网络学习者学习障碍的分析

在网络教育如火如荼的今天,许多研究者从不同角度对网络学习作了深入的分析和总结。本文试图从网络学习者的角度出发,分析学习者在网络化条件下遇到的各种学习障碍,并试图给出学习者一些策略性建议。     

住宅小区太阳能热水系统智能监控应用研究

基于计算机串口通讯与单片机控制相结合的控制技术和无线控制模块的通讯技术,在住宅小区的太阳能热水工程系统中架构计算机智能监控网络,并运用于实际是今后智能化小区建设的重要环节。     

SAS软件在环境监测数据处理中的应用

SAS是目前功能齐全、便于应用的优秀统计软件.本文介绍了该软件在环境监测数据处理中的各类分析方法.于优化监测数据分析结果和监测网的设计以及环境质量综合评价均有较好的借鉴作用.     

对开展双语教学的思考

目前,随着科学技术的飞速发展和中国进入世界贸易组织,社会更需要复合型的人才,人们逐渐地认识到社会对外语的迫切需求和双语教育的重要性。人们不仅用外语来交流信息和情感,更重要的是用来作为学习先进技术和管理经验的手段。此文章从两个方面阐述了双语教学的可行性：生物功能和监控理论。说明了双语教学在我国将会逐渐地被中、小学所采用。     

A comparison of traditional and modified Summated-Heart-Rate-Zones models to measure internal training load in basketball players

The Summated-Heart-Rate-Zones training load (SHRZ TL) model is used to measure internal loading; however, a major limitation of this approach is the use of broad heart rate (HR) zones to quantify exercise intensity. Therefore, this study aimed to compare SHRZ TL outcomes derived using the traditional model and modified approaches using smaller HR zones. HR responses were monitored in 15 semi-professional basketball players during preparatory training to calculate SHRZ TL using the traditional approach with 10%HR_max zones (SHRZ₁₀) and modified approaches with 5%HR_max zones (SHRZ₅) and 2.5%HR_max zones (SHRZ_2.5). Significant (P < 0.001) differences were evident in SHRZ TL between SHRZ₁₀ (254.2 ± 41.7 AU) and SHRZ₅ (275.9 ± 43.3 AU, unclear, small) as well as SHRZ_2.5 (286.7 ± 44.3 AU, very likely, moderate). Use of SHRZ_2.5 provides novel insight regarding internal loading in basketball players and may carry greater sensitivity for detection of maladaptive and adaptive responses to training.     

基于BSP-16的实时视频监视系统研究

BSP-16处理器具有功能强大的硬件结构和软件系统,非常适合应用于实时视频监视系统。本文首先根据视频图像编码原理及H.264建议的要求,提出了基于BSP-16的实时视频监视系统的构架。     

REMPI-TOFMS用于焚烧过程二恶英的连续监测

介绍了剧毒污染物二恶英的基本特性以及焚烧过程产生二恶英的特点,阐述了共振增强多光子电离-飞行时间质谱（REMPI—TOFMS）技术的优势以及应用于二恶英连续监测的潜力。对于焚烧过程产生的二恶英,以其替代物作为检刹对象的REMPI—TOFMS检测技术在连续监测方面展现出很好的前景。     

The impact of strategy instruction and timing of estimates on low and high working-memory capacity readers' absolute monitoring accuracy

Working-memory capacity, strategy instruction, and timing of estimates were investigated for their effects on absolute monitoring accuracy, which is the difference between estimated and actual reading comprehension test performance. Participants read two expository texts under one of two randomly assigned reading strategy instruction conditions (an explanation strategy versus no strategy). Next, readers estimated comprehension test performance both immediately and after a delay. Readers' estimations were followed by the completion of a comprehension test, a postdiction of test performance, and a working-memory capacity task. The results showed that low working-memory capacity readers were generally more accurate than high working-memory capacity readers but were not affected by strategy instruction or timing of estimates. In contrast, high working-memory capacity readers were most accurate when instructed to use an explanation strategy and when estimates were made immediately. These results are described in the context of the increased processing hypothesis, which contends that more effortful processing during reading augments the availability of text concepts and, in turn, enhances absolute monitoring accuracy.     

基于ZigBee技术的农村沼气检测预警系统设计

为实现农村沼气能源的安全使用和有效管理,根据物联网的体系结构,设计了基于物联网的农村沼气监测预警系统。该系统采用传感层、传输层和应用层的分层网络架构,利用无线传感器网络技术实现传感层的沼气环境参数采集,利用GPRS技术完成传输层的沼气环境参数无线传输,通过应用层的数据监测中心软件对系统进行远程监测和操作。该系统的设计为实现大规模农村沼气监测的信息化和网络化提供了技术支撑,具有广阔的应用价值和推广前景。     

Introduction to the Open File

After briefly describing the emergence and evolution of the global movement toward Education for All (EFA), the Introduction discusses the difficulties of employing target goals to bring about significant policy change and educational transformation. The article then presents a comprehensive overview of the uneven progress towards EFA since 2000, both across regions and within countries, but also across the six goals themselves. The final section outlines the priority steps to be taken by international agencies, national governments, civil society and donors to support EFA in the years to come.