• Working Principles of Convolutional Neural Networks in Keras 

  Akgun, Devrim (Platanus Publishing, 2023-12-25)
• Speech Recognition Using Deep Learning Model With Volterra Series-Based Layers in Tensorflow 

  Alyafawi, Z. , Akgun, D. (2022-12-29)

  The Volterra series is a mathematical tool widely used to analyze and model nonlinear systems. The Volterra model expands a nonlinear system's response in terms of a series of integral equations. Like linear convolution, ...
• A Literature Review on Smart Attendance Systems 

  Abdalkarim, Bawar Ali Abdalkarim; Akgün, Devrim (2022-07-20)

  Every institution that depends on people must account for its employees as a first step in the modern-day. As a result, creating and maintaining a suitable management system costs the different organizations a substantial ...
• Building segmentation with Inception-Unet and classical methods 

  Delibaşoğlu, İbrahim; Çetin, Müfit (IEEE, 2020-10-07)

  Remote sensing studies for automatic detection of buildings in urban areas have become important with the increase in spatial resolution of satellite images. Many classical image processing based methods have been proposed ...
• A Novel Hypogenetic Chaotic Jerk System: Modeling, Circuit Implementation, and Its Application 

  ; Jiancheng Liu; Karthikeyan Rajagopal; Tengfei Lei; Kaçar, Sezgin; Arıcıoğlu, Burak; Çavuşoğlu, Ünal; Kökçam, Abdullah Hulusi; Anitha Karthikeyan (HINDAWI LTD, 2020)

  When revising the polarity and amplitude information in the feedback, a unique hypogenetic jerk system was obtained which has two controllers to switch the equilibria between stable and unstable. After providing some basic ...
• Coarse Segmentation With GDD Clustering Using Color and Spatial Data 

  ; Emre Gungor; Özmen, Ahmet (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2020)

  Segmentation is a challenging and important task in image processing while developing vision based decision support systems. Color and brightness are widely used properties for extracting segments, however color information ...
• An exponential jerk system, its fractional-order form with dynamical analysis and engineering application 

  ; Karthikeyan Rajagopal; Akgül, Akif; Sajad Jafari; Anitha Karthikeyan; Çavuşoğlu, Ünal; Kaçar, Sezgin (SPRINGER, 2020)

  A simple jerk system with only one exponential nonlinearity is proposed and discussed. Dynamic analysis of the integer-order jerk system shows the existence of chaotic oscillations. A model for the fractional-order jerk ...
• GPU-Based Dynamic Solar Potential Estimation Tool Using 3D Plans 

  ; Kaynak, Sümeyye; Kaynak, Baran; Özmen, Ahmet (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2020)

  Estimations of the solar potential from the building design files may affect placement considerations in favor of more sunlight reception that reduces the energy costs and saves the environment. In this study, a GPU based ...
• Daily basis mid-term demand forecast of city natural gas using univariate statistical techniques 

  ; Akpınar, Mustafa; Yumuşak, Nejat (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2020)

  City distribution companies or companies with high consumption are required to report monthly consumption demand forecasts for the year ahead and year based daily consumption demand forecasts in natural gas sector. This ...
• A template-based code generator for web applications 

  ; Burak Uyanik; Şahin, Veysel Harun (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2020)

  The importance and usage of web applications grow every day. Today from small businesses to large-scale corporations, many institutions prefer web applications for both their internal and external services. Code size and ...
• Investigation Studies in the Life Experiences of Families of Children with Autism Spectrum Disorders: A Meta-Synthesis Study 

  Yassıbaş, Uğur (ANI PUBLISHING, )
• A modeling and simulation study about CO2 amount with web-based indoor air quality monitoring 

  Balta, Deniz; Özmen, Ahmet; Yalçın, Nesibe (TUBİTAK, 2018-05-30)

  Human breath causes indoor air quality (IAQ) to get worse in overcrowded places such as schools, hospitals, and offices where people spend most of their time, and it is rarely felt. For a healthy and comfortable living ...
• A symbolic algorithm for the automatic computation of multitone-input harmonic balance equations for nonlinear systems 

  Akgün, Devrim; Çankaya, İlyas (SPRINGER, 2009)

  A symbolic algorithm is developed for the automatic generation of harmonic balance equations for multitone input for a class of nonlinear differential systems with polynomial nonlinearities. Generalized expressions are ...
• A study on the development of a compensation method for humidity effect in QCM sensor responses 

  Mumyakmaz, Bekir; Özmen, Ahmet; Ebeoglu, Mehmet A.; Cihat Tasaltin; Ilke Gurol (ELSEVIER SCIENCE SA, 2010)

  In this study, humidity influence on quartz crystal microbalance (QCM) sensor responses during gas applications is investigated. The goal is to search a compensation method to remove humidity influence over the QCM sensor ...
• Frequency response investigations of multi-input multi-output nonlinear systems using automated symbolic harmonic balance method 

  Akgün, Devrim; Çankaya, İlyas (SPRINGER, 2010)

  The frequency response characteristics of MIMO systems are investigated by using harmonic balance equations. For this purpose, the algorithm for the automatic generation of harmonic balance equations is extended to include ...
• LIBRARY AUTOMATION DESIGN FOR VISUALLY IMPAIRED PEOPLE 

  Yurtay, Nilüfer; Yücel Bicil; Sait Çelebi; Çit, Gülüzar; Balta, Deniz (TURKISH ONLINE JOURNAL EDUCATIONAL TECH-TOJET, 2011)

  Speech synthesis is a technology used in many different areas in computer science. This technology can bring a solution to reading activity of visually impaired people due to its text to speech conversion. Based on this ...
• An Accelerated Method for Determining the Weights of Quadratic Image Filters 

  Suleyman Uzun; Akgün, Devrim (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2018)

  Quadratic filters are usually more successful than linear filters in dealing with nonlinear noise characteristics. However, determining the proper weights for the success of quadratic filters is not straightforward as in ...
• Accelerated method for the optimization of quadratic image filter 

  Akgün, Devrim (IS&T & SPIE, 2019)

  Quadratic image filter involves the second-order multiplications of an input image mask in addition to linear terms, and determining the weights of the quadratic filter using optimization methods requires intense computational ...
• An entropy-based algorithm for data elimination in time-driven software instrumentation 

  Özmen, Ahmet (ELSEVIER SCIENCE INC, 2009)

  While monitoring, instrumented long running parallel applications generate huge amount of instrumentation data. Processing and storing this data incurs overhead, and perturbs the execution. A technique that eliminates ...
• Predicting gas concentrations of ternary gas mixtures for a predefined 3D sample space 

  Bekir Mumyakmaz; Özmen, Ahmet; M. Ali Ebeoglu; Cihat Tasaltin (ELSEVIER SCIENCE SA, 2008)

  This paper presents a QCM sensor array and a data processing system to find gas concentration ratios of ternary gas mixtures. QCM sensors are very commonly used for gas sensing and detecting systems since they have linear ...

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