Informacja

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

Wyszukujesz frazę "Method" wg kryterium: Temat


Tytuł:
Quantitative time management methods in project management
Metody ilosciowe organizacji czasu w zarzadzaniu projektami
Autorzy:
Walczak, R.
Powiązania:
https://bibliotekanauki.pl/articles/792393.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
project management
software
quantitative method
critical path method
relationship network
PERT method
algorithm
calculation method
GERT method
probabilistic method
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 2
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative time management methods in project management
Metody ilosciowe organizacji czasu w zarzadzaniu projektami
Autorzy:
Walczak, R.
Powiązania:
https://bibliotekanauki.pl/articles/792116.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
project management
quantitative method
critical path method
management method
algorithm
calculation
relationship network
PERT method
GERT method
software
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of determination methods of vibrations damping coefficients for complex structures
Autorzy:
Flaga, A.
Szulej, J.
Wielgos, P.
Powiązania:
https://bibliotekanauki.pl/articles/390348.pdf
Data publikacji:
2008
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
damping
potential energy method
kinetic energy method
collocation method
half-power bandwidth method
Opis:
The purpose of this paper is to present methods of vibrations damping coefficient determination. The methods, such as collocation method, two energetic methods and half-power bandwidth method concern composite structures. The verification of methods has been taken into account in this work. Two real compound models and two numerical models have been created. Time series of vibrations of these models have been measured and calculated. The comparison of four methods has been made on the basis of obtained results.
Źródło:
Budownictwo i Architektura; 2008, 3, 2; 53-61
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis, properties and applications of graphene oxide: an overview
Autorzy:
Nanda, Saswati
Gaur, Atirek
Duchaniya, Rajendra Kumar
Powiązania:
https://bibliotekanauki.pl/articles/1030153.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Brodie’s method
Graphene Oxide
Hummer’s method
Modified Hummer’s method
Staudenmaier method
Opis:
This paper introduces different methods of synthesis of graphene oxide, properties, and applications of graphene oxide (GO). Unique structural, optical, mechanical, thermal, electrical, barrier properties, excellent biocompatibility Broaden the applications of GO in several fields of science and technology. GO a versatile material is a two-dimensional structure contains oxygen-based functional groups. Hydrophilic nature, Corrosion resistance property of GO makes it a hot area of research in nanocomposite coating fields.
Źródło:
World Scientific News; 2020, 143; 17-27
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study on Effective Educational Methods with the Change of Confucian Values in Korea
Autorzy:
Moon, Hyoung-Jin
Nam, Jong-ho
Powiązania:
https://bibliotekanauki.pl/articles/1967626.pdf
Data publikacji:
2019-09-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
Confucian awareness
cramming teaching method
mixed teaching method
discussion teaching method
audiovisual teaching method
Opis:
The purpose of this study was to explore the degree of Confucian awareness among Korean university students, and to develop more effective education measures. Before the experiment, Korean university students preferred a cramming teaching method (CTM) and an audiovisual teaching method (ATM). After observing four education methods such as the CTM, the discussion teaching method (DTM), the mixed teaching method of cramming and discussion (MTM), and the audiovisual teaching method (ATM) over two weeks, however, the study found that freshmen and sophomore students prefer the MTM, while junior and senior students prefer the DTM. This implies that the preferred teaching method for Korean university students is the CTM when the level of Confucian awareness is high, but as the level of awareness is reduced, the method progresses to DTM through MTM. In other words, it could be found that different methods of education need to be employed depending on the degree of identified Confucian-style values of students.
