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2016

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Online Monitoring And Accident Diagnosis Aid System For The Nur Nuclear Research Reactor, Amina Nasrine Allalou, Mohamed Tadjine, Mohamed Seghir Boucherit Jan 2016

Online Monitoring And Accident Diagnosis Aid System For The Nur Nuclear Research Reactor, Amina Nasrine Allalou, Mohamed Tadjine, Mohamed Seghir Boucherit

Turkish Journal of Electrical Engineering and Computer Sciences

This paper deals with the design of a computerized monitoring and diagnosis aid system (CMDAS) for the Nur Nuclear Research Reactor based on real-time plant-specific safety parameters. The CMDAS carries out early detection and identification of accidents that might affect this reactor using supervised neural networks. The graphical programming language LabVIEW is used for creating a human--operator interface, networking, embedding the diagnosis procedure, and handling and storing the data. The methodology presented in this paper can be adapted for any nuclear research reactor.

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A Facial Component-Based System For Emotion Classification, Elena Sönmez, Songül Albayrak Jan 2016

A Facial Component-Based System For Emotion Classification, Elena Sönmez, Songül Albayrak

Turkish Journal of Electrical Engineering and Computer Sciences

Smart environments with ubiquitous computers are the next generation of information technology, which requires improved human--computer interfaces. That is, the computer of the future must be aware of the people in its environment; it must know their identities and must understand their moods. Despite the great effort made in the past decades, the development of a system capable of automatic facial emotion recognition is still rather difficult. In this paper, we challenge the benchmark algorithm on emotion classification of the Extended Cohn-Kanade (CK$+)$ database, and we present a facial component-based system for emotion classification, which beats the given benchmark performance: …

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Wideband Analysis Of Planar Scalable Antennas And Pec Bodies Using Cbfm, Sema Nur Koç, Adnan Köksal Jan 2016

Wideband Analysis Of Planar Scalable Antennas And Pec Bodies Using Cbfm, Sema Nur Koç, Adnan Köksal

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, scattering and radiation from scalable planar bodies are investigated in a wide frequency band. Characteristic basis functions (CBFs) are utilized for this purpose with a different approach. The CBFs for the body are calculated at the highest frequency of interest and reused at other frequencies. As the frequency decreases, the unnecessary CBFs are removed from the basis set. The reduced impedance matrices generated at lower frequencies are also used for the calculation of the ones at higher frequencies. As a result, a significant reduction in CPU time is obtained with the proposed method. Numerical results for the …

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Stability Analysis Of An Asymmetrical Six-Phase Synchronous Motor, Arif Iqbal, Gk Singh, Vinay Pant Jan 2016

Stability Analysis Of An Asymmetrical Six-Phase Synchronous Motor, Arif Iqbal, Gk Singh, Vinay Pant

Turkish Journal of Electrical Engineering and Computer Sciences

This paper deals the stability analysis of a six-phase synchronous motor using eigenvalue criteria from its linearized model, so that the small displacement stability during steady-state condition can be accessed. Eigenvalue provides a simple but effective means for the stability analysis of a motor. An association between eigenvalues and motor parameters has been established, followed by the formulation of transfer functions and plotting the root locus of system, employing the dq0 approach in the MATLAB environment.

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An Innovative Peak Detection Algorithm For Photoplethysmography Signals: An Adaptive Segmentation Method, Ahmet Reşi̇t Kavsaoğlu, Kemal Polat, Mehmet Recep Bozkurt Jan 2016

An Innovative Peak Detection Algorithm For Photoplethysmography Signals: An Adaptive Segmentation Method, Ahmet Reşi̇t Kavsaoğlu, Kemal Polat, Mehmet Recep Bozkurt

Turkish Journal of Electrical Engineering and Computer Sciences

The purpose of this paper is twofold. The first purpose is to detect M-peaks from raw photoplethysmography (PPG) signals with no preprocessing method applied to the signals. The second purpose is to estimate heart rate variability (HRV) by finding the peaks in the PPG signal. HRV is a measure of the fluctuation of the time interval between heartbeats and is calculated based on time series between strokes derived from electrocardiogram (ECG), arterial pressure (AP), or PPG signals, separately. PPG is a method widely used to measure blood volume of tissue on the basis of blood volume change in every heartbeat. …

