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Search Results: 1 - 10 of 65408 matches for " FENG Lu "
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Normality criteria concerning sharing holomorphic functions
Feng Lu
Tamkang Journal of Mathematics , 2012, DOI: 10.5556/j.tkjm.43.2012.243-249
Abstract: In this paper, we study the problem of normal families of meromorphic functions that share holomorphic functions with their linear differential polynomials. Meanwhile, some results about normal family are derived which improve and generalize several related theorems obtained by Chang, Fang and Zalcman [2], Pang [5] and Schwick [9].
Single Crystalline Cadmium Sulfide Nanowires with Branched Structure
Gao Feng,Lu Qingyi
Nanoscale Research Letters , 2009,
Abstract: In this article, we report the synthesis of branched single crystal CdS nanowires. This branched CdS nanostructure is prepared by a simple surfactant-directing method, which is of particular interest as it uses readily available reagents and provides a convenient route to high-yield single crystal nanowires but with branched shape. These branched nanowires have an average diameter of about 40 nm and length up to several micrometers. A possible mechanism has been proposed and the addition of surfactant dodecylthiol into the two mixed-solvents would play an importance effect on the structure of the product. Based on the mechanism, by controlling the synthesis conditions, such as the ratios between the surfactant, inorganic solvent, and organic solvent, other kinds of nanostructures based on CdS nanowires were also prepared. Photoluminescence (PL) measurement reveals that the branched CdS nanowires have a strong emission at about 700 nm which might be due to its special structure.
Distributed Knowledge Integration Based on Intelligent Topic Map
Huimin Lu,Boqin Feng
Information Technology Journal , 2010,
Abstract: We propose a novel concept of Intelligent Topic Map, which extends the conventional topic map in structure and enhances the reasoning functions. With the Intelligent Topic Map as infrastructure, a mechanism of distributed knowledge integration is designed. The structure is divided into three layers: local Intelligent Topic Map layer, similarity measure layer and global Intelligent Topic Map layer. It provides a uniform query interface to a multitude of knowledge sources and lays the foundation for high-quality knowledge services. Moreover, we propose a new similarity measure algorithm based on comprehensive information theory and merging rules for knowledge integration. The experimental results show that our method is feasible and it has the significance of reference and value of further study for the distributed knowledge integration.
An Intelligent Topic Map-Based Approach to Detecting and Resolving Conflicts for Multi-Resource Knowledge Fusion
Huimin Lu,Boqin Feng
Information Technology Journal , 2009,
Abstract: In this study, we propose a novel concept of intelligent topic map, which embodies the multi-level, multi-granularity and inherent relevant characteristics of knowledge and realizes knowledge reasoning. With the intelligent topic map as infrastructure, we design a specific ontology fusion process for multi-resource knowledge fusion. Also, we define the taxonomy of merging conflicts which occur during the process of intelligent topic maps merging. We define and classify merging conflicts into data-level conflicts, structure-level conflicts, rule-level conflicts and temporary-level conflicts. We propose the detection and resolution schemes for each merging conflict. Additionally, we implement the multi-resource knowledge fusion conflicts detection and resolution system based on rules. The experimental results show that our method can correctly detect and resolve the conflicts in topic maps merging and it is helpful to improve the quality of multi-resource knowledge fusion.
Tennis Forehand Stroke Action of Biological Mechanics Analysis
Feng Li,Lu Liu
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: Forehand technique is the basic tennis technology, the highest utilization rate technology, but also the most lethal technology and one of the magic weapons of a tennis match. Grasp the qualitative and quantitative methods combined, the combination of video, movie, analytical and computer technology, combining the principles of the movement mechanics and mathematical statistics. Based on the biological mechanics principle and according to the latest research results of the element analysis and logic analysis, analysis of forehand stroke technical movement, which make us more subtle and correct understand forehand technique and eventually be able to provide a scientific theoretical guidance and practical reference for tennis teaching and training and make a small contribution to perfect tennis skills and innovation.
Technical Analysis on Mechanical Model Based Football Curveball
Feng Li,Lu Liu
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: In this study, from the angles the physics and biomechanics, in the case of the curveball generated by the rotation problem analysis and exposition, considering the speed, rotation, the wall, the goalkeeper, goaltender factors and football running track and the theory trajectory deviation factor, making the model as much as possible to simulate the actual effect and using the MATLAB software to draw the flight of the ball trajectory simulation. Reference designed for teaching, training and competition as well as to further deepen the awareness and understanding of football curveball. It can improve the free kick guidance and not only help the shooter to select the best shooting methods, but also for the goalkeeper has targeted to fighting with reference.
The Ordinary University Sports Education Specialized Aerobics Curriculum Goal and Construction
Lu Liu,Feng Li
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: In general colleges and universities to implement the" National College of physical education curriculum", the ultimate goal is to foster compound talents, the training standard raised taller requirement. With the basic education curriculum reform, close with school sports new curriculum, this study uses the literature material method, questionnaire survey and mathematical statistics and so on. In the investigation of the current middle school aerobics teaching on the basis of the status quo, analysis of the physical education major in Colleges and Universities Aerobics Curriculum problems, put forward regular college course teaching to middle school sports and healthy curriculum and teaching countermeasures.
A new composite implicit iterative process for a finite family of nonexpansive mappings in Banach spaces
Feng Gu,Jing Lu
Fixed Point Theory and Applications , 2006, DOI: 10.1155/fpta/2006/82738
Abstract: The purpose of this paper is to study the weak and strong convergence of implicit iteration process with errors to a common fixed point for a finite family of nonexpansive mappings in Banach spaces. The results presented in this paper extend and improve the corresponding results of Chang and Cho (2003), Xu and Ori (2001), and Zhou and Chang (2002).
A new composite implicit iterative process for a finite family of nonexpansive mappings in Banach spaces
Gu Feng,Lu Jing
Fixed Point Theory and Applications , 2006,
Abstract: The purpose of this paper is to study the weak and strong convergence of implicit iteration process with errors to a common fixed point for a finite family of nonexpansive mappings in Banach spaces. The results presented in this paper extend and improve the corresponding results of Chang and Cho (2003), Xu and Ori (2001), and Zhou and Chang (2002).
A New Equation of State for Dark Energy Model
Lei Feng,Tan Lu
Physics , 2012, DOI: 10.1088/1475-7516/2011/11/034
Abstract: A new parameterization for the dark energy equation of state(EoS) is proposed and some of its cosmological consequences are also investigated. This new parameterization is the modification of Efstathiou' dark energy EoS parameterization. $w (z)$ is a well behaved function for $z\gg1$ and has same behavior in $z$ at low redshifts with Efstathiou' parameterization. In this parameterization there are two free parameter $w_0$ and $w_a$. We discuss the constraints on this model's parameters from current observational data. The best fit values of the cosmological parameters with $1\sigma$ confidence-level regions are: $\Omega_m=0.2735^{+0.0171}_{-0.0163}$, $w_0=-1.0537^{+0.1432}_{-0.1511}$ and $w_a=0.2738^{+0.8018}_{-0.8288}$.
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