oalib

OALib Journal期刊

ISSN: 2333-9721

费用:99美元

投稿

时间不限

2018 ( 272 )

2017 ( 334 )

2016 ( 435 )

2015 ( 4359 )

自定义范围…

匹配条件: “Yan Wang” ,找到相关结果约138252条。
列表显示的所有文章,均可免费获取
第1页/共138252条
每页显示
Sensor Scheduling Algorithm Target Tracking-Oriented  [PDF]
Dongmei Yan, Jinkuan Wang
Wireless Sensor Network (WSN) , 2011, DOI: 10.4236/wsn.2011.38030
Abstract: Target tracking is a challenging problem for wireless sensor networks because sensor nodes carry limited power recourses. Thus, scheduling of sensor nodes must focus on power conservation. It is possible to extend the lifetime of a network by dynamic clustering and duty cycling. Sensor Scheduling Algorithm Target Tracking-oriented is proposed in this paper. When the target occurs in the sensing filed, cluster and duty cycling algorithm is executed to scheduling sensor node to perform taking task. With the target moving, only one cluster is active, the other is in sleep state, which is efficient for conserving sensor nodes’ limited power. Using dynamic cluster and duty cycling technology can allocate efficiently sensor nodes’ limited energy and perform tasks coordinately.
A Seven-Dimensional System of the Navier-Stokes Equations for a Two-Dimensional Incompressible Fluid on a Torus  [PDF]
Heyuan Wang, Yan Gao
Open Journal of Fluid Dynamics (OJFD) , 2014, DOI: 10.4236/ojfd.2014.44026
Abstract: A seven-mode truncation system of the Navier-Stokes equations for a two-dimensional incompressible fluid on a torus is considered. Its stationary solutions and stability are presented; the existence of the attractor and the global stability of the system are discussed. The whole process, which shows a chaos behavior approached through instability of invariant tori, is simulated numerically by computers with the changing of Reynolds number. Based on numerical simulation results of bifurcation diagram, Lyapunov exponent spectrum, Poincare section, power spectrum and return map of the system, some basic dynamical behaviors of the new chaos system are revealed.
The Introduction of Specific Water and Maximum Airborne Specific Water & the Improvement of Dynamic Equations on Non-Uniform Saturated Moist Atmosphere  [PDF]
Xingrong Wang, Yan Feng
Atmospheric and Climate Sciences (ACS) , 2015, DOI: 10.4236/acs.2015.53018
Abstract: To eliminate the irrational supposition that condensed liquid water always falls immediately, specific water m?and maximum airborne specific water mm are introduced into the dynamic framework on non-uniform saturated moist atmosphere (m?is the ratio of the airborne liquid water mass to the moist air mass in unit cubage moist air, mm is its maximum value with \"\" , \"\" , \"\" and \"\" are airborne coefficient, vertical velocity and saturated specific humidity respectively). The balance equation between water vapor and airborne liquid water is derived. From the balance equation, a new formula of precipitate rate is got. The analysis shows that in the air stream with some upward vertical velocity (\"\" ), the condensed liquid water can precipitate under the condition with \"\" (q is specific humidity) and?\"\" only, otherwise it is detained in the air and becomes airborne liquid water. Not only does precipitating liquid water contain condensed liquid water, but also contains converged and existing airborne liquid water. Following above discussion, improved dynamic equations on non-uniform saturated moist atmosphere are provided.
Periodic Solution of Impulsive Lotka-Volterra Recurrent Neural Networks with Delays  [PDF]
Yan Yan, Kaihua Wang, Zhanji Gui
Open Journal of Applied Sciences (OJAppS) , 2013, DOI: 10.4236/ojapps.2013.31B1012
Abstract:

In this paper, periodic solution of impulsive Lotka-Volterra recurrent neural networks with delays is studied. Using the continuation theorem of coincidence degree theory and analysis techniques, we establish criteria for the existence of periodic solution of impulsive Lotka-Volterra recurrent neural networks with delays.

