论我国粮食生产与贸易保护政策的演变趋势

对粮食生产与贸易实行特殊保护 ,是各国政府普遍实行的一种特殊政策。但是 ,以国家干预为特点的粮食保护政策 ,必然会扭曲市场运行机制 ,削弱资源优化配置功能 ,这就要求建立符合我国国情和市场经济规律要求的粮食贸易与保护政策 ,以增强我国粮食的竞争力。     

The Nature and Effects of Violence against Child-Protection Social Workers: Providing Effective Support

This article examines the experiences and views of child-protectionsocial workers and managers in relation to the management ofviolence against child-protection social workers in a largecounty council’s Social Services Department. These findingsdemonstrate the importance of the role of managers and agencysupport systems in dealing with such matters. Questions areraised concerning the effects of interventions by child-protectionprofessionals with resistant and threatening parent service-users,and challenges some of the assumptions underlying the currentparadigm in child-protection work which demands an uncriticalview that working in partnership with parents is always in theinterests of children, and is always possible. The findingssuggest that in certain types of situations, workers’effectiveness can be compromised when carrying out their rolesin both supporting families and protecting children. They alsoillustrate the types of agency responses which professionalsand managers find helpful and unhelpful in response to parentalthreats and aggression. In particular, the importance of supervisionand support from managers is addressed, as are the implicationsof the findings for practice and agency support strategies forworkers. The relevance of the findings are also set out withinthe context of the requirements placed upon individual practitionersand agencies which employ social workers by the General SocialCare Council Codes of Conduct and Practice for Social Care Workersand their Employers.     

论矿难的国家赔偿责任

自2004年末以来,我国重特大煤矿安全事故频发,引起了社会各界对矿难的广泛关注。其中矿难赔偿系焦点问题之一,但综观相关研讨,大都仅限于煤矿企业的赔偿,国家赔偿则几无涉及。而矿难国家赔偿责任的确立,无论在理论上还是实践中均有其积极之意义。基于国家赔偿责任在本质上是一种特殊的民事责任,故在认定和实现的过程中不能仅仅依据《国家赔偿法》,亦理应遵循相关的民事法律规定。     

System abuse: towards a greater understanding from the perspectives of children and parents

The present article explores the concept of system abuse from the perspectives of children and parents. Four main ways in which the term has been used are highlighted and, with reference to the literature, the commonalities underlying the various uses of the term are explored. Reviewing the available evidence suggests that many families may become unnecessarily involved in the child protection system; this finding is discussed within the parameters of the current Section 17/Section 47 debate. Features of the investigation identified as particularly salient for children and parents include the initial phase of the investigation; investigative interviews and medical examinations; case conferences; social-worker/family interaction and the lack of follow-through services. Gaps in service provision when workers do not consider that abuse has occurred are also considered. Finally, pointers for practice during investigations are discussed in the light of this review     

Altruism and Market-Like Behavior: An Analysis of Willingness to Pay for Recycled Paper Products

The contrast between self-interested behavior guided by rational choice and altruistic behavior guided by normative considerations is a central theme in the social sciences. This study suggests that market and market-like behavior, the context where self-interest is expected to dominate, is in fact often motivated by altruism. This argument is tested by examining a willingness to pay measure, a surrogate for the market that is finding substantial use in analyses of public policy. In particular, the ability of the Schwartz model of altruism to explain willingness to pay for recycled products is examined. Findings indicate that even as the Schwartz model has explained many purely altruistic behaviors, it also can explain self-reported willingness to pay. While economists often have noted the importance of rational choice in even the most intimate of human decisions, this study notes the importance of normative altruism in even the most calculated.     

环境危机意识的培养与教育

分析了全球面临的环境危机及我国的资源环境现状与未来社会经济发展的要求之间的矛盾,论述了加强我国民众环境危机意识教育的作用和意义以及实施环境危机意识教育的措施和手段。     

COWORDS: a probabilistic model for multiple word clouds

Word clouds constitute one of the most popular statistical tools for the visual analysis of text documents because they provide users with a quick and intuitive understanding of the content. Despite their popularity for visualizing single documents, word clouds are not appropriate to compare different text documents. Independently generating word clouds for each document leads to configurations where the same word is typically located in widely different positions. This makes it very difficult to compare two or more word clouds. This paper introduces COWORDS, a new stochastic algorithm to create multiple word clouds, including one for each document. The shared words in multiple documents are placed in the same position in all clouds. Similar documents produce similar and compact clouds, making it easier to simultaneously compare and interpret several word clouds. The algorithm is based on a probability distribution in which the most probable configurations are those with a desirable visual aspect, such as a low value for the total distance between the words in all clouds. The algorithm output is a set of word clouds that are randomly selected from this probability distribution. The selection procedure uses a Markov chain Monte Carlo simulation method. We present several examples that illustrate the performance and visual results that can be obtained by our algorithm.     

HDDA: DataSifter: statistical obfuscation of electronic health records and other sensitive datasets

There are no practical and effective mechanisms to share high-dimensional data including sensitive information in various fields like health financial intelligence or socioeconomics without compromising either the utility of the data or exposing private personal or secure organizational information. Excessive scrambling or encoding of the information makes it less useful for modelling or analytical processing. Insufficient preprocessing may compromise sensitive information and introduce a substantial risk for re-identification of individuals by various stratification techniques. To address this problem, we developed a novel statistical obfuscation method (DataSifter) for on-the-fly de-identification of structured and unstructured sensitive high-dimensional data such as clinical data from electronic health records (EHR). DataSifter provides complete administrative control over the balance between risk of data re-identification and preservation of the data information. Simulation results suggest that DataSifter can provide privacy protection while maintaining data utility for different types of outcomes of interest. The application of DataSifter on a large autism dataset provides a realistic demonstration of its promise practical applications.     

中国现阶段环境约束下的适度经济增长率研究——基于废气排放量视角的分析

经济发展与环境污染的关系历来都是一对不可回避的矛盾,也是学术界研究的热点,国内外大多数学者都在考察人均GDP与环境污染的库兹涅茨曲线,但对于环境与经济增长率的关系却很少有人研究。首先建立环境变量与经济增长率关系的变参数状态空间模型,并将建立的状态空间模型转化成线性规划中的决策方程,之后应用参数区间估计和集合论两种方法,通过约束相应的变量及变量的系数来估计中国现阶段环境约束下的适度经济增长率。