Transverse momentum of charged hadrons observed in deep inelastic muon scattering

The transverse momenta of charged hadrons produced in high energy muon-proton scattering have been studied. The average squared transverse momentum 〈p²_⊥〉 shows a strong dependence on z = E_h/v characteristic of intrinsic momentum effects and a significant rise as a function of s = W². The W², q², x and z dependences of the data are compared with the predictions of a perturbative QCD model.     

Exact penalties and sufficient conditions for optimality in nonsmooth optimization

Under certain sufficient conditions for strict local optimality in a mathematical program, it is well known that a number of non-differentiable penalty functions are locally exact. With sufficient conditions involving the contingent derivative, it is shown that this local exactness is valid for programs whose objective and constraint functions need not be differentiable or even continuous. The author is grateful to the referees for their helpful comments.     

论凡·高自画像的艺术符号

文章通过基本的符号学原理来解析凡.高的自画像,所要用到的原理包括能指与所指,深层结构与表层结构,艺术的冷信息,符号—功能体,艺术符号的自指性和易率符号原理;分别从凡高自画像的构图、背景、道具、笔触、神态五个方面进行作品分析。     

新疆奎赛公路工程中索赔管理的体会

结合工程实例,从强化索赔意识、提高合同管理人员素质、寻求索赔机会、掌握索赔谈判技巧等方面介绍了公路工程施工中的索赔管理几个要点.     

信用攸关的利率互换的定价

在约化方法的框架下,针对实务界出现的一种新型信用衍生产品--信用攸关的利率互换(credit contingentinterest rate swap,CCIRS),以偏微分方程(partial differentialequation,PDE)为方法,利用对冲原理建立了定价模型.之后分别利用显式和隐式差分对模型进行数...     

集值优化问题强有效元的二阶最优性条件

在实赋范线性空间中考虑集值优化问题的强有效性, 借助集值映射的二阶切导数, 利用基泛函及强有效元的性质, 给出了目标函数为近似锥次类凸时无约束集值优化问题的二阶导数型最优性的必要条件, 并在锥 凸假设下给出了充分条件.     

Can PC format CV reveal the true value of environmental resources in developing countries？ A laboratory experiment in China

This is a report on payment card format contingent valuation prediction validity in China based on the individual level comparison in a world heritage site evaluation. An evaluation index system of indicators is set up according to the consistency of the individual willingness to pay as well as the mean （or median）, the positive （or negative） proportion in the hypothetical context and those in the actual donation context. We took the conservation of a combined world heritage site Wuyi Mountain in China as the case study. By one-to-one individual level comparison, we demonstrate that people usually overstate their paying intention and overestimate their paying abilities, and the hypothetical individual WTP, mean, median, positive proportion and negative proportion are all significantly different from those in the actual context in this case. However, although the relationship between WTP and socioeconomic characteristics in the hypothetical context was not consistent with that in the actual situation, the survey still demonstrated the maximum support proportion and the least opponent proportion to the project when it was carried out. So we can conclude that in this case PC format CV is a poor indicator, partly owning to its free binding. We also find that when a person decides whether to pay （intention）, he or she is more affected by his/her knowledge structure and social duty; when he/she really decides on how much he/she will pay, income becomes the most important factor.     

共同延误工期下索赔事件的研究

共同延误工期索赔在工程实践中普遍存在,而且其影响因素多、牵涉面广.因此,共同延误的责任分摊和责任定量化对工期索赔非常重要.针对由于共同延误引起的工期延误,各责任方难以确定和各责任方责任比例难以定量处理的问题,通过比较和分析不利于承包商原则、初始责任人原则和影响比例划分原则的工期索赔原则,进而分析网络计划和动态分析计算方法.最后,提出动态责任分析计算法,即以关键路线为标准,通过解析业主、承包商、不可抗力同时引起的工期延误特点,建立共同延误工期索赔模型,对工期延误责任归属进行判定,计算各责任方的工期索赔时间.     

多维分数次Black-Scholes模型中欧式未定权的定价

讨论了具有任意Hurst参数的多维分数次Black-Scholes模型中欧式未定权益的定价,首先得到了未定权益在到期前任意时刻的分数次风险中性定价,然后求出了欧式未定权益在单资产多噪声、多资产单噪声、多资产多噪声等情形下的定价公式.