OALib Journal期刊

ISSN: 2333-9721




2018 ( 2 )

2017 ( 95 )

2016 ( 157 )

2015 ( 1833 )


匹配条件: “ZHOU Yan-zhou” ,找到相关结果约63924条。
Research on the Critical Technologies of Trustworthy Networks

ZHOU Yan-zhou,ZHANG Huan-guo,SONG Yang,

计算机科学 , 2009,
Abstract: The paper analysed some key technology of Trustworthy Networks,and in this paper,three essential properties were proposed and explained to interpret trustworthy of network,namely security,survivability and controllability.Then we went deep into the trustwortyhy networks respectively from the network architecture,trusted model,security access control and the network manager.
Immune Detector Generating Algorithm Based on Self-mutation

CHEN Zhe,ZHOU Yan-zhou,LU Zhi-guo,

计算机科学 , 2010,
Abstract: As a novel branch of computational intelligence,artificial immune system has strong capabilities of information processing and problem-solving paradigm.The detector generation is the key technology in constructing artificial immune system and has been the research hotspot in computational intelligence.This paper analysed the traditional detector generating algorithm.Based on self-mutation mechanism and bland template technology,a self-mutation detector generating algorithm (SMDGA) was proposed.The principle...
Research of Software Reliability Prediction Model Based on AGA-LVQ

QIAO Hui,ZHOU Yan-zhou,SHAO Nan,GAO Yang,SU Deng-yin,
乔 辉
,周雁舟,邵 楠,高 杨,粟登银

计算机科学 , 2013,
Abstract: The prediction accuracy of most current software reliability prediction models is not high. This paper put forward a software reliability prediction model based on AGA-LVQ,which takes advantage of non-linear computing power of the learning vector quantization (LVQ) neural network and parameter optimization capability of the adaptive genetic algorithm (AGA). Firstly,principle components analysis (PCA) preprocessing was used to reduce the dimension of the metrics and remove the redundancy and error data. Secondly, AGA was used to calculate the optimal initial vector weights of the LVQ neural network. Lastly, LVQ neural network was used to do the software reliability prediction experiments. The experiment results indicate that the method has a higher prediction precision than the traditional software reliability prediction model.
P2P Based Improved Design and Implementation of Virtual Ethernet

LI Li-xin,ZHOU Yan-zhou,CHANG Guang-hui,LI Wen-jun,

计算机科学 , 2009,
Abstract: The data processing of traditional C/S mode based virtual Ethernet enters the protocol stack twice,which a-ffects the transmission efficiency of long-distance safety networking to a certain extent.This paper presented an improved virtual Ethernet design based on P2P mechanism,it realizes P2P-based connection among the virtual Ethernet network nodes,which efficiently overcomes such problem of traditional virtual Ethernet.Test results demonstrate that,besides improvement on the efficiency of the system's comm...
The Integrative Taxonomic Approach Reveals Host Specific Species in an Encyrtid Parasitoid Species Complex
Douglas Chesters, Ying Wang, Fang Yu, Ming Bai, Tong-Xin Zhang, Hao-Yuan Hu, Chao-Dong Zhu, Cheng-De Li, Yan-Zhou Zhang
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0037655
Abstract: Integrated taxonomy uses evidence from a number of different character types to delimit species and other natural groupings. While this approach has been advocated recently, and should be of particular utility in the case of diminutive insect parasitoids, there are relatively few examples of its application in these taxa. Here, we use an integrated framework to delimit independent lineages in Encyrtus sasakii (Hymenoptera: Chalcidoidea: Encyrtidae), a parasitoid morphospecies previously considered a host generalist. Sequence variation at the DNA barcode (cytochrome c oxidase I, COI) and nuclear 28S rDNA loci were compared to morphometric recordings and mating compatibility tests, among samples of this species complex collected from its four scale insect hosts, covering a broad geographic range of northern and central China. Our results reveal that Encyrtus sasakii comprises three lineages that, while sharing a similar morphology, are highly divergent at the molecular level. At the barcode locus, the median K2P molecular distance between individuals from three primary populations was found to be 11.3%, well outside the divergence usually observed between Chalcidoidea conspecifics (0.5%). Corroborative evidence that the genetic lineages represent independent species was found from mating tests, where compatibility was observed only within populations, and morphometric analysis, which found that despite apparent morphological homogeneity, populations clustered according to forewing shape. The independent lineages defined by the integrated analysis correspond to the three scale insect hosts, suggesting the presence of host specific cryptic species. The finding of hidden host specificity in this species complex demonstrates the critical role that DNA barcoding will increasingly play in revealing hidden biodiversity in taxa that present difficulties for traditional taxonomic approaches.
Research on revocation of keys in trusted environment

LI Chao-ling,GENG Yu-ying,ZHOU Yan-zhou,LI Fu-lin,LI Li-xin,

计算机应用研究 , 2010,
Abstract: TPM is not able to destroy collapsed keys, because keys (except for SRK and EK) are stored outside of it. To solve this problem, this paper proposed two mechanisms of revoking TPM keys. Without major changes to the TPM command set, checked the validities of loaded keys by using key lists. While realizing revocation checking effectively, preserved backwards compatibility with the current TCG specifications, and introducted no overhead for normal operation. At last, to improve the efficiency of revoking and loading operations and enhance the practicability of revocation mechanism, proposed the combination of both mechanisms.
Zhou Yan
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810046660
Abstract: In the crystal of the title compound, C8H9NO2S, synthesized by the oxidation of 2-(methylsulfanyl)benzamide using NaOCl with 2,2,6,6-tetramethylpiperidyl-1-oxy (TEMPO) as the catalyst, molecules are linked via intermolecular N—H...Oamide hydrogen bonds, forming centrosymmetric amide–amide dimers which are extended into a two-dimensional lamellar framework parallel to (100) through amide–sulfinyl N—H...O hydrogen bonds. The benzene ring forms a dihedral angle of 25.6 (2)° with the amide group
Soft Power and Development Strategy of College Sports Association in China
Studies in Sociology of Science , 2012, DOI: 10.3968/2276
Abstract: The literature and logic analysis are used to analyze the contents and elements of the soft power of university sports associations in China thoroughly. On this basis, the countermeasures to improve the soft power of university sports associations in China have been proposed. Keywords: University Sports Associations; Soft Power; Countermeasure
The Impact of Cultural Transfer on Cross-cultural Communication
Yan Zhou
Asian Social Science , 2009, DOI: 10.5539/ass.v4n7p142
Abstract: The core of cross-cultural communication is to improve the cross-cultural communicative competence of English learners. Cultural transfer of first language is the most influential element on cross-cultural communication. This paper mainly discusses the impact of cultural transfer on cross-cultural communication, and practical and effective methodology to improve the cross-cultural communication and to do research on this subject.
vSMC: Parallel Sequential Monte Carlo in C++
Yan Zhou
Computer Science , 2013,
Abstract: Sequential Monte Carlo is a family of algorithms for sampling from a sequence of distributions. Some of these algorithms, such as particle filters, are widely used in the physics and signal processing researches. More recent developments have established their application in more general inference problems such as Bayesian modeling. These algorithms have attracted considerable attentions in recent years as they admit natural and scalable parallelizations. However, these algorithms are perceived to be difficult to implement. In addition, parallel programming is often unfamiliar to many researchers though conceptually appealing, especially for sequential Monte Carlo related fields. A C++ template library is presented for the purpose of implementing general sequential Monte Carlo algorithms on parallel hardware. Two examples are presented: a simple particle filter and a classic Bayesian modeling problem.

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