Progress on Research for the Treatment of HIV/AIDS with Traditional Chinese Medicine in China  [PDF]
Jian Wang, Bi Yan Liang
World Journal of AIDS (WJA) , 2011, DOI: 10.4236/wja.2011.13016
Abstract: The mortality rate associated with HIV/AIDS has decreased dramatically after highly active antiretroviral therapy (HAART). However, issues such as viral reservoirs, drug resistance and side effects have led to a significant crisis in the management of HIV/AIDS. It has become evident that HAART does not offer a complete solution to the problem. Therefore, additional and alternative therapeutic strategies urgently need to be explored. Traditional Chinese medicine (TCM) is one of the mainstays of complementary and alternative medicine, and its use has aroused increasing attention. This paper reviews the recent progress in the use of TCM, from single herbs, herbal ingredients, compound Chinese herbal medicine, acupuncture and medical care, for the treatment of HIV/AIDS in China. We also review evaluation systems that assess the efficacy of TCM.
Game Analysis of Promoting Substitute Public Goods Provision
Yan WANG
Management Science and Engineering , 2009,
Abstract: A game with parameter for substitute public goods provision is constructed by using non-cooperative game methods. During the voluntary provision of public good, the influence to individual action of the government behavior and strategic selection of contributors are analysed. Further, incentive mechanism for public goods provision is discussed. For this problem, a cooperative game for public goods provision is constructed, in which the core of game are coincident with Lindahl allocation. So this allocation meets individual rationality and collective rationality. Key Words: Substitute Public Goods; incentive mechanism; core; Lindahl allocation
The Effect of Text Length on Students Reading Comprehension
Yan Wang
Theory and Practice in Language Studies , 2012, DOI: 10.4304/tpls.1.9.1160-1166
Abstract: This study investigated the impact of text length on reading comprehension. Three reading comprehension passages accompanied by 30 items were reduced to two thirds of their original lengths. The truncated versions along with the original version were randomly administered to 100 male and female college students of English (50) and non-English majors (50). Although the participants performed marginally better on the shortened version of the test, a two-way ANOVA revealed that the length of the text did not have any statistically significant effect on the students' performance on the two versions of the test. No interaction between the length of the test and the students' major was found either. Further analysis of the data indicated that sex did not have any significant effect on the performance of the students on the two versions of the test. The article concludes with suggestions for further investigations into the issue in question.
Research advance of nanometric traditional Chinese herbal drugs for cancer treatment
Yan WANG
Zhong Xi Yi Jie He Xue Bao , 2007,
Abstract:
A Survey of the Foreign Language Learning Motivation among Polytechnic Students in China
Yan Wang
Journal of Language Teaching and Research , 2010, DOI: 10.4304/jltr.1.5.605-613
Abstract: A Survey of the foreign language (English, French and Japanese) learning motivation among polytechnic students in China has been made. In the Study I (English learning motivation); participants are 200 freshmen from Shenzhen Polytechnic, Guangdong province. Descriptive statistics, correlation analysis, multiple regression, independent t-test, and ANOVA were conducted. Results indicate that: students study English for integrative, instrumental, and requirement reasons; orientations are predictors of learners’ motivation; positive English learning or using experience of other family members increases students’ motivation, and students with higher entry exam scores also demonstrate higher motivation. In the Study II (French and Japanese learning motivation), interviews were conducted with 70 first-year students. After similar questionnaire and same analysis method like the Study I, it was found that both groups share more characteristics than they differ in the process learning a second language. The main difference in integrative orientation is greater in French & Japanese than English.
The Strategic Research of Sustainable Development in Chinese-foreign Cooperation in Running Schools
Yan WANG
Canadian Social Science , 2010,
Abstract: At the end of the 20th century, Chinese-foreign cooperation in running schools has appeared. Especially after our country’s accession to WTO, the development of Chinese-foreign cooperation in running schools has remarkably developed with a larger size appearance over time. As a result, the educational levels constantly improve and educational models increasingly diversify. However, with the profound development of Chinese-foreign cooperation in running schools, various new questions emerge. The existing researches have broad discussed and proposed some constructive strategies and suggestions. Thus, those researches concentrate on the existing problems in Chinese-foreign cooperation in running schools with specific regional observation and lack of general analysis. Key words: Chinese-foreign cooperation in running schools; higher education; internationalization; sustainable development Résumé: à la fin du 20e siècle, la coopération sino-étrangère dans la gestion des écoles est apparue. Surtout après l'adhésion de notre pays à l'OMC, la coopération sino-étrangère dans la gestion des écoles s'est remarquablement développée avec une apparence de plus grande taille au fil du temps. En conséquence, les niveaux d'enseignement s'améliorent constamment et les modèles d'enseignement se diversifient de plus en plus. Cependant, avec un développement profond de la coopération sino-étrangère de la gestion des écoles, de nouvelles questions diverses s'apparaissent. Les recherches existantes ont proposé des stratégies constructives et des suggestions. Ainsi, ces recherches se concentrent sur les problèmes existant de la coopération sino-étrangère dans la gestion des écoles avec des observations spécifiques régionales et le manque d'analyse générale. Mots-clés: coopération sino-étrangère dans la gestion des écoles; enseignement supérieur; internationalisation, développement durable
第1页/共138252条
每页显示


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.