呼叫中心在远程教育中的应用——以阿萨巴斯卡大学和中央广播电视大学为例

呼叫中心不仅在电信业、银行业、保险业以及新兴的信息技术产业中有着广泛的应用,在远程教育中利用呼叫中心也能提高学生支持服务的质量。本重点介绍了阿萨巴斯卡大学的呼叫中心与中央广播电视大学远程接待中心,试图为我国远程教育呼叫中心的建设提供一些启示。     

Novel high torque bearingless two-sided rotary ultrasonic motor

Applications are limited at present because the currently available ultrasonic motors (USMs) do not provide suffi-ciently high torque and power. The conventional travelling-wave USM needs the bearing to support, which required lubricant. To solve the above problem, a bearingless travelling-wave USM is designed. First, a novel structure of the two-sided USM consisting of a two-sided teeth stator and two disk-type rotors is designed. And the excitation principle of the two-sided travelling-wave USM is analyzed. Then, using ANSYS software, we set up the model of the stator to predict the excitation frequency and modal response of the stator. The shape of the vibration mode was obtained. Last, the load characteristics of the USM are measured using ex-perimental method. The maximum stall torque and the no-load speed were obtained. The results showed that the characteristics of the two-sided USM are better than those of the conventional one-sided USM.     

基于湿度控制技术的岩心电阻率测量研究

针对油田岩心室内试验中工作气体湿度控制现状，提出对在室内以气体为工作介质的试验流程中引用双压法气体湿度发生装置，从而获得已知湿度的工作气体进行岩心的常规试验．岩心电阻率测量的实验数据表明，控制工作气体的湿度，可提高试验结果的准确性．     

常绿植物SOD活性与植物耐寒力相关性的研究

本实验研究了6种常绿植物越冬期间,在植株正常生长情况下,各因子共同作用对常绿植物SOD活性的影响。结果表明：六种常绿植物越冬期间SOD活性变化曲线均呈“M”状,并不随环境温度降低而持续下降;常绿植物抗寒力与植物内源SOD活性水平密切相关,呈种间特异性。     

三要素法的适用对象

指出三要素适用对象是电容电压或电感电流，而一些献对此有所误解。     

Performance of PAHs emission from bituminous coal combustion

Carcinogenic and mutagenic polycyclic aromatic hydrocarbons (PAHs) generated in coal combustion have caused great environmental health concern. Seventeen PAHs (16 high priority PAHs recommended by USEPA plus Benzo[e]pyrene) present in five raw bituminous coals and released during bituminous coal combustion were studied. The effects of combustion temperature, gas atmosphere, and chlorine content of raw coal on PAHs formation were investigated. Two additives (copper and cupric oxide) were added when the coal was burned. The results indicated that significant quantities of PAHs were produced from incomplete combustion of coal pyrolysis products at high temperature, and that temperature is an important causative factor of PAHs formation. PAHs concentrations decrease with the increase of chlorine content in oxygen or in nitrogen atmosphere. Copper and cupric oxide additives can promote PAHs formation (especially the multi-ring PAHs) during coal combustion.     

爱国主义是实现第一次国共合作的思想基础

国共两党都有争取民族独立的思想，都主张祖国统一、民族团结，向西方学习，振兴中华，都支持被压迫民族和国家反帝斗争，这四个方面都以爱国主义为核心，并成为实现第一次国共合作的思想基础。     

电工学全英语教学探索与实践

论文根据电工学课程的全英语教学研究与实践,从课程的定位、教材的选定、有效的教学方法等方面进行了探讨。全英语教学应该根据学生的英语水平、学生对课程的期望设立合理可行的教学目标。并采用循序渐进的方法,辅之以有效的教学方法,培养学生的专业素养,拓展学生的国际化视野,实现专业知识和外语知识的有机结合。     

对县级地域开展现代远程教育的几点思考--兼析"人才培养模式改革和开放教育试点"在县级电大的实践与探索

在县级地域开展现代远程教育，适应了经济建设和社会发展对人才的需求，是构建学习型社会、提高县级地域人口素质的重要途径。县级电大在开展现代远程教育方面具有系统优势、网络优势和服务优势；县级地域开展现代远程教育要以县级电大为依托，在实施过程中要坚持质量第一。     

基于数据仓库的CRM应用研究

客户关系管理（CRM）逐渐成为企业的焦点，也是数据仓库技术的重要应用领域，本文介绍了客户信息管理以及数据仓库技术，分析了数据仓库技术在CRM中的应用；阐述了目前数据仓库应用面临的困境；并从应用及技术的层面，分析了成功实现基于数据仓库的CRM的关键点．