Today industrial companies are subject to major and profound changes. It is constantly confronted with a world of ruthless competition that continually aims improve quality, cost, lead time. Each company works satisfy the requirements its customers do this, it improves performance controls manufacturing processes from reception raw materials suppliers shipment final product customer. In this pa...

background: ergonomics is a science that provides methods of creating reasonable adaption between occupation and worker by improving usability through consideration of job demands and human ability to satisfy them. a deep understanding of user’s thoughts on and attitudes toward utilizing a tool could improve its design. in the present study, two cushions designed particularly for one of car ind...

Since the early days of manned spaceflight, hazardous effects of the space environment on living organisms have been disputed. With the continuous manning of the International Space Station, the planned Chinese space station, and renewed interest in returning to the Moon and sending manned flights to Mars, identifying and addressing the potential outcomes of long-term space exposures is critica...

Printed circuit boards (PCBs) are extensively used in diverse electronic products today. The placement process is generally the bottleneck in a PCB assembly line. Many researchers have indicated that an optimal component placement sequence reduces the cycle time of an assembly line with single placement machines. However, in current PCB assembly lines, more than one placement machine, including...