民族文化屏障与生态建设——以哈尼族宗教文化为例

哈尼族宗教艺术中蕴含着独特的生态智慧,这种生态智慧实质上是一种文化屏障.在生态文明领域,本文首次提出了“文化屏障”这一概念,并通过分析发现哈尼族宗教艺术所形成的文化屏障,对于保护传承本民族优秀文化,排斥强势文化的消极影响,均具有积极的意义.文章进而对如何在协调保护本民族优秀文化的基础上,吸收、借鉴外来强势文化的问题,进行了探索.     

社会主义核心价值体系与高校思想政治教育

高校学生是践行社会主义核心价值体系的生力军。使高校学生正确认识并努力掌握社会主义核心价值体系,是当前加强大学生思想政治教育的一项紧迫而又重要的任务。     

滞胀时期的美国基金行业分析

滞胀时期是美国基金行业漫长的冬天,另一方面,也为基金行业的休整和重新洗牌提供了机会。文章回顾了滞胀时期美国基金行业的发展过程和变化。这段特殊的历史验证了产品创新和产品线的完善、良好的产品结构的重要性。     

Ensemble Approaches to Estimating the Population Mean with Missing Response

We propose new ensemble approaches to estimate the population mean for missing response data with fully observed auxiliary variables. We first compress the working models according to their categories through a weighted average, where the weights are proportional to the square of the least‐squares coefficients of model refitting. Based on the compressed values, we develop two ensemble frameworks, under which one is to adjust weights in the inverse probability weighting procedure and the other is built upon an additive structure by reformulating the augmented inverse probability weighting function. The asymptotic normality property is established for the proposed estimators through the theory of estimating functions with plugged‐in nuisance parameter estimates. Simulation studies show that the new proposals have substantial advantages over existing ones for small sample sizes, and an acquired immune deficiency syndrome data example is used for illustration.     

Nuclear risk perception,political efficacy,and Internet use for civic engagement in China

Nuclear power was recently reintroduced into China’s economic agenda. However, concerns have arisen as to how communities close to the sites of newly planned nuclear power plants react to the potential environmental and health risks. In a field study conducted in the proximity of the Yunxiao Nuclear Power Plant in Fujian province, it was discovered that a majority of the respondents perceived the project as having a certain level of risk. Nevertheless, online social networks were rarely used to seek relevant information, discuss benefits and threats, deliver concerns to decision-makers, or even to mobilize collective actions. Further investigation revealed a strong connection between the political efficacy of the respondents and their level of Internet use for civic engagement. The mechanisms underlying the formation of political efficacy are examined by relating the discourses of risk to their social contexts.     

An FPTAS for generalized absolute 1-center problem in vertex-weighted graphs

Given a vertex-weighted undirected connected graph \(G = (V, E, \ell , \rho )\), where each edge \(e \in E\) has a length \(\ell (e) > 0\) and each vertex \(v \in V\) has a weight \(\rho (v) > 0\), a subset \(T \subseteq V\) of vertices and a set S containing all the points on edges in a subset \(E' \subseteq E\) of edges, the generalized absolute 1-center problem (GA1CP), an extension of the classic vertex-weighted absolute 1-center problem (A1CP), asks to find a point from S such that the longest weighted shortest path distance in G from it to T is minimized. This paper presents a simple FPTAS for GA1CP by traversing the edges in \(E'\) using a positive real number as step size. The FPTAS takes \(O( |E| |V| + |V|^2 \log \log |V| + \frac{1}{\epsilon } |E'| |T| {\mathcal {R}})\) time, where \({\mathcal {R}}\) is an input parameter size of the problem instance, for any given \(\epsilon > 0\). For instances with a small input parameter size \({\mathcal {R}}\), applying the FPTAS with \(\epsilon = \Theta (1)\) to the classic vertex-weighted A1CP can produce a \((1 + \Theta (1))\)-approximation in at most O(|E| |V|) time when the distance matrix is known and \(O(|E| |V| + |V|^2 \log \log |V|)\) time when the distance matrix is unknown, which are smaller than Kariv and Hakimi’s \(O(|E| |V| \log |V|)\)-time algorithm and \(O(|E| |V| \log |V| + |V|^3)\)-time algorithm, respectively.     

信仰文化、俗世文化与先进文化

信仰文化、俗世文化与先进文化各有特定内涵、基本内容和主要特征,在文化光谱中它们各司其职,其要素水平和耦合方式决定文化先进程度.构建先进文化,必须整合信仰文化、俗世文化之精华,在多元文化背景下,将先进要素在马克思主义思想指导下,耦合成全球伦理、科学伦理基础上的高能文化.     

人力资本不平等与区域间经济差异

西部大开发政策的实施对区域间人力资本存量、结构的差异产生一定的影响。在西部大开发10周年背景下,通过分析人力资本结构对经济增长作用机制,运用教育基尼系数测算了我国31个省份1998～2008年的人力资本基尼系数,并利用各年度截面数据对其与人均GDP的关系进行实证检验,结果表明：我国各地区人均受教育年限不断提高,人力资本基尼系数逐渐下降,人力资本不平等性逐渐减弱,表明西部大开发对缩小地区间人力资本不平等性起到了积极的作用;人力资本基尼系数与地区经济增长之间存在强劲的负相关关系,人力资本基尼系数的变化将引起人均GDP更大幅度变化,地区间人力资本不平等性的差距是区域经济差距的重要原因。     

多重制度约束下的传媒组织转型——以M市新闻传媒集团为例

本文从宏观制度环境约束和微观行动选择相结合的视角,运用定性研究方法,以M市新闻传媒集团市场化改革为案例,分析特定时空条件下扮演政治、经济、社会多重角色的传媒组织,在多重制度约束下实现市场化组织转型的过程和动因。研究发现,面对持续的政治控制、崛起的市场机制和萌发的社会责任,在具有个人能力、魅力和社会资本的主要行动者的策动下,传媒组织通过宣传与经营的分离和自觉强化"党的喉舌"功能等举措,为市场化改革赢得合法性,通过跨行业、跨区域和跨媒体的产业经营和内部管理机制改革,提高经济效率,顺利地实现从事业单位到企业单位的市场化转型。     

消费者信息安全研究——基于重要报纸报道的内容分析

20世纪90年代以来,电子商务、CRM、数据库营销等技术手段不断应用到企业营销活动中,与之相应的,消费者的信息成为炙手可热的资源,被一些机构和个人有意泄漏或贩卖。本文通过对2002年至2009年5月的中国重要报纸报道进行内容分析后发现,消费者信息泄漏的主要内容包括身份信息、财产信息、健康信息和其他个人信息四项;信息泄漏的途径则主要通过购房链、购车链、求职链、就医链等链条和一些其他机构。针对这种状况,除了完善立法和提醒消费者加强防范外,还要强化企业的社会责任意识,以此构建消费者信息安全的防御体系。