Wyniki wyszukiwania - BazTech

1

Modeling Access to Emergency Medical Service - Monte Carlo Simulation Model in Spreadsheet

Mielczarek B., Zabawa J.

Journal of Applied Computer Science

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2008

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Vol. 16, nr 1

33-48

EN

The paper describes the Monte Carlo simulation model to study the influence of the forecasted demographic and epidemiological changes on the access to emergency medical care. Based on the former research directed towards the application of simulation methodology to study the decision problems in health care systems, the basic assumptions of Monte Carlo model in spreadsheet are presented, the process of conducting credible simulation experiments is described and the analysis of the forecasted trends influence on the access to emergency services is described.

2

State of the art on pedestrian safety simulation

Naddeo A., Annarumma M., Pappalardo M.

Journal of Achievements in Materials and Manufacturing Engineering

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2008

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Vol. 27, nr 1

67-70

EN

Purpose: The aim of this work is to explain the work of Design Methods' research group of Department of Mechanical Engineering of Salerno University, in the field of research regarding vehicles pedestrian safety problem, taking care to finite element methods and models used and developed for vehicle design and optimization. Design/methodology/approach: Our developed models show a very good Numeric/Experimental correlation, and we've numerically certified our virtual impactors, designed following EEVC-WG17 specification. These impactors have been tested also at higher speed and we have obtained a good correlation with some problems because of the critical behavior of the foam solved following different model-design optimization methods. Findings: Best results obtained and explained in this paper are concerning impactors modeling and certification, and Experimental/Numerical correlation of full impact tests. Research limitations/implications: The achievement of the maximum possible pedestrian safety performance, compatibly with the others, sometimes conflicting, performances, is one of the main objectives to reach, for the automotive industry by now and, above all, for the future. Practical implications: According to a surveying by European Community research committee, the risk of die for pedestrians and cyclists because of street incidents is eight/nine times higher than one of the occupants of motor vehicles. From statistics we've found that the greatest part of these accidents is due to the collision of the pedestrian on the front part of motor vehicles, and that fact affects the considerations on the passive safety. Originality/value: The most Important Automotive industries had understood the impact of new regulations about homologation and began to study the problem and particularly how to introduce new Homologation parameters in their Product development cycles, today based on Virtual Prototyping of the Whole Vehicle and final Physical testing of few physical prototypes.

3

State of the art of the passive pedestrian safety simulation

Naddeo A., Annarumma M., Pappalardo M., Cappetti N.

Journal of Achievements in Materials and Manufacturing Engineering

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2008

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Vol. 30, nr 1

51-58

EN

Purpose: In this paper we want to describe the work of Design Method's research group of Dept. of Mechanical Engineering of Salerno University, in the research sector concerning passive pedestrian safety for vehicles, taking into account models FEM used and developed for vehicle design and optimization. Design/methodology/approach: Our carried out models show a very good degree of Numeric/Experimental correlation, and also we've numerically certified our virtual impactors, designed following EEVC-WG17 requirements. These impactors have been tested at higher speed and we have had a good correlation, even if some difficulties there was, regarding the critical behaviour of the foam that covers some impactors, solved following different model-design optimization methods. Findings: Best results obtained and described in this paper are relating to impactors modelling and certification, and Experimental/Numerical correlation of crash tests. Research limitations/implications: The reaching of the elevated pedestrian safety performance, compatibly with the others, sometimes conflicting, performances, is one of the main targets to reach for the automotive industry by now and, above all, for the future. Practical implications: Statistic studies carried out during last decades have underlined as pedestrians-with a prevalence of children and elderly-are a category with great risk of die in car accidents, especially during the collision with the front part of motor vehicles, particularly in the urban areas: according to recent investigations of a research committee of the European Community (CEC 2001), the risk of death in case of accident is, for pedestrians and cyclists, equal respectively to 9 and 8 times vehicle occupants one. Originality/value: In such a context, this paper is intended to study the pedestrian injury at the impact with vehicles and methods of designing and constructing vehicles in order to reduce the damage itself.

4

Discrete-event simulation: methodology and spreadsheet-based implementation

Pecherska J., Merkuryev Y.

Przegląd Elektrotechniczny

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2006

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R. 82, nr 4

49-55

EN

The paper considers a general structure of discrete-event simulation study. It starts with specifying the approach of discrete-event computer-based simulation, then proceeds to discussing the structure and main steps of a simulation study, emphasises the conceptual modelling, and finally gives an example of a spreadsheet-based service system simulation.

PL

Artykuł opisuje ogólną strukturę studium symulacyjnego zdarzeń dyskretnych. Począwszy od specyfikacji podejścia do komputerowej symulacji zdarzeń dyskretnych, poprzez dyskusję struktury i głównych kroków studium symulacyjnego, podkreślając wagę modelowania koncepcyjnego, kończąc na przykładach symulacji systemów usługowych z wykorzystaniem arkusza kalkulacyjnego.