Informacja

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

Wyszukujesz frazę "simulation study" wg kryterium: Temat


Tytuł:
Wykorzystanie symulacji jako narzędzia wspomagającego proces oceny efektywności produkcji w przedsiębiorstwach produkcyjnych
Simulation as a tool supporting the production efficiency evaluation
Autorzy:
Koliński, Adam
Śliwczyński, Bogusław
Golińska-Dawson, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/426343.pdf
Data publikacji:
2018
Wydawca:
Szkoła Główna Handlowa w Warszawie
Tematy:
simulation of manufacturing processes
production efficiency
case study
Opis:
The information flow, from which managers can make decent decisions, requires the use of e-economy tools and enterprise support planning systems. Simulations as a tool of e-economy become increasingly popular in business practice nowadays. In this paper, the authors focus on presenting how the simulations were used to verify the developed model of evaluating production efficiency. Using a case study method, they describe the verification process, which depicts the specificity of the production process, on the example of serial production, which is the most representative in business practice. The main aim of the article is to present the informatization method of the evaluation model and the simulation as a tool supporting the decision-making process at the operational level.
Źródło:
e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie; 2018, 3 (75); 80-90
1731-6758
1731-7428
Pojawia się w:
e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wirtualny model przekładni różnicowej
Virtual model of the differential
Autorzy:
Szumski, M.
Budniak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/315487.pdf
Data publikacji:
2015
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
CAD
CAM
przekładnia różnicowa
dyferencjał
symulacja kinematyczna
analiza ruchu
differential
transmission
simulation of kinematics
study motion
Opis:
W artykule przedstawiono możliwości wykorzystania systemów do komputerowego wspomagania projektowania CAD i obliczeń inżynierskich CAE. Możliwości te zaprezentowano na przykładzie wirtualnego modelu przekładni różnicowej. Głównym celem było zamodelowanie poszczególnych części i złożenia oraz przeprowadzenie analizy ruchu w systemie CAE dla przekładni różnicowej w różnych warunkach pracy.
The paper presents the possibilities of using the system for computer-aided design and computer aided engineering. Capabilities of this system were presented on the example of a virtual model of the differential. The main objective was to model all parts of mechanism, their submission and to analyze the motion of the system in different circumstances of work.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2015, 16, 6; 228-232
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wieloagentowy model symulacyjny rozprzestrzeniania się epidemii
Multiagent simulation model of epidemy spread
Autorzy:
Netczuk, A.
Nowicki, T.
Pierzchała, T.
Powiązania:
https://bibliotekanauki.pl/articles/403979.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Symulacji Komputerowej
Tematy:
epidemia chorób przenoszonych drogą pokarmową
symulator epidemii
badanie własności procesów epidemii
symulacja wieloagentowa
food-borne diseases epidemy
epidemy simulator
study of properties of epidemy processes
multi-agent simulation
Opis:
W pracy przedstawiono wieloagentowy symulator programowy rozwoju epidemii chorób przenoszonych drogą pokarmową. Jest to dyskretno-zdarzeniowy model rozprzestrzeniania się oraz przeciwdziałania epidemii. Główną uwagę skupiono na analizie rozpatrywanej populacji ludzi w ustalonym regionie, łańcuchu dystrybucji żywności oraz działaniu służb przeciwdziałania epidemii. Pokazano sposób uzyskiwania podstawowych charakterystyk epidemii. Przeanalizowano własności symulatora wieloagentowego.
The paper presents multiagent software simulator connected with food-borne diseases epidemy. It is a discrete-event model of epidemy spread with preventive activities. The main attentions focused on the analysis of given human population in a fixed region, the chain of food distribution and preventive activities. It shows how to obtain characteristics of the epidemy. Properties of multi-agent simulator are obtained and analyzed.
Źródło:
Symulacja w Badaniach i Rozwoju; 2015, 6, 2; 125-135
2081-6154
Pojawia się w:
Symulacja w Badaniach i Rozwoju
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The errors-in-variable model in the optimal portfolio construction
Autorzy:
Czapkiewicz, A.
Machowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/375915.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
maximum likelihood method
errors-in-variables model
portfolio
simulation study
Opis:
In the paper we consider a modification of Sharpe's method used in classical portfolio analysis for optimal portfolio building. The conventional theory assumes there is a linear relationship between asset's return and market portfolio return, while the influence of all the other factors is not included. We propose not to neglect them any more, but include them into a model. Since the factors in question are often hard to measure or even characterize, we treat them as a disturbances on random variables used by classical Sharpe's method. The key idea of the paper is the modification of the classical approach by application of the errors-in-variable model. We assume that both independent (market portfolio return) as well as dependent (given asset's return) variables are randomly distributed values related with each other by linear relationship and we build the model used for parameters' estimation. To verify the model, we performed an analysis based on archival data from Warsaw Stock Exchange. The results are also included.
