SIEMENS 802D和FANUC 0数控系统子程序应用对比分析

采用对比的方法,介绍了SIEMENS 802D和FANUC 0系列数控系统在子程序应用中的异同点,通过对子程序命名、子程序结束指令及子程序调用的对比分析,编程人员对这两种系统的子程序应用一目了然,进而避免出现一些编程失误。     

徐连低山丘陵区土地资源的合理利用

徐连低山丘陵区光热水资源比较丰富，劳力充足，区位优越，但是目前土地利用不合理，水土流失较为严重。为了充分发挥该区的土地资源优势，搞好水土保持，保护生态环境，必须调整用地结构，扩大林地面积；建设一批稻麦、花生、研究、果品、用材料、牛、兔等商品生产基地，发展高产优质高效农业；同时加强工程措施，提高环境整治效益     

Beauty and Character: Values Beyond Beauty in Architecture

Formalist conceptions of aesthetic goals began to give way from the 17^th century on to rationalist accounts of experience. Beauty as described as essential by Renaissance thinkers was reconceived as just one possibility, with the sublime in Burke's account as another. In the early 20^th century Clive Bell again asserted a formalist position with his argument for significant form. The weakness of the formality position, and the need for a richer, more contextual account of aesthetic goals and experience is argued with reference to the idea of thick and thin concepts as applied by Bernard Williams to ethics, Wittgenstein's attention to the way in which language is used in a specific context, and Scruton's emphasis on an informed conception of the object of aesthetic attention. Beauty, in Alberti's procedural account if not in his version of the Platonic ideal, can be seen to continue to have critical value. The idea of character, however, offers a broader range of possibilities for experience and of goals for design.     

Connecting Teacher Beliefs to the Use of Children’s Literature in the Teaching of Mathematics

This article presents examples that illustrate how teachers use childrens literature in the teaching of mathematics. The examples are related to four curriculum ideologies that have influenced mathematics education in the USA for the last 75 years. It discusses why it is relevant to help teachers understand the ideological positions that influence their use of childrens literature during mathematics instruction, summarizes the four ideological positions, and presents results of a study of how teachers ideological positions relate to their use of childrens literature in the teaching of mathematics. The study examines two research questionsCan an instructional tool be developed that will highlight for teachers the different ways in which they and others use childrens literature to teach mathematics? and Can that instructional tool stimulate teacher discussion and reflection about their own beliefs and the ideological nature of the instructional environment in which they learned (as students) and teach (as teachers)? Study results indicate that both questions can be answered in the affirmative.     

一般指派问题的LINGO解法讨论

一般指派问题是生产管理者在日常工作中经常会遇到的一类问题,它的数学模型是讨论指派n个人完成m项任务的目标最优化。目前,解决指派问题最有效的方法是“匈牙利法”,但此种方法因计算过程比较烦琐、计算量大、容易出错等缺点而未能被推广应用于生产实际。根据指派问题的模型特点,介绍一种简单易行、方便有效的解决此类问题的LINGO解法,以便更好地应用于实际。     

MV-代数、R0-代数、格蕴涵代数、FI-代数、BL-代数与剩余格

基于剩余格的理论与方法给出了MV-代数、R0-代数、格蕴涵代数、FI-代数、BL-代数与剩余格代数的定义的等价形式;进一步指出了各种逻辑代数的剩余格的代数本质.说明了剩余格在逻辑代数系统中的重要地位;分析了MV-代数、R0-代数、格蕴涵代数、FI-代数、BL-代数以及基础R0代数之间的相互关系,为进一步的研究奠定了必要的基础.     

针对特点讲求方法提高艺术性--新时期青年思想政治工作之我见

在改革开放和建立社会主义市场经济体制进程中,青年人的思想发生了复杂而深刻的变化,青年思想政治工作也随之面临新的考验.研究和分析新时期青年思想政治工作的特点和艺术性,在内容、形式、方法等方面进行创新和改进,是现阶段做好青年工作的当务之急.     

中子测厚的研究

本文报告了利用慢中子透射法测量钢板厚度的研究结果．     

Differences in Graduation Rates Between Young Black and White College Students: Effect of Entry into Parenthood and Historically Black Universities

Black and White students who enrolled in college by age 20 were selected from a national probability sample, in order to estimate the prevalence of having children and the effect of having a child on probability of graduation with a bachelors degree. Black students reported significantly higher rates of having children than White students, but rates for Black students at historically Black universities were similar to those of Black students at predominantly White universities. After controlling for family background, achievement, and other student characteristics, having a child within 5 years of starting college generally reduced the probability of graduating with a bachelors degree for Black women and White women and men. The independent effect of attending a historically Black college was significantly positive for Black women but not statistically significant for Black men.     

“Hispanic” children: Theoretical,empirical, and related policy issues

Not only are school-age ethnic and racial minority children one of the fastest growing segments of the U.S. population, they are also one of the most vulnerable. Hispanic children in particular are representative of the at-risk status of minority populations, displaying a portrait of unrealized social, educational, and employment success. This paper addresses the background and history of U.S. social and educational policies as they relate to the Hispanic student. Recent empirical findings are presented which support the following: (a) the bilingual character of Hispanic children is not a linguistic, cognitive, or educational liability and, in fact, should be employed to promote academic achievement; (b) the culture of the Hispanic family and child are better understood with regard to socialization variables and the potential differences they produce when directly compared to Anglo culture; and (c) educational strategies for Hispanic students that respect and integrate students' social, psychological, and linguistic attributes serve students effectively.