Bias in content validity on the Boehm Test of Basic Concepts for White and Mexican-American children

Item bias on Forms A and B of the Boehm Test of Basic Concepts was examined for a sample of White and Mexican-American kindergarten children. The method employed to detect biased items, as defined by an items-by-group interaction, was a two-way analysis of variance with followup being conducted with a Bonferroni-type procedure. Bias-in-item difficulty occurred for both groups, which does not conform to the current popular press view that bias is against ethnic minorities and not against the White majority. The finding that on some items the Mexican-American group out-performed the White group indicates the need to examine carefully the question of bias and to reconsider popular conceptualizations of the many issues of bias in educational and psychological testing.     

便捷电池性能快速检测仪设计

针对5V以下的锂电池、镍镉电池、镍氢电池、干电池等电池的开路电压、内阻和电池容量进行快速检测。本设计以STC12C5A60S2单片机为控制核心,通过单片机自带的A/D转换功能进行开路电压的检测.内阻与容量则选用线性霍尔元件ACS712ELCTR-05B-T来测量。容量的测量采用电流积分法。本检测仪具有结构设计简单、性价比高、检测效率高、适用范围广泛的特点,并具有较强的可扩展性。     

简朝亮的诗歌分期及其特点

一方面,敏锐的时序感使简朝亮在诗文作品中比较清晰地体现其“读书——科举”、拜师问道、开馆授徒、闭门著述的学者一生。另一方面,张子沂等门人注意以时间为序编纂《读书堂集》。因此,简朝亮的诗作有一清晰的分期。     

关于乡闱的记忆、叙述与想象——以清代士人笔记为中心的考察

清代笔记史料中谈到乡闱的很多,而记载乡闱之中“鬼神精怪”的文字更多。从今日的唯物主义观点来看,这些故事都有可能是虚构的,但是它们所表现出来的历史情景与创作者和传播者的心态与观念却是真实存在的,而我们所要了解的恰恰是这种文字背后的清代社会情况以及处于其中的士人阶层的心理。本文即试图由这一思路出发,对清代笔记史料中关于“乡闱”的文本进行一个系统的分析和考察,以揭示出清代士人特殊的文化心理状态。     

Individual differences in children's ability to profit from picture adjunct aids

A paired-associate memory task with pictures and words as items was used to categorize fourth graders into four learner types: HH, high picture-high word; HL, high picture-low word; LH, low picture-high word; LL, low picture-low word. Some children in each classification read prose passages with picture adjunct aids; other children read the passages without adjunct aids. Although free recall for the prose passage yielded inconclusive data, a constructed response test for facts in the prose passages revealed significant Aptitude × Treatment interactions, such that poor paired-associate learners (i.e., LLs) profited more than did good paired-associate learners (i.e., HHs) from picture aids on the prose task. The children's standardized reading scores were positively related to memory performance, but good and poor readers did not differ in their ability to profit from picture aids. It was suggested that less-strategic learners, such as those who perform poorly on paired-associate tasks, are more likely to be helped by externally provided mediational aids, while more-strategic learners are more likely to be helped by instructions to generate their own mediational aids.     

武当山静乐宫的复建与文物保护

静乐宫是武当山古建筑的起点“宫”,按照“不改变文物原状”的原则,无论在规模、法式、材质还是工艺方面,都尽力作了“保持原貌”的复建,较好地保持和再现了它的历史、科学、艺术价值及其承载的原有丰富文化内涵。     

The process of review: A levels of processing approach

This experiment investigated the effects of reviewing notes at a deeper level of abstraction, by means of reorganization. No differences in immediate recognition performance were found for subjects who reorganized notes into an instructor-generated matrix versus subjects who reviewed in their typical manner. An interaction between method of review and type of delayed test was apparent. Reorganization during review resulted in relatively higher achievement on a free recall test while unstructured review produced higher achievement on a cued recall exam. This interaction was unpredicted by the theory of encoding specificity but was explained in regard to the theory of episode matching. Instructionally, reorganization was advocated as a review technique for most learning situations in which retrieval cues are not imposed.     

米芾在涟水考

北宋名书画家米芾曾在绍圣、元符年间出任涟水军使，任期虽然只有二年，即创作了十余首诗词和不少书法作品，并留下了惠泽百姓的政绩。     

The principle of calibration using the ionic current —A new calibration method for electro-magnetic flowmeters

An equivalent relationship between electro-magnetic flowmeters (EMFs) and the Hall effect is discussed in principle and three equivalent conclusions about their measuring equations are derived. Thereby, the calibration using the ionic current (CUIC) is introduced to the calibration of EMFs in a special Hall effect system. A basic system with these equations is specially given and discussed for realizing the method. Two key points about CUIC are proved by a simple experiment.     

《窝头会馆》：新主旋律叙事

《窝头会馆》是作家刘恒的话剧处女作,虽然是第一次写话剧,还是获得了很大的成功。在表现主旋律上,刘恒的创作体现了新的变化。主旋律很容易使人想到高大全、假大空的文学形象和文学作品,然而《窝头会馆》却避免了这样的弊病,在展现建国前后特殊时代风貌时,作者把落脚点放在永恒的人性上,剧中的人物显得生动可感,＂对主旋律的探索能悄悄抵达观众的心＂。