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Search Results: 1 - 10 of 13923 matches for " Xinghua Xue "
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Current Research and Prospect of Dendrobenthamia hongkongensis in China  [PDF]
Longyi Yuan, Peng Lang, Xinghua Xue
Natural Resources (NR) , 2013, DOI: 10.4236/nr.2013.46053
Abstract:

Dendrobenthamia hongkongensis is an excellent ornamental tree species, which has a wide range in germplasm resources distribution and rich varieties within species in China and has also a great development prospect of the new superior species for city landscape. So it is necessary for us to do much research for the development and utilization of this species. According to the latest existing research data of D. hongkongensis, the research achievements of D. hongkongensis in Germplasm resource distribution, bio-ecological habits, breeding and cultivation techniques and so on have been analyzed and summed up. On the other hand, its Ornamental value has been utilized in the modern landscape. At the same time, Edible and Medicinal value of D. hongkongensis has been discussed in the paper as well as Material value of D. hongkongensis. In addition, the future aspects of physiological and ecological research, domestication and breeding new varieties, resource protection and landscape application of D.

Classification of Single Traveling Wave Solutions to the Generalized Strong Nonlinear Boussinesq Equation without Dissipation Terms in P = 1  [PDF]
Xinghua Du
Journal of Applied Mathematics and Physics (JAMP) , 2014, DOI: 10.4236/jamp.2014.23006
Abstract:

By the complete discrimination system for polynomial method, we obtained the classification of single traveling wave solutions to the generalized strong nonlinear Boussinesq equation without dissipation terms in p=1.

The Expression of hTERT mRNA and p16 Protein in Non-small Cell Lung Cancer
Lei XIAN,Huafu ZHOU,Xinghua ZHANG,Bangde XUE
Chinese Journal of Lung Cancer , 2009,
Abstract: Background and objective hTERT and p16 are involved in oncogenesis and development of tumor. The aim of this study is to investigate the expression of human telomerase reverse transcriptase (hTERT) and p16 in non-small cell lung cancer (NSCLC). Methods The quantitative reverse transcription-polymerase chain reaction (RT-qPCR) and immunohistochemistry were applied to detect the hTERT and p16 in tissue of 21 cases of lung benign diseases and 117 of non-small cell lung cancer and adjacent tissues, respectively. Results hTERT mRNA levels from NSCLC in 117 patients and normal lung tissue in 21 normal controls were 2.937±0.836 and 2.042±0.378, respectively (t=-5.242, P < 0.01). Expression of p16 protein was observed in 85.7% of normal tissues, while 47.9% of lung cancer tissues showed p16 protein expression (P=0.004). The expression of hTERT mRNA was significantly correlated with the histology (P < 0.05); the expression of p16 protein was significantly correlated with the clinical stage, degree of differentiation and lymph node metastasis (P < 0.05). The significant correlation between the expression of hTERT and p16 (P < 0.05). Conclusion The hTERT may be useful in clinical diagnosis of NSCLC. Expression of hTERT and p16 is related to the carcinogenesis and development of NSCLC.
Study on Delaunay Triangulation with the Islets Constraints  [PDF]
Dong Wei, Xinghua Liu
Intelligent Information Management (IIM) , 2010, DOI: 10.4236/iim.2010.26045
Abstract: Aiming at Delaunay triangulation with islets constrains in terrain simulation. A general Delaunay triangulation algorithm for constrained data set with islets is proposed. The algorithm firstly constructs Constrained Delaunay Triangulation with constraint polygons which are inner boundary of islets, then according to topological relations within edge, surface, arc segment, applies bidirectional search to find the triangle in islet, lastly it carries on certain corresponding processing to complete the Delaunay triangulation algorithm with islets. The analyses show the algorithm simple, fast speed. The algorithm can be used in 3-D terrain vision.
Classifying Traveling Wave Solutions to the Zhiber-Shabat Equation  [PDF]
Chunyan Wang, Xinghua Du
Journal of Applied Mathematics and Physics (JAMP) , 2013, DOI: 10.4236/jamp.2013.12001
Abstract: By the complete discrimination system for polynomials, we classify exact traveling wave solutions to the Zhiber-Shabat equation, and compute some new traveling wave solutions.
Classification of Single Traveling Wave Solutions to the Generalized Kadomtsev-Petviashvili Equation without Dissipation Terms in p = 2  [PDF]
Xinghua Du, Hua Xin
Advances in Pure Mathematics (APM) , 2013, DOI: 10.4236/apm.2013.39A1001
Abstract:

By using the complete discrimination system for the polynomial method, the classification of single traveling wave solutions to the generalized Kadomtsev-Petviashvili equation without dissipation terms in p=2 is obtained.

