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Articles 98251 - 98280 of 103646
Full-Text Articles in Entire DC Network
Attachment Styles, Social Skills, And Depression In College Women, Eileen L. Cooley, Amy Van Buren, Steven P. Cole
Attachment Styles, Social Skills, And Depression In College Women, Eileen L. Cooley, Amy Van Buren, Steven P. Cole
Psychology Faculty Publications
Attachment styles, social skills, and depression were studied in 93 college women using the Relationship Questionnaire (K. Bartholomew & L M. Horowitz, 1991), the Beck Depression Inventory-ll (AT. Beck, R.A. Steer, & G. K. Brown, 1996), and the Interpersonal Competence Questionnaire (D. Buhrmester,W. Furman, M.T.Wittenberg, & H.T. Reis, 1988).The self and other attachment models and the social skills of negative assertion, self-disclosure, and conflict management all correlated with depression. Conflict management partially mediated the relationship between attachment self-model and depression. Implications for counseling are discussed.
Differential Power Analysis Resistant Hardware Implementation Of The Rsa Cryptosystem, Kekli̇k Alpteki̇n Bayam, Berna Örs
Differential Power Analysis Resistant Hardware Implementation Of The Rsa Cryptosystem, Kekli̇k Alpteki̇n Bayam, Berna Örs
Turkish Journal of Electrical Engineering and Computer Sciences
In this paper, RSA cryptosystem was implemented on hardware, then modified to be resistant against Differential Power Analysis attacks by using the Randomized Table Window method. This is the first FPGA realization of an algorithmic countermeasure which makes RSA resistant to power analysis attacks. Modular exponentiation is realized with Montgomery Modular Multiplication. The Montgomery modular multiplier has been realized with Carry-Save Adders. Carry-Save representation has been used throughout the RSA encryption algorithm. The primarily implemented RSA architecture prevents the extraction of the secret key using Simple Power Analysis attacks. When comparing the protected implementation with the unprotected, it can be …
Cover And Contents
Turkish Journal of Electrical Engineering and Computer Sciences
No abstract provided.
Experimental Studies Of A Scaled-Down Tsr-Based Svc And Tcr-Based Svc Prototype For Voltage Regulation And Compensation, Ayetül Gelen, Tankut Yalçinöz
Experimental Studies Of A Scaled-Down Tsr-Based Svc And Tcr-Based Svc Prototype For Voltage Regulation And Compensation, Ayetül Gelen, Tankut Yalçinöz
Turkish Journal of Electrical Engineering and Computer Sciences
In this paper, prototypes of two shunt flexible AC transmission system (FACTS) devices, a thyristor switched reactor (TSR)-based static VAr compensator (SVC) and a thyristor controlled reactor (TCR)-based static VAr compensator- have been developed. The design and testing of both a TSR-based SVC and a TCR-based SVC are accomplished in the Power Systems Research Laboratory of Nigde University. The TSR-based SVC and TCR-based SVC devices are studied in three-bus and single machine infinite bus systems for three-phase static load conditions. The effects of TSR-based SVC and TCR-based SVC devices on load voltages are also analyzed. Experimental results show that significant …
An Rfid Based Indoor Tracking Method For Navigating Visually Impaired People, Ruşen Öktem, Eli̇f Aydin
An Rfid Based Indoor Tracking Method For Navigating Visually Impaired People, Ruşen Öktem, Eli̇f Aydin
Turkish Journal of Electrical Engineering and Computer Sciences
This paper tackles the RFID based tracking problem in an obscured indoor environment. The proposed solution is an integral part of a navigation aid for guiding visually impaired people in a store. It uses RF signal strengths and is based on the Bayes Decision Theory. An observation vector is formed by received radio signal strength indication values, transmitted from three transmitters at distinct frequencies in the UHF band. The indoor area is divided into square grids, where each grid is considered as a class. The problem of tracking is expressed as classifying the observed radio signal strengths to the most …
Oceanography Radar System Wera: Features, Accuracy, Reliability And Limitations, Thomas Helzel, Matthias Kniephoff, Leif Petersen
Oceanography Radar System Wera: Features, Accuracy, Reliability And Limitations, Thomas Helzel, Matthias Kniephoff, Leif Petersen
Turkish Journal of Electrical Engineering and Computer Sciences
The WERA system (WavE RAdar) is a shore based remote sensing system to monitor ocean surface currents, waves and wind direction. This long range, high resolution monitoring system based on short radio wave radar technology. The vertical polarised electromagnetic wave is coupled to the conductive ocean surface and follows the curvature of the earth. This over the horizon oceanography radar can pick up back-scattered signals from the rough ocean surface (Bragg effect) from ranges of up to 200 km. The physical background, technical concept and environmental boundary conditions are explained. Results for various installations from all over the world demonstrates …
Modeling And Simulation Strategies In High Frequency Surface Wave Radars, Levent Sevgi̇
Modeling And Simulation Strategies In High Frequency Surface Wave Radars, Levent Sevgi̇
Turkish Journal of Electrical Engineering and Computer Sciences
Surface Wave High Frequency Radars (SWHFR) are taken into account in the content of modeling and simulation challenges. Examples related to multi-mixed path surface wave propagation, radar cross section (RCS) prediction, and total radar echo showing target, clutter, noise, and interference are presented.
