Computer Sciences Commons^™

Detection Of Land Use Change In Lake Maumelle Watershed Critical Management Area: Image Processing And Gis Integration Approach, Ling Zhang

Theses and Dissertations

Land use in the Lake Maumelle watershed is expected to undergo significant changes in the next several decades, with residential developments replacing forest in many areas. These land use changes have the potential to increase pollutant loads and degrade water quality in the lake. Detecting the land use and land cover changes is therefore a critical requirement for effective land management. Therefore, the research on the cost-effective methodology of detection of land use change is critical and of extreme significance. The first objective of this study is to develop an effective image classification method using very high resolution remote sensing …

Elucidation And Improvement Of Algorithms For Mass Spectrometry Isotope Trace Detection, Robert Anthony Smith

Theses and Dissertations

Mass spectrometry facilitates cutting edge advancements in many fields. Although instrumentation has advanced dramatically in the last 100 years, data processing algorithms have not kept pace. Without sensitive and accurate signal segmentation algorithms, the utility of mass spectrometry is limited. In this dissertation, we provide an overview and analysis of mass spectrometry data processing. A tutorial to ease the learning curve for those outside the field is provided. We draw attention to the lack of critical evaluation in the field and describe the resulting effects, including a glut of algorithm contributions of questionable novel contribution. To facilitate increased critical evaluation, …

Distributed Gui Testing Of Ios Applications With Hadoopunit, Krissada Dechokul

Theses and Dissertations

Smartphones have become an important medium of communication for millions of people. They have come to expect high-quality mobile applications, which have increased the importance of software testing in modern software development. While software testing can ensure the quality of a system under test (SUT), it has suffered from lengthy execution time, especially for system-level GUI testing. In general, system-level GUI testing can be time-consuming because it requires walking through every user interface element and every possible variation that users could experience through the GUI of the application. In addition, this type of testing exercises the SUT from the outside …

Ensemble Methods For Historical Machine-Printed Document Recognition, William B. Lund

Theses and Dissertations

The usefulness of digitized documents is directly related to the quality of the extracted text. Optical Character Recognition (OCR) has reached a point where well-formatted and clean machine- printed documents are easily recognizable by current commercial OCR products; however, older or degraded machine-printed documents present problems to OCR engines resulting in word error rates (WER) that severely limit either automated or manual use of the extracted text. Major archives of historical machine-printed documents are being assembled around the globe, requiring an accurate transcription of the text for the automated creation of descriptive metadata, full-text searching, and information extraction. Given document …

Rëndesia E Bi Sistemeve Në Institucionet E Kosovës, Elena Hajredini

Theses and Dissertations

Kjo temë ka për qëllim të përshkruaj rëndësinë e BI sistemeve në insitucionet e Kosovës duke marrë në konsideratë të mirat që mund të fitojnë insitucionet kosovare duke shfrytëzuar këtë teknologji për ndërveprim ndërmjet tyre, gjendjen aktuale dhe parashikimet për të ardhmen në bazë të rritjes së trendit të shfrytëzimit të BI sistemeve dhe në bazë të rezultateve ose përfitimeve nga shfyrtëzimi i tyre në të ardhmen. Thelbi i këtij hulumtimi është që të prezantoj përfitimet e insitucioneve nëse e shfrytëzojnë një vegël si Business Intelligence për ndërveprim në mes veti duke u bazuar në informacionet e centralizuara. Po ashtu …

An Analysis Of Eye Movements With Helmet Mounted Displays, Kalyn A. Tung

Theses and Dissertations

Helmet or Head-Mounted Displays (HMD) applications have expanded to include a range from advanced military cockpits to consumer glasses. However, users have documented loss of legibility while undergoing vibration. Recent research indicates that undesirable eye movement is related to the vibration frequency a user experiences. In vibrating environments, two competing eye reflexes likely contribute to eye movements. The Vestibulo-ocular Reflex responds to motion sensed in the otoliths while the pursuit reflex is driven by the visual system to maintain the desired image on the fovea. This study attempts to isolate undesirable eye motions that occur while using a HMD by …

