Matematik ve Bilgisayar Bölümü Tezleri

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

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A genuine origin and language for the universal principles of architecture
(2015) Acar, Aktan
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.
A robust key management scheme for hierarchical wireless sensor networks
(2015) Al-Salihi, Aso Ahmed Majeed
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.
A Web-Based system to enhance students’ abilities in English education
(2015) Kother, Safaa Hadi
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.
(alpha-psi) Type contractive mappings and related fixed point theorems
(2016) Ürgüp, Edanur
This thesis consists of three sections. The first section is reserved for introduction, some basic definitions and declaration of literature about alpha-psi type contractive mappings and related fixed point theorems have been presented. The second section deals with the main results. We have applied definition of alpha-admissible for two different functions of f and T. Furthermore, we have investigated their results. Finally, the third section includes discussion and conclusion.
An efficient energy scheme for hybrid clustering wireless sensor networks
(2015) Saleem, Ahmed M.
Kablosuz algılayıcı ağlarda kümeleme, enerji optimizasyonu için birçok uygulamalarda kullanılmakta olan önemli yöntemlerden biridir. Ağlarda birçok düğüm olduğundan, kümeleme yöntemleri ile uyarlanabilir enerji tüketimini sağlamak amaçlanmaktadır. LEACH rastgele kümelenme metoduna dayanan en popüler kümeleme algoritmalarından biridir. Bu algoritmada küme başı ve küme üyeleri olmak üzere iki farklı düğüm tipi bulunmaktadır. Ġletişim bu küme başları ile sağlanır. Bu nedenle LEACH algoritması, dinamik kümeleme ve uyarlanabilir enerji tüketimi sağlayarak ana amacına ulaşır. Bu tezde yeni bir melez kümeleme algoritması ağ alanında tanıtılmış, analiz edilmiş ve uygulanmıştır. Önerilen yöntemin enerji performansı LEACH (Düşük Enerji Uyarlanabilir Kümelenme Hiyerarşi) ve SEP (Stabil Seçim Protokolü) ile karşılaştırılmıştır. Farklı kısıtlamaları ve yöntemleri ile küme baş seçimi enerji tüketimi konusunda daha iyi sonuçlar ortaya çıkartır
Basin's fractal via complex newton's method
(2015) Murad, Zainab
In this thesis, we show that when we applied the Newton's method on the exponential function,f(z)=p(z)eQ(z) where p(z) and Q(z) are polynomials in the complex plane, the attraction basins of roots have finite area when n . With the help of MATLAB we obtained nice fractals in order to prove the finite basins area when n and infinite basins area when n<2
Combined jpeg with dwt for image compression
(2012) Nabeel Dara, Omar
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.
Design and implement of database student information management system in College of Medicine – University of Diyala
(2014) Almehmes, Ihsan Ali Hassan
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.
Design and manage website for College of Administration and Economics Diyala University
(2015) Layth Talal, Mohammed
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.
Discrete mittag–leffler functions in fractional calculus
(2011) Benli, Betül
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.
Fault tolerant overlay networks design
(2015) Aziz Al-Agele, Raad Sadi
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.
Fractional derivatives with mittag-leffler kernel and their applications
(2018) Can, Halil Sezgin
Bu tez çalışmasında Mittag-Leffler çekirdeği kullanılarak yeni bir kesirli türevin özellikleri üzerinde durulmakta ve bunun ayrık versiyonu sunulmaktadır. Bunun ardından mühendislik alanlarından gerçek dünya olgularıyla eşleştirecek şekilde bu yeni kesirli operatörlerin bazı uygulamaları gösterilmektedir. Bu uygulamalarda, mevcut kesirli türevlerin sonuçları ele alınan yeni kesirli türevin performansını vurgulamak için korunmuştur.
Fredholm type integral equations
(2015) Al Retha, Ahmed
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.
Hospital information system
(2012) Ramadhan, Fatimah
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.
Investigation in MYSQL database and NEO4J database
(2015) Al-Ani, Zahraa Mustafa Abdulrahman
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.
Investigation of amazon and google for fault tolerance strategies in cloud computing services
(2015) Al-Raheym, Shereen
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.
Iterative solution of sparse linear systems
(2013) Abosharb, Laila
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.
Legacy applications migration on to cloud
(2015) Al-Mahdawi, Hassan K. Ibrahim
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.
Liver volume computation from computed tomography (CT) images
(2016) Salihi, Sara Osam
Son zamanlarda, bilgisayarlı tomografi görüntüleri karaciğer hastalığı teşhis yanı sıra, onlar tedavi hacmini ölçmek ve karaciğer taşınmaya kullanılır için açıkça kullanılmıştır. Karaciğer ve kısmi hacim etkilerinin özellikleri yüzey yakındaki diğer organlardan karaciğerin otomatik muhakeme çok karmaşık bir işlem yapar, çünkü genel olarak, karaciğer kılavuzuna veya teknikleri segmentlere bilgisayarlı tomografi kullanılarak medikal görüntülerin göre segmentlere ayrılır. Sonuç olarak, bu tezde biz bilgisayarlı tomografi görüntüleri ile karaciğer boyutunu ölçmek amacıyla karaciğer için bir yarı-otomatik tekniği önerecektir. Böylece, faiz sipariş segmentine alanında, biz büyüyen bölgenin tekniklere ek olarak kenar dayalı karaciğer segmentlere sürecine odaklanmak zorunda. Son olarak, karaciğer boyutu ve alan araştırma ölçümleri radyografik doktor için manuel izleme yöntemleri için bu kullanımı ile ilgili olan ve bu algoritma boyutu ve karaciğer yarı otomatik bölümleme ölçmek için etkili bir algoritma olduğunu göstermektedir.
New trends in fractional optimal control problems
(2018) Madi, Gadriah Jamaah Ali
Bu tez çalışmasında, bazı kesirli türevlerin (örn. Riemann-Liouville, Caputo ) temelleri Gru ̈nwald–Letnikov tanımlarına dayanan ilgili yaklaşığıyla beraber çalışılmıştır. Daha sonra, kesirli optimal kontrol probleminin temelleri, formulasyon da verilen kısıtlamaların ve optimalite koşullarının tanımlanmasında kullanılan bu kesirli türevler aracılığıyla sunulmaktadır. Göz önüne alınan kesirli türevlerin yaklaşığı için yeni orthogonal polinomların integrasyonu anlamında kesirli optimal kontrol problemlerinin sayısal çözümleri için bazı yeni yönelimler üzerinde çalışılmıştır. Bu bağlamda, Bernstein polinomları, kaydırılmış Chebyshev polinomları ve kaydırılmış Legendre ortonormal polinomları Legendre-Gauss kareleme yöntemin içerisinde kesirli optimal kontrol probleminin formülasyonundan gelen Caputo tabanlı kesirli kısmi diferansiyel denklemleri sayısal olarak çözmek için kullanılmaktadır.Verilen control fonksiyonlarına dayanan iki dinamik sistem, açıklayıcı örnekler olarak ele alınmış ve sistemlerin ilişkili gelen karşılığı, kesirli türevler altında sunulmuş, daha sonra klasik türev ile karşılaştırılmıştır. Sayısal sonuçlardan ve verilen simülasyonlardan system cevabının, kesirli türevin derecesi azaldıkça t değişkeninin bazı noktalarında arttığı gözlemlenmiştir.

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Browsing Matematik ve Bilgisayar Bölümü Tezleri by Department "Çankaya Üniversitesi, Fen Bilimleri Enstitüsü, Matematik ve Bilgisayar Bölümü"