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本文通过牛视紫质蛋白质晶体结构使用Composer模建程序进行了人类μ阿片受体的同源模建,预测了μ阿片受体的二级结构,用Ramachandran图和ProTable验证模型的可靠性.得到的模型91%的氨基酸残基位丁最佳区域,7个疏水区域表明有7个跨膜区与模型一致.并使用Surflex-Dock程序进行一系列芬太尼类似物分子与μ阿片受体的对接研究进而研究了其作用机制.活性位点主要包括ILE109,ASP112,TYR113,MET116,HIS262,TYR291.这些氨基酸残基都是芬太尼类似物与μ阿片受体的相互作用的主要残基.对接打分较高的分了均为与活性位点结合较好的分子,由此可对μ阿片受体有更深入的了解从而为设计出活性更高的芬太尼类化合物提供依据. 相似文献
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郑崯 《电视字幕·特技与动画》2010,16(2)
本文结合具体案例,详细介绍在Avid Media Composer软件里的多机位剪辑方式的使用,并对这种剪辑方式的应用方法做拓展的探讨。 相似文献
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Yasar Khan Toqeer Ali Megat Fariz Fernando Moreira Frederico Branco José Martins Ramiro Gonçalves 《Expert Systems》2020,37(3):e12507
An electronic business transaction among untrusted bodies without consulting a mutually trusted party has remained widely accepted problem. Blockchain resolves this problem by introducing peer-to-peer network with a consensus algorithm and trusted ledger. Blockchain originally introduced for cryptocurrency that came with proof-of-work consensus algorithm. Due to some performance issues, scientists brought concept of permissioned Blockchain. Hyperledger Fabric is a permissioned Blockchain targeting business-oriented problems for industry. It is designed for efficient transaction execution over Blockchain with pluggable consensus model; however, there is limitation of rapid application development. Hyperledger introduced a new layer called Hyperledger Composer on top of the Fabric layer, which provides an abstract layer to model the business application readily and quickly. Composer provides a smart contract to extend the functionality and flexibility of Fabric layer and provides a way of communication with other systems to meet business requirements. Hyperledger Composer uses role-based access control (RBAC) model to secure access to its valuable assets. However, RBAC is not enough because many business deals require continuous assets monitoring. Our proposed model, BlockU, covers all possible access control models required by a business. BlockU can monitor assets continuously during transactions and updates attributes accordingly. Moreover, we incorporate hooks in Hyperledger Composer to implement extended permission model that provides extensive permission management capability on an asset. Subsequently, our proposed enhanced access control model is implemented with a minimal change to existing Composer code base and is backward compatible with the current security mechanism. 相似文献
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针对工业现场复杂背景下镁熔液中弱小目标的检测问题,提出了基于DM642的镁熔液中弱小目标检测算法优化方法,旨在实现检测算法运行的高效性和运算速度的高速性。方法以高性能数字媒体处理器DM642为核心,以DSP集成开发软件Code Composer Studio 3.3为辅助,以工业现场复杂镁熔液中的弱小目标检测为载体,利用C编译器,主要从预处理算法和软件优化两方面对镁熔液中弱小目标的检测算法进行优化研究。结果表明,经过优化的检测算法在速度和稳定性等方面均得到了明显提高,解决了弱小目标检测算法中结构复杂和运算速度慢的问题,为实现工业现场弱小目标的实时检测奠定了基础。 相似文献
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色彩调整的方式和思路有很多,本文以Avid Media Composer为例,叙述一种分阶段校色的方法.此方法将校色分为四个阶段:亮度范围调整,色调调整,镜头间影调一致性调整,形成影片总体风格调整.分阶段、分步骤地完成画面的校色工作,可以使繁琐的校色过程思路清晰、目标明确、有章可循,从而更好地完成校色任务. 相似文献
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本文介绍了Avid Media Composer5基本调色技巧,使画面偏向于另一种色调的处理.同时,也给学习者发挥的空间,使画面表达不同的含义. 相似文献