Implementation Of Method For Operating Multiple High Frequency Surface Wave Radars On A Common Carrier Frequency, Ryan Riddolls
Implementation Of Method For Operating Multiple High Frequency Surface Wave Radars On A Common Carrier Frequency, Ryan Riddolls
Turkish Journal of Electrical Engineering and Computer Sciences
The increasing use of High Frequency Surface Wave Radar (HFSWR) for the surveillance of coastal regions is faced with the problem of limited channel availability in the electromagnetic spectrum. Thus, there is a need for multiple radars to share a common frequency channel. Proof-of-concept work is presented here for a method to operate multiple radar systems on a common carrier frequency. A review is provided of an existing concept where a common waveform is modulated by tones varying by a few hertz across the different radars. The signals from the different radars are separated by either pulse-domain filtering or Doppler …
Securing Fuzzy Vault Schemes Through Biometric Hashing, Cengi̇z Örenci̇k, Thomas Brochmann Pedersen, Erkay Savaş, Mehmet Keski̇nöz
Securing Fuzzy Vault Schemes Through Biometric Hashing, Cengi̇z Örenci̇k, Thomas Brochmann Pedersen, Erkay Savaş, Mehmet Keski̇nöz
Turkish Journal of Electrical Engineering and Computer Sciences
The fuzzy vault scheme is a well-known technique to mitigate privacy, security, and usability related problems in biometric identification applications. The basic idea is to hide biometric data along with secret information amongst randomly selected chaff points during the enrollment process. Only the owner of the biometric data who presents correct biometrics can recover the secret and identify himself. Recent research, however, has shown that the scheme is vulnerable to certain types of attacks. The recently proposed ``correlation attack'', that allows linking two vaults of the same biometric, pose serious privacy risks that have not been sufficiently addressed. The primary …
Corrective Action Planning Considering Facts Allocation And Optimal Load Shedding Using Bacterial Foraging Oriented By Particle Swarm Optimization Algorithm, Rahmat Allah Hooshmand, Mostafa Ezatabadi
Corrective Action Planning Considering Facts Allocation And Optimal Load Shedding Using Bacterial Foraging Oriented By Particle Swarm Optimization Algorithm, Rahmat Allah Hooshmand, Mostafa Ezatabadi
Turkish Journal of Electrical Engineering and Computer Sciences
Reactive power planning (RPP) involves optimal allocation and determination of the type and size of new reactive power (VAR) supplies to satisfy voltage constraints during normal and contingency states. The RPP issue is in fact an optimization of large scale mixed integer nonlinear programming problem, so it is proper to use an evolutionary algorithm to solve the problem. In this paper, in order to solve the RPP problem for corrective action of power systems, the bacterial foraging (BF) oriented by particle swarm optimization (PSO) algorithm (BF-PSO) is proposed. In the algorithm, the VAR control has been carried out by using …
Adaptive Neuro-Fuzzy Inference System To Improve The Power Quality Of Variable-Speed Wind Power Generation System, Yüksel Oğuz, Kami̇l Ri̇fat İrfan Güney
Adaptive Neuro-Fuzzy Inference System To Improve The Power Quality Of Variable-Speed Wind Power Generation System, Yüksel Oğuz, Kami̇l Ri̇fat İrfan Güney
Turkish Journal of Electrical Engineering and Computer Sciences
In this study, an adaptive neuro-fuzzy inference system is designed for output voltage and frequency control of a variable-speed wind power generation system. Variable-speed wind power generation systems (VSWPGS) provide the opportunity to capture more power than fixed speed turbines. On the other hand, the variable-speed wind turbine output can be variable voltage and variable frequency for fluctuating wind speeds. The quality of output power can be improved if adequate controls are incorporated in the system. To bring the output voltage and frequency of system by means of control of blade pitch angle of wind turbine to a desirable value, …
The Analysis Of A Semiconductor Single Asymmetric And Symmetric Step-Index Laser For Even And Odd Fields By Alpha Method, Mustafa Temi̇z, Mehmet Ünal
The Analysis Of A Semiconductor Single Asymmetric And Symmetric Step-Index Laser For Even And Odd Fields By Alpha Method, Mustafa Temi̇z, Mehmet Ünal
Turkish Journal of Electrical Engineering and Computer Sciences
