Template-Type: ReDIF-Article 1.0 Author-Name: Sangeeta Bhanja Chaudhuri Author-X-Name-First: Sangeeta Bhanja Author-X-Name-Last: Chaudhuri Author-Name: Manoj Majhi Author-X-Name-First: Manoj Author-X-Name-Last: Majhi Author-Name: Sougata Karmakar Author-X-Name-First: Sougata Author-X-Name-Last: Karmakar Title: A scoping review on role of communication media for effective OSH awareness and training Abstract: Communication Media (CM) play a significant role in OSH awareness and training for employees of organisations. As there is no guideline for selecting appropriate CM in a given context, the superiority of a particular CM over another for any specific OSH-AT program is solely judged by the individual's conscience and experience. Hence, the present review aimed to portray the advantages and disadvantages of different CM, their role in effective OSH awareness/training, and factors that determine the advantage of one CM over others in a specific scenario. The article highlights the research lacunae pertaining to the domain of CM's role in effective OSH based on available information in peer-reviewed published articles searched from 'Web of Science', 'Scopus' and 'Google Scholar' following the PRISMA-ScR model for review. The current review is expected to motivate and assist the OSH professionals in selecting an appropriate CM for delivering successful OSH awareness and training. Journal: Int. J. of Reliability and Safety Pages: 1-17 Issue: 1/2 Volume: 15 Year: 2021 Keywords: effective training; occupational safety and health; awareness program; communication media; OSH professional; static and dynamic media; multimedia. File-URL: http://www.inderscience.com/link.php?id=119641 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijrsaf:v:15:y:2021:i:1/2:p:1-17 Template-Type: ReDIF-Article 1.0 Author-Name: Brahim Lafifi Author-X-Name-First: Brahim Author-X-Name-Last: Lafifi Author-Name: Ammar Rouaiguia Author-X-Name-First: Ammar Author-X-Name-Last: Rouaiguia Title: Investigation of reliability analysis of shallow foundation by combining Hasofer-Lind index, response surface methodology and multi-objective genetic algorithm Abstract: This paper presents a reliability analysis of a shallow foundation solicited by a central vertical loading, using the classical limit equilibrium theory and the Hasofer-Lind reliability approach. A deterministic model represented by the Meyerhof equations and Holtz formula is used to compute the ultimate bearing capacity and the settlement of the foundation. The concepts of design of experiments and Response Surface Method (RSM) can be used for the evaluation of the performance functions by generating the approximate polynomials equations. In this study, unit weight, cohesion and friction angle of soil were considered as random variables for the bearing capacity, whereas, Young's modulus and Poisson ratio for the settlement. From the obtained results in terms of reliability index and design points, it is important to notice that the adopted method showed a satisfactory concordance with the author's methods applicable in the reliability problems. Journal: Int. J. of Reliability and Safety Pages: 18-36 Issue: 1/2 Volume: 15 Year: 2021 Keywords: reliability analysis; shallow foundation; RSM; optimisation; genetic algorithm. File-URL: http://www.inderscience.com/link.php?id=119642 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijrsaf:v:15:y:2021:i:1/2:p:18-36 Template-Type: ReDIF-Article 1.0 Author-Name: Ke Yin Author-X-Name-First: Ke Author-X-Name-Last: Yin Author-Name: Haiyun Zhou Author-X-Name-First: Haiyun Author-X-Name-Last: Zhou Author-Name: Jimin Chen Author-X-Name-First: Jimin Author-X-Name-Last: Chen Author-Name: Chen Zhao Author-X-Name-First: Chen Author-X-Name-Last: Zhao Title: An approach to the application of the Dempster-Shafer theory in the megacity community security risk assessment Abstract: Through the study of community security risks in a megacity by the application of the Dempster-Shafer theory, this paper develops an indicator system for the assessment of urban community security based on a combined array of both static and dynamic factors including natural disasters, man-made hazards, community administration and security support. A proper model was thereafter constructed in order to better solve the problems such as content inadequacy, insufficient indicators, model inaccuracy and other problems which are frequently brought forward in the former assessments made by others upon the static and dynamic factors, and then the model was applied in a case study of a megacity. The findings show that more effective improvements have been made by using the newly constructed model in the urban community security risk management. Journal: Int. J. of Reliability and Safety Pages: 37-50 Issue: 1/2 Volume: 15 Year: 2021 Keywords: risk assessment; modern community security; megacities; Dempster-Shafer theory. File-URL: http://www.inderscience.com/link.php?id=119643 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijrsaf:v:15:y:2021:i:1/2:p:37-50 Template-Type: ReDIF-Article 1.0 Author-Name: Arman Alimardani Author-X-Name-First: Arman Author-X-Name-Last: Alimardani Author-Name: Reza Dashti Author-X-Name-First: Reza Author-X-Name-Last: Dashti Title: Optimal allocation of the outage centres in an electrical distribution system: the strategic method for utilities in order to improve power system reliability and reduce customer service outage cost Abstract: In this paper, 'outage centre' has been defined as the building where repair crew are dispatched from to the failure location in order to restore power. This paper has proposed a practical model of optimal allocation of the outage centres