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Articles 1381 - 1410 of 2320
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Performance Analysis Of P/4 Dqpsk For Frft-Ofdm System With Carrier Frequency Offset, Ankush Kansal, Kulbir Singh, Rajiv Saxena
Performance Analysis Of P/4 Dqpsk For Frft-Ofdm System With Carrier Frequency Offset, Ankush Kansal, Kulbir Singh, Rajiv Saxena
Applied Mathematics & Information Sciences
The Orthogonal Frequency Division Multiplexing (OFDM) has widely been used in broadband wireless communication due to its ability to efficiently utilize the spectrum with multicarrier communication. In this paper BER expression for p/4 DQPSK modulation has been derived from FrFT based OFDM system in the presence of carrier frequency offset (CFO) under frequency selective Rayleigh fading channel. The performance of proposed system has been evaluated and compared with the FFT based OFDM system. It is found that the FrFT based OFDMsystem outperforms the FFT based OFDM. BER analysis has also been done for various values of a (FrFT angle parameter) …
Competition Mechanism Of False Information In Public Crisis Based On Improved Lotka-Volterra Competition Model, Xiaoxia Zhu, Hao Wang, Jiajia Hao
Competition Mechanism Of False Information In Public Crisis Based On Improved Lotka-Volterra Competition Model, Xiaoxia Zhu, Hao Wang, Jiajia Hao
Applied Mathematics & Information Sciences
In this paper, we analyzed the ecological characteristics of information diffusion networks, and incorporated it with Lotka- Volterra competition model. Based on this improved model we constructed ecosystems, competition and diffusion equation of false information in public crisis. Using this method, we studied how kinds of information decrease from n to only one by competing in information ecosystem and considered the reason why the false information is the most influential in the social network. The interesting conclusion is, if there are three types of information in ecosystem, when the information published by the official media and the information published by …
Study On The Evaluation Of Uav Disaster Monitoring System Architecture Based On The Rsbfnn Algorithmic Method, Zhifei Li, Yifan Zhu, Feng Yang, Wenguang Wang
Study On The Evaluation Of Uav Disaster Monitoring System Architecture Based On The Rsbfnn Algorithmic Method, Zhifei Li, Yifan Zhu, Feng Yang, Wenguang Wang
Applied Mathematics & Information Sciences
In disaster monitoring, Unmanned Aerial Vehicles (UAVs) are becoming more suitable than earth observing satellites and manned helicopters, especially in emergent situations. However, decisions must be made as to which attributes the UAV must possess when developing new models. Combined with NOLH experiment design and multi-agent simulation (MAS) technology, a new architecture evaluation method, termed Rough Set Based Fuzzy Neural Network (RSBFNN), is proposed to simulate and analyze both the UAV attributes and desired effectiveness. Experimental results show that this method is very dependable when comparing predicted and actual responses and yields better performance than other models. This method best …
Degradation Of Complexity For Join Enumeration Via Weight Measure On Cmp, Yongheng Chen, Kerui Chen, Yaojin Lin
Degradation Of Complexity For Join Enumeration Via Weight Measure On Cmp, Yongheng Chen, Kerui Chen, Yaojin Lin
Applied Mathematics & Information Sciences
Most contemporary database systems query optimizers exploit System-R’s Bottom-Up dynamic programming method (DP) to find the optimal query execution plan (QEP). The dynamic programming algorithm has a worst case running time, thus for queries with more than 10 joins, it becomes infeasible. To resolve this problem, random strategies are used. In this paper we propose a parallel top-down join enumeration algorithm that is optimal with respect to the partial order graph based on Chip Multi-Processor (CMP). This paper firstly transforms the undirected query graph to Weighted Edge Join Graph (WEJG) according to the edge weight and constructs all partial order …
Hopf Bifurcations In A Delayed Microscopic Model Of Credit Risk Contagion, Carlo Bianca, Luca Guerrini
Hopf Bifurcations In A Delayed Microscopic Model Of Credit Risk Contagion, Carlo Bianca, Luca Guerrini
Applied Mathematics & Information Sciences
This paper is concerned with the proof of the existence of Hopf bifurcations in a mathematical model recently proposed in [T. Chen, X. Li, and J. He, Abstract and Applied Analysis 2014, 456764 (2014)] for understanding the complex stochastic dynamics phenomena of credit risk contagion in the financial market. Specifically the model consists in an ordinary differential equation with time-delay. Moreover, by using the normal form theory and center manifold argument, the stability, direction, and period of bifurcating periodic solutions are gained.
