• Phase transitions, elastic and electronic properties of hydrogen storage Na2PdH4 

  Al, Selgin; Kürkçü, Cihan (American Institute of Physics Inc., 2021)

  Hydrogen can be absorbed by some materials at specific pressures and temperatures. This is extremely important in terms of creating carbon-free and sustainable society. In this work hydrides are good candidates to fulfill ...

• Hydrogen storage properties, structural analysis, elastic and electronic properties of K2PdH4 

  Al, Selgin; Kürkçü, Cihan (AIP Publishing, 2021)

  Density functional theory is adopted to study phase transitions and structural, elastic, and electronic properties of hydrogen storage K2PdH4. First, the structural evolution of K2PdH4 is investigated under high pressure ...

• Dual-Band Patch Antenna with Simple Rectangular Shaped Slots for Local Area Networks 

  Türkmen, Mustafa; Güneş, Yakup Emre; Hakanoğlu, Barış Gürcan; Yalduz, Hüsnü; Sen, Osman (Springer, 2022)

  In this study, a coplanar waveguide fed patch antenna is proposed for Wireless Local Area Network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) operations. To obtain multiband functionality and tune ...

• Investigation of mechanical properties of KCaH3 and KSrH3 orthorhombic perovskite hydrides under high pressure for hydrogen storage applications 

  Kürkçü, Cihan; Al, Selgin; Yamcicier, Çağatay (Springer Science and Business Media Deutschland GmbH, 2022)

  First principles calculations have been adopted to explore ground-state and high-pressure properties of KCaH3 and KSrH3 orthorhombic perovskite hydrides for the purpose of solid-state hydrogen storage. Formation enthalpies ...

• Ab-initio study of structural, electronic, elastic, phonon properties, and phase transition path of sodium selenite 

  Kürkçü, Cihan; Al, Selgin; Yamcicier, Cagatay (Elsevier B.V., 2020)

  The effects of pressure on structural, elastic, electronic, and vibrational properties of NaSe are studied using the SIESTA method. The dimensionless ratio, bulk modulus, elastic constants, Shear and Young modulus, and ...

• Structural evolution, mechanical, electronic and vibrational properties of high capacity hydrogen storage TiH4 

  Al, Selgin; Kürkçü, Cihan; Yamcicier, Çağatay (Elsevier Ltd, 2020)

  Titanium tetra hydride is considered for hydrogen storage purposes. Firstly, formation energy, hydrogen desorption temperature and gravimetric hydrogen density of TiH4 is computed. Secondly, an ab initio constant pressure ...

• Comparison of theoretical and experimental electronic and optoelectronic properties of HPS compound 

  Şaş, Emine Babür; Tanış, Emine; Gündüz, Bayram; Kurt, Mustafa (Institute of Physics Publishing, 2019)

  We investigated electronic and optoelectronic properties of 1,1,2,3,4,5-Hexaphenyl-1H-silole (HPS) compound for different concentrations and for theoretical (B3LYP and CAM) and experimental methods. Optical parameters such ...

• Optimal power flow using artificial bee colony, wind driven optimization and gravitational search algorithms 

  Ermis, Salih; Yeşilbudak, Mehmet; Bayindir, Ramazan (Institute of Electrical and Electronics Engineers Inc., 2019)

  In this study, artificial bee colony, wind driven optimization and gravitational search algorithms are employed in order to solve the optimal power flow problem. The proposed optimization approaches are tested on the ...

• A study of structural, electronic, elastic, phonon properties, and transition mechanism of wurtzite CdTe under high pressure 

  Yamcicier, Cagatay; Kürkçü, Cihan; Merdan, Ziya (Elsevier, 2020)

  Ab initio computational methods based on density functional theory to study the structural, electronic, elastic and phonon properties of Cadmium Telluride (CdTe) were applied. SIESTA method was used for calculations with ...

• Phonem-based isolated Turkish word recognition with subspace classifier [Altuzay siniflama ile sesbirim temelli türkçe yalitik kelime tanima] 

  Keser S.; Edizkan R. (2009)

  In this study, phoneme-based isolated Turkish word recognition with Common Vector Approach (CVA) has been performed. CVA has been used to classify phonemes. The phoneme sequence obtained from the classfication is decoded ...

