基于DSRC和CDPD的先进公交系统

本文首先讲述了ITS中的2种通信技术——专用短程通信（DSRC）和蜂窝数字分组数据网（CDPD）的基本概念、工作原理及系统特点等，然后提出了一种基本这2种通信技术的先进公交系统，并对各个子系统的功能结构进行了描述。     

数据包络分析有效性理论的一点探索

文章给出经典的基于输入的和基于输出的数据包络分析(DEA)模型,以及把基于输入和基于输出的模型相结合的相对效率模型,并且把这些模型引用到评价证券的相对有效性上,以风险作为输入,期望收益率作为输出,便可以用DEA模型评价每只证券的相对有效性.     

我国金融监管的现状与对策分析

“入世”后我国金融监管面临严峻挑战。如何适应新形势建立高效的金融监管体制成为我国经济发展中一个非常重要的问题。文章通过“入世”后对我国金融监管带来的冲击以及目前金融监管存在的问题分析 ,提出转变我国金融监管的对策。     

利用OLE技术实现Excel与dBase的通信

论述了一种基于OLE自动化技术、利用Excel的OLE对象实现Excel与dBase数据库之间进行通信的方法，并给出了在VB下实现该技术的主要代码。     

RESEARCH NOTE: ERRORS IN THE OCTOBER HOUSEHOLD SURVEY 1994 AVAILABLE FROM THE SOUTH AFRICAN DATA ARCHIVE1

The on‐line electronic documentation supplied with the 1994 October Household Survey by the South African Data Archive (SADA) appears to be incorrect. In particular, the electronic version of the questionnaire does not correspond to the hard copy in the possession of the author. The most serious error is that the race classification in the electronic copy is different from the classification on the hard copy. Researchers relying on the electronic copy will erroneously interchange the categories “Coloured”, “White” and “Black”. This could lead to seriously misleading analyses. The reason for this mistake can probably be attributed to a retyping of the questionnaire using the 1993 OHS as a template.     

城市化、工业化与城乡收入差距互动关系的实证研究

本文从内生动态系统的角度，采用PanelData的联立方程组模型，用2SLS和3SLS方法对中国城市化、工业化与城乡收入差距之间的互动关系进行了实证估计。研究表明，城乡收入差距与城市化和劳动力的非农转移呈良性循环的互动关系，工业化发展与城乡收入差距呈恶性循环关系，城市化与工业化没有显著的相互影响关系，城市化、工业化与城乡收入差距对经济增长的影响均不显著。     

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。     

Hypothesis tests using data envelopment analysis

A substantial body of recent work has opened the way to exploring the statistical properties of DEA estimators of production frontiers and related efficiency measures. The purpose of this paper is to survey several possibilities that have been pursued, and to present them in a unified framework. These include the development of statistics to test hypotheses about the characteristics of the production frontier, such as returns to scale, input substitutability, and model specification, and also about variation in efficiencies relative to the production frontier.     

The adequacy of asymptotic approximations in the near-integrated autoregressive model with dependent errors

We consider the normalized least squares estimator of the parameter in a nearly integrated first-order autoregressive model with dependent errors. In a first step we consider its asymptotic distribution as well as asymptotic expansion up to order O_p(T⁻¹). We derive a limiting moment generating function which enables us to calculate various distributional quantities by numerical integration. A simulation study is performed to assess the adequacy of the asymptotic distribution when the errors are correlated. We focus our attention on two leading cases: MA(1) errors and AR(1) errors. The asymptotic approximations are shown to be inadequate as the MA root gets close to −1 and as the AR root approaches either −1 or 1. Our theoretical analysis helps to explain and understand the simulation results of Schwert (1989) and DeJong, Nankervis, Savin, and Whiteman (1992) concerning the size and power of Phillips and Perron's (1988) unit root test. A companion paper, Nabeya and Perron (1994), presents alternative asymptotic frameworks in the cases where the usual asymptotic distribution fails to provide an adequate approximation to the finite-sample distribution.     

AN EVALUATION OF PROCESS‐ORIENTED SUPPLY CHAIN MANAGEMENT FRAMEWORKS

Supply chain management (SCM) is implemented by integrating corporate functions using business processes within and across companies. Several process‐oriented frameworks for SCM have been proposed but only two of these provide sufficient detail to enable implementation. We evaluate the Supply‐Chain Operations Reference (SCOR) framework and The Global Supply Chain Forum (GSCF) framework using four criteria and identify their relative strengths and weaknesses.