正交多载波调制(OFDM)技术及其应用

本文首先介绍了正交多载波调制（OFDM）技术适用于高速数据传输的原理,着重讨论了OFDM基于FFT算法在基带实现多载波调制的原理和OFDM中的同步问题,最后对OFDM在宽带无线数据传输中的应用作了初步展望。     

Hotel efficiency: A bootstrapped metafrontier approach

This paper introduces the metafrontier concept to account for the environmental and technological differences between various hotels groups. The interesting feature of the model is that it ensures that heterogeneous hotels are compared based on one homogenous technology. We test the model using a panel data sample of 78 Taiwanese hotels. The results clearly indicate that the size, ownership, and classification of a particular hotel have a significant impact on its efficiency. More implications of the results are provided.     

Identifying changes and trends in Hong Kong outbound tourism

Despite the numerous research endeavors aimed at investigating tourists’ preferences and motivations, it remains very difficult for practitioners to utilize the results of traditional association rule mining methods in tourism management. This research presents a new approach that extends the capability of the association rules technique to contrast targeted association rules with the aim of capturing the changes and trends in outbound tourism. Using datasets collected from five large-scale domestic tourism surveys of Hong Kong residents on outbound pleasure travel, both positive and negative contrasts are identified, thus enabling practitioners and policymakers to make appropriate decisions and develop more appropriate tourism products.     

省域环境技术效率空间视角分析

通过构建环境污染综合指数,本文首先采用SBM非期望产出模型测度了我国29个省（市）2000—2009年环境技术效率。在此基础上运用探索性空间数据分析,结果发现省域间环境技术效率存在显著的空间依赖性,其自相关性已不容忽视。通过进一步利用空间面板数据模型对其影响因素进行实证分析后的研究结果表明：一个地区的环境技术效率与其所处位置及周边环境密切相关,并且受到邻近省份结构性差异误差冲击,这体现为各省份在经济发展水平、FDI、对外开放度和治理投资额等空间影响因素的差异。经济发展水平、外商直接投资和对外开放度均显著提升了各省份环境技术效率,而产业结构、环境治理投资额与环境技术效率负相关,环境治理投资效果并不显著。     

广西区域经济差距变化与原因研究

本文主要采用基尼指数度量了广西各地区经济差距的状况及变化趋势,分析结果表明广西的地区经济差距在缓慢扩大,但比全国的地区经济差距要小很多。本文进一步用1998～2008年广西各地市多个指标的数据建立面板数据模型进行计量分析,研究结果表明,人均产出增长率与城市化率、投资率和非农产业比重正相关,而与财政支出占GDP的比重负相关,这些因素的综合作用导致了广西区域经济差距的变化。     

我国各省区市金融发展的经济增长效应分析——基于面板数据的时变趋势与区域特征分析

基于31个省区市1994-2005年的经济金融面板数据的实证分析发现.金融规模扩张、结构优化、效率提升确实有助于促进经济增长,且效率提升比规模扩张更有助于促进地区经济增长.金融发展的经济增长效应存在着区域差异,且受各省区市的地区性基础或禀赋因素的影响较大.随着金融体制改革的推进,各地区金融发展对经济发展的适应性逐步增强,但仍受到金融体制的约束,需要进一步深化改革,加快发展.为此,要充分发挥中央政府主导金融制度供给与创新、地方政府主导当地金融生态建设和市场主导金融资源配置的基础性作用,将统筹区域金融协调发展与部分省区市金融率先发展有机统一起来.     

新巴塞尔资本协议下操作风险资本计算方法剖析

为了使监管资本对操作风险具有更高的敏感性,对商业银行资本金进行精确计量并使之与银行潜在经济风险相匹配是新巴塞尔资本协议的主旨。本文对新协议中关于操作风险资本金计算的理论依据和计算方法进行了剖析,有助于建立我国商业银行内部风险管理模型。近年来我国商业银行业也开始了关于操作风险的量化和管理,2004年中国工商银行首次出台了操作风险管理框架,这标志着我国商业银行操作风险管理进入实质阶段。     

高密度电法在地基塌陷区勘察中的应用

通过高密度电法快速采集地电断面结构信息，准确反映不良地质体的二维分布情况。为查明地基塌陷的诱发原因和地基处理提供了依据。通过实例证明该方法工作效率高、信息量大及在实际应用中的良好效果。     

What's in a broken promissory obligation? Developing and testing a multiple component form measure of psychological contract breach

While the literature has suggested the possibility of breach being composed of multiple facets, no previous study has investigated this possibility empirically. This study examined the factor structure of typical component forms in order to develop a multiple component form measure of breach. Two studies were conducted. In study 1 (N = 420) multi-item measures based on causal indicators representing promissory obligations were developed for the five potential component forms (delay, magnitude, type/form, inequity and reciprocal imbalance). Exploratory factor analysis showed that the five components loaded onto one higher order factor, namely psychological contract breach suggesting that breach is composed of different aspects rather than types of breach. Confirmatory factor analysis provided further evidence for the proposed model. In addition, the model achieved high construct reliability and showed good construct, convergent, discriminant and predictive validity. Study 2 data (N = 189), used to validate study 1 results, compared the multiple-component measure with an established multiple item measure of breach (rather than a single item as in study 1) and also tested for discriminant validity with an established multiple item measure of violation. Findings replicated those in study 1. The findings have important implications for considering alternative, more comprehensive and elaborate ways of assessing breach.