齿轮齿距累积误差计算机程序设计

运用齿轮齿距累积误差的计算机程序设计的原理、方法和计算机程序,可快速、准确地进行数据处理,直接打印出齿轮的齿距累积误差.本文对此进行了介绍.     

Counseling trainees’ academic burnout,meaningful work,and career choice satisfaction: A resilience framework

This study focused on examining counseling trainees’ perceptions of meaningful work as a resilience factor against decreased career choice satisfaction, which is related to burnout experience. As a result of latent moderated structural equation modeling, academic burnout and meaningful work were significantly related to career choice satisfaction. Furthermore, meaningful work significantly buffered the negative relationship between academic burnout and career choice satisfaction. Our findings suggest that meaningful work plays both compensatory and protective roles against the negative effect of academic burnout on career choice satisfaction. We provided implications for counselor training and preparation.     

对中美“直接请求”言语行为的跨文化分析

本文以“直接请求”言语行为为讨论对象,从社会距离和相对权势这两个角度来比较中美“直接请求”言语行为的异同之处,并以两国不同的文化价值观为出发点对这两者的异同处进行讨论解释。     

区域大气污染排放效率:变化趋势、地区差距与影响因素——基于长江经济带11省市的面板数据

基于全要素生产理论,运用非径向加权Russell方向性距离函数测算2007-2014年长江经济带11个省市的大气污染排放效率,分析效率的变化趋势并对其进行分解,通过泰尔指数方法诠释长江经济带大气污染排放效率地区差距的形成原因,利用系统广义矩（GMM）估计方法分析长江经济带大气污染排放效率的影响机制。结果表明:研究期内长江经济带大气污染排放效率较低且维持了下降趋势,大气污染减排潜力巨大;长江上游、中游与下游三大地区之间差距和长江上游地区内部差距是长江经济带大气污染排放效率地区差距的主要成因;在长江经济带大气污染排放无效率中,烟粉尘贡献率最高,其次为SO2,氮氧化物贡献率最低;经济增长、提升第三产业比重、增加R&D投入强度、改善能源消费结构、提高对外开放水平对于长江经济带大气污染排放效率的提升均有明显促进作用。     

MINIMUM QUADRATIC DISTANCE ESTIMATION FOR A PARAMETRIC FAMILY OF DISCRETE DISTRIBUTIONS DEFINED RECURSIVELY

The distribution function of a random sum can easily be computed iteratively when the distribution of the number of independent identically distributed elements in the sum is itself defined recursively. Classical estimation procedures for such recursive parametric families often require specific distributional assumptions (e.g. Poisson, Negative Binomial). The minimum distance estimator proposed here is an estimator within a larger parametric family. The estimator is consistent, efficient when the parametric family is truncated, and can be made either robust or asymptotically efficient when the parametric family has infinite range. Its asymptotic distribution is derived. A brief illustration with Automobile Insurance data is included.     

光学分辨率判据和可见度

本文研究了两个非相干点光源靠近时，在圆孔的夫琅和费衍射下两个光斑之间可见度的变化情况。对于不同判据，可见度有明显差异，表现出各种判据的不一致性。同时还研究了光栅的夫琅和费衍射，当两明条纹很靠近时，可见度的变化情况。同样可以得到各判据相应的数值。     

DEA,directional distance functions and positive,affine data transformation

In this paper we take up the problem of positive, affine data translation within a Data Envelopment Analysis (DEA) framework.     

Inverse maximum flow problems under the weighted Hamming distance

In this paper, we consider inverse maximum flow problem under the weighted Hamming distance. Four models are studied: the problem under sum-type weighted Hamming distance; the problem under bottleneck-type weighted Hamming distance and two mixed types of problems. We present their respective combinatorial algorithms that all run in strongly polynomial times.Research supported by the National Natural Science Foundation of China (60021201), and the Hong Kong Research Grant Council under CERG CityU 9041091 and CUHK 103105.     

消费者信用评估中的PCALWM方法研究

设计了一种基于主成分线性加权模型(PCALWM)的消费者信用评估方法,具有评估的客观性、可行性、适应性等优点。使用真实信用卡数据的实证检验表明模型分类效果比较好,具有较好的应用价值。     

Building Strategic Technology Alliances for Teaching and Learning

There is a major need for higher education to confront intense competition, enhance academic programs to meet the challenges of this competition, and to develop new teaching and learning strategies to meet the demands of the global marketplace. Technology and the Internet are intended to break down the barriers of time and space and enable more students to participate and collaborate with faculty and other students. Critical thresholds must be met in order to use technology to communicate, collaborate, and transform teaching and learning. Strategic technology alliances establish a partnership between technology vendors and higher education that will achieve these thresholds to meet the teaching and learning needs of the 21st century student. This revised version was published online in July 2006 with corrections to the Cover Date.