Subjects -> MATHEMATICS (Total: 1100 journals)
    - APPLIED MATHEMATICS (88 journals)
    - GEOMETRY AND TOPOLOGY (23 journals)
    - MATHEMATICS (812 journals)
    - MATHEMATICS (GENERAL) (43 journals)
    - NUMERICAL ANALYSIS (24 journals)

MATHEMATICS (812 journals)                  1 2 3 4 5 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 5)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4)
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 7)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 16)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 3)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 39)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 13)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 12)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 10)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 23)
Advances in Decision Sciences     Open Access   (Followers: 4)
Advances in Difference Equations     Open Access   (Followers: 3)
Advances in Fixed Point Theory     Open Access   (Followers: 8)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 19)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 11)
Advances in Materials Science     Open Access   (Followers: 19)
Advances in Mathematical Physics     Open Access   (Followers: 8)
Advances in Mathematics     Full-text available via subscription   (Followers: 17)
Advances in Nonlinear Analysis     Open Access   (Followers: 1)
Advances in Numerical Analysis     Open Access   (Followers: 9)
Advances in Operations Research     Open Access   (Followers: 13)
Advances in Operator Theory     Hybrid Journal   (Followers: 4)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 10)
Advances in Pure Mathematics     Open Access   (Followers: 11)
Advances in Science and Research (ASR)     Open Access   (Followers: 9)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 9)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 7)
Afrika Matematika     Hybrid Journal   (Followers: 3)
Air, Soil & Water Research     Open Access   (Followers: 13)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 3)
AKSIOMATIK : Jurnal Penelitian Pendidikan dan Pembelajaran Matematika     Open Access   (Followers: 1)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access   (Followers: 1)
Al-Qadisiyah Journal for Computer Science and Mathematics     Open Access   (Followers: 1)
AL-Rafidain Journal of Computer Sciences and Mathematics     Open Access   (Followers: 6)
Algebra and Logic     Hybrid Journal   (Followers: 7)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Open Access   (Followers: 5)
Algorithms     Open Access   (Followers: 12)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 10)
American Journal of Mathematical Analysis     Open Access   (Followers: 2)
American Journal of Mathematical and Management Sciences     Hybrid Journal   (Followers: 1)
American Journal of Mathematics     Full-text available via subscription   (Followers: 7)
American Journal of Operations Research     Open Access   (Followers: 8)
American Mathematical Monthly     Full-text available via subscription   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 11)
Anadol University Journal of Science and Technology B : Theoritical Sciences     Open Access  
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 6)
Analysis Mathematica     Full-text available via subscription  
Analysis. International mathematical journal of analysis and its applications     Hybrid Journal   (Followers: 5)
Anargya : Jurnal Ilmiah Pendidikan Matematika     Open Access   (Followers: 3)
Annales Mathematicae Silesianae     Open Access   (Followers: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Data Science     Hybrid Journal   (Followers: 13)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 8)
Annals of Functional Analysis     Hybrid Journal   (Followers: 4)
Annals of Mathematics     Full-text available via subscription   (Followers: 3)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 14)
Annals of PDE     Hybrid Journal   (Followers: 1)
Annals of Pure and Applied Logic     Open Access   (Followers: 4)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access  
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access  
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 2)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 3)
Applications of Mathematics     Hybrid Journal   (Followers: 3)
Applied Categorical Structures     Hybrid Journal   (Followers: 4)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 14)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics     Open Access   (Followers: 8)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 10)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 4)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 6)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 4)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 6)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 6)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Armenian Journal of Mathematics     Open Access   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 24)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian Research Journal of Mathematics     Open Access   (Followers: 1)
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 3)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 2)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access   (Followers: 1)
Baltic International Yearbook of Cognition, Logic and Communication     Open Access   (Followers: 2)
Banach Journal of Mathematical Analysis     Hybrid Journal   (Followers: 2)
Basin Research     Hybrid Journal   (Followers: 5)
BIBECHANA     Open Access   (Followers: 2)
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal   (Followers: 1)
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription   (Followers: 2)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 18)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 13)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 4)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 2)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Cadernos do IME : Série Matemática     Open Access   (Followers: 1)
Calculus of Variations and Partial Differential Equations     Hybrid Journal  
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 22)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 3)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chaos, Solitons & Fractals : X     Open Access  
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Ciencia     Open Access   (Followers: 1)
Clean Air Journal     Full-text available via subscription   (Followers: 1)
CODEE Journal     Open Access   (Followers: 3)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
College Mathematics Journal     Hybrid Journal   (Followers: 4)
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 15)
Commentarii Mathematici Helvetici     Hybrid Journal  
Communications in Advanced Mathematical Sciences     Open Access  
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 4)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 4)
Complex Analysis and its Synergies     Open Access   (Followers: 3)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Compositio Mathematica     Full-text available via subscription  
Comptes Rendus Mathematique     Full-text available via subscription  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 4)
Computational and Mathematical Methods     Hybrid Journal  
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 9)
Computational Mechanics     Hybrid Journal   (Followers: 5)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 9)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 11)
Concrete Operators     Open Access   (Followers: 4)
Confluentes Mathematici     Hybrid Journal  
Contributions to Discrete Mathematics     Open Access   (Followers: 2)
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 13)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 8)
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Daya Matematis : Jurnal Inovasi Pendidikan Matematika     Open Access   (Followers: 2)
Demographic Research     Open Access   (Followers: 15)
Demonstratio Mathematica     Open Access  