• Peak point detection of phase-to-phase effective voltages for smart grids: A comparative study 

  Colak A.M.; Shibota Y.; Kurokawa F.; Yesilbudak M.; Ermis S.; Bayindir R. (Institute of Electrical and Electronics Engineers Inc., 2017)

  Smart grid systems include many different power sources such as renewable and fossil energy basis. While collecting all type of energy on the grid, phase order, frequency, maximum voltage value and synchronization time of ...

• Standards-based investigation of voltage dips and voltage imbalances in an organized industrial zone 

  Bayindir R.; Yesilbudak M.; Ermis S. (Institute of Electrical and Electronics Engineers Inc., 2016)

  The measurement, monitoring and evaluation of power quality have a great importance for avoiding grid- and device-based problems in the stages of generation, transmission, distribution and consumption of electrical energy. ...

• Phonem-Based Isolated Turkish Word Recognition With Subspace Classifier 

  Keser, Serkan; Edizkan, Rifat (IEEE, 2009)

  In this studs,, phoneme-based isolated Turkish word recognition with Common Vector Approach (CVA) has been performed. CVA has been used to classify phonemes. The phoneme sequence obtained from the classification is decoded ...

• Standards-Based Investigation of Voltage Dips and Voltage Imbalances in an Organized Industrial Zone 

  Bayindir, Ramazan; Yesilbudak, Mehmet; Ermis, Salih (IEEE, 2016)

  The measurement, monitoring and evaluation of power quality have a great importance for avoiding grid- and device-based problems in the stages of generation, transmission, distribution and consumption of electrical energy. ...

• Investigation of the Effects of FACTS Devices on the Voltage Stability of Power Systems 

  Yesilbudak, Mehmet; Ermis, Salih; Bayindir, Ramazan (IEEE, 2017)

  In parallel with the technological advances, the electrical power demand is constantly increasing and this makes the voltage stability difficult for the electrical power systems. At this point, FACTS (Flexible AC Transmission ...

• Density-functional tight-binding approach for the structural analysis and electronic structure of copper hydride metallic nanoparticles 

  Kurban H.; Kurban M.; Dalkılıç M. (Elsevier Ltd, 2019)

  We perform a theoretical investigation using the density functional tight-binding (DFTB) approach for the structural analysis and electronic structure of copper hydride (CuH) metallic nanoparticles (NPs) of different size ...

• Structural, electronic, elastic and vibrational properties of two dimensional graphene-like BN under high pressure 

  Kürkçü C.; Yamçıçıer Ç. (Elsevier Ltd, 2019)

  The structural, electronic, elastic and vibrational properties of boron nitride (BN) were analyzed using ab initio computational methods based on density functional theory. The exchange-correlation energy functional was ...

• Physical and optical properties of DCJTB dye for OLED display applications: Experimental and theoretical investigation 

  Kurban, Mustafa; Gunduz, Bayram (ELSEVIER, 2017)

  In this study, 4-(dicyanomethylene)-2-tert-butyl-6-(1,1,7,7-tetramethyljulolidin-4-yl-vinyl)-4H-pyran (DCJTB) was achieved using the experimental and theoretical studies. The electronic, optical and spectroscopic properties ...

• Bent Fiber Sensor for Preservative Detection in Milk 

  Saracoglu, Omer Galip; Hayber, Sekip Esat (MDPI AG, 2016)

  A fiber optic sensor sensitive to refractive index changes of the outer region of the fiber cladding is presented. The sensor uses bent plastic optical fibers in different bending lengths to increase sensitivity. Measurements ...

• A subspace based progressive coding method for speech compression 

  Keser, Serkan; Gerek, Omer Nezih; Seke, Erol; Gillmezoglu, Mehmet Bilginer (ELSEVIER SCIENCE BV, 2017)

  In this study, two novel methods, which are based on Karhunen Loeve Transform (KLT) and Independent Component Analysis (ICA), are proposed for coding of speech signals. Instead of immediately dealing with eigenvalue ...

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