宽带无线接入网中的RS编译码硬件解决方案

提出了欧氏算法和IDFT相结合的RS码流式解码方案,并在FPGA芯片上予以实现。计算机仿真和实测表明,该方案在GF(28)的符号速率可达50MHz以上,最大延时为640ns,满足了高速宽带无线接入网中抗干扰编译码的需求。     

The evolving interpretations of customers in higher education: empowering the elusive

Students within higher education are increasingly referred to as customers. And there have been increasing pressures for academics to respond to them as such. Universities, especially their management, have been adopting the vocabulary of quality management systems that may be more commonplace in industry. In recent decades, there has been a fierce debate among academics as to whether this approach is appropriate in the academic sector, and whether students are customers, consumers, clients, etc. This paper explores the debate and the central ideas that have informed it. Despite the largely semantic debate over the definition of customers, universities have attempted to empower the multiple stakeholders, using a variety of tools. The paper goes on to discuss how the nature of students is evolving with the move toward widening access, and how the concepts and tools surrounding quality systems must also evolve.     

多伦多大学学生心理咨询与南京财经大学学生心理咨询的比较研究

在我国，对于大学生心理咨询的研究与实践，时间并不长，对于如何进行大学生心理咨询，仍处于探索阶段。该文以加拿大多伦多大学和南京财经大学的心理咨询为例，通过分析比较各自的特点及不同点，提出进一步加强南京财经大学大学生心理咨询工作的基本路径。     

跨国饭店市场进入方式选择:风险与收益的权衡

跨国饭店市场进入方式的选择是在众多影响因素的约束下,跨国饭店集团和东道国通过对各自面临的风险与收益的权衡,以及最终双方讨价还价的博弈结果.这一结果会随着投资的区域环境和跨国饭店自身情况而表现出空间上的差异,并随双方力量的对比变化而做动态调整.双方在决策时应兼顾对方利益所在,力争取得双赢.     

上市公司市盈率的微观影响因素分析

市盈率指标具有重要作用，影响我国上市公司市盈率的微观因素除了股利支付率、公司成长性和公司风险的一般因素外，还需要考虑流通股比重、盈利能力等。本文基于这样的考虑，利用面板数据对沪深2001～2004年A股上市公司数据进行了实证研究，分析表明各财务指标对市盈率的影响关系基本同假设一致，但有些关系不显著。意外地，净利润增长率与市盈率负相关，需要结合我国具体情况来认识市盈率，作出合理的解释。     

A Microeconomic Approach to Diffusion Models For Stock Prices

This paper studies a class of diffusion models for stock prices derived by a microeconomic approach. We consider discrete-time processes resulting from a market equilibrium and then apply an invariance principle to obtain a continuous-time model. the resulting process is an Ornstein-Uhlenbeck process in a random environment, and we analyze its qualitative behavior. In particular, we provide simple criteria for the stability or instability of the corresponding stock price model, and we give explicit formulae for the invariant distributions in the recurrent case.     

基于横向型滤波器的多用户检测器

本文将横向型滤波器算法应用于CDMA系统之中，从而实现多用户检测的功能。分析和仿真结果表明，该类多用户检测器具有较好的抗“远近效应”能力和较为简单的结构，具有广泛的应用前景。     

The impact of the Uruguay Round on tariff escalation in agricultural products

Tariff escalation (i.e. higher tariffs on processed agricultural products than on their input commodities) has been one of the obstacles for developing countries in their efforts to establish processing industries for exports. This article assesses the changes in tariff escalation resulting from the Uruguay Round (UR) tariff concessions, examining the agricultural import markets of EU, Japan and the US. The approach consisted of comparing the base and bound tariffs, as listed in the UR tariff schedules, of actual input/output processing relationships, taking also specific tariffs into account. Three main conclusions can be drawn. First, more than half of the commodity pairs have positive tariff wedges (escalating tariffs), about 10 per cent have no tariff wedges (input and output tariffs are equal) and the remaining one-third of the commodity pairs have negative tariff wedges (de-escalating tariffs). These numbers are roughly the same for both base and bound tariff wedges. Second, as a result of the UR tariff concessions more than 80 per cent of the tariff wedges have decreased (in absolute values, i.e. positive wedges have become less positive and negative wedges have become less negative). Convergence towards zero is therefore a common feature. Third, after the full implementation of the UR tariff concessions, high levels of nominal tariff escalation will still remain for a number of commodity pairs, highest in Japan and lowest in US. Considering only the positive tariff wedges, these will average 17 per cent after the implementation of the UR (down from 23 per cent of the base years). Finally, the study has certain methodological shortcomings, and a degree of caution is in order for countries contemplating export diversification and investing in valued-added industries. There are well known problems with “water in the tariffs” and the difference between applied and bound rates of duty that are common to all studies on this subject. In addition, a number of factors that are beyond the scope of this study should also be taken into account when export diversification is considered. These relate, inter alia, to the competitiveness of the export commodities or industries in question, availability of appropriate technologies and infrastructure, product standards, technical regulations and a host of consumer preference issues having to do with brand recognition as well as product characteristics.     

The Limit Distribution of the Bootstrap for the Unit Root Test Statistic when the Residuals are Dependent

In this article, the unit root test for the AR(1) model with dependent residuals is considered. We adopt a bootstrap procedure to bootstrap the residuals with bootstrap sample size m less than the size n of the original sample. Under the assumptions that m → ∞ and m/n → 0, the convergence in probability of the bootstrap distribution function is established. Research supported by National Natural Science Foundation of China (No. 10471126)     

基于IP的3G服务质量控制及实现

第三代移动通信系统 (3G)的第二阶段是采用IP传送网 ,服务质量 (QoS)是极其重要的问题。在讨论基于IP的 3G中QoS体系结构、业务QoS要求基础上 ,重点研究QoS控制原理和区分服务的实现 ,并得出一些有参考价值的结论。