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Articles 1441 - 1470 of 2320
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An Alternative Solution Technique Of The Jit Lot-Splitting Model For Supply Chain Management, Kun-Jen Chung, Tien-Yu Lin, H. M. Srivastava
An Alternative Solution Technique Of The Jit Lot-Splitting Model For Supply Chain Management, Kun-Jen Chung, Tien-Yu Lin, H. M. Srivastava
Applied Mathematics & Information Sciences
Recently, Kim and Ha [S.-L. Kim and D. Ha, A JIT lot-splitting model for supply chain management: Enhancing buyersupplier linkage, Internat. J. Prod. Econ. 86 (2003), 1–10] proposed a model to determine the optimal order quantity, the number of shipments and size delivered over a finite planning horizon in a JIT single-buyer and single-supplier scenario. Kim and Ha’s model is interesting. However, their solution procedure and some theoretical results may not be generally true. In this paper, we propose an analytical solution procedure free from using convexity to correct and improve on Kim and Ha’s model. Some flaws shown in …
A Class Of Extended One-Step Methods For Solving Delay Differential Equations, F. Ibrahim, A. A. Salama, S. Turek
A Class Of Extended One-Step Methods For Solving Delay Differential Equations, F. Ibrahim, A. A. Salama, S. Turek
Applied Mathematics & Information Sciences
In this paper, we derive a class of extended one-step methods of order m for solving delay-differential equations. This class includes methods of fourth and fifth order of accuracy. Also, the class of these methods depends on two free parameters. A convergence theorem and convergence factor of these methods are given. Stability regions for such methods are determined in terms of the time-lag t . Some numerical examples are given to illustrate the effectiveness of the numerical schemes.
Stability Analysis Of The Beddington Model With Allee Effect, Unal Ufuktepe, Sinan Kapçak, Olcay Akman
Stability Analysis Of The Beddington Model With Allee Effect, Unal Ufuktepe, Sinan Kapçak, Olcay Akman
Applied Mathematics & Information Sciences
We investigate the stability of the equilibria and the invariant manifolds of the host-parastoid model due to Beddington, Free, and Lawton [2] subject to the Allee effect.
An Axiomatic Characterization Of Generalized Entropies Under Analyticity Condition, Velimir M. Ilić, Miomir S. Stanković
An Axiomatic Characterization Of Generalized Entropies Under Analyticity Condition, Velimir M. Ilić, Miomir S. Stanković
Applied Mathematics & Information Sciences
We present axiomatic characterizations of the Nath, R´enyi and Havrda-Charv´at-Tsallis entropies under the assumption that they are analytic functions with respect to the distribution dimension, unlike the previous characterizations, which suppose that they are expandable and maximized for uniform distribution.
Modeling Of The Selecting Optimum Cross Section Of Open Canals, E. A. Nysanov, S. D Kurakbayeva, Zh. R. Umarova, S. B. Botayeva, Z. A. Makhanova
Modeling Of The Selecting Optimum Cross Section Of Open Canals, E. A. Nysanov, S. D Kurakbayeva, Zh. R. Umarova, S. B. Botayeva, Z. A. Makhanova
Applied Mathematics & Information Sciences
we discuss the problem of selecting optimum form of the cross section of open canals with the aim of the maximum transportation at the permanent flow of viscous biphasic medium. Semielliptical, semicircular, parabolical and trapezoidal cross sections have been considered. Comparing the consumptions for various cross sections among themselves in the equal areas, we define the optimum section with maximum consumption, that is with the maximum transportation of the flow.