Źródło:
Decision Making in Manufacturing and Services; 2007, 1, 1-2; 49-57
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Cost Efficiency of Sampling Designs
Autorzy:
Liberts, Mārtiņš
Powiązania:
https://bibliotekanauki.pl/articles/466071.pdf
Data publikacji:
2013
Wydawca:
Główny Urząd Statystyczny
Tematy:
cost efficiency
simulation study
survey cost estimation
survey methodology
variance of estimators
Opis:
The aim of a sample survey is to obtain high quality estimates of population parameters with low cost. The expected precision of estimates and the expected data collection cost are usually unknown making the choice of sampling design a complicated task. Analytical methods can not be used often because of the complexity of the sampling design or data collection process. The aim of this paper is to develop a mathematical framework to compare chosen sampling designs with respect to the expected precision of estimates and the data collection cost. As a result a framework is developed which employs artificial population data generation, survey sampling techniques, survey cost modelling, Monte Carlo simulation experiments and other techniques. The framework is applied to analyse the cost efficiency of the sampling design currently used for the Latvian Labour Force Survey.
Źródło:
Statistics in Transition new series; 2013, 14, 1; 7-30
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sposób wykorzystania narzędzi symulacji komputerowej w ograniczaniu hałasu w budynkach wielopiętrowych
Way of using of computer simulation software for noise abatement in multi storey buildings
Autorzy:
Komoniewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/113343.pdf
Data publikacji:
2014
Wydawca:
STE GROUP
Tematy:
ograniczenie hałasu
symulacja komputerowa
budynki wielokondygnacyjne
studium przypadku
noise abatement
computer simulation
multi-storey buildings
case study
Opis:
W artykule przedstawiono sposób przeprowadzenia symulacji komputerowej dla potrzeb oceny narażenia na hałas budynków wielopiętrowych. Założono, że analiza pola akustycznego m in. rozkładu poziomu dźwięku A na zewnętrznych elewacjach budynków wielopiętrowych stanowi podstawę do wspomagania procesu wyboru optymalnego rozwiązania redukcji hałasu, uwzględniającego takie elementy jak wysokość budynku, jego położenie względem źródła/źródeł hałasu czy wpływ otoczenia. Na podstawie studium przypadku zaprezentowano poszczególne etapy badań począwszy od identyfikacji obiektu i źródeł hałasu, poprzez tworzenie modelu geometrycznego, dobór metod obliczeniowych, do wygenerowania wariantów (koncepcji) rozwiązań redukujących hałas na elewacji/elewacjach budynku, ich oceny i wyboru najlepszego rozwiązania.
This article presents way of using of computer simulation software for needs of noise exposure assessment of multi storey buildings. It was assumed that the analysis of the acoustic field at the external facades of multi-storey buildings is the basis for supporting the process of selecting the optimal noise control solutions. Based on the case study various stages of research from identifying the object and the noise sources, by creating a geometric model, selection of computational methods to generate variants solutions for noise abatement at the facades of buildings are presented.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2014, 2 (8); 112-122
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Smart system to coordination of the available response resources in an oil spill leakage
Autorzy:
Panaitescu, M.
Panaitescu, F. V.
Powiązania:
https://bibliotekanauki.pl/articles/116323.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
oil spill
oil spill leakage
oil spill response
response to pollution
mathematical model
marine pollution
response resources
applying simulation study
Opis:
A smart solution for assessing the consequences of pollution on the coast, on flora and fauna but also by accounting for the total costs of the equipment used in the response to pollution is a system for assessing, coordinating and simulating the risk situation with the help of a mathematical model implemented on a simulator. The mathematical model for the simulation of the event of pollution is the latest generation and take into account all the meteorological factors of the sea and air, as well as all the physico-chemical parameters of the substances involved (dispersion, surface tension). The simulator is used for the realistic modeling of a crisis situation and it is useful for both marine officers and emergency situation officials. The simulator will be used as an educational instrument enabling the interactive study of the different emergency situations. In this paper we present the simulation of incident and the creation of response resources. The scenario incident is for KAPTAN M cruise ship that left the tourist port of TOMIS Constanta, Romania, having on board 20 passengers and a number of 15 crew members, and which collided with the oil ship EVIA Oil FIVE, having on board the quantity of 4200 MT crude oil. As a result of the collision, the passenger ship suffered a breach (water hole), on the starboard board, breach by which the ship began to ambarce sea water and in the car compartment a fire was produced. Containment and recovery of an oil spill during the exercise will be simulated through activation and control of response resources. The resources involved in the operations are divided into: platforms, equipment and personnel. The results of simulation is the list of response resources specified in the scenario together with their parameters, which can be exported into a text file. With this simulation tools you can efficiently appreciate the cost of resources in due time, avoiding material and human damage.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 1; 205-212
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconstructing a Marine Casualty: The Effectiveness of the Full-Mission Simulator as a Casualty Analysis Tool
Autorzy:
Doyle, E.
