空间OLAP 技术研究

针对决策支持系统中空间数据可视化应用趋势,研究基于空间数据仓库的一种决策分析 工具———在线分析处理,通过改进空间数据立方体的物化视图选择方法,并进行了实例分析, 验证该方法的有效性和优越性,更好地解决空间OLAP 响应时间延迟问题. 进而扩展空间OLAP 应用模型和模式,实现更加完备、灵活的空间OLAP 操作功能.     

Policy instrument affordances: a framework for analysis

The present study uses the concept of technological efficacy derived from ecological psychology and design studies to offer an alternative way of analyzing how policy instruments affect change. Reasoning from this, the paper outlines a framework for analyzing policy instruments in terms of their affordances. We define affordances as the means through which an instrument exerts influence on its intended target audience. Using this approach, we contend that policy instruments may be analyzed as interfaces that organize social relations and create structures of opportunity and/or restrict possibilities for action. We argue that explicating the pathways through which instruments afford or constrain action is a central task for policy analysis. Our proposed framework of analysis builds on the idea that instruments yield effects by facilitating action and learning. We further contend that the actions that an instrument can facilitate or inhibit are determined by specific affordance modalities of the instrument in conjunction with contingencies of the actor and the policy environment. Examples from research policy are used to illustrate some of these effects.     

Optimal acceptance sampling for modules F and F1 of the European Measuring Instruments Directive

ABSTRACT

Acceptance sampling plans offered by ISO 2859-1 are far from optimal under the conditions for statistical verification in modules F and F1 as prescribed by Annex II of the Measuring Instruments Directive (MID) 2014/32/EU, resulting in sample sizes that are larger than necessary. An optimised single-sampling scheme is derived, both for large lots using the binomial distribution and for finite-sized lots using the exact hypergeometric distribution, resulting in smaller sample sizes that are economically more efficient while offering the full statistical protection required by the MID.     

中国商品流通现代化的模糊综合评价研究

完善了商品流通现代化指标体系,并运用模糊综合法将商品流通现代化指标转换成了指数。研究发现商品流通现代化水平与其区域位置、总体经济实力密切相关,且受到产业结构的影响。同时,通过基于指数的聚类分析得到如下结论:"率先发展型区域"要抓住历史机遇,培养创新型人才,保持领先地位;"积极追赶型区域"要发挥地理优势,打破省之间、行业和部门之间、所有制之间的界限,积极参与各种区域经济合作;"流通欠发达型区域"要进一步推进和实施西部大开发战略,推进物流现代化。     

华尔兹与维也纳华尔兹舞的比较分析

华尔兹与维也纳华尔兹舞舞蹈的音乐节奏、技术难度和运动强度相差较大，但是它们之间的关系密切，两者的基本和艺术风格都非常相似，彼此起着互相影响、互相促进的作用。     

新世纪以来山药蛋派研究述评

新世纪以来,山药蛋派的研究整体而言,不是学术界的热点话题,但仍有一些有价值的学术成果出现。在流派研究方面,苏春生、席杨、傅书华、张恒等或对流派作全方位的评述,或提出卓有见地的观点。作家研究方面除赵树理外则更为贫乏,但段崇轩的马烽研究值得注意。着眼于将来,山药蛋派研究仍然有颇多言说空间。     

李白人格精神现代价值论略

李白的诗歌作品是展示其人格精神的重要载体。终生不渝地坚持信念理想、关心社会且勇于批判现实、积极进取、坚持个性独立、真诚热爱大自然等是李白人格精神的基本表现。这些精神具有超越时空的鲜明特征，对促进当今社会、文化事业的发展具有重要意义。     

Issues in Estimating New Keynesian Phillips Curves in the Presence of Unknown Structural Change

Many articles which have estimated models with forward looking expectations have reported that the magnitude of the coefficients of the expectations term is very large when compared with the effects coming from past dynamics. This has sometimes been regarded as implausible and led to the feeling that the expectations coefficient is biased upwards. A relatively general argument that has been advanced is that the bias could be due to structural changes in the means of the variables entering the structural equation. An alternative explanation is that the bias comes from weak instruments. In this article, we investigate the issue of upward bias in the estimated coefficients of the expectations variable based on a model where we can see what causes the breaks and how to control for them. We conclude that weak instruments are the most likely cause of any bias and note that structural change can affect the quality of instruments. We also look at some empirical work in Castle et al. (2014 Castle, J. L., Doornik, J. A., Hendry, D. F., Nymoen, R. (2014). Misspecification testing: non-invariance of expectations models of inflation. Econometric Reviews 33:5–6, 553–574, doi:10.1080/07474938.2013.825137[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]) on the new Kaynesian Phillips curve (NYPC) in the Euro Area and U.S. assessing whether the smaller coefficient on expectations that Castle et al. (2014 Castle, J. L., Doornik, J. A., Hendry, D. F., Nymoen, R. (2014). Misspecification testing: non-invariance of expectations models of inflation. Econometric Reviews 33:5–6, 553–574, doi:10.1080/07474938.2013.825137[Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]) highlight is due to structural change. Our conclusion is that it is not. Instead it comes from their addition of variables to the NKPC. After allowing for the fact that there are weak instruments in the estimated re-specified model, it would seem that the forward coefficient estimate is actually quite high rather than low.     

分析马克思主义的方法论基础探析

分析马克思主义作为西方马克思主义研究的一种新范式而出现,实现了马克思主义研究的方法论的新突破.西方社会科学中流行的个人主义解释模式构成其方法论的学术背景.约翰·埃尔斯特构建出分析马克思主义方法论的框架--以方法论个人主义为方法论原则,以意向性解释尤其是理性选择理论、博弈论为具体解释方法.围绕方法论个人主义和理性选择理论的争论逐步凸显出分析马克思主义研究方法论的全貌.只有运用辩证法精神,才能恰当处理方法论个人主义与方法论集体主义的关系、理性选择理论与功能解释的关系,才能准确评判与把握分析马克思主义的方法论基础.     

透视双语教学

主要介绍双语教学的概念与本质,并依据社会语言学的基本原理对现行的英汉双语教学现象进行讨论与分析。同时,从双语教学现象中反思现行的英语教学。