Źródło:
The New Educational Review; 2019, 57; 139-150
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method to Teach Korean History to Migrant Brides in Korea from China, Vietnam, and Japan
Autorzy:
Moon, Hyoung-Jin
Nam, Jong-Ho
Powiązania:
https://bibliotekanauki.pl/articles/1963976.pdf
Data publikacji:
2020-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
history education
cramming teaching method
comparative-history teaching method
discussion teaching method
audiovisual teaching method
Opis:
To find a more effective teaching method, the acceptance of migrant brides from China, Vietnam, and Japan of Korean history was investigated using the survey method. Four types of teaching methods were investigated. Before participating in the survey, migrant brides from Vietnam preferred the cramming teaching method (CTM), and those from China and Japan favored an audiovisual teaching method (ATM). However, after experiencing four types of teaching methods for a week—the CTM, ATM, comparative-history teaching method (CHTM), and discussion teaching method (DTM)—participants from Vietnam indicated the highest preference for ATM, whereas those from Japan and China preferred CHTM. Ultimately, this study demonstrated that a comparative-history teaching method is most effective for teaching migrant brides from countries with a history of recurrent cultural conflicts with Korea.
Źródło:
The New Educational Review; 2020, 62; 103-114
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane metody wspomagające podejmowanie decyzji inwestycyjnych w energetyce
Selected methods aiding investment decisions in power engineering
Autorzy:
Michalak, J.
Powiązania:
https://bibliotekanauki.pl/articles/282623.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
metoda NPV
metoda IRR
metoda DPBP
metoda ROI
metoda ROE
metoda SPBP
NPV method
IRR method
DPBP method
ROI method
ROE method
SPBP method
Opis:
W artykule przedstawiono i scharakteryzowano wybrane metody oceny efektywności ekonomicznej przedsięwzięć wspomagające podejmowanie decyzji inwestycyjnych w energetyce. Zagadnienia dotyczące rachunku ekonomicznego decyzji inwestycyjnych stanowią bardzo ważną kwestię w elektroenergetyce. Wśród metod rachunku efektywności ekonomicznej inwestycji wyróżniamy dwie grupy: metody tradycyjne, zwane też metodami prostymi lub statycznymi oraz metody dyskontowe, zwane metodami dynamicznymi. Pierwsze z nich tzn. metody tradycyjne nie uwzględniają zmienności wartości pieniądza w czasie i opierają się na zysku jako mierze korzyści netto. Metody dyskontowe natomiast uwzględniają zmienność wartości pieniądza w czasie i opierają się na przepływach pieniężnych, wykorzystując zasady rachunku dyskonta. Metody dynamiczne powinny obejmować cały planowany okres „życia" obiektu i uwzględniać cztery etapy: etap przedinwestycyjny, inwestycyjny, operacyjny i etap związany z likwidacją obiektu. W artykule opisano następujące metody tradycyjne: stopa zwrotu nakładów inwestycyjnych ROI (Return of Investment), stopa zwrotu z kapitału własnego ROE (Return of Equity) oraz prosty okres zwrotu nakładów inwestycyjnych SPBP (Simple Pay Back Period). Spośród metod dyskontowych scharakteryzowano następujące metody: zaktualizowana (bieżąca) wartość netto NPV (Net Present Value), wewnętrzna stopa zwrotu IRR (Internal Rate ofReturn) oraz zdyskontowany okres zwrotu nakładów inwestycyjnych DPBP (Discounted Pay Bach Period). Wartość bieżąca netto NPV i wewnętrzna stopa zwrotu IRR odgrywają dominującą rolę w ocenie inwestycji elektroenergetycznych. Za najbardziej opłacalną uważa się inwestycję o najwyższej wartości bieżącej netto NPV, jak i o największej wartości wewnętrznej stopy zwrotu IRR. Uwzględniając prosty okres zwrotu nakładów inwestycyjnych SPBP (Simple Pay Back Period) oraz zdyskontowany okres zwrotu nakładów inwestycyjnych DPBP za najbardziej optymalną inwestycję uważa się tę o najkrótszym okresie zwrotu nakładów inwestycyjnych. Przedsięwzięcie wykazuje największą opłacalność jeśli mierniki metod statycznych takie jak ROI oraz ROE mają najwyższą wartość.
