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A Reinvestigation of the Physical Properties of Pismis 3 based on 2MASS Photometry

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Chinese Journal of Astronomy and Astrophysics 2008年第3期8卷 362-368页

作者： Tadross A.l. National Research Institute of Astronomy and Geophysics 11421-HelwanCairoEgypt

As a continuation of a series of work, we aim to refine and re-determine the physical parameters of previously rarely or un-studied open star clusters with good quality CMDs using Near-IR JHK photometry. Here we present a morphological analysis of the 2MASS database （the digital ＂Two Micron All Sky Survey＂） for the open cluster Pismis 3. Some of the physical parameters are estimated for the first time, and some others, re-determined.

关键词： techniques photometric -- Galaxy open clusters and associations -- stars luminosity function -- stellar clusters individual Pismis 3

An Alternative to Free Entropy for Free Group Factors

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Acta Mathematica Sinica,English Series 2003年第3期19卷 419-472页

作者： MichalDOST/~l DonHADWIN Mexicka4 Praha10CZ-10100CzechRepublic DepartmentofMathematics UniversityofNewHampshireDurhamNH03824-3591USA

In this paper we define a very simple invariant η(V^-) for a k-tuple V^-of unitaries in a finite factor von Neumann algebra, and we show how this invariant can replace free entropy in many of the important applications. We also introduce a notion of metric free entropy and some related *** include proofs, using η, of the theorems of liming Ge and of D. Voiculescu, respectively, on the primeness of and on the absence of Cartan snbalgebras in the noncommutative free group factors.

关键词： FREE groups AlGEBRA

Existence for a Class of Non-Newtonian Fluids with a Nonlocal Friction Boundary Condition

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Acta Mathematica Sinica,English Series 2006年第2期22卷 523-534页

作者： l.CONSIGlIERI Department of Mathematics and CMAF Sciences Faculty of University of Lisbon 1749-016 Lisboa Portugal

We deal with a variational inequality describing the motion of incompressible fluids, whose viscous stress tensors belong to the subdifferential of a functional at the point given by the symmetric part of the velocity gradient, with a nonlocal friction condition on a part of the boundary obtained by a generalized mollification of the stresses. We establish an existence result of a solution to the nonlocal friction problem for this class of non-Newtonian flows. The result is based on the Faedo-Galerkin and Moreau Yosida methods, the duality theory of convex analysis and the Tychonov-Kakutani-Glicksberg fixed point theorem for multi-valued mappings in an appropriate functional space framework.

关键词： Non-Newtonian fluids Coulomb and nonlocal friction

Acoustic Velocities and Elastic Properties of Pyrite (FeS2) to 9.6 GPa

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Journal of Earth Science 2010年第5期21卷 792-800页

作者： Matthew l Whitaker Mineral Physics Institute Stony Brook University Geodynamics Research Center Ehime University

Ultrasonic interferometry was utilized in conjunction with synchrotron-based X-ray diffraction and X-radiographic imaging to determine the compressional and shear wave velocities and unlt-cdl volumes of pyrite （FeS2） at room temperature and pressures up to 9.6 GPa. Fitting all of the experimental volume and velocity data to third-order finite-strain equations yielded the adiabatic zero-pressure bulk and shear moduli and their first pressure derivatives： Ks0=138.9（7） GPa, Go=U2.3（3） GPa, （δKS0/δP）T=KS0＇=6.0（1）, （δG0/δP）T=G0＇=3.0（〈1）, where the numbers in parentheses represent the 1δ uncertainty in the last significant digit. These results are in good agreement with several previous static compression studies on this material but differ quite strongly from the results obtained via first principles calculations. This study presents the first direct measurement of the bulk shear properties of this material.

关键词： mineral physics ultrasonic interferometry high pressure iron sulfide elastic property equation of state.

IN SITU TEM OBSERVATION OF AMORPHOUS Nd_(x)Fe_(1-x)THIN FIlMS AND THEIR CRYSTAllIZATION

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Acta Metallurgica Sinica(English letters) 1993年第11期6卷 387-392页

作者： lÜ Manqi WAGENDRISTEl A State Key laboratory of Rapidly Solidified and Non-Equilibrium Alloys International Centre for Meterials PhysicsInstitute of Metal ResearchAcademia SinicaShenyangChina Institut fur Anwend Physik Technische Universitat in WienAustria

The room temperature stability and crystallization of amorphous Nd_xFe_(1-x)thin films with x=0.06—0.90,prepared by flash evaporation at 77 K,were investigated by X-ray diffraction and TEM *** amorphous Nd_xFe_(1-x)films are stable at room temperature when 0.19long the surface of film as very thin flakes and become thick only at relatively high *** complete crystallization,the Nd_xFe_(1-x)films with xl Nd,but no NdFe2,a phase expected to occur by phase diagram.

