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International Journal of Difference Equations最新文献

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Small Functions and Uniqueness of Difference Differential Polynomials of L-functions 小函数与l函数差分微分多项式的唯一性
International Journal of Difference Equations Pub Date : 2020-12-30 DOI: 10.37622/IJDE/15.2.2020.151-163
N. Mandal, N. Datta
{"title":"Small Functions and Uniqueness of Difference Differential Polynomials of L-functions","authors":"N. Mandal, N. Datta","doi":"10.37622/IJDE/15.2.2020.151-163","DOIUrl":"https://doi.org/10.37622/IJDE/15.2.2020.151-163","url":null,"abstract":"In this paper, we study the value distributions of L-functions in the extended Selberg class. We prove two theorems which shows how difference differential polynomials of L-functions and difference differential polynomials of meromorphic functions uniquely determined concerning weighted sharing of small or rational functions. Our results improve and generalize some recent results due to W. J. Hao, J. F. Chen [3], W. Q. Zhu, J. F. Chen [16] and N. Mandal, N. K. Datta [10]. 2010 Mathematics Subject Classification: 11M36, 30D35","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91318307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Mobile Robot Path Navigation in Static Indoor Environment via AOR 9-Point Laplacian Iteration Numerical Technique 基于AOR 9点拉普拉斯迭代数值技术的静态室内移动机器人路径导航
International Journal of Difference Equations Pub Date : 2020-12-30 DOI: 10.37622/IJDE/15.2.2020.231-242
W. Ling, A. A. Dahalan, A. Saudi
{"title":"Mobile Robot Path Navigation in Static Indoor Environment via AOR 9-Point Laplacian Iteration Numerical Technique","authors":"W. Ling, A. A. Dahalan, A. Saudi","doi":"10.37622/IJDE/15.2.2020.231-242","DOIUrl":"https://doi.org/10.37622/IJDE/15.2.2020.231-242","url":null,"abstract":"Mobile robot path navigation is a crucial subject in robotics research and development. The navigation efficiency of a robot correlates directly with its overall performance. With persistent technological growth, the improvement potentials for autonomous robotic remains vast. The objective of this paper is to investigate the performance of the iteration technique called Accelerated Overrelaxation 9-Point (AOR-9P) Laplacian in enabling path navigation for mobile robots. This technique is a derivation from Laplace's equation which is used to calculate the potential fields in the 2-dimensional configuration space representation of an environment. The robotic path navigations are performed in a simulation called Robot 2D Simulator, written in Delphi Project software. After obtaining the solutions generated through AOR-9P iterative technique, the Gradient Descent Search (GDS) technique is employed to determine the best path for the mobile robot to traverse on. The performance of AOR-9P is examined by comparing the number of iterations needed to complete the navigation process. Results shown that AOR-9P enabled path navigation requires the least number of iterations to complete, thus having better performance than its predecessor techniques. In the same time, the paths produced are generally smooth and unobstructed all the way towards the goal point. For future improvements, it is recommended that the Half-Sweep (HS) and Quarter-Sweep (QS) approach to be introduced on AOR-9P iteration technique to improve its performance in solving the mobile robot path navigation problem.","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81698342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determination of An Optimal Control Strategies for The Discrete Time Addictive Buying Model with The Consumer Confidence Index 具有消费者信心指数的离散时间上瘾购买模型的最优控制策略确定
International Journal of Difference Equations Pub Date : 2020-12-30 DOI: 10.37622/IJDE/15.2.2020.197-214
Thiti Prasertjitsun, Walailuck Chavanasporn, S. Koonprasert
{"title":"Determination of An Optimal Control Strategies for The Discrete Time Addictive Buying Model with The Consumer Confidence Index","authors":"Thiti Prasertjitsun, Walailuck Chavanasporn, S. Koonprasert","doi":"10.37622/IJDE/15.2.2020.197-214","DOIUrl":"https://doi.org/10.37622/IJDE/15.2.2020.197-214","url":null,"abstract":"In this paper, we propose a discrete addictive buying model including two controls: influencer and voucher marketing campaign in order to describe the dynamic of behavior between the classes of buyers, namely, rational buyers, excessive buyers, and addictive buyers. The model also associate with the Consumer Confidence Index (CCI) in Thailand. Identifications of consumer’s buying behavior were done by fitting curve techniques based on real databases of CCI, or activity of buyers. We apply Pontryagin’s maximum principle in discrete time that is used to characterize the optimal controls and the optimality system is solved by an iterative method. Finally, some numerical simulations are performed to verify the theoretical analysis using MATLAB program.","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"854 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72727555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Economic Design of the Double Sampling X Chart with Measurement Errors 带有测量误差的双抽样X图的经济设计