This paper presents and characterizes selected methods of evaluating the economic profitability of investments aiding in decision making in power engineering. These methods were used for two coal power plants, one fired with hard coal and one fired with brown coal. Problems concerning the economic accounting of investment decisions are very important issue in power engineering. Among economic investment accounting methods, two groups may be distinguished traditional methods (also called the simple or statistical methods) and discount methods (also called dynamic methods). Traditional methods do not take into consideration the time changeability of money value and are based on net profit as a measure. Discounted methods take into consideration the time changeability of money value and are based on money flow, making use of discount accounting. Dynamic methods should concern all periods of the life of a plant and include four stages pre-investment stage, investment stage, phase of operation, and phase of liquidation. This paper examines the following traditional methods: Return on Investment (ROI), Return on Equity (ROE), and Simple Pay Back Period (SPBP). The following discount methods were characterized: Net Present Value, (NPV), Internal Rate of Return (IRR), and Discounted Pay Back Period (DPBP). NPV and IRR play a dominant role in the evaluation of power engineering investments. Investment with the highest NPV and the highest possible IRR is considered to be optimal. Taking into consideration SPBP and DPBP, the investment with the shortest period of DPBP is considered to be optimal. An investment has the highest profitability when measures of statistical methods such as ROI, ROE have the highest value.
Źródło:
Polityka Energetyczna; 2013, 16, 4; 77-86
1429-6675
Pojawia się w:
Polityka Energetyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dimensioning the approach to the Liquefied Natural Gas terminal in Świnoujście using analytical and simulation methods
Autorzy:
Anczykowska, A.
Ślączka, W.
Powiązania:
https://bibliotekanauki.pl/articles/906044.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
method of Three Components
Panama Canal Method
Canadian Method
method of INM
PIANC method
simulation method
dimensioning of fairways
LNG
LNG terminal in Świnoujście
Opis:
This article presents a comparison between the use of analytical methods and simulations for dimensioning the approach to the liquefied natural gas (LNG) terminal in Świnoujście. Parameters of rectilinear sections of the fairway were obtained by analytical methods, widely used in traffic engineering. These methods are: the method of the Three Components, the Panama Canal method, the Canadian method, the method of the INM and the PIANC method. Dimensioning the approaching fairway to the LNG terminal in Świnoujście was conducted for two types of LNG tankers: Q-flex and Q-max. Results for simulation methods were obtained using a navigational bridge simulator. Results obtained using analytical and simulation methods allowed the comparison of parameters of the approach to the LND terminal in Świnoujście, and an indication of the optimal dimensioning methods of a fairway’s straight sections.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 101-107
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applications of bootstrap and resampling methods in empirical Bayes estimation of reliability parameters
Autorzy:
Grabski, F.
Załęska-Fornal, A.
Powiązania:
https://bibliotekanauki.pl/articles/2069560.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
bootstrap method
method
estimate
bootstrap replicates
Opis:
Bootstrap and resampling methods are the computer methods used in applied statistics. It is a type of Monte Carlo method based on observed data. Bradley Efron described it in 1979 and he has written a lot about the method and its generalizations since then. Here we apply these methods in an empirical Bayes estimation using bootstrap or resampling copies of the data to obtain an empirical prior distribution.
Źródło:
Journal of Polish Safety and Reliability Association; 2008, 1; 117--121
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of selected contact algorithms types in terms of their parameters selection
Autorzy:
Panowicz, R.
Powiązania:
https://bibliotekanauki.pl/articles/245114.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
finite element method
contact
penalty method
Opis:
The analysis of many engineering problems involves not only deformation of the considered system, but occurrence of the interaction between the individual separate elements of the system as well. The occurrence of friction is the most common phenomenon occurring during this interaction. In the case of intense friction, the heat released in this process is also important. In computer methods of mechanics, the process of interaction between bodies is carried out using special algorithms. The most frequently applied are: the penalty method, the barrier method, direct elimination of constraints, the Lagrange multiplier method, the perturbed Lagrangian method, the augmented Lagrangian method, Nitsche method. Owing to its easy implementation process, an approach based on a penalty function is often applied. In this approach, the contact between the bodies can be identified with the presence of the spring between the elements of the bodies in the contact. The stiffness of the spring depends on: material bulk modulus, face area, volume or shell diagonal and a numerically selected scale factor. The article will present the results of analyses that will allow fast and easy selection of its value. In the analyses there were presented the results considering the basic types of contacts: node to surface, surface to surface and surface to surface mortar.
