Recently Added Theses
View AllObject relocation in a mobile computing environment
MaROS is an application development platform, which offers a solution to strengthen the weak aspects of mobile systems such as low network bandwidth, limited disk space, limited processing power, and batteries with short life span. In this platform, registered mobile computers may transfer their applications to MaROS server. This process is called "relocation". In this thesis, the design and implementation of the MaROS migration module is presented. The proposed model supports a lightweight migration system initiated by the application. A brief survey on migration systems, design, implementation, and evaluation of entire MaROS system and its migration package are presented in this thesis. In addition, suggestions to enhance the system are presented.
Aggregate production planning by linear programming with an application
Tedarik zinciri yönetimi için grup karar destek sistemleri
ABSTRACT As organizations continously seek to provide their products and services to customers faster and cheaper, managers have come to realize that they can not accomplish it alone; they hence must work on a cooperative basis in Supply Chain Management (SCM). Nowadays, many important decisions in organizations are made not only by a single individual, but also by groups of individuals. Group Decision Support Systems (GDSS) enable organizations to focus on key business activities especially in Supply Chain Management Process. In this process, from the raw material to the end customer there are two flows, which are the material flow and the information flow. These flows must be managed successfully via GDSS in SCM. In every stage of SCM, there is a selection process. Therefore, the firms may handle this selection by effectively using GDSS. In GDSS, there is a multi criteria decision aid. This aid aims to give the decision maker some tools and techniques in order to enable him to advance in solving a decision problem where several points of view must be taken into account. Therefore, Multi Criteria Decision Making (MCDM) methods have received increased attention and become a practical approach for certain types of problems in the real life. This research describes the development of a model for the selection of laptop computers. The purpose of this study is to apply Multiple Attribute Decision Making (MADM) methods to the selection of laptop computers for a firm (which is the procurement stage of SCM) by using GDSS. Our model consists of 279 different types of laptop computers and 86 criteria. The methods used in this study are Analytic Hierarchy Process (AHP), REMBRANDT, ELECTRE, and PROMETHEE. The following steps were carried out while applying the methods to the problem. Firstly, the hierarchy tree was created by decomposing into criteria and sub-criteria.. Secondly, the weigths for the criteria and alternatives were determined. The relevant weights were calculated using pairwise comparisons by GDSS. Finally MCDM methods were applied to this model. Programming language Java was used to implement the considered methods. The results look like similar. Based on this model, the research provides a means whereby companies or organizations can assess the selection of activities, which are critical to their business by using GDSS. Keywords: Group Decision Support Systems (GDSS), Supply Chain Management (SCM) Multi Criteria Decision Making (MCDM), Multiple Attribute Decision Making (MADM), AHP, REMBRANDT, ELECTRE and PROMETHEE Methods
A Mathematical model for planning of class timetables an application in Turkish Military Academy
A timetabling problem of an educational institution involves scheduling a large number of classes, teachers and courses to a number of periods while satisfying a set of constraints of various types. The aim of this study is to find good and satisfactory solutions for the timetabling problem of Turkish Military Academy in shorter time when compared to the manual timetabling process. An integer programming model which has the appropriate facilities for providing valuable help to the scheduler to implement a good timetable of Turkish Military Academy and a solution strategy for this model is presented. The model satisfies the teachers' preferences to a sufficient degree by using suitable objective function coefficients. These coefficients penalize the assignment of teachers to the periods which they do not prefer. They also enable us to assign the part-time teachers at their available periods prior to the full-time ones. In addition, the solution strategy proposed is based on grouping sections and teachers, and on allocating teacher groups to section groups iteratively in such a way that the output data of an iteration will be added to the input data of the next one. This grouping strategy made it possible to decompose the problem into the problems of smaller sizes. The solution found by the implementation of the model in this study satisfies all problem requirements and minimizes the objective function. It is near- optimal within the iteration limits and is found in several hours. The timetable constructed has only one non-preferred period for only one teacher. Besides, the time consumed for this model is very short when compared with the manual timetabling. Thus, it is said to be "a good timetable" both for the teachers and the scheduler. IX
Bir kültür kurumu olarak sinematekler
Günümüzde kar amacı gütmeyen sinematekler, ülkelerin kültürel ve sanatsal hayatında giderek artan bir öneme sahiptirler. Bir Sinematek başta film malzemesi olmak üzere görsel-işitsel mirası korumayı, saklamayı, bugün ve gelecekte erişime açmayı ve diğer faaliyetlerle film kültürünü geliştirmeyi amaçlar. Bu tez çalışması, öncelikle sinematek kurumunun ortaya çıkışını ve gelişimini, sinemateklerin yapısını, amacını ve çalışma alanlarını içermektedir. Bu çerçevede, dünyanın önemli sinemateklerinden British Film Institute (İngiltere), ScreenSound Australia (Avustralya) ve Pacific Cinematheque (Kanada), örnek alınarak yapıları, faaliyetleri, mal, durumları incelenmiştir. Türkiye'de sinemanın gelişimi ve sinematek çalışmaları da ele alınarak bir karşılaştırma olanağı sunulmuştur. Başlangıçta yalnızca arşiv ve gösteri amaçlı ortaya çıkan sinematekler, geçirdiği süreç sonunda modern anlamda gösteri, eğitim, araştırma ve yayın faaliyetlerini de içermektedir. Sinematekler artık, filmin yanında video ve televizyonu da kapsayan daha geniş bir medya üzerinde çalışmaktadır. Türkiye'de bireysel girişimlerle yürütülen sinematek kurma ve sürdürme çabaları sürekli kesintiye uğramıştır. Gelişmiş ülkelerdeki sinemateklere eş düzeyde sinematek ya da sinemateklere ihtiyaç vardır. Bu çeşit bir yapılanma, film kültürünü, bilimsel çalışmaları ve sinema sektörünü canlandırmada anahtar bir rol oynayacaktır.
Kredi riski ve risk yönetimi
The financial risk has increasing impact on the financial institutions over the past two decades. It's developed and implemented a lot of sophisticated models during this period. These models have gained popularity not only among bank managers, but also in amendments to the international bank regulatory framework. One of the most popular source of the financial risk is the credit or default risk. Many developments related with the credit risk are taken place including developments of statistical models, changes of regulatory issues, increasing of data sources. In the light of these developments, it is important to understand how to control the credit risk so as to gain the competitive advantage and try to minimize the loss due to credit/default risk. The objective of this thesis is the presenting the ways of how to control and mitigate the credit risk and bring out the latest improvements of the regulatory or legal issues. Risk and especially credit risk is explained briefly in the introduction of this thesis, the financial risks are explained in the second part, and following the second part, it's explained credit risk, credit risk models and VaR. Finally, in the fourth part detailed information about the credit risk ratings and its impacts on the credit risk management models have been given. Key Words :Risk, Financial Risks, Credit/Default Risk, Risk Rating.