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On Defected Colourings of Graphs

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Acta Mathematicae Applicatae Sinica 2013年第4期29卷 777-786页

作者： Bing YAO Zhong-fu zhang jian-fang WANG College of mathematics and statistics Northwest Normal University institute of Applied Mathematic Lanzhou Jiaotong University Academy of mathematics and Systems science Chinese Academy of Sciences

Abstract A k-edge-coloring f of a connected graph G is a （A1, A2, , A）-defected k-edge-coloring if there is a smallest integer/ with 1 _ /3 _〈 k - i such that the multiplicity of each color j E {1,2,... ,/3} appearing at a vertex is equal to Aj _〉 2, and each color of {/3 -}- 1,/3 - 2, - , k} appears at some vertices at most one time. The （A1, A2,, A/）-defected chromatic index of G, denoted as X （A1, A2,, A/; G）, is the smallest number such that every （A1,A2,-.., A/）-defected t-edge-coloring of G holds t _〉 X（A1, A2 A;; G）. We obtain A（G） X（A1, ）2, , A/; G）＋ -- （Ai - 1） _〈 /k（G） 1, and introduce two new chromatic indices of G i=1 as： the vertex pan-biuniform chromatic index X pb （G）, and the neighbour vertex pan-biuniform chromatic index Xnpb（G）, and furthermore find the structure of a tree T having X pb （T） =1.

关键词： edge coloring total coloring defected coloring

Spatial characteristics and capacity investigation of indoor hotspot channel based on wideband MIMO measurement at 4.9 GHz

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The Journal of China universities of Posts and Telecommunications 2010年第3期17卷 38-44页

作者： NIE Xin zhang jian-hua HuANG Chen LIu Ze-min zhang Ping key Laboratory of universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China Wireless Technology Innovation institute Beijing University of Posts and Telecommunications Beijing 100876 China

In this article, results obtained from wideband multiple-input multiple-output channel measurements at 4.9 GHz are presented. Measurements were performed in an indoor hotspot scenario with both line-of-sight and non-line-of-sight propagation conditions. Vertical polarized uniform linear arrays （uLAs） with different antenna spacing and orientation were utilized for investigating the impact of antenna configurations on the system performance. Based on measured channel impulse responses, the spatial correlation of uLA is analyzed and compared with the theoretical values calculated from the power azimuth spectrum. Following that, the eigenvalue statistics and capacity with respect to antenna spacing and orientation are given and compared. The diversity-multiplexing tradeoff （DMT） of measured channels at operational signal-to-noise ratio （SNR） is also presented. The reason why the DMT of measured channels is much lower than that ofi.i.d. Rayleigh channels is specified.

关键词： wideband multiple-input multiple-output (MIMO) measurement indoor hotspot scenario spatial characteristics capacity

Response of remotely sensed Normalized Difference Water Deviation Index to the 2006 Drought of eastern Sichuan Basin

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science China Earth sciences 2008年第5期51卷 748-758页

作者： zhang Wenjiang1, Lu QiFeng2, GAO ZhiQiang3 & PENG jian4 1 School of Water Resource and Hydropower, Sichuan university, Chengdu 610065, China 2 National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China 3 institute of Geographic sciences and Natural Resources Research, Chinese Academy of sciences, Beijing 100101, China 4 School of Environmental sciences, Peking university, Beijing 100871, China School of Water Resource and Hydropower Sichuan University Chengdu China National Statellite Meteorological Center China Meteorological Administration Beijing China institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences Beijing China School of Environmental sciences Peking University Beijing China

