寄生在同一个链条上的两害——乌鲁木齐市贩毒、吸毒人群与艾滋病人群的相关研究

新疆毗邻世界毒源重地"金新月"地区,特殊的地理位置为国际、国内大小毒枭所垂青,使其不仅是毒品的集散地,也是吸毒的重灾区。同时,当地的艾滋病疫情也不容小视。调查研究表明:乌鲁木齐(包括新疆)不是制毒的基地,而是"金新月"毒贩选定贩运毒品的重要通道;贩毒、吸毒、艾滋病,没有民族界限;贩毒———吸毒与艾滋病是同一链条上的两害,是当地艾滋病疫情的主要成因。     

商周"鼎"观念的二元结构

鼎是商周礼器中的代表性器物.在它身上,既凝聚了现实生活的世俗性,又饱含古人的文化想象.本文从其创制入手,通过分析上古文献,阐述商周时代鼎在人们心目中的"神圣/世俗"二元结构存在.     

关于含参变量无穷积分的绝对一致收敛的注记

本文从一个反例 ,证明了即使∫∞af(x ,t)dt绝对收敛且一致收敛 ,但不能推出∫∞a |f(x ,t) |dt一致收敛。     

广义岭选择指数(英文)

把岭回归的原理和方法应用到家畜性状的选择指数中 ,提出了广义岭选择指数 ,理论和实践证明的这一指数形式在一定意义上优于传统的选择指数。也可以说 ,它在一定意义上丰富了选择指数的理论 ,但不能代替经典的选择指数     

Current and Future Problems of Capital Accumulation in the Chinese Pension System

The decree establishing a uniform system of basic pensions for employees in municipal and private enterprises, published by the State Council on 16 July 1997, reflects the Chinese Government's ultimate choice in favour of a partly private funded scheme to cover future pension needs. This article examines the reasons which led to this choice and asks how easy or otherwise it will be to find the capital to finance it. The authors believe that the partly private scheme is more advantageous than other methods and is right for China. Many issues, however, remain the focus of lively debate. In particular, a realistic coordination of individual and group accumulation is needed in order to avoid shortfalls in capital formation and the dangers of inadequate benefit provision. To safeguard the subsistence needs of former workers in state-owned enterprises, a system of equalization at national level is needed, and problems continue over how future pension insurance funds should best be managed.     

论当代中国政府经济职能的战略性重构

政府经济职能战略性重构的内涵是 :防止、纠补“政府失灵”和克服、弥补“市场失灵”。相应的对策 :一是限制和约束政府权力和职能 ,包括以政企分开为突破口 ,加快现代企业制度建设 ;规范政府干预职能及行为 ;加强对政府调控行为的监督 ;在政府经济职能重构的基础上 ,精简政府机构等。二是提升政府能力特别是宏观调控能力 ,包括财政宏观调控能力、金融宏观调控能力和行政组织调控能力 ;提高政府决策的科学化程度 ;将成本—效益观念和竞争机制引入政府调控的某些领域等 ,从而积极、适度、有效地行使政府对市场运作的宏观调控职能 ,充分发挥政府干预与市场调节二元机制的优势互补作用     

关于专利行政执法问题的探讨

专利行政执法在专利制度中具有重要的不可替代的作用。专利管理机关对专利纠纷的调处行为不是具体行政行为而属于居间仲裁。本文在进行理论和实务论证的基础上 ,提出以下立法建议 :当事人不服专利管理机关就专利纠纷所作处理决定向法院起诉时 ,仍应以纠纷的相对人为诉讼当事人 ;增加专利管理机关的执法手段 ;加大专利管理机关的处罚力度 ;对专利复审委员会就实用新型、外观设计的复审决定 ,当事人应有权启动司法程序 ;实用新型专利侵权诉讼中 ,专利权人应提交专利局就争议专利技术的专利性出具的检索报告 ,法院依据检索报告进行专利侵权的判定 ,不中止侵权诉讼。     

草地早熟禾主要经济性状间的灰色关联分析

应用灰色关联分析方法研究了坪用草地早熟禾地上生物量、生殖枝数、生殖枝高、穗长、穗粒数、结实率等6个主要经济性状与种子产量以及各性状之间的关联程度。结果表明,各性状与种子产量之间的关联度大小依次为单位面积生殖枝数＞单位面积地上生物量＞生殖技高＞穗长＞结实率＞穗粒数。地上生物量对生殖校高、生殖枝数和穗长的影响较大。     

移动技术教学之我见

本文对移动在篮球运动中的重要意义和作用,进行了深入的研究,对移动的教学方法进行了实践和总结。     

Feature selection based on distance correlation: a filter algorithm

Feature selection (FS) is one of the most powerful techniques to cope with the curse of dimensionality. In the study, a new filter approach to feature selection based on distance correlation is presented (DCFS, for short), which keeps the model-free advantage without any pre-specified parameters. Our method consists of two steps: hard step (forward selection) and soft step (backward selection). In the hard step, two types of associations, between univariate feature and the classes and between group feature and the classes, are involved to pick out the most relevant features with respect to the target classes. Due to the strict screening condition in the first step, some of the useful features are likely removed. Therefore, in the soft step, a feature-relationship gain (like feature score) based on the distance correlation is introduced, which is concerned with five kinds of associations. We sort the feature gain values and implement the backward selection procedure until the errors stop declining. The simulation results show that our method becomes more competitive on several datasets compared with some of the representative feature selection methods based on several classification models.