Towards Human-Like Bimanual Movements In Anthropomorphic Robots: A Nonlinear Optimization Approach, E. Costa E Silva, M. F. Costa, J .P. Ara?Jo, D. Machado, L. Louro, W. Erlhagen
Towards Human-Like Bimanual Movements In Anthropomorphic Robots: A Nonlinear Optimization Approach, E. Costa E Silva, M. F. Costa, J .P. Ara?Jo, D. Machado, L. Louro, W. Erlhagen
Applied Mathematics & Information Sciences
Previously we have presented a model for generating human-like arm and hand movements on an unimanual anthropomorphic robot involved in human-robot collaboration tasks. The present paper aims to extend our model in order to address the generation of human-like bimanual movement sequences which are challenged by scenarios cluttered with obstacles. Movement planning involves large scale nonlinear constrained optimization problems which are solved using the IPOPT solver. Simulation studies show that the model generates feasible and realistic hand trajectories for action sequences involving the two hands. The computational costs involved in the planning allow for real-time human robot-interaction. A qualitative analysis …
Conservation Of The Cylindrical And Elliptic Cylindrical K-P Equations, Joseph Boon Zik Hong, K. Fakhar, S. Ahmad, A. H. Kara
Conservation Of The Cylindrical And Elliptic Cylindrical K-P Equations, Joseph Boon Zik Hong, K. Fakhar, S. Ahmad, A. H. Kara
Applied Mathematics & Information Sciences
We study the invariance properties and exact solutions of the Kadomtsev-Petviashvili equation and construct its conservation laws and that of its transformed elliptic and elliptic-cylindrical versions. Then, it is shown how the conservation laws and related quantities of the transformed versions may be attained by applying the transformation variables as opposed to independent calculations which are often cumbersome for high order partial differential equations of ‘many’ variables.
A Retrial Inventory System With Impatient Customers, V. S. S. Yadavalli, N. Anbazhaga, K. Jeganathan
A Retrial Inventory System With Impatient Customers, V. S. S. Yadavalli, N. Anbazhaga, K. Jeganathan
Applied Mathematics & Information Sciences
This article presents a stochastic inventory system under continuous review at a service facility consisting of a finite waiting room and a single server, in which two types of customers arrive in Poisson processes with arrival rates l1 for high priority and l2 for low priority customers. The low priority customers arrive only for repair. The inventory is replenished according to an (s, S) policy and the replenishing times are assumed to be exponential. The service times follow exponential distributions with parameters m1 and m2 for high and low priority customers respectively. Retrial and impatience are introduced for low priority …
Kumaraswamy Modified Inverse Weibull Distribution: Theory And Application, Gokarna Aryal, Ibrahim Elbatal
Kumaraswamy Modified Inverse Weibull Distribution: Theory And Application, Gokarna Aryal, Ibrahim Elbatal
Applied Mathematics & Information Sciences
In this article, we propose a generalization of the modified inverse Weibull distribution. The generalization are motivated by the recent work of Cordeiro et al. [2] and are based on the Kumaraswamy distribution. The generalized distribution is called the Kumaraswamy modified inverse Weibull(KMIW) distribution. We provide a comprehensive description of the structural properties of the subject distribution and explore some of its special cases. It will be shown that the analytical results are applicable to model real world data.
Evolution Of Translation Surfaces In Euclidean 3-Space E3, H. N. Abd-Ellah
Evolution Of Translation Surfaces In Euclidean 3-Space E3, H. N. Abd-Ellah
Applied Mathematics & Information Sciences
Geometry and kinematics have been intimately connected in their historical evolution and, although it is currently less fashionable, the further development of such connections is crucial to many computer-aided design and manufacturing. In this paper, the evolution of the translation surfaces and their generating curves in E3 are investigated. Integrability conditions of the Gauss-Weingarten equations are obtained. Kinematics of moving frame fields associated to these surfaces are described. The evolution equations of the Christoffel symbols, the second fundamental quantities and Gauss-Codazzi equations for the motion are established. Thus, the evolution equations of the curvatures in terms of their intrinsic geometric …
Pvidss: Developing A Wsn-Based Irrigation Decision Support System (Idss) For Viticulture In Protected Area, Northern China, Zhang Xiaoshuan, Wen Qian, Tian Dong, Hu Jinyou