        1 2 3 4 5 | Last

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Applied Mathematics
Number of Followers: 4  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2163-1409 - ISSN (Online) 2163-1425
Published by SAP Homepage  [105 journals]
  • Fundamental Concepts of Geometry

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 3Kassahun Tesfaye AgzewThis research deals about annihilator ideal in almost semilattice(ASL) With 0 and annihilator preserving homomorphism. It is proved that the set of all annihilator ideals of an ASL L with 0 forms a complete Boolean algebra. Denition and examples of Ideal of Ring, Properties of ideal of Ring, Types of ideal of Ring, Partially ordered Set(poset), Lattice, Semilattice and Almost Semilattice concepts are also addressed. The second chapter deals about Annihilator ideal preserving homomorphism in almost semilattice. It contains two sections, that are Annihilator Ideal, and Annihilator Ideal preserving homomorphism and a sucient condition for homomorphism to be annilator preserving derived. Finally, it is proved that the homomorphic image and the inverse image of annihilator ideals are again annihilator ideals.
  • Optimal Control and Cost Effectiveness Analysis of Tomato Yellow Leaf Curl
           Virus Disease Epidemic Model

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 3Alfred Hugo, Eva Mwaseba Lusekelo, Raymond KitengesoThis paper concentrates on the mathematical model for optimal control and cost-effectiveness analysis of tomato yellow leaf curl virus disease. The boundedness of the model has been analytically examined. The preferable optimal level of the intervention strategy to reduce the spreads and the cost of implementing control strategies were determined by introducing the time-dependent control. Pontryagin’s maximum principle was used to determine necessary conditions for the optimal control of the disease while numerical results obtained through forward-backward sweep method and fourth-order Runge-Kutta scheme using the forward solution of the state equations. The cost-effectiveness analysis results show that protective netting and removal of the infected plant is the most cost-effective strategy to combat the epidemic of tomato disease with limited resources. Therefore, TYLCV can be controlled if the farmers will effectively apply protective netting and remove the infected plants from the farm.
  • Basic School Grade Retention in Ghana with Applications of Cox
           Proportional Hazard Model and Mann Whitney’s U Test

