نتایج جستجو برای: الگوریتم annealing

تعداد نتایج: 48923  

Journal: :Pattern Recognition 1991
Shokri Z. Selim K. Alsultan

In this paper we discuss the solution of the clustering problem usually solved by the K-means algorithm. The problem is known to have local minimum solutions.A simulated annealing algorithm for the clustering problem. The solution of the clustering problem usually solved by the K-means algorithm.In this paper, we explore the applicability of simulated annealing. Clustering problem is investigat...

2013
Mao Sui Ming-Yu Li Eun-Soo Kim Jihoon Lee

We investigate the effect of annealing temperature on self-assembled Au droplets on Si (111). The annealing temperature is systematically varied while fixing other growth parameters such as deposition amount and annealing duration clearly to observe the annealing temperature effect. Self-assembled Au droplets are fabricated by annealing from 50°C to 850°C with 2-nm Au deposition for 30 s. With ...

2013
Y. Jin M. Bernacki Gregory S. Rohrer Anthony D. Rollett Brian Lin N. Bozzolo

Understanding of the mechanisms of annealing twin formation is fundamental for grain boundary engineering. In this work, the formation of annealing twins in a 304L austenitic stainless steel is examined in relation to the thermo-mechanical history. The behavior of annealing twins of various morphologies is analyzed using an in-situ annealing device and EBSD. The results confirm that there is a ...

Journal: :Physical Review A 2022

We study adiabatic reverse annealing (ARA) in an open system. In the closed system (unitary) setting, this protocol allows avoidance of first-order quantum phase transitions selected models, resulting exponential speedup compared with standard annealing, provided that initial state algorithm is close Hamming distance to target one. Here, we show decoherence can significantly modify conclusion: ...

The formation of nano/ultrafine grained ferrite in low carbon steels containing different amounts of niobium was investigated using thermomechanical treatment which consisted of annealing of 85% cold rolled martensite with different parameters. The specimens were characterized by optical and scanning electron microscopy and Vickers hardness test. A lamellar dislocation cell structure was formed...

M. A. Sohrabizadeh M. Sheikhi Y. Mazaheri

In the current study, the recrystallization behavior of 75% cold-rolled Fe-22Mn-10Al-1.4C steel during annealing at 750, 770, 790, 810, and 830°C was studied. X-ray diffraction patterns and optical microscopy were used to characterize microstructures. The Vickers Micro-hardness test was used to characterize recrystallization kinetics during annealing. Johnson-Mehl-Avrami-Kolmogorov (JMAK) model...

موسوی قهفرخی, سید ابراهیم, کاظمی‌نژاد, ایرج, کیان علیخانی, راحله,

In this research, PbFe11Co1O19 with annealing temperatures of 600, 700, 750, 800, 850 and 900 ˚C at annealing time of 3 h were synthesized by sol-gel method. The structural, microstructure properties and morphology of the samples have been studied by XRD, FT-IR and FESEM. Also, magnetic and dielectric properties of samples were characterized by VSM and LCR meter. The results of measurements of ...

2010
N. Dam TRAN Toru SASAKI Takashi KIKUCHI

We investigated one-step, rapidly cleaning, and annealing thin wire copper using plasma generated by Dielectric-Barrier Discharge (DBD) at atmospheric pressure in a coaxial cylindrical reactor. The thin copper wire cleaning and annealing processes strongly depend on the input power, the dimensions of the reactor, and the annealing duration. The minimum input power was calculated under stable an...

2014
Jae-Sang Ro

Abnormal behavior of dopant activation was observed in P + /B + ion shower doped poly-Si upon post implant annealing. Phosphorous or boron was implanted by ion shower doping using a source gas mixture of PH3/H2 or B2H6/H2. Activation annealing was conducted using a tube furnace in the temperature ranges from 350 o C to 650 o C. Hall measurement revealed that reverse annealing occurred for poly-...

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

zno thin films were deposited on si(400) substrates by e-beam evaporation technique, and then post-annealed at different annealing temperatures (200-800°c). dependence of the crystallographic structure, nano-strain, chemical composition and surface physical morphology of these layers on annealing temperature were studied. the crystallographic structure of films was studied using x-ray diffracti...

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