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Articles 3151 - 3180 of 5277

Full-Text Articles in Computer Sciences

Wind Farm Based On Dfig Entirely Interfaced With 14-Node Distribution Network: Power Control And Voltage Regulation, Babouri Rabah, Aouchenni Ounissa, Aouzellag Djamal, Ghedamsi Kaci Jan 2016

Wind Farm Based On Dfig Entirely Interfaced With 14-Node Distribution Network: Power Control And Voltage Regulation, Babouri Rabah, Aouchenni Ounissa, Aouzellag Djamal, Ghedamsi Kaci

Turkish Journal of Electrical Engineering and Computer Sciences

power quality problems due to the fluctuating nature of the wind and the increasing complexity of the power system. This paper describes a novel approach to voltage and power control of a radial electrical distribution network, using a wind farm. The wind farm consists of seven 75 kW induction generators (DFIG) supplying two AC/DC converters. The feed structure of the DFIG allows operating the system conversion in a wide range of speed variations. That is why it is a recommended solution, due to its capacity to increase the generator power to twice its nominal power; consequently, the system's size and …


Single And Multiple Precision Sequential Large Multipliers For Field-Programmable Gate Arrays, Ali̇ Şentürk, Mustafa Gök Jan 2016

Single And Multiple Precision Sequential Large Multipliers For Field-Programmable Gate Arrays, Ali̇ Şentürk, Mustafa Gök

Turkish Journal of Electrical Engineering and Computer Sciences

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A Location Aware History-Based Approach For Network Selection In Heterogeneous Wireless Networks, Amir Hossein Jafari, Hadi Shahriar Shahhoseini Jan 2016

A Location Aware History-Based Approach For Network Selection In Heterogeneous Wireless Networks, Amir Hossein Jafari, Hadi Shahriar Shahhoseini

Turkish Journal of Electrical Engineering and Computer Sciences

Efficient decision making in vertical handoff and network selection algorithms improves users' quality of service and helps users meet service requirements, anywhere and at any time. Hence, in this paper, a user-centric network selection algorithm is proposed, utilizing the estimated reputation of the available candidate networks based on user location and combined experienced users' utility. User utility is defined based on 1) quality of service, 2) monetary cost, and 3) energy consumption metrics. In the proposed history aware-based user location algorithm, the past experience of users for available networks is considered to estimate the future utility that a user can …


Winding Temperature Prediction In Split-Winding Traction Transformer, Davood Azizian Jan 2016

Winding Temperature Prediction In Split-Winding Traction Transformer, Davood Azizian

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


An Efficient Robust Watermarking Scheme For Varying Sized Blocks, Navneet Yadav, Kulbir Singh Jan 2016

An Efficient Robust Watermarking Scheme For Varying Sized Blocks, Navneet Yadav, Kulbir Singh

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Optimal Dispatchable Dg Allocation In A Distribution Network Considering Load Growth With A Mixed-Pso Algorithm, Peyman Karimyan, Behrooz Vahidi, Mehrdad Abedi, Seyed Mohammad Ahadi Jan 2016

Optimal Dispatchable Dg Allocation In A Distribution Network Considering Load Growth With A Mixed-Pso Algorithm, Peyman Karimyan, Behrooz Vahidi, Mehrdad Abedi, Seyed Mohammad Ahadi

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


A Wavelet-Based Feature Set For Recognizing Pulse Repetition Interval Modulation Patterns, Kenan Gençol, Nuray At, Ali̇ Kara Jan 2016

A Wavelet-Based Feature Set For Recognizing Pulse Repetition Interval Modulation Patterns, Kenan Gençol, Nuray At, Ali̇ Kara

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Implementation Of A Modified Svpwm-Based Three-Phase Inverter With Reduced Switches Using A Single Dc Source For A Grid-Connected Pv System, Venkatesan Mani, Rajeswari Ramachandran, Deverajan Nanjundappan Jan 2016

Implementation Of A Modified Svpwm-Based Three-Phase Inverter With Reduced Switches Using A Single Dc Source For A Grid-Connected Pv System, Venkatesan Mani, Rajeswari Ramachandran, Deverajan Nanjundappan

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


A Novel Method Of Relieving Congestion In Hybrid Deregulated Market Utilizing Renewable Energy Sources, Joseph Jeslin Drusila Nesamalar, Paramasivam Venkatesh, Sathiasamuel Charles Raja Jan 2016

A Novel Method Of Relieving Congestion In Hybrid Deregulated Market Utilizing Renewable Energy Sources, Joseph Jeslin Drusila Nesamalar, Paramasivam Venkatesh, Sathiasamuel Charles Raja

