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Bulunan: 65 Adet 0.002 sn
Yayın Tarihi : 2017 ✕Koleksiyon : Mühendislik ve Doğa ... ✕
Koleksiyon [9]
İlgili Araştırmacılar [20]
Ambargo Durumu [1]
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Yayın Türü [4]
Yazar/lar [20]
Atıf Dizini [3]
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Tez Danışmanı [1]
Yayın Tarihi [1]
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Erişime Açık

A Multistage Deep Learning Algorithm for Detecting Arrhythmia

ALLAHVERDİ, Novruz | KUTLU, Yakup | ALTAN, Gökhan

Deep Belief Networks (DBN) is a deep learning algorithm that has both greedy layer-wise unsupervised and supervised training. Arrhythmia is a cardiac irregularity caused by a problem of the heart. In this study, a multi-stage DBN classification is proposed for achieving the efficiency of the DBN on arrhythmia disorders. Heartbeats from the MITBIH Arrhythmia database are classified into five groups which are recommended by AAMI. The Wavelet packet decomposition, higher order statistics, morphology and Discrete Fourier transform techniques were utilized to extract features. The classification pe ...Daha fazlası

Konferans Bildirisi 2017 IEEE 6 Görüntülenme
Erişime Açık

The Function Analysis and its Application to Determination of Fuzzy Subsets for Model Helicopter Fuzzy Control

ALLAHVERDİ, Novruz | HACIMURTAZAOĞLU, Murat

In this study, an analysis of the function that determines the sub-clusters of the fuzzy controller for model helicopter control is performed. For this purpose, a model helicopter and a test platform were established in which the results of the function analysis can be seen and the application results will be examined. Arduino control card is used for model control. Analysis results are analyzed on computer using c # program. The computer connection with the model is carried out via the Usb port. Input parameters for control are obtained from the sensors on the model. The output values are cal ...Daha fazlası

Konferans Bildirisi 2017 5 Görüntülenme
Erişime Açık

Drought and Flood Analyses of Samsun City

DEMİR, Vahdettin | BİLGE, Hümeyra | SEVİMLİ, Mehmet Faik

The aim of this study is to analyze the flood and drought based on precipitation and streamflow data gathered from Samsun City, the most developed province of the Black Sea Region. Flood and drought analysis are important for the water resources management and important for anticipating the natural disasters that may occur in Samsun. The study has been carried out in two parts. In the first part, streamflow data, covering the period from 1964 to 2015, provided by the Current Observation Station, which is the most powerful parameter causing flood, was investigated for flood analysis by Mann-Ken ...Daha fazlası

Konferans Bildirisi 2017 International Conference on Civil and Environmental Engineering 5 Görüntülenme
Erişime Açık

Static analysis of laminated composite beams based on higher-order shear deformation theory by using mixed-type finite element method

ÖZÜTOK, Atilla | MADENCİ, Emrah

In this paper, mixed finite element (MFEM) equations which are based on a functional are obtained by using the Gâteaux differential (GD) for laminated composite beams. Higher-order shear deformation theory (HOBT) including non-linear distribution of shear stress through thickness of laminated beam is presented. Differential field equations of composite beams are derived from virtual displacement principle. These equations were trans- formed into the operator form and using the mathematical advantages of the proposed the variational method, a functional with geometric and dynamic boundary condi ...Daha fazlası

Makale 2017 International Journal of Mechanical Sciences 3 Görüntülenme
Erişime Açık

Numerical modeling of Samsun Mert River floods

ÜLKE, Aslı | BEDEN, Neslihan | DEMİR, Vahdettin | MENEK, Necati

Floods are considered one of the most important natural disasters after earthquakes in Turkey. As a result, there is currently great public interest in this issue and it is necessary to intensify research activities in order to understand natural disasters better and to reinforce risk management. The effect of climate change on meteorological events causes an increase in extreme events such as excessive precipitation in some regions. An extreme natural event becomes a disaster when it has a large impact on human settlements and activities. Study area Samsun city is placed in the north of Turke ...Daha fazlası

Makale 2017 European Water 4 Görüntülenme
Erişime Açık

Karaciğer MR Görüntülerindeki Farklı Fazların Füzyonu ile İyi Huylu ve Kötü Huylu Lezyonların Belirlenmesi

ERVURAL, Saim | CEYLAN, Murat

Bu çalışmada, karaciğer fokal lezyonlarının türünün belirlenmesinde uzmanların karar vermelerini kolaylaştırmak amacıyla T1 ağırlıklı, dinamik kontrastlı karaciğer manyetik rezonans (MR) görüntülerinin farklı fazları dalgacık tabanlı görüntü füzyonu uygulanarak birbirleriyle kombine edilmiştir. Kullanılan veriler, hepatoselüler karsinom (HCC), kolanjioselüler karsinom (CCC), fokal nodüler hiperplazya (FNH), metastaz, kist ve hemanjiyom olmak üzere 6 farklı fokal lezyon türüne göre etiketlenmiştir. Uygulamada, 30 farklı hastadan, kontrast öncesi, arteryal, portal venöz ve geç venöz olmak üzere ...Daha fazlası

