SW规约下的一些性质

本文进一步分析了SW规约下的SW度结构的一些性质,得到了强可计算实数的两个性质.并且证明了给定可计算可枚举实数,可构造出sw归约下不小于该数的低的可计算可枚举实数.     

关于西藏高校“计算机文化”课程教学考核改革思考

在科技迅速发展的今天,信息化管理及其人们对新信息的需求程度不断提高,计算机技术的应用日益深入到各行各列,西藏高校的"计算机文化"课程的教学方法和考核方式都迫切需要改革。文章在教学实践的基础上,对我区高校"计算机文化"课程的教学方法及考核方式改革进行了探索。     

The Difference of the Pulmonary-Artery Pressure of the Migrants from Difference Elevation at the 4636 - 4907 m Altitude

Study Objective： To compare and analyze the changes of the pulmonary-artery pressure of the migrants coming from different elevation in the hypoxic environment of 4636 - 4907 m extreme altitude. To explore the susceptibility to hypoxic pulmonary-artery hypertension （PH） in the subjects from different altitude and profession. Methods： By using Color Doppler Ultmsonography （CDU）, measuring the pulmonary-artery pressure of 207 healthy men, who had continuously being lived and worked at the extreme altitude for more than six months, and then were divided into three groups according to their profession and the altitude of original living place. Results： There was a significant difference in the outcomes of pulmonary-artery pressure from the 3 groups. Conclusions： Altitude of original living place, labor intensity are some of factors that impact the pulmonary-artery pressure of the people who exposure to a hypoxic environment. The pulmonary- artery pressure of person without strenuously physical work experience was more sensitive to hypoxic surroundings than that of labor workers. It was not always the fact at an extreme altitude that the moderate altitude mountaineers were superior to other migrants from a lower altitude or plain. The higher PH was found in the groups of the moderate altitude mountaineers and labor workers. It is unlikely certain that one with PH would surfer from HAPE.     

Prof. Zhu Zuoyan Met with the INRA Delegation

Prof. Zhu Zuoyan, Vice President of NSFC, met with the National Institute of Agricultural Research (INRA) delegation led by its Deputy Director General, Prof. Guy Riba on Jan. 18, 2007.     

绢纺生产用抗静电剂的研究——SS1与SS2绢纺抗静电剂

本文对绢纺生产用抗静电剂的配方进行了研究,研制出SS1及SS2绢纺抗静电剂。应用表明,采用此类抗静电剂,不但降低了生产中的静电,而且提高了梳折;在圆梳系统中提高了3.23％,在精梳系统中提高了3.1％;同时精绵的长度和强力也有所增加,从而提高了经济效益。     

改性沥青防水卷材的地下室施工

介绍新型防水材料ＳＢＳ改性沥青柔性油毡的性能、施工工艺、操作方法及保证质量的措施，并提出存在的问题及施工中注意事项。     

钢丝绳张力单片机检测系统

论述了以８０３１为控制核心的钢丝绳张力单片机检测系统的工作原理、数学模型和系统组成，重点介绍了钢丝绳张力检测的工作原理、主要硬件电路的设计特点及软件设计思想，提供了部分硬件电路图及控制软件的流程图。该系统具有置数、动态显示、数据处理、打印及人机对话等功能，并且使用方便，造价低廉。     

DEDS的模拟退火仿真优化方法

本文对模拟退火优化方法进行了修改,使它能较好地适应于DEDS的仿真优化研究.文中对两种优化状态下,仿真目标值之差的估计误差性质进行了分析,并对修正后算法收敛的最优性进行了理论证明。     

微波与生物组织的相互作用及微波理疗中若干实际考虑

本文论述了描述微波与生物组织相互作用的数学表达式,讨论工作频率选择、透入深度、反射、极化、泄漏及防护等实际问题。