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Power System Harmonic Reduction And Voltage Control Using Dfig Converters As An Active Filter, Seyyed Mostafa Nosratabadi, Eskandar Gholipour Jan 2016

Power System Harmonic Reduction And Voltage Control Using Dfig Converters As An Active Filter, Seyyed Mostafa Nosratabadi, Eskandar Gholipour

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Enhanced Control Of A Dfig-Based System By Sliding-Mode Control Method During Network Disturbances, Saeed Abazari, Sajad Farajzadeh, Samad Taghipour Boroujeni Jan 2016

Enhanced Control Of A Dfig-Based System By Sliding-Mode Control Method During Network Disturbances, Saeed Abazari, Sajad Farajzadeh, Samad Taghipour Boroujeni

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


A Novel Approach For Automatic Blood Vessel Extraction In Retinal Images: Complex Ripplet-I Transform And Complex Valued Artificial Neural Network, Murat Ceylan, Hüseyi̇n Yaşar Jan 2016

A Novel Approach For Automatic Blood Vessel Extraction In Retinal Images: Complex Ripplet-I Transform And Complex Valued Artificial Neural Network, Murat Ceylan, Hüseyi̇n Yaşar

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


A New Combined Method For Rms Calculation Based On Wavelet Packet And Hilbert Transform, Rahmat Allah Hooshmand, Javad Modarresi Jan 2016

A New Combined Method For Rms Calculation Based On Wavelet Packet And Hilbert Transform, Rahmat Allah Hooshmand, Javad Modarresi

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Design And Implementation Of Small Power Switched Reluctance Generator-Based Wind Energy Conversion System, Jayapragash Rasakannu, Chellamuthu Chinnagounder Jan 2016

Design And Implementation Of Small Power Switched Reluctance Generator-Based Wind Energy Conversion System, Jayapragash Rasakannu, Chellamuthu Chinnagounder

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Bbo Algorithm-Based Tuning Of Pid Controller For Speed Control Of Synchronous Machine, Gowrishankar Kasilingam, Jagadeesh Pasupuleti Jan 2016

Bbo Algorithm-Based Tuning Of Pid Controller For Speed Control Of Synchronous Machine, Gowrishankar Kasilingam, Jagadeesh Pasupuleti

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Threshold Optimization According To The Restricted Bayes Criterion In Decentralized Detection Problems, Suat Bayram, Hakan Soku Jan 2016

Threshold Optimization According To The Restricted Bayes Criterion In Decentralized Detection Problems, Suat Bayram, Hakan Soku

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Evolutionary Optimized Discrete Tchebichef Moments For Image Compression Applications, Ragamathunisa Begum Abdul Hameed, Manimegalai Duraisamy, Abudhahir Ameerbasha, Baskar Subramanian Jan 2016

Evolutionary Optimized Discrete Tchebichef Moments For Image Compression Applications, Ragamathunisa Begum Abdul Hameed, Manimegalai Duraisamy, Abudhahir Ameerbasha, Baskar Subramanian

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


Thermal Model Of Oil Power Transformers With A Tap Changer, Zoran Radakovic, Stefan Tenbohlen Jan 2016

Thermal Model Of Oil Power Transformers With A Tap Changer, Zoran Radakovic, Stefan Tenbohlen

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


A New Electronically Tunable First-Order All-Pass Filter Using Only Three Nmos Transistors And A Capacitor, Firat Yücel, Erkan Yuce Jan 2016

A New Electronically Tunable First-Order All-Pass Filter Using Only Three Nmos Transistors And A Capacitor, Firat Yücel, Erkan Yuce

Turkish Journal of Electrical Engineering and Computer Sciences

No abstract provided.


A Designed Converter For Minimizing Srm Torque Ripple With Controlled Boost Capacitor Automatically, Loghman Samani, Mahdi Abdolhamidi, Amir Rashidi, Sayed Morteza Saghaiannezhad Jan 2016

A Designed Converter For Minimizing Srm Torque Ripple With Controlled Boost Capacitor Automatically, Loghman Samani, Mahdi Abdolhamidi, Amir Rashidi, Sayed Morteza Saghaiannezhad

Turkish Journal of Electrical Engineering and Computer Sciences

Direct instantaneous torque control (DITC) is one way of controlling torque in switched reluctance motors. Despite the presence of DITC control, torque ripple at nominal or higher speeds is considerable due to the back emf increasing. To overcome this drawback, many converters have been proposed. In most convertors proposed for fast excitation in DITC, controlling of boost capacity is an important problem. This paper presents a DITC for a switched reluctance motor using a proposed converter to reduce the torque ripple with controlled boost capacitor automatically. The proposed converter reduces the torque ripple at rated or higher speeds and no …