In this work, semiconductor step-index single waveguide has been analyzed by Alpha Method. A requested quantity of wave guide can be obtained in terms of normalized propagation constant, which is represented by alpha belonging to active region. Based on this method, structural properties of the material containing any requested quantity of the waveguide is theoretically calculated, when the width of the active region, the refractive indices of the regions and the wavelength are given. In the TE mode some important parameters, such as the propagation constants for regions of the semiconductor step-index single waveguide, the wave numbers, the effective index …
Fractional Order Sliding Mode Control With Reaching Law Approach, Mehmet Önder Efe
Fractional Order Sliding Mode Control With Reaching Law Approach, Mehmet Önder Efe
Turkish Journal of Electrical Engineering and Computer Sciences
Fractional order sliding mode control is studied in this paper. The control objectives are achieved by adopting the reaching law approach of sliding mode control. The main contribution of this work is to show that the philosophy of integer order sliding mode control is valid also for the systems represented by fractional order operators. A sufficient condition and its implications for stability are given. Matched and unmatched uncertainties are studied. The attractor nature of the switching manifold is analyzed together with a stable sliding subspace design condition. The claims are justified through a set of simulations and the results obtained …
A Novel Algorithm For Sensorless Motion Control Of Flexible Structures, Islam Shoukry Mohammed Khalil, Emrah Deni̇z Kunt, Asif Sabanovic
A Novel Algorithm For Sensorless Motion Control Of Flexible Structures, Islam Shoukry Mohammed Khalil, Emrah Deni̇z Kunt, Asif Sabanovic
Turkish Journal of Electrical Engineering and Computer Sciences
This article demonstrates the validity of using an actuator as a single platform for measurements during a motion control assignment of flexible systems kept free from any kind of measurement. System acceleration level dynamics, parameters and interaction forces with the environment are coupled in an incident reaction torque that naturally rises when a flexible system is subjected to an action imposed by an attached actuator to the system. This work attempts to decouple each of the system parameters out of the incident coupled reaction torque at the interface point of the actuator with the flexible system by way of measurements …
Modeling And Control Of Flow Problems By Adaptation-Based Linear Parameter Varying Models, Coşku Kasnakoğlu
Modeling And Control Of Flow Problems By Adaptation-Based Linear Parameter Varying Models, Coşku Kasnakoğlu
Turkish Journal of Electrical Engineering and Computer Sciences
In this paper a systematic modeling and control approach for flow problems is considered. A nonlinear Galerkin model is obtained from the partial differential equations (PDEs) describing the flow; and a Linear Parameter Varying (LPV) model is constructed to approximate the Galerkin model, where the parameter variation of the LPV model is controller by an adaptation mechanism. The LPV model is then treated as a surrogate on which the control design is carried out, where the parameter variations provide a range of uncertainty in which the control design must perform satisfactorily. It is shown that if certain conditions are met, …
Experimental Investigation Of Shaft Transducerless Speed And Position Control Of Ac Induction And Interior Permanent Magnet Motors, Ömer Göksu, Ahmet Masum Hava
Experimental Investigation Of Shaft Transducerless Speed And Position Control Of Ac Induction And Interior Permanent Magnet Motors, Ömer Göksu, Ahmet Masum Hava
Turkish Journal of Electrical Engineering and Computer Sciences
In order to drive AC motors with high efficiency and high motion performance, and to provide accurate speed/position control, motor shaft speed and/or position feedback is required. For this purpose, usually transducers (encoder, tachogenerator, resolver, etc.) are installed on the shaft. However, transducers are not preferred in most of the applications since they increase the cost and decrease the reliability of the drive due to their failure prone structure and connections. In such applications, the speed and/or position information of the motor is obtained by estimation methods without using shaft transducers. In this work, motor types and speed/position estimation methods …
Direct Discrete-Time Control Of Port Controlled Hamiltonian Systems, Yaprak Yalçin, Leyla Gören Sümer
