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| 1 | Resveratrol induces apoptosis in human esophageal carcinoma cells显示文摘AIM: To investigate the apoptosis in esophageal cancer cells induced by resveratrol, and the relation between this apoptosis and expression of Bcl-2 and Bax.METHODS: In in vitro experiments, MTr assay was used to determine the cell growth inhibitory rate. Transmission electron microscope and TUNEL staining method were used to quantitatively and qualitively detect the apoptosis status of esophageal cancer cell line EC-9706 before and after the resveratrol treatment. Immunohistochemical staining was used to detect the expression of apoptosis-regulated gene Bcl-2 and Bax.RESULTS: Resveratrol inhibited the growth of esophageal cancer cell line EC-9706 in a dose-and time-dependent manner. Resveratrol induced EC-9706 cells to undergo apoptosis with typically apoptotic characteristics, including morphological changes of chromatin condensation, chromatin crescent formation, nucleus fragmentation and apoptotic body formation. TUNEL assay showed that after the for 24 to 96 hours, the AIs were apparently increased with treated time (P<0.05). Immunohistochemical staining showed that after the treatment of EC-9706 cells with proteins were apparently reduced with treated time (P<0.05)and the PRs of Bax proteins were apparently increased with treated time (P<0.05).CONCLUSION: Resveratrol is able to induce the apoptosisin esophageal cancer. This apoptosis may be mediated by down-regulating the apoptosis-regulated gene Bcl-2 and upregulating the expression of apoptosis-regulated gene bax. | Hai-BoZhou YunYan Ya-NiSun Ju-RenZhu | 2003 | World Journal of Gastroenterology2003，9，3： | 28 |
| 2 | Discrimination of abiogenic and biogenic alkane gases显示文摘We have combined the analytical data of the carbon isotope distribution pattern, R/Ra and CH4/3He values of abiogenic and biogenic (referring to the thermogenic and bacterial or microbial) alkane gases in China with those of alkane gases from USA, Russia, Germany, Australia and other countries. Four discrimination criteria are derived from this comparative study: 1) Carbon isotopic composition is generally greater than -30‰ for abiogenic methane and less than -30‰ for biogenic methane; 2) Abiogenic alkane gases have a carbon isotopic reversal trend (δ 13C1> δ 13C2> δ 13C3> δ 13C4) with δ 13C1>-30‰ in general; 3) Gases with R/Ra >0.5 and δ 13C11 δ 13C2>0 are of abiogenic origin; 4) Gases (meth- ane) with CH4/3He≤106 are of abiogenic origin, whereas gases with CH4/3He≥1011 are of biogenic origin. | DAI JinXing ZOU CaiNeng ZHANG ShuiChang LI Jian NI YunYan HU GuoYi LUO Xia TAO ShiZhen ZHU GuangYou MI JingKui LI ZhiSheng HU AnPing YANG Chun ZHOU QingHua SHUAI YanHua ZHANG Ying MA ChengHua | 2008 | Science China Earth Sciences2008，51，12： | 17 |
| 3 | Stable carbon and hydrogen isotopes of gases from the large tight gas fields in China显示文摘By the end of the year 2010,a total of 15 large tight gas fields have been found in China,located in the Ordos,Sichuan,and Tarim basins.The annual production and total reserves of these fields in 2010 were 222.5×108and 28657×108m3,respectively,accounting for 23.5%and 37.3%,respectively,of the total annual production and reserves of natural gases in China.They took a major part of all natural gas production and reserves in China.According to the analyses of 81 gas samples,the stable carbon and hydrogen isotopic compositions of tight gases in China have following characteristics:(1)Plots of 13C1-13C2-13C3,13C1-C1/C2+3and 13C1-13C2demonstrate the coal-derived origin of tight gases in China;(2)For the primary alkane gases,both carbon and hydrogen isotopic values increase with increasing molecular mass,i.e.,13C1<13C2<13C3<13C4and2H1<2H2<2H3;(3)The isotopic differences of 13C2-13C1,13C3-13C1,2H2-2H1and 2H3-2H1decrease with increasing Ro(%)and C1/C1–4;(4)There are seven causes for the carbon and hydrogen isotopic reversal,however,the carbon and hydrogen isotopic reversal of tight gases in China is caused mainly by multiple stages of gas charge and accumulation. | DAI JinXing NI YunYan HU GuoYi HUANG ShiPeng LIAO FengRong YU Cong GONG DeYu WU Wei | 2014 | Science China Earth Sciences2014，57，1： | 17 |
| 4 | COVID-19: Challenges to GIS with Big Data显示文摘The outbreak of the 2019 novel coronavirus disease(COVID-19)has caused more than 100,000 people infected and thousands of deaths.Currently,the number of infections and deaths is still increasing rapidly.COVID-19 seriously threatens human health,production,life,social functioning and international relations.In the fight against COVID-19,Geographic Information Systems(GIS)and big data technologies have played an important role in many aspects,including the rapid aggregation of multi-source big data,rapid visualization of epidemic information,spatial tracking of confirmed cases,prediction of regional transmission,spatial segmentation of the epidemic risk and prevention level,balancing and management of the supply and demand of material resources,and socialemotional