Gestational surrogacy is a reproductive arrangement where woman gestates child for others—the “intended parents”—in order to be handed over them after birth. Since the turn of millennium, demands have continuously increased due social and demographic changes, rising rates infertility, normalization new, non-heteronormative, family forms. Many countries prohibit surrogacy, others that previously...

According to the DCT structure and principle, the dynamic shifting process of DCT has been analyzed, and the engine and clutch model have been established. The driver intention has been analyzed and distinguished through the fuzzy control theory, on this basis, gear shift rule has been formulated based on driver intention,separately from the power performance and economy performance. Clutch and...

This paper describes the current status of occupational health and safety countermeasures in Beijing, China. It includes the network and organization of occupational health, occupational health personnel, the refitting of industrial structures, hazardous agents at workplaces, the classification and incident rates of occupational diseases. The management of occupational health and safety, new ch...