Direct Discrete-Time Control Of Port Controlled Hamiltonian Systems, Yaprak Yalçin, Leyla Gören Sümer
Turkish Journal of Electrical Engineering and Computer Sciences
The direct discrete time control of Port Controlled Hamiltonian Systems (PCHS) in the sense of energy shaping and damping injection is considered. In order to give a direct discrete time design method for PCHS, firstly an appropriate discrete gradient is proposed, which enables the derivation of a discrete time equation corresponding to the discrete time counterpart of Hamiltonian Systems. Using this proposed discrete-time model, the discrete-time counterpart of Passivity Based Control (PBC) technique is developed for n-degrees-of-freedom mechanical systems. The discrete-time control rules which correspond to the energy shaping and damping assignment are obtained directly using the discrete time model …
The Use Of Fpga In Field-Oriented Control Of An Induction Machine, Özkan Akin, İrfan Alan
The Use Of Fpga In Field-Oriented Control Of An Induction Machine, Özkan Akin, İrfan Alan
Turkish Journal of Electrical Engineering and Computer Sciences
In this study, the feasibility of embedding the field oriented control (FOC) of an induction machine into field programmable gate arrays (FPGA) is investigated. An indirect FOC of an induction machine is simulated in a Matlab Simulink environment using a Xilinx System Generator implemented in a Xilinx Spartan-3 XC3S200 FPGA board. Design of the developed controller for the induction machine is simulated via a Simulink full digital platform. The resulting design has a flexible and modular structure where the designer can customize the hardware blocks by changing the number of inputs, outputs, and algorithm when it is compared to the …
Fuzzy Adaptive Neural Network Approach To Path Loss Prediction In Urban Areas At Gsm-900 Band, Türkan Erbay Dalkiliç, Berna Yeşi̇m Hanci, Ayşen Apaydin
Fuzzy Adaptive Neural Network Approach To Path Loss Prediction In Urban Areas At Gsm-900 Band, Türkan Erbay Dalkiliç, Berna Yeşi̇m Hanci, Ayşen Apaydin
Turkish Journal of Electrical Engineering and Computer Sciences
This paper presents the results of the Adaptive-Network Based Fuzzy Inference System (ANFIS) for the prediction of path loss in a specific urban environment. A new algorithm based ANFIS for tuning the path loss model is introduced in this work. The performance of the path loss model which is obtained from proposed algorithm is compared to the Bertoni-Walfisch model, which is one of the best studied for propagation analysis involving buildings. This comparison is based on the mean square error between predicted and measured values. According to the indicated error criterion, the errors related to the predictions that are obtained …
Behaviors Of Real-Time Schedulers Under Resource Modification And A Steady Scheme With Bounded Utilization, Refi̇k Samet, Orhan Fi̇kret Duman
Behaviors Of Real-Time Schedulers Under Resource Modification And A Steady Scheme With Bounded Utilization, Refi̇k Samet, Orhan Fi̇kret Duman
Turkish Journal of Electrical Engineering and Computer Sciences
In this article we present an analysis for task models having random resource needs and different arrival patterns. In hard real-time environments like avionic systems or nuclear reactors, the inputs to the system are obtained from real world by using sensors. And it is highly possible for a task to have different resource needs for each period according to these changing conditions of real world. We made an analysis of schedulers for task models having random resources in each period. Since feasibility tests for usual task models are just limited to some specific schedulers and arrival patterns, we made our …
The Missoula Poplar Project: Utilizing Poplars To Enhance Wastewater Treatment, Heath Nicolas Carey
The Missoula Poplar Project: Utilizing Poplars To Enhance Wastewater Treatment, Heath Nicolas Carey
Graduate Student Theses, Dissertations, & Professional Papers
Wastewater treatment plants rank second to agricultural runoff in the top ten major pollution sources to U.S. surface waters. Such nutrient-rich inputs can degrade aquatic ecosystems by accelerating eutrophication events, especially in summer months when surface water flows are low. Alternative treatment practices, modeled after natural ecosystem processes, could reduce nutrient inputs to surface waters while accumulating biomass and sequestering atmospheric carbon dioxide. I designed and implemented an alternative treatment strategy, using effluent to fertilize trees at the Missoula Wastewater Treatment Facility. The objectives of this work were to assess: 1) environmental impacts of effluent application; 2) tree survivorship; and …
