of the management tasks are simpler and can be performed by means of repetitive simulation runs of the water net hydraulic model. The water net simulation, planning of the SCADA system, calculation of water age and chlorine concentration in the water net, localization of hidden water leaks occurring in the network and planning of water net revitalization works are the examples of such tasks executed by the ICT system. They are described in this paper.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2015, 9, 4; 48-54
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis, Modelling and Planning the Communal Sewarage Systems
Autorzy:
Studziński, J.
Petriczek, G.
Powiązania:
https://bibliotekanauki.pl/articles/384897.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
drink water networks
hydraulic water nets modeling
water net revitalization
water net reliability
Opis:
The hydraulic calculations of sewage networks are done ususally by the use of nomograms being the diagrams that show the relation between the main network parameters like pipe diameters, flow rates, hydraulic slopes and flow velocities. In traditional planning of sewage networks the appropriate hydraulic values are read mechanically from the the nomograms. Another way of calculation is the use of professional programs like the SWMM5 hydraulic model and genetic or heuristic optimization algorithms. In the paper still another way of realizing the hydraulic and planning calculations is presented in which the basic hydraulic rules and formulas describing the sewage networks and their functioning are used. The numerical solutions of nonlinear equations resulted from the formulas and describing the main phenomena of sewage flows are used in the paper to solve the tasks of hydraulic calculation and planing of the networks.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2016, 10, 4; 53-61
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A high-level Petri net model of queueing production system
Autorzy:
Kuzmin, O.
Bazylevych, P
Powiązania:
https://bibliotekanauki.pl/articles/118257.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
queueing production system
Petri net
Opis:
In the paper a high-level Petri model for widespread queueing networks in production systems with many customers, several queues with independent production buffers and different service nodes is presented. Requests can be either single- or polytypic. Such parameters of system as productivity, queue length and waiting time are evaluated.
Źródło:
Applied Computer Science; 2014, 10, 3; 78-85
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phytoplankton composition and biomass distribution in the southern Drake Passage, the Bransfield Strait and the adjacent waters of the Weddell Sea in December 1983 — January 1984 (BIOMASS -SIBEX)
Autorzy:
Kopczyńska, Elżbieta E.
Ligowski, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2057362.pdf
Data publikacji:
1985
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Antarctic
SIBEX
net phytoplankton
distribution
Źródło:
Polish Polar Research; 1985, 6, 1-2; 65-77
0138-0338
2081-8262
Pojawia się w:
Polish Polar Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Żywiołowe rozprzestrzenianie się Poznania: profil morfologiczny i mikroekonomiczny
Urban Sprawl of Poznań: Morphological and Microeconomic Profile
Autorzy:
Lityński, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1022881.pdf
Data publikacji:
2020-12-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
urban sprawl
morphology
households
net costs
net benefits
morfologia
gospodarstwa domowe
koszty netto
korzyści netto
Opis:
The aim of the article is to assess Poznań’s urban sprawl from the perspective of the morphology of space and financial situation of suburban households. The morphological assessment uses a method based on two grids of squares with a side: 1 km, 500 m; and data on the location of buildings from CCGCD. On the other hand, the assessment of households was carried out on the basis of the CSO Household Budget database. The results of the research indicate that the analyzed communes in the Poznań area are characterized by a moderate degree of disorder in the spatial structure. There are no communes with a completely compact specificity, there are also no communes with an absolutely high degree of spatial disorder. Households causing urban sprawl in Poznań are entities that incur moderate financial losses in order to maximize their housing preferences.
Celem artykułu jest ocena urban sprawl Poznania z perspektywy morfologii przestrzeni oraz sytuacji finansowej podmiejskich gospodarstw domowych. Ocena morfologiczna wykorzystuje metodę opartą na dwóch siatkach kwadratów o boku: 1 km, 500 m oraz danych o lokalizacji zabudowy z GUGiK. Natomiast ocena gospodarstw domowych przeprowadzona została w oparciu o bazę Budżetów Gospodarstw Domowych GUS. Rezultaty badań wskazują, że analizowane gminy na obszarze poznańskim charakteryzują się umiarkowanym stopniem bezładu struktury przestrzennej. Brak jest gmin o specyfice całkowicie zwartej, brak jest również gmin o bezwzględnie wysokim stopniu bezładu przestrzennego. Gospodarstwa powodujące urban sprawl Poznania to jednostki, które dla maksymalizacji preferencji mieszkaniowych ponoszą umiarkowane straty finansowe.
Źródło:
Rozwój Regionalny i Polityka Regionalna; 2020, 52; 81-99
2353-1428
Pojawia się w:
Rozwój Regionalny i Polityka Regionalna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enterprise valuation using the adjusted net assets methodology – case study
Autorzy:
Janas, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/951005.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
company valuation
net assets
equity
liabilities
Opis:
The purpose of this article is to supplement the space between the theoretical and practical approach to business valuation method adjusted net assets. The combination of legal principles and recommendations of how to establish the theoretical adjustment of individual balance sheet items valued companies, using the examples from the Polish capital market, allows the reader familiar with same accounting policies to make the company’s valuation using the presented method. The author proposes ways to determine the corrections, especially for other funds, unlisted joint stock companies and bonds due to the acceptance of an independent auditor and the Financial Supervisory Commission who, in turn, provide an assurance of the correctness of a valuation prepared in this way.
