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Search Results: 1 - 10 of 28196 matches for " MA Yuhong "
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Rethinking the Optimal City Size from the Perspective of the City Network  [PDF]
Yuhong Cheng, Chujun Ma
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.55010
Abstract: The optimal city size is an intuitive and clear indicator of whether the current state of the city is efficient. So it is determined by the internal factors of the city and the way they are organized if the city operates as a container only. In the picture where the city network has become a normality of the existing economic organizations, the optimal city size theory, including the concept, the mechanism and the path need to be rethought. Therefore, this paper starts from the essential concept of optimal city size and analyzes the influences of urban network on urban production and internal attribute characteristics, and further briefly analyzes the influence path and mechanism of the urban network on the optimal city size.
Evaluation of upper limb muscle fatigue based on surface electromyography
QianXiang Zhou,YuHong Chen,Chao Ma,XiaoHui Zheng
Science China Life Sciences , 2011, DOI: 10.1007/s11427-011-4229-z
Abstract: Fatigue is believed to be a major contributory factor to occupational injuries in machine operators. The development of accurate and usable techniques to measure operator fatigue is therefore important. In this study, we used a novel method based on surface electromyography (sEMG) of the biceps brachii and the Borg scale to evaluate local muscle fatigue in the upper limb after isometric muscle action. Thirteen young males performed isometric actions with the upper limb at different force levels. sEMG activities of the biceps brachii were recorded during the actions. Borg scales were used to evaluate the subjective sensation of local fatigue of the biceps brachii after the actions. sEMG activities were analyzed using the one-third band octave method, and an equation to determine the degree of fatigue was derived based on the relationship between the variable and the Borg scale. The results showed that the relationship could be expressed by a conic curve, and could be used to evaluate muscle fatigue during machine operation.
Taxonomic Clarification of A Well-Known Pathogenic Scuticociliate,Miamiensis avidus Thompson & Moewus,1964(Ciliophora,Scuticociliatia) Taxonomic Clarification of A Well-Known Pathogenic Scuticociliate,Miamiensis avidus Thompson & Moewus,1964(Ciliophora,Scuticociliatia)
MA Mingzhen,LU Borong,FAN Xinpeng,SHI Yuhong,CHEN Xiangrui
- , 2018,
Abstract: Miamiensis avidus Thompson & Moewus,1964,is a cosmopolitan and well-known marine pathogenic ciliated protist.However,the taxonomy of this species up to now has remained controversial,especially with respect to the validity of the morphologically similar species,Philasterides dicentrarchi,which was considered as a junior synonym of M.avidus.In this study,a population of M.avidus was collected from the skin of pharaoh cuttlefish(Sepia pharaonis) cultured near the East China Sea,Ningbo,China and its morphology and phylogeny were investigated in detail based on living characters,infraciliature,small subunit(SSU) r DNA and ITS1-5.8 S-ITS2 region sequences.In addition,the morphometrics of a previously reported free-living population,collected from the Bohai Sea,were rechecked and analyzed.We compared the present two isolates with all historic populations of M.avidus and P.dicentrarchi,and found that their morphological characters were either highly similar or exactly identical,indicating that they are the same morphospecies.However,the phylogenetic analyses based on SSU r DNA or ITS1-5.8 S-ITS2 region sequences revealed that most M.avidus and P.dicentrarchi populations formed one clade,and the two isolates of M.avidus from Weifang and American Type Culture Collection clustered in another clade,which indicated that there might be cryptic species in Miamiensis avidus
An Energy-Based Stochastic Model for Wireless Sensor Networks  [PDF]
Yuhong Zhang, Wei Li
Wireless Sensor Network (WSN) , 2011, DOI: 10.4236/wsn.2011.39035
Abstract: We propose an energy-based stochastic model of wireless sensor networks (WSNs) where each sensor node is randomly and alternatively in an active and a sleep mode. We first investigate the sensor model and derive the formula of the steady-state probability when there are a number of data packets in different sensor modes. We then determine important sensor’s performance measures in terms of energy consumptions, average data delay and throughput. The novelty of this paper is in its development of a stochastic model in WSN with active/sleep feature and the explicit results obtained for above mentioned energy consumption and performance characteristics. These results are expected to be useful as the fundamental results in the theoretical analysis and design of various hybrid WSNs with power mode consideration.
Optimal Choice of Cotton Subsidy Mode in China—Empirical Study Based on Principal Component Regression  [PDF]
Jianzhong Shi, Yuhong Li
Modern Economy (ME) , 2013, DOI: 10.4236/me.2013.47050

