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Search Results: 1 - 10 of 2157 matches for " YaoZhuang Nie "
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Alloy Gene Gibbs Energy Partition Function and Equilibrium Holographic Network Phase Diagrams of AuCu-Type Sublattice System  [PDF]
Youqing Xie, Xiaobo Li, Xinbi Liu, Yaozhuang Nie, Hongjian Peng
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2013, DOI: 10.4236/ijcns.2013.610045
Abstract: Taking AuCu-sublattice system as an example, we present two discoveries and a method. First, the alloy gene sequences are the central characteristic atom sequences in the basic coordination cluster sequences. Second, the transmission mode of the information about structures and properties of the alloy genes is described by the alloy gene Gibbs energy partition function. The most valuable method in the system sciences is “the whole obtained from a few parts”. We have established the alloy gene database and holographic alloy positioning system of the Au-Cu system, as well as alloy gene Gibbs energy partition function and equilibrium holographic network phase diagrams of the AuCu-type sublattice system. It means that a standard way for researchers to share predictive algorithms and computational methods may be produced during designing advanced alloys.
Alloy Gene Sequence Project and System Science Philosophy  [PDF]
Youqing Xie, Xiaobo Li, Xinbi Liu, Hongjian Peng, Yaozhuang Nie
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2017, DOI: 10.4236/ijcns.2017.1012019
Abstract: System Science Philosophy is a knowledge system constructed of universal principle and law sequences. Alloy gene is a characteristic atom existing in the center of coordination cluster and occupying the lattice point of a lattice cell, and carries holographic information about valence electron structure, physical and thermodynamic properties obtained by alloy gene theory. Alloy gene potential energy curve function has developed traditional atom pair interaction potential functions into many atoms’ interaction function associated with valence electron structure, bond length, bond energy, which makes alloy gene Gibbs energy function can be established. Alloy gene Gibbs energy transmissive function has developed traditional partition function. Its equilibrium and sub-equilibrium transmissive modes produce alloy holographic network positioning bank, which is operable platform to achieve transformation from “trial and error” method to the “whole obtained from a few part” law for getting advanced alloys. It has become possible to launch alloy gene sequence project.
Low temperature thermodynamic study of the stable and metastable phases of vanadium
XiaoBo Li,YouQing Xie,YaoZhuang Nie,HongJian Peng
Chinese Science Bulletin , 2007, DOI: 10.1007/s11434-007-0471-y
Abstract: The low temperature thermodynamics of the stable phase of vanadium has been assessed by the polynomial and Debye models from the experimental data available in literature. By means of the constrained nonlinear least squares curve fitting arithmetic, two sets of parameter values have been determined. Expressions of the thermodynamic functions C p(T) and G(T)-H (298.15 K) at 0–298.15 K are presented. The low temperature thermodynamics of the metastable phase of vanadium can only be extrapolated by the Debye model. The expression of the thermodynamic function C p(T) at 0–298.15 K is presented.
Strain induced topological phase transitions in monolayer honeycomb structures of group-V binary compounds
Yaozhuang Nie,Mavlanjan Rahman,Daowei Wang,Can Wang,Guanghua Guo
Physics , 2015, DOI: 10.1038/srep17980
Abstract: We present first-principles calculations of electronic structures of a class of two-dimensional (2D) honeycomb structures of group-V binary compounds. Our results show these new 2D materials are stable semiconductors with direct or indirect band gaps. The band gap can be tuned by applying lattice strain. During their stretchable regime, they all exhibit metal-indirect gap semiconductor-direct gap semiconductor-topological insulator (TI) transitions with increasing strain from negative (compressive) to positive (tensile) values. The topological phase transition results from the band inversion at $\Gamma$ point due to lattice strain and is irrelevant to spin-orbit coupling (SOC).
Magnonic band structure of domain wall magnonic crystals
D. Wang,Zhi-xiong Li,Yaozhuang Nie,Xi-guang Wang,Guang-hua Guo
Physics , 2014,
Abstract: Magnonic crystals are prototype magnetic metamaterials designed for the control of spin wave propagation. Conventional magnonic crystals are composed of single domain elements. If magnetization textures, such as domain walls, vortices and skyrmions, are included in the building blocks of magnonic crystals, additional degrees of freedom over the control of the magnonic band structure can be achieved. We theoretically investigate the influence of domain walls on the spin wave propagation and the corresponding magnonic band structure. It is found that the rotation of magnetization inside a domain wall introduces a geometric vector potential for the spin wave excitation. The corresponding Berry phase has quantized value $4 n_w \pi$, where $n_w$ is the winding number of the domain wall. Due to the topological vector potential, the magnonic band structure of magnonic crystals with domain walls as comprising elements differs significantly from an identical magnonic crystal composed of only magnetic domains. This difference can be utilized to realize dynamic reconfiguration of magnonic band structure by a sole nucleation or annihilation of domain walls in magnonic crystals.
