Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Turkey (129)
- 1 (99)
- 2 (83)
- Classification (75)
- Deep learning (75)
-
- Machine learning (72)
- Optimization (69)
- Genetic algorithm (62)
- Synthesis (62)
- Adsorption (58)
- Geochemistry (55)
- Particle swarm optimization (53)
- Antimicrobial activity (47)
- 3 (45)
- Artificial neural network (42)
- Stability (40)
- Support vector machine (37)
- Phthalocyanine (36)
- Antibacterial activity (35)
- Feature extraction (33)
- Artificial neural networks (32)
- Feature selection (31)
- Wireless sensor networks (31)
- Molecular docking (30)
- Cytotoxicity (29)
- Copper (28)
- DFT (28)
- Oscillation (28)
- Power quality (28)
- COVID-19 (27)
- Publication Year
Articles 2071 - 2100 of 12093
Full-Text Articles in Entire DC Network
Investigation Of Strain Accumulation Along Tuzla Fault - Western Turkey, Emre Havazli, Haluk Özener
Investigation Of Strain Accumulation Along Tuzla Fault - Western Turkey, Emre Havazli, Haluk Özener
Turkish Journal of Earth Sciences
The Aegean region is one of the most seismically active regions in Turkey and comprises the Hellenic Arc, Greece, and Western Turkey. The Tuzla Fault, which lies between the town of Menderes and Cape Doğanbey, is one of the major seismic threats in western Turkey due to its seismic potential to generate a major earthquake (M 6, near Doğanbey Cape in 1992) and proximity to the city of İzmir which sustained damage due to the earthquake that occurred in the Aegean Sea on October 30th, 2020. In order to estimate strain rates and seismic potential around the Tuzla Fault, five …
A Numerical Approach To Verify The Reservoir Temperature Of The Afyon Geothermal Fields, Turkey, Özgür Karaoğlu
A Numerical Approach To Verify The Reservoir Temperature Of The Afyon Geothermal Fields, Turkey, Özgür Karaoğlu
Turkish Journal of Earth Sciences
Geothermal energy constitutes an important renewable resource in Turkey that has been extensively utilized for heating buildings, power generation, greenhouse farming and various other industries. One of the most remarkable geothermal locations in Turkey is the low-enthalpy area of Afyon, where five main low-temperature (30-110 °C) geothermal fields are exploited. However, further exploration drilling sites have proven inconclusive, casting doubts on the effective presence of high-temperature geothermal systems in the region. Part of the challenge is that the geometry, size and depth of the heat source of the geothermal system is poorly constrained. It is documented that the Afyon region …
Basin Margin Tectonics And Morphology As Controls Of Delta Type And Architecture: Examples From The Mio-Pliocene Yalvaç Basin (Sw Turkey), Ayhan Ilgar, Ali̇ Ergen, Ercan Tuncay, Alper Bozkurt
Basin Margin Tectonics And Morphology As Controls Of Delta Type And Architecture: Examples From The Mio-Pliocene Yalvaç Basin (Sw Turkey), Ayhan Ilgar, Ali̇ Ergen, Ercan Tuncay, Alper Bozkurt
Turkish Journal of Earth Sciences
This study describes the sedimentary facies and depositional architectures of Gilbert-type and shoal-water delta deposits developed on opposed margins of the extensional fluvio-lacustrine Yalvaç Basin during the late Cenozoic. The roles of syndepositional tectonism, basin dynamics, and hinterland morphology on the development of different delta types are assessed. This asymmetric trough initially opened as an intramontane molasse basin to the southwest of the Sultandağları massif. Its northern and southern margins are bounded by normal faults, which controlled both tectono-sedimentary evolution of the basin and the surrounding palaeomorphology. The lacustrine deposits consist of thin-bedded limestones, marls, and medium to thick-bedded sandstones …
The Multidisciplinary Approaches On Facies Developments And Depositional Systems Of The Bahçecik Travertines, Gümüşhane, Ne-Turkey, Rai̇f Kandemi̇r, Ezher Tagli̇asacchi̇, Mi̇ne Sezgül Kayseri̇ Özer, Di̇lek Şaffak, Fati̇h Köroğlu, Hsun-Ming Hu, Chuan-Chou Shen