关键词： amorphous film Nd-Fe film crystallization

The evolution and refinements of varicocele surgery

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Asian Journal of Andrology 2016年第2期18卷 171-178,J0002页

作者： Joel l Marmar Director of Men's Health Services Planned Parenthood of Southern New Jersey 317 S. Broadway Camden NJ 08103 USA.

Varicoceles had been recognized in clinical practice for over a century. Originally, these procedures were utilized for the management of pain but, since 1952, the repairs had been mostly for the treatment of male infertility. However, the diagnosis and treatment of varicoceles were controversial, because the pathophysiology was not clear, the entry criteria of the studies varied among centers, and there were few randomized clinical trials. Nevertheless, clinicians continued developing techniques for the correction of varicoceles, basic scientists continued investigations on the pathophysiology of varicoceles, and new outcome data from prospective randomized trials have appeared in the world＇s literature. Therefore, this special edition of the Asian Journal of Andrology was proposed to report much of the new information related to varicoceles and, as a specific part of this project, the present article was developed as a comprehensive review of the evolution and refinements of the corrective procedures.

关键词： antegrade sclerosis laparoscopic varicocelectomy microsurgical varicocelectomy percutaneous embolization varicocelectorny

Hua's Theorem on Five Almost Equal Prime Squares

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Acta Mathematica Sinica,English Series 2006年第3期22卷 907-916页

作者： Guang Shi l Department of Mathematics Shandong University

In this paper we sharpen Hua＇s result by proving that each sufficiently large integer N congruent to 5 modulo 24 can be written as N=p1^2＋p2^2＋p3^2＋p4^2＋p5^2,with │pj-√N/5│≤U=N^1/2-1/28＋ε,where pj are primes.

关键词： Additive theory of prime numbers Circle method iterative method

A Pooling Method Developed for Use in Convolutional Neural Networks

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 751-770页

作者： Ìsmail Akgül Departmant of Computer Engineering Faculty of Engineering and ArchitectureErzincan Binali Yıldırım UniversityErzincan24002Turkiye

In convolutional neural networks,pooling methods are used to reduce both the size of the data and the number of parameters after the convolution of the *** methods reduce the computational amount of convolutional neural networks,making the neural network more *** pooling,average pooling,and minimum pooling methods are generally used in convolutional neural ***,these pooling methods are not suitable for all datasets used in neural network *** this study,a new pooling approach to the literature is proposed to increase the efficiency and success rates of convolutional neural *** method,which we call MAM(Maximum Average Minimum)pooling,is more interactive than other traditional maximum pooling,average pooling,and minimum pooling methods and reduces data loss by calculating the more appropriate pixel *** proposed MAM pooling method increases the performance of the neural network by calculating the optimal value during the training of convolutional neural *** determine the success accuracy of the proposed MAM pooling method and compare it with other traditional pooling methods,training was carried out on the leNet-5 model using CIFAR-10,CIFAR-100,and MNIST *** to the results obtained,the proposed MAM pooling method performed better than the maximum pooling,average pooling,and minimum pooling methods in all pool sizes on three different datasets.

关键词： Pooling convolutional neural networks deep learning

Modeling and Simulation of the Microstructure Evolution during a Cooling of Immiscible Alloys in the Miscibility Gap

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Journal of Materials Science & Technology 2002年第3期18卷 197-205页

作者： JiuzhouZHAO l.Ratke 等 TheInstituteofMetalResearch ChineseAcademyofSciencesShenyang110016China TheInstituteforSpaceSimulation DLRD-511470CologneGermany

The microstructure development during a cooling period of alloys being immiscible in the liquid state such as Al-Pb or AI-Bi has gained renewed scientific and technical interest during the last decades. Experiments have been performed to investigate the phase transformation kinetics in the liquid miscibility gap and numerical models have been developed to simulate and analyze the solidification process. The recently developed computational modeling techniques can, to some extent, be applied to describe the decomposition, the spatial phase separation and the microstructure evolution during a cooling period of an immiscible alloy through the miscibility gap. This article overviews the researches in this field.

关键词： Immiscible alloy Solidification Microstructure Modeling