One of the most serious droughts in last century occurred in eastern Sichuan Basin in the summer of 2006 (hereinafter called the Drought). The response of Moderate Resolution Imaging Spectroradiometer (MODIS, boarding on NASA satellites of Terra and Aqua) to the Drought was analyzed in order to reach one practicable monitoring solution for regional soil moisture. Temporal process and spatial extension of the Drought were firstly estimated with ground meteorological and hydrological observations. Then, for the whole region of Sichuan and Chongqing, the remotely sensed Normalized Difference Water In- dex (NDWI) for the summers of 2001―2006 were calculated based on 8-day composite MODIS products, which were further used to construct a new water index (Normalized Difference Water Deviation Index, NDWDI) to examine the sensitivity of remote sensing in the Drought. The study showed that the NDWDI is more sensitive to regional drought than other absolute-soil-moisture-based indices. With the new index, the study extracted the spatial-temporal characteristics of the 2006 Drought, and explored its developing and withdrawing processes, which agreed with related statistics. Compared with ground method of drought observation, the NDWDI-based remote sensing solution of this paper is more pref- erable and practicable in that the local soil properties of water consumption and supply are implicitly taken into account, and the spatial representativity limit of ground observation is circumvented to a degree as satellite remotely senses the earth surface in a way of two-dimensional pixel matrix. So, the NDWDI-based method can be used to monitor regional soil water stress situation more practically and efficiently.

关键词： Sichuan Basin drought Normalized Difference Water Deviation Index response of remote sensing regional scale

Molecular phylogenetics and population demographic history of Amphioctopus fangsiao,inferred from mitochondrial and microsatellite DNA markers

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Acta Oceanologica Sinica 2023年第6期42卷 39-48页

作者： jian Zheng Yan Tang Ran Xu Xiaoying zhang Xiaodong Zheng institute of Evolution&Marine Biodiversity Ocean University of ChinaQingdao 266003China key Laboratory of Mariculture of Ministry of Education Ocean University of ChinaQingdao 266003China

Amphioctopus fangsiao(Cephalopoda:Octopodidae)is an important commercial species in the coastal waters of *** recent years,however,the resource of *** have declined because of habitat destruction and *** analyze the genetic variations of *** caused by the fluctuation of resources,the population genetic structure of nine sampling locations collected from the Bohai Sea to the South China Sea were investigated,using mtDNA COI fragments and microsatellite *** results of F-statistics,AMOVA,STRuctuRE and PCA analyses showed three phylogeographic clades(Clades A,B and C),revealing limited genetic exchange between north and south *** clades diverged in 2.23(Clades A and B)and 3.67(Clades A,B and C)million years ago,during the dramatic environmental fluctuations,such as sea level and temperature changes,have exerted great influence on the survival distribution pattern of global *** results for low genetic connectivity among *** populations provide insights into the development of management strategies,that is,to manage this species as separate management unit.

关键词： genetic diversity population genetic structure Amphioctopus fangsiao mitochondrial DNA microsatellite DNA

江苏常熟地区汉族人群47个微单倍型的遗传多态性及遗传结构分析

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生物化学与生物物理进展 2024年第2期51卷 423-434页

作者：潘坤鹏冯耀森于文帅刘宗伟姚伊人赵杰康克莱张驰王乐吴坚昆明医科大学法医学院昆明650500 公安部鉴定中心法医遗传学公安部重点实验室现场物证溯源技术国家工程实验室北京100038 中国人民公安大学侦查学院北京100038 江苏省常熟市公安局常熟215500

目的探索江苏常熟地区汉族人群在47个常染色体微单倍型基因座的遗传多态性,评估应用效能及法庭科学参数。方法采用MHSeqTyper47混合DNA鉴定试剂盒进行基因座复合扩增及文库构建,使用MiSeq FGx测序平台进行测序,测得的数据应用MHTyper数... 详细信息