Źródło:
Journal of KONES; 2013, 20, 1; 263-268
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Collocation method based on barycentric interpolation iteration for analysis of nonlinear microbeams
Autorzy:
Zhuang, M.
Miao, C.
Wang, Z.
Powiązania:
https://bibliotekanauki.pl/articles/279890.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
nonlinear microbeams
barycentric Lagrange interpolation
collocation method
linearization method
iteration method
Opis:
A powerful computational methodology, named the barycentric Lagrange interpolation iteration collocation method (BLIICM), for solving nonlinear bending problems of a doubly clamped microbeam under electrostatic loads is presented. The nonlinear governing equation of the microbeam is converted into a linear differential equation by assuming the initial function. The barycentric Lagrange interpolation collocation method (BLICM) is used to solve the linear differential equation. The direct linearization formulations and Newton linearization calculation formulations for the nonlinear differential equation have been given. The calculation method and formulation of the nonlinear integral term have been discussed in details. By applying a barycentric Lagrange interpolation differential matrix, a matrix-vector calculation formula of BLIICM has been established. Numerical results of calculation examples show that the advantages of the proposed methodology are efficient, simple and of high precision.
Źródło:
Journal of Theoretical and Applied Mechanics; 2018, 56, 3; 741-749
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The verification of the multivariate normal distribution hypothesis in a one-sample model with the method of elimination of disturbing parameters
Sprawdzenie hipotezy o wielowymiarowym rozkładzie normalnym w modelu jednej próby metodą eliminacji parametrów zakłócających
Autorzy:
Domański, Czesław
Wagner, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/904630.pdf
Data publikacji:
1997
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
multivariate normality test
randomization method
reduction method
conditional interval probability transformation method
Opis:
In many statistical tasks a necessity of testing multivariate normality arises. In constructing multivariate normality tests there is a necessity of estimating unknown parameters ц and £ from a given sample. The parameters are regarded as disturbing parameters. The paper deals with some methods, by means of which unknown disturbing parameters are eliminated when the multivariate normality tests are applied. In particular, the following methods are stressed: randomization method, reduction methods and conditional interval probability transformation method.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 1997, 141
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of the Effect of Chinese Confucian Ideas on Korean Youth Education and Culture and Teaching Method – Based on the Data of University Students
Autorzy:
Moon, Hyoung-Jin
Nam, Jong-ho
Powiązania:
https://bibliotekanauki.pl/articles/1969064.pdf
Data publikacji:
2018-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
Chinese Confucian ideas
cramming teaching method
mixed teaching method
discussion teaching method
Opis:
This study aims to examine the current status of Chinese Confucian ideas that have affected Korean youth culture and to draw up more effective education methods. A survey was conducted after teaching three different groups with the use of three teaching methods over two weeks. Before the experiment, Korean teenagers had preferred different teaching methods depending on their origins. However, after learning from the three teaching methods (cramming, mixed, and discussion teaching methods) for two weeks, the participants preferred the discussion method. Thus, the survey found that while Chinese Confucian ideas have a great influence on Korean youth, there is a possibility for change in preferred teaching methods.
Źródło:
The New Educational Review; 2018, 54; 51-61
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Direct method of hierarchical nonlinear optimization - reassessment after 30 years
Autorzy:
Karbowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/308864.pdf
Data publikacji:
2004
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
hierarchical optimization
decomposition
direct method
Benders method
cutting plane method
distributed computations
Opis:
We consider the optimization problems which may be solved by the direct decomposition method. It is possible when the performance index is a monotone function of other performance indices, which depend on two subsets of decision variables: an individual for every inner performance index and a common one for all. Such problems may be treated as a generalization of separable problems with the additive cost and constraints functions. In the paper both the underlying theory and the basic numerical techniques are presented and compared. A special attention is paid to the guarantees of convergence in different classes of problems and to the effectiveness of calculations.