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 2Bosson-Amedenu Senyefia, James Hinson, Vivian NimohThis paper combined survey and survival studies with the aim of identifying risk factors for grade retention in Ghana. A sample of 120 basic school teachers comprising 60 male and 60 female across the 10 regions of Ghana responded to a four point likert scale with 15 items to measure perceived risk factors in the 120 sampled basic schools in Ghana. The distribution of the data did not approach the normal distribution so Mann Whitney’s U Test was employed in the analysis of the likert items. The findings of the survey research were validated with the findings of the cohort study. The second part of the study consisted of a cohort study of one private and one public school (selected through random sampling) from grade one to grade 9. Identified risk factors of grade retention in Ghana through the nonparametric analysis included children with learning difficulty (special needs), non- existing or non-operational counseling units, schools in rural community, abysmal average score, pupil in JHS level, pupil in Upper Primary level, Child’s low interest in school, Truancy and also the quest for Basic school authorities to obtain 100% pass rate in BECE results tends to increase their reluctance to register pupils who have poor academic record. The effect size for 15 Mann Whitney’s U Tests showed among others that 29.9% variability in the ranks was accounted for by “Truancy”. 78.2% variability in the ranks was accounted for by “Private School”. 37.5% variability in the ranks was accounted for by “Upper Primary status”. 16.9% variability in the ranks was accounted for by “Child interest in school”. 12.1% variability in the ranks was accounted for by “Desire of school to produce 100% passes in BECE”. The findings of the Cox PH Model validated grade level, truancy, children with learning difficulties, child’s low interest in school and low academic average score as risk predictors of grade retention in Ghana. Sex was not a significant predictor by Cox PH Model analysis. The study recommended for school authorities in Ghana to initiate interventions for pupils who show at least one of the risk factors identified in this research particularly for those pupils who show truancy which was the highest impact on grade retention, as shown by Cox PH Model analysis.
  • Patronage of Non-Life Insurance Policies: The Case of SMEs in Kumasi

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 3Edward Obeng AmoakoSMEs (small medium-scale enterprises) occupy a central part of the economy in most developing countries all around the world. SMEs are noted as the bedrock of the emerging private sector in developing countries and government assistance is paramount to sustaining and growth for the sector’s contribution to the country’s economy (World Bank report, 2000). Despite effort to enhance performance of this sector very little or no attention is given to become business recovery consciousness when uncertain events occur in the line of business. Losses caused by events such as occupational hazards, theft and burglary, traffic and motor accidents, fire outbreaks and accidental damage to property and harm caused to lives as well as unknown events have slowed down the activities of the sector and in some instance have discontinued some businesses in the sector. The need to acquire insurance cover is cardinal to both the public, private sector and stakeholders, most importantly for the success and longevity of SMEs in the country. The basic motive of the research is to establish the predictors that affect SMEs in the Kumasi metropolis to patronise non-life insurance policies as a risk management tool.
  • Application of Floyd’s Algorithm for Knust Fire Service

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 2Edward Obeng AmoakoThere have been a number of fire outbreak cases recorded in the KNUST area that has brought about loss of lives to inhabitants and loss of properties. Some routes within the district can be reconstructed into bitumen roads so that fire attackers can traverse through the district in order to prevent fire incidents. The main objective in this study is finding the minimum travel distances and shortest paths from the Knust Fire Station to all other towns in the district of Kumasi Metropolitan area in the Ashanti Region of Ghana. Shortest path algorithms of various variants have been discussed with examples in this study as well as review of abstracts of other related books and articles. The Floyd’s Algorithm has been explained in which it maximize the source node minus the destination node. It was found out that at each destination used in the objective function, the Floyd’s algorithm proceeds to obtain minimum distances to every other destination. The introductory part of the paper deals with the theory of searching for optimal routes in transport networks, including a description of each type of optimization tasks. The aim of the article is demonstration of Floyd algorithm application to find the minimal paths from each node to another in network graph - in our case the network represents traffic model of road network in the region of Knust.
  • A Bayesian Approach to Exemplify the Identification Problem in
           Discrete-time Hazards Models with Multiple Interactions

