Enstitüler - Tezler

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3D graphics engine design
(2004) Bal, Muammer
This thesis presents a 3D Graphics Engine design which includes geometrical methods, graphics pipeline, collision detection, animation of characters, geometric level of detail, terrain, and special effect parts. The quality and also the speed of the designed 3D Graphic Engine is very important. Because of this all methods that are used in designed 3D Graphic Engine are selected as to reach high quality and speed. Application of the designed 3D Graphic Engine shows that the Engine supports high quality and speed
A Comparative socio-cultural and environmental study on traditional interior courtyard houses of Tripoli and Antakya
(2003) Sharif, Salem
his research focuses on traditional interior courtyard houses as one of the fundamental topologies of housing. It is an attempt to investigate the socio-cultural and environmental factors that are assumed to have an important role in shaping and configuring the interior courtyard house. The interior courtyard house has been investigated in detail within this socio-cultural framework starting from the theoretical literature and field studies. Consequently case-studies in both Tripoli (Libya) and Antakya (Turkey) are selected to examine the several concluded principles that have been driven from the theoretical reviews and applied in fieldwork. Comparing the results of both studies in interior courtyards in Tripoli and Antakya exposes differences in interior courtyard configurations due to socio-cultural context as well as environmental aspects. Interior courtyards are integral parts in creating house identity and core construction for spatial relations among other spaces of the dwelling units. While this study reveals several interesting results about effects of socio-cultural and environmental factors in the interior courtyards, it primarily discusses different methods for analyzing the interior courtyard from different perspectives. The literature review exposes several aspects concerning the interior courtyard configurations in the houses. While most researchers focus only on one specific functional or climatic topic, this thesis includes important elements from both socio- mcultural and environmental aspects; as one of the ultimate goals of this study is to produce individual identities through creative design principles for interior courtyard houses for the designers.
A Comparative socio-cultural and environmental study on traditional interior courtyard houses of Tripoli and Antakya
(2003) Sharif, Salem
Bu araştırma konutların temel değişmez özelliklerinden (topolojilerinden) biri olarak, geleneksel iç avlulu evler üzerinde durmaktadır. Bu çalışma, iç avlulu evlerin şekillendirilmesinde ve guruplaştınlmasmda sosyo-kültürel ve çevresel faktörleri araştırmanın önemli bir rolü olduğunu gösterme çabasıdır. İç avlulu evler sosyo kültürel çerçevede, kuramsal kaynaklar ile alan çalışmalarından başlayarak ayrıntıları ile incelenmiştir. Daha sonra da Libya Tripoli ile Türkiye Antakya'da örnek durum çalışmaları, kuramsal gözlemleri ve saha çalışmalarındaki uygulamalardan çıkan sonuç ilkeleri incelemek üzere seçilmişlerdir. Tripoli ile Antakya' daki iç avlularla ilgili bulguların karşılaştırılması sonucunda sosyo-kültürel ve çevresel koşulların şekillendirme ferkhhklarmın oluşmasında önemli rolleri olduğu gözlenmiştir. İç avluların, konutların diğer mekanları arasında ev kimliğini yaratmada ve çekirdek sağlamakta ayrılmaz bir bölüm oluşturdukları açıktır. Bu çalışma, sosyo-kültürel ve çevresel faktörlerin iç avlulardaki etkinüğini farklı bakış açıları ile ortaya koyarken beraberinde farklı analiz yöntemlerini de getirmektedir. Şimdiye kadar yapılmış çalışmalarda çok sınırlı olarak ele alınan kaynakların tekrar gözden geçirilmesi sonucunda, konutların iç avlularının şekillenmesinde çok ilginç birçok konunun olduğu ortaya çıkmıştır. Bu çalışmanın ana hedeflerinden birisi de; sosyo-kültürel ve çevresel koşulların yarımda, yaratıcı tasarım becerüerinin katkısıile yeni kimliklerin kazanılmasına ve sonucunda da tasarım kararlarının farklı oluşabilmesine katkı sağlayabilmesidir
A Survey on public-key infrastructures
(2003) Öztürk, Haluk
Public-key cryptography is fast becoming the foundation for online commerce and other applications that require security and authentication in an open network. The widespread use of public-key cryptography requires a public-key infrastructure to publish and manage public-key values. Without a functioning infrastructure, public-key cryptography is only marginally more useful than traditional, secret-key cryptography. This thesis presents a set of characteristics that are common to all public-key infrastructures. These criteria are intended to encapsulate the fundamental issues that arise when dealing with such systems. They can be used both as a "shopping lisf for those who need to choose an infrastructure for a particular application, and as a guide for infrastructure developers, that they may be more aware of any compromises or tradeoffs they might make in their work. The characteristics are used to present a survey of current and some proposed infrastructure systems. The criteria reveal the strengths and weaknesses of each system, and indicate where improvements may be required.