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Finger-Vein Biometric Identification Using Convolutional Neural Network, Syafeeza Ahmad Radzi, Mohamed Khalil Hani, Rabia Bakhteri Jan 2016

Finger-Vein Biometric Identification Using Convolutional Neural Network, Syafeeza Ahmad Radzi, Mohamed Khalil Hani, Rabia Bakhteri

Turkish Journal of Electrical Engineering and Computer Sciences

A novel approach using a convolutional neural network (CNN) for finger-vein biometric identification is presented in this paper. Unlike existing biometric techniques such as fingerprint and face, vein patterns are inside the body, making them virtually impossible to replicate. This also makes finger-vein biometrics a more secure alternative without being susceptible to forgery, damage, or change with time. In conventional finger-vein recognition methods, complex image processing is required to remove noise and extract and enhance the features before the image classification can be performed in order to achieve high performance accuracy. In this regard, a significant advantage of the CNN …

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A New Security Relation Between Information Rate And State Size Of A Keystream Generator, Orhun Kara, İmran Ergüler, Emi̇n Anarim Jan 2016

A New Security Relation Between Information Rate And State Size Of A Keystream Generator, Orhun Kara, İmran Ergüler, Emi̇n Anarim

Turkish Journal of Electrical Engineering and Computer Sciences

Wireless communication in near field applications is becoming widespread. Most of the devices such as sensor networks or RFID applications are operated in constraint environments and some of these prevalent technologies require security applications. As one conclusion, the design and analysis of lightweight cryptographic algorithms has been one of the favorite research subjects over the last decade. We have seen that mostly lightweight block ciphers have been designed as symmetric encryption algorithms. The main reason is that stream ciphers are supposed to have large internal states due to the strict requirement related to their resistance against tradeoff attacks (time--memory--data tradeoff …

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Gain And Coherence Collapse Condition For A Laser Diode With Optoelectronic Feedback Using Volterra Series, Remzi̇ Yildirim, Hüseyi̇n Canbolat Jan 2016

Gain And Coherence Collapse Condition For A Laser Diode With Optoelectronic Feedback Using Volterra Series, Remzi̇ Yildirim, Hüseyi̇n Canbolat

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

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Power Management Using Dynamic Power State Transitions And Dynamic Voltage Frequency Scaling Controls In Virtualized Server Clusters, Mohan Raj Velayudhan Kumar, Shriram Raghunathan Jan 2016

Power Management Using Dynamic Power State Transitions And Dynamic Voltage Frequency Scaling Controls In Virtualized Server Clusters, Mohan Raj Velayudhan Kumar, Shriram Raghunathan

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

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Gravitational Search Algorithm For Determining Controller Parameters In An Automatic Voltage Regulator System, Serhat Duman, Nuran Yörükeren, İsmai̇l Hakki Altaş Jan 2016

Gravitational Search Algorithm For Determining Controller Parameters In An Automatic Voltage Regulator System, Serhat Duman, Nuran Yörükeren, İsmai̇l Hakki Altaş

Turkish Journal of Electrical Engineering and Computer Sciences

proportional-integral-derivate (PID) controller for an automatic voltage regulator (AVR) system using a heuristic gravitational search algorithm (GSA) based on mass interactions and Newton's law of gravity. The determination of optimal controller parameters is considered an optimization problem in which different performance indexes and a performance criterion in the time domain have been used as objective functions to test the performance and effectiveness of the GSA. In the determining process of the parameters, the designed PID controller with the proposed approach is simulated under different conditions and the performance of the controller is compared with those reported in the literature. From …

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An Efficient Lof-Based Long-Range Correlation Filter For The Restoration Of Salt And Pepper Impulse Corrupted Digital Images, Justin Varghese, Saudia Subash, Mohamed Samiulla Khan, Krishnan Nallaperumal, Bijoy Babu, Mohammed Ramadan Saadi Jan 2016