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 1Md Shakhawat HossainThe aim of this study is to discuss the weakness of the conventional way of presenting the relative intensities in multiplicative models. The identification problem in hazards models with multiple interactions is illustrated here. A proposed solution of this problem with a common baseline level rather than of using two pairs of baseline levels is demonstrated. A Bayesian approach with Markov Chain Monte Carlo (MCMC) algorithm is used to estimate the parameters of interest of a hazards model with multiple interactions. In this analysis MCMC chain has run for 12000 iterations then first 2000 are discarded as burn-in and retained 10000 for the posterior distribution. Various diagnostics like posterior autocorrelations, Gelman-Rubin diagnostic, Monte Carlo Standard Error (MCSE) are performed to check the Markov chain mixing and convergence to target posterior distribution. All these diagnostics are found statistically significant. The results are presented in a single table with common baseline level according to proposed solution. The major consequences of such presentation is that it is almost impossible to compare two separate tables entirely, while from a single table one can easily compare and interpret the results properly. Relative intensities are also computed from the posterior simulations in Bayesian analysis and presented in different tables and graphs.
  • Estimation of Tinkerbell Dynamical Map by Using Neural Network with FFT as
           Transfer Function

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 2Salah H. Abid, Saad S. Mahmood, Yaseen A. OraibiThe aim of this paper is to design a feed forward artificial neural network (Ann) to estimate two dimensional Tinkerbell dynamical map by selecting an appropriate network, transfer function and node weights. The proposed network side by side with using Fast Fourier Transform (FFT) as transfer function is used. For different cases of the system, chaotic and noisy, the experimental results of proposed algorithm will compared empirically, by means of the mean square error (MSE) with the results of the same network but with traditional transfer functions, Logsig and Tansig. The performance of proposed algorithm is best from others in all cases from Both sides, speed and accuracy.
  • The Set Ordering Method for Scoring the Outcomes of 1-2-4 Multistage Model
           of Computerized Adaptive Testing

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 1Simon RazmadzeThe paper presented considers the ordering method of outcome set for multi-stage testing (MST) of 1-2-4 model. The ordering method of outcome set is used for the estimation of results of computerized adaptive testing (CAT). This method is not tied to a specific testing procedure. Acknowledgment of this is its usage for the 1-2-4 model, which is described in the paper. To sort the set of testing outcomes the function-criteria described in the initial article are used here and a comparative analysis of obtained results is performed. The ordered outcome set is estimated by a hundred-point system according to the normal distribution.
  • Role of Time Series Analysis in Forecasting Egg Production Depending on
           ARIMA Model

    • Abstract: Publication year: 2019Source: Applied Mathematics, Volume 9, Number 1Fatma D. M. AbdallahThe goal of this study is to show the role of time series models in predicting process and to demonstrate the suitable type of it according to the data under study. Autoregressive integrated moving averages (ARIMA) model is used as a common and a more applicable model. Univariate ARIMA model is used here to forecast egg production in some layers depending on daily data from the period of May to October 2018. Different criteria of the ARIMA model can be used to choose the suitable one such as the coefficient of determination (R2), mean absolute error (MAE), root mean square error (RMSE) and mean absolute relative percentage error (MARPE). Depending on these measures the autoregressive integrated moving average model with ordering (2,2,1) is considered the best model for forecasting process. The model fit statistics such as RMSE (331.520) which was low and the lowest BIC value (11.745) indicating that the model fit the data well. The high value of R2 (0.95) and MAPE (4.542) indicated a perfect forecasting model. Also, ARIMA model with ordering (1,2,2) is good in prediction process.
  • Interval Estimation of the Availability of a Two-Compressor with Erlangian
           Repair Time

    • Abstract: Publication year: 2018Source: Applied Mathematics, Volume 8, Number 3Mohamed S. EL-Sherbeny, Zienab M. HussienThis paper presents the reliability analysis of a two-compressor (non-identical) parallel system, which is part of the refrigeration system serving an ammonia storage tank. The failure rate of any compressor is a constant and the repair time distribution is a two-stage Erlanglan distribution. Measures of system performance such as reliability, system availability, and steady-state availability are derived. Also, a consistent asymptotically normal estimator and an asymptotic confidence interval for the steady-state availability and the mean time to failure of this system are obtained. Finally, a numerical example illustrates the results.
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