Matematik ve Bilgisayar Bölümü Tezleri

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/222

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Citation Count: ACAR, A. (2015). A genuine origin and language for the universal principles of architecture. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
A genuine origin and language for the universal principles of architecture
(2015-08) Acar, Aktan; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
Today, architectural theories are replaced by instant discoursive positions, which are mainly overwhelmed by a crisis of meaning and legitimacy. The examination of the history of architectural theories showed that those instant positions are based on the architectural theories of the 18th century. The reverse-chronological investigation of the theories of the 18th century has revealed the emancipation of architecture from its metaphysic knowledge, which distanced the theory from its origins dissociatively, in the 17th century as the reason that crisis. That knowledge was defining the particulars of architectural theory, such as origin, meaning, character, taste, and form from antiquity to the late 17th century. The research showed that those particulars constitute the universals of architecture. Their genuine origin and language defining them were structured by Vitruvius in the 1st century BC on the basis of six essential concepts: order, arrangement, symmetry, eurhythmy, propriety and economy. Those concepts have been revisited and redefined in order to reflect upon the domain itself by means of its own terminology, rather than imported concepts. This reflection, considered as a further study, would proceed towards solid and valid architectural theories corresponding the crisis of meaning and legitimacy.
Citation Count: AL-SALIHI, A.A.M. (2015). A robust key management scheme for hierarchical wireless sensor networks. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
A robust key management scheme for hierarchical wireless sensor networks
(2015-05) Al-Salihi, Aso Ahmed Majeed; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
Wireless Sensor Networks (WSNs) are used in many applications such as monitoring, target tracking and military applications, etc. A network is comprised of a large number of small, cheap, computational, limited energy devices which are called sensor nodes. These nodes are randomly deployed in open area to gather information. They communicate with each other via wireless media which are, however, vulnerable to being attacked by malicious nodes that may impersonate legitimate nodes. This makes the whole network liable to being hacked. Thus, security for WSNs is needed to keep any gathered data safe and to protect the communication links between sensor nodes. Key management plays a critical role in achieving security in a WSN. In this thesis, a robust key management scheme for hierarchical WSNs depends on, and exploits, the advantage of symmetric and asymmetric key cryptography. The proposed scheme uses the SHA-1 in HMAC not unlike a symmetric key for cluster formation and encryption of the private key via ECC, such as asymmetric key cryptography. Ultimately, the proposed scheme should be used to solve all these problems mentioned above.
Citation Count: KOTHER, S.H. (2015). A Web-Based system to enhance students’ abilities in English education. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
A Web-Based system to enhance students’ abilities in English education
(2015-06) Kother, Safaa Hadi; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
The research deals with enhancing the students' abilities to learn English language. The enhancement will be in the form of web-based computer system hosted in the root establishment of education that the students can access using their own computers at homes or school computers. The proposed system will use the computer digital media like movies, dictionaries, and speech facilities to simplify the reading, writing, listening, speaking and the vocabulary of the English language. The system is instructors' assistance system uses all attractive facilities to be students' favorite and beloved system and portable to give students the longest period of education with ability to share knowledge between them. It is an integrated multimedia system the override students motivations to enhance education facilities. The system will be implemented using the Microsoft Visual Studio development tool with aid of Visual C#.net integrated with Asp.Net tools to build the website according to the latest technologies in web-based application development. The designed system deals with analysis of the benefits of using it and questioners to show its intended application results and its abilities to reduce education costs and increase education effectiveness.
Citation Count: NABEEL DARA, O. (2012). Combined jpeg with dwt for image compression. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Combined jpeg with dwt for image compression
(2012-09) Nabeel Dara, Omar; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
The main idea for this research is apply JPEG technique with enhanced quantization, on Discrete Wavelet Transformation (DWT). The DWT minimize the size of the image into convert the image into LL, HL, LH and HH sub-bands. The LL sub-band represents approximately original image, and then applied JPEG technique on the LL sub-band, then applied quantization to increase number of zeros. Finally apply Sequential Search Coding on the JPEG matrix for coding. The Sequential Search Coding work to convert group of data into single floating point value by using Key.