The Skinny On Weight Watchers: A Critical Analysis Of Weight Watcher's Use Of Metaphors, Ashlynn Laura Reynolds-Dyk
The Skinny On Weight Watchers: A Critical Analysis Of Weight Watcher's Use Of Metaphors, Ashlynn Laura Reynolds-Dyk
Graduate Student Theses, Dissertations, & Professional Papers
Founded in 1961, with 1.5 million people from around the world attending meetings every week today, Weight Watchers has become a socially and economically significant weight loss organization with the potential to affect the lives of many people. With that in mind, this study describes and analyzes the rhetorical strategies of Weight Watchers. More specifically, this study depicts the metaphors used by Weight Watchers to describe its 2009 program, the Momentum Program. Which metaphors are used, how those metaphors function to create a reality for dieters, how those metaphors produce and filter meaning, and the actions those metaphors encourage and …
Stewardship In West African Vodun: A Case Study Of Ouidah, Benin, Hayden Thomas Janssen
Stewardship In West African Vodun: A Case Study Of Ouidah, Benin, Hayden Thomas Janssen
Graduate Student Theses, Dissertations, & Professional Papers
Indigenous, animistic religions inherently convey a close relationship and stewardship for the environment. This stewardship is very apparent in the region of southern Benin, Africa. The Fon peoples of this region practice a traditional religion termed Vodun, which manifested from the 17th century slave trade, and subsequently migrated to the Caribbean and Americas where it transmuted into Voodoo, among other religions. The migration of pre-colonial religious canon to the Western Hemisphere has garnered ample study; however, the pioneering religion, Vodun, has received far less scholastic attention, despite Benin’s recognition of Vodun as a national religion. In this thesis, I contend …
Subjective Experience And Psychological Effects Of Participating In Adventure Experiences: An Exploratory Study, Abby Marie Kiklevich
Subjective Experience And Psychological Effects Of Participating In Adventure Experiences: An Exploratory Study, Abby Marie Kiklevich
Graduate Student Theses, Dissertations, & Professional Papers
Adventure Experiences (AE) are used in many different types of treatment for adolescents. Two different models have been proposed to understand the different types of experiences individuals might have while participating in these activities: the Orthogonal Model of Flow (Csikszentmihalyi & Rathunde 1993) and the Adventure Experience Paradigm (Priest, 1992). This study combined these two models to assess the use of the psychological constructs of mindfulness and emotion regulation during the AE for individuals at different stages of the combined model. Participants were offered the opportunity to complete an AE consisting of a beginner–rated rock climb. Those who elected to …
The Biogeography Of Ageratina Adenophora: A Mexican Trans-Global Invader, Heather Marie Evans
The Biogeography Of Ageratina Adenophora: A Mexican Trans-Global Invader, Heather Marie Evans
Graduate Student Theses, Dissertations, & Professional Papers
Evans, Heather, Master of Science, May 2010 The Biogeography of Ageratina adenophora: A Mexican Trans-Global Invader Co-Chairman: Dr. Jeffrey Gritzner Co-Chairman: Dr. Ragan Callaway Invasive plants are a global problem often resulting in negative impacts upon populations of native plants and the environments in which they grow. Invasive plants inhibit native species and take over areas where they have been introduced. These invasive species create ecological problems for wildlife foraging, as they often transform the vegetation of native habitats resulting in conditions unsuitable for grazing. In addition, invasive plant species pose problems for humans in the areas of health, economics, …
The Discipline Of Identity: Examining The Challenges Of Developing Interdisciplinary Identities Within The Science Disciplines, Nicholas Richard Burk
The Discipline Of Identity: Examining The Challenges Of Developing Interdisciplinary Identities Within The Science Disciplines, Nicholas Richard Burk
Graduate Student Theses, Dissertations, & Professional Papers
