The True Cost-of-Living Index With Changing Preferences

This article investigates the theoretical and empirical properties of a true cost-of-living index under conditions of changing preferences. A family of true indexes is defined based on the notion of the current utility function. A particular index, based on the previous period's utility level, is then defined. Given this definition, a true cost-of-living index is computed based on a quadratic expenditure system estimated with quarterly data from 1960–1981. For empirical purposes, changes in preferences are represented by the linear habit formation hypothesis. This index is then compared with Paasche and Laspeyres indexes. The true cost-of-living index grows somewhat faster than either the Paasche or Laspeyres index. It also displays considerably more variability.     

非单调二元非线性算子方程组的迭代求解

利用锥与半序理论和混合单调算子理论 ,讨论 Banach空间中非单调二元非线性算子方程组解的存在性与唯一性 ,并给出收敛于方程组解的迭代序列和误差估计 ,改进和推广了混合单调算子方程和一元算子方程的某些相应结果 .     

The Clinician's Voice and the Limits of Bioethics

The bioethics movement has long promulgated a model of ‘principled decision‐making’ in which ethical dilemmas and conflicts between various rights, interests, and ethical principles are central. In many respects this movement has had a laudatory impact on health care and on health professionals, but we will also argue that the bioethical model of ethical analysis has important limitations. The model's theoretical orientation is discontinuous with the training and skills of health professionals, the manner in which health professionals conceptualise and solve problems that arise in a clinical setting, and the time constraints inherent in most clinical situations. As such, the model is not readily applicable to much of the day‐to‐day work of clinicians and, in particular, to the routine ethical questions and situations that arise in caring for patients. What we suggest is that the bioethical model does not take into account that health care professionals, as part of their daily work, encounter and manage difficult, often conflictual situations and that they do so by bringing to bear conceptual frameworks and therapeutic techniques that have, embedded within them, the ethical values and goals of their own fields, as well as established ways of dealing with problems and addressing competing priorities. We further argue that from a systems perspective, the bioethical model and the pragmatic, problem‐focused ethical decision‐making of clinicians operate on different levels of complexity; whereas the former is especially appropriate for situations that resist consensus or that raise significant issues of public policy, the latter serves as an effective framework in less difficult or complex situations that can be moved effectively toward consensus and closure.     

The witch doctor's pharmacist

This article explores the state of, and prospects for, training and development within the South African maritime industry, and is based on a series of in-depth interviews conducted with employers, the principal union, training institutions and regulatory bodies. Findings are that a deeply embedded racial division of labour persists, that there is a serious shortage of employment opportunities, and that training and certification remain fragmented. The article concludes that the quality of training provided is of a high standard, but there is a vital need for a coherent overall policy linking initial training with employment opportunities, ongoing skills development and the promotion of greater equality.     

中国个人所得税制度的思考

针对中国个人所得税在税制模式的选择、税率的设计以及征收管理等方面都存在的缺陷,分析了现行个人所得税制存在的主要问题,提出了改变税制模式、重新设计税率、调整减免税项目以及完善个人所得税的征管制度等改革设想,为中国个人所得税改革提供思路。     

关于地区经济发展潜力指标体系的思考

社会经济量化研究是目前中国社会经济研究的主要方式，是符合当前国际社会经济研究发展潮流的，也是大势所趋。社会经济量化研究这一方式所借助的研究手段主要包含两个方面：一是建立科学、可行的指标体系；二是量化分析的方法或模型的应用。研究要取得成功，首先要有合理、科学的指标体系，在此基础上方能展开各种模型的应用，以达到对社会经济现象的新的认识。只有通过对地区经济发展从概念到实际内容的定性分析，并结合实际指标理论以及实现指标的可能性，方能对地区经济发展潜力评价指标体系以及一般评价指标体系的建立进行比较充分和完整的讨论。     

多变量过程自组织学习控制新方法及其实时实现

本文论述一种利用相联存储器系统的多变量自组织学习控制新方法及其实时实现。在线学习包含两个步骤:被控过程的动态输入—输出特性用仿视感控器的方式逐步存入一个相联存储器中,用来作为预测过程模型;依靠一种特殊的输出预测算法,利用预测过程模型并通过单步超前性能指标最优化来规划控制策略,经教练后的控制策略以同样的方式存入第二个相联存储器中。文中提出了一种特殊的采样和更新方法。通过仿真和实时应用证明了所述学习控制新方法的可行性。     

和谐文化的结构层次与价值体系

文化是一个不断演化发展的生命过程,考察文化,离不开对文化结构和文化层次的分析.广义的文化包含物质的、政治的、精神的、和谐的四种不同的形态.和谐文化价值体系是三个层面的有机统一体:一是物质文化、政治文化、精神文化等不同形态文化的内在和谐及相互和谐;二是和谐的理念和价值体系;三是和谐理念和价值观念引导社会物质生活、政治生活、精神生活三者协调发展所达到的和谐状态,也就是我们理想的和谐社会.     

An adaptive bayebsian solution to the control peoble1 for linear control systems

In this paper, a Bayesian procedure to solve the control problem in Linear Control Systems , when the precision Matrices of the obstsrvaiional and systems errors are unknown, is proposed. Prior information on those matrices is required, A numerical example illustrates the procedure applied to models Which contain bivariate observations and bivariate state vectors.     

非定常控制系统的绝对稳定性

从研究中间变量σ情况和判断控制系统解的界及k类函数法来讨论控制系统零解的绝对稳定,并给出了判断非线性非定常系统零解绝对稳定的一种新方法.