数控机床功能的扩展

本文主要分析了HEIDENHAIN TNC 310数控铣床系统中圆弧铣削指令及螺纹铣削指令,对螺纹铣削功能进行延伸,扩展到圆弧三轴联动,并对螺纹铣削指令格式进行了修改,从而具有圆弧三轴联动铣削功能。     

民族院校新闻传播学科发展的路径选择

民族院校应该是以全面服务于非主流族群作为自身的基本定位，民族院校的新闻传播学科要在准确理解这一定位的基础上确立自身的发展路径，以鲜明的特色建构来强化自身的学科核心竞争力。     

Towards Enhancement of the Economy of a Thermal Power Generating System through Prediction of Plant Efficiency

The plant ‘Heat Rate’ (HR) is a measure of overall efficiency of a thermal power generating system. It depends on a large number of factors, some of which are non-measurable, while data relating to others are seldom available and recorded. However, coal quality (expressed in terms of ‘effective heat value’ (EHV) as kcal/kg) transpires to be one of the important factors that influences HR values and data on EHV are available in any thermal power generating system. In the present work, we propose a prediction interval of the HR values on the basis of only EHV, keeping in mind that coal quality is one of the important (but not the only) factors that have a pronounced effect on the combustion process and hence on HR. The underlying theory borrows the idea of providing simultaneous confidence interval (SCI) to the coefficients of a p-th p(≥1) order autoregressive model (AR(p)). The theory has been substantiated with the help of real life data from a power utility (after suitable base and scale transformation of the data to maintain the confidentiality of the classified document). Scope for formulating strategies to enhance the economy of a thermal power generating system has also been explored.     

基于因果关系的教育研究方法思考

探索、检验因果关系是教育科学研究的重要目标之一,相关分析、回归分析、路径分析等常用统计方法存在许多不足。结构方程模型是针对这些不足提出来的,从统计思路上,它具有优点,但还不够完善,应引起我国教育学界的注意。     

论我国政府绩效评估的实践途径

为适应我国行政体制改革和加入WTO的要求,就必须重视政府绩效评估。目前我们要建立完整的政府绩效评估内容、程序和方法,使政府绩效评估走向制度化、规范化和科学化的道路。     

非负权最短路问题的一种简便算法

提出了非负权最短路问题的一种新算法。与有名的Ｄｉｊｋｓｔｒａ算法相比，这种算法计算简便、容易理解、易于编程。     

庄子哲学的历史渊源

庄子哲学思想产生于楚国独特的历史土壤。楚国历史悠久的天文学,为庄子的朴素唯物的天道观提供了科学基础;楚人是《易经》与阴阳家的鼻祖,其辩证的思维方式,为庄子哲学提供了“切玉刀”;楚国在长期而独特的历史道路中成长的民族精神,为庄子哲学提供了丰厚的精神营养。     

行政自由裁量权的两面性及其控制路径

行政自由裁量权作为行政权的重要组成部分,在行政活动中扮演着独特的角色。随着社会事务的日益纷繁复杂,行政自由裁量权在大幅度膨胀的同时,也给人们的正当权益造成了威胁。因此应考察其存在的合理性和被滥用的可能性,从外部控制和行政自我控制等视角对其有效控制路径作出研析。     

Local dependence estimation using semiparametric archimedean copulas

The authors define a new semiparametric Archimedean copula family which has a flexible dependence structure. The generator of the family is a local interpolation of existing generators. It has locally‐defined dependence parameters. The authors present a penalized constrained least‐squares method to estimate and smooth these parameters. They illustrate the flexibility of their dependence model in a bi‐variate survival example.     

分振幅薄膜干涉课件的制作

利用电脑对点光源和发光平面的薄膜干涉进行模拟 ,并将其制作成多媒体课件 ,使看上去很复杂的光路图变得简单、清晰 ,使教学具有良好的视觉效果 ,大大增强了课堂的容量