guidance and panic elimination,which provided solid spatial information support for decision-making,measures formulation,and effectiveness assessment of COVID-19 prevention and control.GIS has developed and matured relatively quickly and has a complete technological route for data preparation,platform construction,model construction,and map production.However,for the struggle against the widespread epidemic,the main challenge is finding strategies to adjust traditional technical methods and improve speed and accuracy of information provision for social management.At the data level,in the era of big data,data no longer come mainly from the government but are gathered from more diverse enterprises.As a result,the use of GIS faces difficulties in data acquisition and the integration of heterogeneous data,which requires governments,businesses,and academic institutions to jointly promote the formulation of relevant policies.At the technical level,spatial analysis methods for big data are in the ascendancy.Currently and for a long time in the future,the development of GIS should be strengthened to form a data-driven system for rapid knowledge acquisition,which signifies ts that GIS should be used to reinforce the social operation parameterization of models and methods,especially when providing support for social management. | Chenghu Zhou Fenzhen Su Tao Pei An Zhang Yunyan Du Bin Luo Zhidong Cao Juanle Wang Wen Yuan Yunqiang Zhu Ci Song Jie Chen Jun Xu Fujia Li Ting Ma Lili Jiang Fengqin Yan Jiawei Yi Yunfeng Hu Yilan Liao Han Xiao | 2020 | Geography and Sustainability2020，1，1： | 13 |
| 5 | Geochemical characteristics of natural gas from mud volcanoes in the southern Junggar Basin显示文摘A number of mud volcanoes exist in the southern Junggar Basin. To date few systematic studies on natural gas geochemistry of mud volcanoes have been conducted in China. In June 1991 and August 2010, the authors investigated the mud volcanoes in the southern Junggar Basin twice, and the mud volcanism weakened gradually as seen from the variations such as the decrease of gas pressure and output, the downthrow and dry up of the mud pool. The volcanic intensity was significantly weaker than that in Taiwan. The natural gas from the mud volcanoes in the southern Junggar Basin has similar geochemical characteristics, indicating the same source or origin. The main component of the mud volcano gas is alkane gas with contents of 91.15%-97.49%, and the gas is high-quality commercial gas since methane dominates in the alkane. The 13C1 values are 49.1‰--40.6‰, which are in accordance with the peak 13C1 frequency of mud volcano gas around the world, and the alkane gas displays positive carbon isotopic series, i.e., 13C1< 13C2< 13C3, suggesting typical thermogenic origin. The helium in the mud volcano gas is typically crust-derived due to the low R/Ra values of 0.011-0.054. The mud volcano gas is coal-derived since the 13C2 values are all greater than 28‰, and C1/C1-4 and 13C1 values are in accordance with those of natural gas derived from the Lower-Middle Jurassic coal-measures. Therefore, alkane gas from mud volcanoes in the southern Junggar Basin is mainly sourced from the Lower-Middle Jurassic coal-measures. | DAI JinXing WU XiaoQi NI YunYan WANG ZeCheng ZHAO ChangYi WANG ZhaoYun LIU GuiXia | 2012 | Science China Earth Sciences2012，55，3： | 13 |
| 6 | Analysis of ecological quality in Lhasa Metropolitan Area during 1990-2017 based on remote sensing and Google Earth Engine platform显示文摘Based on a total of 519 images,the composite images with the lowest possible cloud cover were generated at pixel level with image synthesis method on Google Earth Engine(GEE)platform.The Remote Sensing Ecological Index(RSEI)was adopted,and calculated in an efficient way with the assistance of parallel cloud computing of the GEE platform.The RSEI was used in this paper to evaluate and monitor the eco-environmental quality of the Lhasa Metropolitan Area.Results show that:(1)The ecological quality is better in the west than in the east of Lhasa Metropolitan Area,with Lhasa as an approximate dividing point.The ecological quality improved and then deteriorated dramatically before 2000,with the mean RSEI value dropping from 0.51 to 0.46;the trend was followed by a gradual increase up until 2017,with the mean RSEI value increased from 0.46 to 0.55.(2)The RSEI is weakly and positively correlated with socioeconomic indicators.This indicates that the population growth and economic development did not negatively influence the ecological quality,but actually boosted it.(3)The GEE can serve as an efficient computing platform for the assessment and monitoring of eco-environmental quality in vast regions. | HUANG Huiping CHEN Wei ZHANG Yuan QIAO Lin DU Yunyan | 2021 | Journal of Geographical Sciences2021，31，2： | 9 |
