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Search Results: 1 - 10 of 44978 matches for " Liang He "
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Based on the Complete CDA Standard Clinical Document Editor Research and Development  [PDF]
Jun He, Liang Xiao
Journal of Software Engineering and Applications (JSEA) , 2013, DOI: 10.4236/jsea.2013.63B017
Abstract: The design and development of a kind of fully comply with an HL7 standard clinical CDA document editor for generating standard CDA standard XML file, and can extract the other clinical commercial software generating clinical document XML- related content, and modified into standard CDA XML documents, used for data exchange, data mining and clinical decision support.
Positive Solutions for the Initial Value Problem of Fractional Evolution Equations
He Yang,Yue Liang
Abstract and Applied Analysis , 2013, DOI: 10.1155/2013/428793
Lihua Lu,Liang He
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810013310
Abstract: In the title compound, C21H15NO3, the dihedral angle formed between the aromatic ring systems is 71.50 (3)°. The methoxy group is coplanar with the benzene ring to which it is connected, the C—O—C—C torsion angle being 6.37 (17)°. The observed conformation is stabilized by an intramolecular N—H...O hydrogen bond, generating an S(6) ring.
Positive solutions for Neumann boundary value problems of nonlinear second-order integro-differential equations in ordered Banach spaces
Yang He,Liang Yue
Journal of Inequalities and Applications , 2011,
Abstract: The paper deals with the existence of positive solutions for Neumann boundary value problems of nonlinear second-order integro-differential equations - u ″ ( t ) + M u ( t ) = f ( t , u ( t ) , ( S u ) ( t ) ) , 0 < t < 1 , u ′ ( 0 ) = u ′ ( 1 ) = θ and u ″ ( t ) + M u ( t ) = f ( t , u ( t ) , ( S u ) ( t ) ) , 0 < t < 1 , u ′ ( 0 ) = u ′ ( 1 ) = θ in an ordered Banach space E with positive cone K, where M > 0 is a constant, f : [0, 1] × K × K → K is continuous, S : C([0, 1], K) → C([0, 1], K) is a Fredholm integral operator with positive kernel. Under more general order conditions and measure of noncompactness conditions on the nonlinear term f, criteria on existence of positive solutions are obtained. The argument is based on the fixed point index theory of condensing mapping in cones. Mathematics Subject Classification (2000): 34B15; 34G20.
Magnetic properties of a spin-3 Chromium condensate
Liang He,Su Yi
Physics , 2009, DOI: 10.1103/PhysRevA.80.033618
Abstract: We study the ground state properties of a spin-3 Cr condensate subject to an external magnetic field by numerically solving the Gross-Piteavskii equations. We show that the widely adopted single-mode approximation is invalid under a finite magnetic field. In particular, a phase separation like behavior may be induced by the magnetic field. We also point out the possible origin of the phase separation phenomenon.
Degeneracy analysis for a super cell of a photonic crystal and its application to the creation of band gaps
Liang Wu,Sailing He
Physics , 2002, DOI: 10.1103/PhysRevE.67.026612
Abstract: A method is introduced to analyze the degeneracy properties of the band structure of a photonic crystal making use of the super cells. The band structure associated with a super cell of a photonic crystal has degeneracies at the edge of the Brillouin zone if the photonic crystal has some kind of point group symmetry. Both E-polarization and H-polarization cases have the same degeneracies for a 2-dimensional (2D) photonic crystal. Two theorems are given and proved. These degeneracies can be lifted to create photonic band gaps by changing the transform matrix between the super cell and the smallest unit cell. The existence of the photonic band gaps for many known 2D photonic crystals is explained through the degeneracy analysis.
Supersolid Phase of Cold Fermionic Polar Molecules in 2D Optical Lattices
Liang He,Walter Hofstetter
Physics , 2011, DOI: 10.1103/PhysRevA.83.053629
Abstract: We study a system of ultra-cold fermionic polar molecules in a two-dimensional square lattice interacting via both the long-ranged dipole-dipole interaction and a short-ranged on-site attractive interaction. Singlet superfluid, charge density wave, and supersolid phases are found to exist in the system. We map out the zero temperature phase diagram and find that the supersolid phase is considerably stabilized by the dipole-dipole interaction and thus can exist over a large region of filling factors. We study the melting of the supersolid phase with increasing temperature, map out a finite temperature phase diagram of the system at fixed filling, and determine the parameter region where the supersolid phase can possibly be observed in experiments.
On Rainbow-$k$-Connectivity of Random Graphs
Jing He,Hongyu Liang
Computer Science , 2010,
Abstract: A path in an edge-colored graph is called a \emph{rainbow path} if all edges on it have pairwise distinct colors. For $k\geq 1$, the \emph{rainbow-$k$-connectivity} of a graph $G$, denoted $rc_k(G)$, is the minimum number of colors required to color the edges of $G$ in such a way that every two distinct vertices are connected by at least $k$ internally disjoint rainbow paths. In this paper, we study rainbow-$k$-connectivity in the setting of random graphs. We show that for every fixed integer $d\geq 2$ and every $k\leq O(\log n)$, $p=\frac{(\log n)^{1/d}}{n^{(d-1)/d}}$ is a sharp threshold function for the property $rc_k(G(n,p))\leq d$. This substantially generalizes a result due to Caro et al., stating that $p=\sqrt{\frac{\log n}{n}}$ is a sharp threshold function for the property $rc_1(G(n,p))\leq 2$. As a by-product, we obtain a polynomial-time algorithm that makes $G(n,p)$ rainbow-$k$-connected using at most one more than the optimal number of colors with probability $1-o(1)$, for all $k\leq O(\log n)$ and $p=n^{-\epsilon(1\pm o(1))}$ for some constant $\epsilon\in[0,1)$.
Computer Program Calculation for Distortion of Wide-Band Track and Hold Amplifier  [PDF]
Hailang Liang, Jin He, Xiaoan Zhu, Xiaomeng He, Cheng Wang, Lin He, Gui Liu, Qingxing He, Caixia Du
Journal of Computer and Communications (JCC) , 2013, DOI: 10.4236/jcc.2013.16001

Tow different computer calculation methods for distortion of the wide-band diode bridge track and hold amplifier (THA) are presented based on a high frequency Schottky diode model. One of the computer programs calculates the distortion of weekly nonlinear THA based on the KCL and the nonlinear-current method. The other calculates the weekly nonlinear distortion by using a Volterra series method and a nodal formulation. Comparative calculation results for the diode bridge THA have shown good agreement with these two computer program calculation methods, whereas the overall computational efficiency of the nonlinear-current method is better than that of the nodal formulation method in a special evaluation.

Treatment and Recycling of Wastewater by Submerged Hollow Fiber Membrane  [PDF]
Dewen He, Huangnian Zhou, Lei Liu, Dingmin Liang, Lu Du
Natural Resources (NR) , 2011, DOI: 10.4236/nr.2011.22009
Abstract: In this study, the effects of experimental conditions including the MBR equipped novel device and different operating modes on permeate flux were studied. The results show that the MBR equipped novel device can reduce the resistance and enhance the flux, decreasing the total resistance ( Rt = 9.649) to 5.962 and increasing the permeate flux to 15 - 20 L/m2hr. The permeate flux of intermittent operating mode is more than that of continuous operation and the value of the permeate flux is between 15 l/m2hr and 20 l/m2hr. The MBR equipped novel device which adopting intermittent operating mode is most effective in this study and the value of permeate flux is between 20 l/m2hr and 25 l/m2hr.
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