CAXA在化工设备设计中的应用

随着化工设备设计过程中对零部件标准化、系列化程度的要求不断提高,应用计算机辅助技术进行优化设计和快速绘制化工设备图成为必然的发展趋势.应用国产计算机辅助技术软件-CAXA电子图板可实现化工设备零部件标准化、系列化设计,快速进行化工设备优化设计,降低设计人员劳动强度,提高化工设备制图速度.     

我国传统美术图形语境下的品牌视觉设计研究

经济全球化为外来品牌的大量进入中国提供了契机，但以我国传统美术图形作为品牌视觉设计的形式在发展过程中逐渐失去了特色。随着品牌视觉设计需求的日新月异以及在图形设计语言探究方面的力度加强，以具有我国特色的美术图形为依据的视觉设计越来越受到人们的关注，因此，有必要对我国传统美术图形语境下的品牌视觉设计进行研究。     

Tornado Warning Perception and Response: Integrating the Roles of Visual Design,Demographics, and Hazard Experience

Recent advancements in severe weather detection and warning dissemination technologies have reduced, but not eliminated, large‐casualty tornado hazards in the United States. Research on warning cognition and behavioral response by the public has the potential to further reduce tornado‐related deaths and injuries; however, less research has been conducted in this area compared to tornado research in the physical sciences. Extant research in this vein tends to bifurcate. One branch of studies derives from classic risk perception, which investigates cognitive, affective, and sociocultural factors in relation to concern and preparation for uncertain risks. Another branch focuses on psychological, social, and cultural factors implicated in warning response for rapid onset hazards, with attention paid to previous experience and message design. Few studies link risk perceptions with cognition and response as elicited by specific examples of warnings. The present study unites risk perception, cognition, and response approaches by testing the contributions of hypothesized warning response drivers in one set of path models. Warning response is approximated by perceived fear and intended protective action as reported by survey respondents when exposed to hypothetical tornado warning scenarios. This study considers the roles of hazard knowledge acquisition, information‐seeking behaviors, previous experience, and sociodemographic factors while controlling for the effects of the visual warning graphic. Findings from the study indicate the primacy of a user's visual interpretation of a warning graphic in shaping tornado warning response. Results also suggest that information‐seeking habits, previous tornado experience, and local disaster culture play strong influencing roles in warning response.     

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     

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.     

“具象图形”对标志识别力的影响

在当今世界快餐文化,信息爆炸的时代,简洁、个性、视觉冲击力强等设计理念,如同快餐简单、好吃、管饱的标准一样。当人们身处陌生、冰冷而又模式化设计的社会生活环境时,具象图形的标志设计可以给人们带来亲切和温暖。     

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。     

浅谈大学英语学习中学生常见的几种翻译难点

在对大学英语的学习过程中 ,不少同学经常遇到一些翻译方面的难点 ,从五个方面对这些难点予以归纳和分析 ,其目的是为了让广大老师和同学予以参考 ,让同学们学习到正确的翻译方法和技巧并以此来促进大家对大学英语的学习