Optional decomposition and Lagrange multipliers

Let be the set of equivalent martingale measures for a given process , and let be a process which is a local supermartingale with respect to any measure in . The optional decomposition theorem for states that there exists a predictable integrand such that the difference is a decreasing process. In this paper we give a new proof which uses techniques from stochastic calculus rather than functional analysis, and which removes any boundedness assumption.     

A note on pricing interest rate derivatives when forward LIBOR rates are lognormal

We derive the closed form pricing formulae for contracts written on zero coupon bonds for the lognormal forward LIBOR rates. The method is purely probabilistic in contrast with the earlier results obtained by Miltersen et al. (1997).     

Entry and Component Pricing in Regulated Markets

This paper discusses work on computable models of entry into regulated markets. Cournot, Stackelberg and Fringe entry are considered for the case where the incumbent operator‘s profitability is regulated and component pricing influences the desirability of entry. The simulation results illustrate that welfare optimal component pricing can be highly sensitive to model specification (behavioural assumptions about agents, the nature of competition, the extent of product differentiation etc.) and that no welfare ranking of simple component pricing rules (such as marginal cost, average cost, opportunity cost or efficient component price) exists. In addition, the welfare desirability of entry is seen to be sensitive to the choice of welfare benchmark for comparison     

先简支后连续结构梁桥施工技术

近年来我国的交通建设发展迅速,特别是高速公路建设方面成绩斐然。道路工程离不开桥梁建设,先简支后连续体系技术以其在施工中的优势条件获得了广泛的应用。本文主要论述先简支后连续桥梁技术施工中一些关键点。     

兼并与收购的价值创造:并购交易与并购后整合

企业在并购交易本身和并购后的整合都可以实现价值创造。并购交易本身的价值创造来源于横向并购交易所产生的市场势力、纵向交易中所降低的交易费用、混合并购交易所实现的产业效应和绕开进入壁垒以及多元化、预期效应等;并购后整合的价值创造源自于其所产生的协同效应,即管理、经营、财务及无形资产协同效应,这些都会促进企业价值的提升与创造。     

秦山核电基地周围环境生物样品中锶-90放射性水平监测

自1992年,浙江省辐射环境监测站对秦山核电基地外围环境辐射水平进行了连续的监督性监测。1992年-2011年6月间,秦山核电基地周围环境生物样品中90Sr平均含量的监测结果如下：猪肉、羊肉中分别为0.060、0.112Bq/kg(鲜重),猪骨、羊骨中分别为0.662、0.823 Bq/kg(鲜重),牛奶中为0.025 Bq/L,鱼、鱼骨、虾类、螺蛳样品中分别为0.228、0.503、2.640、1.800 Bq/kg(鲜重),大米、叶菜、萝卜中分别为0.06 Bq/kg(干重)、0.16 Bq/kg(鲜重)、0.12Bq/kg(鲜重),茶叶、松针中分别为1.3 Bq/kg(干重)、3.2 Bq/kg(鲜重)。与基地运行前本底值和对照点监测值相比,各类生物中90Sr含量均在正常范围内。     

Income effects and indeterminacy in a calibrated one-sector growth model

This note analyzes how the indeterminacy of competitive equilibrium in one-sector growth models depends on the magnitude of the households' income effect on the demand for leisure. Since I am interested in quantitatively characterizing regions of indeterminacy, I use the Jaimovich and Rebelo [N. Jaimovich, S. Rebelo, Can news about the future drive the business cycle? Mimeo, Northwestern University, 2007] preferences that span a wide range of income effect values. I find that indeterminacy can occur for levels of aggregate-returns-to-scale that are well within recent empirical estimates. For these regions of indeterminacy, the model, when driven solely by sunspot shocks, generates second-moment properties that are consistent with the U.S. data at the business cycle frequency.     

体育活动对大学生心理状况的影响

通过调查沧州某高专院校学生体育活动状况与心理健康状况,发现实验前后大学生经常参加体育锻炼与不参加体育锻炼的心理健康水平存在着显著性差异;不同体育活动项目各因子总体间不存在显著性差异。由此可见,体育活动是提高大学生心理健康水平的有效途径,在深入研究的基础上,提出了加强高校体育对大学生进行心理健康教育的合理化建议。     

“90后”大学生《基础》课教学中善与美的研究

"90后"大学生在思想观念、价值取向、人生态度上都有着鲜明的时代特点,本文结合他们的特点,从教师的角度、教学内容的角度、学生学习的角度三方面入手,将人性中的善与美展示于《基础》课的课堂教学活动中,使学生善与美的人性得到挖掘与提升,从而塑造完整和谐的"90"后大学生形象。     

后金融危机时代高新区协调发展研究——以广西高新区协调发展为例

实现协调可持续发展是我国经济发展的必然趋势。后金融危机时代,高新区必须打破“条块分割”、“各自为政”的局限,转向“大产业的协调发展”,增强发展的可持续性。文章认为,高新区的协调发展必须树立大产业发展理念,科学合理统筹规划;建立合作共享机制,增强协调发展能力;以产业集群为发展导向,提高协调发展水平;培育和发展龙头企业,强化协调发展的带动力。