OALib Journal期刊

ISSN: 2333-9721




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匹配条件: “HUA Wei” ,找到相关结果约66570条。
Using Bayesian Game Model for Intrusion Detection in Wireless Ad Hoc Networks  [PDF]
Hua Wei, Hao Sun
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2010, DOI: 10.4236/ijcns.2010.37080
Abstract: Wireless ad ho network is becoming a new research fronter, in which security is an important issue. Usually some nodes act maliciously and they are able to do different kinds of Denial of Service (Dos). Because of the limited resource, intrusion detection system (IDS) runs all the time to detect intrusion of the attacker which is a costly overhead. In our model, we use game theory to model the interactions between the intrusion detection system and the attacker, and a realistic model is given by using Bayesian game. We solve the game by finding the Bayesian Nash equilibrium. The results of our analysis show that the IDS could work intermittently without compromising on its effectiveness. At the end of this paper, we provide an experiment to verify the rationality and effectiveness of the proposed model.
Extended Sequential Truncation Technique for Adaptive Dynamic Programming Based Security-Constrained Unit Commitment with Optimal Power Flow Constraints  [PDF]
Danli Long, Hua Wei
Journal of Power and Energy Engineering (JPEE) , 2014, DOI: 10.4236/jpee.2014.24092
Abstract: Considering the economics and securities for the operation of a power system, this paper presents a new adaptive dynamic programming approach for security-constrained unit commitment (SCUC) problems. In response to the “curse of dimension” problem of dynamic programming, the approach solves the Bellman’s equation of SCUC approximately by solving a sequence of simplified single stage optimization problems. An extended sequential truncation technique is proposed to explore the state space of the approach, which is superior to traditional sequential truncation in daily cost for unit commitment. Different test cases from 30 to 300 buses over a 24 h horizon are analyzed. Extensive numerical comparisons show that the proposed approach is capable of obtaining the optimal unit commitment schedules without any network and bus voltage violations, and minimizing the operation cost as well.
The Capital and Risk Adjustment Under Regulatory Pressure of Chinese Commercial Banks
hua WEI
Management Science and Engineering , 2011, DOI: 10.3968/2062
Abstract: This paper analyzes the adjustment of Chinese commercial banks’ capital and risk after the implementation of Measures for the Management of Capital Adequacy Ratios of Commercial Banks, using 3SLS technique and a simultaneous equation model (Shrieves and Dahl, 1992) with data of 28 commercial banks. The results suggest that banks increase the capital level in order to meet the reqirement of capital regulation; the regulation pressure increases the risk taken by banks with inadequate capital, and increases the capital level in banks with adequate capital. Key words: Capital Adequacy Ratios; Regulation Pressure; Risk Taking
Cardiac resynchronization therapy in China