to minimise outages cost and improve system reliability simultaneously. The stepwise approach to obtain the optimum site of the outage centre in a 'work location' has been presented. Finally, the implementation of the proposed model is discussed in a sample network which consists of 81 buses. Analysis of the indices sensitivity to parameters has been also carried out and discussed. Journal: Int. J. of Reliability and Safety Pages: 51-67 Issue: 1/2 Volume: 15 Year: 2021 Keywords: optimal allocation of the outage centre; travel time; electricity distribution company. File-URL: http://www.inderscience.com/link.php?id=119644 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijrsaf:v:15:y:2021:i:1/2:p:51-67 Template-Type: ReDIF-Article 1.0 Author-Name: Praveen Kumar Poonia Author-X-Name-First: Praveen Kumar Author-X-Name-Last: Poonia Title: Performance assessment of a multi-state computer network system in series configuration using copula repair Abstract: The analysis of various reliability measures of a computer network system comprising two load balancers (LB), five web servers (WB), and three database replica servers (DBRS) as a series parallel system with four subsystems working under k-out-of-n methodology is described in this paper. Failure rates of LB/WB/DBRS in all the subsystems are constant and follow exponential distribution, whereas the repair follows two kinds of distributions namely general and copula distribution. Using transition diagram, first-order partial differential equations are developed and solved using supplementary variable techniques and copula modus-operandi. The objective of the paper is to find main reliability indexes such as availability of the system, reliability of the system, mean time to failure and expected profit. The results are shown in tables and graphs through which we establish the effect of failure rate and repair rate on reliability physiognomies. Lastly, the analysis of results indicates that copula repair is more effective in availability and expected profit analysis. Journal: Int. J. of Reliability and Safety Pages: 68-88 Issue: 1/2 Volume: 15 Year: 2021 Keywords: computer network; load balancer; reliability; catastrophic failure; Gumbel-Hougaard family copula distribution. File-URL: http://www.inderscience.com/link.php?id=119645 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijrsaf:v:15:y:2021:i:1/2:p:68-88 Template-Type: ReDIF-Article 1.0 Author-Name: Ashutosh Mishra Author-X-Name-First: Ashutosh Author-X-Name-Last: Mishra Author-Name: Meenu Singla Author-X-Name-First: Meenu Author-X-Name-Last: Singla Title: Generalised rule induction-based model for software fault prediction Abstract: Software fault predictions have great importance during maintenance and evolution of softwares. To upgrade the quality of the software, it is necessary to predict the faulty software modules. Previous research investigated was mainly focused on the binary classification of software class modules using different fault prediction techniques. However, much less work was done on the prediction of the number of faults. In this study, a descriptive technique called as Generalised Rule Induction (GRI) associations rule mining is proposed to identify the number of faults in the faulty class module. The proposed technique is implemented for five releases of open source Apache Ant project which is taken from PROMISE repository. The results show that the generated rules for the class modules containing single fault achieves better accuracy with fewer rules. Journal: Int. J. of Reliability and Safety Pages: 89-103 Issue: 1/2 Volume: 15 Year: 2021 Keywords: software fault prediction; dependent variable; independent variable; clustering; association rule mining. File-URL: http://www.inderscience.com/link.php?id=119646 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijrsaf:v:15:y:2021:i:1/2:p:89-103 Template-Type: ReDIF-Article 1.0 Author-Name: P. Vijaya Laxmi Author-X-Name-First: P. Vijaya Author-X-Name-Last: Laxmi Author-Name: E. Girija Bhavani Author-X-Name-First: E. Girija Author-X-Name-Last: Bhavani Title: A repairable second optional service queueing system with warm and cold standbys Abstract: Throughout this paper, efforts are being made to analyse the availability of the second optional service queueing system with two kinds of servers on hold. One is warm-standby and the other is cold-standby. First essential service (FES) is provided to all arriving customers and only some of them may further demand second optional service (SOS). Both operating and standby servers provide FES and SOS to customers. Replacing the warm-standby server with the failed main operating server may not be successful. Each time an operating server or a warm-standby server fails, it is quickly sent to a repair facility. The combined approach for two models is presented through the indicator function. We derive the steady-state solution of the model using matrix geometric method. The numerical results are shown in which several features of the system are evaluated for both models. A cost model is developed to determine the optimal service rates during the first essential and second optional services using particle swarm optimisation. Journal: Int. J. of Reliability and Safety Pages: 104-122 Issue: 1/2 Volume: 15 Year: 2021 Keywords: queue; standby server; first essential service; second optional service; server breakdown; server repair; warm-standby; cold-standby; matrix-geometric method; particle swarm optimisation. File-URL: http://www.inderscience.com/link.php?id=119647 File-Format: text/html File-Restriction: Access to full text is restricted to subscribers. Handle: RePEc:ids:ijrsaf:v:15:y:2021:i:1/2:p:104-122