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Search Results: 1 - 10 of 3889 matches for " Zhiyi Qu "
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Distributed Middlebox Placement Based on Potential Game  [PDF]
Yongwen Li, Zhiyi Qu
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2017, DOI: 10.4236/ijcns.2017.105B026
In this paper, we analyse the deployment of middlebox. For a given network information and policy requirements, an attempt is made to determine the optimal location of middlebox to achieve the best performance. In terms of the end-to-end delay as a performance optimization index, a distributed middlebox placement algorithm based on potential game is proposed. Through extensive simulations, it demonstrates that the proposed algorithm achieves the near-optimal solution, and the end-to-end delay decreases significantly.
Design and Implementation on the P2P VOD System Based on the RF-IPS Algorithm  [PDF]
Zhiyi Qu, Lili Li, Jianxu Li
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2010, DOI: 10.4236/ijcns.2010.39099
Abstract: This paper presents a P2P VOD system based on RF-IPS algorithm, and this system consists of two parts, server-side and clients. We put emphasis on the piece selection module of server-side, and in this part we cite the RF-IPS algorithm proposed in the past. In the piece selection module, we also proposed a weighting function except the RF-IPS algorithm. Using this function we will find the best server peers effectively and quickly, it will enhance the performance of this system. We carry on experiments on RF-IPS algorithm, and the results show this algorithm is efficient. Overall, we believe that the RF-IPS algorithm is feasible to further improve system performance and provide a cost-effective P2P VOD service with acceptable user experience.
On Out-of-sequence Problem in Contention-tolerant Crossbar Switches
Jianfei Zhang,Zhiyi Fang,Guannan Qu,Xiaohui Zhao
Information Technology Journal , 2011,
Abstract: Recently, we proposed an innovate crossbar switch named Contention-tolerant Crossbar Switches (CTC(N)). Different with conventional crossbar switches which resolve output contentions by building conflict-free connections among inputs and outputs before switching, CTC(N) tolerates output contentions and avoids cell lost by reconfiguring bus in switch fabric. In this way, complex hardware which is used to complete the arbitrations is released and schedulers are fully distributed over all input ports and operate independently. CTC(N) opens a new perspective on cell switching. For the asymmetric property of original CTC(N) architecture, DiaCTC(N), an improved architecture was proposed. However, interceptions which happen in contention-tolerant mechanism lead to cell out of their original sequence. In this study, we focus on this problem in CTC(N) and DiaCTC(N). Two methods including re-sequencing and Self-adjust scheduling algorithm will be discussed.
Analysis on Pollution Factors of Urban River  [PDF]
Zhiyi Lei
Journal of Geoscience and Environment Protection (GEP) , 2015, DOI: 10.4236/gep.2015.310002

Main pollutants of the urban scenic river in Nanjing City are studied in this paper. In the study area a total of 39 monitoring points are set in natural water, around pumping stations and near the tail water of sewage treatment plant. Through the monitoring of pollution sources of receiving conventional index, the pollution sources distribution and river pollution factors are detailed analyzed, as nutrient salts, heavy metals, and environmental endocrine disruptors. And sources of the pollution factors are analyzed by principal component analysis to get the main pollution factors in this channel.

Deposit Insurance System and the Commercial Bank Loan Loss Provisions  [PDF]
Zhiyi Wang
Modern Economy (ME) , 2019, DOI: 10.4236/me.2019.101012
The article mainly analyzes the deposit insurance system in our country promulgated after the provision for the impact of bank loan loss provisions. Empirical study found that the deposit insurance system in our country was promulgated in 2015, the bank’s loan loss provisions increased, among them, the big bank loan loss provisions significantly increased. After separating the manipulated loan loss provisions, we found that the manipulated loan loss provisions increased. Further study found that, following the promulgation of the deposit insurance system, managers in commercial bank weakened the motive of income smoothing, but the bank’s capital management behavior does not.
The Subject Information Management System Based on Web