Citation Count: ALMEHMES, I.A.H. (2014). Design and implement of database student information management system in College of Medicine – University of Diyala. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Design and implement of database student information management system in College of Medicine – University of Diyala
(2014-06) Almehmes, Ihsan Ali Hassan; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
There were a number of problems associated with adopted manual methods to manage student information in the Department of Student Affairs in the College of Medicine – University of Diyala, these followed regulations caused delay in the delivery of services to students, inaccuracies in the completion of tasks and so on. A new system designed and implemented by using the tools of Microsoft Visual Studio 2010 (.Net Framework Environment) and Microsoft SQL Server 2008 R2 to solve most of the problems and obstacles resulting from the use of the old methods and techniques. The main work of the software design process included requirementsanalysis, database description and logical structure design of the data. Database System test results show that the database system meets the requirements of each module with a graphical user interface and simple procedures. Student data can be updated by the administrator of the system efficiently, accurately in a short time and in a flexible manner. Finally concluded that adopted this new database student information management system helps to accomplish the tasks at high speed and accuracy, also helps the management of the college in speed of decision-making, which helps raise the level of performance of the college in general.
Citation Count: LAYTH TALAL, M. (2015). Design and manage website for College of Administration and Economics Diyala University. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Design and manage website for College of Administration and Economics Diyala University
(2015-03) Layth Talal, Mohammed; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
With the fast development of information technology, websites have come to represent the main entrance for access to most institutions through fast communications and responses to various requests. Electronic communication achieved an actual scale to measure the efficiency of an institute especially with regard to the exchange of information and electronic services. In this study, the main purpose is to design and manage the new website of the College of Administration and Economics – Diyala University by using ASP.Net 2010 and processing the existing problems on the old website of the college, such as the traditional design and management of the website contents as well as website usability and quality of services and activities that are available to students and staff. The website has been designed to diagnose and address the problems mentioned above. The tools are based on designing and managing the website by using Microsoft Visual Studio 2010, and ASP.Net, which includes the C# language. Moreover, the Microsoft Access 2010 was also used to build the database of some pages. Therefore, the objective of this work, which is to develop the website, has been accomplished properly. Finally, the administrator is provided with all necessary tools to manage website contents easily in addition to improvements in the usability of the website through navigation and accessing information easily and more flexibly.
Citation Count: BENLİ, B. (2011). Discrete mittag–leffler functions in fractional calculus. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Discrete mittag–leffler functions in fractional calculus
(2011-07) Benli, Betül; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
A speci c type of Caputo q{fractional di erential equations has been solved. The solutions have been expressed via the generalized q- Mittag Le er functions which were comprised a while ago. The method of successive approximation has been used to reach the solutions. Mittag-Le er function makes q-analog, which was proposed by Kilbas and Saigo before, generalized. In addition to this, discrete Mittag-Le er functions and q-analog Mittag- Le er functions, concluded by T. Abdeljawad and D.Baleanu recently, have been discussed in the content of this thesis. Keywords: Fractional Sums, Fractional Di erences, Mittag{Le er Function, Q{Mittag-Le er Function, Discrete Mittag{Le er Function, Caputo Q{Fractional Integral, Caputo Q{Fractional Derivatives, Time Scale, Euler Lagrange Equation.
Citation Count: AZİZ AL-AGELE, R.S. (2015). Fault tolerant overlay networks design. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Fault tolerant overlay networks design
(2015-07) Aziz Al-Agele, Raad Sadi; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
In this thesis designs a reliable and scalable overlay network with fault-tolerance incorporation to support topic-based publish/subscribe communication. For scalability and efficiency, it is important to keep the degree of the nodes in the publish/subscribe system low. We proposes a new optimization problem named Fault-Tolerant Overlay Networks Design, where the trade-offs among several key dimensions such as fault tolerance, scalability, performance, and message dissemination are captured by it. The Fault-Tolerant Overlay Networks design problem is: given a set of nodes and their topic subscriptions connect the nodes to create a topic 2-connected overlay for pub/sub systems with minimum maximum degree, i.e., for each topic the sub-overlay induced by nodes interested in the topic is 2- connected. It presents an algorithm, namely GM3 for this problem which guarantees that the overlay network will be topic 2-connected and which aims at keeping the maximum node degree low. Experimental results show that GM3 algorithm is able to achieve low maximum node degree of publish/subscribe overlay systems.
Citation Count: AL RETHA, A. (2015). Fredholm type integral equations. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Fredholm type integral equations
(2015-04) Al Retha, Ahmed; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
The aim of this thesis is to provide a comprehensive study on Fredholm Integral Equations and the methods to find exact solutions. We also seek to present some effective methods to find the exact solutions for linear and nonlinear Fredholm Integral Equations. Moreover, in order to study the convergence between the numerical solution and the exact solution, we applied the Newton-Kantorovich method as a model to find a numerical solution for a special type of Fredholm Integral Equation and compared the results with the exact solution. The results showed the accuracy of the numerical result and proximity of the exact results, thereby proving the effectiveness and simplicity of the Newton-Kantorovich method.