The Multidisciplinary Approaches On Facies Developments And Depositional Systems Of The Bahçecik Travertines, Gümüşhane, Ne-Turkey, Rai̇f Kandemi̇r, Ezher Tagli̇asacchi̇, Mi̇ne Sezgül Kayseri̇ Özer, Di̇lek Şaffak, Fati̇h Köroğlu, Hsun-Ming Hu, Chuan-Chou Shen
Turkish Journal of Earth Sciences
The Bahçecik travertines, located in Gümüşhane (NE-Turkey) have been investigated for the first time using a multidisciplinary approach, which included sedimentological (lithofacies, depositional system), petrographic, radiometric 230Th dating, geochemical analysis (stable isotopes), palynomorphs and geophysics (GPR). A carbonate build-up, 12 m thick, was formed with some interruptions, through the middle Pleistocene period. For this study, two travertine sections (F and D) were extensively used to figure out palaeoenvironmental and palaeoclimatic proxies. The main precipitation cycles, separated by palaeosol levels, have been described and interpreted from a sedimentological perspective. The carbonate deposits consist of shrubs, crystalline crust, reed, laminated (micritic), pisoids, …
High-Resolution Temperature And Precipitation Variability Of Southwest Anatolia Since 1730 Ce From Lake Gölcük Sedimentary Records, Iliya Bauchi Danladi, Sena Akçer Ön, Zeki̇ Bora Ön, Sabine Schmidt
High-Resolution Temperature And Precipitation Variability Of Southwest Anatolia Since 1730 Ce From Lake Gölcük Sedimentary Records, Iliya Bauchi Danladi, Sena Akçer Ön, Zeki̇ Bora Ön, Sabine Schmidt
Turkish Journal of Earth Sciences
We report high-resolution multiproxy analyses [lithology, μXRF and magnetic susceptibility (MS)] of two short gravity sediment cores from the crater Lake Gölcük, southwest Turkey. Our results provide a detailed hydroclimatic record for the last ~290 years. Aided with factor analysis of μXRF data and 210210Pb and 137Cs dating, our multiproxy data show that the Lake Gölcük records documented a series of wet and dry periods between ~ 1730 (±71) and ~ 2018 (±3) CE. Wet periods are evidenced by dark olive green mixed lithology (sandy, clay, and silts) and high values in MS and log(Sr/Ca). On the other hand, dry …
Finite Volume Modeling Of Bathymetry And Fault-Controlled Fluid Circulation In The Sea Of Marmara, Eli̇f Şen, Doğa Doğan
Finite Volume Modeling Of Bathymetry And Fault-Controlled Fluid Circulation In The Sea Of Marmara, Eli̇f Şen, Doğa Doğan
Turkish Journal of Earth Sciences
Fluid vents in the Sea of Marmara were discovered and investigated by several studies. In this paper, a numerical model is created for the first time to determine the possible transport mechanism behind those fluid emissions at the seafloor. The finite volume method is used for numerical simulations by implementing a commercial finite volume code, ANSYS-Fluent. The thermal and physical rock properties used in our models are taken from previous studies. Bathymetry, fault-controlled fluid flow velocities, and temperature distribution patterns for the Central Basin and Western High in the Sea of Marmara are simulated and presented. Effects of faults, thickness …
Simulation Of Seismic Triggering And Failure Time Perturbations Associated With The 30 October 2020 Samos Earthquake (Mw 7.0), Eyüp Sopaci, Ati̇lla Arda Özacar
Simulation Of Seismic Triggering And Failure Time Perturbations Associated With The 30 October 2020 Samos Earthquake (Mw 7.0), Eyüp Sopaci, Ati̇lla Arda Özacar
Turkish Journal of Earth Sciences
The 30 October 2020 Samos earthquake (Mw = 7.0) ruptured a north-dipping offshore normal fault north of the Samos Island with an extensional mechanism. Aftershocks mainly occurred at the western and eastern ends of the rupture plane in agreement with the Coulomb static stress changes. Mechanism of aftershocks located west of the rupture supported activation of the neighboring strike-slip fault almost instantly. In addition, a seismic cluster including events with Mw~4 has emerged two days later at the SE side of Samos Island. This off-plane cluster displays a clear example of delayed seismic triggering at nearby active faults. In this …
Combined Qualitative And Quantitative Regional Interpretation Of The Thermal Results Of Magnetic Data In The Eastern Mediterranean Region, İlki̇n Özsöz
Turkish Journal of Earth Sciences
The study presents thermal structure and active-passive tectonic parts of the Eastern Mediterranean Region. Curie point depth, heat flow map, Moho depth and sediment thickness are used for interpretation. The levelled magnetic data that obtained from the World Digital Magnetic Anomaly Map (WDMAM) is used. The magnetic anomaly is divided into 39 zones for Curie point depth estimation. The Curie point depth values are calculated into Fourier domain. Then heat flow map is generated. The estimated Curie point depth values are ranging from 4.5 km to 25 km. Furthermore, heat flow values are between 55 mW/m2 and 277 mW/m2. Moho …
Long-Term Spatiotemporal Evolution Of Land Subsidence In Konya Metropolitan Area (Turkey) Based On Multisensor Sar Data, Nurdan Şi̇reci̇, Gökhan Aslan, Zi̇yadi̇n Çakir
Long-Term Spatiotemporal Evolution Of Land Subsidence In Konya Metropolitan Area (Turkey) Based On Multisensor Sar Data, Nurdan Şi̇reci̇, Gökhan Aslan, Zi̇yadi̇n Çakir
Turkish Journal of Earth Sciences
We have studied the spatiotemporal evolution of surface deformation in Konya city and its vicinity using advanced multitemporal synthetic aperture radar techniques with SAR data acquired by Envisat, ALOS-1, and Sentinel-1 A/B satellites between 2004 and 2020. Velocity maps and time series show that the city has been subsiding with varying rates in space and time since 2004. The pattern of deformation shows two main lobes of subsidence centered in the western and eastern sides of the city with a nondeforming north-south trending narrow zone in between. Subsidence rate increases from a few cm/yr to 11 cm/yr between 2014 and …
Geology, Mineralogy, And Geochemistry Of The Zarloukh Bentonite -Tuff Deposit,Hemrin South Mountain, Northern Iraq: Implications For Genesis And Geotectonics, Yawooz Kettanah
Turkish Journal of Earth Sciences
The Quaternary Zarloukh Bentonite -Tuff (ZBT) deposit occurs within the Hemrin South Mountain, northern Iraq. The ZBT deposit occurs as depression-filling exposed on the erosional surface of the siliciclastic Pliocene Muqdadiya Formation and covered by an overburden of recent sediments. The thickness of the studied industrial bentonite bed is ~80-100 cm, occurring at the bottom of these depressions, covered by ~3-4 m thick bedded volcanic tuff, which also contains many 10-12 cm thick bentonite layers along its bedding planes. The volcanic ash at the bottom of lakes/swamps with shallow water content acted as basins for the deposition of falling volcanic …
Generation Of Collision-Induced Early To Middle Miocene Adakitic Magmas In Pertek(Tunceli) Area From Eastern Anatolia Postsubductional Setting, Turkey, Sevcan Kürüm, Hakan Çoban, Pinar Aydin
Generation Of Collision-Induced Early To Middle Miocene Adakitic Magmas In Pertek(Tunceli) Area From Eastern Anatolia Postsubductional Setting, Turkey, Sevcan Kürüm, Hakan Çoban, Pinar Aydin
Turkish Journal of Earth Sciences
Early to Middle Miocene andesite-dacite porphyries are well exposed to the Pertek area of Tunceli, Eastern Anatolia, and represent an example of adakite-like magma generation in Eastern Anatolia (postsubductional) collisional setting. Mineral associations in these porphyries are composed of plagioclase (oligoclase-andesine-labradorite), amphibole (pargasite-ferropargasite), biotite, rare quartz, K-feldspar, and minor Fe-Ti oxides. Geochemically they are high-K calc-alkaline in nature and characterized by high SiO2 (>62 wt.%), Al2O3 (mostly >16 wt.%), Na2O/K2O ratio (1.3-1.7), and Sr (generally >400 ppm) contents. Volcanic rocks display depletion in HFSEs, Nb, Ta, and Ti, and slight negative Eu anomaly; have low HREEs, Y (
Impacts Of The 2020 Samos Earthquake On The Modeling Of Ancient Seismic Events, Stathis Stiros
Impacts Of The 2020 Samos Earthquake On The Modeling Of Ancient Seismic Events, Stathis Stiros