Access telecommunication systems
(2005) Küçükoğlu, Afşin
This thesis studies the differences between xDSL, LMDS, Fiber and FSO. Cable access system XDSL is compared with the optical fiber access communication method. As wireless access communications, LMDS and FSO systems are compared. Finally, a full comparison of all the key points for all the access systems are made. Issues compared cover the state of the art, information rate, communication distance, security, commercial prices, and the system installation costs. The comparison is supported by a software which is running under Unix systems on the internet. In the second part, atmospheric structure and the atmospheric molecular effects on the light waves in different ranges are studied. Temperature, C02 and water molecular effects in the atmosphere and the effects on the intensity are also studied
Accounting software for high inflationary economics
(2002) Bal, Murat
Bu tez mali tablolardan enflasyon aşınmalarını otomatik olarak temizleyecek olan bir enflasyon muhasebesi yazılımının ayrıntılı tasarımını içermektedir. Ülkemizin ihtiyacı olan böyle bir yazılımın, kararlı, sağlam, basit bir şekilde tasarlanması amaçlanmıştır.
Affinity between the fiction writer and the filmmaker: Viewpoint, aesthetics, and cinematographic representation in Sherwood Anderson's and James Joyce's short stories
(2003) Taner, Neşet Erdem
The affinity between fiction and film can be explained by the affinity between fiction writer and the filmmaker. The fiction writer begins with a series of images which he conserves in his mind and which he has obtained from his past experiences. He sets these into motion while creating his fiction. Whenever there is a conflict, there is a story to be told. Filmmaker puts into motion the still images in his mind and he forms his film. From this perspective, it can be put forward that both the fiction writer and the filmmaker are artists who activate the mental photographs in their minds and who create their art through their selective perception. Therefore both the fiction writer and the filmmaker establish the still pictures in their minds from an aesthetic viewpoint and subjectivity to reach at their viewers or readers. American writer Sherwood Anderson and Irish writer James Joyce have reflected still pictures in their Winesbura. Ohio and Dubliners respectively by transforming those pictures into the form of motion pictures from their own Ill viewpoints and aesthetical perspectives. They have worked as if they were filmmakers in transmitting their fiction. To conclude fiction writing and film language have similar language, have similar characteristics, and both are based on the principle of putting into motion a sequence of still pictures relying on an expressionistic and subjective viewpoint and aesthetics.
Algılanan dönüşümcü liderlik ile insan kaynakları yönetimi etkililiği algısı ilişkisi: bilgi ve iletişim teknolojileri çalışanları üzerinde bir araştırma
(Çankaya Üniversitesi, 2018) Köker, Fatma Zehra
Bu çalışmanın amacı algılanan dönüşümcü liderlik ile insan kaynakları yönetimi (İKY) etkililiği algısı ilişkisini incelemektir. Çalışmada algılanan dönüşümcü liderlik ile İKY etkililiği algısı alt boyutları arasındaki ilişkiler yapısal eşitlik modeli (YEM) ile analiz edilmiştir. Araştırmanın örneklemini, bilgi ve iletişim teknolojileri (BİT) sektöründe faaliyet gösteren; 3 büyük ve 10 orta-ölçekli işletmenin çalışanları oluşturmaktadır. Tüm işletmelerin İK birimleri vardır ve sektörün önde gelen temsilcilerindendir. Yöneticileriyle beraber 407 çalışandan elde edilen verilerle görgül analiz yapılmıştır. Analizlerler sonucunda, algılanan dönüşümcü liderlik ile İKY etkililiği algısının birbiriyle pozitif ilişkili olduğu ve bu ilişkilerin tüm alt boyutlarda görüldüğü anlaşılmıştır. Oluşturulan model yardımıyla bulgulardan biri algılanan bireysel ilgi ve destek İKY etkililiği algısını daha fazla etkilemektedir. Diğeri eğitim ve geliştirme uygulamalarının etkililiği algılanan dönüşümcü liderlikten daha fazla etkilenmektedir.
An analysis of the effects of modular furniture on preschool chıldren's group behaviours: A case study in Ankara
(2004) Can, Sıtkı Tankut
This study examines the effects of modular furniture on children's motor developments, group behavior and development. In order to determine preschool children behaviors and developmental criteria, necessary design criteria for preschool age period and kindergartens are investigated. Besides this, modular systems, design of place, psychological and social influences of environment which affect the child are stated. Within this framework focuses on 12 children between 5 and 6 age selected, by using systematic density observation technique.