International Journal of Difference Equations Pub Date : 2020-12-30 DOI: 10.37622/IJDE/15.2.2020.259-274
K. S. Khee Yong Si, Ming Ha Lee, Xinying Chew, M. Lau, Kong Melinda, H. H. Then Patrick, S. Rashid
{"title":"The Economic Design of the Double Sampling X Chart with Measurement Errors","authors":"K. S. Khee Yong Si, Ming Ha Lee, Xinying Chew, M. Lau, Kong Melinda, H. H. Then Patrick, S. Rashid","doi":"10.37622/IJDE/15.2.2020.259-274","DOIUrl":"https://doi.org/10.37622/IJDE/15.2.2020.259-274","url":null,"abstract":"Objective: The purpose of this study is to investigate the effect of measurement errors on the economic design of the double sampling (DS) X chart. Methods/Statistical analysis: The economic design of the DS X chart with measurement errors is investigated by using the linear covariate error model. The optimal design parameters of the DS X chart are determined through the minimization of the cost function. The effect of the measurement errors is evaluated based on the numerical example over a wide range of the parameters of the measurement errors, where the parameters of the measurement errors are the coefficient B and the measurement error ratio. Findings: The numerical results show that an increase in the value of the coefficient B or a decrease in the value of the measurement error ratio in the linear covariate error model leads to the lower false alarm rate and cost with more frequent sampling interval and 260 K. S. Khee Yong Si et al smaller number of multiple measurements per item. It can be noticed that the sample sizes at the first and second stages of the DS scheme as well as the out-of-control statistical performance of the DS X chart are robust to the measurement errors. In addition, the warning and control limits of the DS X chart are also not affected by the measurement errors. Application/Improvements: An example is provided to illustrate the implementation of the economic design of the DS X chart with measurement errors.","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76613258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
The Effect of Intangible Assets on Capital Structure 无形资产对资本结构的影响
International Journal of Difference Equations Pub Date : 2020-12-30 DOI: 10.37622/IJDE/15.2.2020.275-282
Yiting Peng, Justine S. Chang, Jia-Ying Zhang
{"title":"The Effect of Intangible Assets on Capital Structure","authors":"Yiting Peng, Justine S. Chang, Jia-Ying Zhang","doi":"10.37622/IJDE/15.2.2020.275-282","DOIUrl":"https://doi.org/10.37622/IJDE/15.2.2020.275-282","url":null,"abstract":"The study mainly examines whether there is effect of intangible assets on capital structure. Test was conducted on data of electronic industry in Taiwan for seven years prior and after the adoption of IFRS. Result of the study showed that the effect of intangible assets on companies’ capital structure is positive, yet not significant, before the adoption of IFRS, but is significantly positive after the adoption of IFRS. Tangible assets also appear to have significantly positive effect on companies’ capital structure both before and after the adoption of IFRS. Thus, the importance of intangible assets in measuring companies’ solvency upon financing is yet to be studied further.","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76326016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Dynamic Malware Detection in Cloud Platform 基于云平台的动态恶意软件检测
International Journal of Difference Equations Pub Date : 2020-12-30 DOI: 10.37622/IJDE/15.2.2020.243-258
Nani Lee Yer Fui, A. Asmawi, M. Hussin
{"title":"A Dynamic Malware Detection in Cloud Platform","authors":"Nani Lee Yer Fui, A. Asmawi, M. Hussin","doi":"10.37622/IJDE/15.2.2020.243-258","DOIUrl":"https://doi.org/10.37622/IJDE/15.2.2020.243-258","url":null,"abstract":"Abstract of thesis presented to the Senate of Universiti Putra Malaysia in fulfilment of the requirement for the degree of Master of Information Security Abstract: Cloud Computing platform is the practices of remote manage network resources such as storage, application hosted on the internet rather than physical server or personal computer. Hence cloud computing not only provides high availability on elastic resources, scalable and cost efficient. This is why this this platform is widely used in information technology (IT) to support technology infrastructure and services. However, due to the complexity environment and scalability of services, one of a highest security issue is malware attacks; where some of the antivirus scanner unable to detect metamorphic malware or encrypted malware where these kind of malware","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85919957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
