noise is a common and widespread problem in workplaces. noise can lead to hearing loss, hypertension, nervous and mental disorders, annoyance and stress, sleep disturbance, negative impact on productivity and working capacity. the undesirable effects of noise on an individual or group are called annoyance. some personal and social characteristics can affect on annoyance. this study was aimed to...

Article history: Received 22 December 2007 Received in revised form 15 November 2008 Accepted 15 November 2008 Available online 29 December 2008 We present a model of optimal flow pollution control considering explicitly the dynamics of the corresponding assimilative capacity. We focus first on the degradation of this assimilative capacity triggered by pollution excesses and determine the inter...

It is rapidly becoming obvious that with the current trends in technology, interconnect delays are becoming an increasingly dominant factor in determining circuit speed. Until recently, interconnect resistance was often insigni cant, while its capacitance was not, and hence optimal interconnect design frequently involved ensuring that all wire sizes were minimal. However, with advancement in te...

protecting the environment is becoming one of the most important concerns of the developed and developing countries. reclamation of msw landfills, which are sources of many pollutants including leachate and greenhouse gases, would be very valuable in saving the resources and reducing the pollution scale. in the current article the potential for use of reclaimed waste in rdf production has been ...

Aggressive hardware-based and software-based prefetch algorithms for hiding memory access latencies were proposed to bridge the gap of the expanding speed disparity between processors and memory subsystems. As smaller L1 caches prevail in deep submicron processor designs in order to maintain short cache access cycles, cache pollution caused by ineffective prefetches is becoming a major challeng...

The impact of logistics activities on the environment is becoming more and obvious with development society economy, increasing flow. Meanwhile, transformation management larger scale equipment had a great influence that. For instance, excessive vehicle transportation increases fuel consumption road requirements. It results in exhaust gas, noise, many other pollution traffic jams; Excessive pac...