Adopt principal component regression for researching the optimal subsidy mode of cotton production in China. The result indicates that, from the perspective of economic stimulatory effect, the optimal cotton subsidy in China is farm chemical subsidy rather than seed subsidy. The reason is that there are frequent pest disasters in cotton producing areas in China. So farm chemical subsidy is the most important factor ensuring cotton production. Meanwhile, cotton varieties must be optimized and improved to increase the ability to resist pests and diseases, and the forecasting for pests and diseases in cotton production areas must be enhanced, early warning mechanism and monitoring must be built, and in addition, it is strongly recommended that if financial resources allow, subsidies like seed subsidy, fertilizer subsidy, machinery subsidy and irrigation subsidy could also put into effect in China.

A Study on Consumer Behavior of Commercial Health and Fitness Club—A Case of Consumers in Liverpool  [PDF]
Wen Zhang, Yuhong Li
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.41010

Commercial health & fitness clubs are providing an important kind of sporting service. On the basis of questionnaires and interviews with relevant research results, consumers of health & fitness clubs in Liverpool area are studied about their structures including ages, genders, etc., motivation of consumption, and consumption level as well as demand characteristics. Through impressing on the wheel of consumer behavior model, the factors affecting consumer behavior are also analyzed. The most predictable and accessible segments like young adult, affluent, health or appearance conscious consumers are concluded; their lifestyles easily integrate to leisure activities, and time pressure or financial costs are their key concerns. Targeting marketing strategies of the clubs are suggested accordingly in order to design service channel, price reasonably, communicate with consumers and provide satisfying environment.

The Analysis of the Investment Climate in China after the Financial Crisis  [PDF]
Yuhong Cheng, Jing Lu
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.312017
Abstract: Is Chinese investment climate worse off after the financial crisis? Has the investment climate structure in China changed? Based on these two questions, by comparing the investment situation between 2007 and 2013 in different provinces and cities, the paper uses principal component analysis and cluster analysis from province, cluster and region perspectives to study the regional investment climate changes in China after the financial crisis. The study shows that after the financial crisis the general investment climate does not have huge changes. The east, middle, and west regions have significant differences, among which there is better investment climate in the east region, the evolvement in the middle region is distinct, whilst the improvement from the west region is less. This paper also gives a few political suggestions towards the results.
Viewpoint Makes Meaninglessness Meaningful  [PDF]
Yunfeng Shi, Yuhong Xie
Open Journal of Modern Linguistics (OJML) , 2016, DOI: 10.4236/ojml.2016.66038
Abstract: What makes some seemingly meaningless sentences frequently useful in the daily communication and thus meaningful? This paper proposes an innovative perspective of studying pragmatic meaning via considering the language users’ viewpoint, which influences and determines the extent of subjectivity in choosing appropriate meaning among multiple layers of meaning. It is argued that viewpoint makes vague or even meaningless language meaningful in that meaning is, first of all, multilayered; then it is optional and subjective, and finally it is chosen from all the possible options of meaning or meaning potential with regard to the language user’s various kinds of viewpoints.
Viewpoint in Garden Path Sentence: A Functional Approach  [PDF]
Yunfeng Shi, Yuhong Xie
Open Journal of Modern Linguistics (OJML) , 2017, DOI: 10.4236/ojml.2017.71003
Abstract: Garden path sentence is a kind of complex sentence which may cause structural and semantic ambiguity. Psycholinguistic analysis is the conventional approach to it. This paper will survey garden path sentence via viewpoint analysis within a systemic functional linguistic frame. In another word, garden path sentence will be discussed in term of lexicogrammar, clause complex, transitivity, theme and rheme, and cohesion and their relationship with viewpoint. It is expected that this approach will help to the interpretation and disambiguation of garden path sentences. Garden path effect attributes to polysemy of lexis, syntactic structure and sentence reader’s viewpoint.
An Autonomic Multimedia and Information Service Gateway for Mobile Devices
Yuhong Li,Shuwen Pan,Na He,Yi Zhao,Huichun Su,Kuifei Yu,Jian Ma
International Journal of Distributed Sensor Networks , 2009, DOI: 10.1080/15501320802575187
Abstract: With the increase of the networking functions of the mobile handheld devices, today there is a strong need for receiving multimedia through mobile handheld devices. However, the current streaming technologies cannot well satisfy the users' need due to the large network bandwidth requirement and high price. And the infrastructure of broadcasting oriented for a mobile handheld device, such as DVB-H, are not yet popular in the daily life.
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