Wyniki wyszukiwania - BazTech

1

Correlation analysis and prevention of electrocution risk factors in the construction industry

Li Jue, Chen Feifei, Li Shije

Archives of Civil Engineering

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2022

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Vol. 68, nr 4

537--554

EN

Electrocution is one of the main causes of workplace deaths in the construction industry. This paper presents a framework for identifying electrocution risk factors and exploring the correlations between them, with the aim of assisting accident prevention research. Specifically, the Haddon Matrix is used to extract the risk factors from 193 investigation reports of electrical shock accidents from 2012-2019, and the Apriori algorithm is applied to examine the potential relationships between these factors. Based on association rules using three criteria: support (S), confidence (C) and lift (L), the betweenness centrality is then introduced to optimize association rules and find the most important rules though comparison. The results show that after optimization, some of these critical rules rise significantly in rank, such as Workplace: indoor → No CPR provided. Through these ranking changes, the focus of safety management is clarified, and finally, based on a comprehensive analysis of association rules, targeted accident prevention measures are suggested.

2

Performance Comparison of Routing Protocols in Opportunistic Networks

Prabha Chander, Kumar Rakesh

Annals of Computer Science and Information Systems

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2020

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Vol. 24

87--90

EN

In today's world doing data transfer in delay tolerant networks (DTN) environment is a challenging task. In DTN nodes are characterized to meet opportunistically to do routing and data transfer. In opportunistic environment no end-to-end path exists between destination and source. The contacts are made opportunistic while coming in contact for a short span of time. All communication is within this span only. Due to this feature the DTN's are sometimes recognized as Opportunistic Networks (ON's). The rules are not predefined here for choosing the next node as applicable in conventional schemes of routing. In this paper the performance of opportunistic routing protocols have been investigated namely PRoPHET, Spray and Wait, SimBet, Bubble Rap in terms of robustness and scalability. The concept of Ant Colony Optimization is used to find optimal routes while doing routing decision. The performance of SimBet and Bubble Rap is better with respect to throughput as they belong to social context aware category of protocols. Performance is evaluated in terms of packet dropped and overhead ratio also. The overhead ratio is better in SimBet and Bubble Rap as compared to Spray and Wait and PRoPHET. Depending on buffer size, speed, contact times these routing strategies shows variable performance. The result indicates that the social aware algorithms have the ability and capacity to exchange/carry information faster and improve the connectivity in ON's.

3

Identyfikacja i pomiar pozycji podmiotów w sieciach organizacyjnych

Barczak B., Cabała P.

Organizacja i Zarządzanie : kwartalnik naukowy

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2014

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nr 3

23--40

EN

The paper presents a method for determining the position of actors in organizational networks using network analysis methods that are called as a method of SNA (Social Network Analysis). The growing popularity of this approach does not only result from the need to use effective tools for the study of new forms of organization, but also with the wider availability of computer programs to help make tedious calculations. The first part of the article presents the main points of network analysis and the concept and measure of centrality. The second part discusses the problem of using network analysis to examine the position of actors in the selected organizational network.

PL

W artykule zaprezentowano sposób określania pozycji podmiotów w sieciach organizacyjnych, z wykorzystaniem metod analizy sieciowej, które w skrócie nazywane są jako metody SNA (Social Network Analysis). Rosnąca popularność tego podejścia wynika obecnie nie tylko z potrzeby wykorzystania efektywnych narzędzi badania nowych form organizacyjnych, lecz także z coraz szerszej dostępności programów komputerowych, ułatwiających dokonywanie żmudnych obliczeń. W pierwszej części artykułu przedstawiono główne założenia analizy sieciowej oraz pojęcie i miary centralności. Druga część przedstawia przykład wykorzystania analizy sieciowej do badania pozycji podmiotów w sieci organizacyjnej (centralności) na przykładzie wybranej sieci.

4

"Serce nie sługa" - przypadek gdański

Awtuch A.

Czasopismo Techniczne. Architektura

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2008

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R. 105, z. 2-A

15-21

PL

Badanie przemieszczania się centrum miasta umożliwia syntaktyka przestrzeni i koncepcja rdzenia integracji. Przemieszczanie się centrum badano tą metodą na przykładzie Gdańska. Obszar rdzenia wyłoniony za pomocą modelu syntaktycznego odpowiada intensywności wynikającej z obecności poruszających się osób. Zjawisko transurbacji rejestruje się zazwyczaj ex post. Możliwe jest jednak modelowanie potencjalnych rozwiązań i testowanie ich wpływu na strukturę miasta z użyciem sprawdzonych metod.

EN

Space syntax and the concept of integration core enables observation of urban centre's transurbation. The shift of centre was investigated using these methods in the case of Gdańsk. Integration core in syntactic models matches the intensity of pedestrian movement. Transurbation is usually observed ex post but it is possible to model potential processes and test their influence on urban structure.