检索结果-南通市图书馆

国外测井技术 1989年第3期4卷 80-88页

作者： coll.,ea 张绍元

Comparison on neural networks and support vector machines in suppliers' selection

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2008年第2期19卷 316-320页

作者： Hu Guosheng1,2 & Zhang Guohong3 1. School of Management, Guangdong Vocational coll. of Science and Technology, Guangzhou 510640, P. R. China 2. School of Computer and Information, Anqing Teacher coll., Anqing 246011, P. R. China 3. Adult Education coll., Guangzhou Univ., Guangzhou 510405, P. R. China School of Management Guangdong Vocational Coll. of Science and Technology Guangzhou 510640 P. R. China School of Computer and Information Anqing Teacher Coll. Anqing 246011 P. R. China Adult Education coll. Guangzhou Univ. Guangzhou 510405 P. R. China

Suppliers＇ selection in supply chain management （SCM） has attracted considerable research interests in recent years. Recent literatures show that neural networks achieve better performance than traditional statistical methods. However, neural networks have inherent drawbacks, such as local optimization solution, lack generalization, and uncontrolled convergence. A relatively new machine learning technique, support vector machine （SVM）, which overcomes the drawbacks of neural networks, is introduced to provide a model with better explanatory power to select ideal supplier partners. Meanwhile, in practice, the suppliers＇ samples are very insufficient. SVMs are adaptive to deal with small samples＇ training and testing. The prediction accuracies for BPNN and SVM methods are compared to choose the appreciating suppliers. The actual examples illustrate that SVM methods are superior to BPNN.

关键词： supplier selection supply chain management logistics support vector machine BPNN.

Stability analysis of cellular neural networks with time-varying delay

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2009年第2期20卷 266-273页

作者： Wang Xingang1,4, Zhang Dongmei2 & Liu Jun3 1. coll. of Information Engineering, Zhejiang Univ. of Technology, Hangzhou 310032, P. R. China 2. coll. of Science, Zhejiang Univ. of Technology, Hangzhou 310032, P. R. China 3. coll. of Science, Beihua Univ., Jilin 132000, P. R. China 4. School of Computer Engineering and Science, Shanghai Univ., Shanghai 200072, P. R. China coll. of Information Engineering Zhejiang Univ. of Technology Hangzhou 310032 P. R. China School of Computer Engineering and Science Shanghai Univ. Shanghai 200072 P. R. China coll. of Science Zhejiang Univ. of Technology Hangzhou 310032 P. R. China coll. of Science Beihua Univ. Jilin 132000 P. R. China

The global asymptotic stability of cellular neural networks with delays is investigated. Three kinds of time delays have been considered. New delay-dependent stability criteria are proposed and are formulated as the feasibility of some linear matrix inequalities, which can be checked easily by resorting to the recently developed interior-point algorithms. Based on the Finsler Lemma, it is theoretically proved that the proposed stability criteria are less conservative than some existing results.

关键词： cellular neural networks time-varying delay integral inequality

在线全文

学校读者我要写书评

暂无评论

子宫体和卵巢原发性双癌的临床研究

中华妇产科杂志 1993年第4期28卷 227-229页

作者：沈铿 coll.,RJ 100730，北京协和医院妇产科香港大学玛丽医院妇产科香港大学病理科

本研究对香港大学玛丽医院妇产科近10年内收治的19例子宫体和卵巢原发性双癌的病例进行回顾性研究。其中14例患有典型的子宫内膜癌和卵巢子宫内膜样癌(A 组),5例患有子宫体和/或卵巢的非子宫内膜样癌(B 组)。两组总生存率为78%.与Ⅰ期... 详细信息

本研究对香港大学玛丽医院妇产科近10年内收治的19例子宫体和卵巢原发性双癌的病例进行回顾性研究。其中14例患有典型的子宫内膜癌和卵巢子宫内膜样癌(A 组),5例患有子宫体和/或卵巢的非子宫内膜样癌(B 组)。两组总生存率为78%.与Ⅰ期卵巢癌相同。肿瘤的组织学分级和腹腔冲洗液细胞学检查结果阳性对患者的预后有显著影响(P<0.05)。研究结果提示原发性双癌预后较好。应将其与Ⅱ期卵巢癌和Ⅲ期子宫内膜癌区分开。

关键词：子宫肿瘤卵巢肿瘤病理学

Data processing of small samples based on grey distance information approach

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2007年第2期18卷 281-289页

作者： Ke Hongfa, Chen Yongguang & Liu Yi 1. coll. of Electronic Science and Engineering, National Univ. of Defense Technology, Changsha 410073, P. R. China 2. Unit 63880, Luoyang 471003, P. R. China coll. of Electronic Science and Engineering National Univ. of Defense Technology Changsha 410073 P.R. China Unit 63880 Luoyang 471003 P.R. China

Data processing of small samples is an important and valuable research problem in the electronic equipment test. Because it is difficult and complex to determine the probability distribution of small samples, it is difficult to use the traditional probability theory to process the samples and assess the degree of uncertainty. Using the grey relational theory and the norm theory, the grey distance information approach, which is based on the grey distance information quantity of a sample and the average grey distance information quantity of the samples, is proposed in this article. The definitions of the grey distance information quantity of a sample and the average grey distance information quantity of the samples, with their characteristics and algorithms, are introduced. The correlative problems, including the algorithm of estimated value, the standard deviation, and the acceptance and rejection criteria of the samples and estimated results, are also proposed. Moreover, the information whitening ratio is introduced to select the weight algorithm and to compare the different samples. Several examples are given to demonstrate the application of the proposed approach. The examples show that the proposed approach, which has no demand for the probability distribution of small samples, is feasible and effective.

