Yazar "Basaran, Murat Alper" seçeneğine göre listele

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    A new approximation method based on linear programming for fuzzy division
    (WORLD SCIENTIFIC AND ENGINEERING ACAD AND SOC, 2008) Basaran, Murat Alper; Aladag, Cagdas Hakan; Kadilar, Cem; Demiralp, M; Mikhael, WB; Caballero, AA; Abatzoglou, N; Tabrizi, MN; Leandre, R
    Instead of doing arithmetic operations using fuzzy membership functions for fuzzy numbers, parameterized representation of fuzzy numbers have been used in arithmetic operations in the literature. The most applied parameterized fuzzy numbers used in many of the research papers are symmetric and asymmetric triangular and trapezoidal fuzzy numbers. Although addition and subtraction of parameterized fuzzy numbers give closed form results, multiplication and division of these fuzzy numbers generate approximated results. Therefore, some approximation methods have been proposed for fuzzy multiplication and division. In this study, we propose a new approximation method based on linear programming for fuzzy division. In order to show the applicability of the proposed method, some examples are solved using this method and the: results are compared with those generated by other methods in the literature. The proposed method has produced better results than those generated by the others.
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    A novel hybrid method for better evaluation: Evaluating university instructors teaching performance by combining conventional content analysis with fuzzy rule based systems
    (PERGAMON-ELSEVIER SCIENCE LTD, 2011) Basaran, Murat Alper; Kalayci, Nurdan; Atay, Mehmet Tarik
    Even though engineering and applied sciences deal with numerical data, they have successfully implemented fuzzy logic by using fuzzy rule based (FRB) systems by verbalizing data. On the other hand, social sciences such as sociology, education and physiology transform verbal type data into numerical values by using Likert type scale. Despite the fact that fuzzy set theory deals with verbal data very powerfully, social science fields in general have avoided to implement it to their verbal data up until now. One of the most active research areas in education field which generates verbal data is student evaluation of teaching (SET) questionnaires which are related to Total Quality Management applications in most of the competitive universities in the world. In this paper, we propose a novel hybrid method, which combines conventional content analysis (CCA) method and FRB systems and this new hybrid method is more suitable for the verbal data obtained from SET questionnaires. This novel CCA-FRB (conventional content analysis based fuzzy rule based systems) method uses a sample of 138 junior students from Gazi University in Turkey to implement the proposed method. (C) 2011 Elsevier Ltd. All rights reserved.
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    Comment to paper entitled "Application of the analytical hierarchy process in the selection of desalination plants" in 174 (2005) 97-108
    (ELSEVIER SCIENCE BV, 2010) Basaran, Murat Alper; Dilek, Emine Figen; Atay, Mehmet Tarik
    The paper entitled "Application of the analytical hierarchy process in the selection of desalination plants" used Analytical Hierarchy Process in order to choose the best desalination plant using four alternatives (technologies) and seven selection criteria. In the conclusion part of the above mentioned study, the final decision made by the authors was that the RO process was the most appropriate technology and the most important criteria was the cost. However, this suggestion cannot be inferred from the results given by the authors since some matrices are inconsistent matrices which means that revising and re-scaling those matrices must be necessary before continuing further calculations, and there are also many minor and major miscalculations that exist throughout the paper. (C) 2010 Elsevier B.V. All rights reserved.
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    Investigation of Structure-Activity Relationship Between Chemical Structure and CCR5 Anti HIV-1 Activity in a Class of 1-[N-(Methyl)-N- (Phenylsulfonyl) Amino]-2-(Phenyl)-4-[4-(Substituted)Piperidin-1-yl]Butane Derivatives: The Electronic-Topological Approach
    (BENTHAM SCIENCE PUBL LTD, 2011) Saracoglu, Murat; Kandemirli, Sedat Giray; Basaran, Murat Alper; Sayiner, Hakan; Kandemirli, Fatma
    The relationship between chemical structure and CCR5 anti HIV-1 activity was investigated in the series of 1-[N-(Methyl)-N-(phenylsulfonyl)amino]-2-(phenyl)-4-[4-(substituted) piperidin-1-yl]butanes derivatives including 114 molecules by using the Electron-Topological Method (ETM). In the frameworks of this approach, its input data were taken as the results of conformational and quantum-mechanical calculations. Conformational analysis and quantum-chemical calculations were carried out for each molecule. Then molecular fragments being specific for active molecules and non-active molecules were revealed by using ETM. The result of testing showed the high ability of ETM in predicting the activity and inactivity investigated series. In order to classify and to develop a model for those molecules, cluster and discriminant analyses are conducted. First, cluster analysis is implemented in order to classify similar molecules into the groups. Then, discriminant analysis is used to construct models including descriptors. By doing so, two obtained discriminant functions segregate those molecules into three different groups by using the descriptors called E-HOMO, Dipole Moment and SEZPE.
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    Numerical and Soft Computing Methods for Characteristic Value Problems of ODE and ODEs Systems
    (HINDAWI PUBLISHING CORPORATION, 2013) Atay, Mehmet Tarik; Simonetti, Biagio; Coskun, Safa Bozkurt; Venkatesan, D.; Basaran, Murat Alper; Squillante, Massimo
    [Abstract Not Available]
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    The effect of neighborhood structures on tabu search algorithm in solving course timetabling problem
    (PERGAMON-ELSEVIER SCIENCE LTD, 2009) Aladag, Cagdas Hakan; Hocaoglu, Gulsum; Basaran, Murat Alper
    The course timetabling problem must be solved by the departments of Universities at the beginning of every semester. It is a though problem which requires department to use humans and computers in order to find a proper course timetable. One of the most mentioned difficult nature of the problem is context dependent which changes even from departments to departments. Different heuristic approaches have been proposed in order to solve this kind of problem in the literature. One of the efficient solution methods for this problem is tabu search. Different neighborhood structures based on different types of move have been defined in studies using tabu search. In this paper, the effects of moves called simple and swap on the operation of tabu search are examined based on defined neighborhood structures. Also, two new neighborhood structures are proposed by using the moves called simple and swap. The fall semester of course timetabling problem of the Department of Statistics at Hacettepe University is solved utilizing four neighborhood structures and the comparison of the results obtained from these structures is given. (C) 2009 Elsevier Ltd. All rights reserved.