in different projects the speed of different machinery can be estimated using manufacturer's handbooks and a number of modification factors to consider the environmental effects, type of the project and status of site management. since the statuses of different factors of the domestic projects are totally different from those of the international projects, there is a wide discrepancy betwe...

background and purpose: study skills is one important factor influencing academic achievement of students . we must replace ineffective models and habits of study with more fruitful skills in order to gain better learning. this study investigates the study skills and habits of medical students and their educational achievement. methods: based on a pilot study the sample size was estimates as 40...

This paper considers the effect of active speed management on traffic-induced emissions. In particular, the traffic emissions caused by acceleration and deceleration of vehicles are modelled based on an instantaneous emission model integrated with a microscopic traffic simulation model. The emission model is based on empirical measurements which relate vehicle emission to the type, the instanta...

introduction gastric emphysema or pneumatosis is a rare finding. early endoscopy and urgent laparotomy is advised in post trauma patients. case presentation a 29 year old man presented with blunt abdominal injury following a high-speed motorbike crash he complained of abdominal pain and abdomen was distended. ct abdomen revealed air in the gastric wall with disruption of gastric mucosa. he had ...

With the development of E-commerce and the coming of information age, Chinese manufacturing industry has been faced with vast opportunities and challenges. How to realize comprehensive information is enterprises’ pursuit. The primary task is to establish reasonable and efficient management information system. Through the analysis of the principle and architecture of PDM and the roles of Ecommer...