Design Of Low Power System On Programmable Chip For Video Zoom-In Processing, Lamjed Touil, Lilia Keciche, Bouraoui Ouni, Abdellatif Mtibaa Jan 2016

Design Of Low Power System On Programmable Chip For Video Zoom-In Processing, Lamjed Touil, Lilia Keciche, Bouraoui Ouni, Abdellatif Mtibaa

Turkish Journal of Electrical Engineering and Computer Sciences

Today, power consumption presents a critical issue when designing embedded systems. It has become a key factor in a product's success when being marketed, especially for mobile systems. In this paper, we have developed a typical design for video zoom-in processing with low power consumption. The proposed design has been implemented on the Xilinx Virtex-5 with the integration of different important resources like embedded processor, embedded memory, MPMC, DDR, and various interfaces. The design results show a significant gain in power at the simulation level as well as the physical one. In addition, the proposed design provides an important gain …


Parametric-Based Mobility For Providing Opportunistic Geocasting In Spatially Separated Wireless Sensor Networks, Selvi Ravindran, Narayanasamy Palanisamy, Vetriselvi Vetrian Jan 2016

Parametric-Based Mobility For Providing Opportunistic Geocasting In Spatially Separated Wireless Sensor Networks, Selvi Ravindran, Narayanasamy Palanisamy, Vetriselvi Vetrian

Turkish Journal of Electrical Engineering and Computer Sciences

Uneven deployment and environment constraint leads to the formation of a spatially separated wireless sensor network (SS-WSN). Most of the traditional WSN architectures consist of static nodes that are densely deployed over a sensing area and are fully connected. SS-WSN is a group of disjoint subnetworks where connectivity is generally maintained by energy rich mobile nodes (ERMN), which roam about from one subnetwork to another. We propose an algorithm whereby the mobility of ERMN helps in distributing the geo message opportunistically in the region of interest. The routing consists of two phases: (1) transmission of the geo message from the …


An Improved Digital Image Watermarking Scheme Using The Discrete Fourier Transform And Singular Value Decomposition, Justin Varghese, Saudia Subash, Omer Bin Hussain, Krishnan Nallaperumal, Mohammed Ramadan Saady, Mohamed Samiulla Khan Jan 2016

An Improved Digital Image Watermarking Scheme Using The Discrete Fourier Transform And Singular Value Decomposition, Justin Varghese, Saudia Subash, Omer Bin Hussain, Krishnan Nallaperumal, Mohammed Ramadan Saady, Mohamed Samiulla Khan

Turkish Journal of Electrical Engineering and Computer Sciences

The paper presents an improved digital image watermarking algorithm by incorporating the discrete Fourier transform (DFT) and singular value decomposition (SVD). The Fourier transformed carrier image is decomposed into four different frequency subbands by the proposed onion peel decomposition (OPD) algorithm and the SVD-based watermarking scheme is applied to attach the transformed watermark in all four carrier subbands. The proposed inverse OPD algorithm together with inverse DFT is utilized to reconstruct the watermarked image from the frequency blocks. The watermark extraction algorithm is simple and it performs the inverse of watermarking process. The experimental analysis on different images shows that …


Push-Pull Cache Consistency Mechanism For Cooperative Caching In Mobile Ad Hoc Environments, Lilly Sheeba Selvin, Yogesh Palanichamy Jan 2016

Push-Pull Cache Consistency Mechanism For Cooperative Caching In Mobile Ad Hoc Environments, Lilly Sheeba Selvin, Yogesh Palanichamy

Turkish Journal of Electrical Engineering and Computer Sciences

Maintaining data consistency between data cached by a mobile client and data residing in the data server is a major issue in a wireless mobile environment. In this paper, we propose a push-pull cache consistency (2P2C) mechanism, with the intention of increasing the rate of serving requestors with recent up-to-date information or data from the cache of the intermediate nodes that are exact replicas of the data present in the origin server. This is a hybrid scheme that does not rely entirely either on the server or on the mobile client for maintaining consistency. Here we employ a registration process. …


A Model For Flipping Electrical Engineering With E-Learning Using A Multidimensional Approach, Dursun Akaslan, Effie Lai-Chong Law Jan 2016

A Model For Flipping Electrical Engineering With E-Learning Using A Multidimensional Approach, Dursun Akaslan, Effie Lai-Chong Law