Pvidss: Developing A Wsn-Based Irrigation Decision Support System (Idss) For Viticulture In Protected Area, Northern China, Zhang Xiaoshuan, Wen Qian, Tian Dong, Hu Jinyou
Applied Mathematics & Information Sciences
The vineyard management is evolving from manual mode to automatic information management, especially in protected area culture mode. The conventional irrigation technology is a kind of the inefficient water usage technology. This paper developed PVIDSS: an irrigation system based onWireless Sensor Network (WSN) to provide an effective way to improve the irrigation efficiency. Firstly, the interview, survey and document review were carried out to identify the main factors affecting the vine’s growth and exact the system requirement, irrigation rules. Then, the architecture of PVIDSS was design based on the function requirement. Integrating the WSN based on ZigBee, the system monitors …
Research On Nonlinear Robust Control Based On The Power Consumption Efficiency Model Of Asynchronous Motor, Jiangyun Li, Rui Li
Research On Nonlinear Robust Control Based On The Power Consumption Efficiency Model Of Asynchronous Motor, Jiangyun Li, Rui Li
Applied Mathematics & Information Sciences
This paper implements nonlinear robust control for the asynchronous motor with iron loss, derives and establishes the efficiency model for asynchronous motor with controllable power loss, and put forward to realize the accurate linearization of model with controllable power loss and high-precision tracking and control of speed and flux linkage of rotor through the state feedback precise linearization algorithm of MIMO system.The output of affine nonlinear system is tracked and controlled through the design of nonlinear robust controller. The simulation results show that with this control method energy saving control of asynchronous motor can be realized indirectly, so that the …
Noise Tracking Algorithm For Speech Enhancement, M. Kalamani, S. Valarmathy, M. Krishnamoorthi
Noise Tracking Algorithm For Speech Enhancement, M. Kalamani, S. Valarmathy, M. Krishnamoorthi
Applied Mathematics & Information Sciences
In this paper, the improved noise tracking algorithm for speech enhancement is proposed. This method is used to detect the speech presence probability based on chi square distribution. During speech presence period, the time varying smoothing factor is adjusted. In addition, the estimated noise variance is recursively smoothed then averaged for various noises. This proposed method can track the noise signal with different input SNR (0dB and 5dB) levels. The performance of the proposed and the existing methods are evaluated by various noise conditions. From these evaluated results, it is observed that the proposed method reduces the performance measures as …
Solving Multiple Traveling Salesman Problem Using The Gravitational Emulation Local Search Algorithm, Ali Shokouhi Rostami, Farahnaz Mohanna, Hengameh Keshavarz, Ali Asghar Rahmani Hosseinabadi
Solving Multiple Traveling Salesman Problem Using The Gravitational Emulation Local Search Algorithm, Ali Shokouhi Rostami, Farahnaz Mohanna, Hengameh Keshavarz, Ali Asghar Rahmani Hosseinabadi
Applied Mathematics & Information Sciences
Multiple Travelling Salesman Problem (mTSP) is one of the most popular and widely used combinatorial optimization problems in the operational research. Many complex problems can be modeled and solved by the mTSP. To solve the mTSP, deterministic algorithms cannot be used as the mTSP is an NP-hard optimization problem. Hence, heuristics approaches are usually applied. In this paper, the Gravitational Emulation Local Search (GELS) algorithm is modified to solve the symmetric mTSP. The GELS algorithm is based on the local search concept and uses two main parameters in physics, velocity and gravity. Performance of the modified GELS has been compared …
Key Management Mechanism For Authentication Security In Wireless Sensor Network, Ying Wang, Xinguang Peng, Jing Bian
Key Management Mechanism For Authentication Security In Wireless Sensor Network, Ying Wang, Xinguang Peng, Jing Bian
Applied Mathematics & Information Sciences
Since the multi-user broadcast authentication protocol in current WSN cannot provide strong safety, perfect scalability and low energy consumption simultaneously. A certificateless key managing scheme based on identity is studied in this paper. The proposed method divides the broadcasting in WSN into two parts: users broadcasting and base station broadcasting. We also adopt different password schemes for system safety. At the user end, a short signature protocol is used for signature and authentication on the broadcasting packet to acquire scalability and low power consumption; at the base station end, partial message recovered Schnorr signature is adopted to protect its broadcasting. …
