从编辑角度反思网络文化

从编辑的角度对网络文化中的几个有争议的概念和问题进行了分析，指出应科学评价和对待网络文化，促进社会和谐。     

现代图学教育技术及多媒体教学

具有电脑辅助构形和电脑绘图技术特征的现代图学的雏形已经形成。现代图学将极大促进现代科技和现代教育技术的发展。现代教育技术的参与,改变了整个教育和教学过程的模式和组织序列,改变了分析和处理教育及教学问题的思路。多媒体教学有效地解决了提高教学效益,实现规模教学,增大信息量,强化学生的能力这一难题。理想的CAI课件应该是一个充实、开放的平台。现代教育技术对教师提出了很高的要求,教师必须树立起终身学习,不断攀登的信念。科学可视性要求人机之间建立起一种新型的视觉关系,以便准确、高速地交流信息。     

TPM手控器操作臂的变形分析

给出了TPM手控器操作臂的弯曲变形精确位移方程 ,分析了精确解与材料力学近似解的误差 ,这一算法对于精确分析机器人操作臂的变形有重要意义。     

Dimension reduction for the conditional kth moment in regression

The idea of dimension reduction without loss of information can be quite helpful for guiding the construction of summary plots in regression without requiring a prespecified model. Central subspaces are designed to capture all the information for the regression and to provide a population structure for dimension reduction. Here, we introduce the central k th-moment subspace to capture information from the mean, variance and so on up to the k th conditional moment of the regression. New methods are studied for estimating these subspaces. Connections with sliced inverse regression are established, and examples illustrating the theory are presented.     

发电设备常用标准件图库图形输入技术研究

本文介绍发电设备标准件图形库图形输入板的输入原理和设计方法.该方法输入简易可行,交互性强.     

Variations of Q–Q Plots: The Power of Our Eyes!

In statistical modeling, we strive to specify models that resemble data collected in studies or observed from processes. Consequently, distributional specification and parameter estimation are central to parametric models. Graphical procedures, such as the quantile–quantile (Q–Q) plot, are arguably the most widely used method of distributional assessment, though critics find their interpretation to be overly subjective. Formal goodness of fit tests are available and are quite powerful, but only indicate whether there is a lack of fit, not why there is lack of fit. In this article, we explore the use of the lineup protocol to inject rigor into graphical distributional assessment and compare its power to that of formal distributional tests. We find that lineup tests are considerably more powerful than traditional tests of normality. A further investigation into the design of Q–Q plots shows that de-trended Q–Q plots are more powerful than the standard approach as long as the plot preserves distances in x and y to be the same. While we focus on diagnosing nonnormality, our approach is general and can be directly extended to the assessment of other distributions.     

A general algorithm fob,univariate and multivariate goodness of pit tests based on graphical representation

This paper presents a general algorithm tor assessing the distributional assumptions. Empirical distributions of the corresponding test statistics are obtained and examples are given to illustrate various applications of the proposed test. By using the squared radii and angles, it is shown that the problem of assessing multivariate normality can be reduced to that of testing for a univariate distribution. A limited comparison is made to investigate the power of the proposed test. This work was supported in part by the National Science Foundation under Grant NO.G88135. Support from the Computer Applications ami Software Engineering (CASE) Center of Syracuse University is also gratefully acknowledged     

股指期货高频动态估值研究——以沪深300股指期货为例

相比传统的持有成本估值模型,在考虑实际市场中高频动态信息的基础上提出的高频动态估值模型,有利于投资者在瞬息万变的股指期货市场中对股指期货价格进行更为精确的预测。通过以沪深300股指期货连续合约为例的5分钟高频动态估值实证分析,发现高频动态估值模型的平均估值精确度能够达到99.92%,是持有成本估值模型精确度的14.2倍,且估值误差波动有望降低至持有成本估值模型的8.93%。     

三维物理图形的计算机绘制

根据计算机绘制物理三给图的基本原理，本文介绍几种我们研制的物理三维图形的绘制方法。它们适合一般条件的设备，适应大学物理教学需要。我们程序的特点是占内存小、运行速度快。     

Considerations in Feedback Delivery: The Role of Accuracy and Type of Evaluation

Performance feedback remains a commonly implemented and successful intervention within organizational behavior management, but a comprehensive understanding of the components that influence the effectiveness of feedback tends to be lacking. The present study sought to contribute by analyzing the variables of accuracy (contingent on or independent of performance) and evaluation type (supportive or critical judgments) on performance using a simulated work environment. A total of 75 undergraduate students were randomly assigned to 1 of 4 experimental conditions: (a) contingent and supportive feedback, (b) contingent and critical feedback, (c) independent and supportive feedback, or (d) independent and critical feedback. Outcomes suggested that contingent feedback improved performance relative to independent feedback, however, no differences were found between supportive and critical types of feedback. The need for additional research into the functional and formal elements of effective feedback is also discussed.