关键词： Data processing Grey theory Norm theory, Small samples Uncertainty assessments Grey distance measure, Information whitening ratio.

Intuitionistic fuzzy hierarchical clustering algorithms

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2009年第1期20卷 90-97页

作者： Xu Zeshui1,2 1. coll. of Economics and Management, Southeast Univ., Nanjing 210096, P. R. China 2. Inst. of Sciences, PLA Univ. of Science and Technology, Nanjing 210007, P. R. China coll. of Economics and Management Southeast Univ. Nanjing 210096 P. R. China Inst. of Sciences PLA Univ. of Science and Technology Nanjing 210007 P. R. China

Intuitionistic fuzzy set （IFS） is a set of 2-tuple arguments, each of which is characterized by a membership degree and a nonmembership degree. The generalized form of IFS is interval-valued intuitionistic fuzzy set （IVIFS）, whose components are intervals rather than exact numbers. IFSs and IVIFSs have been found to be very useful to describe vagueness and uncertainty. However, it seems that little attention has been focused on the clustering analysis of IFSs and IVIFSs. An intuitionistic fuzzy hierarchical algorithm is introduced for clustering IFSs, which is based on the traditional hierarchical clustering procedure, the intuitionistic fuzzy aggregation operator, and the basic distance measures between IFSs： the Hamming distance, normalized Hamming, weighted Hamming, the Euclidean distance, the normalized Euclidean distance, and the weighted Euclidean distance. Subsequently, the algorithm is extended for clustering IVIFSs. Finally the algorithm and its extended form are applied to the classifications of building materials and enterprises respectively.

关键词： intuitionistic fuzzy set interval-valued intuitionistic fuzzy set hierarchical clustering intuitionisticfuzzy aggregation operator distance measure.

Sterile signals generate weaker and delayed macrophage NLRP3 inflammasome responses relative to microbial signals

在线全文

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2017年第1期14卷 118-126页

作者： Jelena S Bezbradica Rebecca C coll.Kate Schroder Institute for Molecular Bioscience (IMB) IMB Centre for Inflammation and Disease Research and Australian Infectious Diseases Research Centre The University of Queensland Brisbane St Lucia Queensland 4072 Australia

Inflammation is the host response to microbial infection or sterile injury that aims to eliminate the insult, repair the tissue and restore homeostasis. Macrophages and the NLRP3 inflammasome are key sentinels for both types of insult. Although it is well established that the NLRP3 inflammasome is activated by microbial products and molecules released during sterile injury, it is unclear whether the responses elicited by these different types of signals are distinct. In this study, we used lipopolysaccharide and tumor necrosis factor as prototypical microbial and sterile signal 1 stimuli, respectively, to prime the NLRP3 inflammasome. We then used the bacterial toxin nigericin and a common product released from necrotic cells, ATP, as prototypical microbial and sterile signal 2 stimuli, respectively, to trigger the assembly of the NLRP3 inflammasome complex in mouse and human macrophages. We found that NLRP3 inflammasome responses were weakest when both signal 1 and signal 2 were sterile, but responses were faster and stronger when at least one of the two signals was microbial. Ultimately, the most rapid and potent responses were elicited when both signals were microbial. Together, these data suggest that microbial versus sterile signals are distinct, both kinetically and in magnitude, in their ability to generate inflammasome-dependent responses. This hierarchy of NLRP3 responses to sterile versus microbial stimuli likely reflects the urgent need for the immune system to respond rapidly to the presence of infection to halt pathogen dissemination.

关键词： inflammasome NLRP3 sterile inflammation TNF

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

用DSC研究螺压工艺中某些火药的热行为

推进技术 1997年第6期18卷 89-92页

作者：田林祥北京理工大学化工与材料学院北京100081

用差示扫描量热计（DSC）研究了单基、双基和三基药热分解性能。讨论了不同起始温度和升温速率对火药热分解的影响，并对这些火药热稳定性进行了比较，以期对螺压工艺中这些火药热行为的了解提供有益信息。

关键词：固体火箭推进剂热分解差热分析螺压火药

RESeaRCH ON PROBLEM ABOUT THE FeaSIBILITY OF MPS

在线全文

学校读者我要写书评

暂无评论

RESEARCH ON PROBLEM ABOUT THE FEASIBILITY OF MPS

在阿尔巴尼亚不同环境条件下对冬小麦群体的产量及其构成的选择

2005年中国机械工程学会年会

作者： WANG Gang, PENG Zucheng, JIN Li (coll. of Mech. Eng., Chongqing University of Science and Technology, Chongqing, China coll. of Mech. Eng., Chongqing University, Chongqing, China)

＜正＞This paper discusses the factors that affect the feasibility of MPS;the factors are the preparative of basic data, the accuracy of forecast, the planning method and the choice of parameter etc. Analyzes the existing problem and limitation, and presents some suggestions based on the theory such as work study, ERP, CPM and practical experience in order to improve the feasibility of MPS.

关键词： MPS work measurement forecast CPM

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

国外作物育种 1995年第3期14卷 10-13页

作者： coll.,A 向平