目的探索江苏常熟地区汉族人群在47个常染色体微单倍型基因座的遗传多态性,评估应用效能及法庭科学参数。方法采用MHSeqTyper47混合DNA鉴定试剂盒进行基因座复合扩增及文库构建,使用MiSeq FGx测序平台进行测序,测得的数据应用MHTyper数据分析软件进行分析,对获得的样本遗传信息进行评估,结合千人基因组数据(1000 Genomes Project phase 3,1kG)评估群体间遗传分化指数及遗传距离,并计算法庭科学参数。结果江苏常熟地区汉族人群与1kG中的中国北京群体的遗传分化和遗传距离最小,并得到最接近的有效等位基因数(Ae),累积随机匹配概率(combined matching probability,CMP)与1kG中东亚参考人群的5个群体均接近,为1.25×10^(-36),累积非父排除概率达0.9999999999641。结论本研究报告了47个微单倍型基因座在江苏常熟地区汉族人群中的等位基因频率及遗传多态性信息,为47个微单倍型在法医学应用中提供了数据基础。另外,比较了1kG参考人群与江苏常熟地区汉族人群的多态性差异,并揭示了47个微单倍型在江苏常熟地区汉族人群中的遗传结构。总的来说,1kG中的东亚人群参考数据更符合江苏常熟地区汉族人群的遗传特征。

关键词：法医遗传学微单倍型二代测序

statistics of Leaders in Index-Driven Networks

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Chinese Physics Letters 2013年第5期30卷 183-186页

作者： zhang Yong Ju Xian-Meng zhang Li-Jie Xu Xin-jian Department of mathematics Shanghai UniversityShanghai 200444 State key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876 Department of Physics Shanghai UniversityShanghai 200444 institute of System sciences Shanghai UniversityShanghai 200444

We study the statistical properties of leaders in growing networks with age.A leader of a network is defined as the node with the largest degree and the age of the node is trivially labeled by its index,i.e.,the time it joins the *** networks evolve with the addition of new nodes connecting to old ones with the possibility that is proportional to the index of the target,we investigate both the average number and index of leaders as well as the degree distribution of *** average number of leaders first increases quickly with time and then saturates to a finite value and the average index of leaders increases algebraically with *** features result from the degree distribution with an exponential *** calculations based on the rate equation are verified by numerical simulations.

关键词： trivial algebraic connecting

Approximating Conditional Density Functions using Dimension Reduction

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Acta Mathematicae Applicatae Sinica 2009年第3期25卷 445-456页

作者： jian-qing Fan Liang Peng Qi-wei Yao Wen-yang zhang Department of Operations Research and Financial Engineering Princeton University Princeton NJ 08540 USA School of mathematics Georgia Institute of Technology Atlanta GA 30332-0160 USA Department of statistics London School of Economics London WC2A 2AE UK Department of Mathematical sciences University of Bath Bath BA2 7AY UK

We propose to approximate the conditional density function of a random variable Y given a dependent random d-vector X by that of Y given θ^τX, where the unit vector θ is selected such that the average kullback-Leibler discrepancy distance between the two conditional density functions obtains the minimum. Our approach is nonparametric as far as the estimation of the conditional density functions is concerned. We have shown that this nonparametric estimator is asymptotically adaptive to the u.k.own index θ in the sense that the first order asymptotic mean squared error of the estimator is the same as that when θ was known. The proposed method is illustrated using both simulated and real-data examples.

关键词： Conditional density function dimension reduction, kullback-Leibler discrepancy local linear regression nonparametric regression Shannon's entropy

Microstructure and strength features of warm and ice-rich frozen soil treated with high-performance cements

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Journal of Mountain science 2019年第6期16卷 1470-1482页

作者： SuN Gao-chen zhang jian-ming DANG Ying-sheng DING Cong State key Laboratory of Frozen Soil Engineering Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China university of Chinese Academy of sciences Beijing 10049China China State Construction Engineering Corporation Aecom Consultant Co. Ltd.Lanzhou 730000China College of Water&Architectural Engineering Shihezi UniversityShihezi 832000China Shanghai Investigation Design&Research Institute Co.Ltd.Shanghai 200434China