Citation Count: RAMADHAN, F. (2012). Hospital information system. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Hospital information system
(2012-07) Ramadhan, Fatimah; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
This thesis investigates hospital information system. The traditional systems were found to be completely manual and subject to numerous problems like duplication, loss of records, huge storage space and time consuming. A through study on the modern computerized hospital information systems is made and their main features discussed. A sample system is developed using design tools like ERDs, Microsoft access2007, and Microsoft visual basic 6.0. This system is convenient, makes it easy to share information and it is user friendly. The benefits of the computerization of health records management system is therefore emphasized in all hospitals.
Citation Count: AL-ANI, Z.M.A. (2015). Investigation in MYSQL database and NEO4J database. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Investigation in MYSQL database and NEO4J database
(2015-06) Al-Ani, Zahraa Mustafa Abdulrahman; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
Currently, there are two major of database management systems which are used to deal with data, the first one called Relational Database Management System (RDBMS) which is the traditional relational databases, it deals with structured data and have been popular since decades from 1970, while the second one called Not only Structure Query Language databases (NoSQL), they have been dealing with semi-structured and unstructured data; the NoSQL term was introduced for the first time in 1998 by Carlo Strozzi and Eric Evans reintroduced the term NoSQL in early 2009, and now the NoSQL types are gaining their popularity with the development of the internet and the social media. NoSQL are intending to override the cons of RDBMS, such as fixed schemas, JOIN operations and handling the scalability problems. With the appearance of Big Data, there was clearly a need for more flexible databases. In this study, a theoretical study of investigating in two types of databases MySQL one of the traditional relational databases, and Neo4j one of the graph databases. First of all, choosing these two types of the databases according to their features,both of them depending on the replication and sharding in their systems. Secondly, a brief background with literature review will introduce the opinions for some researchers with some concepts. Thirdly, mentioning relational database and NoSQL in generally and MySQL and Neo4j in specifically, then try to make a comparison between the features for both of them. Moreover, all the websites, the researches, and the journals are the resources for this study. In addition, this study is like mentioned before is a theoretical study so there was no implementation work. However, the comparison presented the result in this study. All in all, we try to provide an understanding for MySQL and Neo4j, that leads us to find both of MySQL and Neo4j have their features, pros and cons that differ from each other.
Citation Count: AL-RAHEYM, S. (2015). Investigation of amazon and google for fault tolerance strategies in cloud computing services. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Investigation of amazon and google for fault tolerance strategies in cloud computing services
(2015-01) Al-Raheym, Shereen; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
Cloud computing has recently become an attractive topic due to its ability to offer information technology solutions through virtual machines as on-demand services to share and consume resources over the Internet. As a result of rapid development in such services, the necessity of fault tolerance in the cloud is a major concern with reliability, availability and dependability is more critical to this new service type. This thesis investigates techniques and means of tolerating cloud services as well as cloud customers’ systems/enterprises execution over the cloud safe from failures. As one of this findings shows, failures in cloud enabled services should be expected to occur hence they should be handled. The essential features of implementing fault tolerance strategies guarantee the business continuity, avoid financial lost, recovering systems from failures, and provide disaster recovery as well. The specific focus is to explore scenarios of avoiding/recovering from failures through redundancy, checkpoint and replication. Commercial IaaS providers such as Amazon’s AWS and Google’s GCE are taken as examples as they tolerate their infrastructure from failures; in this way a robust architecture with fault tolerance property could be proposed for a system/enterprise. Hence, a general conceptual model with fault tolerance considerations has been proposed. With this basis, addressing potential failures in detail, implementing fault tolerance techniques, organizing teamwork to setup business policies are left for future work. Such limitations can be addressed through online questionnaires to collect information for case studies.
Citation Count: ABOSHARB, L. (2013). Iterative solution of sparse linear systems. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Iterative solution of sparse linear systems
(2013-01) Abosharb, Laila; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
Linear systems of equations are encountered frequently in many problems in science and engineering. In large systems representing complicated problems, it is vital to make use of the sparsity of the problem. In such systems, using iterative methods rather than direct methods may decrease the time necessary for solutions. This theses is a survey of techniques used to obtain the solution of large sparse linear systems with emphasis on preconditioning. Mainly, we compare the number of arithmetic operations necessary to solve sparse linear systems using Gaussian elimination before and after reordering the coe cient matrix by Cuthill-McKee algorithm to reduce bandwidth.
