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Search Results: 1 - 10 of 75382 matches for " Song YANG "
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A Privacy Enabled Fast Dynamic Authentication and Authorization for B3G/4G Mobility  [PDF]
Zhikui CHEN, Song YANG
Communications and Network (CN) , 2009, DOI: 10.4236/cn.2009.12012
Abstract: Mobile technologies make their headway by offering more flexibility to end-users and improve the productivities. Within the application of ubiquitous access and pervasive communication, security (or privacy) and QoS (Quality of Service) are two critical factors during global mobility, so how to get a smooth and fast handover based on a user privacy protected infrastructure is our focus. Based on a user-centric vir-tual identity defined by EU IST project Daidalos, this paper firstly proposes an effective infrastructure which protects the context-driven access policies for online services in order to avoid attacks by malicious eaves-droppers. In the proposed infrastructure, SMAL and Diameter are used to securely protect and deliver au-thenticated and authorized entities and XACML is used to authorize the user-level privacy policy. On the basis of it, a dynamic fast authentication and authorization handover mechanism is proposed which can save one trip communication time consummation between administrative domains.
Generalized Alternating-Direction Implicit Finite-Difference Time-Domain Method in Curvilinear Coordinate System  [PDF]
Wei Song, Yang Hao
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.25042
Abstract: In this paper, a novel approach is introduced towards an efficient Finite-Difference Time-Domain (FDTD) algorithm by incorporating the Alternating Direction Implicit (ADI) technique to the Nonorthogonal FDTD (NFDTD) method. This scheme can be regarded as an extension of the conventional ADI-FDTD scheme into a generalized curvilinear coordinate system. The improvement on accuracy and the numerical efficiency of the ADI-NFDTD over the conventional nonorthogonal and the ADI-FDTD algorithms is carried out by numerical experiments. The application in the modelling of the Electromagnetic Bandgap (EBG) structure has further demonstrated the advantage of the proposed method.
Research on the Relationship between Geographical Factors, Sports and Culture  [PDF]
Minyong Song, Yang Zhang
Advances in Physical Education (APE) , 2018, DOI: 10.4236/ape.2018.81008
Abstract: In order to find out the relationship between geographical factors and sports and their culture, and to achieve the harmonious development between them,?the methods of literature and logical analysis were used to study the influence of climate factors, terrain factors and geographical factors on sports and its culture. Climate changes will affect the sports conditions, but also interfere with the athletes?body mechanism and emotion, thereby affecting athletic ability. Topography has a great influence on the emergence and development of sports. The geographical environment is closely related to sports and sports culture. The difference of human culture is related to the local geographical environment and national characteristics. Every ethnic culture is derived and developed under the influence of a specific natural geographical environment. At the same time, in the development and promotion of sports and sports culture, the geographical environment will produce positive and negative changes.
Theoretical Details of Tunnel Magnetoresistance via inelastic hopping at regime $gμB\ll k_B T \ll eV$
Yang Song
Physics , 2014,
Abstract: Detailed theoretical derivation is given for the tunnel magnetoresistance via phonon-assisted hopping through an impurity chain under small magnetic field and a large bias window. This derivation provides a rigorous basis for the physical picture of Pauli blockade switch proposed in our previous paper (arXiv:1404.0633). This picture captures the competition of external magnetic field and internal spin interactions in the tunnel barrier, and relies critically on the strong on-site Coulomb correlation at the impurities. The master equations are obtained by deriving the equations of motion for the Green functions at the impurity sites in a slave-boson representation, and utilizing the so-called Langreth theorem to finally express the spin-dependent density matrix in terms of the equilibrium distributions of the contact electrons and of the phonon reservoir.
The Application of Microlecture in College English Teaching Process in China  [PDF]
Yang Song
Open Access Library Journal (OALib Journal) , 2016, DOI: 10.4236/oalib.1102782
Abstract:
Since the year 1978 English has begun to be a compulsory course in most Chinese University; over the past several decades the teaching method of English courses was basically dependent on the traditional lecture form. As the rapid development of information technology, traditional Chinese English teaching mode has lost the attraction for young learners. Therefore, an innovative change is desired in English teaching area in Chinese colleges to adapt to the trend of social development. Meanwhile, the use of microlecture in the western world has installed new inspiration to China’s English teaching. This thesis is based on the study of former relevant researches and teaching cases of microlecture, aiming to provide thinking angels for teaching reform and innovation in Chinese colleges.