Źródło:
Journal of Telecommunications and Information Technology; 2004, 3; 3-11
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of magnetic field effect on ferromagnetic spheres embedded in elastomer pattern
Badanie wpływu pola magnetycznego na ferromagnetyczne kule w osnowie elastomerowej
Autorzy:
Boczkowska, A.
Czechowski, L.
Jaroniek, M.
Niezgoda, T.
Powiązania:
https://bibliotekanauki.pl/articles/280005.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
magnetorheological elastomers
finite element method
photoelastic method
Opis:
The results of modelling of the magnetorheological elastomers (MREs) microstructure using Finite Elements Method (FEM) are shown. MREs are solids analogous to magnetorheological fluids consisting of carbonyl-iron particles and a soft elastomer matrix. Fabrication of MREs is performed in an external constant magnetic field. Due to the presence of this field, the ferromagnetic particles tend to arrange themselves into elongated chains according to the magnetic field lines. FEM analysis of the MREs microstructure takes into account two cases: magnetic power and elastic vectors as well as their interactions between the components of the composite. The paper describes spatial ordering of the particles based on their interactions with the magnetic field. Two phenomena were taken into account: the force of a magnetic field and the local magnetic dipoles. Both fields have been modelled for a circular conductor with electrical current.
W pracy przedstawiono wyniki modelowania mikrostruktury magnetoreologicznych elastomerów (MRE) z wykorzystaniem metody elementów skończonych (MES). MRE są odpowiednikami w stanie stałym cieczy magnetoreologicznych, złożonymi z cząstek żelaza karbonylkowego i miękkiej osnowy elastomerowej.Wytwarzanie MRE prowadzone jest w stałym polu magnetycznym. Pod wpływem pola cząstki ferromagnetyczne układają się w łańcuchy wzdłuż linii pola magnetycznego, tworząc strukturę kolumnową. W analizie MES mikrostruktury MRE rozpatrzono siły magnetyczne i sprężystości oraz ich wzajemne oddziaływania pomiędzy składnikami kompozytu. Przedstawiono przestrzenne rozmieszczenie cząstek w oparciu o ich oddziaływania w polu magnetycznym. W rozważaniach wzięto pod uwagę rozkład pola magnetycznego i momenty dipolowe cząstek. W obu przypadkach pole było zamodelowane dla kołowego przewodnika prądu elektrycznego.
Źródło:
Journal of Theoretical and Applied Mechanics; 2010, 48, 3; 659-676
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the influence of the finite elements mesh density on the determined shaped charge jet parameters
Autorzy:
Panowicz, R.
Konarzewski, M.
Borkowski, J.
Milewski, E.
Powiązania:
https://bibliotekanauki.pl/articles/244994.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
charge jet
finite element method
Euler method
Opis:
Article presents results of numerical analyses of the finite elements mesh density influence on the shaped charge jet stream formation process and its selected parameters. Authors considered classical shaped charge, which consists of the plastic explosive material, copper liner and aluminium case. To properly described, material properties of the liner and case of the shaped charge, the Johnson-Cook material model was used. Detonation process was described using burn model approach. Behaviour of the detonation process products was described by commonly used John-Wilkins-Lee equation of state. Due to the nature of the presented phenomenon, in which we are dealing with large strains and strain rates, for its modelling authors utilized Euler description, implemented in the LS-Dyna software. In these method material flows by the finite elements and mesh is not deformed. Such approach allows for modelling phenomena where large and very large deformations occur. Unfortunately, it can result in a destabilizing of the systems energy balance. In order to minimize dissipation processes, in calculations was used second order scheme because of the spatial variables and time. Analyses were performed in axially symmetric setup, which was possible due to the symmetry of the analysed system. Influence of the finite elements size on the process of jet stream formation and its selected parameters was analysed.