Źródło:
Financial Sciences. Nauki o Finansach; 2013, 3 (16); 23-36
2080-5993
2449-9811
Pojawia się w:
Financial Sciences. Nauki o Finansach
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the effect of insect net used in greenhouse on indoor conditions: pepper plant sample
Autorzy:
Ocak, Aytekin
Atılgan, Atılgan
Powiązania:
https://bibliotekanauki.pl/articles/101436.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
Tematy:
insect net
solar radiation
temperature
greenhouse
Opis:
The aim of this study is to determine the effects of insect net placed on ventilation openings in greenhouses on temperature, humidity and radiation energy from indoor conditions. In addition, the effects of insect net on the agents used in biological control have been tried to be determined. The study was carried out between November 2017 and May 2018 in Kumluca district of Antalya in 2 glass and 2 plastic greenhouses. Greenhouses; the glass greenhouse without insect net (GCG), the glass greenhouse with insect net (GNG), the plastic greenhouse without insect net (PCG), the plastic greenhouse with insect net (PNG) is named as. Temperature, humidity and solar radiation values were measured in greenhouses. According to the results of the research; It was determined that the recommended temperature values for pepper development are only suitable in January and well below the recommended values in February. In other production months, the average temperature values of with insect net greenhouses (PNG-GNG) used in ventilation openings were found to be higher than without insect net greenhouses (PCG-GCG). When the results of relative humidity values were examined, it was observed that the use of insect tulle in the greenhouses was lower than the control greenhouses. It was determined that the solar radiation values were lower than the control greenhouses (PCG-GCG) of the insect tulle greenhouses (PNGGNG) in other months except January and May. Therefore, we can say that the use of insect net reduces the amount of solar radiation. Accord ing to the results of temperature values; the growth of Orius Leavigatus and Amblyseius swirski, one of the biological agents and resistant to high temperatures, was observed to slow down in all other months except February. For Phytoseiulus persimilis (30°C and above), we can say that this is a suitable environment and that the eggs have emerged in a shorter time. The most suitable average temperature for the development of Aphidius colemani was reached only in January. In other months, the development of this agent slows down, parasitic insecticides can be said to decrease the rate of parasitoids. As a result; It was determined that the temperature values were higher in the greenhouses where insect net was used and the solar radiation values were lower than the control greenhouses. However, since the use of insect net causes the temperature in the greenhouse to increase, it may create a positive development for some bio agents. It is thought that producers using insect net should make production considering these negativities in temperature and solar radiation.
Źródło:
Infrastruktura i Ekologia Terenów Wiejskich; 2019, III/1; 197-217
1732-5587
Pojawia się w:
Infrastruktura i Ekologia Terenów Wiejskich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE USE OF A VALUE AT RISK MEASURE FOR THE ANALYSIS OF BANK INTEREST MARGINS
Autorzy:
Gemzik-Salwach,, Agata
Powiązania:
https://bibliotekanauki.pl/articles/599468.pdf
Data publikacji:
2012
Wydawca:
Wyższa Szkoła Informatyki i Zarządzania z siedzibą w Rzeszowie
Tematy:
VaR
risk management
net interest margin
Opis:
The article describes the use of a Value at Risk measure to analyze the effectiveness of a bank. Among various existing possibilities of using this measure, the use of a new method has been proposed, namely, correcting various indicators of bank interest margins by using the Value at Risk measure. The newly established measures were then subjected to empirical tests, whose main objective was to test the capacity of the information resulting from the recourse to the proposed indicators. Using the data from financial statements of banks listed on the Stock Exchange in Warsaw in the years 1998-2012, two types of risk-adjusted bank interest margins were calculated, which provided a way to set the minimum levels that can be expected with the probability assumed in the calculation. The way in which these values are formed over time was then analyzed and they were finally compared with the typical values.
Źródło:
Finansowy Kwartalnik Internetowy e-Finanse; 2012, 8, 4; 15-29
1734-039X
Pojawia się w:
Finansowy Kwartalnik Internetowy e-Finanse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integration of queries to heterogeneous data sources using linq technology
Autorzy:
Rusek, M.
Maguza, J.
Karwowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/95017.pdf
Data publikacji:
2018
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
query languages
LINQ
extension methods
.NET
Opis:
Nowadays, the data are available in a variety of formats such as relational database tables, xml files, rdf files or simply text files. Database systems have their own query languages and tools for the manipulation of data. On the other hand, most of today's applications are created in languages based on the object-oriented paradigm. From the level of the programming language it is important to use different sources of data in a uniform manner. The paper discusses the elements of the various query languages such as SQL XQuery or SPARQL. And then shows the capabilities of LINQ and its role in the creation of abstract data access layer. Then the possibilities of LINQ extension are discussed. As the example, design and implementation of LINQ provider for Allegro is presented.
Źródło:
Information Systems in Management; 2018, 7, 3; 180-189
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies