检索结果-南通市图书馆

Journal of Modern Physics 2018年第14期9卷 2437-2442页

作者： I. kanazawa S. Nakamura R. Maeda Department of Physics Tokyo Gakugei University Tokyo Japan Institude of Multidisciplinary Research for Advanced Materials (IMRAM) Tohoku University Sendai Japan

We discuss hole-induced magnetic solitons and metal-insulator transition of transport properties in diluted magnetic semiconductors Ga1-xMnxAs from the standpoint of a field theoretical formulation, and analyze experimental data of transport properties, using the supersymmetry sigma formula and the effective Lagrangian of diffusion model.

关键词： Diluted Magnetic Semiconductor Magnetic Soliton Metal-Insulator transition Localization

Synergistic fibroblast optimization: a novel nature-inspired computing algorithm

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Information technology & Electronic Engineering 2018年第7期19卷 815-833页

作者： t t DHIVYAPRABHA P SUBASHINI M KRISHNAVENI Department of Computer Science Avinashilingam Institute for Home Science and Higher Education for Women

the evolutionary algorithm, a subset of computational intelligence techniques, is a generic population-based stochastic optimization algorithm which uses a mechanism motivated by biological concepts. Bio-inspired computing can implement successful optimization methods and adaptation approaches, which are inspired by the natural evolution and collective behavior observed in species, respectively. Although all the meta-heuristic algorithms have different inspirational sources, their objective is to find the optimum(minimum or maximum), which is problem-specific. We propose and evaluate a novel synergistic fibroblast optimization(SFO) algorithm, which exhibits the behavior of a fibroblast cellular organism in the dermal wound-healing process. Various characteristics of benchmark suites are applied to validate the robustness, reliability, generalization, and comprehensibility of SFO in diverse and complex situations. the encouraging results suggest that the collaborative and self-adaptive behaviors of fibroblasts have intellectually found the optimum solution with several different features that can improve the effectiveness of optimization strategies for solving non-linear complicated problems.

关键词： Synergistic fibroblast optimization (SFO) Fitness analysis Convergence Benchmark suite Monk's dataset

Performance Analysis of Intelligent Robust Facility Layout Design

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2017年第2期30卷 407-418页

作者： G MOSLEMIPOUR t S LEE Y t LOONG Department of Industrial Engineering Payame Noor University Faculty of Engineering and technology Multimedia University

Design of a robust production facility layout with minimum handling cost （MHC） presents an appropriate approach to tackle facility layout problems in a dynamic volatile environment, in which product demands randomly change in each planning period. the objective of the design is to find the robust facility layout with minimum total material handling cost over the entire multiperiod planning horizon. this paper proposes a new mathematical model for designing robust machine layout in the stochastic dynamic environment of manufacturing systems using quadratic assignment problem （QAP） formulation. In this investigation, product demands are assumed to be normally distributed random variables with known expected value, variance, and covariance that randomly change from period to period. the proposed model was verified and validated using randomly generated numerical data and benchmark examples. the effect of dependent product demands and varying interest rate on the total cost function of the proposed model has also been investigated. Sensitivity analysis on the proposed model has been performed. Dynamic programming and simulated annealing optimization algorithms were used in solving the modeled example problems.

关键词： Robust layout Dynamic stochastic environment Manufacturing system Dynamic programming

the expression of histamine receptors in skin lesions of MRL/MP-lpr/lpr mice

在线全文

学校读者我要写书评

暂无评论

The expression of histamine receptors in skin lesions of MRL...

A density functional study on some cyclic N_(10) isomers

the 8th International Congress on SLE

作者： Fukumi Furukawa Nobuo kanazawa takashi Yoshimasu Department of Dermatology Wakayama Medical UniversityJapan Department of Dermatology Wakayama Medical UniversityJapan Department of Dermatology Wakayama Medical UniversityJapan

＜正＞Systemic lupus erythematosus（SLE）is a chronic inflammatory disease accompanied with systemic organs disorder including skin changes,but the pathogenesis is not clearly understood, the skin lesion of MRL/MP-lpr...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Defence technology（防务技术） 2019年第2期15卷 154-161页

作者： Lemi türker Middle East technical University Department of Chemistry üniversiteler

Polynitrogen compounds, comprising only nitrogen atoms, are rare. they are considered as promising candidates of clean(green) high energy density materials because of their high energy content and their sole decomposition product is N_2. Extending the previous work which was on cyclic N_8 isomers, in this study some cyclic N_(10) isomers having 1-4 cycles are considered within the limitations of density functional theory at the levels of B3LYP/6-311++G(d,p) and B3LYP/cc-PVtZ. Some of the structures,including the monocyclic one, decompose by eliminating certain number of N_2 units while some remain intact. All the stable isomers(1-3, 6-8) investigated presently are highly endothermic that they are candidates for clean high energy materials. Certain quantum chemical properties, IR and UV-VIS spectra as well as the specific impulse values for the stable structures are reported.