Development Of The Multi-Level Fusion Based Security System, Jr Hung Guo, Kuo Lan Su, Song Hiang Chia
Development Of The Multi-Level Fusion Based Security System, Jr Hung Guo, Kuo Lan Su, Song Hiang Chia
Applied Mathematics & Information Sciences
The article develops the multi-level fusion based intelligent security system to be applied in home automation. The system contains some detection modules, a supervised computer, an elevator and an experimental platform. The detection modules have active detection modules and passive detection modules that are designed in our research team. The control unit of all detection modules (active and passive) is HOLTEK microchip. Mobile robots are active detection modules, and are classified more and more teams according to the detection functions. Each mobile robot of the team robot system transmits the real-time event signals to the supervised computer and the other …
Design Of The Distribution Network For A “Collect-On- Delivery” Company In A Metropolitan Context Using Simulated Annealing With Path Relinking, Chao Wang, Dong Mu
Design Of The Distribution Network For A “Collect-On- Delivery” Company In A Metropolitan Context Using Simulated Annealing With Path Relinking, Chao Wang, Dong Mu
Applied Mathematics & Information Sciences
Parcel delivery service by collect-on-delivery (COD, a.k.a. cash-on-delivery) companies is a new distribution mode in China. The design of the distribution network of a COD company in urban areas is of great importance and a relatively new research direction. In this paper, we aim to model this distribution network as a two-echelon location routing problem (2E-LRP) and propose a novel efficient optimization algorithm by combining simulated annealing (SA) and path relinking (PR) to solve this NP combinatorial optimization problem. The experimental results are reported for 84 test problems from Nguyen’s, Prodhon’s, and Sterle’s benchmark. They indicate that the proposed SA-PR …
Non-Additive Entropy Measure And Record Values, Vikas Kumar, H. C. Taneja
Non-Additive Entropy Measure And Record Values, Vikas Kumar, H. C. Taneja
Applied Mathematics & Information Sciences
Non-additive entropy measures are important for many applications.We study Havrda and Charvat entropy for record values and have shown that this characterizes the underlying distribution function uniquely. Also the non-additive entropy of record values has been derived in case of some specific distributions. Further we propose a generalized residual entropy measure for record value.
Trust-Based Service Recommendation In Social Network, Shuiguang Deng, Longtao Huang, Yuyu Yin, Weitong Tang
Trust-Based Service Recommendation In Social Network, Shuiguang Deng, Longtao Huang, Yuyu Yin, Weitong Tang
Applied Mathematics & Information Sciences
With the number of Web services increasing constantly on the Internet, how to recommend personalized Web services for users has become more and more important. At present, there emerged some service recommendation systems utilizing influence ranking and collaborative filtering algorithms in service recommendation. However, they neither considered trust relationships among users, nor deal with the cold start problem very well. Fortunately, the popularity of social network in nowadays brings a good alternative for service recommendation to avoid those. In this study, we propose a social network-based service-recommendation method, which considers users’ history service invocation behaviors, users preferences as well as …
Classifications And Properties Of (Α,Β )-Fuzzy Ideals In Ternary Semigroups, Noor Rehman, Muhammd Shabir, Young Bae Jun
Classifications And Properties Of (Α,Β )-Fuzzy Ideals In Ternary Semigroups, Noor Rehman, Muhammd Shabir, Young Bae Jun
Applied Mathematics & Information Sciences
Classifications of (a,b )-fuzzy left (right and lateral) ideals of ternary semigroups are discussed. Relations between (∈,∈ ∨q)-fuzzy left (right and lateral) ideals and (q,∈∨q)-fuzzy left (right and lateral) ideals are established. Given special sets, so called t-q-set and t-∈∨q-set, conditions for the t-q-set and t-∈∨q-set to be left (right and lateral) ideals are considered. Conditions for a fuzzy set to be an (∈,q)-fuzzy left (right and lateral) ideals, a (q,∈)-fuzzy left (right and lateral)ideals and a (q,∈∨q)-fuzzy left (right and lateral) ideals are considered. Some new characterizations of weakly regular ternary semigroups are also established. Finally, the implication-based fuzzy …