Qu Zhiyi Lu Weiguo,

现代图书情报技术 , 2001,
Abstract: This paper discusses and analyses the characters and functions of the subject information management system based on Web. It emphasizes on the technology of Java servlet and JDBC which are used in the system.
Genetic Polymorphism in PDE4D Gene and Risk of Ischemic Stroke in Chinese Population: A Meta-Analysis
Xu Liu, Ruixia Zhu, Lei Li, Shumin Deng, Qu Li, Zhiyi He
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0066374
Abstract: Background Stroke is the second most common cause of death and major cause of disability worldwide. The SNP 83 in PDE4D gene has been suggested as a risk factor in ischemic stroke, but direct evidence from genetic association studies remains inconclusive even in Chinese population. Methods Meta-analysis of case-control studies on the relationship between SNP 83 in PDE4D gene and susceptibility to ischemic stroke in Chinese population published domestically and abroad from January 2003 to September 2012. Results 9 case-control studies were selected. Meta-analysis results showed that the significant association between SNP 83 and ischemic stroke was found under the dominant model (OR = 1.34, 95% CI: 1.20–1.49) and recessive model (OR = 1.45, 95% CI: 1.19–1.76) in Chinese population. In subgroup meta-analysis, SNP 83 and atherothrombotic stroke, rather than lacunar stroke, showed the significant association under the dominant model (OR = 1.69, 95% CI: 1.41–2.01) and recessive model (OR = 1.47, 95% CI: 1.04–2.06). Conclusions The results suggest that SNP 83 in PDE4D gene is significantly associated with susceptibility to ischemic stroke in Chinese population.
Are volatile anesthetics neuroprotective or neurotoxic?
Zhiyi Zuo
Medical Gas Research , 2012, DOI: 10.1186/2045-9912-2-10
Abstract: More than 20 millions of patients each year have surgeries in the USA. The majority of these surgeries are performed under general anesthesia. About 80% of them receive volatile anesthetics as their primary anesthetics [1]. Since the first use of ether, a volatile anesthetic, in 1842, volatile anesthetics have be the major class of general anesthetics used in the clinical practice for near 160 years.Although it is still controversial among the experts, it is generally accepted that general anesthesia minimally includes the following components: unconsciousness, insensateness, analgesia and amnesia. Many experts will also add muscle relaxation and bluntness of cardiovascular response to surgical stimulation into the components of general anesthesia. Volatile anesthetics, unlike most intravenous anesthetics, have pharmacological properties to provide all components of general anesthesia [2]. Thus, volatile anesthetics are full general anesthetics and, theoretically, single volatile anesthetic can be used to provide a patient with full general anesthesia for surgery. In addition, volatile anesthetics take effects very quickly. Most patients anesthetized by these drugs recover smoothly and quickly. With the aid of modern equipment, their use is very easy and their concentrations can be accurately monitored. For these reasons, volatile anesthetics have been popular drugs used in clinical practice. Modern volatile anesthetics that are used in the USA include isoflurane (CHF2-O-CHCl-CF3), sevoflurane (CH2F-O-CH-(CF3)2) and desflurane (CHF2-O-CHF-CF3). Halothane (CF3-CHBrCl) was used clinically for more than 40 years and started to be phased out during 1990s as newer volatile anesthetics become popular. All of these volatile anesthetics are halogenated hydrocarbons.In addition to the anesthetic properties, volatile anesthetics have been thought to have neuroprotective effects for a long time [3,4]. Although the potential for volatile anesthetics to induce cell injury has be
Study on the Actuality and the Countermeasures of the Employment of College Students
Zhiyi Fan
International Education Studies , 2008, DOI: 10.5539/ies.v1n2p41
Abstract: The employment of college students has become an issue that draws common concern from the whole society. This paper explores the employment of college students from various angles, finds out the material reasons thereto and put forwards countermeasures for resolving theses problems and development ways.
Research on the Social Demand for Business Management Talents
Zhiyi Fan
International Journal of Business and Management , 2009, DOI: 10.5539/ijbm.v3n4p62
Abstract: In order to deepen the reform on the education and cultivation of business management major, explore a new mode for cultivating graduate talents, and improve the major’s teaching and cultivating quality, we make a special research on the social demand for business management talents.
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