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Search Results: 1 - 10 of 12745 matches for " Jianliang Yao "
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Edge Colorings of Planar Graphs without 6-Cycles with Two Chords  [PDF]
Ling Xue, Jianliang Wu
Open Journal of Discrete Mathematics (OJDM) , 2013, DOI: 10.4236/ojdm.2013.32016

It is proved here that if a planar graph has maximum degree at least 6 and any 6-cycle contains at most one chord, then it is of class 1.

Automatic Identification of Chinese Prepositional Phrase Including Verbs
Yuanyuan Wang,Jianliang Xu
International Journal of Future Computer and Communication , 2013, DOI: 10.7763/ijfcc.2013.v2.111
Abstract: In this paper, with the help of corpus which was changed by the Harbin Institute of Technology Information Retrieval Laboratory’s Chinese dependency-based Treebank and by using the parser MaltParser as an implementation tool, this paper proposed and implementation a Chinese dependency parsing algorithm, in order to effectively identify the right boundary of the prepositional phrases that contains a verb. Empirical results show that this algorithm has improved the error when analyze the prepositional phrase containing a verb
Inflight Parameter Identification and Icing Location Detection of the Aircraft: The Time-Varying Case
Yiqun Dong,Jianliang Ai
Journal of Control Science and Engineering , 2014, DOI: 10.1155/2014/396532
Abstract: This paper considers inflight parameter identification and icing location detection of the aircraft in a more common time-varying nature. In particular, ice accumulation is modeled as a continuous process, and the effect of the ice upon aircraft dynamics is to be accreted with time. Time-varying case of the Hinf algorithm is implemented to provide inflight estimate of aircraft dynamic parameters, and the estimated results are delivered to a probabilistic neural network to decide icing location of the aircraft; an excitation measure of the aircraft is also adopted in the network input layer. A database corresponding to different icing cases and severities was generated for the training and test of the detection network. Based on the test results, the icing detection framework presented in this paper is believed to be with promising applicableness for our further studies. 1. Introduction Current aviation research and development has begun to focus more on creating aircraft that are safe and reliable during severe weather conditions. Aircraft icing is of great concern due to the detrimental effect of accreted ice on aircraft performances. Most of the accidents related with aircraft icing occur because the ice accumulation modifies the stability and controllability of the aircraft [1, 2]; other accidents include engine failure or critical probes (pitot tube, etc.) malfunctioning [3, 4]. Currently there are two main approaches to deal with the ice accretion problem. First, pilots are provided with weather information prior to flight missions in the pursuit of avoiding potential icing conditions or aircraft are thoroughly deiced before takeoff, while an icing protection system (IPS) could be operated in flight to remove dangerous ice accretions. Under all circumstances, apparently ice avoidance is a more desirable goal. For most of the commercial flight courses, however, while revenues and schedules must be maintained, IPS still occupies an important part in the insurance of safe flight. Current IPS mainly consists of devices that could bleed hot engine exhaust to counteract the frigid icing conditions, or inflatable boots are used to break off the accumulated ice. Generally the IPS functions in an either advisory or primary capacity. The advisory IPS relies upon pilots to activate icing protection devices based on any aircraft icing information, which might be allocated from icing/environmental sensors. As for IPS that functions in the primary capacity, it utilizes the information collected from various sensors, and the deice/anti-ice devices are activated
A central limit theorem and moderate deviations for 2-D Stochastic Navier-Stokes equations with jumps
Ran Wang,Jianliang Zhai
Mathematics , 2015,
Abstract: We study the small noise asymptotics for two-dimensional Navier-Stokes equa- tions driven by Levy noise. A central limit theorem and a moderate deviation are established under appropriate assumptions, which describes the exponen- tial rate of convergence of the stochastic solution to the deterministic solution.
SPDEs with two reflecting walls and two singular drifts
Juan Yang,Jianliang Zhai
Mathematics , 2015,
Abstract: We study SPDEs with two reflecting walls $\Lambda^1$, $\Lambda^2$ and two singular drifts $\frac{c_1}{(X-\Lambda^1)^{\vartheta}}$, $\frac{c_2}{(\Lambda^2-X)^{\vartheta}}$, driven by space-time white noise. First, we establish the existence and uniqueness of the solutions $X$ for $\vartheta\geq 0$. Second, we obtain the following pathwise properties of the solutions $X$. If $\vartheta>3$, then a.s. $\Lambda^1
Large deviations for stochastic models of two-dimensional second grade fluids
Jianliang Zhai,Tusheng Zhang
Mathematics , 2015,
Abstract: In this paper, we established a large deviation principle for stochastic models of incompressible second grade fluids. The weak convergence method introduced by \cite{Budhiraja-Dupuis} plays an important role.
Seasonal variation and longitudinal distribution characters of cladocerans in the Three Gorges Reservoir

