深基坑变形影响因子分析及预测方法研究

影响基坑变形的因子有很多，有主要因子和次要因子。根据实际工程经验以及相关资料，在较为全面地总结所有影响基坑变形因子的基础上，结合层次分析法，筛选出主要影响因子，建立一定的量化标准。将影响因子作为输入层，构建基于主要影响因子的BP神经网络。结合天津市中国铁建国际城1D地块深基坑工程，选出围护结构发生明显变形的各时间段，建立17×106的训练数据，采用黄金分割法对隐含层的节点数进行筛选，以4 m，8 m，12 m，16 m处的变形数据为目标层进行训练和仿真。最后，对其它测斜点的变形进行预测，精度满足要求，验证了这种影响因子选择和样本选择方法的有效性，对基坑变形预测有一定的应用指导意义。     

族群认同和国家认同的断裂与冲突——马来西亚华人穆斯林身份转换的现象和本质

马来西亚一部分华人选择信仰伊斯兰教,加入马来族群,这种身份转换从表面看是经济利益驱动所致,即他们希望借助族群身份的转换享受国家给予土著的优惠政策;然而,我们的调查研究发现,这种转换实际上呈现出一种族群认同和国家认同的断裂和冲突。一方面这些马来西亚华人已经加入信仰伊斯兰教的土著族群,一方面他们又与土著不同,这个悖论揭示出马来西亚华人穆斯林身份转换的目的并非单纯的基于经济因素的考量,也是为了追求社会公正和人格尊严。     

Audit committee and internal audit and the quality of earnings: empirical evidence from Spanish companies

Corporate scandals and failures such as Enron, WorldCom, etc. were highly catastrophic and had a terrible effect on stakeholders. The pressure of globalisation and the intense competition have lead to organisations encouraging good corporate governance. Organisations have to promote transparency and accountability of financial information. As Gramling et al. (J Account Lit 23:194–244, 2004) argued there are four important mechanisms of corporate governance include boards of directors, audit committees (among others) and internal and external audit functions. However, this paper will focus on the relationship between two corporate governance mechanisms (audit committee and internal audit function). Thus, our purpose is to analyse the relation between characteristics of the audit committee and internal audit function and earnings management measured as abnormal accruals to test the quality of financial statements. We hypothesise that the association between the effectiveness of the audit committee and the presence of an internal audit function and its relationship with this committee would indicate less opportunity for management to manipulate earnings. Using a sample of 108 non-financial Spanish companies that traded on the Madrid Stock Exchange between 2003 and 2006 (432 observations), we have found that the size and number of meetings of the audit committee had a significant negative association with earnings manipulations. Also, our results suggest that a negative relation between having an internal audit function and earnings management.     

中国城市化与环境质量研究

文章利用1995～2005年中国省级的工业污染数据对两种不同的观点进行了检验。结果发现,随着中国城市化水平的不断提高,工业污染会经历一个先上升后下降的倒U形路径。研究结果支持了城市化最终有利于城市环境质量改善的观点。城市化过程中工业污染得以集中,治污部门自身存在的递增规模收益使得污染物能在更高的集中水平上得到处理。因此,集中治理污染是提高城市环境质量的一个有效途径。     

试论物理学方法教育在物理学教学中的地位和作用

教学实践告诉我们,传授知识固然重要,而掌握方法则更为重要。在中专物理教学中实施物理学方法教育,对全面提高学生素质,培养适应社会需求的跨世纪人才是十分必要的。这也是当前中专物理教学改革、发展的需要。     

Bivariate distributions with second kind beta conditionals

In this paper the most general bivariate distributions with second kind beta conditionals is fully characterized. This family is closed under inversions and the conditional moments are shown to be rational functions of the conditioned variable. Two subfamilies of dependent distributions is shown to have second kind beta marginals too. Finally, as a particular case, the most general bivariate distribution with second kind Pareto conditionals is characterized.     

从二分法到三分法:基本权利体系的重构

一般认为,两种基本权利体系,即自然法理论为基础的基本权利体系和社会学理论为基础的基本权利体系.但是基于"自由权-社会权"二分法在现代社会面临的困境,本文试图以功能为中心对基本权利体系进行"三分法"的重新构建,即防御权、受益权和保护权.     

扎实推进青少年基础理论研究的深入和细化——第五届全国青少年研究基础理论研讨暨青少年研究协同创新研讨会综述

青少年研究不同于其他有着明确学科界定和体系的学术领域,这导致了其队伍接续和学术推进的困境.面对青年研究的学科地位问题、青年研究作为一种多学科体系的主要的研究方法和今后的方法论走向问题、如何促进青年研究的跨界融合和推进青年研究的协同创新问题,都需要我们深入研究.     

Justice as social representation: diffusion and differential positioning / La justicia como representación social: difusión y posicionamientos diferenciales

The aim of this paper is to analyse the relationship between the diffusion process of social representations of justice by the press and their appropriation by readers. Two simultaneous cross-sectional studies were carried out. Study 1 analysed the meaning and the frequency of the word justice in the most important newspaper in Buenos Aires. The results indicate that the representation of justice has a retributive and institutional meaning. Study 2 investigated university students’ social representations of justice (N = 404) through a word association technique. The results showed that the central core of social representation has a retributive and institutional meaning, similar to the representations diffused by the most important newspaper. Nevertheless, significant differences were found with regard to the value attached to justice depending on the newspaper that the participants claimed to read. We can conclude that there is a mutual constitutive circular movement between the social representation of justice diffused by the newspapers and university students’ social representations. Moreover, the differences identified in the way justice was evaluated in the peripheral elements might express the existence of different positionings related to a hegemonic social representation.     

Migration Policy and Development in Chile

Current and prospective migration law and policy in Chile does not adequately incorporate the causes, content, and consequences of international migration to and from Chile. We describe and examine migration in‐flows, out‐flows, migration‐related policies, and how those policies drive, and are driven by, notions of development in Chile. We explore contradictions in Chilean nascent migration policy currently under legislative review. We argue that it is imperative that migration, migration policy, and their relationship to development be discussed inclusively and transparently and be explicitly incorporated into the Chilean government's nascent migration and development legal policies and frameworks.