Conducting scientific research that integrates multiple disciplines is an increasingly important, and yet challenging endeavor. This study employs the construct of identity to characterize and examine the obstacles to successful interdisciplinary work. It is argued that identity provides a useful lens into the process of scientific investigation, because as a construct, it has been shown to influence the way one sees oneself, others, and the practice of “good science.” It is therefore assumed that scientists’ identities may be an under-examined, mitigating factor in whether they develop an interest and aptitude for interdisciplinary collaboration. This study qualitatively examines 20 postgraduate students …
The Effct Of Low-Level Lead On Serotonin Expression In The Developing Mouse Superior Olivary Complex And Somatosensory Cortex, Sunyoung Park
The Effct Of Low-Level Lead On Serotonin Expression In The Developing Mouse Superior Olivary Complex And Somatosensory Cortex, Sunyoung Park
Graduate Student Theses, Dissertations, & Professional Papers
Low-level Pb exposure is a risk factor for neurobehavioral and cognitive deficits in both humans and animals. These neurological dysfunctions have been associated with deficits in auditory temporal processing. The developing central nervous system is particularly susceptible to Pb exposure, and Pb decreases the immunoreactivity of serotonin (5-HT) and VMAT2 in the lateral superior olive (LSO). During early developmental, "non-serotonergic" sensory neurons, including LSO neurons and thalamocortical neurons of the somatosensory system, transiently take up 5-HT from the extracellular environment through the transient expression of the serotonin reuptake transporter SERT. Maintenance of appropriate 5-HT levels is important for development of …
Recommendations For Instream Flow Rights On National Forest Lands In Montana, Andrew Marias Fischer
Recommendations For Instream Flow Rights On National Forest Lands In Montana, Andrew Marias Fischer
Graduate Student Theses, Dissertations, & Professional Papers
A unique opportunity exists to create instream water rights on national forest lands in Montana as a result of the US Forest Service Reserved Water Rights Compact between the US Forest Service (USFS) and the state of Montana, which went into law in 2007. Instream water rights on national forest lands are important because they have the potential to protect streamflows that support many vital ecosystem functions in our forests from water development pressures. Montana Trout Unlimited has an interest in advancing and accelerating this effort by providing stream recommendations to the USFS for the establishment of future water rights. …
Scale And Source Of Geospatial Data For Wildfire Risk Assessments: Comparing National Data With Local Data In The Deschutes National Forest, Julie Marie Gilbertson-Day
Scale And Source Of Geospatial Data For Wildfire Risk Assessments: Comparing National Data With Local Data In The Deschutes National Forest, Julie Marie Gilbertson-Day
Graduate Student Theses, Dissertations, & Professional Papers
Widespread use of geospatial data in environmental decision-making tools such as wildfire risk models has called attention to questions of availability, quality, and currency of input data layers. As wildfires are modeled with growing confidence and knowledge of how resources respond to fire is increasing, challenges must be addressed before geospatial data are acquired and used to represent resources of high value in wildfire risk assessments. Researchers at the Rocky Mountain Research Station and the Western Wildland Environmental Threat Assessment Center of the USDA Forest Service employ a framework for assessing wildfire risk to a range of human and ecological …
What's In A Name? The Feasibility And Desirability Of Naming Forced Marriage As A Separate Crime Under International Humanitarian Law, Krista Stout
Dalhousie Journal of Legal Studies
The phenomenon of forced marriages during armed conflict has recently garnered international attention, as it has become apparent that these coerced relationships are not mere happenstance, but are often the result of strategic planning on the part of armed groups and are thus an integral part of ongoing conflicts around the globe. The purpose of this paper, therefore, is to critically examine the phenomenon as it manifests itself in armed conflict situations, with a specific focus on Sierra Leone, and to unpack the various violations that occur under the guise of this pernicious labeling to see whether it is desirable …