Matematik ve Bilgisayar Bölümü Tezleri

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

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Orthogonality of sturm-liouville problems and some asymptotic behaviours
(2015) Aljumaili, Ahmed
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.
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.
On generating functions
(2014) Gatea, Khulood
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.
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.
The role of information systems in application of human resources management system in presidency of Diyala University
(2015) Alazzawi, Ahmed Adnan Mohammed
Human Resources Management Systems (HRMS) plays an important role for any organisation to effectively manage its human resources. In university domain, HRMS is particularly crucial as the organisation comprises a large number of personnel and administrative units.In Iraq, some universities are still using the manual administration in management of human resources which has disadvantages including: spending a large amount of papers, stores need for archive save and using paper records for save institution data as well. The main purpose of this study is designing an electronic system to managehuman resources in presidency of Diyala University. A HRMS at an abstract level has been designed to address the problems of traditional management. Methodology of the study is based on building database by using (Microsoft SQL Server 2008) and designing interfaces for database by using (Microsoft Visual Studio 2010). The finding of this study is the application enables to presidency of Diyala university facilitate administrative procedures in HRM through collecting the employees information in one place is database and conducting different processesn it such as, insert, update, delete and print according to the need of the end user, hence saving of time in the search process and reducing administrative effort. It is also used to recover damaged data and information and converting the traditional management to an electronic one. In addition, university support in speed of decision making.
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.
Numerical solutions of non-linear volterra integral equations of the second kind
(2015) Saleh, Merewan
Bu tezde lineer-olmayan ikinci çeşit Volterra integral denklemlerinin nümerik integrasyon (Ikizkenar kuralı and Simpson kuralı), Runge-Kutta metodu (klasik üçüncü-derece, optimal üçüncü-derece, Bu methotlar varlığı ve diferensiyel denklemler ile integral problemlerinin çözülmesinde kolaylıkla kullanılmakta olduğu bilinmektedir, ancak özellikle lineer-olmayan integral denklemlere uygulamasında çeşitli zorluklar ortaya çıkmaktadır, çünkü lineer olmayan terimler integralin çekirdeğinde mevcuttur. Bu nedenle söz konusu methotların ve teknikler üzerinde, lineer-olmayan integral denklemlere de uygulanabilecek biçimde, bazı düzenlemeler yapılma ihtiyacı olduğu görülmüştür.
Volterra type integral equations
(2015) Altameemi, Ali
It is truism that, Volterra integral equations have many applications in various disciplines of sciences. Therefor, these equations have been attracted the attention of a huge number of mathematicians and scientists who work in the areas in which these equations appear. Hence, it is worth of note to study these equations from theoretical and computational points of views. Because of the significance and broadly usage of these equations in numerous fields of mathematics. So, in this thesis, the first and the second kind of Volterra integral equations have been defined. The uniqueness theorems of these equations are discussed by using the fixed point theory. Many methods to solve linear as well as nonlinear Volterra integral equations are being considered. Then, methods of solving systems of such equations are also mentioned. In addition to the above mentioned, an attention is paid to the singular Abel Volterra integral equation.
On caputo modification of the hadamard fractional derivatives
(2014) Gambo, Yusuf Ya’u
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.
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.
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.
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.
Quality attributes investigation for saas in service level agreement
(2015) Almallah, Ashraf Nabeel Mohammedtaib
The cloud computing has been growing and becoming a new service model in business; in parallel, more service providers appear in the market. Hence, both quality and reliability of cloud computing services become essential topics as Quality of Service (QoS) requirements play major roles in service/provider selection. However, there is a significant concern for the QoS attributes considered in a service level agreement (SLA) while selecting service provider. Clarifying QoS attributes and related metrics for software as a service (SaaS) in SLAs are aimed in this work as the research question. It is partially observed that SaaS concerns more quality attributes than other services; also, availability of services is more considered in all SLAs. In this work, possible QoS attributes and metrics to be considered in SLAs for SaaS are presented. Main benefit of this work is defended as the QoS attributes are to be given major importance in the negotiation and evaluations of SLAs of cloud service. As major limitations, law/regulations, government/company policies and budgeting are not discussed. All these were led to answer the research questions by present 12 quality attributes with related metrics for SaaS.
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.
Traveling salesman problem: herustics and empirical evaluation
(2015) Kaya, Ahmet Sedat
In this thesis, three different algorithms with different perspectives (Close Couple, Worm, and Spider Web) has been developed to solve the Symmetric Traveling Salesman (TSP) heuristically. Improved algorithms with different data sets Distance Rate, Target have been tested. The running time and value of the solution have been compared. In this context, several steps of evaluation were used for the comparison and improvement of algorithms. After each evaluation step, one candidate algorithm is eliminated. Eventually, an improved version of the Spider Web algorithm is the winner of this contest.
Sentiment analysis and opinion mining via microblogging in social media like: twitter
(2015) Abd Al-Bnd, Mustafa Salman
This research is a study of microblogging on social websites such as Twitter and shows the techniques of emotion detection and sentiment analysis for the same. This research has three objectives. The first objective is a discussion about how to extract and classify emotions in tweets using the unigram feature extractor with word presence or word frequency as a factor of extraction. High accuracy of classification is obtained when considering the word presence as a factor of extraction. Moreover, one can obtain high accuracy also by using word frequency as a factor of extraction when supplying the test data on training corpora of tweets in the case of multi-domain tweets. The second objective is the extraction and classification of the emotions of tweets using n-gram (1
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.
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.
Radon transform based robust non-blind watermarking
(2013) Sıddık, Omer
The purpose of digital watermarking is to attempt to solve the copyright ownership problem for all multimedia data which can be image, audio or video. The main objective of this thesis is to design a robust method of image watermarking for copy protection and copyright protection. The thesis consists principally from an overview of watermarking algorithm, types of watermarking, watermarking requirements. Further the watermarking techniques that are used in embedding. There are many watermarking techniques discussed in spatial domain and transform domains. The spatial domain watermarking algorithms still not resistant to lossy compression image, shed noise in the image and most operations of image processing. On the other hand, frequency domain watermarking techniques can embed more bits for watermark and the watermarked images are more robust to attack. Otherwise, in frequency domain we can embed more bits and more resistance to the attacks. However, comparing watermarking in DWT with watermarking in DCT, DWT has a number of advantages that led us to focus in discrete wavelet transform from other types of same domain. In this thesis, there are three different watermarking methods proposed in different levels DWT based on radon transform. All proposed methods are requires the presence of original image for watermark extraction. Each method is various from the other from the way of embedding the watermark, the number of watermarks that embedded and in which level the watermark embedded. Moreover, the watermarked image and attacked images measured by the PSNR that measuring the noise ratio in each image. Finally, we attempt to extract the watermark and attacked image, to determine the proportion of the deterioration that occurred after the attack or the embedding process.
(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.

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