居住区老年人户外活动及其空间特征研究——夏季户外活动实态调查

以北京市近年来新建的居住小区为例,对夏季老年人户外活动的类型、时间规律、活动空间的特征进行了调查分析与规律总结,在此基础上提出夏季居住区老年人户外活动空间设计的建议。     

On Becoming a Social Housing Manager: Work Identities in an ‘Invisible’ Occupation

Social housing in Britain is managed by a large grouping of ‘housing managers’, an occupational label which is viewed as unproblematic by most housing academics, and therefore, is largely taken for granted. Urban sociologists posit that a collective identity is crucial to professional status, and hence have been sceptical of housing managers' prospects of furthering their aims collectively. The paper departs from this focus on the collective endeavours of housing management as a profession to examine how housing managers themselves create and present self-identities. Specifically, it argues that housing managers use the lack of a collective identity as an opportunity to manage the ‘spoiled identity’ of being in an ‘invisible’ and marginalised profession. In doing so, they construct individualised occupational trajectories which bear little relation to the domain professionalism of more established occupations.     

组合恒等式的几种证法及应用

组合恒等式在组合数学中占有重要的地位,它有多种证法,运用集合论的观点,求导法则和概率方法对几个重要的组合等式给出了直观简洁的证明.     

组合恒等式的几种证法及应用

组合恒等式在组合数学中占有重要的地位，它有多种证法，运用集合论的观点，求导法则和概率方法对几个重要的组合等式给出了直观简洁的证明．     

基于对地观测激光回波特征的目标特性研究

本文研究了对地观测激光回波特征与地面目标特征之间的关系模型，分析了分类地面目标的激光回波特征，提出一种基于查表法的目标特性计算方法并给出了仿真结果。     

Equitone Predicate Algebras and Their Applications

Predicates that preserve their values on a larger (extended) body of data are called equitone. An algebra of such predicates is constructed, a system of its generators is specified, and a complete system of transformations of identities is defined. The results obtained are used for construction and investigation of complete classes of compositions of various types and levels of abstractions that are used in logics of partial predicates.     

二维系统中的共形群

确定了共形映射与坐标变换之间的关系;推导了共形群的四个子群和二维共形Ward恒等式;综述了二维共形场论的理论基础及其于Virasoro代数的关系。     

基于传感器网络的多目标跟踪和特征管理方法

针对传感器网络下多目标跟踪时目标数量不断变化这一复杂情况,文中对多目标的跟踪和特征管理方法进行了研究。该方法由数据关联、多目标跟踪、特征管理,和信息融合所组成。其中未知数量多目标的跟踪和数据关联通过马尔科夫蒙特卡罗数据关联实现。通过信息融合来整合本地信息,获取所有相邻传感器的本地一致性,最终实现特征管理。试验证明,本方法能够在分布式的传感器网络环境下对多目标进行准确有效地跟踪和特征管理。     

Noether定理的推广及应用

给出了非定域变换下的广义Ｎｏｅｔｈｅｒ恒等式（广义Ｎｏｅｔｈｅｒ第二定理）．将其应用于规范场理论，导出了新的ＰＢＲＳＴ荷和“非定域”荷。     

场论中泛函积分表述中的正则对称性

对场采用泛函积分量子化,从正则变量表述的Green函数的生成泛函出发,分别导出了用非奇异拉氏量和奇异拉氏量描述的系统在相空间中的广义Ward恒等式,指出一般情况下奇异系统量子正则方程与Dirac猜想给出的正则方程是不同的,讨论了声子、电子和光子系统的奇异拉氏量描述,导出了该系统Green函数的生成泛函,给出了正则形式的广义Ward恒等式的初步应用。