Huixian Wu,Jianliang Yao,Yan Liu,Junzeng Xue,Qinghua Cai,Jiankang Liu,

生物多样性 , 2009,
Abstract: To reveal patterns of longitudinal distribution, seasonal variation, and ecological succession in cladocerans communities in the Three Gorges Reservoir, ten sites were used to sample cladoceran communities across a longitudinal gradient from April, 2004 to January, 2005. Nine cladoceran species were collected throughout the year. Species richness was highest in spring (8 species), lower in summer (5 species) and winter (3 species), and lowest in autumn (2 species). Cladoceran species composition varied across sampling sites. Four species were collected from river sampling sites and seven species from reservoir sampling sites. Cladoceran species richness decreased gradually with increasing distance to the dam within the reservoir area. Cladoceran density and biomass varied among seasons (P <0.01) and sampling sites (P <0.01), and both were highest in spring. Density and biomass of cladocerans in river areas were lower than in the reservoir area. Density and biomass of cladoceran in up area of reservoir was lower than that in down area of reservoir. The cladoceran communities of the Three Gorges Reservoir showed distinct patterns in both longitudinal distribution and seasonal variation.
Seasonal variation and longitudinal distribution of copepods in the main river area of the Three Gorges Reservoir

Jianliang Yao,Junzeng Xue,Dengyuan Wang,Qinghua Cai,Xiangfei Huang,Jiankang Liu,

生物多样性 , 2007,
Abstract: The ecosystem of the Three Gorges in Yangtze River was changed into an artificial lake(reservoir) ecosystem after impoundment in June 2003.We surveyed the seasonal variation and spatial distribution of copepods from April 2004 to January 2005 in order to provide basic data for clarifying the successional pat-tern of the ecosystem.From Jiangjin to Maoping,eight copepod species were collected,belonging to Ca-lanoida,Harpacticoida,and Cyclopoida.Of these,Mesocyclops pehpeiensis,M.leuckarti and Sinocalanus dorrii had a relatively wide distribution.No distinct difference in species number was found among sampling sites,but the species composition was different.Species composition,distribution and density of copepods showed significant seasonal variation.Copepod density showed an obvious gradient with the distance from the reservoir dam:the nearer to the dam,the denser the copepods.
Circulating Tumor Cells: Application as a Biomarker for Molecular Characterization and Predictor of Survival in an All-Comer Solid Tumor Phase I Clinical Study
Haifeng Bao, Patricia A. Burke, Jiaqi Huang, Xiaoru Chen, Philip Z. Brohawn, Yihong Yao, Robert J. Lechleider, Robert S. Sikorski, Manuela Buzoianu, Jianliang Zhang, Xiaoqing Shi, Laura K. Richman, Theresa M. LaVallee
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0058557
Abstract: Purpose Clinical development of cancer drugs has a low success rate. Prognostic and predictive biomarkers using minimally invasive approaches hold promise for increasing the probability of success by enabling disease characterization, patient selection and early detection of drug treatment effect. Enumeration and molecular characterization of circulating tumor cells (CTC) may address some of these needs, and thus were evaluated for utility in a Phase I solid tumor clinical study. Experimental Design Blood samples for CTC analysis were obtained from 24 cancer patients in a multi-center all-comer Phase I study of MEDI-575, a novel anti-PDGFRα antibody. Samples were taken at screening and analyzed for enumeration of CTC using the CellSearch? platform and for molecular characterization using a novel quantitative RT-PCR assay. Results Fifty-nine percent of the patients showed at least 1 CTC per 7.5 ml of blood at baseline. Progression-free survival (PFS) and overall survival (OS) of patients with 0 CTCs at baseline were longer than PFS and Os for patients with 1-3 and >3 CTCs (8.8 versus 1.4 and 1.3 months PFS, P = 0.02; 9.0 vs 7.4 and 3.5 months OS, P = 0.20, respectively). Patients with 0?CTC showed a greater percentage of stable disease than the other 2 groups with 1-3 and >3 CTCs (57% vs 29% and 0%). The multimarker qRT-PCR method detected CTC in 40% of the patients, and 80% of these patients were positive for pre-selected drug target genes. Conclusion CTC enumeration of patients in an all-comer study is feasible and may allow for patient stratification for PFS and Os to evaluate the clinical response of investigational agents. Gene expression profiling of isolated CTC may provide a means for molecular characterization of selected tumor targets.
A Study on the central configuration in the newtonian 4-body problem of celestial mechanics

Tang Jianliang,

系统科学与数学 , 2006,
Abstract: The central configuration in the N-body problem is one of the most studied problems in the field of celestial mechanics and appled mathematics. There are many results about central configurations. In this paper, by using Wu-Ritt method and subresultant sequences, we study a class of Newtonian planar 4-body problem and give a closed form solution. From the solution, we prove that the configurations for a class of Newtonian planar 4-body problem is finite.
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