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Search Results: 1 - 10 of 9835 matches for " Haoran Bao "
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Quality Improvement Algorithm for Tetrahedral Mesh Based on Optimal Delaunay Triangulation  [PDF]
Shuli Sun, Haoran Bao, Minghui Liu, Yuan Yuan
Intelligent Information Management (IIM) , 2013, DOI: 10.4236/iim.2013.56021
Abstract:

The concept of optimal Delaunay triangulation (ODT) and the corresponding error-based quality metric are first introduced. Then one kind of mesh smoothing algorithm for tetrahedral mesh based on the concept of ODT is examined. With regard to its problem of possible producing illegal elements, this paper proposes a modified smoothing scheme with a constrained optimization model for tetrahedral mesh quality improvement. The constrained optimization model is converted to an unconstrained one and then solved by integrating chaos search and BFGS (Broyden-Fletcher-Goldfarb-Shanno) algorithm efficiently. Quality improvement for tetrahedral mesh is finally achieved by alternately applying the presented smoothing scheme and re-triangulation. Some testing examples are given to demonstrate the effectiveness of the proposed approach.

China’s Three Gorges Reservoir Area of Intelligent Substation Project Supervision Work Method Is Discussed in This Paper  [PDF]
Haoran Xiong
Journal of Power and Energy Engineering (JPEE) , 2016, DOI: 10.4236/jpee.2016.42004
Abstract:

The ecological environment promotes the construction of smart grids, while the smart substation is the key to the construction of smart grids. Based on the supervision of the Zigui 220 KV smart substation project in the Three Gorges Reservoir Region of China, this paper studies how to well create the supervision for the smart substation project construction. With the research focus of “four-control, two-management and one-coordination” in the supervision and according to the problems and experience in the project construction, some reasonable suggestions are put forward, and then the accumulated methods and experience by supervisors when they are engaged in the supervision for the smart substation project construction are summarized.

