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OALib Journal期刊

ISSN: 2333-9721

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2018 ( 9 )

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2015 ( 190 )

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How Should We Manage China’s National Parks? A Comparative Analysis between National Parks in China and the US  [PDF]
Linghong Kong, Yangcui Ning, Long Chen
Open Access Library Journal (OALib Journal) , 2018, DOI: 10.4236/oalib.1104030
Abstract:
This paper analyses the differences between policies in Chinese and American national parks, including the role of communities, the permitting and reservation system, and camping. It also describes additional recom-mendations related to developing community-based tourism, the e-commerce market, and data statistics tools. What is the best way to support communities economically at the boundaries of national parks? The American experience shows that tourism and ecotourism can be an important economic opportunity for local communities in China. Communities can provide tourism services. They can bring in revenue by operating facilities like hotels, restaurants, groceries, gas, and transportation services. While establishing Chinese National Parks, the government will need to pay close attention to developing and supporting economic development in and near parks, with a special emphasis on building strong relationships with communities. By comparing case studies of American and Chinese national parks, this paper will explore how communities can drive economic development.
Complete Solutions to Mixed Integer Programming  [PDF]
Ning Ruan
American Journal of Computational Mathematics (AJCM) , 2013, DOI: 10.4236/ajcm.2013.33B005
Abstract:

This paper considers a new canonical duality theory for solving mixed integer quadratic programming problem. It shows that this well-known NP-hard problem can be converted into concave maximization dual problems without duality gap. And the dual problems can be solved, under certain conditions, by polynomial algorithms.

Change of Space-Time Structure under Lorentz Transformation  [PDF]
Ning Wu
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.510097
Abstract:

When we study Lorentz transformation in the framework of quantum gauge theory of gravity, we will find that the vacuum gravitational gauge field will be changed under gravitational gauge transformation, which will change the structure of the physical space-time and cause clock dilation effect. The study in this paper provides us with new insights to understand the essential and intrinsic relation between special relativity and general relativity. It provides us with a new way to unify special relativity and general relativity.

A Pedagogical Framework for Web-Based Autonomous English Learning in Chinese Context from the Perspective of Eco-Constructivism  [PDF]
Dali Ning
Open Journal of Modern Linguistics (OJML) , 2015, DOI: 10.4236/ojml.2015.54032
Abstract: The application of on web-based autonomous English learning (WAEL) in China has shown serious problems in recent years. Combining language ecology theory and constructivism, this paper proposes a pedagogical framework guided by eco-constructivism. It then gives advice from perspectives of curriculum design, its operation and evaluation, and shares the successful experience of learning community construction and formative evaluation operation in Guangdong University of Foreign Studies. The writer hopes that this research will shed light on the construction of a sustainable development of WAEL in China and e-teaching in context worldwide.
Comparative Review of QoS-Aware On-Demand Routing in Ad Hoc Wireless Networks  [PDF]
Ning Zhang, Alagan Anpalagan
Wireless Sensor Network (WSN) , 2010, DOI: 10.4236/wsn.2010.24038
Abstract: In this paper, a representative set of QoS models and QoS-aware on-demand routing protocols are reviewed with emphasis on their ability to support QoS in mobile ad-hoc networks (MANETs) possibly used in WSNs. In particular IntServ, DiffServ, FQMM, and SWAN QoS models are reviewed followed by different QoS-aware on-demand routings in MANETs from different perspectives such as the challenges, classifications, algorithmic aspects in QoS provisions. Tradeoff in providing support to real time (RT) and best effort (BE) traffic is highlighted. Finally, a detailed and comprehensive comparison table is provided for better understanding of QoS provision in MANETs.
Cyber-Physical-Social Based Security Architecture for Future Internet of Things  [PDF]
Huansheng Ning, Hong Liu
Advances in Internet of Things (AIT) , 2012, DOI: 10.4236/ait.2012.21001
Abstract: As the Internet of Things (IoT) is emerging as an attractive paradigm, a typical IoT architecture that U2IoT (Unit IoT and Ubiquitous IoT) model has been presented for the future IoT. Based on the U2IoT model, this paper proposes a cyber-physical-social based security architecture (IPM) to deal with Information, Physical, and Management security perspectives, and presents how the architectural abstractions support U2IoT model. In particular, 1) an information security model is established to describe the mapping relations among U2IoT, security layer, and security requirement, in which social layer and additional intelligence and compatibility properties are infused into IPM; 2) physical security referring to the external context and inherent infrastructure are inspired by artificial immune algorithms; 3) recommended security strategies are suggested for social management control. The proposed IPM combining the cyber world, physical world and human social provides constructive proposal towards the future IoT security and privacy protection.
Operator Equation and Application of Variation Iterative Method  [PDF]
Ning Chen, Jiqian Chen
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.38127
Abstract: In this paper, we study some semi-closed 1-set-contractive operators A and investigate the boundary conditions under which the topological degrees of 1-set contractive fields, deg (I-A, Ω, p) are equal to 1. Correspondingly, we can obtain some new fixed point theorems for 1-set-contractive operators which extend and improve many famous theorems such as the Leray-Schauder theorem, and operator equation, etc. Lemma 2.1 generalizes the famous theorem. The calculation of topological degrees and index are important things, which combine the existence of solution of for integration and differential equation and or approximation by iteration technique. So, we apply the effective modification of He’s variation iteration method to solve some nonlinear and linear equations are proceed to examine some a class of integral-differential equations, to illustrate the effectiveness and convenience of this method.
Blow-Up and Attractor of Solution for Problems of Nonlinear Schrodinger Equations  [PDF]
Ning Chen, Jiqian Chen
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.312263
Abstract: In this paper, the authors study the blow-up of solution for a class of nonlinear Schrodinger equation for some initial boundary problem. On the other hand, the authors give out some analyses and that new conclusion by Eigen-function method. In last section, the authors check the nonlinear parameter for light rule power by using of parameter method to get ground state and excite state correspond case, and discuss the global attractor of some fraction order case, and combine numerical test. To illustrate this physics meaning in dimension d = 1, 2 case. So, by numerable solution to give out these wave expression.
Some Approximation in Cone Metric Space and Variational Iterative Method  [PDF]
Ning Chen, Jiqian Chen
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.312276
Abstract: In this paper, we give some new results of common fixed point theorems and coincidence point case for some iterative method. By using of variation iteration method and an effective modification of He’s variation iteration method discusses some integral and differential equations, we give out some new conclusion and more new examples.
An Adaptive Least-Squares Mixed Finite Element Method for Fourth Order Parabolic Problems  [PDF]
Ning Chen, Haiming Gu
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.44092
Abstract:

A least-squares mixed finite element (LSMFE) method for the numerical solution of fourth order parabolic problems analyzed and developed in this paper. The Ciarlet-Raviart mixed finite element space is used to approximate. The a posteriori error estimator which is needed in the adaptive refinement algorithm is proposed. The local evaluation of the least-squares functional serves as a posteriori error estimator. The posteriori errors are effectively estimated. The convergence of the adaptive least-squares mixed finite element method is proved.

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