Wei HUA,

老年心脏病学杂志(英文版) , 2006,
Abstract: Congestive heart failure (HF) is a major and growing public health problem. The therapeutic approach includes non-pharmacological measures, pharmacological therapy, mechanical devices, and surgery. Despite the benefits of optimal pharmacologic therapy, the prognosis is still not ideal. At this time, cardiac resynchronization therapy (CRT) has gained wide acceptance as an alternative treatment for HF patients with conduction delay.
A review of research on the development of instruments for therapeutic efficacy evaluation of traditional Chinese medicine
Wei-hua Xu
Zhong Xi Yi Jie He Xue Bao , 2012,
Abstract: OBJECTIVE: Due to the differences between Chinese and Western cultures, Chinese version of foreign research instruments may not be totally applicable for use in evaluating the therapeutic effect of traditional Chinese medicine (TCM). Great efforts have been made by Chinese researchers to develop scales for evaluation of the therapeutic effects of TCM. This study aims to understand the current situation of research in the development of evaluation instrument in TCM.METHODS: Database searches of Chinese Biomedical Literature Database, China Academic Journal Network Publishing Database and Chinese Scientific Journals Database were undertaken to identify published studies with the purpose of developing instruments in assessing the effectiveness of TCM, including papers regarding the construction of conceptual framework of instrument, item generation and selection and the evaluation of measurement properties.RESULTS: A total of 60 pieces of literature involving 36 instruments were included. The first article on the development of each of the instruments was published between 2005 and 2011 and the instruments were used in many kinds of medical conditions, including cardiocerebrovascular, respiratory, digestive and infectious diseases. The number of items ranged from 10 to 52. Of the 36 instruments, 13 (36.1%) defined the hypothesized concepts measured by the instrument, 30 (83.3%) reported the domains of the questionnaires before measurement property testing and all of them were multidomain. Of 32 studies regarding item selection and the instrument’s property evaluation, 14 (43.8%) articles reported the administration mode, 24 (75%) reported response option types, and 10 (31.5%) provided scoring algorithm for the scale, but none of these 32 studies specified the recall period. In 29 studies aiming at testing instrument’s measurement property, 28 articles tested the Cronbach’s α coefficient of the full scale and/or subscales, and retest reliability was also detected in 15 studies. Twenty-seven studies evaluated the construct validity by exploratory factor analysis and among them there were two studies applying confirmatory factor analysis. Content validity, responsiveness and feasibility of instruments were assessed in 11, 16 and 16 studies, respectively.CONCLUSION: This study shows that in recent years many instruments have been developed in an attempt to evaluate the therapeutic effects of TCM, but some problems still exist in their practical implementation, including negligence in outlining the hypothesized concepts of the TCM instruments and in the reporti
Clinical study on Fufang Sishen Decoction in treating arrhythmia after virus myocarditis
WEI Qiang-Hua
Zhong Xi Yi Jie He Xue Bao , 2004,
Abstract: Objective: To observe the effect of Fufang Sishen Decoction (FFSSD) on arrhythmia after virus myocarditis. Methods: One hundred and two cases of arrhythmia after virus myocarditis were randomly divided into two groups. The treatment group was treated with FFSSD, 6 g, b.i.d.; and the control group with propafenone, 150 mg, q 8 h. The therapeutic effects were observed in 4 weeks.Results: The total anti-arrhythmia effects of FFSSD and propafenone were 71.9 % and 78.9 % respectively (P>0.05). FFSSD took effects relatively slowly with mild and lasting effect. Conclusion: The curative effect of FFSSD in treating arrhythmia after virus myocarditis is confirmed. FFSSD has no obvious side effects.
General methods for clinical effect assessment of traditional Chinese medicine
WEI Hua-Feng
Zhong Xi Yi Jie He Xue Bao , 2005,
Abstract: Along with the changes of disease spectrum, medical models and health concept, people pay more and more attention to the diagnostic and therapeutic approaches of traditional Chinese medicine (TCM). With the effect assessment being changed from disease-based model to patient-based model, how to scientifically and objectively explain the validity of TCM has become the premise for further development of TCM and dissemination of it throughout the world. In this article, the authors analyzed the status quo and problems of the effect assessment of TCM, and proposed some general methods for clinical effect assessment of TCM, including formulating criteria for syndrome differentiation under the guidance of TCM theories, paying attention to quality of life, proper selection of indexes for outcome assessment, application of modern clinical study methods, such as the methods of evidence-based medicine and clinical epidemiology, designing randomized controlled trials, multi-subject co-operation, strict supervision of the quality of researches, and establishment of organizations for professional training.
Research on the Technical Growth Capability of Enterprises and the Countermeasures
Duo Feng,Hua Wei
Asian Social Science , 2009, DOI: 10.5539/ass.v5n3p37
Abstract: In recent years, how to develop enterprise technological capability has become the foremost issue to be tackled without delay in both the theoretical and practical areas. This paper uses a model to testify the non-linear growing law of technological capability in its life circle from the viewpoint of its connotation and growth mechanism, and puts forward specific measures to elevate the technological capability aiming at its traits in different stages of its life circle.
On Weak Topology for Optimal Control of Switched Nonlinear Systems
Hua Chen,Wei Zhang
Mathematics , 2014,
Abstract: Optimal control of switched systems is challenging due to the discrete nature of the switching control input. The embedding-based approach addresses this challenge by solving a corresponding relaxed optimal control problem with only continuous inputs, and then projecting the relaxed solution back to obtain the optimal switching solution of the original problem. This paper presents a novel idea that views the embedding-based approach as a change of topology over the optimization space, resulting in a general procedure to construct a switched optimal control algorithm with guaranteed convergence to a local optimizer. Our result provides a unified topology based framework for the analysis and design of various embedding-based algorithms in solving the switched optimal control problem and includes many existing methods as special cases.
Down Regulation of Survivin Gene and Up Regulation of p53 Gene expression by siRNA Induces Apoptosis in human Hepatocellular Carcinoma cell Line HepG2  [PDF]
Yun-Hua Lu, Cong Tang, Wei Wang, Tao Xi
Journal of Biomedical Science and Engineering (JBiSE) , 2009, DOI: 10.4236/jbise.2009.21010
Abstract: Survivin gene may be a good target for cancer gene therapy because it is over expressed in a variety of human tumors including human hepatocellular carcinoma but not in differen- tiated adult tissues. To explore the effects of the siRNA of survivin gene inducing apoptosis in human hepatocellular cancer cells, three siRNAs cpusiRNA1, cpusiRNA2 and cpusiRNA3 were designed and transferred into human hepatocellular carcinoma cell line HepG2 (HepG2) by lipofection. MTT test showed that the growth of HepG2 decreased when it was transfected with 25nM, 50nM, 100nM, 150nM, 200nM, 400nM siRNA respectively after 48 hours. And the change of mRNA and protein of survivin gene and p53 gene had been detected by RT-PCR and Western blot. Cells presented an increase in apoptosis index was assayed by flow cytometry. Small interfering RNA can exert a knockdown of survivin gene expression and up regulation of p53 gene to induce apoptosis and to inhibit the growth of HepG2.

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