视频采集中丢帧的原因及解决办法     

刘迎春  ZHAO Ai-tao  赵爱涛 《石家庄职业技术学院学报》2008,20(2):76-77

视频采集是数字媒体设计及影视制作中不可或缺的关键步骤,视频采集的质量好坏直接影响作品的后期制作,而在视频采集及影视制作中丢帧现象是较为常见的一个问题.常见丢帧现象往往是由于硬件、软件、DV带本身或节目回录造成的,要避免丢帧现象需优化操作系统和硬盘,使用兼容性较好的计算机.  相似文献   

民事执行听证问题初探     

胡家强  朴振吾  李鹏飞 《山东商业职业技术学院学报》2008,8(1):79-83

目前许多法院实行了民事执行听证制度,但存在职权主义严重,缺乏必要适用范围标准等缺欠。为此,应明确民事执行听证的主体;在适用范围上坚持实体争议原则上不适用听证,重大程序性事项应予听证,并对“其他”应予听证的事项做严格限定;确立效率优先、兼顾公正、相对保护债权人等民事执行听证原则;同时,对民事执行听证的启动、运行及其规则做出全面的设计安排。  相似文献   

系统框架下的顾客关系资产管理   总被引：1，自引：0，他引：1  

赵永刚  牟嫣 《预测》2007,26(4):49-53

关系资产是近年来随着关系营销理论和实践的发展所出现的一种新观点。本文首先讨论企业中关系资产的系统框架,然后着重在该框架下,从策略、流程、组织、评估、技术的角度来讨论顾客关系资产的系统管理问题。  相似文献   

建设具有成人教育特色的专业模块课程体系   总被引：1，自引：0，他引：1  

徐宁  刘凤菊 《成人教育》2008,(5):81-82

为了满足成人学生的多目标需求,本文以“平台＋模块”课程体系结构为例论述了基于成人高等专业教育特色的模块课程建设的基本原则,分析了模块课程设置的基本结构,并以实例探讨了模块课程体系建设过程中遇到的主要难题的处理方法。  相似文献   

Numerical Simulation of Dynamic Response and Collapse for Steel Frame Structures Subjected to Blast Load   总被引：4，自引：0，他引：4  

ZHANG Xiuhua    DUAN Zhongdong  ZHANG Chunwei 《天津大学学报(英文版)》2008,(Z1)

The progressive collapse of steel frame structures under the blast load was investigated using LS-DYNA. The multi-material Eulerian and Lagrangian coupling algorithm was adopted. A flu-id-structure coupling finite element model was established which consists of Lagrange element for simulating steel frame structures and concrete ground, multiple ALE element for simulating air and TNT explosive material. Numerical simulations of the blast pressure wave propagation, struc-tural dynamic responses and deformation, and progressive collapse of a five-story steel frame structure in the event of an explosion near above ground were performed. The numerical analysis showed that the Lagrangian and Eulerian coupling algorithm gave good simulations of the shock wave propagation in the mediums and blast load effects on the structure. The columns subjected to blast load may collapse by shear yielding rather than by flexural deformation. The columns and joints of steel beam to column in the front steel frame structure generated enormous plastic defor-mation subjected to intensive blast waves, and columns lost carrying capacity, subsequently lead-ing to the collapse of the whole structure. The approach coupling influence between struc-tural deformation and fluid load well simulated the progressive collapse process of structures, and provided an effective tool for analyzing the collapse mechanism of the steel frame structure under blast load.  相似文献   

Numerical Simulation of Dynamic Response and Collapse for Steel Frame Structures Subjected to Blast Load     

ZHANG Xiuhua  DUAN Zhongdong  ZHANG Chunwei 《天津大学学报(英文版)》2008,14(1)

The progressive collapse of steel frame structures under the blast load was investigated using LS-DYNA.The multi-material Eulerian and Lagrangian coupling algorithm was adopted.A fluid-structure coupling finite element model was established which consists of Lagrange element for simulating steel frame structures and concrete ground,multiple ALE element for simulating air and TNT explosive material.Numerical simulations of the blast pressure wave propagation,structural dynamic responses and deformation,and progressive collapse of a five-story steel frame structure in the event of an explosion near above ground were performed.The numerical analysis showed that the Lagrangian and Eulerian coupling algorithm gave good simulations of the shock wave propagation in the mediums and blast load effects on the structure.The columns subjected to blast load may collapse by shear yielding rather than by flexural deformation.The columns and joints of steel beam to column in the front steel frame structure generated enormous plastic deformation subjected to intensive blast waves,and columns lost carrying capacity,subsequently leading to the collapse of the whole structure.The approach coupling influence between structural deformation and fluid load well simulated the progressive collapse process of structures,and provided an effective tool for analyzing the collapse mechanism of the steel frame structure under blast load.  相似文献   

基于集成框架的企业知识创新模式研究   总被引：6，自引：0，他引：6  

蒋翠清  杨善林  郭子伦 《科学学与科学技术管理》2007,28(1):60-65

在回顾知识创新主要研究成果的基础上，系统分析了与企业知识创新相关的企业战略、知识愿景、创新过程、知识资产、创新空间和商业模式等活动和要素，探讨了这些要素和活动之间的关系。在此基础上，构建了基于集成框架的企业知识创新模式。  相似文献   

框架扰动的一些注记     

朱秀阁  郭运瑞 《河南科技学院学报》2007,35(3):102-103

文献[1]中的框架概念和主要结果之一（定理1）及对它的论证值得商榷。本文指出它的不足和欠明晰之处，并对其进行了澄清，给出了正确论证。  相似文献   

多功能薄膜干涉实验装置的应用          下载免费PDF全文

潘章 《唐山学院学报》2017,30(3):9-12

在常规实验装置的基础上设计安装了一个光具架,由此制成了一种多功能薄膜干涉实验装置。在该装置上不仅可以完成常规的牛顿环实验,还可完成劈尖干涉实验和多种扩展实验,解决了在单一薄膜干涉实验装置上只能完成一种实验的弊端。  相似文献   

基于遗传算法的阵列相位误差校正     

刘颖 《天津工程师范学院学报》2007,17(3):26-28,32

针对声纳水听器阵列比较突出的相位误差,研究了一种基于遗传算法的阵列校正方法。该方法利用无相位误差时阵列协方差矩阵具有Toeplitz结构的特性构造代价函数,并以此作为遗传算法中进化个体的适应度函数,由算法搜索的最优个体得到阵元相位误差的估值。计算机仿真结果表明,该方法可以明显地减小阵列相位误差对MUSIC算法DOA估计结果的影响。  相似文献