An Efficient Lof-Based Long-Range Correlation Filter For The Restoration Of Salt And Pepper Impulse Corrupted Digital Images, Justin Varghese, Saudia Subash, Mohamed Samiulla Khan, Krishnan Nallaperumal, Bijoy Babu, Mohammed Ramadan Saadi

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

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Investigation Of An Object Follower System, Eli̇f Erzan Topçu, Ahmet Demi̇rkesen, İbrahi̇m Yüksel Jan 2016

Investigation Of An Object Follower System, Eli̇f Erzan Topçu, Ahmet Demi̇rkesen, İbrahi̇m Yüksel

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.

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Implementation Analyses Of Proteins And Genes Obtained From Cancer Patients, Murat Demi̇r, Ali̇ Karci Jan 2016

Implementation Analyses Of Proteins And Genes Obtained From Cancer Patients, Murat Demi̇r, Ali̇ Karci

Turkish Journal of Electrical Engineering and Computer Sciences

bioinformatics and computational molecular biology, since these studies may result in important results in the case of diseases. Due to this, in this study, bioinformatics data were analyzed based on nucleotides and motifs. Bioinformatics data for proteins were obtained from two different databases. The obtained data belonged to cancer patients, and the genes in these DNA and protein sequences, the proteins synthesized by these sequences, and motifs in these data were analyzed. In the analysis, the ABCB1, ALOX5AP, AKT1, BRCA1, BRCA2, TNF, TNFSF13B, TP53, TP63, TP73, and WT1 genes were used. The proteins synthesized by genes belonging to similar classes …

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Short-Term Economic Emission Power Scheduling Of Hydrothermal Systems Using Improved Chaotic Hybrid Differential Evolution, Tahir Nadeem Malik, Salman Zafar, Saaqib Haroon Jan 2016

Short-Term Economic Emission Power Scheduling Of Hydrothermal Systems Using Improved Chaotic Hybrid Differential Evolution, Tahir Nadeem Malik, Salman Zafar, Saaqib Haroon

Turkish Journal of Electrical Engineering and Computer Sciences

utilities to retain their generations within maximum allowable emission levels. Therefore, in present-day power system operations, the minimization of emission pollutants along with the total fuel cost has become an important aspect in short-term generation scheduling of hydrothermal power systems. This paper presents an improved hybrid approach based on the application of chaos theory in a differential evolution (DE) algorithm for the solution of this biobjective constrained optimization problem. In this proposed methodology, self-adjusted parameter setting in DE is obtained by using chaotic sequences. Secondly, a chaotic hybridized local search mechanism is embedded in DE to avoid it from trapping …

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Cascaded Half-Full-Bridge Pwm Multilevel Inverter Configuration, Charles Ikechukwu Odeh Jan 2016

Cascaded Half-Full-Bridge Pwm Multilevel Inverter Configuration, Charles Ikechukwu Odeh

Turkish Journal of Electrical Engineering and Computer Sciences

inverter topology. It is made up of a main inverting H-bridge legs and level-clamping half-bridge circuits, each having its own dc source. The single-carrier, multilevel PWM scheme is employed to generate gating signals for the power switches. The modulation scheme is hybridized to enable the output voltage of the proposed inverter configuration to inherit the features of switching-loss reduction from fundamental PWM and good harmonic performance from multiple sinusoidal PWM. Moreover, a simple base PWM circulation scheme is also introduced in this work to obtain a resultant sequential switching hybrid PWM (SSHPWM) circulation that balances power dissipation among the four …

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A Current Feedback Control Strategy For Parallel-Connected Single-Phase Inverters Using A Third-Order General-Integrator Crossover Cancellation Method, Yuan Huang, An Luo Jan 2016

A Current Feedback Control Strategy For Parallel-Connected Single-Phase Inverters Using A Third-Order General-Integrator Crossover Cancellation Method, Yuan Huang, An Luo

