Matematik ve Bilgisayar Bölümü Tezleri

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

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A node authentication mechanism on wireless sensor networks
(2015) Ameen, Kameran Ali
A wireless sensor network (WSNs) is a network that consists of a large number of ultra-small autonomous devices which are resource-constrained called sensor nodes. Sensor networks may be deployed for a wide range of applications, including military sensing, environment monitoring and patient monitoring, etc. Sensors can collect, process and transmit data in a distributed and cooperative manner. They are usually deployed in an unattended environment (open area) and communicate with each other through wireless channels. Therefore, security is necessary to protect data from various types of attacks. The authentication process is one of the important ways to achieve security in WSNs. In this thesis, the pros of both symmetric and asymmetric key cryptography are used to achieve security. The proposed scheme secures communication by distributing the public key securely to both the base station and cluster head; as a result, this yields security of the message. The proposed scheme is efficient due to the application of data sequence over ECC, which in turn depends on the ECDLP. Therefore, it provides far more security and resistance against a number of attacks when compared with other existing schemes.
A study on human capital index in closing the digital divide and raising e-government performance in middle east countries
(2015) Ahmed, Ali
E-government initiatives aim to employ information and communications technology (ICT) to provide better services to citizens and businesses while challenging the digital divide, which leads to closing the divide so as to promote e-government performance. This thesis takes related works already reported in the literature and addresses major factors that played a main role in achieving digitized governments, especially in the Middle East and Arab countries. As the case study, performance indices of Iraq, Bahrain and the KSA from 2002 to 2014 are studied in depth. The problem has been identified as the steady decline in the Human Capital Index (HCI) in the region. Therefore, the nature of the HCI measurement has been investigated. Major findings demonstrate a relationship between the HCI and ICT skills index of the International Telecommunication Union with a considerable digital divide in ICT skills in the Arab countries in addition to poor performance in the HCI. This finding is also supported by interpreting the differences between the indices of the HCI versus the telecommunication infrastructure index (TII) and online services index (OSI). This quick tool reveals that a poor HCI prevents these countries from promoting higher ranks. Another finding emerging from the statistics shows that the HCI exhibits unique behavior that differs from the TII and OSI and that it (the HCI) needs more time to improve. It is therefore necessary to focus on investing in HCI and ICT skills and to develop policies and strategies by those governments in charge. Among the limitations of this thesis are information sources that include only previous studies in addition to websites and in-situ surveys that were not conducted. The legal, economic and cultural aspects of the HCI are not studied. The HCI and ICT skills indices are found to play unique roles in closing the digital divide and this effect can be observed even in rich Arab countries not found in the list of world e-government leaders
Analyzing digital image manipulation detection algorithms
(2015) Majeed, Sinan Nazar
In recent years tampering in digital image is becoming very widespread and more interesting. With powerful Image software, editing tools make a tampered image easy, thus the field of image forensic has become very important and crucial. In this thesis, investigation is made on the image by depending on the traces that occur when the soft correlation between rows and columns are divested in altered images, in term of linear dependency and exploitation of these traces in image forensic, depending on the properties of singular value decomposition and derived features which can be helpful and accurate sufficiently to reveal the tampering that is done on the genuine digital image.
Barriers and opportunities for e-commerce in Iraq: Perception of citizens
(2016) Hoshi, Alaa
The internet is a fashionable medium that both changes our lives and impact the behavior of Labor and consumer in both business and commerce. Several studies of e-commerce in developing countries have emphasized the barriers and opportunities of e-commerce associated with Information and communication Technology (ICT), regulatory environment, economic infrastructure and culture as most important factors of successful e-commerce. ICT has transformed the approach of many companies to conduct business around the globe, currently business is conducted online wider than traditional methods. Majority of the developing countries face limitations on the development of e-commerce, a numerous studies categorize the factors of e-commerce adoption in developing countries into two factors as external and internal factors. These factors are the main barriers for e-commerce adoption. While Middle-East is a fast growing and evolving region for e-commerce,e-commerce is still in its infancy in Iraq. Iraq's economy mostly relies on oil revenues and it is essential to diversify economic activity, e-commerce is one of the ways to realize this. Within this frame, the main aim of this research is to understand the barriers and opportunities of e-commerce and adoption level of e-commerce in Iraq as a developing country. In order to understand the main perceptional barriers of Iraqi citizens, a research was conducted with 110 participants. The findings of the research indicate that the most important barrier for e-commerce adoption in Iraq is related with Organizational, Governmental/ Legal and Financial Barriers. Due to the lack of comprehensive research for e-commerce in Iraq, this study will contribute to the literature with its findings related with barriers which form opportunities for e-commerce development.
