深厚表土层冻结孔井斜控制技术

结合工程施工实践,针对冻结孔施工中的井斜控制技术进行了初步应用研究,优化后的井斜控制技术成功地用于工程施工。     

三相异步电动机缺相起动及运行的探讨

三相异步电动机缺相时无法正常起动,运行中缺相时转速变慢,缺相是造成电动机损坏的主要原因。为保证安全、可靠运行,三相异步电动机应设置电源缺相保护。     

交流电机变绕组匝数拓宽调速范围的新方法

在典型交流电机调速应用领域需要拓宽电机的调速范围。传统的拓宽电机调速范围的方法主要包括弱磁调速、 变极调速以及改变绕组结构等。针对电动汽车驱动电机应用背景,提出了一种拓宽交流电机调速范围的新方法,即在维 持电机本体结构与变频器功率等级基本不变的情况下,利用由少量全控和不控电力电子器件构成的绕组调节功率变换 电路,实现电机定子绕组等效匝数的连续可调。仿真结果表明,定子绕组等效匝数是可以通过脉冲控制方法实现连续可 调的,应用该方法,可以拓宽电机的调速范围,使其适应不同应用场合对电机转矩曲线的要求。     

韦伯论人与社会的关系

韦伯认为人是社会存在物,是理性存在与非理性存在的统一,是目的理性和价值理性的载体。在此人性论基础上,韦伯诠释了人与社会之间的互动性。这种互动性体现在:人是社会行动的主体,人通过价值观念和社会行动影响社会;社会是人存在的“场”,社会通过秩序影响人的价值观念和自由。文章认为韦伯的观点既有合理之处,也有不合理之处。     

论机动车交通事故民事赔偿责任革新：填补性到惩罚性

机动车交通事故民事赔偿一贯采取的填补性赔偿,是对机动车交通事故主观因素与客观因素考虑欠妥的结果。主观因素方面,机动车交通事故应当区分当事人的过错程度,即区分故意与过失、一般过失与重大过失。在归责原则上应全面坚持过错责任原则,符合个人就自身行为所肇致的损害应负赔偿责任的基本观念。客观因素方面,机动车交通事故损害不应固守类型化区分,而应进行程度化区分,即轻微损害、一般损害、重大损害。主观因素与客观因素相结合,机动车交通事故责任中应当引入惩罚性赔偿,搭建填补性与惩罚性结合的赔偿架构。     

State Council Issued Opinions on Further Promoting Reform of Household Registration System

正In order to fulfill the requirement of further promoting the reform of household registration system,accelerate orderly citizenization of permanent residents and give impetus to full coverage of urban basic public services for permanent residents,the State Council has issued the following opinions recently.Overall Requirements Guiding Ideology To meet the needs for advancing new urbanization,further promote the reform of household registration system and carry out the policies     

从《二年律令》看汉代"户赋"和"以赀征赋"

长期以来,学术界认为汉代不存在户税,或曰人头税按户征收。但根据发现的考古材料考证,汉代存在户赋征收制度,户赋的征收标准在汉初是按爵位分等级征收,其后随着爵制的泛滥,逐渐为以赀征赋的标准所取代。     

网上交易:大型券商的困境、模式创新和策略

在发展网上交易过程中存在着传统方式与现代交易方式、技术与服务问题、成本和收益、网上交易的客观障碍等困境,对此,证券公司今后发展网上交易要:1.模式创新,2.技术与服务同步创新。网上交易将不再仅仅是交易的一种手段,而是经纪业务由传统模式转向现代化网络方式,由有形化交易转向无形化交易的推动力,将对证券公司"咨询化、智能化"战略赋予全新的内涵。     

Outcomes of permanent family placement for children of minority ethnic origin

The paper explores the outcomes of permanent family placement for children of minority ethnic origin, using a sample of 254 placements drawn, in the main, from a cohort of 1165 British children placed between 1980 and 1985. Statistical techniques are used to explore the relationship between 'success' (defined, for the purposes of this paper, as the placement not known to have broken down) and a range of variables, including the characteristics of the child, the birth parents and the adoptive parents, and the type of placement. In most respects, the findings are consistent with those of similar studies. Age at placement is found to have an important effect, with success least likely for children placed in the middle age range. Lack of problem behaviours in the children at the time of placement is also found to be associated with success. Variables which are found to have no effect on the probability of success include ethnic origin of the child, whether it is an adoptive or permanent foster placement, and whether contact with birth parents continued after placement. There was an interesting gender effect in that boys did better in 'transracial' than in 'matched' placements, but the opposite was the case for girls.     

上海汽车产业绿色升级研究

伴随着我国汽车产业的迅猛发展,绿色环保汽车的设计与生产、废旧汽车的绿色回收等问题成为研究的热点,汽车产业链的绿色升级势在必行。汽车产业链包括汽车生产的产业链,也包括汽车消费及后消费的产业链。产业链的不同环节间存在着输入端资源减量和输出端污染减量的相互作用,必须通过上下游的协同运作来提升产业链的整体环境绩效。将创新型商业模式的产品服务系统与作为环境保护策略的生产者责任延伸制整合起来,研究两者耦合可为汽车产业绿色升级带来新思路和新方法。