Powiązania:
https://bibliotekanauki.pl/articles/117489.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Casualty Analysis Tool
Maritime Casualties
Full Mission Bridge Simulator (FMBS)
Marine Safety Investigation
Collision Case Study
ARPA Simulation
Simulator Reconstruction
Effectiveness of Simulator
Opis:
The primary purpose of a marine casualty investigation is to seek to establish the causal factors of the casualty with a view to learning the hard lessons and avoiding a repetition. The broad questions of an investigation: ""who?, what?, when?, where?, why?, and how?"", all help to uncover the facts. The investigation sequence will cover a diverse range of fact-finding activities, amongst which, as often the case, may be a requirement for “conducting specialised studies”. Following the fact-finding stage the typical investigation progresses to analysis of the facts, reaches conclusions and makes recommendations. Keeping an open mind, to avoid premature conclusions, requires the separation of the fact-finding and analysis phases. But the analysis may well help to identify missing pieces of evidence, or different lines of enquiry that may otherwise have gone undetected. As an effective reconstruction tool, a full-mission bridge simulator offers an opportunity to examine a broad spectrum of environmental conditions and vessel characteristics, as well as equipment failures, human factors and operating procedures. A casualty incident can be reconstructed in a real-time simulated environment, to aid more detailed analysis. Within the usual confines of the legal process, comprehension of nautical ‘black magic’ is greatly simplified for non-mariners, by seeing the simulated casualty incident unfold, in real-time or in selected short-time segments.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 3; 275-279
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ratio estimation of two population means in two-phase stratified random sampling under a scrambled response situation
Autorzy:
Das, Pitambar
Singh, Garib Nath
Bandyopadhyay, Arnab
Powiązania:
https://bibliotekanauki.pl/articles/31342165.pdf
Data publikacji:
2023-12-07
Wydawca:
Główny Urząd Statystyczny
Tematy:
stratified random sampling
scrambled response
auxiliary variable
mean square error
simulation study
Opis:
In this paper, we have described the development of an effective two-phase stratified random sampling estimation procedure in a scrambled response situation. Two different exponential, regression-type estimators were formed separately for different structures of two-phase stratified sampling schemes. We have studied the properties of the suggested strategy. The performance of the proposed strategy has been demonstrated through numerical evidence based on a data set of a natural population and a population generated through simulation studies. Taking into consideration the encouraging findings, suitable recommendations for survey statisticians are prepared for the application of the proposed strategy in real-life conditions.
Źródło:
Statistics in Transition new series; 2023, 24, 5; 45-61
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Productivity Improvement Based on the Theory of Constraint and Eliminate, Combine, Rearrange, Simplify for Chilled Beef Production in Indonesia
Autorzy:
Neisyafitri, Rendayu Jonda
Ongkunaruk, Pornthipa
Ongcunaruk, Wisute
Powiązania:
https://bibliotekanauki.pl/articles/24200492.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
work study
ECRS concept
TOC
line balancing
Monte Carlo simulation
Opis:
This paper aims to enhance the productivity of a chilled beef production line by comparing two techniques; standard time calculation and simulation. The best improvement method was obtained using the work-study principle, a network diagram, and bottleneck identification. Two methods for improvement are proposed based on the ECRS, the Theory of Constraint (TOC), and line balancing concepts. A simulation model is developed to mimic the actual production line. The simulation results are verified, validated, and compared. Some workstations were combined, and the allocation of the workers was arranged. The present production line efficiency was 46.21%, which increased to 67.09% and 79.71% from the suggested methods. It showed that using the standard time calculation gives a different result from the simulation. In summary, the simulation model along with the application of TOC and ECRS, provides accurate information and improves overall productivity.
Źródło:
Management and Production Engineering Review; 2023, 14, 2; 111--123
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the Fuel Saving Operation for Coastal Merchant Ships using Weather Routing
Autorzy:
Takashima, K.
Mezaoui, B.
Shoji, R.
