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Investigation into the problem of characterization of the HF ionospheric fluctuating channel of propagation: construction of a physically based HF channel simulator
ionosphere Hf channel simulator
2015/9/14
A wideband HF simulator has been constructed that is based on a detailed physical model. It can generate an output giving a time realization of the HF wideband channel for any HF carrier frequency and...
Occupational Safety & Health Administration settles Building and Construction Trades Department challenge to hexavalent chromium standard
chromium standard occupational safety
2007/4/25
April 19, 2007，WASHINGTON -- The U.S. Department of Labor’s Occupational Safety and Health Administration (OSHA) signed an agreement April 6, 2007, with the Building Construction Trades Department (BC...
The prevention of work-related neck and upper limb disorders (WRULDs) in construction
work-related neck upper limb disorders
2014/4/25
WRULDs are impairments of bodily structures such as tendons, ligaments, nerves, muscles and the blood circulation system, caused by work and the effects of the working environment. WRULDs are widespre...
Musculoskeletal disorders are some of the most common forms of ill health in construction. Musculoskeletal disorders are particularly prevalent across a range of Construction industry trades with esti...
Construction is one of Europe’s largest industries, with an annual turnover in excess of EUR 900 billion and nearly 13 million employees in the EU-15 Member States alone. Unfortunately, it is also one...
Construction work is considered to be one of the most hazardous industrial activities in the EU. The rate of injury in the construction industry is higher than in other industries. The most frequent c...