Coverage in wireless sensor networks
(2015) Kareem, Dhakaa Mohsin.
Wireless Sensor Networks are developing as a key sensing technology, with various military and civilian applications. In these networks, a large number of sensors are distributed to sensing a target field. The sensors coverage mean that every point in the target field is sensing by at least one sensor. Each sensor is a limited battery-operated device that can sense events in its sensing range and can communicate with neighboring sensors. Since the life time of the sensor is dependent on its battery, where this battery is impossible to replace or recharge it in rough places, it is necessary to find an efficient energy way for it. Consumption of these limit energy batteries can result in the end of network life itself. Therefore, extending the lifetime of wireless sensor networks is important. Designing a schedule for sensors is an important goal in sensor networks to maximize the lifetime of the network. In this thesis presents a different way of scheduling to increase the lifetime of wireless sensor network. At all times, half of the full coverage is provided. Each sensor in our algorithm only needs to know the distances between its neighbor nodes and its sensing areas.Simulations show that new proposed algorithm noticeably improves several existing lifetime maximization algorithms. Also it improves the runtime.
Design of an information system for Al-Najaf international airport
(2015) Hassan, Alaa
Recently, the development of technology plays an active role in all areas of life. Geographic information systems (GIS) can provide airport management staff with visual pavement information and act as a powerful analysis tool. Meanwhile, the spatial information managed by GIS can ensure the accumulation of valid attribute data regarding airport pavement. Based on the principle and general implementation process of GIS and the characteristics of airport pavement management, this project describes the implementation process of GIS in Iraqi airport planning and design. Airport managers are finding that an airport geographic information system (AGIS) can help them to better manage both air- and ground-side operations; in this project, the section on the ground was the subject of the case study, represented the AGIS used in building infrastructure layers of Al-Najaf international airport buildings and pavements.
Energy efficiency in wireless sensor networks
(2015) Hussein, Mohammed
Wireless Sensor Networks (WSNs) are consists of small sensor nodes with limited battery power, processing and memory units. There are two important features in WSNs. The first one is the infrastructure-less and second one is the self-organization. These properties make sensors convenient choice for several applications. When we try to investigate algorithms and protocols for wireless sensor networks we must study the features and constraints of WSNs. However, battery recharge is not possible or extremely challenging for sensor nodes. The main aspect in designing wireless sensor networks algorithms and protocols is ensuring energy efficiency and prolong the sensor network lifetime. Farther more the sensor node position within the set of deployed nodes decides which tasks have to be carried out and how many communication paths involve each individual sensor node. On the other hand the sensor networks in more obstructed environments, the path loss exponent value is vary. The high path loss exponent value increases unbalance energy depletion between nodes. In this thesis we investigated two node deployment strategies which are uniform and non-uniform (normal distribution) sensor node deployments with various path loss exponent values. We used a Linear Programming (LP) framework to analyze the effect of node deployment model on the network lifetime. Also we studied the effect of path loss on the wireless sensor network lifetime. Our results showed that by normal node deployment, energy balance can be improved up to certain level. However, increasing path loss exponent in normal node deployment may lead to decrease in improvement ratio.
Fractional Caputo-Fabrizio derivative with applications
(2015) Kareem, Ahmed
In this thesis, I pointed out three very recent applications of the new established fractional Caputo-Fabrizio derivative and I discussed its related properties and theorems. The associated fractional integral was displayed and the Laplace transform of the Riemann-Liouville and Caputo fractional differential operators was presented.
Human identification with palmprint based on local binary pattern
(2015) Fargo, Janan
Palmprint recognition is one of the research areas is considered in recent years. In this thesis, we introduce a new method for human Palmprint identification system with local binary pattern. First, the palm images are preprocessing with morphological technics. Then the feature extraction for images is applied. We used local binary pattern and gray level Co-occurance matrix for desired features. This approach is tested for 500 people and there are 1, 2, 3... 7 image from each people. Our method is compared with PCA method and Wavelet continuous transformation. The result shows that proposed method is efficiency and good performance for Palmprint recognition.