Warm and ice-rich frozen soil(WIRFS) exhibits lower shear strength due to the weak binding forces between soil particles and ice crystals. To enhance the strength of WIRFS, frozen soil was treated separately with Portland, Phosphate, Sulphoaluminate, Portland-Phosphate and PortlandSulphoaluminate cements. After the samples were cured under -1.0°C for 7 days, the microscopic pore distribution characteristics and the macro-mechanical properties of WIRFS were investigated using mercury intrusion porosimetry(MIP), scanning electron microscopy(SEM) and unconfined compressive strength(uCS) tests. To quantitatively analyze the laws of pore-size transformation and the variation of Hausdorff volumetric fractal dimensions for pre-and post-treated WIRFS, the CuRVEEXTRAct and Image-Pro Plus(IPP) image analysis system has been developed for analysing SEM images of the soil samples. statistics of the pore-area dimension and pore-volume dimension were calculated. The results reveal that the cement-based treatment of WIRFS can improve the cementation fill of soil pores and the bond forces between soil particles. There is an evident correlation between the microstructure characteristics and the mechanical properties of the treated WIRFS. As the fractal dimensions of pore-area decrease, the unconfined compressive strength of cement-treated WIRFS increases significantly. In contrast, as the fractal dimensions of pore-volume increases, the unconfined compressive strength decreases remarkably.

关键词： Soil stabilizer Frozen soil Microstructure characteristics Macro-mechanical properties Fractal theory Scanning electron microscopy

Effect of Jiuwei Zhuhuang Powder on Cough Resolution in Children with upper Respiratory Tract Infections:A Multicenter Randomized Controlled Trial

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Chinese Journal of Integrative Medicine 2022年第5期28卷 387-393页

作者： LuO Hui SONG Gui-Hua MA Xiao-jian SuN Meng-meng zhang Man XIE jian-rong PENG Shao institute for Tibetan Medicine China Tibetology Research CenterBeijing(100101)China Department of Pediatrics the First Affiliated Hospital of Henan University of Chinese MedicineZhengzhou(450000)China Department of Pediatrics Huaihe Hospital of Henan UniversityZhengzhou(450000)China Department of Pediatrics the First Affiliated Hospital of Zhengzhou UniversityZhengzhou(475000)China School of statistics Renmin University of ChinaBeijing(100872)China

Objective:To assess the effectiveness of Jiuwei Zhuhuang Powder(JWZH),a Tibetan patent medicine in treating upper respiratory tract infection(uRTI)associated cough in ***:The study was a multicenter,randomized,open-label,controlled trial.A total of 142 children aged 2 to 14 years old,with uRTIassociated cough within 48 h of onset,were randomly assigned to two groups at a 1:1 ratio by computer-generated randomization *** were treated with JWZH(1 to 1.5 g,twice to thrice daily)in the treatment group or conventional treatment(Pediatric Paracetamol,Artificial Cow-bezoar and Chlorphenamine Maleate Granules,0.25 to 1 g,thrice daily)in the control group for 5 *** primary endpoints were the time to cough resolution and 4-day cough resolution *** secondary endpoints were the daily improvement in symptom scores and cough resolution rate during the study ***:A total of 138 children were included in the intention-to-treat analysis,with 71 cases in the treatment group and 67 cases in the control *** with the conventional treatment,the children receiving JWZH had a shorter time to cough resolution[hazard ratio,2.10;95%confidence interval(CI),1.29-3.40;P=0.003].The median time to cough resolution for children receiving JWZH was shorter than that of the conventional treatment(2 days vs.3 days;Pugh resolution rate in the JWZH group was higher than that of the control group(94.4%vs.74.6%;risk difference:19.8%,95%CI:8.1%-31.5%;relative risk:1.265,95%CI:1.088-1.470;P=0.001).There were no statistically significant differences in the improvement of other symptoms caused by uRTI(P>0.05).Adverse events was reported in 5.6%(4/71)and 4.5%(3/67)in participants of JWZH and PPACCM groups(P>0.05),respectively,which were all mild and resolved without ***:JWZH seemed to be a safe and effective therapy for uRTI-associated cough in children.(Trial registration *** ctR2000039421)

关键词： child cough upper respiratory tract infection Jiuwei Zhuhuang Powder randomized controlled trial Tibetan medicine