What limits children's working memory span? Theoretical accounts and applications for scholastic development.

Explanations of working memory span in children were studied in a longitudinal follow-up of J. N. Towse, G. J. Hitch, and U. Hutton (1998). Reading span and operation span were lower when within-task retention intervals were lengthened. For each task, variation in span between test waves and age cohorts was systematically related to changes in processing speed. The two spans explained substantial shared variance in both reading and arithmetic scores, with some evidence for domain specificity. Combined span scores predicted unique variance in scholastic attainment over a 1-year interval. The authors concluded that working memory span is constrained by rapid loss of active codes and is not simply a measure of capacity for resource sharing. Working memory is also implicated in scholastic development. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

提高素质——数学教育改革的核心

分析了我国现阶段数学教育中存在的问题,认为数学教育改革的重点不是去盲目改造其教学内容和观点,而应在强化学生的数学素质、培养学生的数学应用意识等方面多下功夫,教学手段、教学方法乃至于教学内容的改革都应围绕这个主题来展开。     

Relative pilot aptitude and success in primary pilot training.

"Based on a sample of 216 aviation cadets… the analysis revealed that a cadet has a better chance of success if he is grouped with cadets of relatively lower aptitude than himself rather than with cadets of relatively higher aptitude. Thus, instructors in this study tended to have a relative frame of reference. To the extent that this phenomenon operates in other training situations, the nation is denied the services of the most highly qualified trained personnel, and the true validity of aptitude tests is underestimated. Methods of minimizing these dangers are discussed." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A factor analysis of aptitude and proficiency measures in radiotelegraphy.

"Fourteen auditory and printed aptitude measures were administered to students prior to entry into training for radiotelegraphy. These 14 measures, together with a criterion of proficiency in learning to receive Morse Code, were subjected to factor analysis study. Five factors were identified as Visualization, Verbal Knowledge, Speed of Closure, Auditory Rhythm Perception, and Auditory Perceptual Speed. Three of these, Auditory Rhythm Perception, Auditory Perceptual Speed, and Speed of Closure, were found to contribute to the criterion of subsequent code proficiency." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

智能型微电子高压物性取样器研究开发

针对油气井下机械取样器在使用过程中出现的问题，研究开发出了智能型微电子高压物性取样器。该取样器结构简单、维护保养方便、取样成功率高，从根本上解决了取样成功率低等问题，消除了返工损失，提高了取样效率、缩短了试油周期。经过现场80多次试验，成功率达到了100％，取得了良好的效果。     

Aptitude, achievement, interest, and personality tests: a longitudinal comparison.

Of a group of 1500 freshmen extensively tested in 1939, 249 male and 252 females who graduated prior to 1949 were followed up to determine the relationship between test performance, grades, and curriculum from which graduated. "These tests can predict to a limited extent the grades students will obtain in various kinds of courses.… Curricular profiles can be constructed… vocational interest tests differentiate better among curricular groups than do other kinds of tests and… prediction of which curriculum a student will graduate from can be made better with an interest test than with either aptitude or achievement tests.… For those training programs which are at college levels, differential abilities do not appear to be very important when compared to differential interests.… " (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

An experimental analysis of role behavior.

"Six Ss, equated for age, conformance of expectation of the role of daughter in contemporary American culture, and congruence of self with the daughter role, each engaged in brief enactment of the role of daughter. The Ss varied systematically in role-taking aptitude as assessed by a simple face-valid As-If procedure." The following hypotheses are tested and supported by the data: "role-taking aptitude and validity of role-enactment are positively correlated; role-taking aptitude and self-constancy following role-enactment are negatively correlated; the shift in self-conception following role-enactment is in part, a function of the specific role enacted; and, finally, role-taking aptitude and a social adjustment variable are positively correlated." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于嵌入式以太网的变电站基层网络构建

本文介绍了一种利用变电站的智能终端集成嵌入式以太网.各智能终端再通过集线器与上层网络通讯的局域网组网方法。以此完成了间隔层和站控层之间的实时通信任务.从而实现了整个变电站工业控制网络与因特网之间的信息无缝连接。     

一种简明易用的函数识别绘图编辑器的设计

利用编译原理、计算机图形学等知识以及VC工具,设计了一个函数计算和绘图软件,该软件具有计算并绘制函数图形、矩阵运算以及智能计算等功能。实验证明该软件可用于数学的学习与教学以及工程的简单计算等。     

功夫在诗外——中专语文因材施教蠡测

随着中专生源的变化,中专语文因材施教势在必行。而因材施教绝不仅仅是技术层面上的问 题,而是内涵丰富。要求教师以人为本,用“心”教学,与时俱进。具体在情感态度、方式方法等方面要做到八 有:爱材之情;超材之能;识材之方;激材之术;练材之法;容材之量;管材之胆;育材之道。