Hybrid System Modeling and Simulation with Tumor-Immune System Application
(2016) Al-Windawi, Hannadi Nozad
Cancer dynamics exhibits complex behavior due to different factors. Immune system interaction is one of those factors. There exist mathematical models that investigate these interactions. In this thesis, we have used hybrid system modeling that offers several improvements. One of the main advantages of this modeling is that we can investigate through sensitivity analysis the effect of changing the threshold values, which means a point or level at which range changes in model behavior. Hybrid systems provide a promising area in mathematical modeling of many biological and physiological systems. From this point of view, to test the capability of hybrid systems in the sense of simulation is a strong motivation. In this work, we have observed the capability of hybrid system modeling in terms of analysis and computation. We have verified that when we substitute the solvable one, we reduce the complexity in the sense of reasonable computational resources
Investigation of human capital index measurement in the middle east countries
(2015) Hussein, Mohammed
The field of e-government has become one of the most developed and most important applications of Information and Communication Technology (ICT) around the world in recent years due to its positive impact on citizens, government and society because it refers to delivering government public services using ICT. The e-readiness assessment and e-government performance measurements for a country rely on the availability of necessary infrastructure, online services and readiness of a community to use e-government applications. This study focuses how the Human Capital Index (HCI) fits into e-government performance measurements in Middle Eastern countries. In parallel to the background, literature review and analysis data of Middle East countries in HCI, investigation in HCI for Middle East countries and potential issues that effect on HCI in those countries are done. Also, the impact of HCI proportion on the e-government performance is addressed. The findings reveal impact of HCI on evaluating the e-government performance; geographical area and population also affect the adoption of e-government. Additionally, the level of ICT and computer literacy is relatively poor in Middle Eastern countries. This research has limitations which include the sources of information, exclusive economic and legal issues and a limited number of measurement methods. Finally, the research opens HCI's weight into discussion in the evaluation of e-government performance although it is clear that whenever HCI increases in a country, it leads to an increase in e-government performance with the investigated measurement methods
Lyapunov stability theory with some applications
(2015) Bagelany, Ronak.
In this thesis, a detailed overview of Lyapunov stability theorems of linear and nonlinear systems is presented. The Lyapunov first and second methods are investigated and the stability analysis of fractional differential systems is highlighted. A new Lemma for the Caputo fractional derivative is reviewed and a class of fractional-order gene regulatory networks is investigated. Besides the stabilization of continuous-time fractional for positive linear systems is reviewed. An elementary Lemma which estimates the fractional derivatives of Volterra-type Lyapunov functions is also put forward, in order to see how it can satisfy the uniform asymptotic stability of Caputo-type epidemic systems.
Management of spatial data of residential areas in Kirkuk via GIS technology
(2015) Jamal, Ghazi Jamal
Due to the importance of Kirkuk which is located between longitudes (44° 26' 27 "E - 44° 17'10 "E), and latitudes (35° 30' 34 "N - 35° 20 '5 "N), has reached the researcher to choose representation cartographer for the selection of the best residential areas. This study was characterized by the use of systems software geographic information of the program (Arc GIS .v.10.0) and remote sensing techniques of virtual satellite patched (Quick Bird) and captured by the US satellite, with accuracy discriminatory (0.60 cm) for the year 2008 and the use of a huge database of the city and all uses of the land where the base. This study serve to increase the wheel ideal urban development and urban planning on the grounds of residential areas and the center of gravity is the foundation of a city by creating substantial network infrastructure and distribution services by global and regional standards that are spread around the scale. The researcher test all areas of the city land in residential areas to reach the best and most suitable areas such as education, health, commercial, recreational and religious spaces. On the other hand, has compared the security reality of Iraq in general and the study area, in particular, by testing the police stations sites that cause a threat to residential areas for its existence within the scope of these areas depending on the user criterion which in turn results bodily harm as a physical in case of any terrorist act at these centers. In addition, the researcher to build an internal transportation network is ideal represented by the shortest path base and less time to publish this network to all parties and the revival of the city housing, education, health and industrial areas to the comprehensive coverage of the city and the distribution of bus stations in a perfect way a distance of (500 m) between each bus station.
