基于空洞模型的地理位置路由改进算法研究

针对现有WSN中地理位置路由遇路由空洞后会产生冗余路由的问题,提出一种基于感知空洞形状的分段贪婪路由(Easy Modeling Greedy Routing,EMGR)算法。EMGR引入虚拟坐标概念,利用空洞边界探测包收集空洞边界节点信息,将其映射到虚拟坐标系中;根据空洞边界节点在虚拟坐标系的不同分布,定义凹、凸域来概括路由空洞形状;根据不同的空洞形状找到合适的中转节点,采用分段贪婪路由方式传输数据。仿真实验结果表明,相较于GPSR算法,EMGR算法产生的路由跳数减少了35%,网络能耗低,路径扩张率和网络时延小。     

A built-in test pattern generator

Built-in testing is currently of more concern due to the difficulties in testing a VLSI byusing an external tester.In addition,Built-In Testing is also necessary for on-line testing and afault-tolerant computing system.Using a Linear Feedback Shift Register(LFSR)as a built-intest pattern generator(BITPG)is a realistic and simple approach.An LFSR with maximumlength can generate pseudo-random test patterns or all non-null vectors for exhaustive testing.This paper presents an LFSR design with non-maximum length to serve as a BITPG to generatea given test set T,which efficiently saves testing time.A search-verification process fordesigning this kind of LFSR is employed and implemented by the program SVBITPG.Thispaper presents the diagram of tire program and gives stone examples to illustrate the design ofthe BITPG.     

ENERGY MANAGEMENT AND CONTROL TECHNOLOGY IN THE NONFERROUS METALS INDUSTRY

ＥＮＥＲＧＹＭＡＮＡＧＥＭＥＮＴＡＮＤＣＯＮＴＲＯＬＴＥＣＨＮＯＬＯＧＹＩＮＴＨＥＮＯＮＦＥＲＲＯＵＳＭＥＴＡＬＳＩＮＤＵＳＴＲＹＥＮＥＲＧＹＭＡＮＡＧＥＭＥＮＴＡＮＤＣＯＮＴＲＯＬＴＥＣＨＮＯＬＯＧＹＩＮＴＨＥＮＯＮＦＥＲＲＯＵＳＭＥＴＡＬＳＩＮＤ...     

吸收剂量对二甲基硅橡胶与甲基乙烯基硅橡胶分子量产凝胶含量…

将ＧＰ和特性粘数［η］测定相结合，在室温和－７８℃下，用Ｃｏ＾６０辐射源辐照，研究了二甲基硅橡胶（ＭＱ，吸收剂量２．０５×１０＾３－３．９７×１０＾４Ｇｙ）和甲基乙烯基硅橡胶（ＭＶＱ，吸收剂量１０＾２－１０＾４Ｇｙ）分子量和凝胶含量的变化。结果表明，辐照ＭＶＱ较辐照ＭＱ易生成凝胶，在凝胶点前的较低吸收剂量时，溶胶的分子量出现极大值，分子量分布曲线呈单峰，随吸收剂量的增加，分子量分布变窄，分子量降低     

Exploiting Ontology for Software License Agreements

Software end-users need to sign licenses to seal an agreement with the product providers. Habitually, users agree with the license (i.e. terms and conditions) without fully understanding the agreement. To address this issue, an ontological model is developed to formulate the user requirements and license agreements formally. This paper, introduces ontological model that includes the abstract license ontology of common features found in di?erent license agreements. The abstract license ontology is then extended to a few real world license agreements. The resulting model can be used for di?erent purposes such as querying the appropriate licenses for a speciˉc requirement or checking the license terms and conditions with user requirements.     

无铅无乙基硫脲氯醚橡胶硫化体系的开发

由于健康和环境方面的原因，在欧洲，氯醚橡胶是不允许使用含铅和乙基硫脲的硫化体系的。因此，研发无铅无乙基硫脲的硫化体系迫在眉睫。通过使用特殊的商业化的材料，可使氯醚混炼胶的物理机械性能、耐热老化性、耐燃油性能、贮存稳定性及成本均达到或超过含铅硫化体系的氯醚混炼胶。新研发的无铅无乙基硫脲硫化体系氯醚胶的贮存期至少可以达到7周。同时，这些无铅无乙基硫脲硫化体系氯醚胶的材料成本与含铅硫化体系的相当。     

Protein interaction networks: centrality,modularity, dynamics,and applications

In the post-genomic era, proteomics has achieved significant theoretical and practical advances with the development of high-throughput technologies. Especially the rapid accumulation of protein-protein interactions (PPIs) provides a foundation for constructing protein interaction networks (PINs), which can furnish a new perspective for understanding cellular organizations, processes, and functions at network level. In this paper, we present a comprehensive survey on three main characteristics of PINs: centrality, modularity, and dynamics. 1) Different centrality measures, which are used to calculate the importance of proteins, are summarized based on the structural characteristics of PINs or on the basis of its integrated biological information; 2) Different modularity definitions and various clustering algorithms for predicting protein complexes or identifying functional modules are introduced; 3) The dynamics of proteins, PPIs and sub-networks are discussed, respectively. Finally, the main applications of PINs in the complex diseases are reviewed, and the challenges and future research directions are also discussed.     

Method Based on Time Randomization to Resist Fault Sensitivity Analysis

A fault sensitivity analysis (FSA)-resistance model based on time randomization is proposed. The randomization unit is composed of two parts, namely the configurable register array (R-A) and the decoder (chiefly random number generator, RNG). In this way, registers chosen can be either valid or invalid depending on the configuration information generated by the decoder. Thus, the fault sensitivity information can be confusing. Meanwhile, based on this model, a defensive scheme is designed to resist both fault sensitivity analysis (FSA) and differential power analysis (DPA). This scheme is verified with our experiments.