Image Retrieval Using The Improved Double Density Contourlet Transform, Xie Qingsong, Guo Jie, Li Mengjun, An Zhiyong
Image Retrieval Using The Improved Double Density Contourlet Transform, Xie Qingsong, Guo Jie, Li Mengjun, An Zhiyong
Applied Mathematics & Information Sciences
A new image retrieval algorithm based on the improved double density contourlet transform(DDCT) is proposed in this paper. The improved double density contourlet transform have the property of shift invariance and non-Gaussian for the high frequency sub-bands. In order to obtain the high frequency texture feature, we design the quantization histograms using the high frequency direction sub-bands. The 0/1 quantization is used to deal with the energy matrix of high frequency sub-bands. A texture point is defined as an 8-D vector by integrating different channel values from high frequency sub-bands and the quantization histograms are computed. In order to get …
Intelligent Expert Systems For Location Planning, Daizhong Tang, Jiangang Shi, Wei Wang
Intelligent Expert Systems For Location Planning, Daizhong Tang, Jiangang Shi, Wei Wang
Applied Mathematics & Information Sciences
We discuss and illustrate how SemanticWeb technologies can support information integration and create semantic mashups. An intelligent expert system for location planning is presented to show the efficiency of our method. Through the ontology of location planning, the expert system allows the integration of heterogeneous online location information. An integrated knowledge process is developed to guarantee the whole engineering procedure. Based on Bayesian network technique, the system recommends well planed attractions to a user by taking into account the behaviour both of the user and of other users.
Equity Volatility Smile And Skew Under A Cev-Based Structural Leverage Model, Min Chen
Equity Volatility Smile And Skew Under A Cev-Based Structural Leverage Model, Min Chen
Applied Mathematics & Information Sciences
The leverage effect is widely considered to be the major contributor to volatility skew in the stock option market. This study concentrates on explicit modeling of corporate leverage. The asset-equity relation is modeled by a perpetual American option, and the asymmetry of the asset return distribution is addressed by introducing a Constant Elasticity of Variance (CEV) asset dynamic. The model retains closed-form representation of firm equity with respect to asset and liability. This provides a convenient simplification to equity option pricing, so that the model can be calibrated to stock prices and the entire volatility structure. This model demonstrates how …
Symplectic Runge-Kutta-Nystr?M Methods With Phase-Lag Oder 8 And Infinity, Z. Kalogiratou, Th. Monovasilis, T. E. Simos
Symplectic Runge-Kutta-Nystr?M Methods With Phase-Lag Oder 8 And Infinity, Z. Kalogiratou, Th. Monovasilis, T. E. Simos
Applied Mathematics & Information Sciences
In this work we consider Symplectic Runge Kutta Nystr¨om methods with five stages. A new fourth algebraic order method with phase-lag order eight is presented. Also the symplectic Runge Kutta Nystr¨om of Calvo and Sanz Serna with five stages and fourth order is modified to produce a phase-fitted method. We apply the new methods on several Hamiltonian systems and on the computation of the eigenvalues of the Schr¨odinger Equation.
A Soft Computing Approach For Ranking Firms Based On Experts’ Valuation Of Corporate Social Responsibility, Vicente Liern, Paz Méndez-Rodr?Guez, Blanca Pérez-Gladish
A Soft Computing Approach For Ranking Firms Based On Experts’ Valuation Of Corporate Social Responsibility, Vicente Liern, Paz Méndez-Rodr?Guez, Blanca Pérez-Gladish
Applied Mathematics & Information Sciences
In this work we focus on the obtaining of an integrative measure of Corporate Social Responsibility which does not require a unique precise definition of this concept. The proposed method will allow the ranking of firms based on this integrative measure which will incorporate all the available information from different sources. Moreover, a Soft Computing method will be applied based on interval-valued fuzzy sets reflecting the uncertain, imprecise and fuzzy nature of social performance criteria. In order to illustrate the proposed method a real case study is presented.