Monte Carlo Simplification Model For Traveling Salesman Problem, Dong Wang, Dong-Mei Lin
Monte Carlo Simplification Model For Traveling Salesman Problem, Dong Wang, Dong-Mei Lin
Applied Mathematics & Information Sciences
Traveling Salesman Problem (TSP) is one of classical NP-hard problems in the field of combinatorial optimization. It is because of the problem complexity that almost all of the accurate computing algorithm could not find the global optimal solution (GOS) in a reasonable time. The complexity is characterized by the large number of edges in the initial edge set of TSP. By analyzing the relationship between GOS and high-quality local optimal solutions, it is found that the edge union set of some local optimal solutions could include most even all edges of GOS, and that their edge intersection could fix partial …
Analysis And Control Of A Three-Dimensional Autonomous Chaotic System, Abdollah Gholizadeh, Hassan Saberi Nik, Amin Jajarmi
Analysis And Control Of A Three-Dimensional Autonomous Chaotic System, Abdollah Gholizadeh, Hassan Saberi Nik, Amin Jajarmi
Applied Mathematics & Information Sciences
In this paper, a novel three-dimensional (3D) autonomous chaotic system is investigated, which displays complicated dynamical behaviors. Basic dynamical properties are analyzed by means of phase portraits and equilibria. Also, an optimal control law is designed for the novel chaotic system, based on the Pontryagin minimum principle (PMP). Furthermore, an adaptive and feedback control law is introduced to stabilize the new chaotic system with unknown parameters. The adaptive control results are established using the Lyapunov stability theory. Numerical simulations are included to demonstrate the efficiency and high accuracy of the proposed method.
The Master Manipulator Control System In A Master-Slave Robot Based On Trinocular Stereo Vision, Qiong Liu, Leilei Cao, Jiang Chen, Zhaoxia He
The Master Manipulator Control System In A Master-Slave Robot Based On Trinocular Stereo Vision, Qiong Liu, Leilei Cao, Jiang Chen, Zhaoxia He
Applied Mathematics & Information Sciences
In this paper, a master manipulator control system in a master-slave robot which uses trinocular stereo vision is presented. The system utilizes three real-time cameras to identify and track the movements of the master handle, while also measuring the master handle position. The system follows a basic four step process. First, within the image the master handle is identified using the contrast between the handle and the background. Second, the speed and direction of the master handle’s next position is predicted in real-time by using the Kalman filter. Third, the position of the master handle is measured in real time …
Divisible On-Line/Off-Line Proxy Re-Signature, Xiaodong Yang, Chunmei Li, Yan Li, Sian Zhou, Caifen Wang
Divisible On-Line/Off-Line Proxy Re-Signature, Xiaodong Yang, Chunmei Li, Yan Li, Sian Zhou, Caifen Wang
Applied Mathematics & Information Sciences
To improve the real-time efficiency of proxy re-signature schemes, a notion called divisible on-line/off-line proxy resignatures is introduced in this paper. The idea of this notion is to split the re-signing algorithm into two phases: the off-line and on-line phases. The proxy can perform the bulk of re-signature computation in the off-line phase before seeing the message to be re-signed. The results of this pre-computation are saved and then used in the on-line phase after the message to be re-signed is given. Divisible on-line/off-line proxy re-signatures are very useful in a particular scenario where the proxy must respond quickly once …
An Integrated Approach Based On Markov Chain And Cellular Automata To Simulation Of Urban Land Use Changes, Jiejun Huang, Yanyan Wu, Ting Gao, Yunjun Zhan, Wei Cui
An Integrated Approach Based On Markov Chain And Cellular Automata To Simulation Of Urban Land Use Changes, Jiejun Huang, Yanyan Wu, Ting Gao, Yunjun Zhan, Wei Cui
Applied Mathematics & Information Sciences
