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Search Results: 1 - 10 of 64973 matches for " Hui Wu "
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Community Fragmentation? A 15-Year Study of Residents Perception on Tourism Development  [PDF]
Xinqi Wu, Hong Hui
Journal of Service Science and Management (JSSM) , 2018, DOI: 10.4236/jssm.2018.116041
Abstract: Tourism development may result in polarization among the community residents with simple social relations, mutual misunderstanding or even hostility between the foreign residents and indigenous residents. Such conflict and estrangement between resident relationship is called the “effect of community fragmentation” of tourism development. Based on a study of Ciqikou, which is an ancient town, this paper found that, the “effect of community fragmentation” did exist and such effect may cause the “crowding-out effect”, which would influence the continuous development of tourism. Therefore, the paper proposes that a new benefit mechanism for tourism must be explored, to benefit all the residents in scenic region from the tourism development; to avoid the “crowding-out effect”, legislation based on house reservation to indigenous residents must be enacted to ensure their residences would not be occupied by external capital; tourism development must take the realization of community development as the basic target.
A Study of Two Functions of Modal Auxiliary Verbs in English, with Special Reference to Can, May and Must
Hui Wu
English Language Teaching , 2008, DOI: 10.5539/elt.v1n2p159
Abstract: Many linguisticians in the English research field have detailedly illustrated all kinds of usage of English grammars and roles. However, in the modal auxiliary verbs of English, they have also stated their opinions, but deontic modality and epistemic modality have not been completely studied. Especially, how we transfer of deontic function to epistemic function, and the metaphorical extension in the process by the force dynamics between them is an extremely important aspect. The problem aroused my interest to study. In order to study further language continuous development, I begin from expounding the metaphorical extension of the epistemic function from deontic function, and then infer my own opinions as the conclusion of the thesis.
Study on the Gain Material with Four Energy Level Model Using FDTD Method  [PDF]
Hui Xue, Zhixiang Huang, Xianliang Wu
Optics and Photonics Journal (OPJ) , 2013, DOI: 10.4236/opj.2013.32B004
Abstract:

A faster numerical method based on FDTD for the four energy level atomic system is present here. The initial conditions for the electrons of each level are achieving while the fields are in steady state. Polarization equation, rate equations of electronic population and Maxwell’s equations were used to describe the coupling between the atoms and electromagnetic wave. Numerical simulations, based on a finite-difference time-domain (FDTD) method, were utilized to obtain the population inversion and lasing threshold. The validity of the model and its theory is confirmed. The time, which we can observe the lasing phenomenon, is much shorter in our new model. Our model can be put into using in large scale simulations in mutiphysics to reduce the total simulated time.

The Role Transition Researches of the Government in Public Service Outsourcing  [PDF]
Hui Wu, Feng Pan, Yue Zhang
Open Journal of Business and Management (OJBM) , 2015, DOI: 10.4236/ojbm.2015.34047
Abstract: Public service outsourcing is a modern public service supply pattern, which the government takes advantage of the market and society to product and supply public services. Because of the characters of innovation, fashion and practicability, public service outsourcing has shown its multiple values and has been popular with the local government. The government mainly plays the role in rule-maker, public service-buyer and order-supervisor. However, in the process of role transition, our government faces ideological, institutional and ability obstacles, either. Therefore, with the purpose of reducing government outsourcing obstacles and improving the level of government management and service, this paper tries to establish a relatively complete system of public service outsourcing and offers several suggestions including perfecting the institutional construction, establishing diversified safeguard mechanisms and strengthening the construction of the government to build a service-oriented government.
Application of Perception Theory in Hotel Interior Design  [PDF]
Hui Yu, Ge Bai, Liang Wu
Open Journal of Applied Sciences (OJAppS) , 2018, DOI: 10.4236/ojapps.2018.87021
Abstract: The purpose of this article is to explore the application of perception theory in hotel interior design. Through the analysis of the theory of perception, the article sums up its connection with the interior design of Modern Hotel, and sums up the hotel interior design method under the influence of three factors of visual perception, space-time perception, logical perception so as to improve the level of humanization. Finally it will provide a basis for hotel interior design in the future.
Customer Segmentation of Credit Card Default by Self Organizing Map  [PDF]
Hui Wu, Chang-Chun Wang
American Journal of Computational Mathematics (AJCM) , 2018, DOI: 10.4236/ajcm.2018.83015
Abstract: In this paper we applied the technique of Self Organizing Map (SOM) to segment individuals based on their credit information. SOM is an unsupervised machine learning method that reduces data complexity and dimensionality while keeping sits original topology, which is superior to other dimension reduction methods especially when features in data have unclear nonlinear relations. Through this method we provide more clear and intuitive segmentation that other traditional methods cannot achieve.