关键词： Nitrogen Polynitrogen Density functional theory Isomers N10

Effect of magnesium on FOX-7 and its tautomers-A DFt treatment

在线全文

学校读者我要写书评

暂无评论

Defence technology（防务技术） 2018年第3期14卷 179-187页

作者： Lemi türker Middle East technical University Department of Chemistry üniversiteler

FOX-7 and its cisoid and transoid 1,5-tautomers as well as magnesium composites of all have been investigated quantum chemically within the restrictions of density functional theory(B3 LYP/6 e311ttG(d,p)). Certain physico-chemical and quantum chemical properties, energies, stabilities,calculated IR and UV-VIS spectra are discussed. the influence of magnesium atom is investigated. It has been found that in FOX-7 composites the magnesium is not a silent ingredient, but interacts with the organic constituents.

关键词： FOX-7 镁原子 DFt 物理化学药品性质稳定性成分外力

Exactness of penalization for exact minimax penalty function method in nonconvex programming

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2015年第4期36卷 541-556页

作者： t.ANtCZAK Faculty of Mathematics and Computer Science University of Lódz

the exact minimax penalty function method is used to solve a noncon- vex differentiable optimization problem with both inequality and equality constraints. the conditions for exactness of the penalization for the exact minimax penalty function method are established by assuming that the functions constituting the considered con- strained optimization problem are invex with respect to the same function η （with the exception of those equality constraints for which the associated Lagrange multipliers are negative these functions should be assumed to be incave with respect to η）. thus, a threshold of the penalty parameter is given such that, for all penalty parameters exceeding this threshold, equivalence holds between the set of optimal solutions in the considered constrained optimization problem and the set of minimizer in its associated penalized problem with an exact minimax penalty function. It is shown that coercivity is not suf- ficient to prove the results.

关键词： exact minimax penalty function method minimax penalized optimizationproblem exactness of penalization of exact minimax penalty function invex function,incave function

Interaction of tAtB with Cu and Cu^(+1). A DFt study

在线全文

学校读者我要写书评

暂无评论

Defence technology（防务技术） 2019年第1期15卷 27-37页

作者： Lemi türker Middle East technical University Department of Chemistry

Symmetric triaminotrinitrobenzene known as tAtB decomposes in contact with some heavy metals,such as copper. Presently, tAtB and some of its important tautomers are subjected to B3LYP/6-31G(d,p) level of treatment. Some molecular orbital energies have been obtained and compared. then. interaction of these species with Cu and Cu^+ are investigated. Although tAtB has been found to be affected little by either Cu or Cu^+, undergoing only some bond length changes and/or distortions, the resonance-assisted tautomers having one to three aci groups decompose by the influence of Cu atom. In each case, only one N-OH bond rupture occurs.

关键词： triaminitrinitrobenzene tAtB tautomerism Copper DFt Pull-push

Some remarks on the dynamical conformity of rock joints

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and technology 2018年第3期28卷 385-390页

作者： t.Ficker Faculty of Civil Engineering Brno University of Technology

A recently developed computerized method for assessing the rock joint coefficients is discussed. the performances of formerly introduced relative similarity indicators, along with the correlation coefficient, are subjected to critical analysis. these relative numerical indicators are replaced by two absolute indicators whose properties better describe surface textures of rock joints. the first absolute indicator results from the Fourier Matrix and evaluates wavy shapes of surfaces. the second absolute indicator quantifies the heights of surface reliefs, and is defined as the root mean square height of the surface outline. the behavior of the newly introduced numerical indicators are investigated by means of the deterministic periodic surface reliefs. the practical application of the new indicators is presented and the convenient performances of both the indicators are documented.

关键词： Rock joints Shear strength Joint rock coefficients Numerical indicators Computerized assessment

MHD UNStEADY FLOWS DUE tO NON—COAXIAL ROtAtIONS OF A DISK AND A FLUID At INFINItY

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Sinica 2003年第3期19卷 235-240页

作者： t.HAYAt IslamicInternationalEngineeringCollegec/oHeadOfficeIIMC OldSupremeCourtBuilding274PeshawarroadTheMallRawalpindiCanntPakistan

Exact analytical solution for flows of an electrically conducting fluid over an infinite oscillatory disk in the presence of a uniform transverse magnetic field is constructed. Both the disk and the fluid are in a state of non-coaxial rotation. Such a flow model has a great significance not only due to its own theoretical interest, but also due to applications to geophysics and engineering. the resulting initial value problem has been solved analytically by applying the Laplace transform technique and the explicit expressions for the velocity for steady and unsteady cases have been established. the analysis of the obtained results shows that the flow field is appreciably influenced by the applied magnetic field, the frequency and rotation parameters.

关键词： general periodic oscillation non-coaxial rotation magnetohydrodynamic flow Laplace transform