Turkish Journal of Electrical Engineering and Computer Sciences

Virtual impedance is usually introduced to the control system of parallel inverters in order to change the inverter equivalent output impedance and to enhance control accuracy and power sharing. In this paper, a current feedback control strategy using a third-order general-integrator crossover-cancellation method that can be implemented in a virtual impedance loop is proposed. This method consists of 2 parts: a crossover-cancellation feedback network, which achieves the band-pass effect, and a multilevel TOGI-OSG link, which acts as a filter. Compared with the conventional virtual impedance method, the proposed method can avoid derivation of output current, reduce system calculating burden, and …

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The Use Of Cross-Company Fault Data For The Software Fault Prediction Problem, Çağatay Çatal Jan 2016

The Use Of Cross-Company Fault Data For The Software Fault Prediction Problem, Çağatay Çatal

Turkish Journal of Electrical Engineering and Computer Sciences

We investigated how to use cross-company (CC) data in software fault prediction and in predicting the fault labels of software modules when there are not enough fault data. This paper involves case studies of NASA projects that can be accessed from the PROMISE repository. Case studies show that CC data help build high-performance fault predictors in the absence of fault labels and remarkable results are achieved. We suggest that companies use CC data if they do not have any historical fault data when they decide to build their fault prediction models.

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Subglacial Sediment Transport, Ice Stream Dynamics, And Chemical Weathering Of The Whillans Ice Stream Inferred From Particle Surface Texture, Form, And Composition, Rebecca A. Puttkammer Jan 2016

Subglacial Sediment Transport, Ice Stream Dynamics, And Chemical Weathering Of The Whillans Ice Stream Inferred From Particle Surface Texture, Form, And Composition, Rebecca A. Puttkammer

Graduate Research Theses & Dissertations

Subglacial sediment from the Whillans Ice Stream, West Antarctica was studied in order to investigate the primary subglacial sediment transportation agent, ice stream dynamics, and chemical weathering under Whillans Ice Stream (WIS). Scanning electron microscopy on quartz sand grains, gravel form, roundness, and textural and compositional analyses were performed on sediment samples from cores recovered from three subglacial sites including Upstream Whillans (UpB) from 1988-93, Subglacial Lake Whillans (SLW) in 2012-13, and Whillans Grounding Zone (WGZ) in 2014-15. This study is part of the Whillans Ice Stream Subglacial Access Research Drilling (WISSARD) project that uses in situ samples to document …

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Supersymmetric Particle Production At Post-Lhc Proton-Proton Colliders, Shane Sullivan Jan 2016

Supersymmetric Particle Production At Post-Lhc Proton-Proton Colliders, Shane Sullivan

Graduate Research Theses & Dissertations

In this thesis, I study cross sections for production of supersymmetric particles at next-to-leading order (NLO) in perturbation theory in quantum chromodynamics (QCD) at proton-proton colliders. Supersymmetry as a theory aims to correct shortcomings of the current Standard Model of particle physics, and while supersymmetry has not been confirmed at the Large Hadron Collider, proposed higher energy colliders may hold the key to discovering particles fundamental to the theory and confirming its validity. This analysis focused on supersymmetric particle production at future proton-proton colliders, given current mass constraints from the Large Hadron Collider in conjunction with future collider energies currently …

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Creativity, Policy, And Practice : A Three-State Exploration Of Relationships Between Definitions Of Creativity In State Art Education Policies And Their Application By Middle-Level Art Educators, Christopher Grodoski Jan 2016

Creativity, Policy, And Practice : A Three-State Exploration Of Relationships Between Definitions Of Creativity In State Art Education Policies And Their Application By Middle-Level Art Educators, Christopher Grodoski

Graduate Research Theses & Dissertations

More than ever, creativity is a necessary outcome for education. A global and networked society requires U.S. citizens to innovate within a variety of complex economic, political, and social realities. The necessity of creativity highlights a crucial role for art education in contemporary education. However, there is a lack of clarity about what constitutes creativity. In particular, there is a lack of knowledge about how research, policy, and the life contexts of art educators relate to the operationalization of creativity in practice. This study addresses an area of neglect by exploring relationships among categories of creativity in research, federal and …