Turkish Journal of Electrical Engineering and Computer Sciences

This paper proposes a model for supporting electrical engineering with e-learning. The model development is based on survey data collected from representative teachers and students studying in higher education institutions in Turkey. To develop the model, the study investigated the attitudes of the representative key stakeholders in the relevant higher education institutions towards e-learning by administrating questionnaires and interviews with teachers and students. The responses of the teachers and students were then compared. Based on the results, a model was proposed with a multidimensional approach to e-learning. The model flips electrical engineering to make sure that the students review, discuss, …


Design And Implementation Of A Compact Avionics Instrument For Light Aviation, Mustafa Emre Aydemi̇r Jan 2016

Design And Implementation Of A Compact Avionics Instrument For Light Aviation, Mustafa Emre Aydemi̇r

Turkish Journal of Electrical Engineering and Computer Sciences

In this study, a low-cost compact avionics instrument has been designed and implemented for light aviation vehicles such as ultralight airplanes, hang glider-trikes, and paramotors. At the moment there are a few commercial products that provide flight data and vehicle statuses such as altitude, temperature, fuel level, and engine hours meter. However, due to low production rates, customization for different air vehicles, and complex electronics and signal processing hardware, these instruments are generally far from being affordable; their cost may even be more than that of the air vehicle. This study presents a novel approach such that recent state-of-the-art hardware …


Energy-Efficient Mobile Cluster-Head Data Collection Model For Wireless Sensor Networks, Nidhi Gautam, Sanjeev Sofat, Renu Vig Jan 2016

Energy-Efficient Mobile Cluster-Head Data Collection Model For Wireless Sensor Networks, Nidhi Gautam, Sanjeev Sofat, Renu Vig

Turkish Journal of Electrical Engineering and Computer Sciences

Wireless sensor networks have grown from homogeneous network architecture to heterogeneous networks for the improvement of network efficiency and lifetime. This paper exhibits a mobile cluster-head data collection (MCHDC) model for heterogeneous wireless networks. The MCHDC model illustrates the mobility pattern of mobile cluster-head nodes in a controlled environment with uniform and nonuniform deployment of mobile elements in the area of observation. It focuses on the threshold velocity for movement of mobile elements in the network area. In this paper the effects of data sending rate, network area, sensor node density, and cluster-head node density on energy efficiency of the …


Behavior Of Metamaterial-Based Microwave Components For Sensing And Heating Of Nanoliter-Scale Volumes, Muhammed Sai̇d Boybay Jan 2016

Behavior Of Metamaterial-Based Microwave Components For Sensing And Heating Of Nanoliter-Scale Volumes, Muhammed Sai̇d Boybay

Turkish Journal of Electrical Engineering and Computer Sciences

Metamaterial-based microwave components are among the state-of-the-art heater and sensor designs for microfluidic systems. The miniaturization and energy-focusing abilities of the metamaterial-based components make it possible to adopt microwave components operating at wavelengths in the order of 10 cm for microfluidic systems. Microwave systems are particularly advantageous for point-of-care and high-throughput applications due to their high speed of operation, very low instrumentation cost, ability to selectively and internally heat specimens, and ability of label-free sensing. In this study, the efficiency and behavior of microwave components designed for heating and sensing small volumes in the scale of nanoliters are studied. In …


Experimental Characterization Of Wafer Probe Burn, Baha Zafer, Bahadir Tunaboylu Jan 2016

Experimental Characterization Of Wafer Probe Burn, Baha Zafer, Bahadir Tunaboylu

Turkish Journal of Electrical Engineering and Computer Sciences

The probing test is a typical quality control method for individual chips on a wafer. This study investigates the cantilever wafer probe current carrying capacity along a probe body in order to model the probe burn phenomenon by using experimental techniques and numerical simulation. The standard measurement approach used in the test industry is conducted to define the mechanical degradation of the cantilever probe on the wafer card and temperature distribution along the probe body is conducted using a conduction heat transfer equation via computational discretization. Maximum current carrying capacity is defined and the probe burn phenomenon is observed at …


A Dynamic Spectrum Management Algorithm In Vdsl Systems, Sunil Sharma, Om Parkash Sahu Jan 2016

A Dynamic Spectrum Management Algorithm In Vdsl Systems, Sunil Sharma, Om Parkash Sahu

Turkish Journal of Electrical Engineering and Computer Sciences

A modified iterative water-filling algorithm is proposed in which power from only those subcarriers of the near end user are reduced, which has the worst effect on bit rates of far end users. The power back off from these subcarriers is done by reducing power spectral masks at respective subcarriers. The results after simulating the proposed algorithm give significant performance advantages in terms of data rate over the traditional iterative water-filling algorithm. These results approach the performance of highly complex optimal spectrum management algorithms while maintaining the complexity of the traditional iterative water-filling algorithm.