Yazar "Şahin, Mehmet" için WoS İndeksli Yayınlar Koleksiyonu 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, ... -
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 ... -
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 ...