重型机械变速箱锁销式同步器常见故障模式的原因分析及解决方法

目前,国内中、重卡多采用主副箱结合的机械式变速箱,副箱使用锁销式同步器。用于高低档转换的锁销式同步器,适合于空间较大、需要传递大扭矩的副箱,其性能直接影响变速器能否顺利实现换档。通过理论分析、故障件拆解、实车跟踪等方法,文章分析了重型变速器锁销式同步器在使用过程中常见的故障模式,产生故障的原因,并提出了相应的解决办法。     

VaR准确性检验的贝叶斯方法

文章对VaR准确性检验的失败检验法进行了分析,提出了一种新的失败检验法,即贝叶斯检验法。并与传统的正态近似法和Kupiec检验法进行了比较,说明了贝叶斯检验法的合理之处。     

摊铺机故障之二三谈

文章对摊铺机故障原因以及故障的排除进行了分析与探讨.     

Memoryless Reigns of the “Sons of Heaven”

Human lifetimes have increasing failure rates; as people age (beyond early childhood) they are more likely to die. Viewing the succession of Chinese Emperors as a statistical ensemble we show that, unlike lifetimes, their reigns ceased at a constant rate for over two millennia, unaffected by elapsed time. In fact reign lengths of the “Sons of Heaven”, as the Chinese Emperors were known, followed a memoryless exponential distribution with a 10-year half-life. Becoming emperor not only influenced the duration of remaining life, but length of rule was independent of age at ascent. We propose an explanation for the observed exponentiality using asymptotic results from the theory of stationary stochastic processes.     

从语用失误看高职学生英语语用能力的培养

语用能力的培养对于高职英语教学至关重要。为了提高高职学生的语用能力,以学生的语用失误为切入点,分析语用失误的类型及原因,提出培养学生语用能力的教学方法。     

企业并购估值中的威斯通模型扩展研究

威斯通模型是企业并购估值贴现现金流模型中具有代表性的研究。在威斯通固定增长模型的基础上,建立了考虑未来经营失败概率的估值模型;对威斯通超常增长而后无增长模型进行了修正,探讨了企业在超常增长期采取不同投资策略对其价值的影响,建立了一个更为简明的估值模型,并给出隐含超常增长期限的一种计算方法。     

An Adversarial Ethic for Business: or When Sun-Tzu Met the Stakeholder

In the economic literature on the firm, especially in the transaction–cost tradition, a sharp distinction is drawn between so-called “market transactions” and “administered transactions.” This distinction is of enormous importance for business ethics, since market transactions are governed by the competitive logic of the market, whereas administered transactions are subject to the cooperative norms that govern collective action in a bureaucracy. The widespread failure to distinguish between these two types of transactions, and thus to distinguish between adversarial and non-adversarial relations, has led many business ethicists to develop a “uniform” moral code. Yet in market transactions, the checks and balances built into the system of commercial exchange are such as to permit more instrumental forms of behavior. In administered transactions, by contrast, these checks and balances are absent, and thus the institutional context calls for much greater exercise of moral restraint. In this paper, I begin the task of developing an adversarial ethic for business. According to this view, the competitive environment licenses a greater range of “self-interested” behavior, but also imposes its own constraints on the strategies that firms may adopt in the pursuit of their interests. Joseph Heath is Associate Professor in the Department of Philosophy and the Centre for Ethics at the University of Toronto. He is the author of three books: Communicative Action and Rational Choice (MIT Press, 2001), The Efficient Society (Penguin, 2001), and with Andrew Potter. The Rebel Sell (HarperCollins, 2004). His research focuses on practical rationality, normative economics, and critical theory.     

LESSONS FROM THE FINANCIAL CRISIS: THE INTERNATIONAL DIMENSION

The current financial crisis has arisen as a result of entrepreneurial and business error rather than because of inappropriate incentives within the private sector. However, government failure has exacerbated the problem. The case for responding to government failure by greater international co-ordination of banking regulation is weak. The IMF is particularly ill-suited for this job.     

担保失灵与保证保险：制度演化视野下的微距观察

本文对“担保失灵”背景下保险机构开展贷款保证保险业务的一个案例进行了微距观察,基于银保双方权责承担的实际进行了博弈演进分析,提出了银保可重复合作博弈的满足条件,探讨了有关市场主体可选择的定位思路。     

钢筋混凝土板在内爆荷载作用下的反应分析

本文对内爆荷载作用下钢筋混凝土板进行数值模拟,并对不同炸药量和爆炸距离作用下产生的爆炸峰值压力及脉冲压力大小进行数值模拟计算,然后分析板破坏过程及破坏形式,给出安全等级评估,从而为板的防爆设计加固提供一些有益的参考。