被征地农民就业与参保意愿及政策建议——基于西安市调查的分析

通过问卷调研,对被征地农民的就业与参加社会保障的现状、意愿及其影响因素进行研究。首先,被征地农民的就业率低主要原因是缺乏市场竞争意识,就业意愿与就业能力有偏差。其次,政策宣传力度不够和被征地农民社会保障制度存在缺陷,是被征地农民参保意愿低的主要原因。除此之外,征地补偿标准不合理、被征地农民市民化程度低,是造成被征地农民"弱势"地位的深层次原因。对此,应根据被征地农民的需求,建立多种形式的就业培训和就业扶助,尤其扶持有意向的被征地农民自主创业;为实现与城镇社会保障的对接,应建立多层次的被征地农民社会保障体系。     

A multivariate zero-inflated binomial model for the analysis of correlated proportional data

In this paper, a new multivariate zero-inflated binomial (MZIB) distribution is proposed to analyse the correlated proportional data with excessive zeros. The distributional properties of purposed model are studied. The Fisher scoring algorithm and EM algorithm are given for the computation of estimates of parameters in the proposed MZIB model with/without covariates. The score tests and the likelihood ratio tests are derived for assessing both the zero-inflation and the equality of multiple binomial probabilities in correlated proportional data. A limited simulation study is performed to evaluate the performance of derived EM algorithms for the estimation of parameters in the model with/without covariates and to compare the nominal levels and powers of both score tests and likelihood ratio tests. The whitefly data is used to illustrate the proposed methodologies.     

级别不低于方法及其发展评述

级别不低于方法是一类解决多属性决策问题的重要方法.相对于其他方法力图建立可行方案集上的完全序.级别不低于方法所构建的是一种较弱的二元关系--级别不低于关系,它所要求的条件较弱,而得到的结果更为可靠.是近年来研究最为活跃、应用十分广泛的方法之一.本文将级别不低于方法划分为ELECTRE、PROMETHEE和PCCA等三大类分别进行了归纳和总结;介绍了近年来级别不低于方法的新发展,对级别不低于方法的公理化.不确定信息下的级别不低于方法以及多属性决策的敏感性分析和鲁棒性分析等问题给出了一些有意义的讨论.特别是对鲁棒性的定义和分析方法提出了一务切实可行的思路.     

网络思想政治教育研究范式的未来转向

网络思想政治教育赖以生存的环境是网络社会,网络赋能让网络思想政治教育不再完全依附甚至嵌套在思想政治教育中。梳理思想政治教育和网络思想政治教育的学科边界,有助于明晰网络思想政治教育研究范式未来转向的理论基础和学科支撑。当前,网络思想政治教育研究范式转向主要包括:教学关系转向主体对主体,教育载体从板块转向共通,话语体系从逻辑映照转向人际关照。网络思想政治教育未来的研究范式转向,应坚持以马克思主义研究范式为指导,结合网络亚文化样态和网络思想政治工作需求,立足于交叉学科支撑,始终扎根思想政治工作实际。     

家庭托育点管理实践及启示：政策工具的视角

家庭托育点的规范化对婴幼儿健康成长至关重要。通过文献收集和访谈获得既往管理举措和当前试点政策,运用政策工具进行分析和总结,探究管理家庭托育点的背景、对象和措施。结果表明：家庭托育点因经济优势而被纳入管理,现有征求意见稿管理对象偏向小规模邻托,但试点和市场偏向较大收托规模;消防审查依托既有消防验收,师资准入要求偏低,质量监管依靠政府。管理建议：应根据收托规模区分小型和大型家庭托育点开展试点;完善三方协同的管理架构,设定专门空间环境要求,提高师资准入要求,建立综合质量监管。     

钱钟书和马一浮学术态度比较

“不开宗派不为师”,是钱钟书和马一浮两位学术大师共同的学术态度,虽然具体缘由不尽相同,但都植根于中国古代“为己之学”的传统。     

我国外贸代理制度的法律冲突及其消解

我国《合同法》第402条和第403条引入的英美法上的代理制度,在逻辑上软化了我国《对外贸易法》中关于国营贸易经营权的强制性规定,破坏了仲裁条款的相对性原则,架空了行纪合同制度。所以,在实践中需要采用利益衡量的方法、体系解释的方法、目的解释的方法和历史解释的方法等来化解这些冲突与矛盾,从而符合立法本意。     

A Tiered Framework for Risk‐Relevant Characterization and Ranking of Chemical Exposures: Applications to the National Children's Study (NCS)

A challenge for large‐scale environmental health investigations such as the National Children's Study (NCS), is characterizing exposures to multiple, co‐occurring chemical agents with varying spatiotemporal concentrations and consequences modulated by biochemical, physiological, behavioral, socioeconomic, and environmental factors. Such investigations can benefit from systematic retrieval, analysis, and integration of diverse extant information on both contaminant patterns and exposure‐relevant factors. This requires development, evaluation, and deployment of informatics methods that support flexible access and analysis of multiattribute data across multiple spatiotemporal scales. A new “Tiered Exposure Ranking” (TiER) framework, developed to support various aspects of risk‐relevant exposure characterization, is described here, with examples demonstrating its application to the NCS. TiER utilizes advances in informatics computational methods, extant database content and availability, and integrative environmental/exposure/biological modeling to support both “discovery‐driven” and “hypothesis‐driven” analyses. “Tier 1” applications focus on “exposomic” pattern recognition for extracting information from multidimensional data sets, whereas second and higher tier applications utilize mechanistic models to develop risk‐relevant exposure metrics for populations and individuals. In this article, “tier 1” applications of TiER explore identification of potentially causative associations among risk factors, for prioritizing further studies, by considering publicly available demographic/socioeconomic, behavioral, and environmental data in relation to two health endpoints (preterm birth and low birth weight). A “tier 2” application develops estimates of pollutant mixture inhalation exposure indices for NCS counties, formulated to support risk characterization for these endpoints. Applications of TiER demonstrate the feasibility of developing risk‐relevant exposure characterizations for pollutants using extant environmental and demographic/socioeconomic data.     

关于三分Cantor集的结构的一些新结论

旨在采用代数的方法来研究三分Cantor集的结构特点。主要结果除了给出三分Cantor集的代数构造外还定义了仿四进位；结合代数构造、拓扑构造以及仿四进位分别给出并证明了三分Cantor集及其余集的结构公式，从而改进了已有的结论。