农民工工资支付法治化问题研究——基于对《保障农民工工资支付条例》的解读

《保障农民工工资支付条例》(以下简称《条例》)是我国当前面对农民工工资支付出现的新问题制定的一套具有规范化、权威性和有效性的法律保障机制。从农民工工资支付法治化保障机制的制度特点来看,《条例》的主体责任更加明确化,处罚方式强调规范化,监管过程具备严密化,监管主体呈现多元化。《条例》采取全程协同监管手段消除“灰色治理”的“梗阻”,用“法律红线”落实并明确各方的法律主体责任,以细化规定的方式打通工资支付的“绿色通道”,从而能够保障《条例》的有效落实。为了更好地保障农民工的切身利益,《条例》主要从实践逻辑层面上落实法治化保障措施:明确不同监管主体在监督检查领域中的职能定位,对用人单位实行严格的资格认定与法律责任制,在监管领域中始终关注劳有所得的民生问题。     

Modeling Finite‐Time Failure Probabilities in Risk Analysis Applications

In this article, we introduce a framework for analyzing the risk of systems failure based on estimating the failure probability. The latter is defined as the probability that a certain risk process, characterizing the operations of a system, reaches a possibly time‐dependent critical risk level within a finite‐time interval. Under general assumptions, we define two dually connected models for the risk process and derive explicit expressions for the failure probability and also the joint probability of the time of the occurrence of failure and the excess of the risk process over the risk level. We illustrate how these probabilistic models and results can be successfully applied in several important areas of risk analysis, among which are systems reliability, inventory management, flood control via dam management, infectious disease spread, and financial insolvency. Numerical illustrations are also presented.     

基于FLOTRAN的燕尾形导轨气浮平台结构设计

闭式燕尾形导轨是常见的静压气浮导轨结构形式之一,其燕尾角度将直接影响导轨的承载能力,为保证设计的燕尾形导轨能满足工作要求,本文通过建立燕尾夹角在55°~70°范围变化的气膜有限元模型,以承载力和刚度作为主要性能指标,对导轨承载能力进行分析.通过分析发现:导轨垂直方向总承载力随着燕尾夹角θ的增大而增大.研究结果表明燕尾夹角θ=66°时,单边导轨垂直方向的承载力为87.26N,刚度为33.69N/μm,能较好地满足承载和工作要求.     

位移边界对2D-FGM板热应力影响研究

考虑不同的位移边界条件,建立了常物性2D-FGM板研究模型,并采用有限元法,得到其冷却瞬态热应力场分布图形。位移边界条件对常物性2D-FGM平面区域冷却瞬态热应力分布影响颇大,在简支和一端固定情况下,2D-FGM板自由边界上的热应力σ_x=0;两端固定情况下,其左右两边界均形成上中下三个应力聚集,应力分布形状和数值都发生了巨大的变化;将四周均设置呈固定约束后,热应力数值增长幅度较两端固定情况时更为明显。此结果为该材料的设计、制备提供了准确的理论计算依据。     

Robust Bayesian prediction under a general linear-exponential posterior risk function and its application in finite population

We consider robust Bayesian prediction of a function of unobserved data based on observed data under an asymmetric loss function. Under a general linear-exponential posterior risk function, the posterior regret gamma-minimax (PRGM), conditional gamma-minimax (CGM), and most stable (MS) predictors are obtained when the prior distribution belongs to a general class of prior distributions. We use this general form to find the PRGM, CGM, and MS predictors of a general linear combination of the finite population values under LINEX loss function on the basis of two classes of priors in a normal model. Also, under the general ε-contamination class of prior distributions, the PRGM predictor of a general linear combination of the finite population values is obtained. Finally, we provide a real-life example to predict a finite population mean and compare the estimated risk and risk bias of the obtained predictors under the LINEX loss function by a simulation study.     

论中国历史上的北方民族政权:以辽、西夏、金、元四朝为重点

古代北方民族,常常形成实力强大的集团,对中国历史的全局产生重大影响。在国家政治组织层面上,征服王朝既采纳了一些汉法,又掺入了不少原先政权的制度因素,这样的结合导致了真正的君主专制。女真人政权的合法性得到境内大多数汉族知识阶层人士的认同,蒙古人的元朝则有些逊色。辽、西夏、金、元等王朝非汉族的统治,并没有改变汉地社会、经济、文化的基本面貌,它们的影响主要是政治上的。     

Mixture inverse Gaussian for unobserved heterogeneity in the autoregressive conditional duration model

In this paper, we assume that the duration of a process has two different intrinsic components or phases which are independent. The first is the time it takes for a trade to be initiated in the market (for example, the time during which agents obtain knowledge about the market in which they are operating and accumulate information, which is coherent with Brownian motion) and the second is the subsequent time required for the trade to develop into a complete duration. Of course, if the first time is zero then the trade is initiated immediately and no initial knowledge is required. If we assume a specific compound Bernoulli distribution for the first time and an inverse Gaussian distribution for the second, the resulting convolution model has a mixture of an inverse Gaussian distribution with its reciprocal, which allows us to specify and test the unobserved heterogeneity in the autoregressive conditional duration (ACD) model.

Our proposals make it possible not only to capture various density shapes of the durations but also easily to accommodate the behaviour of the tail of the distribution and the non monotonic hazard function. The proposed model is easy to fit and characterizes the behaviour of the conditional durations reasonably well in terms of statistical criteria based on point and density forecasts.     

论公务员职业道德建设的法制化路径

改革开放以来，我国公务员面临着来自新的复杂环境和新的工作要求所带来的多方面挑战。近几年，公务员职业道德方面的问题日益凸显，形式主义、官僚主义等问题突出，弄虚作假、贪污腐败之风盛行。这些问题严重影响了民生与安定，阻碍了民主政治建设的进程。而将公务员职业道德建设法制化，利用法与道德的相互关系，通过国家强制力与配套机构来保障法律实施，对于我国公务员职业道德建设会是成效显著而意义非凡的。     

无时间性的真无限：黑格尔哲学初期的一个关键问题

1803年前，黑格尔对时间问题缺乏关注。相形之下，在1807年《精神现象学》中，他已将时间看作哲学的重要主题。为什么黑格尔从1795到1802年曾对时间问题无动于衷。在1795年左右，黑格尔主要关注爱的无限性问题。在其法兰克福时期和耶拿初期，他虽然看到了时间性的客观世界的地位，但却并未对此加以强调，而只是强调了主体性的爱与客体性的世界的统一的绝对自身。1802年，通过研究雅各比和康德关于时间问题的争论，黑格尔刻意歪曲了雅各比哲学中的时间问题的重要性，以自己的方式，将时间性的有限存在者问题与物自身问题连接进行考察，从而以一种哲学性的真无限问题策略性地取代了时间问题。这一策略运用与黑格尔原初性的哲学体系理解直接相关，由此，黑格尔将雅各比哲学与康德哲学一并归类为反思性哲学，并对之加以“超越”。     

基于ANSYS的压力容器表面凹坑缺陷安全评定分析

采用通用有限元程序ANSYS建立了移动式压力容器筒体外壁表面凹坑（轴向和周向）的有限元模型。结合筒体表面凹坑的应力理论计算，研究探讨了在恒定内压下，筒体表面凹坑缺陷处的应力分布与凹坑几何尺寸之间的关系。以第三强度理论作为仿真终止判据，获取凹坑各几何参量的阈值，利用MATLAB对阈值进行最小二乘拟合，绘制出凹坑缺陷的安全评估参考曲线。拟合结果表明：轴向和周向凹坑对筒体局部结构强度的影响不同，对应的安全评估参考曲线存在区别。