Źródło:
Journal of KONES; 2015, 22, 3; 329-335
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bootstrap methods for the censored data in empirical Bayes estimation of the reliability parameters
Autorzy:
Grabski, F.
Załęska-Fornal, A.
Powiązania:
https://bibliotekanauki.pl/articles/2069692.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
bootstrap method
resampling method
estimate
bootstrap replicates
Opis:
Bootstrap and resampling methods are the computer methods used in applied statistics. They are types of the Monte Carlo method based on the observed data. Bradley Efron described the bootstrap method in 1979 and he has written a lot about it and its generalizations since then. Here we apply these methods in an empirical Bayes estimation using bootstrap copies of the censored data to obtain an empirical prior distribution.
Źródło:
Journal of Polish Safety and Reliability Association; 2009, 1; 107--112
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The critical path method in estimating project duration
Autorzy:
Nafkha, R.
Wiliński, A.
Powiązania:
https://bibliotekanauki.pl/articles/94943.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
critical path method
CPM algorithm
PERT method
Opis:
Undoubtedly, the most important criterion for assessing any project success is to achieve the planned main objective within scheduled time, under the assumed costs and corresponding to established project quality parameters. The article presents critical path method, that aims to determine project schedule which ensure an implementation shortest time. Ultimately, however the optimal project duration is designated after solving human resource deficiencies or conflicts occurring in the generated schedule.
Źródło:
Information Systems in Management; 2016, 5, 1; 78-87
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibroacoustic diagnostics of transformers in a transient state with reduced influence of magnetostriction phenomenon
Autorzy:
Kornatowski, E.
Powiązania:
https://bibliotekanauki.pl/articles/97533.pdf
Data publikacji:
2013
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
transformer
winding
Vibroacoustic Method
Spectral Subtraction Method
Opis:
In the paper a vibroacoustic method of diagnostics of the mechanical state of an active part of a transformer is presented. The analysis is performed on the signal of bank vibrations in a transient stage of work of an unloaded transformer - during the first few seconds after connecting to the power supply. The method is based on SSM algorithm (Spectral Subtraction Method) reducing the ‘disturbing’ impact of magnetostriction phenomenon on the measurement. It was concluded that using, in the process of diagnostics of an active part of a transformer unit, only the vibroacoustic method does not provide certain conclusions. Experimental research proved high usefulness of the presented V-SSM method (Vibroacoustic Spectral Subtraction Method) when accompanied by FRA method (Frequency Response Analysis) in winding defect diagnostics.
Źródło:
Computer Applications in Electrical Engineering; 2013, 11; 241-251
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multicriteria analysis in planning roads – Part 1. Criteria in determining the alignment of regional roads
Autorzy:
Żabicki, P.
Gardziejczyk, W.
Powiązania:
https://bibliotekanauki.pl/articles/200433.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
criteria
Delphi method
CAWI method
entry list
Opis:
The article presents the criteria taken into account in determining the alignment of regional roads, with particular reference to bypasses of towns located along regional roads. To determine the criteria for the evaluation of variants and their hierarchy, the surveys were conducted using the Delphi method in two rounds, with electronic surveys (the CAWI method). Based on survey studies, an entry list of criteria was set up as a proposal for determining the alignment of regional roads.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 2; 345-350
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fast algorithms for calculations of viscous incompressible flows using the artificial compressibility method
Autorzy:
Kosma, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1943234.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska
Tematy:
Navier-Stokes equation
velocity correction method
method of lines
two grids method
Opis:
The velocity correction method is designed to simulate stationary and non-stationary, two- and three-dimensional motions of a viscous incompressible fluid. The basic assumption of this method consists in splitting the velocity and the pressure fields and calculations are performed in two steps. In the first step, a tentative velocity field is determined by simplified equations for momentum conservation. In the second step the Neumann problem for the Poisson equations is solved to obtain the computational pressure, and the velocity components are corrected. A standard method of lines approach and the two grids method are applied in this contribution. Some test calculations for laminar and transitional flows in square and cubic cavities with one moving wall as well as in a backward-facing step are reported.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2008, 12, 3-4; 273-287
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of bacterial adhesion to metal surfaces with different chemical composition - evaluation of different methods
Autorzy:
Żywicka, A.
Fijałkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/363248.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
bacterial adhesion
metals
direct method
indirect method
Opis:
In the current study attention has been focused on the evaluation of different methods of measurement of bacterial adhesion to the metal surfaces with different chemical composition. The direct methods, which included determination of the number of bacterial cells using fluorescence microscopy and Colony Forming Units (CFU) on agar medium, and indirect methods using Alamar Blue (AB) and MTT assays, were evaluated. The chemical compositions of the metal surfaces included: copper, iron, chromium and nickel. Interaction effects of assay and metal compound have been specifically demonstrated in this study. It was found that metal ions reacted with components of the indirect colorimetric tests used in his study (AB and MTT assay). Consequently, those tests gave positive false results. In contrast to the indirect methods, direct counting methods such as microscopy techniques and CFU counting, were successfully applied for evaluation of bacterial adhesion to the metal surfaces. However, considering the limits for the surfaces of the examined samples for microscopy, the determination of the CFU was found to be the best method for testing the adhesion to metal surfaces. The method, combined with the appropriate detachment procedures allowed for a precise determination of the number of bacteria on the entire surface of the evaluated metal samples.
Źródło:
Environmental Biotechnology; 2017, 13, 2; 14-22
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of Bias and Variance of Sample Median by Jacknife and Bootstrap Methods
Estymacja obciążenia i wariancji mediany z próby metodami jackknife i bootstrap
Autorzy:
Pruska, Krystyna
Powiązania:
https://bibliotekanauki.pl/articles/906894.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
jackknife method
bootstrap method
Monte Carlo methods
Opis:
In the paper the estimation of sample median bias and variance by jackknife and bootstrap methods are considered. Monte Carlo analysis of properties of estimators is presented (mean of bias and mean of variance for some groups of experiments). Sensitivity of distribution of sample median to changes of the sample size is investigated.
W pracy przedstawione są wyniki, przeprowadzonej przez autora, analizy Monte Carlo własności estymatorów typu jackknife i bootstrap mediany z próby z uwzględnieniem wpływu liczebności próby.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2007, 206
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computing Reverberation Time in a 3D Room Model Using a Finite Difference Method Applied for the Diffusion Equation
Autorzy:
Kraszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/177730.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
diffusion method
reverberation time
finite differences method
Opis:
The article presents theoretical values of reverberation times calculated on the basis of the diffusion equation for three room models: flat, cubic, and long. The article shows that not only the average absorp- tion coefficient, but also location of the absorbent material, as well as the place where the time is counted have an impact on the reverberation time, calculated on the basis of the diffusion equation. Despite that, the diffusion model is based on statistical assumptions. The primary goal of the article was to show that the model has geometrical features.
Źródło:
Archives of Acoustics; 2012, 37, 2; 171-180
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A primal-dual integral method in global optimization
Autorzy:
Hichert, Jens
Hoffmann, Armin
Phú, Huan
Reinhardt, Rüdiger
Powiązania:
https://bibliotekanauki.pl/articles/729363.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
global optimization
integral method
Monte Carlo method
primal dual algorithm
level set method
Opis:
Using the Fenchel conjugate $F^c$ of Phú's Volume function F of a given essentially bounded measurable function f defined on the bounded box D ⊂ Rⁿ, the integral method of Chew and Zheng for global optimization is modified to a superlinearly convergent method with respect to the level sequence. Numerical results are given for low dimensional functions with a strict global essential supremum.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2000, 20, 2; 257-278
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
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