On the Approximation Solutions of linear and nonlinear Volterra Integral Equation of First and Second kinds by Using B-spline Tight Framelets Generated by Unitary Extension Principle and Oblique Extension Principle 用由酉扩展原理和斜扩展原理生成的b样条紧框架近似解一、二类线性和非线性Volterra积分方程
International Journal of Difference Equations Pub Date : 2020-12-30 DOI: 10.37622/IJDE/15.2.2020.165-189
Y. Al-jarrah
{"title":"On the Approximation Solutions of linear and nonlinear Volterra Integral Equation of First and Second kinds by Using B-spline Tight Framelets Generated by Unitary Extension Principle and Oblique Extension Principle","authors":"Y. Al-jarrah","doi":"10.37622/IJDE/15.2.2020.165-189","DOIUrl":"https://doi.org/10.37622/IJDE/15.2.2020.165-189","url":null,"abstract":"Framelets methods are a very useful tool in the approximation for the piecewise smooth functions, and have fast decomposition and reconstruction algorithms associated with them. In this article, we present a numerical method for solving linear and nonlinear Volterra integral equations of the first and second kinds. Our method is based on the use of quasi-affine tight framelets systems generated by the unitary extension principle and oblique extension principle. Many different examples of framelets systems and their graphs are provided. The solution of the integral equation is based on converting the integral equation to a system of linear equations. We prove the convergence theorem for the numerical solution of linear Volterra integral equation of the second kind. Finally, we present numerical examples of solving linear and nonlinear Volterra integral equations to ensure the validity of our method. Comparisons of the results with other methods are included in the examples.","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89450446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Oscillation and Asymptotic Behavior of Second-Order Neutral Delay Difference Equations with Variable Delays 二阶变时滞中立型时滞差分方程的振动性和渐近性
International Journal of Difference Equations Pub Date : 2020-06-01 DOI: 10.37622/ijde/15.1.2020.107-126
C. Behera, R. Rath
{"title":"Oscillation and Asymptotic Behavior of Second-Order Neutral Delay Difference Equations with Variable Delays","authors":"C. Behera, R. Rath","doi":"10.37622/ijde/15.1.2020.107-126","DOIUrl":"https://doi.org/10.37622/ijde/15.1.2020.107-126","url":null,"abstract":"In this article, sufficient conditions are obtained for the oscillation of all solutions of the second-order neutral delay difference equation","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78169014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Qualitative Analysis of Nonconvolution Volterra Summation Equations 非卷积Volterra求和方程的定性分析
International Journal of Difference Equations Pub Date : 2019-06-05 DOI: 10.37622/ijde/14.1.2019.75-89
Y. Raffoul
{"title":"Qualitative Analysis of Nonconvolution Volterra Summation Equations","authors":"Y. Raffoul","doi":"10.37622/ijde/14.1.2019.75-89","DOIUrl":"https://doi.org/10.37622/ijde/14.1.2019.75-89","url":null,"abstract":"This paper is first in a series of papers in which we consider the vector nonconvolution Volterra summation equation x(t) = a(t)− t−1 ∑ s=0 C(t, s)x(s), t ∈ Z where x and a are k-vectors, k ≥ 1, while C is an k × k matrix. Fixed point theorem, combined with resolvent and Lyapunov functionals are utilized to obtain conditions for boundedness of solutions, the existence of asymptotically periodic solution and the decay of solutions to zero. AMS Subject Classifications: 34D20, 34D40, 34K20.","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81691566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Global Dynamics of a Cooperative System with Ceiling Density Dependence 具有上限密度依赖的合作系统的全局动力学
International Journal of Difference Equations Pub Date : 2019-06-04 DOI: 10.37622/ijde/14.1.2019.59-74
M. Kulenović, S. Beaver
{"title":"Global Dynamics of a Cooperative System with Ceiling Density Dependence","authors":"M. Kulenović, S. Beaver","doi":"10.37622/ijde/14.1.2019.59-74","DOIUrl":"https://doi.org/10.37622/ijde/14.1.2019.59-74","url":null,"abstract":"","PeriodicalId":36454,"journal":{"name":"International Journal of Difference Equations","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78825504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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