Diagnostic experiments for transport mechanisms of suspended sediment discharged from the Yellow River in the Bohai Sea

LI Guosheng,XUE Xinghua,LIU Ying,WANG Hailong,LIAO Heping,

地理学报 , 2010,
Abstract: Five diagnostic experiments with a 3D baroclinic hydrodynamic and sediment transport model ECOMSED in couple with the third generation wave model SWAN and the Grant–Madsen bottom boundary layer model driven by the monthly sediment load of the Yellow River, were conducted to separately diagnose effects of different hydrodynamic factors on transport of suspended sediment discharged from the Yellow River in the Bohai Sea. Both transport and spatio-temporal distribution of suspended sediment concentration in the Bohai Sea were numerially simulated. It could be concluded that suspended sediment discharged from the Yellow River cannot be delivered in long distance under the condition of tidal current. Almost all of sediments from the Yellow River are deposited outside the delta under the condition of wind-driven current, and only very small of them are transported faraway. On the basis of wind forcing, sediments from the Yellow River are mainly transported north-northwestward, and others which are first delivered to the Laizhou Bay are continuously moved northward. An obvious 3D structure characteristic of sediment transport is produced in the wind-driven and tide-induced residual circulation condition. Transport patterns at all layers are generally consistent with circulation structure, but there is apparent deviation between the depth-averaged sediment flux and the circulation structure. The phase of temporal variation of sediment concentration is consistent with that of the bottom shear stress, both of which are proved to have a ten-day cycle in wave and current condition.
Convergence on the iteration of Halley family in weak conditions
Xinghua Wang
Chinese Science Bulletin , 1997, DOI: 10.1007/BF03182614
Abstract:
Asymptotic Stability Analysis and Optimality Algorithm for Uncertain Neutral Systems with Saturation
Xinghua Liu
ISRN Applied Mathematics , 2014, DOI: 10.1155/2014/805798
Abstract: The certain and uncertain neutral systems with time-delay and saturating actuator are considered in this paper. In order to analyse and optimize the system, auxiliary functions are presented based on additive decomposition approach and the relationship among them is discussed. As the novel stability criterion, two sufficient conditions are obtained for asymptotic stability of the neutral systems. Furthermore, the paper gives the stability analysis algorithm and optimality algorithm to optimize the result. Finally, from the two-stage dissolution tank of solid caustic soda in a chemical plant, three numerical examples are implemented to show the effectiveness of the proposed method. 1. Introduction Delay is often inevitable in various practical systems; examples include population ecology [1], steam or water pipes, heat exchanges [2], and many others [3–5]. In the control engineering language, these delays can be categorized as state delay, input or output delay (retarded systems), delay in the state derivative (neutral systems), and so forth. Guaranteeing the stability of systems with delay is one core design objective both in theory and in practice. Particularly, in terms of neutral systems, the focus has mainly been on systems with identical delays in neutral and discrete terms [6–10]. Results also exist that depend only on the size of the discrete delays but not on the size of the neutral delays [11–13]. Besides delays, the saturated controller is apt to cause instability as well. In the presence of actuator saturation, the problem of estimating asymptotic stability regions for linear systems subject to it has been studied by many researches in the past years in [14]. Generally speaking, the existing methods for estimating the stability regions for linear systems with saturating actuators are based on the concept of Lyapunov level set. LMI optimization-based approaches were proposed to estimate the stability regions by using quadratic Lyapunov functions and the Lur’s-type Lyapunov functions in [15–19]. For the studies in response to both issues of delay and saturation, the sufficient conditions for systems with delay and saturated actuator are obtained in [18, 20–22]; Lyapunov-Krasovskii functional is employed to investigate the delay-dependent robust stabilization for uncertain neutral systems with saturated actuators in [20]; a controller is constructed in terms of linear matrix inequalities using descriptor model transformation in [18], just to name a few. However, this paper wants to provide a new method to find the system stability region and
Critical Branching Random Walks with Small Drift
Xinghua Zheng
Mathematics , 2009,
Abstract: We study critical branching random walks (BRWs) $U^{(n)}$ on~$\mathbb{Z}_{+}$ where for each $n$, the displacement of an offspring from its parent has drift~$2\beta/\sqrt{n}$ towards the origin and reflection at the origin. We prove that for any~$\alpha>1$, conditional on survival to generation~$[n^{\alpha}]$, the maximal displacement is asymptotically equivalent to $(\alpha-1)/(4\beta)\sqrt{n}\log n$. We further show that for a sequence of critical BRWs with such displacement distributions, if the number of initial particles grows like~$yn^{\alpha}$ for some $y>0$ and $\alpha>1$, and the particles are concentrated in~$[0,O(\sqrt{n})],$ then the measure-valued processes associated with the BRWs, under suitable scaling converge to a measure-valued process, which, at any time~$t>0,$ distributes its mass over~$\mathbb{R}_+$ like an exponential distribution.
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