从"超女"现象看构建和谐社会中媒体功能的发挥

"超女"借助于媒体,不仅为平民观众提供了娱乐狂欢,而且满足了人们多方面的心理需要.开放式海选所体现出的公平竞争精神、观众手机短信投票方式所蕴涵的和谐社会应具有的民主精神、超级女声大赛所喷发的社会活力,与构建社会主义和谐社会的目标是有联系的.和谐社会不仅需要媒体的积极参与和热情投入,更需要媒体用理性来把握、引导、发挥.传媒应该把握住这个生机勃勃时代的主旋律,去寻找那些真正能打动我们内心的人物和品质,去发现那些散发出理想主义芬芳的场景和故事,从而引发人们的感动,提升每个人的精神境界.     

极左思潮对中国社会主义现代化建设的影响

现代化进程本质上就是马克思主义进一步中国化的过程,只有坚持把马克思主义普遍原理与现代化建设的具体实际相结合,而且要结合好,才能完成这一艰巨任务,否则就会导致理论和实践上的迷误.极左思潮的产生、形成和发展,其根源正是由于我们党在探索社会主义现代化建设道路之初,没有解决好马克思主义中国化的问题,没有把马克思主义普遍原理与社会主义现代化建设的具体实际结合好,使其对现代化建设产生了很大的干扰,甚至破坏.     

交易活跃性与交易成本动态关系研究

交易成本和市场活跃性是流动性相互联系的两个重要方面,已往研究多基于横截面分析研究两者的静态关系,而未考虑两者的动态相互作用。用久期,交易量来度量市场活跃程度,买卖价差度量交易成本,提出了基于超高频数据研究交易活跃程度和交易成本动态关系的系统模型。利用中国股市的样本数据对模型进行了实证研究,并从信息揭示的角度对实证结果给出了理论解释。结果表明交易活跃性和交易成本之间存在着动态相互影响,监管部门应该采取措施降低交易成本,增加市场的活跃性,防止出现市场低迷和流动性缺乏的恶性循环。     

Imposing the Regular Ultra Passum law in DEA models

Recently there has been some discussion in the literature concerning the nature of scale properties in the Data Envelopment Model (DEA). It has been argued that DEA may not be able to provide reliable estimates of the optimal scale size. We argue in this paper that DEA is well suited to estimate optimal scale size, if DEA is augmented with two additional maintained hypotheses which imply that the DEA-frontier is consistent with smooth curves along rays in input and in output space that obey the Regular Ultra Passum (RUP) law, i.e. monotonically decreasing scale elasticities. A necessary condition for a smooth curve passing through all vertices to obey the RUP-law is presented. If this condition is satisfied then upper and lower bounds for the marginal product at each vertex are presented. It is shown that any set of feasible marginal products will correspond to a smooth curve passing through all points with a monotonic decreasing scale elasticity. The proof is constructive in the sense that an estimator of the curve is provided with the desired properties. A typical DEA based return to scale analysis simply reports whether or not a DMU is at the optimal scale based on point estimates of scale efficiency. A contribution of this paper is that we provide a method which allows us to determine in what interval optimal scale is located.     

鱼肉肠的超高压杀菌工艺研究

以鱼肉肠为研究对象考察了处理压力、保压时间以及协同温度对微生物的影响,并采用正交试验优化了鱼肉肠的杀菌工艺条件.通过数据分析得出杀菌的最优化工艺条件为：操作压力400MPa、保压时间5min、协同温度30℃.