主动雷达终端实时仿真软件的设计与实现

在主动雷达数据回放显示的基础上,通过使用D irectDraw和Intel IPP技术,设计了主动雷达终端实时仿真软件,包括信号处理、数据处理及终端显示等模块,极大地提高了软件的执行效率,使得整个仿真过程具有良好的实时性。本文介绍了该软件的设计及实现。     

Malaysia’s electricity market structure in transition

The Malaysian electricity industry evolved from a vertically integrated utility into a single-buyer model, which considered a precursor to deregulation and a competitive market. This study considers electricity sector reform in Malaysia and proposes a market structure for the industry. We focus on the single-buyer model and the pool model for the analysis with the recommendation on reform stages required to ensure a smooth and successful market transition. A smooth transition from regulated market into deregulated market will ensure market stability and sustainability of the energy market. It will also provide enough time for the market participants to adapt and transit from regulated to deregulated energy market.     

基于SEM的贵州黔南红粘土微观结构研究

为了揭示红粘土的微观结构特征,通过现场调查取样、扫描电镜测试、IPP图像处理技术及数理统计等手段,对黔南地区红粘土的定量结构特征进行了研究。结果表明,红粘土矿物结构的主要形态不均匀,颗粒和团聚体的排列基本无序;通过红粘土孔隙率丰度的测定,孔隙结构呈球形不规则排列;红粘土的微孔结构具有明显的分形特征。IPP图像处理技术能够快速有效地对土壤微观结构特征进行定量分析,分形理论为红粘土孔隙微观结构研究提供了新的思路。     

Economic evaluation of independent power producers viewed from total generating costs of electric power systems

In Japan, electric power utilities purchase electricity from independent power producers (IPPs) through competitive bidding; the IPP evaluation is based on the avoided costs of corresponding generators of utilities. In this evaluation, however, nonpricing factors such as power flow constraints in the electric power system cannot be considered. In this paper, we propose a new approach to evaluate economic impacts of IPPs, the IPP electricity being priced on the basis of total generating costs of the electric power utilities. Such a price to purchase the electricity of IPPs is referred to as the “break‐even cost.” The main results are summarized as follows: 1) Break‐even cost depends on not only the power flow constraints in the system, but also various IPP factors such as generating pattern, location, and capacity, 2) Break‐even cost for the base‐type IPP is higher than the avoided cost of corresponding utility generators, because IPPs located on demand sides can reduce the transmission power loss in the electric power system, 3) Break‐even cost is affected by available capacity of utility generators, especially for the peak‐type IPP generating only during peak demand periods. © 2000 Scripta Technica, Electr Eng Jpn, 133(2): 20–30, 2000     

Cloning and sequence analysis of the Pichia pastoris TRP1, IPP1 and HIS3 genes

The Pichia pastoris TRP1 and HIS3 genes were cloned by complementation of the Saccharomyces cerevisiae trp1 and his3 mutants, respectively, and their nucleotide sequence was determined. The P. pastoris TRP1 gene includes an open reading frame (ORF) of 714 nucleotides corresponding to a polypeptide of 237 amino acids whose sequence shares about 40% identity with that of TRP1 encoding proteins in other yeast species. DNA sequencing showed that an ORF of 858 nucleotides, encoding a protein of 285 amino acids with high homology to inorganic pyrophosphatases (IPP1), is located downstream of the P. pastoris TRP1 gene. Both genes converge in this chromosomal region, showing a genetic organization analogous to that found in the Kluyveromyces lactis genome. The P. pastoris HIS3 gene possesses an ORF of 675 nucleotides, encoding a polypeptide of 224 amino acids which shows 74·1% identity to the homologous S. cerevisiae protein. The hexameric consensus GCN4 binding sequence (TGACTC), characteristic of many amino acid biosynthetic genes, is present in the promoter region. The TRP1 and IPP1 sequences were deposited in the EMBL databank under Accession Number AJ001000. The Accession Number of the HIS3 gene is U69170. © 1998 John Wiley & Sons, Ltd.     

MA与IPP的接枝反应

MA与 IPP在溶剂存在下进行了接枝反应。结果发现 ,反应产物的接枝率随反应温度、MA含量及引发剂浓度的增加而增加 ,而分子质量随引发剂浓度的增加而减小。反应产物用 IR与 DSC作了表征     

低分子量无规聚丙烯与商用聚丙烯复合材料的紫外荧光性能

通过将分子量无规聚丙烯（LMWAPP）与商用等规聚丙烯（IPP）共混,研究其发光性能,结果表明,低分子量无规聚丙烯对聚丙烯的发光起着重要作用,着聚丙烯中LMWAPP含量的增加,聚丙烯发光强度增加,当LMWAPP含量超过30％时,发光强度达到饱和。     

一类可用于构造IPP码的纠错码

IPP(identifiable parent property)码可构造用于版权保护的数字指纹(data fingerprint),文中给出了利用纠错码构造IPP码的充分条件,并给出了码字总数的上限．给出的充分条件不但为利用纠错码构造IPP码提供了理论基础,而且为IPP码构造的数字指纹用于版权保护提供了应用基础．     

主动信息服务及其系统设计研究

信息系统是一种人机系统,计算机系统作为服务提供者应该提高其主动服务的自动化程度,即机器的主动工作能力—主动可用性。文章引入主动度、兴趣度等概念评价系统的性能指标,同时介绍了智能化的方法与技术进行主动信息服务系统的设计和实现。     

基于IPP的嵌入式音频解码器设计与优化

本文从Intel公司的IPP工具对基于特定处理器的音频编解码优化方案出发,简要介绍IPP的嵌入式移植应用与API编程规范以及优化步骤.完成了在IntelXScalePXA255PDA上,利用Linux下Qte/QtopiaGUI开发环境,通过IPP优化,完成音频解码器的设计与实现。