Dichlorophosphinic bis(2-chloroethyl)amide
Erqun Song,Yang Song
Acta Crystallographica Section E , 2013, DOI: 10.1107/s1600536812049586
Abstract: In the title compound, C4H8Cl4NOP, the two chloroethyl groups are not related by crystallographic symmetry. The difference in the conformation of the two groups is shown by their N—C—C—Cl torsion angles of 64.57 (15) and 175.62 (10)°.
Wronskian and Grammian Solutions for Generalized (n + 1)-Dimensional KP Equation with Variable Coefficients  [PDF]
Hongwei Fu, Yang Song, Juan Xu
Applied Mathematics (AM) , 2012, DOI: 10.4236/am.2012.32024
Abstract: The generalized (n + 1)-dimensional KP equation with variable coefficients is investigated in this paper. The bilinear form of the equation has been obtained by the Hirota direct method. In addition, with the help of Wronskian technique and the Pfaffian properties, Wronskian and Grammian solutions have been generated.
Effects of N rates on N uptake and yield in erect panicle rice  [PDF]
Guiyun Song, Zhengjin Xu, Hengshan Yang
Agricultural Sciences (AS) , 2013, DOI: 10.4236/as.2013.49067
Abstract:

The field experiment was conducted in 2005 and 2006 at Northern Japonica Rice Cultivation and Breeding Research Center, Shenyang Agricultural University,Shenyang, northeast China. Shennong 265 (typical erect panicle rice cultivar), and Liaojing 294 (traditional semi-erect panicle rice cultivar) were grown under different N rates to assess N uptake and N use efficiency. Nitrgen (N) uptake of two rice cultivars increased in their response to N improvement. Grain N of Liaojing 294 predominantly came from root absorption on low N treatments, while grain N of Shennong 265 mainly came from root absorption and had less N re-transferring from vegetative organs under high N rates. Shennong 265 produced less N uptake before heading and more N uptake after heading than Liaojing 294. GY was highly related with N fertilizer rate (r2 = 0.870** for Shennong 265, r2 = 0.613* for Liaojing 294). Shennong 265 was a N-unefficient genotype, since it produced low yield at low N levels and responded well to N application. Liaojing 294 was a N-efficient genotype producing high yield at both low and high N rates. NNG and NFUE exhibited positive correlation with N application rates, but NUEPG showed negative correlation with N application rates; GY as well as BIO and N uses efficiency parameters (TN, NNG, NFUE) which were all positively correlate, while the correlation between GY as well as BIO and the other N efficiency indicators expressed negative correlation. The relationship between GY and TN as well as BIO and TN was observed with significant difference (r2 = 0.824**, r2 = -0.858

Some General Inequalities for Choquet Integral  [PDF]
Xiuli Yang, Xiaoqiu Song, Leilei Huang
Applied Mathematics (AM) , 2015, DOI: 10.4236/am.2015.614201
Abstract: With the development of fuzzy measure theory, the integral inequalities based on Sugeno integral are extensively investigated. We concern on the inequalities of Choquuet integral. The main purpose of this paper is to prove the H?lder inequality for any arbitrary fuzzy measure-based Choquet integral whenever any two of these integrated functions f, g and h are comonotone, and there are three weights. Then we prove Minkowski inequality and Lyapunov inequality for Choquet integral. Moreover, when any two of these integrated functions f1, f2, , fn are comonotone, we also obtain the Hölder inequality, Minkowski inequality and Lyapunov inequality hold for Choquet integral.
A Comparative Study on the Typical Models of International Innovation-Type Regional Development  [PDF]
Haochen Yang, Haiyuan Zhao, Wei Song
Open Journal of Social Sciences (JSS) , 2018, DOI: 10.4236/jss.2018.63020
Abstract:
The differences in resource endowment and economic and cultural back-ground in different cities form different types of innovative urban development models gradually. From the perspective of major innovative cities development practices abroad, depending on the different industry, the innovation-oriented city construction can be divided into high-tech innovation-oriented city, traditional industrial manufacturing innovation-oriented city, service industry innovation-oriented city and cultural industries innovation-oriented city (Hospers, 2003). The study selects the strategies and measures of regions of Boston in America, London in UK, Tokyo in Japan, Nordrhein-Westfalen in Germany to analyze, compare, and summarize their experience of development, and accordingly analyzes its enlightenment to the other innovation-type provinces construction of China.
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