论网络教育与传统教育的关系

该文分析了网络教育的优点和不足,从而得出:网络教育与传统教育是一种有益的共存与互补的关系。     

Application of stochastic method to optimum design of energy-efficient induction motors with a target of LCC

INTRODUCTIONMostcountrieshaveimplementednewpoli ciesontheenergysavingandenvironmentpro tection.AmericanPresidentBushsigned“TheComprehensiveNationalEnergyPolicyAct”in1992statingthatnogeneral purpose ,three phaseinductionmotorswillbeallowedintoUnit edStat…     

皖西优质烟综合栽培技术

皖西的水、肥、汽、热等自然资源丰富，适合优质烟的综合栽培技术措施的展开；适宜的烤烟良种为NC89，根据本地的降雨、土壤等自然条件，提出了一系列合理的施肥方法，适时的青苗移栽与轮作有密切联系，烟稻轮作在本地有良好的经济效益，且对烟叶的内外品质没有太明显的影响。     

Teacher professional development through digital content evaluation

In this study, researchers designed and implemented a 1-year professional development (PD) program that focused on supporting teachers in evaluating and selecting digital learning contents. Participants in this investigation included 109 teachers who consented to the study amongst a total of 171 teachers from five school districts across central Ohio. In addition to their participation in the PD program, they completed surveys, interviews, and self-reflections in this mixed-method study. The results revealed that teachers’ perceived TPACK increased over time throughout the PD program, suggesting that training teachers to evaluate digital contents can be an effective PD model to improve teachers’ capacity in learning technology integration. The PD program was especially effective for teachers with less prior experience in technology integration or related training. Mathematics teachers, in comparison to teachers from other disciplines, began with low TPACK; however, these initial differences gradually diminished over the course of the PD program. In terms of their motivation in digital content evaluation, teachers’ expectancy for success increased significantly while their task values remained medium high. The qualitative analyses provided additional insights and revealed design suggestions for success in future PDs.     

民间美术与天地鬼神

民间美术始于原始巫术，生成于人类蒙昧时期，是一切造型艺术的原始母体。民间美术长期以来相伴是地鬼神观念、使役于宗教和封建迷信。它通过艺术形象的描绘，表达对不可知的神灵精神的敬畏与祈求，也借助天国境界寄托某种理想观念，或借助神灵驱邪扼鬼，更有利用神话传说、民间故事的描绘歌颂祥和美满的生活及劳动与爱情。其间亦有不少警喻劝世的充满人情味的作品。民间美术的美学价值就在于它的人本精神的表达。     

对称性在定积分计算中的应用

将对称区间上奇函数与偶函数的定积分计算公式作了进一步的推广，得到了几个更为一般性的结果．     

Contributions of morphological awareness and rapid automatized naming (RAN) to Chinese children’s reading comprehension versus reading fluency: evidence from a longitudinal mediation model

Some cognitive processes may be shared between reading comprehension and reading fluency, while others may be independent. In this longitudinal study, 127 Chinese children in grades 1–2 were tested three times (T1–T3) to explore the contributions of early morphological awareness and rapid automatized naming (RAN) to subsequent reading comprehension and reading fluency. The results demonstrated that both T1 morphological awareness and RAN directly and significantly explained a similar amount of variance in T3 reading comprehension and reading fluency. T1 Morphological awareness predicted T3 reading comprehension via T2 word-reading accuracy but not word-reading fluency, whereas the indirect influence of T1 RAN on T3 reading comprehension was not significant. In contrast, morphological awareness predicted reading fluency via word-reading accuracy and fluency, while RAN predicted it only via word-reading fluency not accuracy. The findings add to the growing literature by providing evidence of the similarities and differences in the cognitive underpinnings of reading comprehension versus reading fluency in Chinese children.

     

Laboratory investigation of the strength development of alkali-activated slag-stabilized chloride saline soil

Saline soil stabilization is being increasingly applied in foundation treatment engineering. Chloride saline soil obtained from sites and laboratory-made chloride soil (ZS) with various NaCl concentrations prepared artificially were stabilized using alkali-activated slag (AS). A series of unconfined compressive strength (UCS) tests, X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDXA), thermal gravity-differential thermal gravity (TG-DTG), and ion concentration tests were conducted to investigate the strength variation and mechanism of the AS-stabilized chloride saline soils. The results showed that NaCl has a significant influence on the strength of AS-stabilized chloride saline soil and the strength of AS-stabilized ZS (GZS) increases with increase of chloride content in soil samples. Friedel’s salt (Fs) and NaOH are generated by the reaction of NaCl and CaO·Al2O3 (CA) in the slag in the GZS. Fs can fill the pores in stabilized soil, and NaOH can promote calcium silicate hydrate (CSH) generation. These two effects combine to enhance the strength of GZS. The relationship between the rate of increase of 28-d UCS of AS-stabilized chloride saline soil and the chloride content in soil was obtained through regression analysis of the increase of UCS of GZS.     

Proposal for a cross layer scheme for real-time wireless video

INTRODUCTION Increase in wireless system capacity through 3G services and innovative low bit rate video coding techniques have made it possible to have mobile multimedia services on hand-held systems. High quality real-time multimedia services are slowly be- ing deployed on hand-held systems. However large scale deployment at low cost is still to be realized due to technological challenges such as stringent power control under severely fading environments and the susceptibility of high qu…     

关于智能Web课件原型的剖析

Web技术在网络教育领域得到广泛的应用，本文剖析网络教育中智能Web课件的原型，以实现对网络教学的监控，最终达到网上无有形教师，但胜于有形教师的目的。