L'espace symétrique de Drinfeld et correspondance de Langlands locale I
Haoran Wang
Mathematics , 2014,
Abstract: Let $K$ be a finite extension of $\mathbb{Q}_p$. We study the geometry and cohomology of the tamely ramified cover of Drinfeld's symmetric space over $K.$ We prove, in a purely local way, that the cohomology in middle degree realises the local Langlands correspondence and local Jacquet-Langlands correspondence for the depth zero supercuspidal representations.
Sur la cohomologie des compactifications de variétés de Deligne-Lusztig
Haoran Wang
Mathematics , 2013,
Abstract: In this article, we study the \'etale cohomology of the compactification of Deligne-Lusztig varieties associated to a Coxeter element. We prove a result for the integral coefficients in the case of general linear group $GL_d$, and we conjecture that the similar result holds for general reductive groups.
L'espace de Drinfeld et correspondance de Langlands locale II
Haoran Wang
Mathematics , 2014,
Abstract: We study the geometry and the cohomology of the tamely ramified cover of Drinfeld's $p$-adic symmetric space. For this tame level, we prove, in a purely local way, most of a conjecture of Harris on the form of the $\ell$-adic cohomologies, as well as the torsion freeness of the integral cohomology. During the study, we obtain some results of independent interest on the coefficient systems over the Bruhat-Tits building associated to $GL_d(K).$
Black Phosphorus-Polymer Composites for Pulsed Lasers
Haoran Mu,Shenghuang Lin,Zhongchi Wang,Si Xiao,Pengfei Li,Yao Chen,Han Zhang,Haifeng Bao,Shu Ping Lau,Chunxu Pan,Dianyuan Fan,Qiaoliang Bao
Physics , 2015,
Abstract: Black phosphorus is a very promising material for telecommunication due to its direct bandgap and strong resonant absorption in near-infrared wavelength range. However, ultrafast nonlinear photonic applications relying on the ultrafast photo-carrier dynamics as well as optical nonlinearity in black phosphorus remain unexplored. In this work, we investigate nonlinear optical properties of solution exfoliated BP and demonstrate the usage of BP as a new saturable absorber for high energy pulse generation in fiber laser. In order to avoid the oxidization and degradation of BP, we encapsulated BP by polymer matrix which is optically transparent in the spectrum range of interest to form a composite. Two fabrication approaches were demonstrated to produce BP-polymer composite films which were further incorporated into fiber laser cavity as nonlinear media. BP shows very fast carrier dynamics and BP-polymer composite has a modulation depth of 10.6%. A highly stable Q-switched pulse generation was achieved and the single pulse energy of ~194 nJ was demonstrated. The ease of handling of such black phosphorus-polymer composite thin films affords new opportunities for wider applications such as optical sensing, signal processing and light modulation.
Circulating HFMD-Associated Coxsackievirus A16 Is Genetically and Phenotypically Distinct from the Prototype CV-A16
Wei Wei, Haoran Guo, Jingliang Li, Sangsang Ren, Zhenhong Wei, Wanguo Bao, Xiaoming Hu, Ke Zhao, Wenyan Zhang, Yulai Zhou, Fei Sun, Richard Markham, Xiao-Fang Yu
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0094746
Abstract: Human enteroviruses (HEV) have been linked to hand, foot, and mouth disease (HFMD) in the Pacific and Southeast Asia for decades. Many cases of HFMD have been attributed to coxsackievirus A16 (CV-A16, CA16), based on only partial viral genome determination. Viral phenotypes are also poorly defined. Herein, we have genetically and phenotypically characterized multiple circulating CV-A16 viruses from HFMD patients and determined multiple full-length sequences of these circulating viruses. We discovered that the circulating CV-A16 viruses from HFMD patients are genetically distinct from the proto-type CV-A16 G10. We have also isolated circulating CV-A16 viruses from hospitalized HFMD patients and compared their virological differences. Interestingly, circulating CV-A16 viruses are more pathogenic in a neonatal mouse model than is CV-A16 G10. Thus, we have found circulating recombinant forms of CV-A16 (CRF CV-A16) that are related to, but different from, the prototype CV-A16 G10 that have distinct biological phenotypes.
The endocrine regulation network of growth hormone synthesis and secretion in fish: Emphasis on the signal integration in somatotropes
WenSheng Li,HaoRan Lin
Science China Life Sciences , 2010, DOI: 10.1007/s11427-010-0084-6
Abstract: In teleosts, growth hormone (GH) production is governed by multiple neuroendocrine factors from the hypothalamus and other regulators from the pituitary and peripheral organs. Exploring the principles followed by pituitary somatotropes when differentiating and integrating the signals from these regulators at the cellular and intracellular level is essential for understanding the endocrine regulation network of growth hormone synthesis and secretion in fish. This paper discusses recent advances in the action mechanisms of GH regulation factors, including the neuroendocrine regulators, pituitary level factors and peripheral factors, primarily involved in their receptor systems as well as in post-receptor signal transduction pathways.
Modulation of presynaptic nAChRs on postsynaptic GABA receptor in optic tectum of juvenileXenopus
Hong Wang,Haoran Cai
Chinese Science Bulletin , 2003, DOI: 10.1007/BF03183241
Abstract: Using the blind patch-clamp technique with the whole-cell mode, we have studied the modulation of presynaptic receptor on postsynaptic γ-aminobutyric acid (GABA) receptor measuring miniature inhibitory postsynaptic currents (mIPSCs) in optic tectum ofXenopus during critical peroid. It was demonstrated that compared with mature neurons, mIPSCs recorded from immature neurons had smaller amplitude and longer decay time. mIPSCs are mediated by GABAa receptor. The nicotinic acetylcholine receptor agonists (carbachol, cytisine, nicotine, DMPP and so on) could increase the frequency of mIPSCs. The enhancement of mIPSCs frequency induced by nAChR agonists was calcium-dependent. However, the choline, a product of hydrolyzed acetylcholine, could not increase the frequency of mIPSCs. DH-β-E, a competitive antagonist of nAChR, blocked the increase of mIPSCs frequency induced by carbachol. Mecamyllamine, an α3β4 subtype of nAChR antagonist, also blocked the carbachol-induced enhancement of mIPSCs. On the other hand, MLA, α7 subtype of nAChR antagonist, had no effect on it. Thus, it seems that nAChR could presynaptically modulate the mIPSCs and α3β4 subtype of nAChR might be involved. But α7 nAChR subtype of nAChR would not be involved. The modulation is calciumdependent. Meanwhile, we found that Ca2+-free solution could elicit giant PSCs. The frequency of mIPSCs also is related with the level of HP.
Phase Transition and Acoustic Localization in Arrays of Air-Bubbles in Water
Zhen Ye,Haoran Hsu
Physics , 2000, DOI: 10.1063/1.1403659
Abstract: Wave localization is a ubiquitous phenomenon. It refers to situations that transmitted waves in scattering media are trapped in space and remain confined in the vicinity of the initial site until dissipated. Here we report a phase transition from acoustically extended to localized states in arrays of identical air-filled bubbles in water. It is shown that the acoustic localization in such media is coincident with the complete band gap of a lattice arrangement of the air-bubbles. When the localization or the band gap occurs, a peculiar collective behavior of the bubbles appears.
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