The interaction between a screw dislocation and an elliptical hole with two asymmetrical cracks in a one-dimensional(1 D) hexagonal quasicrystal with piezoelectric effect is considered. A general formula of the genera...The interaction between a screw dislocation and an elliptical hole with two asymmetrical cracks in a one-dimensional(1 D) hexagonal quasicrystal with piezoelectric effect is considered. A general formula of the generalized stress field, the field intensity factor, and the image force is derived, and the special cases are discussed. Several numerical examples are given to show the effects of the material properties and the dislocation position on the field intensity factors and the image forces.展开更多
In this paper we analyze connectivity of one-dimensional Vehicular Ad Hoc Networks where vehicle gap distribution can be approximat- ed by an exponential distribution. The probabilities of Vehicular Ad Hoc Network con...In this paper we analyze connectivity of one-dimensional Vehicular Ad Hoc Networks where vehicle gap distribution can be approximat- ed by an exponential distribution. The probabilities of Vehicular Ad Hoc Network connectivity for difference cases are derived. Furthermore we proof that the nodes in a sub-interval [z1, z1 ＋ △z] of interval [0,z],z 〉 0 where all the nodes are independently uniform distributed is a Poisson process and the relationship of Vehicle Ad hoc Networks and one-dimensional Ad Hoc networks where nodes independently uniform distributed in [zl, z1 ＋ △z] is explained. The analysis is validated by computing the probability of network connectivity and comparing it with the Mont Carlo simu- lation results.展开更多
Herein,we report the development of a facile hydrothermal method to fabricate plum and octahedronlike cobalt tetroxide(Co_(3)O_(4))particles decorated with multi-walled carbon nanotube(MWCNT)onedimensional(1D)hybrid s...Herein,we report the development of a facile hydrothermal method to fabricate plum and octahedronlike cobalt tetroxide(Co_(3)O_(4))particles decorated with multi-walled carbon nanotube(MWCNT)onedimensional(1D)hybrid structures.The morphology of Co_(3)O_(4)particles on MWCNTs was controlled by changing the volume ratios of a mixed solvent of ethylene glycol and water.The Co_(3)O_(4)particles grew on and across MWCNTs,resulting in structures with necklace-like morphology.The assembled MWCNTs/Co_(3)O_(4)composites were used to detect acetone vapors and showed enhanced sensing performances than a pure MWCNT-based sensor.This enhanced gas sensing performance could be due to the structural integrity of the hybrid nanostructure as well as the surface defects and catalytic Co cations on the surfaces of MWCNT and Co_(3)O_(4)octahedra,respectively.展开更多
The dynamical process of interaction of one-dimensional helium with an intense ultrashort laser pulse has hen studied with a classical theory. Using the ensemble average method in the classical theory, the probability...The dynamical process of interaction of one-dimensional helium with an intense ultrashort laser pulse has hen studied with a classical theory. Using the ensemble average method in the classical theory, the probability evolutions of the single and double ionization for the helium are simulated and the simulation results are analyzed.展开更多
We present the development of a non-reflecting boundary condition,based on the Local One-Dimensional Inviscid(LODI)approach,for Lattice Boltzmann Models working with multi-speed stencils.We test and evaluate the LODI ...We present the development of a non-reflecting boundary condition,based on the Local One-Dimensional Inviscid(LODI)approach,for Lattice Boltzmann Models working with multi-speed stencils.We test and evaluate the LODI implementation with numerical benchmarks,showing significant accuracy gains with respect to the results produced by a simple zerogradient condition.We also implement a simplified approach,which allows handling the unknown distribution functions spanning several layers of nodes in a unified way,still preserving a comparable level of accuracy with respect to the standard formulation.展开更多
基金Project supported by the National Natural Science Foundation of China(Nos.11962026,11462020,11862021,and 11502123)the Inner Mongolia Natural Science Foundation of China(Nos.2017MS0104 and NJZY18022)。
文摘The interaction between a screw dislocation and an elliptical hole with two asymmetrical cracks in a one-dimensional(1 D) hexagonal quasicrystal with piezoelectric effect is considered. A general formula of the generalized stress field, the field intensity factor, and the image force is derived, and the special cases are discussed. Several numerical examples are given to show the effects of the material properties and the dislocation position on the field intensity factors and the image forces.
基金supported by National Science Fund for Distinguished Young Scholars (No.60525110)National 973 Program (No. 2007CB307100, 2007CB307103)+2 种基金National Natural Science Foundation of China (No. 60902051)Chinese Universities Scientific Fund (BUP-T2009RC0505)Development Fund Project for Electronic and Information Industry (Mobile Service and Application System Based on 3G)
文摘In this paper we analyze connectivity of one-dimensional Vehicular Ad Hoc Networks where vehicle gap distribution can be approximat- ed by an exponential distribution. The probabilities of Vehicular Ad Hoc Network connectivity for difference cases are derived. Furthermore we proof that the nodes in a sub-interval [z1, z1 ＋ △z] of interval [0,z],z 〉 0 where all the nodes are independently uniform distributed is a Poisson process and the relationship of Vehicle Ad hoc Networks and one-dimensional Ad Hoc networks where nodes independently uniform distributed in [zl, z1 ＋ △z] is explained. The analysis is validated by computing the probability of network connectivity and comparing it with the Mont Carlo simu- lation results.
基金supported by the Natural Science Foundation Committee(NSFC,Grant No.61673191)the Science and Technology Development Plan of Jilin Province(No.20180414025GH)。
文摘Herein,we report the development of a facile hydrothermal method to fabricate plum and octahedronlike cobalt tetroxide(Co_(3)O_(4))particles decorated with multi-walled carbon nanotube(MWCNT)onedimensional(1D)hybrid structures.The morphology of Co_(3)O_(4)particles on MWCNTs was controlled by changing the volume ratios of a mixed solvent of ethylene glycol and water.The Co_(3)O_(4)particles grew on and across MWCNTs,resulting in structures with necklace-like morphology.The assembled MWCNTs/Co_(3)O_(4)composites were used to detect acetone vapors and showed enhanced sensing performances than a pure MWCNT-based sensor.This enhanced gas sensing performance could be due to the structural integrity of the hybrid nanostructure as well as the surface defects and catalytic Co cations on the surfaces of MWCNT and Co_(3)O_(4)octahedra,respectively.
文摘The dynamical process of interaction of one-dimensional helium with an intense ultrashort laser pulse has hen studied with a classical theory. Using the ensemble average method in the classical theory, the probability evolutions of the single and double ionization for the helium are simulated and the simulation results are analyzed.
文摘We present the development of a non-reflecting boundary condition,based on the Local One-Dimensional Inviscid(LODI)approach,for Lattice Boltzmann Models working with multi-speed stencils.We test and evaluate the LODI implementation with numerical benchmarks,showing significant accuracy gains with respect to the results produced by a simple zerogradient condition.We also implement a simplified approach,which allows handling the unknown distribution functions spanning several layers of nodes in a unified way,still preserving a comparable level of accuracy with respect to the standard formulation.