Citation Count: AL-MAHDAWI, H.K.I. (2015). Legacy applications migration on to cloud. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Legacy applications migration on to cloud
(2015-12) Al-Mahdawi, Hassan K. Ibrahim; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
Cloud computing is defined as a type of computing that depends on sharing computing resources rather than using local computer resources. What makes this technology different than traditional client-server architecture is that the resources are shared through virtualized machines. This technology is becoming popular as a number advantages such as high scalability and reduced IT costs attract potential users. On the other hand, some challenges, such as legacy applications to be moved to cloud computing environment, are to be discussed. In this work, possible stages to manage and undertake such a migration are attempted to be explored and described. The stages are proposed not only to describe the necessary steps but also to itemize related constraints for each level of migration. Main limitations include plans for migration hence a comprehensive/complete work-flow targeting organization specific requirements such as financial, cultural and legislative parameters remains as a future research avenue. Nevertheless, main benefit of this work is to assist organizations who need to migrate legacy applications onto cloud environment is supported as the work-flow is argued be used as a base to determine the constraints/issues that may arise at the stages.
Citation Count: GAMBO, Y.Y. (2014). On caputo modification of the hadamard fractional derivatives. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
On caputo modification of the hadamard fractional derivatives
(2014-01) Gambo, Yusuf Ya’u; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
In this thesis, more properties of the Caputo modification of the Hadamard fractional derivatives are studied. The fundamental theorem of fractional calculus (FTFC) in the Caputo-Hadamard setting is presented. The theorem is then used in formulating several original results.
Citation Count: HAMMOOD, H. (2015). On discrete fractional calculus with applications. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
On discrete fractional calculus with applications
(2015-04) Hammood, Hayder; Çankaya Üniversitesi Fen bilimleri Enstitüsü Matematik ve Bilgisayar Bölümü
In this thesis, we present the discrete fractional calculus in the frame of the Delta difference operator and discuss the most important properties and theorems. In order to solve delta fractional difference initial value problems, we discuss the Laplace transform related to this calculus and give the main formulas that are needed to solve such problems. The discrete fractional calculus in the frame of the Nabla difference operators and the related Laplace transforms are discussed and some Nabla fractional difference initial value problems are solved as well.
Citation Count: GATEA, K. (2014). On generating functions. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
On generating functions
(2014-11) Gatea, Khulood; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
The Generating Functions play very important role in many areas of Mathematics for they lead as to explore the properties of functions that they generate. In this thesis, definitions of generating functions and their kinds and properties are presented. Their relations to some special functions are discussed. Moreover, and applications of generating functions in several areas of Mathematics are discussed.
Citation Count: AL-HUSSEINI, S. (2015). On performance evaluation of black hole attack in ad-hoc on demand distance vector routing protocol using network simulator 2. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
On performance evaluation of black hole attack in ad-hoc on demand distance vector routing protocol using network simulator 2
(2015-04) Al-Husseini, Saif; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
A Wireless ad-hoc network is a network that consists of wireless nodes like (Mobile, Laptop…) moving random in the area that have no network infrastructure. The nodes communicate with each other; they work together by forwarding data packets to other nodes in the network. Thus the nodes need a routing protocol to find a path to destination node. Nevertheless, due to safety vulnerabilities of the routing protocols, wireless ad-hoc networks are open to attack of the malicious nodes. Black Hole is one of these attacks, which Attack against network integrity engrossing all data packets in the network. Where the data packets are do not reach the destination node on account of this attack, data loss will occur. So to solve this problem of detection and defense mechanisms to remove the intruder that carries out the black hole attack. In this research, we will simulate the black hole attack in wireless ad-hoc network for different scenarios. And then we will propose a detection system for Black Hole.
Citation Count: ÖZYÜREK, M. (2015). On some applications of local fractional calculus. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
On some applications of local fractional calculus
(2015-07) Özyürek, Metin; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
In this thesis, some basic definitions and theorems for the local fractional calculus are given. Based on these definitions and theorems, the applications are presented within the local fractional calculus. It is shown that the applications of the local fractional calculus give very good results on the solution of physical and mathematical equations.
Citation Count: ALJUMAILI, A. (2015). Orthogonality of sturm-liouville problems and some asymptotic behaviours. Yayımlanmamış yüksek lisans tezi. Ankara: Çankaya Üniversitesi Fen Bilimleri Enstitüsü
Orthogonality of sturm-liouville problems and some asymptotic behaviours
(2015-01) Aljumaili, Ahmed; Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü
In this thesis, we discussed some important aspects of Sturm-Liouville theory such as orthogonality, Fourier series and asymptotic formulas for eigenvalues and eigenfunctions. After giving an introduction about the history of Sturm-Liouville Theory. We gave the way to convert any problem into regular Sturm-Liouville problem by finding suitable weight function. We included a method of finding asymptotic formulas for eigenvalues and eigenfunctions of Sturm-Liouville Problems. We also obtain an important formula about the solutions of a specific SLproblem and obtain formulas of eigenvalues and eigenfunctions of this problem.

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