Rapid and Sensitive Determination of Trace Chloride Ion in Drinks Using Resonance Light Scattering Technique
Hui Cao,Dong Hui Wu
Journal of Analytical Methods in Chemistry , 2008, DOI: 10.1155/2008/745636
Abstract: A resonance light scattering (RLS) technique to determine chloride ions in drinks was developed. Chloride ions were found to bind Ag
Simulation in Software Engineering with System Dynamics: A Case Study
Minghui Wu,Hui Yan
Journal of Software , 2009, DOI: 10.4304/jsw.4.10.1127-1135
Abstract: There are many complexities including dynamic behavior and feedback mechanism as well as various interacting factors in the practical software development. Software Engineering education is facing difficulties because students have limited engineering experience and they can hardly understand typical phenomena occurring in software projects. System Dynamics is a continuous modeling method describing the interaction between project factors. It forces one to consider system behavior in global view. The simulation models encapsulate collective knowledge of software engineering fields. They support the training that the students can interact with to practice project control, which will help students understand the key factors and behaviors in complex scenarios. In this paper, Brooks’ Law and the effects of Pair Programming in eXtreme Programming (XP) were used as case study to demonstrate the basic concepts, analysis and modeling processes of system dynamics. The simulation results show the advantages of the approach. Finally, the uses of system dynamics approach in critical areas of software engineering are presented.
LMI-Based Stability Criteria for Discrete-Time Neural Networks with Multiple Delays
Hui Xu,Ranchao Wu
Advances in Mathematical Physics , 2013, DOI: 10.1155/2013/732406
Abstract: Discrete neural models are of great importance in numerical simulations and practical implementations. In the current paper, a discrete model of continuous-time neural networks with variable and distributed delays is investigated. By Lyapunov stability theory and techniques such as linear matrix inequalities, sufficient conditions guaranteeing the existence and global exponential stability of the unique equilibrium point are obtained. Introduction of LMIs enables one to take into consideration the sign of connection weights. To show the effectiveness of the method, an illustrative example, along with numerical simulation, is presented. 1. Introduction During the past decades, various types of neural networks have been proposed and investigated intensively, since they play important roles and have found successful applications in fields such as pattern recognition, signal and image processing, nonlinear optimization problems, and parallel computation. The dynamical behaviors in neural models, such as the existence and their asymptotic stability of equilibria, periodic solutions, bifurcations, and chaos, have been the most active areas of research and have been extensively explored over the past years [1–22]. Due to the finite transmission speed of signals among neurons, time delays in interactions between neurons frequently happen and will cause complex dynamics in neural networks [6]; so it is necessary to introduce time delays into the neural models. So far, discrete, time-varying, and distributed delays have been, respectively, introduced to describe the dynamics of neural networks, and various sufficient conditions ensuring the stability have been given. Note that in numerical simulation and practical implementations, discretization of continuous-time models is necessary and of great importance. On the other hand, the dynamics of discrete-time neural networks could be quite different from those of continuous versions and will display much more complicated behaviors. So it is of great theoretical and practical significance to study the dynamics of discrete neural models. For discrete models, such as discrete Hopfield, bidirectional associate memory, and Cohen-Grossberg neural networks, several authors [1, 7–22] have studied the existence and exponential stability of equilibria and periodic solutions. In this paper, a discrete model with both variable and distributed time delays is introduced. By Lyapunov stability theory and linear matrix inequality (LMI) technique, sufficient conditions ensuring the existence and globally exponential stability of a
Statistical studies of random lasing modes and amplified spontaneous emission spikes in weakly scattering systems
Xiaohua Wu,Hui Cao
Physics , 2007, DOI: 10.1103/PhysRevA.77.013832
Abstract: We measured the ensemble-averaged spectral correlation functions and statistical distributions of spectral spacing and intensity for lasing modes in weakly scattering systems, and compared them to those of the amplified spontaneous emission spikes. Their dramatic differences illustrated the distinct physical mechanisms. Our numerical simulation revealed that even without reabsorption the number of potential lasing modes might be greatly reduced by local excitation of a weakly scattering system. The lasing modes could be drastically different from the quasimodes of the passive system due to selective amplification of the feedback from the scatterers within the local gain region.
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