The world economic image has been changing. It has been a long time since the sole important resources of an organization were financial and physical. In the newly-emerged global economy, knowledge and information are accounted as the most significant resources in order to produce value. Obviously, as the demand for knowledge to reach success is increasing day by day, maintenance and enhancemen...

abstract background: technical, human, operational and organizational factors have been influencing the sequence of occupational accidents. among them, organizational factors play a major role in causing occupational accidents. the aim of this research was to understand the iranian safety experts’ experiences and perception of organizational factors. methods: this qualitative study was conducte...

A crucial aspect of safety case management is the ongoing maintenance of the safety argument through life. Throughout the operational life of any system, the corresponding safety case can be challenged by changing regulatory requirements, additional safety evidence and a changing design. In order to maintain an accurate account of the safety of the system, all such challenges must be assessed f...

This paper describes how methods taken from safety-critical practises can be used in development of business-critical software. The emphasis is on the early phases of product development, and on use together with the Rational Unified Process. One important part of the early project phases is to define safety requirements for the system. This means that in addition to satisfying the need for fun...

Background: Today, with the development of technology, the presence and role of human resources has been highlighted in industrial environments. Hence, the importance of safety culture is growing. Mining is the one of the most dangerous occupations. Therefore, this study was performed to determine the effect of health, safety, and environment management system (HSE-MS) on safety climate in one ...

introduction: safety culture is a set of beliefs, norms, incentives, social and technical roles and functions that make the core of the safety management system. the aim of this study was to examine factors affecting safety culture and its relationship to accident in the oil depots. methods: case-control study was conducted in 2016. 300 employees of 3 oil depot in tehran were selected that 150 ...

data envelopment analysis (dea) measures the relative efficiency of a homogenous set of decision-making units (dmus) when multiple inputs and outputs are present. the deabased malmquist productivity index measuring the productivity change of dmus over time has proven itself to be a valid tool to compare group performance. however, in the previous models developed for this purpose, it was suppos...

In this article, we address the issue of conducting a sensitivity analysis of complex models with both static and dynamic uncertain inputs. While several approaches have been proposed to compute the sensitivity indices of the static inputs (i.e. parameters), the ones of the dynamic inputs (i.e. stochastic fields) have been rarely addressed. For this purpose, we first treat each dynamic as a Gau...