First--Principles Study of the Thermal Properties of Metal Zr
金属Zr热力学性质的第一原理研究

NIE Yaozhuang,XIE Youqing,LI Xiaobo,PENG Hongjian,
聂耀庄
,谢佑卿 李小波,彭红建

金属学报 , 2007,
Abstract: A first-principles study of the thermal properties of hcp metal Zr using the pseudopo- tential plane-wave method in the framework of the density-functional theory and density-functional perturbation theory is reported.The phonon spectra and static total energies are calculated for Zr with different lattice parameters,and free energies at different temperatures are obtained in the quasihar- monic approximation according to the criterion of free energy minimum.The temperature-dependent coefficients of thermal expansion,bulk modulus and specific heat at constant volume(pressure)are presented.Calculated results for the thermal properties are in good agreement with the available ex- perimental data in a wide range of temperature.The coefficients of thermal expansion obtained from first-principles approach and Debye-Gr(?)neisen model are compared.The electronic contribution to the specific heat is found to be not negligible at high temperature.
Comprehensive Research on the Origin of the Solar System Structure by Quantum-like Model  [PDF]
Qingxiang Nie
International Journal of Astronomy and Astrophysics (IJAA) , 2011, DOI: 10.4236/ijaa.2011.12008
Abstract: A quantum-like model of gravitational system is introduced to explore the formation of the solar system structure. In this model, the chaos behavior of a large number of original nebular particles in a gravitational field can be described in terms of the wave function satisfying formal Schrödinger equation, in which the Planck constant is replaced by a constant on cosmic scale. Numerical calculation shows that the radial distribution density of the particles has the character of wave curves with decreasing amplitudes and elongating wavelengths. By means of this model, many questions of the solar system, such as the planetary distance, mass, energy, angular momentum, the distribution of satellites, the structure of the planetary rings, and the asteroid belt and the Kuiper belt etc., can be explained in reason. In addition, the abnormal rotations of Venus and Mercury can be naturally explained by means of the quantum-like model.
A Study on the Second-Person Narrative in Jennifer Egan’s Black Box  [PDF]
Baoyu Nie
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.310008
Abstract: Notable for the second-person Twitter narrative, Jennifer Egan’s 2012 short science fiction Black Box is one of the most triumphant and fully-fledged fictions written in the form of new media. This paper mainly explores the second-person narrative employed in Black Box, pointing out that the second-person narrative leads the reader to participate in the story, allowing the reader to sense the same feelings as the protagonist does. From the second person’s perspective, Egan expresses her concerns and worries about the security of the American security as well as the whole world in the post-”9·11” period and at the same time she embraces the virtues and pleasures of traditional storytelling delivered through a wholly new digital format. This paper concludes that Black Box is perhaps one of the boldest experiments of narrative form and it is a direct exploration into the contemporary image culture.
When Internal Control Meets Internal Audit: Conflict or Combine?  [PDF]
Jingwen Nie
Open Journal of Accounting (OJAcct) , 2017, DOI: 10.4236/ojacct.2017.62004
Abstract: The long-term development of enterprises not only need the escort of internal control, but also can’t do without the monitoring and early warning of internal audit. The relationship between internal control and internal audit is simple and mysterious. When the company internal control meets internal audit, is there conflict brings a lose-lose situation or combination brings a win-win complexion? This article explored the internal control and internal audit of China International Marine Containers (Group) Ltd. (CIMC), and found that the combination of the two makes CIMC steady and quickly develop, and it finally becomes a world-class enterprise.
Permanence and Global Stability for a Non-Autonomous Predator-Prey Model with Modified Leslie-Gower and Holling-Type II Schemes with Delays  [PDF]
Lin Hu, Linfei Nie
Applied Mathematics (AM) , 2011, DOI: 10.4236/am.2011.21006
Abstract: In this paper, a nonautonomous predator-prey system based on a modified version of the Leslie-Gower scheme and Holling-type II scheme with delayed effect is investigated. The general criteria of integrable form on the permanence are established. By constructing suitable Lyapunov functionals, a set of easily verifiable sufficient conditions are derived for global stability of any positive solutions to the model
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