Turkish Journal of Earth Sciences
The 2020 Samos, M7.0 earthquake was characterized by an unusual bi-modal-type distribution of damage: limited damage in the nearfield (especially northern Samos coast) and serious localized damage in multi-story buildings in the far field (İzmir area). This pattern is not consistent with the typical distribution of isoseismal lines, and it seems not to represent an isolated effect; the 2014 Samothraki- Gökçeada M6.9 earthquake, for example, may in fact represent a parallel, though at smaller scale. For this reason, the damage pattern of the Samos earthquake may characterize historical earthquakes in the wider region, and perhaps explain, among others, some apparently …
Gps Derived Finite Source Mechanism Of The 30 October 2020 Samos Earthquake, Mw =6.9, In The Aegean Extensional Region, Bahadir Aktuğ, İbrahi̇m Ti̇ryaki̇oğlu, Hasan Sözbi̇li̇r, Haluk Özener, Çağlar Özkaymak, Cemal Özer Yi̇ği̇t, Hali̇l İbrahi̇m Solak, Eda Esma Eyübagi̇l, Bengi̇su Geli̇n, Orhan Tatar, Mustafa Softa
Gps Derived Finite Source Mechanism Of The 30 October 2020 Samos Earthquake, Mw =6.9, In The Aegean Extensional Region, Bahadir Aktuğ, İbrahi̇m Ti̇ryaki̇oğlu, Hasan Sözbi̇li̇r, Haluk Özener, Çağlar Özkaymak, Cemal Özer Yi̇ği̇t, Hali̇l İbrahi̇m Solak, Eda Esma Eyübagi̇l, Bengi̇su Geli̇n, Orhan Tatar, Mustafa Softa
Turkish Journal of Earth Sciences
A submarine area close to the Turkish and Greek border between the cities of Samos-Greece and Seferihisar-Turkey has been shaked on October 30, 2020 by a Mw= 6.9 earthquake. In this study, the finite source mechanism of the Samos earthquake was investigated using geodetic methods and the coseismic behavior of the earthquake was modeled. The observed coseismic displacements at 62 sites were inverted for the fault geometry and the slips. The mainshock did not generate an on-land surface rupture. However, the uniform slip modeling shows a finite source of 43.1 km long and 16 km wide rupture, which slips 1.42 …
Updated Historical Earthquake Catalog Of İzmir Region (Western Anatolia) And Itsimportance For The Determination Of Seismogenic Source, Çi̇ğdem Tepe, Hasan Sözbi̇li̇r, Semi̇h Eski̇, Ökmen Sümer, Çağlar Özkaymak
Updated Historical Earthquake Catalog Of İzmir Region (Western Anatolia) And Itsimportance For The Determination Of Seismogenic Source, Çi̇ğdem Tepe, Hasan Sözbi̇li̇r, Semi̇h Eski̇, Ökmen Sümer, Çağlar Özkaymak
Turkish Journal of Earth Sciences
Although destructive earthquakes have not occurred in the instrumental period except for the 30 October 2020 Samos earthquake (Mw = 6.6), the records show that there were significant earthquakes that caused great destruction in İzmir and its surroundings in the historical period. However, it is not yet clear which faults are causative for these earthquakes affecting İzmir and its surroundings. For this purpose, it has been attempted to determine new geological, seismological and environmental data by examining a large number of original sources, records and old international earthquake catalogs, other than the existing national catalogs used in seismicity studies in …
Tsunami Hazard, Warning, And Risk Reduction In Italy And The Mediterranean Sea: State Of The Art, Gaps, And Future Solutions, Stefano Lorito, Alessandro Amato, Lorenzo Cugliari, Fabrizio Romano, Roberto Tonini, Cecilia Valbonesi, Manuela Volpe
Tsunami Hazard, Warning, And Risk Reduction In Italy And The Mediterranean Sea: State Of The Art, Gaps, And Future Solutions, Stefano Lorito, Alessandro Amato, Lorenzo Cugliari, Fabrizio Romano, Roberto Tonini, Cecilia Valbonesi, Manuela Volpe
Turkish Journal of Earth Sciences
Historical catalogues show evidence for about 300 tsunamis in European coastal waters since 1600 BC, and tsunami hazard models like the NEAMTHM18 provide the probability of future inundation from earthquake-induced tsunamis. A recent wake-up call came from the 2020 Mw7.0 Samos-İzmir earthquake and the following moderate, damaging tsunami. Five accredited Tsunami Service Providers (TSPs) run by IPMA (Portugal), CENALT (France), INGV (Italy), NOA (Greece), and KOERI (Turkey), and several national centers monitor the seismicity and provide tsunami alerts in the framework of the UNESCO Tsunami Early Warning and Mitigation System in the North-eastern Atlantic, the Mediterranean and connected seas (NEAMTWS). …
Paleoseismic History Of The Manisa Fault Zone, Western Anatolia, İsmai̇l Duran, Hasan Sözbi̇li̇r, Semi̇h Eski̇, Mustafa Softa, Hüseyi̇n Uytun, Mehmet Yüksel, Mustafa Topaksu
Paleoseismic History Of The Manisa Fault Zone, Western Anatolia, İsmai̇l Duran, Hasan Sözbi̇li̇r, Semi̇h Eski̇, Mustafa Softa, Hüseyi̇n Uytun, Mehmet Yüksel, Mustafa Topaksu
Turkish Journal of Earth Sciences
The 45-km-long, E-W to NW-SE-striking Manisa Fault Zone, which constitutes the western section of the Gediz Graben, is characterized by a pure normal sense of motion with a minor strike-slip component. Even though there are numerous historical earthquakes have been listed in Western Anatolia Graben System, a few studies have been addressed on seismic sources of the earthquakes so far. According to existing literature, the western segment of the Manisa Fault Zone is well known characterized; however, the eastern segment of it has rarely been addressed. To decipher the Holocene seismotectonic behavior of the eastern segment of Manisa Fault Zone, …
Surface Heat Flow In Western Anatolia (Turkey) And Implications To The Thermal Structureof The Gediz Graben, Eli̇f Pazvantoğlu, Kami̇l Erkan, Müjgan Şalk, Bülent Oktay Akkoyunlu, Mete Tayanç
Surface Heat Flow In Western Anatolia (Turkey) And Implications To The Thermal Structureof The Gediz Graben, Eli̇f Pazvantoğlu, Kami̇l Erkan, Müjgan Şalk, Bülent Oktay Akkoyunlu, Mete Tayanç
Turkish Journal of Earth Sciences
Knowledge of heat flow density on the Earth's surface and subsurface temperature distribution is essential for the interpretation of several processes in the crust such as for the evaluation of the geothermal potential of a region. With this study, we investigate the conductive heat flow distribution in western Anatolia to understand the thermal state and its relationship to regional tectonics in the region. The new heat flow data are collected and combined with previously published data to obtain the new heat flow map of western Anatolia. Analysis of data sets after appropriate corrections yields a better picture of the regional …
Evaluation Of Powdery Mildew Resistance Of A Diverse Set Of Grape Cultivars And Testing The Association Between Powdery Mildew Resistance And Pr Gene Expression, Si̇nem Demi̇rel Aşci, Serpi̇l Tangolar, Kemal Kazan, Canan Yüksel Özmen, Mert Öktem, Umut Ki̇bar, Muhammad Mujtaba, Semi̇h Tangolar, Ali̇ Ergül
Evaluation Of Powdery Mildew Resistance Of A Diverse Set Of Grape Cultivars And Testing The Association Between Powdery Mildew Resistance And Pr Gene Expression, Si̇nem Demi̇rel Aşci, Serpi̇l Tangolar, Kemal Kazan, Canan Yüksel Özmen, Mert Öktem, Umut Ki̇bar, Muhammad Mujtaba, Semi̇h Tangolar, Ali̇ Ergül
Turkish Journal of Agriculture and Forestry
Powdery mildew caused by the fungal pathogen Erysiphe necator is a global disease that reduces yield and quality in grapes (Vitis vinifera L.). Most grape cultivars are susceptible to this pathogen and thus the selection of powdery mildew resistant cultivars is a major objective of grape breeding programs. In this study, we evaluated powdery mildew resistance of a diverse set of 28 commonly cultivated local and international V. Vinifera cultivars after artificial inoculations with Erysiphe necator. Of these, 7 cultivars were found to be resistant while 10 and 11, were found to be moderately resistant and susceptible to powdery mildew, …
Magnetic Resonance Imaging Histogram Analysis Of Corpus Callosum In A Functionalneurological Disorder, Sema Baykara, Murat Baykara, Osman Mermi̇, Hanefi̇ Yildirim, Murad Atmaca
Magnetic Resonance Imaging Histogram Analysis Of Corpus Callosum In A Functionalneurological Disorder, Sema Baykara, Murat Baykara, Osman Mermi̇, Hanefi̇ Yildirim, Murad Atmaca