A Recommender System In The Cyber Defense Domain, Katherine B. Lyons

Theses and Dissertations

In the cyber domain, network defenders have traditionally been placed in a reactionary role. Before a defender can act they must wait for an attack to occur and identify the attack. This places the defender at a disadvantage in a cyber attack situation and it is certainly desirable that the defender out maneuver the attacker before the network has been compromised. The goal of this research is to determine the value of employing a recommender system as an attack predictor, and determine the best configuration of a recommender system for the cyber defense domain. The most important contribution of this …

Pwm: A Secure Webmail System Designed For Easy Adoption, Benjamin W. Burgon

Theses and Dissertations

None of the three largest webmail service providers (serving over 1 billion users) support end-to-end message encryption. Encrypted email has never seen mass adoption because it is prohibitive for non-experts to use. Private WebMail (Pwm) is our extension to popular webmail systems that lets users easily encrypt sensitive messages without having to first contact the recipient and share information. It is designed to spread quickly in a grassroots fashion so that a user receiving their first encrypted message can quickly and easily start using the system. This thesis describes the design and implementation of Pwm, then measures its usability through …

Complexity, Heuristic, And Search Analysis For The Games Of Crossings And Epaminondas, David W. King Jr.

Theses and Dissertations

Games provide fertile research domains for algorithmic research. Often, game research helps solve real-world problems through the testing and refinement of search algorithms in game domains. Other times, game research finds limits for certain algorithms. For example, the game of Go proved intractable for the Min-Max with Alpha-Beta pruning algorithm leading to the popularity of Monte-Carlo based search algorithms. Although effective in Go, and game domains once ruled by Alpha-Beta such as Lines of Action, Monte-Carlo methods appear to have limits too as they fall short in tactical domains such as Hex and Chess. In a continuation of this type …

Managing Autonomy By Hierarchically Managing Information: Autonomy And Information At The Right Time And The Right Place, Rongbin Lin

Theses and Dissertations

When working with a complex AI or robotics system in a specific application, users often need to incorporate their special domain knowledge into the autonomous system. Such needs call for the ability to manage autonomy. However, managing autonomy can be a difficult task because the internal mechanisms and algorithms of the autonomous components may be beyond the users' understanding. We propose an approach where users manage autonomy indirectly by managing information provided to the intelligent system hierarchically at three different temporal scales: strategic, between-episodes, and within-episode. Information management tools at multiple temporal scales allow users to influence the autonomous behaviors …

Implementimi I Iptv Në Sistemet Telekomunikuese, Milot Bajrami

Theses and Dissertations

Ky punimi diplome shtjellon fazat e përgatitjes së një pakete të protokollit të internetit për implementim nëpër rrjetat telekomunikuese dhe më gjerësisht në sistemin IPTV, arkitekturën e thjeshtuar të një sistemi IPTV dhe si rast studimi është marrur implementimi i IPTV-së në Post dhe Telekomin e Kosovës si ndërmarrja më e madhe në tregun telekomunikues në vendin tonё. PTK si teknologji të transmetimit të televizionit ka zgjedhur teknologjinë IPTV nëpër DSL, pasi që ajo eliminon nevojën e një rrjeti sekondar përgjatë rrjetit ekzistues (twisted-pair network). Tani kemi kanalet televizive që na sigurojnë informacione 24 orë në ditë dhe në anën …

Analizing Protocols For Layer Three Network Redundancy, Taulant Galimuna

Theses and Dissertations

This thesis will analyze FHRP (First Hop Redundancy Protocols) which are three redundancy protocols of the IP Layer (layer 3). Protocols of the default gateway redundancy or FHRP are HSRP (Hot Standby Router Protocol) which is a Cisco proprietary and is an active/standby redundancy protocol, GLBP (Gateway Load Balancing Protocol) which is an active/active redundancy protocol and also it does Load Balancing, and the last VRRP (Virtual Redundant Routing Protocol) which is typically used with non-Cisco routers (such as Juniper) and is an extension of GLBP. Basically what FHRP protocols do is; they allow multiple redundant routers on the same …

