水库地区路基的防护研究

当水库蓄水及运行过程中产生的库岸再造危及库区公路安全时，应对库岸或路基进行防护加固，在研究三峡、水口等水库塌岸历史、现状及预测的基础上，分析了岩质、土质和岩土混合岸坡的破坏方式、库岸再造类型，认为路基或库岸防护设计应遵循滑坡与塌岸综合治理、库岸防治与开发利用相结合、分时期分段落分水位区防护等原则，详细阐述了在不同库岸地质结构及库岸再造类型中采用的防护措施，研究了砌石坡式防护、防护林带、格构锚固、挡土墙、抗滑桩、喷锚等工程防护结构类型。     

取消农业税对农村牧区产生的影响

随着国家农业税全部免征政策的推行,农民税负大大减轻,但农民的其他隐性负担相应增加.同时,取消农业税对县乡财政收入产生影响,对农村经济也将产生深远影响.本文对巴彦淖尔市取消农业税后对农村牧区产生的影响进行了一些论述.     

Will Swedish and Dutch drug policy converge? The role of theory

Sweden and The Netherlands are often referred to as the archetypes of prohibition and harm reduction, respectively. Both nations have, however, recently adopted political measures that fit well in the other country's model. But they have also taken steps that reflect traditional thinking. Are we witnessing the initial stages of convergence or are recent developments better interpreted as adjustments? This article addresses these questions by comparing Swedish and Dutch theoretical understandings of ‘the drug problem’. Goals and practices are illuminated in the context of underlying theory, raising the question: Can substantial convergence be achieved without significant prior changes in theoretical perceptions? It is found that the theoretical understandings of the two paradigms do not mix easily, complicating attempts at convergence. Moreover, both countries have invested a great deal of political prestige in their respective models, further exacerbating the problem. A conceivable way to circumvent these difficulties is suggested.     

实践思维方式及其影响--《关于费尔巴哈的提纲》的语境解读

实践思维方式的确立是对人类本体论思维方式的根本否定,也是解决现代西方哲学两大对立派别矛盾的科学方法。马克思运用实践思维方式创立了马克思主义,其后继者以实践思维方式为指导,推动了社会主义革命和建设向前发展。     

A regression-based smoothing spline Monte Carlo algorithm for pricing American options in discrete time

American options in discrete time can be priced by solving optimal stopping problems. This can be done by computing so-called continuation values, which we represent as regression functions defined recursively by using the continuation values of the next time step. We use Monte Carlo to generate data, and then we apply smoothing spline regression estimates to estimate the continuation values from these data. All parameters of the estimate are chosen data dependent. We present results concerning consistency and the estimates’ rate of convergence.     

我国房地产市场财富效应的实证分析

本文应用格兰杰因果关系检验和协整分析方法,对我国房地产市场的财富效应作了实证分析。实证结果表明,我国房地产市场不具有财富效应而仅具有替代效应。     

上海股市周日历效应及长期记忆研究

运用ARMA-GARCH-M、EGARCH-M及FIGARCH-M模型对上海股市A股指数收益率及其波动性的周日历效应进行联合检验;另外还检验了成交量的周日历效应。研究结果表明:(1)风险溢价系数为正值,上海股市的风险传递机制正在发挥作用;(2)股市收益率序列存在显著的周日历效应,并且其异常收益并非来自风险溢价;(3)波动性过程同时存在周日历效应和长期记忆效应;(4)股市交易量同时存在周日历效应和长期记忆效应。最后利用混合分布假说进行了解释,信息可能是周日历效应形成的重要原因。     

战略阻绝效应对战略联盟决策的影响分析

本文将对战略联盟决策的分析纳入SCP范式,并通过构造在位者和潜在进入者之间的三阶段博弈模型来分析战略阻绝效应对战略联盟决策的影响.本文认为:在位者的合适的战略联盟行为具有战略阻绝效应,可以通过改变潜在进入者的进入预期、影响进入者的行为并促进在位者的支付,这种支付的改变将拓宽战略联盟的决策空间,在位者将在更高的联盟成本或更低的固定边际成本下降程度上建立战略联盟.     

A simple estimator for a shared frailty regression model

Summary. We propose a simple estimation procedure for a proportional hazards frailty regression model for clustered survival data in which the dependence is generated by a positive stable distribution. Inferences for the frailty parameter can be obtained by using output from Cox regression analyses. The computational burden is substantially less than that of the other approaches to estimation. The large sample behaviour of the estimator is studied and simulations show that the approximations are appropriate for use with realistic sample sizes. The methods are motivated by studies of familial associations in the natural history of diseases. Their practical utility is illustrated with sib pair data from Beaver Dam, Wisconsin.     

影响企业内部控制效果的三个重要因素

企业管理者出于企业长远利益考虑,必然对如何提高内部控制效果予以充分关注。通常来说,内部控制效果可分为制度效果和实际效果。在现实经济生活中,影响它们的因素很多,比较重要的有内部控制制度、员工素质和公司治理结构等。为了提高内部控制效果,企业应协调内部控制制度与员工素质,建立、健全公司治理结构。