Turkish Journal of Medical Sciences
Background/aim: The aim of the present study was to examine and compare the corpus callosum (CC) via histogram analysis (HA) on T1-weighted MR images of patients diagnosed with Functional Neurological Disorder (FND) and healthy controls. Materials and methods: The study group included 19 female patients diagnosed with FND, and the control group included 20 healthy subjects. All participants were scanned with a 1.5 T MR scanner. A high-resolution structural image of the entire brain was obtained with sagittal 3D spiral fast spin echo T1-weighted images. Gray level intensity, standard deviation of the histogram, entropy, uniformity, skewness, and kurtosis values were …
Selected Properties Of Briquettes Made From Blends Of Bamboo And Beech Biomass, Aurel Lunguleasa, Nadi̇r Ayrilmiş, Daniela Sova, Cosmin Spirchez
Selected Properties Of Briquettes Made From Blends Of Bamboo And Beech Biomass, Aurel Lunguleasa, Nadi̇r Ayrilmiş, Daniela Sova, Cosmin Spirchez
Turkish Journal of Agriculture and Forestry
This study reported the experimental analysis on wood briquettes manufactured from Moso bamboo (Phyllostachys pubescens) and beech wood (Fagus sylvatica), regarded as an economically valuable fuel source. The following properties of briquettes: physical properties (density and moisture content); chemical properties (heating value, namely calorific value, and ash content); thermal properties (thermal conductivity and specific heat); and mechanical properties (breaking strength). These properties allowed the assessment of the efficiency of two species for using them in briquette manufacturing. The briquettes with higher fractions of bamboo wood showed enhanced characteristics as compared to the briquettes made of beech. This can be explained …
Speed-Sensorless Predictive Torque Controlled Induction Motor Drive Withfeed-Forward Control Of Load Torque For Electric Vehicle Applications, Emrah Zerdali̇, Ridvan Demi̇r
Speed-Sensorless Predictive Torque Controlled Induction Motor Drive Withfeed-Forward Control Of Load Torque For Electric Vehicle Applications, Emrah Zerdali̇, Ridvan Demi̇r
Turkish Journal of Electrical Engineering and Computer Sciences
Nowadays, the global trend is towards reducing CO2 emissions and one solution is to replace internal combustion vehicles with electric vehicles. To this end, electric drive system, the most crucial part of an electric vehicle, has gained importance and has become a major research field. The induction motor (IM) is one of the best candidates for electric vehicle applications due to its advantages such as having simple and robust design, its low cost maintenance requirements and the ability to operate in harsh environments. However, it has a highly nonlinear model with timevarying electrical and mechanical parameters making them difficult to …
Optimal Coordination Of Directional Overcurrent Relay Based On Combination Ofimproved Particle Swarm Optimization And Linear Programming Consideringmultiple Characteristics Curve, Suzana Pil Ramli, Hazlie Mokhlis, Wei Ru Wong, Munir Azam Muhammad, Nurulafiqah Nadzirah Mansor, Muhamad Hatta Hussain
Optimal Coordination Of Directional Overcurrent Relay Based On Combination Ofimproved Particle Swarm Optimization And Linear Programming Consideringmultiple Characteristics Curve, Suzana Pil Ramli, Hazlie Mokhlis, Wei Ru Wong, Munir Azam Muhammad, Nurulafiqah Nadzirah Mansor, Muhamad Hatta Hussain
Turkish Journal of Electrical Engineering and Computer Sciences
Optimal coordination of directional over-current relays (DOCRs) is a crucial task in ensuring the security and reliability of power system network. In this paper, a hybridization of an improved particle swarm optimization and linear programming (IPSO-LP) is proposed to solve DOCRs coordination problem. The considered decision variables in the optimization are plug setting current, time multiplier setting, type of relay, and type of curve. By considering these parameters in the optimization, the best relay operating time can be determined. Furthermore, the proposed technique also considered the continuous values of pick-up current setting (PSC) and time setting multiplier (TMS). Test on …