An intelligent interface for a distributed database system
(2004) Demirol, Mehmet Özgür
In order to implement the subject software suited to a distributed database system management is developed for a real life problem solution. The implementation of the software in a distributed database environment makes it possible to develop the solution more easily. The distributed database is chosen for not to combine the remotely distributed database servers together but to develop software that has local implementation differences yet do the same works. In addition to increase the program performance SQL statement tunings are also implemented where the program logic is not sufficient. At the places that show design differences, different implementation modules developed and deployed and by means of replication these works combined at the center where the eventual transactions over the information collected are performed
An inventory control application by using fuzzy logic
(2004) Öcal, Uğur
The fuzzy logic theory, which has been applied since 1 970 in order to approach to the human mechanism of decision making, is used today in many industrial products. New intermediary values have been added to the "yes" and "no" values in the binary logic theory. In the places where uncertainty exists, the fuzzy logic has made this uncertainty a definition through the grade of membership it uses. m Today most of the companies are using a stock control application. And most of these applications cannot adjust economic reorder point (ERP) in accordance with the demand without human control. In this thesis study, a stock control model has been designed by using fuzzy logic theory in order to overcome this shortcoming. A new order quantity value has been found by interpreting the demand for a product and quantity-on-hand (QOH) variables. In chapter 1, we mentioned the role of fuzzy logic in control engineering and information on the previous studies was given. In chapter 2, we mentioned stock control foundations and in chapter 3 the fuzzy set operations, rule-base and defuzzification were examined. In chapter 4, the stock control model was designed and the conclusion as a result of the execution of the model was given
Analysis of natural language sentences using natural language processing methods
(2005) Bolat, Saadettin
The aim of this study is to develop a Web-based Question Answering System, which primarily focuses on open domain fact-based short answer questions and also some definition questions. The system takes the advantage of Web which contains enormous amount of documents available online and the redundancy (multiple answer occurrences) available in the Web documents. In order to find a correct answer to a question, the first step is to determine the type of answer that the question asks for. The system analyzes and classifies the questions according to the hand-made question analysis templates. These question analysis templates are based on the question words, English grammar and some other keywords in the questions. It first creates possible sentence substrings and then search engine specific queries. To analyze the retrieved search results, the system applies a series of filters to each sentence containing the iii candidate answer and a score is given to each sentence. Among all candidate sentences, top 5 ranked sentences containing the answers are returned as possible answers. The performance of our system has been compared to the AnswerBus question answering system which is an online, publicly accessible system on the Web, and similar to our approach in several aspects. According to the evaluation results, our system appeared better than AnswerBus in terms of accuracy
Appliying neural networks to character recognition
(2005) Shertil, Mahmud Saad
Optical Character Recognition (OCR) is one of the most widely used applications of automatic pattern recognition and it is a very active research field since the 50's. Today there are numerous algorithms that perform this task, each with its own strengths and weaknesses. In this thesis we explore neural networks to find the best topology regarding the number of layers and the number of neurons at each layer by classifying two different datasets using backpropagation networks with two different approaches. We then compare the results between them and show that the obtained optimum set of parameters is valid for both printed letter and the handwritten digits. Moreover the letter dataset consists of sixteen features with 20000 samples and twenty-six classes. Here we see that the number of classes is more than the number of features which affects our results. The second dataset which is handwritten digits consists of sixty-four features with 5620 samples and ten classes. Here we see that the results are better than the first dataset
Artificial intelligence and its application
(2003) Karakoç, İlkay
Artificial Intelligence applications have been started in order to design computer programs that have human abilities. It has been thought that Artificial Intelligence applications will improve programs' abilities in the future. In these applications, the first step should be the determination of the knowledge and the method followed by the selection of the data set, rules and the suitable method. Then the control mechanism must be determined. In this thesis, the definition methods and techniques of Artificial Intelligence are mentioned and the Natural Language Processing, one of the applications of Artificial Intelligence is implied. Also a NLP program is designed to be a source for future works. This program is based on English language grammar rules. It is designed with respect to some determined tenses, because of the wide structure of English language. Prolog programming language and its properties of syncronization, recursion and list applications are used for program. In Chapter 1, the importance of Artificial Intelligence in human life is mentioned. Chapter 2, which mentiones the historical development of Artificial Intelligence is followed by Chapter 3, in which the fundamental characteristics of Prolog programming language is explained. In Chapter 4 data structures, list and tree mechanism are mentioned. In Chapter 5, human language rules are explained and a NLP program is generated.
Artificial intelligence search methods
(2003) Güler, Namık
Here in this master thesis I am planning to explain and introduce artificial intelligence and search methods. You might be heard or read some papers or books about artificial intelligence, but also now you will have chance to refresh your mind and knowledge with this introduction to be familiar with artificial intelligence. Also you will find here artificial intelligence history and some definition of artificial intelligence. One of the main study and area of artificial intelligence is search methods. Actually we came across with search criteria everyday we never think how those methods functions. m Here you will find a few searching methods examples, which we use everyday and it will help us to understand and remember better. Many people now has pc or notebook at home or in the office and computer is widely used in our daily life. If you need to find a file, documents, pictures or music files in your hard disk, if it is not easy to remember exact location or name of the file. After we start running the search program after some time later depends upon the size of domain and also amount of information we have provided, we will have a result. Also if you are using internet, if you need to find out a file, documents, pictures or any kind or information, it is necessary to go to a search machine to and need to run it.
Assembly line balancing in a heavy equipment factory
(2002) Yıldız, Mehmet
Firmalar, toplam maliyetlerini düşürmek ve pazar paylarını arttırmak için, üretim hatlarının tasarımlarını iyileştirmeye gereksinim duyarlar. Talepteki hızlı değişim daha kısa zamanda daha fazla üretim yapma zorunluluğunu getirmektedir. Bu tezde, iş makinaları üretim fabrikasındaki Bachoe - Loader hattı incelenmiştir. Değişik metodlarla elde edilen çözümlerin, performans karakteristikleri ve toplam üretim maliyetleri baz alınarak, mevcut üretim hattı ile karşılaşılmıştır. Elde edilen sonuçlar U-lino yönteminin en iyi çözüm olduğunu göstermiştir. Bu çözüm ile yıllık fabrika giderleri yaklaşık 55.000 $ düşürülürken; toplam artık zaman da %98 oranınında azaltılmıştır. Üretim miktarı ise %42 oranında arttırılmıştir.
Assessment of total quality management efforts: An application in a company
(2002) Eke, Özge
Bu tezin amacı, toplam kalite yönetimi çabalarının çalışanların davranışları üzerindeki etkilerini incelemektir. Bir meşrubat pazarlama şirketinde girdi olarak toplam kalite yönetimi ilkeleri ile iş ile bağıntılı sonuçlar arasındaki ilişkiler incelenmiştir. Bu çalışmada, birbirinden bağımsız ölçütlerin geliştirildiği kanıtlanmıştır. Bu şirkette 35 çalışanı kapsayan araştırma sonuçlan, beklenildiği gibi, sürekli iyileştirme, takım çalışması, personel odaklılık ve işle ilgili çıktılar arasında önemli istatistiksel bağıntılar olduğunu göstermiştir. Yapılan çalışmalara göre bu ilişkilerden en önemlisi takım çalışması ile iş tatmini arasında görülmüştür
Avukatın borca veya yüküme aykırı davranıştan sorumluluğu
(Çankaya Üniversitesi, 2018) Bozkurt, Buket
Çalışmamızda yargının bir parçası olan avukatın, taraflar arasındaki avukatlık sözleşmesine dayanarak sunmuş olduğu hizmetin niteliklerine, avukatlık sözleşmesi ve vekâlet sözleşmesi arasındaki farklara, yapılan hizmet neticesinde kendisine yüklenen borç ve yükümlere değinilmiştir. Bahsedilen borç ve yükümlere aykırılığın sonucunda gündeme gelen müspet zarar ve varsa eğer manevi zarar üzerinde durulmuştur.
Closed environment simulation tools for computer graphics
(2004) Rapaka, Manoj
Solid objects in the real world do not pass through each other when they collide. Enforcing this property of "solidnesf' is important in many interactive graphics applications and using solidness makes the virtual environment feel much more real and believable. This thesis performs a comparison of collision detection algorithms for 3D objects. The thesis is divided into chapters. Ill The first chapter - Introduction shortly explains the problem of collision detection, why collision detection algorithms are needed and different approaches to tackle it in short The second chapter helps by providing some background knowledge of some methods. The methods include Appropriate Bounding Boxes, Bounding Box Overlap Testing Etc. The third chapter gets into some detail with some algorithms based on bounding volumes while the fourth and fifth chapters providing a fair detail of the algorithms based on the closest pair of points and features based algorithms respectively. All the algorithms dealt with in the different chapters in the thesis leads us to the sixth chapter entitled Advantages & Disadvantages where we provide a comparison of the algorithms with different aspects taken into consideration
Comparative study of human face identification methods
(2005) Karaömeroğlu, Betül
Face recognition algorithms have gained popularity in the recent years. Nowa days there are a lot of face recognition systems. However, it is known that these systems work properly in ideal environments. Behind of that, these applications provide low performance in some situations such as illumination, occlusion, different facial expression or presence of rotation and tilt conditions. In this thesis, a new approach to face recognition problem has been proposed. The presented system is a specialized version of PCA augmented with Gabor Wavelet Transform. Firstly, 2D Gabor Wavelet Transform is applied to cope with the variations due to illumination and facial expression changes; then the modified PCA approach is used for reducing a large set of correlated variables iii to a small number of uncorrelated components. The performance of the proposed algorithm is compared with the other algo rithms based on the effect of the illumination, facial expression and occluding objects such as eye glasses and facial hair

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