多管齐下,加强服务业统计工作

服务业作为国民经济的重要组成部分,其发展水平不仅是衡量生产社会化程度和市场经济发展水平的重要标志,也是反映全面小康社会进程的重要指标之一。但由于服务业统计起步较晚,现行的统计方法制度对于客观反映服务业的发展规模、活动成果还存在较大的局限性,服务业统计与核算也成为统计工作中相对薄弱的环节。一、当前服务业统计工作的矛盾和困难(一)思想认识、重视程度、组织协调不到位服务业统计是一项全社会、全行业的综合性统计,涉及范围之广、工作难度之大、工作任务之重,超乎想象。一产和二产统计经历了多年的努力已趋于完善,但三产统…     

行政权的行使与民事权利的保护

行政权与民事权利的有效实现有着密切的关系。行政权的行使一方面可以保障民事权利,为民事权利的实现提供服务;另一方面也可能由于其所具有的扩张性、强制性,不可避免地会侵入私权领域,对民事权利产生一定的侵害。因此,必颂对行政权的行使范围、内容和方式进行严格的控制,充分发挥行政权对民事权利的保障作用,克服行政权对民事权利的消极影响。     

简论高校体育教师应具备的素质

本文作者通过调查等研究 ,分析得出这样一个结论 :2 1世纪初高校体育教师必须做到 :具备高尚的道德情操、较高的政治思想素质、广博的科学文化知识 ,掌握现代化教学手段 ,更新教学观念和教学方法 ,热爱学生 ,体魄健美等素质     

扩大内需应立足于民生改善

针对中央出台的扩大内需政策,联系金融危机中国内外市场经济运行实际,我们认为扩大内需必须立足于民生,增加居民就业、工薪收入和财产性收入,增强居民的消费信心并着重提升农村居民和低收入阶层的消费率,正确运用金融手段促进信用消费;同时还要通过公共产品和公共服务的改善而志及民生,扩大公共消费比重,增加社会福利,使中央的内需刺激激励政策落实为惠民富民政策.     

频带分析方法在我国景气周期波动中的应用

摘　　要:本文介绍了国外最近提出的基于频带分析的景气指标选择方法。本文首先利用带通滤波分离出我国实际GDP增长率的循环要素并把它作为基准指标,然后利用文中介绍的频带分析方法选择一致指标。在选择一致指标时发现,利用频带分析方法选择的固定资产投资指标,在时域上却未被入选。这表明选择指标时频带选择方法比时域选择方法选择范围更广。本文还分别基于频带方法和时域方法构造一致合成指数,这两者都能够较好地拟合GDP增长率的波动情况,但使用频带方法得到的结果略好一些     

人口增长的Logistic模型及其应用研究

]相对于其他预测模型而言 ,L ogistic模型解决了对增长率变动时的人口发展过程的模拟问题 ,特别适宜于模拟人口发展速度递减、逐渐趋于零增长时的情况 ,适合于计划生育工作比较稳定、抓得比较紧的地区。但本模型缺乏人口转换为负增长地区的预测能力 ,而且计算的人口极值是相对的     

我国钢铁产业重组路径分析

在国家钢铁产业政策的指引下,我国钢铁产业正进入重组并购期.钢铁企业应当选择何种稳健的重组路径?做大之后,如何做优做强?重组之后,如何避免貌合神离,尽快走向水乳交融?这是当前我国钢铁产业重组过程中亟待破解的一道难题.     

Upper bounds of proper connection number of graphs

A total weighting of a graph G is a mapping \(\phi \) that assigns a weight to each vertex and each edge of G. The vertex-sum of \(v \in V(G)\) with respect to \(\phi \) is \(S_{\phi }(v)=\sum _{e\in E(v)}\phi (e)+\phi (v)\). A total weighting is proper if adjacent vertices have distinct vertex-sums. A graph \(G=(V,E)\) is called \((k,k')\)-choosable if the following is true: If each vertex x is assigned a set L(x) of k real numbers, and each edge e is assigned a set L(e) of \(k'\) real numbers, then there is a proper total weighting \(\phi \) with \(\phi (y)\in L(y)\) for any \(y \in V \cup E\). In this paper, we prove that for any graph \(G\ne K_1\), the Mycielski graph of G is (1,4)-choosable. Moreover, we give some sufficient conditions for the Mycielski graph of G to be (1,3)-choosable. In particular, our result implies that if G is a complete bipartite graph, a complete graph, a tree, a subcubic graph, a fan, a wheel, a Halin graph, or a grid, then the Mycielski graph of G is (1,3)-choosable.     

Integrating Entropy‐Based Naïve Bayes and GIS for Spatial Evaluation of Flood Hazard

Regional flood risk caused by intensive rainfall under extreme climate conditions has increasingly attracted global attention. Mapping and evaluation of flood hazard are vital parts in flood risk assessment. This study develops an integrated framework for estimating spatial likelihood of flood hazard by coupling weighted naïve Bayes (WNB), geographic information system, and remote sensing. The north part of Fitzroy River Basin in Queensland, Australia, was selected as a case study site. The environmental indices, including extreme rainfall, evapotranspiration, net‐water index, soil water retention, elevation, slope, drainage proximity, and density, were generated from spatial data representing climate, soil, vegetation, hydrology, and topography. These indices were weighted using the statistics‐based entropy method. The weighted indices were input into the WNB‐based model to delineate a regional flood risk map that indicates the likelihood of flood occurrence. The resultant map was validated by the maximum inundation extent extracted from moderate resolution imaging spectroradiometer (MODIS) imagery. The evaluation results, including mapping and evaluation of the distribution of flood hazard, are helpful in guiding flood inundation disaster responses for the region. The novel approach presented consists of weighted grid data, image‐based sampling and validation, cell‐by‐cell probability inferring and spatial mapping. It is superior to an existing spatial naive Bayes (NB) method for regional flood hazard assessment. It can also be extended to other likelihood‐related environmental hazard studies.     

我国上市公司的实证研究：股权结构和高层梯队与公司绩效的关系

分析了股权结构和高层梯队对公司绩效的影响并进行了实证研究。股权结构与公司绩效的实证结果显示,流通股对公司绩效有显著负面影响,而法人股则与之呈弱的正相关关系。在国有股权控股的企业中,股权一定程度上的集中对公司是有利的,且政府直接控股比间接控股更有利于企业的整体价值。在论证高层梯队与公司绩效关系上,从团队的传记性特征方面作了实证分析,初步得出了公司绩效与高层梯队平均年龄和平均受教育状况正相关,而与年龄和教育背景的差异性呈负相关关系这一结论。此外,在不同股权结构下,高层梯队对公司绩效影响具有差异性。