the permit to work system (ptws) provides a practical framework for our staff and contractors to abide by our commitment of no harm to people or the environment and also, the ptw system intended to provide an effective means of identifying significant hazards and managing significant hse risk activities. in other words, it provides a set of eyes that focus on significant hse risk activities to ...

persian gulf and its coastal areas are the world's largest source of crude oil and related industries govern the region. one of the contaminants in this area is heavy metals associated with oil spill. more importantly, vanadium, nickel and zinc can be named in this regard. in this study, the contamination of northern coasts of persian gulf is selected to investigate for trace metals of v, ni, c...

In today's world, Public expenditures on health are one of the most important issues for governments. These increased expenditures are putting pressure on public budgets. Therefore, health policy makers have focused on the performance of their health systems and many countries have introduced reforms to improve the performance of their health systems. This study investigates the most important ...

Various approaches to alignment-free sequence comparison are based on the length of exact or inexact word matches between two input sequences. Haubold et al. (2009) showed how the average number of substitutions between two DNA sequences can be estimated based on the average length of exact common substrings. In this paper, we study the length distribution of k-mismatch common substrings betwee...

We propose a recursive multi-resolution collaborative architecture (MRCA), based on multi-agent coordination mechanisms as a solid foundation for the development of web-centric cooperative applications in global manufacturing. The architecture consists of three layers: a low-level internetworking communication-support layer; a coordination layer ± managing inter-agent cooperation through intell...

the effective and sustainable environmental performance of a business is a result of various factors and most important the integrated outcome of the environmental management. likewise, the integration of environmental protection into the armed forces functions has also gain interest for the military sector internationally. therefore, the environmental management system (ems) is recognized as o...