A Biometric-Based Password Authentication With Key Exchange Scheme Using Mobile Device For Multi-Server Environment, Xuelei Li, Qiaoyan Wen, Wenmin Li, Hua Zhang, Zhengping Jin
A Biometric-Based Password Authentication With Key Exchange Scheme Using Mobile Device For Multi-Server Environment, Xuelei Li, Qiaoyan Wen, Wenmin Li, Hua Zhang, Zhengping Jin
Applied Mathematics & Information Sciences
Remote authentication for multi-server environment can help users register only once and access arbitrary services conveniently in the same registry realm. However, most of the solutions are plagued by security problems. In this paper, we point out that ‘a novel smart card and dynamic ID based remote user authentication scheme for multi-server environment’ is vulnerable to user impersonation attack, server masquerade attack and cannot achieve forward secrecy. Therefore, by introducing biometrics as the third authentication factor, we devise an enhanced three-factor based remote authentication with key agreement scheme for multiserver environment. In our designation, we combine the technologies of Client …
Enhanced Facet Ranking And Text Classifier For Opinion Mining, G. R. Brindha, S. Prakash, B. Santhi, P. Swaminathan
Enhanced Facet Ranking And Text Classifier For Opinion Mining, G. R. Brindha, S. Prakash, B. Santhi, P. Swaminathan
Applied Mathematics & Information Sciences
The enormous growth and usage of social networks offer positive ways to any business by sharing the emotions, feelings and experiences. Web users are benefited with valuable online reviews. To utilize the reviews effectively, researchers are working on necessary methods and ideas such as classification of positive and negative sense of reviews, ranking the facet in the reviews to make the effective classification etc. This study aims to propose a novel facet identification namely Facet Based Adjective identification method (FBAI) for efficient feature selection of reviews. The next algorithm FacetRank marks facet of each opinion from review set with positive, …
On The Security Of Robust Image Watermarking Algorithm Based On Discrete Wavelet Transform, Discrete Cosine Transform And Singular Value Decomposition, Khaled Loukhaoukha, Ahmed Refaey, Khalil Zebbiche, Makram Nabti
On The Security Of Robust Image Watermarking Algorithm Based On Discrete Wavelet Transform, Discrete Cosine Transform And Singular Value Decomposition, Khaled Loukhaoukha, Ahmed Refaey, Khalil Zebbiche, Makram Nabti
Applied Mathematics & Information Sciences
Among emergent applications of digital watermarking, owner identification, proof of ownership and transaction tracking are applications that protect data by embedding the owner’s information (watermark) in it. Recently, a robust image watermarking scheme based on discrete wavelet transform, discrete cosine transform and singular value decomposition was proposed by Hu et al. [1]. However, this scheme has shown some drawbacks. In this paper, we present two ambiguity attacks that clearly demonstrate the ineffectiveness of the above scheme some watermarking applications, such as proof of ownership, transaction tracking and data authentication.
Algebraic Structures Of Generalised Symmetries Of N Th-Order Scalar Ordinary Differential Equations Of Maximal Lie Point Symmetry, K. Charalambous, Pgl Leach
Algebraic Structures Of Generalised Symmetries Of N Th-Order Scalar Ordinary Differential Equations Of Maximal Lie Point Symmetry, K. Charalambous, Pgl Leach
Applied Mathematics & Information Sciences
We compute for the representative scalar ordinary differential equation of maximal point symmetry the generalised symmetries of order-one and two. We examine the Lie Brackets for the generalised symmetries and see that closure does not occur for generalised symmetries of order-two. Consequently all generalised symmetries up to the maximum order possible must be admitted.
