Yazar "Şahin, Mehmet" için listeleme
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Determination of hypertension disease using chirp z-transform and statistical features of optimal band-pass filtered short-time photoplethysmography signals
Aydemir, Tuğba; Şahin, Mehmet; Aydemir, Önder (Iop Publishing Ltd, 2020)Hypertension is the condition where the normal blood pressure is high. This situation is manifested by the high pressure of the blood in the vein towards the vessel wall. Hypertension mostly affects the brain, kidneys, ... -
Determination of mass attenuation coefficients for natural minerals from different places of Turkey
Han, İbrahim; Kolaylı, Hasan; Şahin, Mehmet (2011)The mass attenuation coefficients (?m) for some natural minerals taken from different places of Turkey were measured at various low photon energies. The Am-241 radioactive source and Zr and Cd secondary exciter are used ... -
Differential inelastic scattering cross-section of silicon and gallium arsenide semiconductor crystals
Kabil, H.; Sakar, E.; Meral, A.; Şahin, Mehmet; Gürol, A. (Chemical Publishing Co., 2016)Because of the extensive usage of silicon and gallium arsenide semiconductor crystals, the differential inelastic scattering cross-sections at 59.5 keV have been measured for various scattering angles changing from 120 to ... -
Gender recognition from PPG signals of people with different blood pressure
Aydemir, Tuğba; Şahin, Mehmet; Aydemir, Önder (IEEE, 2021)Photoplethysmography (PPG) is an opto-electronic technique that measures the blood volume within micro-vascular tissue. Studies based on measuring blood pressure level with PPG have been widely used. In this study, gender ... -
Investigating XRF parameters and valance electronic structure of the Co, Ni, and Cu spinel ferrites
Demir, Lütfü; Perişanoğlu, Ufuk; Şahin, Mehmet (Elsevier Sci Ltd, 2019)In the present study, K X-ray emission spectra of Cu, Ni, Co spinel ferrite (MFe2O4) alloys obtained with a HPGe detector by inducing 59.54 keV and 22.1 keV y gamma-rays emitted from 3 Ci Am-241 annular source and 40 mCi ... -
Measurement of Lα, Lβ and Total L X-ray fluorescence cross-sections for some elements with 40≤Z≤53
Han, I.; Porikli, S.; Şahin, Mehmet; Demir, L. (Elsevier, 2010)Lα, Lβ and total L X-ray fluorescence (XRF) cross-sections have been measured for the nine elements (Zr, Nb, Mo, Ag, Cd, In, Sn, Sb and I) using photon energy 5.96 keV. In these the elements, Lα and Lβ spectra were derived ... -
Milli mücadele dönemi savaşlarının en küçük örten ağaç yöntemi i̇le i̇ncelenmesi
Yıldız, Muhammet; Batı, Mehmet; Şahin, Mehmet (2017)1. Dünya Savaşı sonrasında imzalanan Mondros Mütarekesi ve Sevr Antlaşması, Batılı devletlerin Osmanlı üzerinden Anadolu topraklarını parçalama girişimidir. Yapılan bu müzakereler ile Anadolu, farklı ülkelerin güdümünde ... -
A new method for activity monitoring using photoplethysmography signals recorded by wireless sensor
Aydemir, Tuğba; Şahin, Mehmet; Aydemir, Önder (Springer Heidelberg, 2020)Purpose Different kinds of sensors such as accelerometers and gyroscopes have been used for inferring, predicting, and monitoring human activities for various kinds of applications, including human-computer interaction, ... -
Sequential forward mother wavelet selection method for mental workload assessment on N-back task using photoplethysmography signals
Aydemir, Tuğba; Şahin, Mehmet; Aydemir, Önder (Elsevier, 2021)The increasing demands of a cognitive task require additional brain resources. This demand, known as mental workload, can lead to deteriorated task performance. Therefore, assessment of mental workload can provide a proper ... -
Study of the hydrothermal crystallization process of barium titanate by means of X-ray mass attenuation coefficient measurements at an energy of 59.54 keV
Özen, Songül Akbulut; Özen, Murat; Şahin, Mehmet; Mertens, Myrjam (Elsevier Science Inc, 2017)In this work, the X-ray mass attenuation coefficients of hydrothermally synthesized barium titanate (BaTiO3) samples were calculated with the purpose of determining the crystallization sequence of BaTiO3. Hydrothermally ...
