计算机课程多媒体课件制作中屏幕捕捉技术的应用     

刘洋  何婷婷 《南通职业大学学报》2006,20(1):102-104

介绍了计算机课程教多媒体课件制作中视频素材文件的采集方法:通过camtasia这一屏幕捕捉软件,进行视频录制和视频编辑,简单易行。  相似文献   

在网络教学课件中关于习题练习与在线测试功能的设计与实现   总被引：12，自引：0，他引：12  

王秋云 《电化教育研究》2001,(5)

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谈谈非线性编辑的发展趋势     

李进 《金陵科技学院学报(社会科学版)》1999,(1)

电教使用的非线性编辑系统有着自己发展的特殊路径,如何有效合理地使用有限资金,发展电教设备．本文作了一个粗浅的分析,以供有关部门和同行共同探讨。  相似文献   

媒介竞争、选举竞争和公共产品供给   总被引：1，自引：0，他引：1  

刘成奎 《中国软科学》2010,(5)

不同阶层或地区之间的公共产品供给经常不均衡,媒介竞争与媒介捕获导致的各阶层、各地区之间信息分布的不均衡是重要根源.媒介声望竞争有助于媒介提供广泛与差异化的信息,而媒介经济利益竞争会引致媒介信息偏好高收入群体,特别是容易诱发媒介捕获,由此会导致媒介信息偏好特定利益人.媒介信息的失真导致政府官员偏好高可见度公共产品的供给,从而引致政府的公共产品决策偏向于高收入群体或特定利益人.大力发展媒介产业、建立媒介自律与重视声望机制、重视对官员任用的声望考评、保留或建立公益性媒介机构是扭转公共产品供给失衡的有效对策.  相似文献   

专题性英语口语教学语料库的建设     

赵宏展 《山东教育学院学报》2009,24(3):95-97

通用口语语料库由于自身可及性和数据冗余的原因,难以和口语教学实践相结合,教师个人可以自建小型口语语料库辅助口语教学。本文探讨个人自建口语语料库在英语口语教学中的应用优势及其理论和实践基础,从语料选取、标注工具制作和语料整合三个方面描述其创建过程。  相似文献   

人体无线内窥微机电系统设计中若干关键问题     

陈英俊 《茂名学院学报》2009,19(1):45-48

研究讨论了人体无线内窥微机电系统设计中的若干关键问题,包括电源系统的设计问题,无线发射电路的设计问题,图像采集与保存问题。在它们的设计过程中,综合考虑了无线内窥微机电系统的性能、功耗与尺寸要求,并都给出了合理的最终解决方案。  相似文献   

Lower leg and foot contributions to turnout in female pre-professional dancers: A 3D kinematic analysis     

Sarah L. Carter  Rebekha Duncan  Andries L. Weidemann  Luke S. Hopper 《Journal of sports sciences》2018,36(19):2217-2225

Turnout is a central element of classical ballet which involves sustained external rotation of the lower limbs during dance movements. Lower leg and foot compensation mechanisms which are often used to increase turnout have been attributed to the high incidence of lower limb injury in dancers. Evaluation of dancers’ leg posture is needed to provide insight into the lower limb kinematic strategies used to achieve turnout. The primary purpose of this study was to use 3D kinematic analyses to determine the lower leg and foot compensations that are incorporated by female university dancers to accentuate their turnout. Active and passive external tibiofemoral rotation (TFR) was also measured. A moderate-strong negative relationship was observed between hip external rotation (HER) and foot abduction in the three first position conditions. A moderate negative relationship was found between passive TFR and foot abduction in all first position conditions. Our findings suggest dancers are more likely to pronate, than rotate the knee to compensate for limited HER. Dancers with a limited capacity to pronate may force additional rotation via the knee. Ongoing research would benefit from more in-depth analyses of the foot/ankle complex using a multi-segment foot model.  相似文献   

Kinematic analysis of proximal-to-distal and simultaneous motion sequencing of straight punches     

Philip Xaver Fuchs  Stefan Josef Lindinger  Hermann Schwameder 《Sports biomechanics / International Society of Biomechanics in Sports》2018,17(4):512-530

Consecutive proximal-to-distal sequencing of motion is considered to be integral for generating high velocity of distal segments in many sports. Simultaneous usage of proximal and distal segments as seen in martial arts is by far less well investigated. Therefore, the aim of the study was to characterise and differentiate the concepts of consecutive (CSM) and simultaneous (SSM) sequence of motion in straight reverse punches as practised in Practical Wing Chun. Four experienced martial artists succeeded an eligibility test for technical proficiency in both concepts and performed a total number of 20 straight punches per concept. Eight MX13 Vicon cameras (250 fps) and Visual3D were used for motion capture and analyses. Both motion concepts showed proximal-to-distal sequencing of maximal joint velocities but, in SSM, this was coupled with simultaneous initiation. Key characteristics were: high pelvis momentum and backswing of shoulder and elbow (CSM); and importance of shoulder involvement (SSM). Different ranges of motion, timing aspects and achieved maximal angular velocities distinguished both concepts, which led to differences (p < 0.05) in fist velocity at contact, execution time, distance and horizontal shift of the centre of mass. Proper application of both concepts depends on the environmental setting, situational requirements and individual fighting style.  相似文献   

基于专利引用的碳捕获与封存技术发展研究     

苗红  张伟  黄鲁成 《情报杂志》2013,(1):27-32

碳捕获与封存(CCS)技术是一项新兴的低碳技术,把握CCS技术的发展过程及发展趋势对于企业研发投资、对于低炭技术相关产业的发展具有重要意义。针对目前这一领域研究的不足,提出了基于专利引用分析方法的研究思路,即选取USPTO专利库,运用专利发展路径识别算法从专利引用的角度,绘制CCS技术发展图,识别CCS主要发展路径;并按不同发展阶段的CCS技术状态截面图分析CCS技术的特征和发展路径。研究发现了CCS领域的主要技术、发展路径特点、发展趋势及热点。  相似文献   

基于Web的天气预报系统设计与实现     

沙科君 《宁波广播电视大学学报》2007,5(4):115-117

发布在网站上的天气预报信息,为人们的生产、生活提供了很多方便,因此深受广大网民的关注。本文通过设计一个基于WEB的天气预报系统,对系统所需的cookie值设置、数据采集、数据库存取模块进行分析与实现。  相似文献