introduction: occupational exposure to excessive noise is commonly encountered in a large number of industries in iran. this study evaluated the hearing threshold and hearing loss in meybod tile factory workers. methods: this cross-sectional study included 371 tile factoryworkers during summer and autumn of 2005. current noise exposure was estimated using sound level meter .a specially formatte...

This paper deals with the problem of optimizing a factory floor layout in a Slovenian furniture factory. First, the current state of the manufacturing system is analyzed by constructing a discrete event simulation (DES) model that reflects the manufacturing processes. The company produces over 10,000 different products, and their manufacturing processes include approximately 30,000 subprocesses...

In this paper, the concept of self-replicating robots (SRRs) is reviewed, and the feasibility of a particular kind of minimalistic SRR is analyzed in the context of lunar resource development. The key issue that will determine the feasibility of this approach is whether or not an autonomous robotic factory can be devised such that it is light enough to be transported to the moon, yet complete i...

The KEKB collider complex consists of highand lowenergy rings, and an 8-GeV Linac. Some of the resources were inherited from the previous TRISTAN project, and also they are shared with the Photon Factory and PF-AR light sources. In order to realize the long lifespan of the system, de-facto and international standard technologies were employed since the early stage, which have been efficiently o...

introduction in radiography, dose and image quality are dependent on radiographic parameters. the problem is caused from incorrect use of radiography equipment and from the radiation exposure to patients much more than required. therefore, the aim of this study was to implement a quality-control program to detect changes in exposure parameters, which may affect diagnosis or patient radiation do...

The effects of stimulus frequency and bandwidth on distance perception were examined for nearby sources in simulated reverberant space. Sources to the side [containing reverberation-related cues and interaural level difference (ILD) cues] and to the front (without ILDs) were simulated. Listeners judged the distance of noise bursts presented at a randomly roving level from simulated distances ra...

This study assessed the environmental impacts of a pelagic fishmeal and fish oil production plant in Iceland with life cycle assessment methodology. The focused on assessing effects different energy sources for utility due to high intensity production, as quality improved lower cooking temperature. hotspots three processing scenarios were assessed, where factory was run hydropower ( Scenario 0 ...