区域标志性建筑形象塑造的思考——以中国金融信息大厦和上海长风跨国采购中心为例

文章针对影响城市区域景观关键因素的区域标志性建筑形象设计问题,从区域标志性建筑概念界定入手,在区域标志性建筑形象的立意、调控、造型、审美四个方面,阐释塑造区域性标志建筑形象的设计要点,并以中国金融信息大厦及上海长风跨国采购中心为例进行探讨。     

基于增量符号相关的缺陷检测方法

传统的规格化互相关算法在计算机视觉领域中用得较多,但其运算速度不能满足实时检测要求.用基于增量符号相关的算法对两幅图像间的缺陷进行检测可有效地缓解规格化互相关算法计算量大的问题.通过图像像素值间的大小比较得到增量图像后,计算出增量符号相关值,将它显示为与相关值成正比的亮度值就得到了检测结果图像.实验证明该方法在图像有亮度或对比度变化时仍能正确地检测出缺陷位置.     

Molecular composition of in-situ combustion and steam assisted gravity drainage crude oils

This study investigated the property and composition of crude oils from in-situ combustion (ISC) and steam assisted gravity drainage (SAGD). We made comparison of the elemental composition and molecular weight distribution of the two crude oils. It was overserved that ISC crude oil has significant higher oxygen content. The ultra-high resolution mass spectrometry was applied to investigate the molecular composition of acidic compounds in two crude oils. The acidic compounds in ISC crude oil have higher carbon numbers than that of SAGD crude oils.     

间接转矩控制的仿真研究

针对DTC在低速状态存在的转矩脉动大的问题,引入了间接转矩控制(ISC),深入研究了ISC控制器的算法,并在仿真的基础上对两种控制策略在低速状态下的特性进行了对比研究,证明了其优良的性能。     

Molecular Details of the Frataxin–Scaffold Interaction during Mitochondrial Fe–S Cluster Assembly

Iron–sulfur clusters are essential to almost every life form and utilized for their unique structural and redox-targeted activities within cells during many cellular pathways. Although there are three different Fe–S cluster assembly pathways in prokaryotes (the NIF, SUF and ISC pathways) and two in eukaryotes (CIA and ISC pathways), the iron–sulfur cluster (ISC) pathway serves as the central mechanism for providing 2Fe–2S clusters, directly and indirectly, throughout the entire cell in eukaryotes. Proteins central to the eukaryotic ISC cluster assembly complex include the cysteine desulfurase, a cysteine desulfurase accessory protein, the acyl carrier protein, the scaffold protein and frataxin (in humans, NFS1, ISD11, ACP, ISCU and FXN, respectively). Recent molecular details of this complex (labeled NIAUF from the first letter from each ISC protein outlined earlier), which exists as a dimeric pentamer, have provided real structural insight into how these partner proteins arrange themselves around the cysteine desulfurase, the core dimer of the (NIAUF)₂ complex. In this review, we focus on both frataxin and the scaffold within the human, fly and yeast model systems to provide a better understanding of the biophysical characteristics of each protein alone and within the FXN/ISCU complex as it exists within the larger NIAUF construct. These details support a complex dynamic interaction between the FXN and ISCU proteins when both are part of the NIAUF complex and this provides additional insight into the coordinated mechanism of Fe–S cluster assembly.     

异步电机快速转矩控制研究

介绍了间接转矩控制（ISC）的基本原理,并通过动态磁场削弱技术和SVPWM过调制技术,将间接转矩控制由低速区扩展到全速度区。在仿真基础上,对所提出的算法和传统的直接转矩控制算法所得磁链茄转矩波形进行了对比。结果显示：动态磁场削弱技术的应用,会使转矩响应时间缩短,控制系统响应速度加快,从而证明了异步电机快速转矩控制算法具有良好的转矩和电流控制性能。     

嵌入式Linux环境下DHCPv6服务的实现

随着网络技术的飞速发展,嵌入式设备对于下一代互联网协议IPv6的支持成为必然要求,而实现IPv6地址自动配置的DHCPv6服务也就成为一个关键性问题。本文介绍了IPv6和DHCPv6的相关技术特点,并以HH6410开发板为客户端．以PC机为服务端在一个IPV6网络内实现了客户端嵌入式设备的DHCPv6服务。     

从航运业的发展规律解读“国际航运中心”的内涵

针对目前国内关于国际航运中心的概念及相关理论存在的缺陷及其原因进行剖析,采用历史与逻辑相统一的方法,从港口的发展规律、航运产业核心竞争力及航运活动的特点等多个角度,探讨国际航运中心的本质特征。在此基础上,得出高度发达的航运服务业是国际航运中心最本质的特征这一结论,并对国际航运中心进行了重新定义。     

基于微分算子的局部特征尺度分解方法及其应用

针对局部特征尺度分解（LCD）方法在目标信号所含频率分量较接近时分解能力降低,易出现模态混淆现象,从而导致内禀尺度分量失去原有物理意义的问题,提出了基于微分算子的局部特征尺度分解（DOLCD）。DOLCD在对目标信号进行分解前,先将目标信号进行一阶微分,则在频率比一定的情况下,可提升分解能力及抑制模态混淆能力。研究了DOLCD方法的原理,通过仿真信号模型将DOLCD与LCD的分解能力进行对比分析,结果表明,DOLCD方法在提高分解能力,抑制模态混淆等方面具有一定的优越性,并将DOLCD方法应用于转子不对中故障的诊断,结果表明该方法有效。     

分布式FMS的非递阶调度控制

针对ＦＭＳ车间调度控制问题提出一种分布式协同调度控制的思想，从而简化了控制结构，降低了复杂性，提出了系统的容错能力及其柔性。在该模型中存在多个生产实体，不同的实体前置有一个智能协调控制器（ＩＳＣ），通过广播协商机制达到自组织和自决策。所有的智能协调控制器并发运行，以完成整修车间的在线调度控制，该系统避免了传统的集中调度控制的许多缺点，为实现柔性车间调度控制探索了一条新的途径。