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Bulunan: 59 Adet 0.001 sn
Yayın Tarihi : 2017 ✕Koleksiyon : Mühendislik ve Doğa ... ✕
Koleksiyon [8]
İlgili Araştırmacılar [20]
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Yazar/lar [20]
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Erişime Açık

Measurement of D-meson production at mid-rapidity in pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production cross sections for prompt charmed mesons D0 , D+ , D∗+ and D+s were measured at mid-rapidity in proton–proton collisions at a centre-of-mass energy √s = 7 TeV with the ALICE detector at the Large Hadron Collider (LHC). D mesons were reconstructed from their decays D0 → K−π+, D+ → K−π+π+, D∗+ → D0π+, D+s → φπ+ → K−K+π+, and their charge conju- gates.With respect to previous measurements in the same rapidity region, the coverage in transverse momentum ( pT ) is extended and the uncertainties are reduced by a factor of about two. The accuracy on the estimated total cc produc- tion ...Daha fazlası

Makale 2017 4 Görüntülenme
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

Measurement of deuteron spectra and elliptic flow in Pb–Pb collisions at √sNN = 2.76 TeV at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

The transverse momentum ( pT ) spectra and elliptic flow coefficient (v2) of deuterons and anti-deuterons at mid-rapidity (|y| < 0.5) are measured with the ALICE detector at the LHC in Pb–Pb collisions at √sNN = 2.76 TeV. The measurement of the pT spectra of (anti-)deuterons is done up to 8 GeV/c in 0–10% centrality class and up to 6 GeV/c in 10–20% and 20–40% centrality classes. The v2 is measured in the 0.8 < pT < 5 GeV/c interval and in six dif- ferent centrality intervals (0–5, 5–10, 10–20, 20–30, 30–40 and 40–50%) using the scalar product technique. Measured π ± , K± and p+p transverse-mo ...Daha fazlası

Makale 2017 4 Görüntülenme
Erişime Açık

A Novel Immobilization Matrix For The Biosensing Of Phenol: Self Assembled Monolayers Of Calixarenes

TAŞÇI, Filiz | SAYIN, Serkan | AĞ SELECİ, Didem | DEMİR, Bilal | AZAK, Hacer | YILDIZ, Hüseyin Bekir | ODACI DEMİRKOL, Dilek | TİMUR, Suna

Aim: The development of calixarene based phenol biosensor. Methods: This study describes the application of a calixarene derivative, 5,17-diamino-25,27-bis(3-thiol-1-oxypropane)-26,28-dihydroxycalix[4]arene (HS-Calix-NH2) which has both amino and thiol functionalities, in the practical surface modifications for biomolecule binding. The structure of HS-Calix-NH2 allows easy inter-action with Au surface and one-step biomolecule immo-bilization. Self-assembled monolayers (SAMs) of p-amino-functionalized mercaptoalkylcalixarene (HS-Calix-NH2) were formed onto the Au electrode. Then, Laccase (Lac) ...Daha fazlası

Makale 2017 Turkish Journal of Biochemistry (Turkish Biochemical Society) 7 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

Constraining the magnitude of the Chiral Magnetic Effect with Event Shape Engineering in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

In ultrarelativistic heavy-ion collisions, the event-by-event variation of the fluctuations in the shape of the initial state of the system. This allows to select events with the same centrality but different initial geometry. This selection technique, Event Shape Engineering, has been used in the analysis of charge-dependent two- and three-particle correlations in Pb–Pb collisions at √sNN = 2.76 TeV. The two-particle correlator ⟨cos(φα − φβ )⟩, calculated for different combinations of charges α and β, is almost independent of v2 (for a given centrality), while the three-particle correlator ⟨c ...Daha fazlası

Makale 2017 3 Görüntülenme
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Determination of the event collision time with the ALICE detector at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

Particle identification is an important feature of the ALICE detector at the LHC. In particular, for particle identification via the time-of-flight technique, the precise determination of the event collision time represents an important ingredient of the quality of the measurement. In this paper, the different methods used for such a measurement in ALICE by means of the T0 and the TOF detectors are reviewed. Efficiencies, resolution and the improvement of the particle identification separation power of the methods used are presented for the different LHC colliding systems (pp, p-Pb and Pb-Pb) ...Daha fazlası

Makale 2017 3 Görüntülenme
Erişime Açık

Measuring K0K± interactions using Pb–Pb collisions at √sNN = 2.76STeV

KARASU UYSAL, Ayben | ALICE Collaboration

We present the first ever measurements of femtoscopic correlations between the K0 and K± particles. The analysis was performed on the data from Pb–Pb collisions at sNN = 2.76 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding via the a0(980) resonance. The extracted kaon source radius and correlation strength parameters for K0 K− are found to be equal within the experimental uncertainties to those for K0 K+ . Comparing the S S results of the present study with those from published identical-kaon femtoscopic studie ...Daha fazlası

Makale 2017 6 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

Flow Dominance and Factorization of Transverse Momentum Correlations in Pb-Pb Collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

We present the first measurement of the two-particle transverse momentum differential correlation function, P2 ≡ h∆pT∆pTi/hpTi 2 , in Pb–Pb collisions at √sNN = 2.76 TeV. Results for P2 are reported as a function of relative pseudorapidity (∆η) and azimuthal angle (∆ϕ) between two particles for different collision centralities. The ∆φ dependence is found to be largely independent of ∆η for |∆η| ≥ 0.9. In 5% most central Pb–Pb collisions, the two-particle transverse momentum correlation function exhibits a clear double-hump structure around ∆ϕ = π (i.e., on the away side), which is not observed ...Daha fazlası

Makale 2017 6 Görüntülenme
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