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Design And Synthesis Of Ispe Inhibitors As Potential Antibacterial Agents, Jeremy Ryan Troxell Jan 2016

Design And Synthesis Of Ispe Inhibitors As Potential Antibacterial Agents, Jeremy Ryan Troxell

Graduate Research Theses & Dissertations

This thesis explores the inhibition of the IspE enzyme, found within the 2-C-methyl-D-erythritol 4-phosphate (MEP) pathway, using a variety of molecular scaffolds for the development of potential antibacterial agents. This research involved two distinct projects: First, the design of an improved synthetic route for MEP. MEP is the substrate utilized in the IspD reaction and can be converted enzymatically to produce CDP-ME, the substrate for IspE. Therefore, MEP is a valuable compound that is necessary for our IspD and IspE inhibition assays. Second, the design and synthesis of two different scaffold series was implemented for the purpose of developing IspE …

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Nonprehensile Throwing Manipulation Of A Disk-Shaped Object With A Disk-Shaped End Effector, Sujithkumar Pasupuleti Jan 2016

Nonprehensile Throwing Manipulation Of A Disk-Shaped Object With A Disk-Shaped End Effector, Sujithkumar Pasupuleti

Graduate Research Theses & Dissertations

Robots are mechatronic systems, widely being used in streams of engineering, medicine and entertainment. Especially in mechanical industries, robots are extensively used in material handling, welding and painting units. However, the available robotic mechanisms may not be efficient in handling materials when they are too large to grasp with grippers. In this case, use of nonprehensile manipulation could offer better results. In this thesis, nonprehensile throwing manipulation of a disk-shaped object with a disk-shaped end effector is presented. The end effector is attached to a two-link robotic manipulator arm. The throwing motion is proposed in such a way that the …

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Living With The Water - Too Much, And Too Little, Virginia Coastal Policy Center, William & Mary Law School Jan 2016

Living With The Water - Too Much, And Too Little, Virginia Coastal Policy Center, William & Mary Law School

Virginia Coastal Policy Center

No abstract provided.

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The Optimization Of The Synthesis And Characterization Of Vapor-Liquid-Solid Grown Zno Nanowires, Silas R. Fiefhaus Jan 2016

The Optimization Of The Synthesis And Characterization Of Vapor-Liquid-Solid Grown Zno Nanowires, Silas R. Fiefhaus

Theses and Dissertations--Chemistry

ZnO nanowires are a promising material with great semiconductor properties. ZnO nanowires were prepared by carbothermal reduction and vapor-liquid-solid growth mechanism. Altering a variety of parameters ranging from mole to mole ratio of ZnO to C all the way to gas flow rate was examined. The nanowires were then characterized and their morphology examined under a SEM to observe what effect the parameter had on the morphology of the nanowires. From the experiments and the parameters tested it was observed that in order to produce the highest quality straight nanowires one should use a mole to mole ratio of ZnO …

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Towards An Understanding Of The Role Of Cation Packaging On Dna Protection From Oxidative Damage, Cody E. Gay Jan 2016

Towards An Understanding Of The Role Of Cation Packaging On Dna Protection From Oxidative Damage, Cody E. Gay

Theses and Dissertations--Chemistry

In sperm chromatin, DNA exists in a highly condensed state reaching a final volume roughly twenty times that of a somatic nucleus. For the vast majority (>90%) of sperm DNA in mammals, somatic-like histones are first replaced by transition proteins which in turn are replaced by arginine-rich protamines. This near crystalline organization of the DNA in mature sperm is thought crucial for both the transport and protection of genetic information since all DNA repair mechanisms are shut down. Recent studies show that increased DNA damage is linked to dysfunctions in replacing histones with protamines resulting in mispackaged DNA. This …

