Browsing Makale Koleksiyonu by Issue Date
Now showing items 1-20 of 58
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Adaptive multi-element synthetic aperture imaging with motion and phase aberration correction
(Ieee-Inst Electrical Electronics Engineers Inc, 1998)Multi-element synthetic aperture techniques employing subaperture processing over successive firing steps can produce good image quality with simple front-end hardware but are susceptible to motion and phase aberration ... -
An alternative algorithm for the refinement of ULV decompositions
(Siam Publications, 2005)The ULV decomposition ( ULVD) is an important member of a class of rank-revealing two-sided orthogonal decompositions used to approximate the singular value decomposition ( SVD). It is useful in applications of the SVD ... -
Subspace tracking in low-rank real-time systems
(Elsevier Science Inc, 2006)The truncated ULV decomposition (TULVD) provides good approximation to subspaces for the data matrix and can be modified quickly to reflect changes in the data. It also reveals the rank of the matrix. We develop an updating ... -
Application of an adaptive neuro-fuzzy inference system for classification of Behcet disease using the fast Fourier transform method
(Blackwell Publishing, 2007)In this study, ophthalmic arterial Doppler signals were obtained from 200 subjects, 100 of whom suffered from ocular Behcet disease while the rest were healthy subjects. An adaptive neuro-fuzzy inference system (ANFIS) was ... -
Examination of static and 50 Hz electric field effects on tissues by using a hybrid genetic algorithm and neural network
(Wiley, 2008)The effects of electric fields on tissue are the main subject of many investigations. The importance of this subject comes from the electrical properties of the cell membrane and its sensitivity to changes in electrical ... -
Comparison of MLP neural network and neuro-fuzzy system in transcranial doppler signals recorded from the cerebral vessels
(Springer, 2008)Transcranial Doppler signals recorded from cerebral vessels of 110 patients were transferred to a personal computer by using a 16 bit sound card. Spectral analyses of Transcranial Doppler signals were performed for determining ... -
Propagation of modified Bessel-Gaussian beams in turbulence
(Elsevier Sci Ltd, 2008)We investigate the propagation characteristics of modified Bessel-Gaussian beams traveling in a turbulent atmosphere. The source beam formulation comprises a Gaussian exponential and the summation of modified Bessel ... -
Modifiable low-rank approximation to a matrix
(Wiley, 2009)A truncated ULV decomposition (TULVD) of an m x n matrix X of rank k is a decomposition of the form X=ULVT + E, where U and V are left orthogonal matrices, L is a k x k non-singular lower triangular matrix and E is an error ... -
Classification of educational backgrounds of students using musical intelligence and perception with the help of genetic neural networks
(Pergamon-Elsevier Science Ltd, 2009)In this study, we demonstrate that machine learning can be used to classify students who had backgrounds in positive-sciences (including engineering, science and math disciplines) vs. social-sciences (including arts and ... -
Advanced Adaptation Techniques for Improved Video Perception
(Ieee-Inst Electrical Electronics Engineers Inc, 2012)Three different advanced adaptation techniques for improving the video perception of users are proposed in this paper. The proposed techniques exploit different adaptation decision-taking and adaptation approaches to adapt ... -
Uzaktan ve Örgün Eğitimin Öğrenci Başarısı Üzerine Etkisinin Araştırılması
(2013)Bu çalışmada meslek yüksekokulu bilgisayar programcılığı bölümü öğrencilerinden uzaktan eğitim ve örgün eğitim alan iki farklı grup arasında öğretim metotlarının, öğrenci başarı düzeylerine etkisi incelenmiştir. Araştırmada ... -
2D quasi-planar or 3D structures? A comparison between CrBn (n=2-10) wheel-like clusters and their corresponding 3D pyramidal clusters, and their hydrogen storage capability
(World Scientific Publ Co Pte Ltd, 2015)In this study, we investigated stable structures for a transition metal atom-boron (CrB) wheel-like clusters and compared them with their corresponding 3D counterparts by means of density functional theory (DFT). In addition, ... -
Private school teachers’ views on using tablets in education
(Ankara University, 2016)In this study, views of the 257 teachers, working at the Bahçeşehir Colleges located in Ankara, Kocaeli, Kayseri, Adana, Tokat, İzmir, Burhaniye and Edirne, about the use of tablet computers in education are tried to be ... -
First-principles investigation of LaGaO3 and LaInO3 lanthanum perovskite oxides
(Taylor & Francis Ltd, 2016)Among the class of ABO(3)-type perovskite oxides, LaMO3 (M=Ga and In) compounds are investigated in cubic (Pm-3m), tetragonal (P4mm), hexagonal (P-3m1), rhombohedral (R-3c) and orthorhombic (Pbnm) phases using generalised ... -
Eğitimde Tablet Bilgisayar Kullanımına Yönelik Özel Okul Öğretmenlerinin Görüşleri
(2016)Bu çalışmada, Bahçeşehir Kolejlerinin Ankara, Kocaeli, Kayseri, Adana, Tokat, İzmir, Burhaniye ve Edirne’de yer alan kampüslerindeki 257 öğretmenin eğitimde tablet bilgisayar kullanımıyla ilgili görüşleri belirlenmeye ... -
Structural and computational characterization of 4 ',4 ',6 ',6 '-tetrachloro-3-(2-methoxyethyl)-3H,4H-spiro-1,3,2-benzoxaza phosphinine-2,2 '-[1,3,5,2,4,6]triazatriphosphinine
(Elsevier, 2016)In this study a new monospirocyclic phosphazene derivative, 4',4',6',6'-tetrachloro-3-(2-methoxyethyl)3H,4H-spiro [1,3,2-benzoxazaphosphinine-2,2'- [1,3,5,2,4,6] triazatriphosphinine] (SP1) was synthesized from the reaction ... -
Use of Augmented Reality in Mobile Devices for Educational Purposes
(Igi Global, 2017)Use of technology in education has been widespread in the last decade, thanks to developments and improvements in information and communication technologies, especially in mobile devices. Among the fields in which mobile ... -
An Examination Of The Correlation Between Science And Technology Attitudes Scale, Frequency Of Smartphone Usage Scale And Lifelong Learning Scale Scores Using The Structural Equation Model
(Sci Methodical Ctr-Sci Educologica, 2017)Lifelong learning can be defined as all of the activities which aim to develop an individual's skills, knowledge and abilities, socially, individually and professionally. Previous research on lifelong learning has been ... -
A real time virtual classroom implementation with WebRTC
(Pamukkale Univ, 2017)WebRTC is an open source communication project which provides the communication of web based real time sound, video, and data, In this study, some difficulties ure analyzed and eliminated with the application of Sunul Ders ... -
Medical Image Archiving System Implementation with Lossless Region of Interest and Optical Character Recognition
(Amer Scientific Publishers, 2017)Digital medical images have been widely used in all stages of healthcare. It has a vital role to transfer and to store digital medical images for medical experts and patients. Since the large file sizes and storage space ...