西安新农村建设规划的地域特色研究

模糊的建设目标，非根植性的规划模式，急功近利的建设速度等致使西安新农村建设羁绊丛丛。针对西安新农村建设所存在的问题，结合西安新农村建设的现实基础，明确提出了西安新农村建设的目标体系，归纳总结了近年来西安新农村建设的适宜模式，并初步提出了提高西安新农村建设规划综合效益的改进策略，以期高效推进西安新农村建设的有序开展。     

比较优势：湖南文化产业创新战略的立足点分析

湖南文化产业经过多年的发展，取得了一定的成绩，与其它地区相比，具有资源、人才、基础设施、消费需求和试验区政策等方面的比较优势。这些比较优势是湖南制定文化产业创新战略的立足点。     

Approximate estimation in nonlinear panel data models

This paper is concerned with the estimation of a general class of nonlinear panel data models in which the conditional distribution of the dependent variable and the distribution of the heterogeneity factors are arbitrary. In general, exact analytical results for this problem do not exist. Here, Laplace and small-sigma appriximations for the marginal likelihood are presented. The computation of the MLE from both approximations is straightforward. It is shown that the accuracy of the Laplace approximation depends on both the sample size and the variance of the individual effects, whereas the accuracy of the small-sigma approximation is 0(1) with respect to the sample size. The results are applied to count, duration and probit panel data models. The accuracy of the approximations is evaluated through a Monte Carlo simulation experiment. The approximations are also applied in an analysis of youth unemployment in Australia.     

Computing the probability of hash table/urn overflow

We analyze the probability of a random distribution of n balls into m urns of size b resulting in no overflows. This solves the computational problem associated with a classical combinatorial extreme-value distribution. The problem arose during the analysis of a technique, called perfect hashing, for organizing data in computer files. The results and techniques presented can be used to solve several problems in the analysis of hashing techniques     

理工高校法律人才培养模式之检讨

通过抽样考察,可窥见我国理工高校法律人才培养模式总体现状欠佳,其主要存在这样几个问题:一是培养模式未彰显特色,培养目标指向趋于同质,定位模糊;二是培养机制缺乏制度化支撑,长久动力不足,人才培养缺乏竞争优势。理工高校应以应用复合型卓越法律人才培养目标的确立,特定法律人才培养机制的建构,特色法律专业课程的设计和教学方法的创新,以及法律人才培养模式的制度化保障等四个方面为进路,尽快改变理工高校法律人才培养的欠佳状况。     

Mapping Invasive Species Risks with Stochastic Models: A Cross-Border United States-Canada Application for Sirex noctilio Fabricius

Nonindigenous species have caused significant impacts to North American forests despite past and present international phytosanitary efforts. Though broadly acknowledged, the risks of pest invasions are difficult to quantify as they involve interactions between many factors that operate across a range of spatial and temporal scales: the transmission of invading organisms via various pathways, their spread and establishment in new environments. Our study presents a stochastic simulation approach to quantify these risks and associated uncertainties through time in a unified fashion. We outline this approach with an example of a forest pest recently detected in North America, Sirex noctilio Fabricius. We simulate new potential entries of S. noctilio as a stochastic process, based on recent volumes of marine shipments of commodities from countries where S. noctilio is established, as well as the broad dynamics of foreign marine imports. The results are then linked with a spatial model that simulates the spread of S. noctilio within the geographical distribution of its hosts (pines) while incorporating existing knowledge about its behavior in North American landscapes. Through replications, this approach yields a spatial representation of S. noctilio risks and uncertainties in a single integrated product. The approach should also be appealing to decisionmakers, since it accounts for projected flows of commodities that may serve as conduits for pest entry. Our 30-year forecasts indicate high establishment probability in Ontario, Quebec, and the northeastern United States, but further southward expansion of S. noctilio is uncertain, ultimately depending on the impact of recent international treatment standards for wood packing materials.     

BARTLETT CORRECTED LIKELIHOOD RATIO TESTS IN LOCATION-SCALE NONLINEAR MODELS

The paper derives Bartlett corrections for improving the chisquare approximation to the likelihood ratio statistics in a class of location-scale family of distributions, which encompasses the elliptical family of distributions and also asymmetric distributions such as the extreme value distributions. We present, in matrix notation, a Bartlett corrected likelihood ratio statistic for testing that a subset of the nonlinear regression coefficients in this class of models equals a given vector of constants. The formulae derived are simple enough to be used analytically to obtain several Bartlett corrections in a variety of important models. We show that these formulae generalize a number of previously published results. We also present simulation results comparing the sizes and powers of the usual likelihood ratio tests and their Bartlett corrected versions when the scale parameter is considered known and when this parameter is uncorrectly specified.     

党内民主发展的演进轨迹及其基本经验

党内民主是党的生命。新中国成立60年来，党内民主在理论和实践上都取得了一系列辉煌的成就，但仍有一些地方有待完善。因此必须从发展重点、发展策略、发展方向等方面着手进一步推进党内民主的发展。     

基于ASP的在线学习系统的构建

传统的教学由于受时间和空间的限制，越来越满足不了现代社会的终身学习需要，网络教育、远程教育因其具有远距离、实时、交互性强、多媒体化、随时随地学习的特点已成为现代教育最重要的组成部分。     

The Relationship of Expectancies to the Transtheoretical Model of Change in College Smokers

Abstract

Efforts on the part of the sci en tific com mu nity have resulted in in creased knowl edge about to bacco ad die tion and im proved treat ment ef fi cacy. De spite these gains, how ever, our un der stand ing of to bacco ad die tion re mains in com plete. Two el e ments that may help il lu-mi nate the knowl edge of this ad die tion pro cess and pro vide im pli ca tions for treat ment are the Transtheoretical Model of Change and the con cept of ex pec tan cies. This project is a be gin ning step in ex plor ing the re la tion ship be tween the transtheoretical model and fac ets of ex pec tan cies among col lege smokers.