Fpga Implementation Of Lsd-Omp For Real-Time Ecg Signal Reconstruction, Önder Polat, Sema Kayhan
Fpga Implementation Of Lsd-Omp For Real-Time Ecg Signal Reconstruction, Önder Polat, Sema Kayhan
Turkish Journal of Electrical Engineering and Computer Sciences
Compressed sensing is widely used to compress electrocardiogram (ECG) signals, but the major challenges of the compressed sensing algorithms are their highly complex signal reconstruction processes. In this paper, a reconfigurable high-speed and low-power field-programmable gate array (FPGA) implementation of the least support denoising-orthogonal matching pursuit (LSD-OMP) algorithm for the real-time reconstruction of the ECG signals is presented. The contribution of this study is two-fold: Firstly, LSD-OMP can pick more than one element at each iteration and reconstruct the sparse signal using less number of iterations as compared to the standard OMP algorithms. Latency of the proposed design is therefore …
A Novel Hybrid Decision-Based Filter And Universal Edge-Based Logical Smoothingadd-On To Remove Impulsive Noise, Rajanbir Singh Ghumaan, Prateek Jeet Singh Sohi, Nikhil Sharma, Bharat Garg
A Novel Hybrid Decision-Based Filter And Universal Edge-Based Logical Smoothingadd-On To Remove Impulsive Noise, Rajanbir Singh Ghumaan, Prateek Jeet Singh Sohi, Nikhil Sharma, Bharat Garg
Turkish Journal of Electrical Engineering and Computer Sciences
This paper presents a novel hybrid filter along with a universal extension to remove salt and pepper noise even at a very high noise density. The proposed filter initially specifies a threshold and then denoises the image using a combination of linear, nonlinear, and probabilistic techniques. Furthermore, to improve the quality, a universal add-on is presented which uses edge detection and smoothening techniques to brush out fine details from the restored image. To evaluate the efficacy, the proposed and existing filtering techniques are implemented in MATLAB and simulated with benchmark images. The simulation results show that the proposed filter is …
An Enhanced Bandwidth Disturbance Observer Based Control- S-Filter Approach, Mehmet Önder Efe, Coşku Kasnakoğlu
An Enhanced Bandwidth Disturbance Observer Based Control- S-Filter Approach, Mehmet Önder Efe, Coşku Kasnakoğlu
Turkish Journal of Electrical Engineering and Computer Sciences
A continuous time enhanced bandwidth disturbance observer based control (DOBC) scheme is proposed in this paper. The classical Q -filter is implemented in feedback form and a signum function is inserted into the loop. The loop with this modification becomes capable of detecting small magnitude matched disturbances and we present an in depth discussion of the stability and performance issues comparatively. The proposed approach is called S-filter approach and the results outperform the classical approach under certain conditions. The contribution of the current paper is to advance the subject area to nonlinear filters for DOBC loops with guaranteed stability and …
A Linear Programming Approach To Multiple Instance Learning, Emel Şeyma Küçükaşci, Mustafa Gökçe Baydoğan, Zeki̇ Caner Taşkin
A Linear Programming Approach To Multiple Instance Learning, Emel Şeyma Küçükaşci, Mustafa Gökçe Baydoğan, Zeki̇ Caner Taşkin
Turkish Journal of Electrical Engineering and Computer Sciences
Multiple instance learning (MIL) aims to classify objects with complex structures and covers a wide range of real-world data mining applications. In MIL, objects are represented by a bag of instances instead of a single instance, and class labels are provided only for the bags. Some of the earlier MIL methods focus on solving MIL problem under the standard MIL assumption, which requires at least one positive instance in positive bags and all remaining instances are negative. This study proposes a linear programming framework to learn instance level contributions to bag label without emposing the standart assumption. Each instance of …
