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951.
A thermodynamic model for site preferences of solute atoms in ordered binary phases is applied in this paper for substitutional
and interstitial sites of the Cu3Au, or L12, structure. Site preferences are found to depend on formation energies of combinations of elementary point defects and on
energies for transfer of solutes among different sites. The composition dependence in compounds having a wide phase field
is examined in detail. A phenomenology of site preference behavior is outlined for regular lattice sites as well as for non-lattice
sites such as grain boundaries.
This revised version was published online in September 2006 with corrections to the Cover Date. 相似文献
952.
用改进的格点哈密顿量和截断本征方程法计算2+1维QCD 0^ 胶球质量,结果显示较好的标度行为。 相似文献
953.
Ming Sheng Ying 《数学学报(英文版)》2001,17(1):89-102
We use a semantical method of complete residuated lattice-valued logic to give a generalization of fuzzy topology as a partial
answer to a problem by Roser and Turquette.
This work is supported by the National Foundation for Distinguished Young Scholars (Grant No: 69725004),
Research and Development Project of High-Technology (Grant No: 863-306-ZT06-04-3) and Foundation of
Natural Sciences (Grant No: 69823001) of China and Fok Ying-Tung Education Foundation 相似文献
954.
对于集合X上的任一非平凡等价关系E,本文考察了半群TE(x)上的同余C*(E),并证明了C*(E)是TE(X)的同余格的完全子格[C(E),Ca(E)]中的唯一原子. 相似文献
955.
A lattice Boltzmann equation model has been developed by using the equilibrium distribution function of the Maxwell-Boltzmann-like form, which is third order in fluid velocity uα. The criteria of energy conservation between the macroscopic physical quantities and the microscopic particles are introduced into the model, thus the thermal hydrodynamic equations containing the effect of buoyancy force can be recovered in terms of the Taylor and Chapman-Enskog asymptotic expansion methods. The two-dimensional thermal convection phenomena in a square cavity and between two concentric cylinders have been calculated by implementing a heat flux boundary condition. Both numerical results are in good agreement with the conventional numerical results. 相似文献
956.
伪补分配格的同余理想与同余关系 总被引:5,自引:1,他引:4
王尊全 《纯粹数学与应用数学》2001,17(4):363-367
L是完备的伪补分配格,I是L的同余理想,本文得到以下结果:⑴θ是L的以I为核的最大同余关系的条件。⑵L的以I为核的同余关系是唯一的充分必要条件。⑶L的同余理想与同余关系之间有一一对应关系的充分必要条件。 相似文献
957.
Certain Partial Orders on Semigroups 总被引:1,自引:0,他引:1
Mario Petrich 《Czechoslovak Mathematical Journal》2001,51(2):415-432
Relations introduced by Conrad, Drazin, Hartwig, Mitsch and Nambooripad are discussed on general, regular, completely semisimple and completely regular semigroups. Special properties of these relations as well as possible coincidence of some of them are investigated in some detail. The properties considered are mainly those of being a partial order or compatibility with multiplication. Coincidences of some of these relations are studied mainly on regular and completely regular semigroups. 相似文献
958.
构造了用于非线性化学波的格子Boltzmann模型.通过设置无对流速度场,使用多重尺度和Chapman Enskog展开,得到了平衡态分布函数的各向同性解.算例考虑了用划痕起搏,在ε2尺度上给出了Selkov系统的模拟结果,再现了远离热力学平衡态的螺旋波结构的经典结果,并与传统数值方法及实验结果进行了比较. 相似文献
959.
We numerically calculate the topological charge of the gauge configurations on a finite lattice by the fermionic method with overlap fermions. By using the lattice index theorem, we identify the index of the massless overlap fermion operator to the topological charge of the background gauge configuration. The resulting topological susceptibility χ is in good agreement with the anticipation made by Witten and Veneziano. 相似文献
960.