VDSL数字用户环路接入及其关键技术

本文首先介绍了VDSL的体系结构，然后就实现VDSL接入的关键技术如线路编码技术，以及复用技术和回波抵消技术等相关技术进行了分析，最后指出了VDSL的发展现状和前景。     

Incentive compatibility constraints and dynamic programming in continuous time

This paper is devoted to the study of infinite horizon continuous time optimal control problems with incentive compatibility constraints that arise in many economic problems, for instance in defining the second best Pareto optimum for the joint exploitation of a common resource, as in Benhabib and Radner [Benhabib, J., Radner, R., 1992. The joint exploitation of a productive asset: a game theoretic approach. Economic Theory, 2: 155–190]. An incentive compatibility constraint is a constraint on the continuation of the payoff function at every time. We prove that the dynamic programming principle holds, the value function is a viscosity solution of the associated Hamilton–Jacobi–Bellman (HJB) equation, and that it is the minimal supersolution satisfying certain boundary conditions. When the incentive compatibility constraint only depends on the present value of the state variable, we prove existence of optimal strategies, and we show that the problem is equivalent to a state constraints problem in an endogenous state region which depends on the data of the problem. Some economic examples are analyzed.     

论新型商标的法律保护

新型商标作为我国现行商标法新增的保护种类,与传统的平面商标在保护理由和权利内容方面并无二致,但将新型商标作为商标注册的客体,则会出现以往在平面商标保护中不曾有过的法律问题,需要在今后的立法中加以完善。     

合谋激励与国有商业银行改革

作为一个典型的企业组织,商业银行面临一个多重代理问题,代理人合谋是团队道德风险的主要形式。本文利用多重代理的理论分析框架和大量事实证明,国有商业银行合谋问题非常严重。文章最后从反合谋角度提出国有商业银行改革的若干建议,包括建立合格股东和董事会把公司的经营管理权交给出资人和出资人的代表、实行组织机构精简与分拆上市(而非总体上市)、强化规则和股东权力并弱化总行和分行自由处置权、引入期权激励大幅提高银行管理层收入、银行内部组织结构更扁平化并适当授权给分行、建立提高员工参与程度的机制等。     

提升新建本科院校教学管理人员的职业能力

新建本科院校教学管理队伍的建设普遍滞后于教师队伍的建设,必须采取有效措施提升教学管理人员的职业能力,以提高教学管理水平。先从教学管理人员职业能力的内涵入手,进一步分析了新建本科院校教学管理人员现状和提升其职业能力的必要性,最后从定岗定编、提高教学管理人员的入门门槛、加强教学管理人员的职业观教育和加强职业能力后续的开发等...     

深水应答器定位、导航技术研究

声学定位技术的发展速度非常快,其应用也越来越广泛。当前大多海洋工程,如海洋油气开发、深海矿藏资源调查、海底光缆管线路由调查与维修等,需要声学定位系统（acousticpositionhagsystern）对水下拖体进行导舷定位,如水下遥控机器人ROV（remotelyop-eratedvehicle）、水下无人及其人UUV（umxtannedunderwatervehiCie）、水下自动机人AUV（autonomousunderwatervehicle）、声纳设备的水下拖鱼（towfish）等。本文就声学定位导航系统的发展现状、声学定位系统的原理、分类、不同类别的优绕点以及系统的技术发展等进行简单的研完。     

Equilibrium transformations and the Revenue Equivalence Theorem

I develop a method that transforms an equilibrium strategy profile from one auction to another. The method is constructive and does not require complicated computation. This provides a new approach to revenue equivalence and extends the theorem to domains where it had not previously been known, in particular to simultaneous multiple object auctions with complete information and to auction environments having correlated private values and common values.     

Sequential point estimation of the powers of a normal scale parameter

We consider the sequential point estimation problem of the powers of a normal scale parameter σ^r with r≠ 0 when the loss function is squared error plus linear cost. It is shown that the regret due to using our fully sequential procedure in ignorance of σ is asymptotically minimized for estimating σ⁻². We also propose a bias-corrected procedure to reduce the risk and show that the larger the distance between r and −2 is, the more effective our bias-corrected procedure is. Received August 2000     

Marketing retirement—or staying on the job

Financial packages provide the most common incentive to meet the legal requirement that retirement be voluntary. However, managers have other tools to encourage retirement or encourage staying on the job—within legal constraints and consistent with current health insurance changes that may make pre-65 retirement more desirable. In using these tools, managers must consider demographic realities that offer a large cohort available to replace retirees. To assist managers, a qualitative study among human resource experts probed how companies decide between encouraging retirement and encouraging staying on the job and also how each is accomplished to maintain a workforce best matched to job requirements. Suggestions for marketing retirement include starting early to encourage saving so that employees can afford to retire and improving the retirement ‘product’ by flexible alternatives to full-time work, including self-employment. Suggestions for keeping employees on the job include tailoring schedules and rewards to the preferences and needs of individuals who might otherwise retire.     

Second‐hand clothing consumption: a cross‐cultural comparison between American and Chinese young consumers

There has been an enormous increase in the economic power and global scope of the second‐hand clothing trade since the early 1990s. Young consumers are a major driver behind the growth of the second‐hand clothing industry in the US. While the stigma of buying second‐hand clothing is fading in the western countries, little is known about second‐hand clothing consumption in the Asian countries. The purpose of this study is to empirically investigate young consumers' behaviours towards second‐hand clothing from a cross‐cultural perspective in the US and Chinese contexts. Results of this study indicated significant differences in young consumers' second‐hand clothing consumption behaviour between the two countries in the following aspects: past purchase experience, perceived values and concerns, perceived subjective norm and future purchase intention.