Powiązania:
https://bibliotekanauki.pl/articles/116404.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Weather Routing
route planning
Weather Navigation
Coastal Merchant Ship
Fuel Saving Operation
Dijkstra’s Algorithm
Simulation Study
Fuel Consumption
Opis:
It is well known that Weather Routing is one of the effective ship operation methods to reduce fuel consumption and many studies have been conducted to develop the effective calculation methods. However, most studies were performed focusing on the ocean going ships, and there were few studies made for coastal ships. The authors propose a minimum fuel route calculation method for coastal ships that use the precise forecasted environmental data and the propulsion performance data of the ship on actual seas. In the proposed method, we use the Dijkstra’s algorithm to calculate an optimum minimum fuel route suitable for coastal ships. Simulation study was carried out to evaluate the effectiveness of the proposed method using two coastal ships. As the result of study, the authors confirmed that the proposed calculation method is effective for fuel consumption reduction and is applicable for the operation of coastal merchant ships.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 4; 401-406
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On estimation of parameters in the bivariate linear errors-in-variables model
Autorzy:
Czapkiewicz, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1338894.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
regression line
variance component
simulation study
maximum likelihood method
estimator
replication model
Opis:
We discuss some methods of estimation in bivariate errors-in-variables linear models. We also suggest a method of constructing consistent estimators in the case when the error disturbances have the normal distribution with unknown parameters. It is based on the theory of estimating variance components in linear models. A simulation study is presented which compares this estimator with the maximum likelihood one.
Źródło:
Applicationes Mathematicae; 1998-1999, 25, 4; 401-410
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odd log-logistic generalised Lindley distribution with properties and applications
Autorzy:
Ranjbar, Vahid
Eftekharian, Abbas
Kharazmi, Omid
Alizadeh, Morad
Powiązania:
https://bibliotekanauki.pl/articles/18707217.pdf
Data publikacji:
2023-09-08
Wydawca:
Główny Urząd Statystyczny
Tematy:
Lindley distribution
odd log-logistic generalised family
moments
Bayesian analysis
simulation study
Opis:
In this paper, a new three-parameter lifetime model, called the odd log-logistic generalised Lindley distribution, is introduced. Some structural properties of the new distribution including ordinary and incomplete moments, quantile and generating functions and order statistics are obtained. The new density function can be expressed as a linear mixture of exponentiated Lindley densities. Different methods are discussed to estimate the model parameters and a simulation study is carried out to show the performance of the new distribution. The importance and flexibility of the new model are also illustrated empirically by means of two real data sets. Finally, Bayesian analysis and Gibbs sampling are performed based on the two real data sets.
Źródło:
Statistics in Transition new series; 2023, 24, 4; 71-92
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nautical access study based on real time bird’s eye view simulations
Autorzy:
Mansuy, M.
Candries, M.
Eloot, K.
Powiązania:
https://bibliotekanauki.pl/articles/1841571.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
manoeuvring study
ship manoeuvering
ship manoeuvring simulation
Fast Time Simulation (FTS)
Real Time Simulation (RTS)
3D Visualisation
manoeuvring simulator
manoeuvring assessment
Opis:
Real time ship manoeuvring simulations are a valuable source of information in the detailed design phase of nautical studies. The feedback of pilots, which is not available for fast time simulations that are carried out by a computerized autopilot, is an important asset in the evaluation of the feasibility of ship manoeuvres. However, real time simulations are significantly more expensive in that realistic 3D visuals are needed so that the pilot can immerse himself in a sailing environment. Modelling and generating such 3D views is time consuming and requires expensive hardware and special skills. Real time simulations that offer only a 2D bird’s eye view for the execution of manoeuvres by pilots, can sometimes be used as a cheaper and faster alternative. This paper presents a case study that evaluates the nautical access to two harbours and discusses some of the advantages and disadvantages of a real time bird’s eye view setup.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 53-61
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie procesu wytłaczania jednoślimakowego mieszanin polimerów z zastosowaniem ślimaków mieszających i dozowanego zasilania wytłaczarki
Modeling for starve fed single-screw extrusion of polyblends using mixing screws
Autorzy:
Wilczyński, K. J.
Nastaj, A.
Powiązania:
https://bibliotekanauki.pl/articles/947391.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:
single-screw extrusion with starve feeding
mixing screws
PE-LD/PS blend
simulation-experimental study
mieszanina PE-LD/PS
Opis:
Opracowano program symulacji procesu wytłaczania jednoślimakowego z zastosowaniem ślimaków mieszających i dozowanego zasilania. Wykonano badania symulacyjno-doświadczalne wytłaczania mieszaniny PE-LD/PS z wykorzystaniem ślimaka mieszającego z sekcją intensywnego mieszania, utworzoną przez układ pierścieni mieszających. Wykonano obliczenia symulacyjne procesu obejmujące uplastycznianie tworzywa, rozkład ciśnienia tworzywa oraz stopień wypełnienia ślimaka. Wyniki symulacji zweryfikowano doświadczalnie.
Computer program has been developed for starve fed single screw extrusion with mixing screws. Simulation and experimentation for extrusion of PE-LD/PS blend have been performed. Mixing screw equipped with toothed disc mixing section has been applied. Melting of polymer, pressure profiles, and screw filling have been simulated and validated experimentally.
Źródło:
Polimery; 2016, 61, 4; 279-285
0032-2725
Pojawia się w:
Polimery
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