the establishment of good process safety management (psm) is widely considered as the most effective means of improving safety levels in process industries. this study was conducted to evaluate the feasibility of establishing and implementing psm requirements based on occupational health and safety assessment series 18001 standards (ohsas 18001) and health, safety and environment management sys...

Patient safety programs require meaningful metrics. Dominant frameworks are based on two safety metrics: one that seeks to identify, measure, and eliminate error and one that seeks to identify, measure, and eliminate injuries. However, non-health care safety programs suggest a third framework, hazardor risk-based measurement. Error measurement has many limitations, including the issues of error...

Model-based safety analysis approaches aim at finding critical failure combinations by analysis of models of the whole system (i.e. software, hardware, failure modes and environment). The advantage of these methods compared to traditional approaches is that the analysis of the whole system gives more precise results. Only few model-based approaches have been applied to answer quantitative quest...

With the advent of computers to control various physical processes, there has emerged a new class of systems which contain tight interactions between the “discrete” digital world and the “continuous” physical world. These systems which exhibit mixed discrete-continuous behaviors, called hybrid systems, are present everywhere in automotives, aeronautics, medical devices, robotics and are often d...

with rapid economic development and industrialization, the construction industry continues to rank among the most hazardous industries in the world. therefore, construction safety is always a significant concern for both practitioners and researchers. the objective of this study was to create a structural modeling of components that influence the safety performance in construction projects.we f...

The virtual class 15] construct was rst introduced in the language Beta to provide added expressiveness when used with inheritance. Unfortunately, the virtual class construct in Beta is not statically type-safe. In this paper we show how a generalization of the semantics of object-oriented languages with a MyType construct leads to a variant of virtual classes which needs no run-time checks. Th...

The Virginia Internet safety program is the first statewide educational strategy to improve children's Internet safety. It aims to improve children's Internet safety knowledge through a developmentally appropriate and highly interactive online program. To assess the initial effect of this program, 1,379 fourth graders were assessed with a questionnaire covering ten aspects of Internet safety kn...