Metodat Për Parandalimi E Rreziqeve Qe Vijnë Nga Shfrytëzimi I Internetit, Nalton Mustafa

Theses and Dissertations

Interneti është bere pjese e pa ndare e punës tone, por me këtë risi ka ardhur edhe rreziku i përhapjes se kodeve te dëmshme. Është fakte qe ne pjesën me te madhe te komunikimit e bëjmë me internet për një çmime shume te volitshëm duke komunikuar ne distanca shume te mëdha por qe kemi një kosto ne siguri te cilës duhet te i adresohemi.

Përfitimet nga interneti janë te shumta nga dërgimi i e-mail-eve, komunikimi me video dhe zë shikimi i videove, bartja e fajlla-ve leximi i gazetave, argëtimet e ndryshme etj.

Ne fokus te kësaj teme do te jete …

Analiza E Redundancës Në Shtresën 2 Të Rrjetës Kampus, Selim Kolgeci

Theses and Dissertations

Përgjatë viteve, kanë ndodhur ndryshime marramendëse në avancimin e teknologjisë së komunikimit dhe ka me mijëra aplikacione të cilat i gjejmë në treg. Shumë nga këto aplikacione janë të llojit (real-time) apo të pa-ndërprera dhe si të tilla janë të ndjeshme ndaj ndërprerjes së trafikut, për shkak të natyrës së tyre të shkëmbimit të të dhënave në kohë reale dhe pa pengesa. Në cilindo lloj të rrjetit, redundanca është tejet e rëndësishme që të sigurojë dhe të “shërojë” lidhjen përmes intervenimit automatik në rast të ndërprerjeve, dështimit apo de-aktivizimit të linkut për çfarëdo lloj arsye. Sido që të jetë, konsideroj …

Using Online Data Sources To Make Recommendations On Reading Material For K-12 And Advanced Readers, Maria Soledad Pera

Theses and Dissertations

Reading is a fundamental skill that each person needs to develop during early childhood and continue to enhance into adulthood. While children/teenagers depend on this skill to advance academically and become educated individuals, adults are expected to acquire a certain level of proficiency in reading so that they can engage in social/civic activities and successfully participate in the workforce. A step towards assisting individuals to become lifelong readers is to provide them adequate reading selections which can cultivate their intellectual and emotional growth. Turning to (web) search engines for such reading choices can be overwhelming, given the huge volume of …

Optimizing Ad-Hoc On-Demand Distance Vector (Aodv) Routing Protocol Using Geographical Location Data, Remo Cocco

Theses and Dissertations

This thesis summarizes the body of research regarding location-aided routing protocols for mobile ad-hoc networks (MANET). This study focuses on the use of geographical location information to reduce the control traffic overhead caused by the route discovery process in the ad-hoc on-demand distance vector (AODV) routing protocol. During this process, AODV will flood the entire network with route request packets. This introduces significant packet-handling overhead into the network. This thesis introduces Geographical AODV (GeoAODV), which uses geographical location information to limit the search area during the route discovery process to include only promising search paths. Also, this thesis benchmarks GeoAODV's …

Vigjilenca E Individëve Kundër Tentimeve ‘Phishing’: Rast Studimi Në Ubt, Enes Morina

Theses and Dissertations

Me siguri se secili përdorues kompjuteri ka pranuar ndonjë email për thyrje të identitetit (phishing) gjatë përvojës së vetë në internet. Disa dinë si të ballafaqohen me këtë ndërsa disa të tjerë nuk dinë si të ballafaqohen. Ky studim raporton se çka i bënë përdoruesit të dyshimtë për sulme phishing dhe cila është përgjigja e tyre kundrejt këtyre sulmeve. Hulumtimi ka filluar me hulumtimin e situatës eksistente duke rishikuar literaturë të ndryshme, e cila do të vijohet me dërgimin e pyetësorëve te hulumtimit te studentët. Pyetësori ka tetë pyetje dhe iu është dërguar më shumë se 100 përdoruesve të kompjuterëve …