Konferans Bildirisi 2017 25. IEEE Sinyal İşleme ve İletişim Uygulamaları Kurultayı 9 Görüntülenme
Erişime Açık

Measurement of the production of high-pT electrons from heavy-flavour hadron decays in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Electrons from heavy-flavour hadron decays (charm and beauty) were measured with the ALICE detector in Pb–Pb collisions at a centre-of-mass of energy √sNN = 2.76 TeV. The transverse momentum (pT) differential production yields at mid-rapidity were used to calculate the nuclear modification factor RAA in the interval 3 < pT < 18 GeV/c. The RAA shows a strong suppression compared to binary scaling of pp collisions at the same energy (up to a factor of 4) in the 10% most central Pb–Pb collisions. There is a centrality trend of suppression, and a weaker suppression (down to a factor of 2) in semi- ...Daha fazlası

Makale 2017 3 Görüntülenme
Erişime Açık

A Comparison of Various Fusion Methods for CT and MR Liver Images

ERVURAL, Saim | CEYLAN, Murat

In this study, liver Magnetic Resonance (MR) images and Computerized Tomography (CT) images were combined with wavelet-based image fusion methods to facilitate expert decision-making in identifying the type of liver focal lesions. For this purpose, 46 MR and 46 CT images were used belong to 36 different patients. These images include different type of focal liver lesions samples that cysts, Hepatocellular Carcinoma (HCC), Colagiocellular Carcinoma (CCC), Focal Nodular Hyperplasia (FNH), liver metastases and hemangioma. For the fusion, three different fusion rules including average rule, maximu ...Daha fazlası

Makale 2017 Journal of Image and Graphics 6 Görüntülenme
Erişime Açık

Energy dependence of forward-rapidity J/ψ and ψ(2S) production in pp collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

Abstract We present results on transverse momentum (pt) and rapidity (y) differential production cross sections, mean transverse momentum and mean transverse momen- tum square of inclusive J/ψ and ψ(2S) at forward rapid- ity (2.5 < y < 4) as well as ψ(2S)-to-J/ψ cross section ratios. These quantities are measured in pp collisions at cen- ter of mass energies √s = 5.02 and 13 TeV with the ALICE detector. Both charmonium states are reconstructed in the dimuon decay channel, using the muon spectrometer. A com- prehensive comparison to inclusive charmonium cross sec- tions measured at √s = 2.76, 7 ...Daha fazlası

Diğer 2017 8 Görüntülenme
Erişime Açık

J/ψ Elliptic Flow in Pb-Pb Collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report a precise measurement of the J=ψ elliptic flow in Pb-Pb collisions at sNN 1⁄4 5.02 TeV with the ALICE detector at the LHC. The J=ψ mesons are reconstructed at midrapidity (jyj < 0.9) in the dielectron decay channel and at forward rapidity (2.5 < y < 4.0) in the dimuon channel, both down to zero transverse momentum. At forward rapidity, the elliptic flow v2 of the J=ψ is studied as a function of the transverse momentum and centrality. A positive v2 is observed in the transverse momentum range 2 < pT < 8 GeV=c in the three centrality classes studied and confirms with higher statistics ...Daha fazlası

Diğer 2017 4 Görüntülenme
Erişime Açık

J/ψ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The inclusive J/ψ production has been studied in Pb–Pb and pp collisions at the centre-of-mass energy per nucleon pair √sNN = 5.02 TeV, using the ALICE detector at the CERN LHC. The J/ψ meson is reconstructed, in the centre-of-mass rapidity interval 2.5 < y < 4 and in the transverse-momentum range pT < 12 GeV/c, via its decay to a muon pair. In this Letter, we present results on the inclusive J/ψ cross section in pp collisions at √s = 5.02 TeV and on the nuclear modification factor RAA. The latter is presented as a function of the centrality of the collision and, for central collisions, as a f ...Daha fazlası

Makale 2017 6 Görüntülenme
Erişime Açık

K∗(892)0 and φ(1020) meson production at high transverse momentum in pp and Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of K∗(892)0 and φ(1020) mesons in proton-proton (pp) and lead-lead (Pb-Pb) collisions at √sNN = 2.76 TeV has been analyzed using a high luminosity data sample accumulated in 2011 with the ALICE detector at the Large Hadron Collider (LHC). Transverse momentum (pT) spectra have been measured for K∗(892)0 and φ(1020) mesons via their hadronic decay channels for pT up to 20 GeV/c. The measurements in pp collisions have been compared to model calculations and used to determine the nuclear modification factor and particle ratios. The K∗(892)0/K ratio exhibits significant reduction fro ...Daha fazlası

Diğer 2017 4 Görüntülenme
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