利用长周期光纤光栅测量蔗糖溶液浓度的仿真研究

通过对长周期光纤光栅测量蔗糖溶液浓度的仿真研究,发现长周期光纤光栅谐振波长与10％到75％的蔗糖溶液浓度呈非线性关系,在70％处灵敏度较高,进一步研究发现在20％处呈现线性关系,但灵敏度较70％处低。     

稀土长余辉发光材料SrAl2O4：Eu2＋，Dy3＋的制备及性能研究

以硝酸铝和硝酸锶为原料,通过溶胶-凝胶法与微波法相结合制备SrAl2O4：Eu2＋,Dy2＋稀土长余辉发光材料．同时研究了烧结温度、硼酸的加入量以及激活剂铕和镝的比值等条件对SrAl2O4：Eu2＋,Dy3＋长余辉发光材料的发光性能的影响．结果表明：采用Hz作还原气氛,烧结温度为1200℃,H3BO3的加入量为6wt％,激活剂铕和镝的比值为1／2．0时,性能最佳．SrAl2O2：Eu2＋Dy3＋长余辉发光材料在水和光照条件下,发生水解反应,生成Al（OH）3白色沉淀和表面层的乳白色固体薄膜．     

情景记忆障碍检测在阿尔茨海默病早期诊断中的作用

阿尔茨海默病（ Alzheimer disease, AD）是最常见的一种老年性痴呆症,以进行性记忆丧失和认知功能障碍为临床特征。虽然越来越多的研究证实对于痴呆越早进行干预效果越好,但目前还没有一个能早期诊断AD的方法。情景记忆（ episodic memory, EM） 是AD最早的认知损害领域之一,文章就情景记忆障碍在阿尔茨海默病早期诊断中的作用作一综述。     

长距离输水工程调度与管理机制研究

以平山水源工程为例，研究长距离输水工程的调度与管理机制，提出长距离输水管线的管理与维护措施：健全组织机构，明确管理责任；建立监控系统，保障调度安全；加强日常维护，完善检修制度。     

建立森林生态效益补偿长效机制的探讨

从森林生态效益补偿具有公共性和长期性的特征出发，对其执行中所应建立的资金保障机制、资金运行机制及其立法保障进行了探讨，以期确保森林生态效益补偿制度稳定有效的实施。     

The long run,market power and retail pricing

The paper examines the existence of market power in the respective pork and poultry (white meat) meat markets in Austria by means of the Johansen cointegration technique. The existence of market power in pork retail pricing is revealed. Poultry retail pricing is, however, found to be competitive. The result for pork is attributed to tradition and to the high pre-EU border protection rates. The paper also revealed the versatility of the Johansen cointegration technique as a tool capable of analysing both competitive and imperfect market situations. The paper recommends meat policy to be product specific rather than holistic.First version received: March 2000/Final version received: May 2003The research on which this article is based began in 1995 at the Federal Institute of Agricultural Economics, Vienna, with the support of the Austrian Federal Ministry of Agriculture and Forestry. An earlier version of the paper was presented at the 264^th NFJ Seminar, Alnarp, Sweden, 1996. The author is grateful to Karl M. Ortner for the data and to Robert M. Kunst, Karl M. Ortner, Martin Wagner and seminar participants for useful comments on earlier drafts.     

我国上市公司管理层收购问题研究

本首先分析了当今的知识经济时代企业组织的新特征和公司治理理论面临的挑战。进而阐述了MBO对经理层的激励约束作用，指出MBO是上市公司的一种有效长期激励约束机制。最后说明了当前MBO操作存在的问题和对策。     

货币政策、企业生命周期与银行信用

以2006—2015年A股上市公司为样本,采用筛选出的1225家公司10年期的面板数据,通过构建固定效应模型研究货币政策、企业生命周期与银行信用三者之间的关系,结果显示：（1）不同生命周期阶段的企业拥有不同的银行信用,其中成长期企业拥有最多的银行信用,衰退期次之,成熟期末之;（2）货币政策对不同生命周期阶段的企业银行信用产生的影响不同,具体为,衰退期企业和成熟期企业受货币政策的影响比较大,成长期企业受货币政策的影响比较小。研究结论对处于不同生命周期阶段的企业在货币政策变动的情况下如何进行银行信用融资具有一定的启示意义。     

Tourists taking photographs: the long tail in tourists' perceived image of Barcelona

This study examines photographs taken by tourists of Barcelona in order to identify the perceived image of the city. Specifically, the study analyses 3100 photographs uploaded by tourist photographers on the social network Flickr. The method of analysis used was content analysis. The findings demonstrate that Barcelona's perceived image is dominated by a few very popular sights, but also contains a large number of new sights and spaces. These new elements are not of much individual value, but collectively account for a large volume and therefore have the capacity to expand the city's image. This is the long tail of Barcelona's tourist image, providing the city with a new image created by tourists themselves.