Land use change is one of the most important scientific research themes in the field of global environmental change. Due to the presence of uncertainty and randomness in the real world, it is difficult to simulate land use change exactly. To address the spatial uncertainty and temporal randomness in land use change, we propose a model for simulating land use change based on Markov chain and cellular automata (CA), and describes its application to the simulation of land use changes in the city ofWuhan, China. To simulate the urban land use change, the transition rules of the model were first …
High Speed Motion Control System With Predictive Observer And Its Parameters Optimization, Lei Zhou, Jiangang Li, Zexiang Li, Lanhui Fu
High Speed Motion Control System With Predictive Observer And Its Parameters Optimization, Lei Zhou, Jiangang Li, Zexiang Li, Lanhui Fu
Applied Mathematics & Information Sciences
The traditional control of high speed motion control system usually employs feedforward control to provide phase advance. In this paper, we proposed a predictive observer to compensate phase lags in the feedback loop. By employing the observer, the velocity and the position controller can be designed as for a plant does not have phase lag elements. Then, loop gains can be enlarged and motion speed can be improved. There are two sets of parameters need to be set, the controller’s and the observer’s. We applied least square algorithm for model estimation and simplex method for controller auto tuning. The algorithms …
Neural Network Pid Control Based Scheduling Mechanism For Cloud Computing, Xiaoqi Xing, Bin Liu, Dongyi Ling
Neural Network Pid Control Based Scheduling Mechanism For Cloud Computing, Xiaoqi Xing, Bin Liu, Dongyi Ling
Applied Mathematics & Information Sciences
With the progress of academia and industry, cloud computing is moving from theory to practice. Job scheduling is an important issue in the high performance cloud computing environment. An appropriate scheduling mechanism can efficiently reduce the response time and enhance the user experience. However, most of the traditional scheduling mechanisms focus on the response time or the security, and the load balancing strategy is static, which cannot satisfy the new trend of development of cloud computing. Based on the new features of multi-users and multi-tasks in the open computing environment, the paper proposes a fuzzy neural network PID (Proportional+Integral+Derivative) control …
Error Correcting Codes In Wireless Sensor Networks: An Energy Perspective, Nabil Ali Alrajeh, Umair Marwat, Bilal Shams, Syed Saddam Hussain Shah
Error Correcting Codes In Wireless Sensor Networks: An Energy Perspective, Nabil Ali Alrajeh, Umair Marwat, Bilal Shams, Syed Saddam Hussain Shah
Applied Mathematics & Information Sciences
Wireless Sensor Networks (WSNs) are energy constraint networks that require reliable data communication at a low cost of energy. Only one particular error correcting code (ECC) cannot be adopted for all applications and scenarios of WSNs. The use of a specific ECC depends on the requirements of the application and the constraints of the WSN. Hence it is very challenging to choose an optimum error correcting code for a WSN where both, the performance and energy consumption are taken into account. The selection of an optimum error correcting code for wireless sensor network has been widely studied by many researchers …
Applications Of First Integral Method To Some Complex Nonlinear Evolution Systems, Marwan Alquran, Qutaibeh Katatbeh, Banan Al-Shrida
Applications Of First Integral Method To Some Complex Nonlinear Evolution Systems, Marwan Alquran, Qutaibeh Katatbeh, Banan Al-Shrida
Applied Mathematics & Information Sciences
The aim of the present paper is to study nonlinear system of partial differential equations (PDEs) involving both complexand real-valued unknown functions. We shall extend the use of the first integral method ”based on the theory of commutative algebra” to construct new solutions to the coupled Higgs field equations, the Davey-Sterwatson (DS) equations and the coupled Klein-Gordon- Zakharov equations. All the algebraic computations in this work are performed using Mathematica software.
Some Fixed Point Theorems For Symmetric Hausdorff Function On Hausdorff Spaces, Vishal Gupta, Hassen Aydi, Naveen Mani
Some Fixed Point Theorems For Symmetric Hausdorff Function On Hausdorff Spaces, Vishal Gupta, Hassen Aydi, Naveen Mani
Applied Mathematics & Information Sciences
The main objective of this paper is, to prove some fixed point theorems in Hausdorff spaces by using the symmetric Hausdorff function. Here, we are introducing a more generalized contractive condition for the existence and uniqueness of fixed point. Also, we are giving solution of some integral type mathematical models in Hausdorff spaces.
