中小电视台媒体资产管理系统研究与应用

广播电视行业经过几十年的发展,积累下许多珍贵的多媒体资料,如何充分利用这些资源,一直是广电行业所关注的重点.随着各级电视台非编网络的相继建成与完善,提出了媒体资产管理这一新概念和技术领域,它是对媒体资产进行其寿命期内全面管理的总体解决方案。由于媒体资产管理在构成、特点、需求等方面与常规产业资产管理有较大区别,本文特针对目前绝大多数中小电视台实际情况,研究并提出媒体资产管理的解决方案。     

改进的复合材料斜接结构胶层应力半解析法

引入微分概念和复合材料铺层刚度分配原则,形成一种改进的求解复合材料斜面对接结构胶层应力的半解析方法 MAM(Modified semi-Analytical Method)。首先,针对铺层角度及铺层数不一致的情况,采用有限元法(FEM)平面应变模型对MAM进行验证;然后,分别用平均剪应力法、FEM及MAM预测了复合材料斜接结构的承载能力并与试验值进行对比;最后,利用MAM分析工程应用问题,考虑了被粘结体刚度不匹配及胶层厚度的变化。研究结果表明:MAM适于设计复合材料斜接结构;采用MAM能得到胶层应力的尖峰值,且应力分布与FEM计算一致。     

媒体资产管理系统中的视频图像质量评价研究

首先介绍了图像质量的主观评价和客观测量方法,具体分析了双刺激连续质量标度法和双刺激损伤标度法,根据媒资系统中各种视频图像的不同特点,针对性地提出了对应的图像质量评价方法,为当前电视台媒资系统性能的测试与评价提供参考。     

县市级电视台媒体资产管理系统中存储子系统的设计

分析了当前数字电视和媒体资产管理系统的现状,提出了适合县市级电视台媒体资产管理系统的网络技术和分级存储结构,对每一级的存储介质和存储对象进行了分析,并进行了各级存储容量的设计,为整个电视台提供数字化、网络化的存储平台。     

电视剧缩编网络的研究与设计

介绍了电视剧缩编网络的需求与功能,分析了系统的主要业务流程,构建一个面向电视台全台网的电视剧缩编网络,实现了电视剧入库、上载、检索、编辑、播出、存档一体化管理等功能。     

The effects of pregrafting cotton fabrics with MAA/MAM on the dyeing kinetics of direct dyes in a finite bath

The influence of pregrafting of cotton fabrics with mixed monomer on the dyeing kinetics of direct dyes was investigated. The results of this research show that the equilibrium absorption (a_e) and activation energy (ΔE*) in the dyeing of grafted fabrics are smaller than those of ungrafted fabrics. The experimental results show that the value of the equilibrium absorption is smallest when the molar ratio of MAA/MAM (methacrylic acid/methylacryl amide) is 4/6. However, the rate constant (k′) is larger for grafted fabrics than for ungrafted fabrics. No significant difference was observed between the structural diffusion resistance constant (n) of grafted and ungrafted fabrics. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 65:1139–1142, 1997     

苏州台通过合理配置打造高效媒资系统

目前媒资资产管理系统在电视台的节目生产流程中已经占据了非常重要的地位的问题.为了能使媒资系统更好地为节目生产服务,苏州台通过对各问题节点具体分析,进行配置优化而非追加投资,保证了在投入有限的情况下,成功建设了高效率的媒资系统.实践证明,这次改造取得了很好的效果.     

基于CORBA多代理机制的新型EMS图形Web发布系统

Web发布系统已经成为EMS的必备功能。文中将基于CORBA的多代理技术应用于EMS的图形Web发布系统，使系统变得简洁、易用，做到了真正的跨平台和完全免维护。文中介绍了该系统的设计思想、体系结构，以及多代理机制在图形对象代理、数据库对象代理、事件服务器代理和Web对象代理方面的应用。     

Impact of ER Stress and ER-Mitochondrial Crosstalk in Huntington’s Disease

Accumulation of misfolded proteins is a common phenomenon of several neurodegenerative diseases. The misfolding of proteins due to abnormal polyglutamine (PolyQ) expansions are linked to the development of PolyQ diseases including Huntington’s disease (HD). Though the genetic basis of PolyQ repeats in HD remains prominent, the primary molecular basis mediated by PolyQ toxicity remains elusive. Accumulation of misfolded proteins in the ER or disruption of ER homeostasis causes ER stress and activates an evolutionarily conserved pathway called Unfolded protein response (UPR). Protein homeostasis disruption at organelle level involving UPR or ER stress response pathways are found to be linked to HD. Due to dynamic intricate connections between ER and mitochondria, proteins at ER-mitochondria contact sites (mitochondria associated ER membranes or MAMs) play a significant role in HD development. The current review aims at highlighting the most updated information about different UPR pathways and their involvement in HD disease progression. Moreover, the role of MAMs in HD progression has also been discussed. In the end, the review has focused on the therapeutic interventions responsible for ameliorating diseased states via modulating either ER stress response proteins or modulating the expression of ER-mitochondrial contact proteins.     

Experiment and design methods of composite scarf repair for primary-load bearing structures

A relative thick plate of composite being repaired by scarf bonding was substituted as the scarf joints and studied under tensile load in this paper. The experimental investigation told us the ultimate capability of load and failure mechanism of composite scarf joints. In order to explain failure mechanism for scarf bonding repair of composite structures distinctly, FEM based on continuum damage mechanics (CDM) was carried out. CDM equations were derived by adding the delamination mode and 3D Hashin criteria based on strain into the composite constitutive relation. Furthermore, a modified semi-analytical method (MAM) was developed to obtain shear stress distribution in theory. MAM can improve the accuracy of Harman and Wang method, solve the stress asymmetry, obtain secondary peak of shear stress, and increase the highest peak of stress. In the end, the discussions for the methodologies of MAM, CDM and linear FEM were executed to compare the errors of predicting ultimate load. The discussion revealed that MAM has sufficient accuracy as an analytical methodology which could be utilized to design composite scarf repairs in a short cycle simply.