Analyzing Implementation Of Ip Telephony Solutions, Erkan Ramadani

Theses and Dissertations

In this thesis, Voice over Internet Protocol (VoIP) technology will be explored and a recommendation of the operational benefit of VoIP will be provided. A network model will be used to demonstrate improvement of voice End-to-End delay by implementing quality of service (QoS) controls. An overview of VoIP requirements will be covered and recommended standards will be reviewed. Take some time-off from your busy schedules and have a look at what I have to say. I guarantee that you will change your mind. In the near future, if you make a telephone call, it is more than likely that it …

Cmsvega: A Content Management System For The Layman, Roshan P.J. Nedumpurath

Theses and Dissertations

Content management systems are becoming increasingly convoluted to use. Existing website creation systems require users without programming knowledge to scour documentation. A CMS should be intuitive, something a user can pick up and use right away. Simplicity is key when targeting layman users who have no web development knowledge. This project aims to create a simple and intuitive content management system, CMSVega, which users can pick up and use with minimal web development knowledge. A blind study was conducted to compare CMSVega against popular Wordpress, Drupal and Joomla systems. After having recreated a webpage using each CMS, participants were asked …

Mobile Indoor Positioning For Augmented Reality Systems, Robert B. Glass

Theses and Dissertations

This thesis explores the creation and setup of a prototype that allows users of the device to interact within an indoor real world environment and a virtual environment simultaneously using high-tech common technology. The prototype is comprised of a small mobile device such as a cellular mobile phone, Raspberry Pi computer, a battery powered handheld Pico projector, and software developed for the Android OS. The software can easily be ported to other mobile and non-mobile operating systems. The mobile device must contain accelerometer, magnetometer, and gyroscope embedded sensors as well as 802.11 wireless network chip. The prototype software implements an …

An Investigation Of Complex Systems In 16 Dimensions, Jordon M. Huffman

Theses and Dissertations

Sir Isaac Newton studied the world around him. He observed unexplainable phenomena that the math of his time could not prove. With the help of Gottfried Leibniz, he created infinitesimal calculus to prove his theories. The new concepts he created revolutionized science, and opened new realms of science previously unthought of. In 2002, Dr. Stephen Wolfram published A New Kind of Science, He argues that the processes of understanding cellular automata can be applied to other aspects of science. Dr. Rodrigo Obando of Columbus State University took Dr. Wolfram's work and dissected it. By breaking down the rules, he started …

Discovering Spam On Twitter, Ioana-Alexandra Bara

Theses and Dissertations

Twitter generates the majority of its revenue from advertising. Third parties pay to have their products advertised on Twitter through: tweets, accounts and trends. However, spammers can use Sybil accounts (fake accounts) [21] to advertise and avoid paying for it. Sybil accounts are highly active on Twitter performing advertising campaigns to serve their clients [5]. They aggressively try to reach a large audience to maximize their influence. These accounts have similar behavior if controlled by the same master. Most of their spam tweets include a shortened URL to trick users into clicking on it. Also, since they share resources with …

Web Service Transaction Correctness, Aspen Olmsted

Theses and Dissertations

In our research we investigate the problem of providing consistency, availability and durability for Web Service transactions. First, we show that the popular lazy replica update propagation method is vulnerable to loss of transactional updates in the presence of hardware failures. We propose an extension to the lazy update propagation approach to reduce the risk of data loss. Our approach is based on the "buddy" system, requiring that updates are preserved synchronously in two replicas, called buddies. The rest of the replicas are updated using lazy update propagation protocols. Our method provides a balance between durability (i.e., effects of the …

Parallel Processing Of Fully Homomorphic Encryption For A Cloud Environment, Ryan Hayward