A Convenient Ready-To-Use Algorithm For A Conditional Quantile Estimator, Piotr Kulczycki, Małgorzata Charytanowicz, Antoni Leon Dawidowicz
A Convenient Ready-To-Use Algorithm For A Conditional Quantile Estimator, Piotr Kulczycki, Małgorzata Charytanowicz, Antoni Leon Dawidowicz
Applied Mathematics & Information Sciences
This paper contains a complete procedure for calculating the value of a conditional quantile estimator. The concept is based on the nonparametric kernel estimator method, which frees the algorithm from the random variables’ distributions. The procedure was worked out in a ready-to-use form – specific formulas for functions and the parameter used were given. The practical implementation of this method is very simple, and its computational complexity is linear with respect to random sample size as well as the dimension of conditioning variable. Thanks to a clear, near intuitive interpretation it can easily be modified or generalized depending on the …
Complete Solutions For A Combinatorial Puzzle In Linear Time And Its Computer Implementation, Daxin Zhu, Yingjie Wu, Lei Wang, Xiaodong Wang
Complete Solutions For A Combinatorial Puzzle In Linear Time And Its Computer Implementation, Daxin Zhu, Yingjie Wu, Lei Wang, Xiaodong Wang
Applied Mathematics & Information Sciences
In this paper we study a single player game consisting of n black checkers and m white checkers, called shifting the checkers. We have proved that the minimum number of steps needed to play the game for general n and m is nm+n+m. We have also presented an optimal algorithm to generate an optimal move sequence of the game consisting of n black checkers and m white checkers, and finally, we present an explicit solution for the general game.
A Framework And Decision Rules For Emergency Medical Service Scheduling Dss, Lu Zhen, Shaopu Sheng, Zhenhua Xie, Kai Wang
A Framework And Decision Rules For Emergency Medical Service Scheduling Dss, Lu Zhen, Shaopu Sheng, Zhenhua Xie, Kai Wang
Applied Mathematics & Information Sciences
This paper proposes a framework of decision support system (DSS) for emergency medical service scheduling. The scheduling decision rules embedded in the DSS consider the criteria on the average response time and the percentage of the medical service requests that are responded within fifteen minute, which is usually ignored in traditional scheduling policies. The challenge in designing the DSS lies in the stochastic and dynamic nature of request arrivals, fulfillment processes, and complex traffic conditions as well as the time-dependent spatial patterns of some parameters complicate the decisions in the problem. To illustrate the proposed DSS’s usage in practice, a …
Doa Estimation For Arbitrary Four-Sensor Array Configurations Based On Three-Dimensional Sound Intensity Measurement, Jie Shi
Applied Mathematics & Information Sciences
Vector sound intensity probe can be used to determine the DOA of a sound source by measuring the three orthogonal components of the sound-intensity vector. Typical vector sound intensity probes are composed of six or four sensors with symmetric structures. Such probes, in our opinion, are still not convenient for engineering implementation. A four-sensor vector sound intensity probe with arbitrary configurations is proposed here. The flexible structure of this probe allows it easily fix in any platform. In this paper, the direction finding algorithm based on this four-sensor probe is investigated first, then the error in direction estimates caused by …
License Plate State Recognition Based On Logo Matching And State Name String Classification, Zhongyan Liang, Sanyuan Zhang, Xiuzi Ye
License Plate State Recognition Based On Logo Matching And State Name String Classification, Zhongyan Liang, Sanyuan Zhang, Xiuzi Ye
Applied Mathematics & Information Sciences
In most countries, vehicle license plates contain both alphanumeric characters and the state/province of origin. State/province recognition of the license plate provides additional information to the traffic management agency and guidance information, aiding in character segmentation and in recognition. Existing methods use the character string of the state name only. Unfortunately, in some countries, the state name is too small to be captured clearly by a low-definition video camera and may also be obstructed by the license plate frame. In this study, we analyze the characteristics of license plates and propose an issuing state recognition method based on adaptive unique …