A Network Classification Method By Using Community Structure, Xue-Guang Wang
A Network Classification Method By Using Community Structure, Xue-Guang Wang
Applied Mathematics & Information Sciences
The social networks are human-centered relationship networks and the research in this field will impact on people’s daily life. The development of the internet and the emergence of the social network sites provide a perfect platform for our research. This paper builds the social networks by large-scale datasets. We confirm and observe that they have several properties and features. We classify them according to the role-to-role connectivity profiles and finds that they are subject to stringy-periphery class.
The Generative Capacity Of Probabilistic Splicing Systems, Mathuri Selvarajoo, Sherzod Turaev, Wan Heng Fong, Nor Haniza Sarmin
The Generative Capacity Of Probabilistic Splicing Systems, Mathuri Selvarajoo, Sherzod Turaev, Wan Heng Fong, Nor Haniza Sarmin
Applied Mathematics & Information Sciences
The concept of probabilistic splicing system was introduced as a model for stochastic processes using DNA computing techniques. In this paper we introduce splicing systems endowed with different continuous and discrete probabilistic distributions and call them as probabilistic splicing systems. We show that any continuous distribution does not increase the generative capacity of the probabilistic splicing systems with finite components, meanwhile, some discrete distributions increase their generative capacity up to context-sensitive languages. Finally, we associate certain thresholds with probabilistic splicing systems and this increases the computational power of splicing systems with finite components.
Efficient Schemes For Generating Ghz-Type, W-Type And Cluster Ecs Of N-Cavity Coherent Fields, Saad Rfifi, Morad El-Baz
Efficient Schemes For Generating Ghz-Type, W-Type And Cluster Ecs Of N-Cavity Coherent Fields, Saad Rfifi, Morad El-Baz
Applied Mathematics & Information Sciences
We establish a new model for realization of three qubit C-NOT gate operations between two Rydberg atoms and coherent Cavity field. To exploit this C-NOT realization, we enhance many schemes for generation of GHZ-type and W-type entangled coherent state (ECS), to prepare n-cavities GHZ- type (ECS) and n-cavities W- type (ECS). Furthermore, we find the possibility of preparing cluster entangled coherent states using the realized three qubit C-NOT gate. Our model compared with the references schemes generation is more efficient because of simplicity of detecting coherent fields. Also, the rigidity of the model comes from the smaller interaction time needed …
The Magnetic Field Of Electrical Conducting Sheets With Two Non-Overlapping Insertions, D. M. El-Sakout, A. F. Ghaleb, M. S. Abou-Dina, A. A. Ashour
The Magnetic Field Of Electrical Conducting Sheets With Two Non-Overlapping Insertions, D. M. El-Sakout, A. F. Ghaleb, M. S. Abou-Dina, A. A. Ashour
Applied Mathematics & Information Sciences
Generalizing a previous result by two of the authors (MSA and AAA) for an infinite sheet with one insertion, we derive two coupled linear Fredholm integral equations of the second kind on two coplanar contours for the determination of the magnetic field due to an infinite plane electrical conducting sheet with two non-overlapping insertions, permeated by a uniform, parallel electric field. These equations are solved numerically to provide solutions for new problems involving two elliptic insertions. The level lines for the current function in the sheet are plotted and the results are discussed to assess the efficiency of the numerical …
An Exact Scheme For The Eit For A Three-Level L-Type Atom In A Quantum Cavity, Siamak Khademi, Ghasem Naeimi, Samira Alipour, Shoaib Mirzaei
An Exact Scheme For The Eit For A Three-Level L-Type Atom In A Quantum Cavity, Siamak Khademi, Ghasem Naeimi, Samira Alipour, Shoaib Mirzaei
Applied Mathematics & Information Sciences
Semi-quantum or full-quantum electromagnetically induced transparency has been fully studied for three-level atoms in a weak field approximation method, where probe field is very weaker than the coupling field. The weak field approximation is not valid in full-quantum model where the number of coupling photons is not so large. In the present article, the master equations for the interaction of two-mode photons with a three-level L-type atom are exactly solved and the exact dispersion and absorption spectra for the probe beam photons are also obtained analytically. The results of the exact scheme are compared with the corresponding results in the …
Note On Corrected Optimal Quadrature Formulas In Sense Nikolski, Alina Baboş, Ana Maria Acu
Note On Corrected Optimal Quadrature Formulas In Sense Nikolski, Alina Baboş, Ana Maria Acu
Applied Mathematics & Information Sciences
The optimal 2-points quadrature formulas of open type are derived and the error estimates in terms of a variety of norms involving the second derivative are considered. Also, the corrected formulas of the optimal quadrature rules are obtained.
