政府采购的资源配置效应分析

作为市场经济国家公共支出管理重要手段之一的政府采购，随着各国政府职能履行范围和作用方式的不断变化和全球化效应的进一步加深，对一国国内经济乃至世界经济的影响日益显示出其威力。本文将分两种情况：封闭条件和开放条件；两种模式：分散采购和集中采购；两个部门：公共部门和私人部门采探讨政府采购对资源配置的影响，从经济学的角度分析如何通过政府采购来提高政府资源配置的效率。     

ST公司资产重组扭亏效应分析

在比较成熟的市场经济中，资产重组的积极作用能够比较充分地发挥出来。在我国，资产重组的效应到底怎样，目前还存在不同的看法。本文通过对26家曾进行资产重组的ST公司进行分析，认为资产重组不等于上市公司的业绩改善，而只是为上市公司业绩改善提供了一种可能，与资产重组相比较，上市公司强化主业、完善机制、加强管理的努力，才是扭亏为盈的惟一出路。     

原子系统的信息熵

运用信息论的观点,借助于单原子系统的熵变机制,综观各种探测原子结构的手段,以期深刻理解信息熵的物理意义.     

The ‘Quality Myth’: Promoting and Hindering Conditions for Acquiring Research Funds

Research funding has been undergoing a shift from recurrent, stable funding to competitive funding of projects. The system rests on the assumption that the best proposals or the best researchers receive the resources, i.e., that quality is not only necessary but also sufficient to win a grant. A comparative study of the conditions of fund acquisition was conducted to test this assumption. Qualitative interviews with 45 German and 21 Australian Experimental physicists were conducted. Although the quality of a proposal and the reputation of a researcher are important prerequisites for a successful acquisition of funds, the success of a funding proposal depends on several factors that are not linked to quality and cannot even be controlled by scientists. Scientists used adaptation strategies and universities applied institutional measures to increase their chances of external funding, but with limited success. Under the described conditions, grant acquisition is based on a Matthew Effect by rewarding the richly funded researchers and hindering entry or continuous funding for others. For these reasons it must also be doubted that external funding per se is a useful performance indicator.     

局域磁杂质导致的自旋流

研究局域化磁性杂质引发的散射势对入射电子自旋取向的影响,该势可用Rashba哈密顿项表示.通过解薛定谔方程求得自旋空间的波函数,再由边界条件确定波函数的振幅,进而求出散射矩阵.应用buttiker理论,计算出通过磁性杂质引起的电流和自旋流,结果表明,在低温下,自旋流受电子库中所加磁场影响很小,而受费米能影响较大.     

盐城海岸带土地利用变化的生态环境效应研究

海岸带是全球环境变化最为敏感的地区之一,其土地利用变化可引起多种资源与生态过程的改变.随着人口的增加以及经济的发展,盐城海岸带土地利用变化不断加剧,耕地和水域是其变化的2个核心.文章分析了该区土地利用及其变化对土壤环境、水环境以及生物多样性的生态效应,分析表明,滩涂在合理农业土地利用方式下可使土壤达到淋盐增肥的效果;入海河道污染负荷成倍增加,居民工矿用地扩展是导致盐城海岸带水环境质量下降的主要原因;因滩涂开发利用使生境压力增大、景观破碎化程度增加,威胁盐城海岸带生物多样性.     

Before Breaking Bad News: Relationships Among Topic,Reasons for Sharing,Messenger Concerns,and the Reluctance to Share the News

Messengers are reluctant to reveal bad news, and this reluctance can hamper effective communication. With this investigation, we explore linkages among the topic of the news, messengers’ reasons for sharing, messenger concerns about sharing, the locus of the news, and whether these variables associate systematically with messenger reluctance to share the news. Retrospective self-reports (n = 330) revealed that bad news occurred in reliable topic categories, which in turn related to reasons for sharing, how extreme the news was perceived to be, and the concerns messengers had before sharing the bad news. Messengers reported more reluctance to share the news when they were also the locus of the news than when they were not, and they felt reluctance was greater when the topic was seen as more extreme. Theoretical implications and limitations are discussed.     

提高2012年南阳全国农运会效应的路径研究

体育赛事对举办城市产生的效应主要包括举办地体育、社会、文化、自然环境、旅游和经济发展等。通过近三届全国农运会对举办地产生的赛事效应分析,认为南阳市应以全国农运会为契机,把群众体育的发展、农运会文化遗产的开发与利用作为办赛的重点;应以体育旅游开发为主题,打好体育旅游大旗,树立南阳旅游品牌,实现农运会效应的可持续发展。     

论现代传媒对科学传播的影响

科学的有效传播是提高公众科学素养的最重要途径。现代传媒的发展速度超过了以往任何一种传媒形式，承担着更为有效的科学传播的责任。     

信息产业发展与我国产业结构升级

我国要加快实现工业化和现代化，就必须以信息化带动工业化，以信息产业作为主导产业，通过其自身的发展及对其他产业的扩散效应来实现产业结构的升级。优先发展信息产业，借此缩短工业化的时间，实现我国经济的跨越式发展。