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Towards An Understanding Of Pharmacologically Induced Intracellular Changes In Nicotinic Acetylcholine Receptors: A Fluorescence Microscopy Approach, Ashley M. Loe Jan 2016

Towards An Understanding Of Pharmacologically Induced Intracellular Changes In Nicotinic Acetylcholine Receptors: A Fluorescence Microscopy Approach, Ashley M. Loe

Theses and Dissertations--Chemistry

Upregulation of nicotinic acetylcholine receptors (nAChRs) is a well-documented response to chronic nicotine exposure. Nicotinic acetylcholine receptors are pentameric ligand-gated ion channels consisting of alpha (α2-10) and beta (β2-4) subunits. Nicotine, an agonist of nAChRs, alters trafficking and assembly of some subtypes of nAChRs, leading to an increase in expression of high sensitivity receptors on the plasma membrane. These physiological changes in nAChRs are believed to contribute to nicotine addiction, although the mechanism of these processes has not been resolved. Recently, many studies have converged on the idea that nicotine induces upregulation by an intracellular mechanism. In this dissertation, expression …

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Organometallic Materials: Ferroceno[C]Thiophenes And 1,2-Bisthienylmetallocenes, Surya R. Banks Jan 2016

Organometallic Materials: Ferroceno[C]Thiophenes And 1,2-Bisthienylmetallocenes, Surya R. Banks

Theses and Dissertations--Chemistry

Development of synthetic routes toward two general organometallic frameworks was undertaken. The first project involved synthetic attempts of substituted and unsubstituted ferroceno[c]thiophene while the second one was the synthesis of 1,2-dithienylmetallocenes. The long-term goal of this work is to lay the foundations for study of electronic, electrochromic, redox, and optical properties of thiophene-based materials integrated with organometallic systems such as ferrocene, ruthenocene and cymantrene. The synthetic pathway for the target molecule in the first project involved converting 1,2-bis(hydroxymethyl)ferrocene to 1,2-bis(thiouroniummethyl)ferrocene with thiourea under acidic conditions. Refluxing the salt in base followed by acidification resulted in 1,2-bis(mercaptomethyl)ferrocene, which is …

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Green Infrastructure In The Community Ratings System: A Proposed Path To National Flood Insurance Program Recognition, Kevin Macwhorter, Kathleen Zaratzian Jan 2016

Green Infrastructure In The Community Ratings System: A Proposed Path To National Flood Insurance Program Recognition, Kevin Macwhorter, Kathleen Zaratzian

Virginia Coastal Policy Center

No abstract provided.

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Value-At-Risk (Var) Estimation With Extreme Mixture Model And Backtesting Diagnostics, Rexford M. Akakpo Jan 2016

Value-At-Risk (Var) Estimation With Extreme Mixture Model And Backtesting Diagnostics, Rexford M. Akakpo

Graduate Research Theses & Dissertations

Value at Risk (VaR) is an important measure used to quantify the level of risk in investments over specied time frame. There are various ways to estimate VaR which including Extreme Value Theory (EVT). This research uses a special kind of extreme value mixture distributions (EVMD). Extreme value mixture models are tted to daily returns from four stock indices, S&P, Euroxx, FSTE100 and Nikkei. VaR was estimated for each index and Kupiec proportion of failure test was used to test for model adequacy.

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Validity Of Whole And Regional Body Composition Testing Devices, Alexa R. Suida Jan 2016

Validity Of Whole And Regional Body Composition Testing Devices, Alexa R. Suida

Graduate Research Theses & Dissertations

Obesity has been established as a risk factor for multiple diseases and is an increasing problem throughout the world. Advances in technology have enabled health professionals to use many devices to diagnose individuals as healthy, overweight, or obese. However, there are discrepancies between the validity of the devices. PURPOSE: The purpose of this study is to validate InBody 520 and InBody S10 against the Hologic dual-energy X-ray absorptiometry (DXA) system. METHODS: 50 male and female subjects performed body composition testing on an InBody 520, InBody S10, and a Hologic DXA, followed by repeat measurements on the InBody 520 and S10. …

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