Theses and Dissertations

Cloud computing is a boon for both business and private use, but data security concerns slow its adoption. Fully homomorphic encryption (FHE) offers the means by which cloud computing can be performed on encrypted data, obviating the data security concerns. FHE is not without its cost, as FHE operations take orders of magnitude more processing time and memory than the same operations on unencrypted data. Cloud computing can be leveraged to reduce the time taken by bringing to bear parallel processing. This thesis presents an implementatation of a processing dispatcher which takes an iterative set of operations on FHE encrypted …

Multi-Column Multi-Layer Computational Model Of Neocortex, Beata Strack

Theses and Dissertations

We present a multi-layer multi-column computational model of neocortex that is built based on the activity and connections of known neuronal cell types and includes activity-dependent short term plasticity. This model, a network of spiking neurons, is validated by showing that it exhibits activity close to biology in terms of several characteristics: (1) proper laminar flow of activity; (2) columnar organization with focality of inputs; (3) low-threshold-spiking (LTS) and fast-spiking (FS) neurons function as observed in normal cortical circuits; and (4) different stages of epileptiform activity can be obtained with either increasing the level of inhibitory blockade, or simulation of …

Aplikimi I Cms Për Krijimin E Portal: Përdorimi I Dotnetnuke Për Ndërtimin E Portal Dhe Website, Mentor Qorri

Theses and Dissertations

Në dekadën e fundit popullariteti në rritjen e World Wide Web ka çuar në një rritje eksponenciale të numrit të faqeve dhe portaleve që janë në dispozicion në Web. Ky numër kaq i madh i Web faqeve dhe portaleve e bën më se të vështirë për shfrytëzuesit e Internetit gjetjen e informacionit të nevojshëm. E tëra kjo është si pasojë e mos aplikimit të disa fazave të caktuara në zhvillimin e Web aplikacioneve, por edhe të aplikacioneve në përgjithësi. E tëra kjo është si përgjigje, ndaj zhvillimit të hershëm kaotik të Web sajteve te ndryshme dhe të aplikacioneve në përgjithësi, …

Shaping Swarms Through Coordinated Mediation, Shin-Young Jung

Theses and Dissertations

A swarm is a group of uninformed individuals that exhibit collective behaviors. Without any information about the external world, a swarm has limited ability to achieve complex goals. Prior work on human-swarm interaction methods allow a human to influence these uninformed individuals through either leadership or predation as informed agents that directly interact with humans. These methods of influence have two main limitations: (1) although leaders sustain influence over nominal agents for a long period of time, they tend to cause all collective structures to turn in to flocks (negating the benefit of other swarm formations) and (2) predators tend …

A Novel Spam Campaign In Online Social Networks, Yufeng Zhen

Theses and Dissertations

The increasing popularity of the Online Social Networks (OSNs)\nomenclature{$OSNs$}{Online Social Networks} has made the OSNs major targets of spammers. They aim to illegally gather private information from users and spread spam to them. In this paper, we propose a new spam campaign that includes following key steps: creating fake accounts, picking legitimate accounts, forming friendships, earning trust, and spreading spam. The unique part in our spam campaign is the process of earning trust. By using social bots, we significantly lower the cost of earning trust and make it feasible in the real world. By spreading spam at a relatively low …

The Pseudo-Rigid-Body Model For Fast, Accurate, Non-Linear Elasticity, Anthony R. Hall

Theses and Dissertations

We introduce to computer graphics the Pseudo-Rigid-Body Mechanism (PRBM) and the chain algorithm from mechanical engineering, with a unified tutorial from disparate source materials. The PRBM has been used successfully to simplify the simulation of non-linearly elastic beams, using deflections of an analogous spring and rigid-body linkage. It offers computational efficiency as well as an automatic parameterization in terms of physically measurable, intuitive inputs which fit naturally into existing animation work flows for character articulation. The chain algorithm is a technique for simulating the deflection of complicated elastic bodies in terms of straight elastic elements, which has recently been extended …

Cloud Computing Dhe Teknologjia E Gjelbër, Yll Konjufca

Theses and Dissertations

No abstract provided.