A General Case For The Maximum Norm Analysis Of An Overlapping Schwarz Methods Of Evolutionary Hjb Equation With Nonlinear Source Terms With The Mixed Boundary Conditions, Salah Boulaaras, Mohamed Haiour
A General Case For The Maximum Norm Analysis Of An Overlapping Schwarz Methods Of Evolutionary Hjb Equation With Nonlinear Source Terms With The Mixed Boundary Conditions, Salah Boulaaras, Mohamed Haiour
Applied Mathematics & Information Sciences
In this paper we provide a maximum norm analysis of an overlapping Schwarz method on non-matching grids for evolutionary HJB equation with nonlinear source terms with the mixed boundary conditions and a general elliptic operator. Moreover, an asymptotic behavior in uniform norm is established.
An Efficient Approach For Time–Fractional Damped Burger And Time–Sharma–Tasso–Olver Equations Using The Frdtm, Mahmoud Saleh Rawashdeh
An Efficient Approach For Time–Fractional Damped Burger And Time–Sharma–Tasso–Olver Equations Using The Frdtm, Mahmoud Saleh Rawashdeh
Applied Mathematics & Information Sciences
The objective of this paper is to use the fractional reduced differential transform method (FRDTM) to find approximate analytical solutions to the time-fractional Sharma–Tasso–Olver equation and the time-fractional damped Burger equation. The fractional derivatives are described in the Caputo sense. We compare our results with those from existing methods such as the homotopy analysis method (HAM), variation iteration method (VIM) and the Adomian decomposition method (ADM). Also, the results we obtained in this paper are in a good agreement with the exact solutions; hence, this technique is powerful and efficient as an alternative method for finding approximate and exact solutions …
A Hybrid Lqp Alternating Direction Method For Solving Variational Inequality Problems With Separable Structure, Abdellah Bnouhachem, Abdelouahed Hamdi
A Hybrid Lqp Alternating Direction Method For Solving Variational Inequality Problems With Separable Structure, Abdellah Bnouhachem, Abdelouahed Hamdi
Applied Mathematics & Information Sciences
In this paper, we presented a logarithmic-quadratic proximal alternating direction method for structured variational inequalities. The method generates the new iterate by searching the optimal step size along the descent direction. Global convergence of the new method is proved under certain assumptions.
Some Remarks On Geometry Of Fractional Calculus, Wedad Saleh, Adem Kılıçman
Some Remarks On Geometry Of Fractional Calculus, Wedad Saleh, Adem Kılıçman
Applied Mathematics & Information Sciences
In recent years, researchers interested in the field of fractals and related subjects have also begun using the concept of fractional calculus in some of their investigations. In this paper, some interesting aspects and features of fractional connection derivatives in differential manifold were discussed. In particular, transformation of Christoffel symbols for fractional connection, the torsion tensor of a fractional connection, and difference tensor of two fractional connection are presented.
Geometrically Nonconvex Functions And Integral Inequalities, Muhammad Aslam Noor, Mihai Postolache, Khalida Inayat Noor, Muhammad Uzair Awan
Geometrically Nonconvex Functions And Integral Inequalities, Muhammad Aslam Noor, Mihai Postolache, Khalida Inayat Noor, Muhammad Uzair Awan
Applied Mathematics & Information Sciences
In this paper, we consider and investigate geometrically nonconvex functions. We derive several Hermite-Hadamard type inequalities for geometrically (GG) nonconvex (relative convex) function and geometrically arithmetically (GA) nonconvex (relative convex) functions. We also obtain some fractional Hermite-Hadamard type inequalities. It is shown that one can obtain the previously known results as special cases from our results. The ideas and techniques of this paper may inspire further research in this field.