Manipulation detection in uncompressed video
(2016) Hazzaa, Nidhal
In recent years due to advancement in video and image editing tools it has become increasingly easy to modify content of multimedia. Doctored videos are very difficult to identify through visual examination as artifacts left behind by processing steps are subtle and cannot be easily captured visually. Therefore, the integrity of digital videos cannot be taken for granted and these are not readily acceptable as a proof-of-evidence in a court-of-law. Hence, identifying the authenticity of videos has become an important field of information security. This thesis presents an approach to detect and temporally localize video forgery, based on the correlation of noise residual using the Discrete Wavelet Transformation (DWT) algorithm for de-noising. The proposed algorithm is tested on public datasets such as SULFA are used for performance evaluation. The results show that the approach is effective against manipulation techniques. In addition, it detects and localizes tampered frames in a video with high accuracy.
Solution of fractional burger equation and studing the statistical properties of the solution
(2014) Al-Jaf, Sarkesh
The main purpose of this thesis is to find the solution of fractional Burger equation and study statistical properties of the solution. The solution was found in a truncated series form. As shown in the figure the waves are due to earth quake. The statistical concepts are used to ensure that the solution agrees with nature.
Some new trends in superintegrable systems
(2015) Abdullah, Suaad
The Hamiltonian integrability in classical mechanics and the explicit metrics for a class of two-dimensional cubically superintegrable systems are reviewed. Firstly, the integrals that are quadratic in moments corresponding to the natural Lagrangian systems are discussed with a special view focus to the two-dimensional case. The classical free Lagrangian admitting a constant of motion, in one and two dimensional space, was generalized by using the fractional Caputo derivative. The fractional Killing vectors and Killing-Yano tensors are presented in connection with the hidden symmetries of curved spaces. The Dunkl-Coulomb system in the plane was considered. The model that was defined in terms of the Dunkl Laplacian, involves reflection operators, with a r^(-1) potential. The system is shown to be maximally superintegrable and exactly solvable.
Some spectral methods with applications for the numerical solutions of partial differential equations
(2016) Altunalan, Tuğba
This thesis examines how some classes of partial differential equations are solved numerically by using a set of spectral methods, namely Spectral Collocation method and Spectral Galerkin method. It begins with a brief reminder about orthogonal polynomials and fundamentals of partial differential equations. Then, the description of the considered spectral methods are given in the following part of the thesis. The use of spectral methods for solving real-world problems which are modelled by partial differential equations, is given through some illustrative examples which appears in different fields of science and engineering. Therefore, the usability, efficiency and the importance of the studied spectral methods are emphasized. In these recently studied representative examples, which are reviewed from various application areas, some new and very performant mathematical tools were involved, namely fractional differential operators. The obtained numerical results from the mentioned spectral methods were presented through simulations with a comparative study by some other numerical methods in the literature.
The control of traffic light based on architecture of vanet and sensor devices
(2015) Al-Windawi, Ayad Nozad
Traffic coordination in streets is a very important and challenging issue. The project gives an adaptive traffic light system based on wireless communication between vehicles and embedded controller nodes existed in intersections and roadside. We have developed an integrated simulation environment. It is discussed that our system can improve traffic fluency in the streets and has clear advantages regarding performance, time saving and fuel consumption. We have used Intelligent Transportation Systems (ITS) to overcome the road limitation resultants. We are proposing a system design with its protocol and set of algorithms to balance the road traffic load and make the driving on highways and urban cities roads easier and more comfortable. By applying this system on roads, we expect to see an easy traffic flow and more efficient and comfortable driving. Given application results were got from simulation studies, are compared with our system to show the significance or the need for a proposed system with its protocol's control actions and strategies.
Usability of phr systems
(2016) Almadani, Yasser Abdulhaleem Abdulkareem
It is a fact that Personal Health Record (PHR) systems are vital for people to track their health status. At present, developing countries, such as Turkey, have been established PHR systems to make the service available to their citizens. However, despite the extensive worldwide distribution of PHR systems, their usage is very limited. This is in spite of the importance of the usability of these PHR systems since their usability supports error prevention and improvement in efficiency and makes systems understandable to potential users. Likewise, usability is the key factor for a system to be used widely, and therefore it is important to develop PHR systems that interact better with the users and thus increase usage of PHR systems. In this study, the newly introduced E-Nabız and the well-established HealthVault systems are compared at the levels of efficiency, effectiveness and satisfaction to analyze their usability. The research methodology consisted mainly of usability experiments, questionnaires and interviews, while the obtained results are analyzed qualitatively and quantitatively. The research findings are expected to enrich and contribute to the usability of PHR systems and Human Computer Interaction literature.

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