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Search Results: 1 - 10 of 7691 matches for " NING "
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Complete Solutions to Mixed Integer Programming  [PDF]
Ning Ruan
American Journal of Computational Mathematics (AJCM) , 2013, DOI: 10.4236/ajcm.2013.33B005

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

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.
Factor Analysis on the Endowment Insurance System Reform for Urban Workers in China: Based on the Perspective of Institutional Change Theory  [PDF]
Ning Jiang
Open Journal of Social Sciences (JSS) , 2016, DOI: 10.4236/jss.2016.44004
Abstract: The basic endowment insurance system for urban workers is the pillar arrangement of the whole endowment insurance system in China, which makes a fundamental influence on the construction of social security system. After the 18th National Congress of the CPC, China ushered in the era of social pension system reconstruction. This paper reviewed the changing histories of endowment insurance system for urban workers, summarized the general characteristics of endowment insurance system for urban workers, and explored the factors of the endowment insurance system reform under a perspective of institutional change theory. It was found that the economic system reform, state-owned enterprise reform, and tax reform are the economic factors affecting the pension system transition, while the compartmentalization of administrative pattern and the conflicts of interest between government departments at all levels are the administrative factors to promote the reform of the endowment insurance system. There is new resistance of the comprehensive deepening reform within the new practice of institutional change, such as the dual-track system, endowment insurance model selection problem, and the overall planning for the whole country. The endowment insurance system in China is experiencing a critical period from the long-term reform to the mature stage.
The Nature of Inertial and Vacuum Gravitational Field  [PDF]
Ning Wu
Journal of Modern Physics (JMP) , 2016, DOI: 10.4236/jmp.2016.715185
Abstract: The uniformly accelerated motion is studied in the framework of gauge theory of gravity. It is found that, when an inertial reference system is transformed into a uniformly accelerated system by a local gravitational gauge transformation, a non-trivial gravitational gauge field appears. If there is a mass point in the new reference frame, there will be a non-trivial gravitational force acting on it. The nature and the characteristic of this new force are completely the same as those of the traditional inertial force. This new gravitational force is considered to be the inertial force. Therefore, the nature of inertial force is gravity, which is the basic idea of the equi-valence principle.
Corporate Quasi-Strategic Alliance via Outsourcing Transactions  [PDF]
Ning Gao
Theoretical Economics Letters (TEL) , 2018, DOI: 10.4236/tel.2018.83029
Abstract: This paper relates outsourcing parties together and tests whether the outsourcing contracts have any impact on the relationship of the two parties’ performance. Both the ex-anti and the ex-post changes in stock and accounting related performance of the contract signatories are examined. We find that after the contract effective year, there is statistically significant cross-autocorrelation between client and vendor firms’ stock returns. What’s more, on average daily returns of the client stocks lead those of the vendor stocks. We also find that accounting performance changes between the two parties show significantly higher level of cross-correlation than pre-event. Our finding of an increase in cross-autocorrelation between the ex-post performance of client and vendor firms indicates that corporate outsourcing transactions result in a quasi-strategic alliance.
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.
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