Towards An Ontology-Based Approach To The "New Normality" After Covid-19:The Spanish Case During Pandemic First Wave, Evelio Gonzalez
Towards An Ontology-Based Approach To The "New Normality" After Covid-19:The Spanish Case During Pandemic First Wave, Evelio Gonzalez
Turkish Journal of Electrical Engineering and Computer Sciences
The impact of the pandemic caused by COVID-19 has been immense in all fields of human activity. In most of the affected countries, the authorities have decreed a series of legal measures to try to stop the growth of the disease and the number of people affected by it. These legal measures involved, in most cases, restrictions on the free movement of people and on work and trade activities, new hygiene procedures, and social distancing. In the particular case of Spain, the rapid evolution of the pandemic led to the declaration of a so-called state of alarm and a period …
A 1-Kw Wireless Power Transfer System For Electric Vehicle Charging Withhexagonal Flat Spiral Coil, Emrullah Aydin, Mehmet Ti̇mur Aydemi̇r
A 1-Kw Wireless Power Transfer System For Electric Vehicle Charging Withhexagonal Flat Spiral Coil, Emrullah Aydin, Mehmet Ti̇mur Aydemi̇r
Turkish Journal of Electrical Engineering and Computer Sciences
Wireless power transfer (WPT) technology is getting more attention in these days as a clean, safe, and easy alternative to charging batteries in several power levels. Different coil types and system structures have been proposed in the literature. Hexagonal coils, which have a common usage for low power applications, have not been well studied for high and mid power applications such as in electric vehicle (EV) battery charging. In order to fill this knowledge gap, the self and mutual inductance equations of a hexagonal coil are obtained, and these equations have been used to design a 1 kW WPT system …
A New Classification Method For Encrypted Internet Traffic Using Machine Learning, Mesut Uğurlu, İbrahi̇m Alper Doğru, Recep Si̇nan Arslan
A New Classification Method For Encrypted Internet Traffic Using Machine Learning, Mesut Uğurlu, İbrahi̇m Alper Doğru, Recep Si̇nan Arslan
Turkish Journal of Electrical Engineering and Computer Sciences
The rate of internet usage in the world is over 62% and this rate is increasing day by day. With this increase, it becomes important to ensure the confidentiality of the information in the traffic flowing over the internet. Encryption algorithms and protocols are used for this purpose. This situation, which is beneficial for normal users, is also used by attackers to hide. Cyber attackers or hackers gain the ability to bypass security precautions such as IDS/IPS and antivirus systems with using encrypted traffic. Since payload analysis cannot be performed without deciphering the encrypted traffic, existing commercial security solutions fall …
Design Development And Performance Analysis Of Distributed Least Square Twinsupport Vector Machine For Binary Classification, Bakshi Rohit Prasad, Sonali Agarwal
Design Development And Performance Analysis Of Distributed Least Square Twinsupport Vector Machine For Binary Classification, Bakshi Rohit Prasad, Sonali Agarwal
Turkish Journal of Electrical Engineering and Computer Sciences
Machine learning (ML) on Big Data has gone beyond the capacity of traditional machines and technologies. ML for large scale datasets is the current focus of researchers. Most of the ML algorithms primarily suffer from memory constraints, complex computation, and scalability issues.The least square twin support vector machine (LSTSVM) technique is an extended version of support vector machine (SVM). It is much faster as compared to SVM and is widely used for classification tasks. However, when applied to large scale datasets having millions or billions of samples and/or large number of classes, it causes computational and storage bottlenecks. This paper …