胜利油田语言使用状况调查——中国新兴工业区语言使用个案研究

胜利油田是新中国兴建的大型工业区之一,曾是中国的第二大油田。对胜利油田普通话和方言两种语码的使用情况进行社会语言学调查发现:普通话是胜利油田工业区的通用语言,而方言的功能和语域则十分有限。胜利油田"普通话状态"的形成主要与油田人口构成和流动、油田居民语言态度、城市化建设和经济结构有关。胜利油田工业区形成了以东营区为岛心,以周边东营市、邻近区县为外围,由内向外辐射的环形语言岛。     

THE POTENTIAL OF INTEGRATED POPULATION MODELLING†

Recent work has shown how the Kalman filter can be used to provide a simple framework for the integrated analysis of wild animal census and mark‐recapture‐recovery data. The approach has been applied to data on a range of bird species, on Soay sheep and on grey seals. This paper reviews the basic ideas, and then indicates the potential of the method through a series of new applications to data on the northern lapwing, a species of conservation interest that has been in decline in Britain for the past 20 years. The paper analyses a national index, as well as data from individual sites; it looks for a change‐point in productivity, corresponding to the start of the decline in numbers, considers how to select appropriate covariates, and compares productivity between different habitats. The new procedures can be applied singly or in combination.     

环Z/PkZ上矩阵乘法半群的一个结果

研究了有限局部环R上不同阶矩阵半群Mn(R)到φ的同态,得到了在n 3,n>m(n,m∈Z+)条件下,矩阵乘法半群Mn(R)到Mn(R)的同态φ的具体形式.     

一个新的拓扑指数与卤代芳烃化合物溶解度及分配系数的相关性

在分子价连接性指数的基础上 ,定义了分子中原子的价点价δyi 这一特征值 ,δyi=mi·Zi·(Zi-hi)·(8-Ni) hi 2ni [4·(Li+pi)·(ni-1 ) ].由δyi 建构的分子价连接性指数为nχy(n=0 ,1 ,2 ,… ) ,nχy=∑ (δi·δj·δk… ) -0 .5,其中 0阶指数为0 χy=∑ (δi) -0 .5,1阶指数为1χy=∑ (δiδj) -0 .5.将这种新的分子价连接性指数nχy 用于一些卤代芳烃定量结构—性能相关性(QSPR)研究 ,发现nχy 分别与卤代芳烃的水溶解度 -lgSw,正辛醇水分配系数 -lgKow有良好的线性关系 ,相关系数都在 0 .95以上 .所建构的模型 (QSPR)相关系数高 ,稳定性好 ,预测能力强     

半群环原子性的一个必要条件

讨论了半群环的不可约单项式 ,从而得到了半群环原子性的一个必要条件     

加群上的NEAR环

本文讨论了加群上保持零元的映射集合对映射的加法和乘法作成的Near环,证明了它是具有可换加法和单位元的零对称Near环,讨论了它的理想特点,并构造了几类特殊的左、右理想。     

Circumcising the body: negotiating difference and belonging in Germany

ABSTRACT

The circumcision debate in Germany in 2012 is an exemplary case for symbolic struggles over national boundaries. The debate became a site for the negotiation of traditions practiced by religious minorities. We ask, first, how the clinical gaze constitutes Muslim and Jewish others. Second, we investigate how ‘writing around’ the debate’s center, bodily integrity, became meaningful through analogies to other practices said to harm it. We compare newspaper coverage in Germany, Israel and Turkey, and reveal transnational discursive dynamics that transgress national boundaries. We show how ‘otherness’ of Muslims and Jews remains present in a self-perceived secular, liberal imaginary.     

牛顿环零级条纹的相关探讨

牛顿环零级条纹是“明”还是“暗”，有关文献表述不确切，文章就此展开探讨，并明确指出文献[5]的说法比较妥当，即“在其中心接触点处d→O时，两反射光的光程差δ→D，所以在此处是暗条纹，而事实也正是如此。”     

关于分次拟正则环的性质

将分次正则环的概念推广到分次拟正则环上 ,研究了分次拟正则环的若干重要性质 ,并给出了分次拟正则环成为分次正则环的条件     

结合环的一致强素根

通过引入一致强素模给出一致强素根的模刻划，从而使一致强素根的模刻划问题得到解决。