-This presentation will discuss the relative merits of various monitoring schemes, and show that by providing faster turn-up time, minimizing dowii-time in case of ii fault and enabling performance optimization, optical domain performance monitoring provides cost savings to network operators. For applications applied in the Internet today, bit error requirements may be considerably alleviated a...

We apply a new corrected diffusion approximation for the Erlang C formula to determine staffing levels in cost minimization and constraint satisfaction problems. These problems are motivated by large customer contact centers that are modeled as an M/M/s queue with s the number of servers or agents. The proposed staffing levels are refinements of the celebrated square root safety staffing rule, ...

Objectives: Because of the high rates of accidents, the construction industry has become a hazardous industry in Iran and therefore paying more attention is required. This paper investigates safety management in construction companies for improving workers’ safety as one of the ergonomics aims. Methods: In order to survey the safety management in construction companies a questionnaire was pr...

Licensed child care centers are generally considered to be safe because they are required to meet state licensing regulations. As part of their licensing requirements, many states inspect child care centers and include an assessment of the health and safety of the facility to look for hazardous conditions or practices that may harm children. However, most states do not require an environmental ...

The Crash Injury Research and Engineering Network has developed a computer database and wide area network for data sharing and analysis among 8 trauma centers. The computer database extends the National Highway Traffic Safety Administration's National Automotive Sampling System with medical- and trauma-related variables in a relational/object database system. The medical data include injury loc...

In designing a supply chain, firms are often faced with the competing demands of improved customer service and reduced cost. We develop a model that incorporates fixed distribution center location costs, working and safety stock inventory costs at the distribution centers, fixed and variable transport costs from a plant to the distribution centers and delivery costs to customers. Service is mea...