| 7 | The existence of harmonic maps from Finsler manifolds of Riemannian manifolds显示文摘In this paper,we consider the existence of harmonic maps from a Finsler manifold and study the characterisation of harmonic maps,in the spirit of Ishihara.Using heat quation method we show that any map from a compact Finsler manifold M to a compact Riemannian manifold with non-positive sectional curvature can be deformed into a harmonic map which has minimum energy in its homotopy class. | MO Xiaohuan YANG Yunyan | 2005 | Science China Mathematics2005，48，1： | 8 |
| 8 | Production of Two Elite Glutinous Rice Varieties by Editing Wx Gene显示文摘The waxy gene(Wx) in rice, which encodes the granule bound starch synthase enzyme, is responsible for amylose synthesis. Glutinous(sticky) rice has little or no amylose that can be used in various applications, such as brewing. In this study, knockout of the Wx gene with CRISPR/Cas9 technology was conducted in two elite japonica rice lines, Huaidao 5(HD5) and Suken 118(SK118), aiming to develop elite sticky rice varieties. We achieved six homozygous T_0 plants with more than 200 bp deletion in the Wx gene, as well as 36 wx-HD5 and 18 wx-SK118 homozygous transgene-free plants in the T_1 generation. The seeds of all the mutants were white and opaque, similar to those of sticky rice, and contained only 2.6%–3.2% amylose. Results of scanning electron microscopy showed that the quality of rice did not change. In conclusion, we successfully developed two elite sticky rice varieties. | FEI Yunyan YANG Jie WANG Fangquan FAN Fangjun LI Wenqi WANG Jun XU Yang ZHU Jinyan ZHONG Weigong | 2019 | Rice science2019，26，2： | 6 |
| 9 | Existence of positive solutions to some nonlinear equations on locally finite graphs显示文摘Let G =(V,E) be a locally finite graph,whose measure μ(x) has positive lower bound,and A be the usual graph Laplacian.Applying the mountain-pass theorem due to Ambrosetti and Rabinowitz(1973),we establish existence results for some nonlinear equations,namely △u+hu=f(x,u),x∈V.In particular,we prove that if h and f satisfy certain assumptions,then the above-mentioned equation has strictly positive solutions.Also,we consider existence of positive solutions of the perturbed equation △u+hu=f(x,u)+∈g.Similar problems have been extensively studied on the Euclidean space as well as on Riemannian manifolds. | GRIGOR''YAN Alexander LIN Yong YANG YunYan | 2017 | Science China Mathematics2017，60，7： | 6 |
| 10 | Hydrogen production from coke oven gas over LiNi/γ-Al_2O_3 catalyst modified by rare earth metal oxide in a membrane reactor显示文摘The performance of LiNi/γ-Al2O3 catalysts modified by rare earth metal oxide(La2O3 or CeO2 ) packed on BCFNO membrane reactor was discussed for the partial oxidation of methane(POM) in coke oven gas(COG) at 875 C. The NiO/γ-Al2O3 catalysts with different amounts of La2O3 and CeO2 were prepared with the same preparation method and under the same condition in order to compare the reaction performance(oxygen permeation,CH 4 conversion,H 2 and CO selectivity) on the membrane reactor. The results show that the oxygen permeation flux increased significantly with LiNiREO x /γ-Al2O3(RE = La or Ce) catalysts by adding the element of rare earth especially the Ce during the POM in COG. Such as,the Li15wt%CeO2 9wt%NiO/γ-Al2O3 catalyst with an oxygen permeation flux of 24.71 ml cm 2 min 1 and a high CH 4 conversion was obtained in 875 C. The resulted high oxygen permeation flux may be due to the added Ce that inhibited the strong interaction between Ni and Al2O3 to form the NiAl2O4 phase. In addition,the introduction of Ce leads up to an important property of storing and releasing oxygen. | Zhibin Yang Yunyan Zhang Weizhong Ding Yuwen Zhang Peijun Shen Yuding Zhou Yong Liu Shaoqing Huang Xionggang Lu | 2009 | Journal of Natural Gas Chemistry2009，18，4： | 6 |
| 11 | A model of sea surface temperature front detection based on a threshold interval显示文摘A model(Bayesian oceanic front detection, BOFD) of sea surface temperature(SST) front detection in satellite-derived SST images based on a threshold interval is presented, to be used in different applications such as climatic and environmental studies or fisheries. The model first computes the SST gradient by using a Sobel algorithm template. On the basis of the gradient value, the threshold interval is determined by a gradient cumulative histogram. According to this threshold interval, front candidates can be acquired and prior probability and likelihood can be calculated. Whether or not the candidates are front points can be determined by using the Bayesian decision theory. The model is evaluated on the Advanced Very High-Resolution Radiometer images of part of the Kuroshio front region. Results are compared with those obtained by using several SST front detection methods proposed in the literature. This comparison shows that the BOFD not only suppresses noise and small-scale fronts, but also retains continuous fronts. | PING Bo SU Fenzhen MENG Yunshan FANG Shenghui DU Yunyan | 2014 | Acta Oceanologica Sinica2014，33，7： | 5 |
| 12 | The morphological and phylogenetic characterization for the dinoflagellate Margalefidinium fulvescens (=Cochlodinium fulvescens) isolated from the Jiaozhou Bay, China显示文摘The dinoflagellate genus Margalefidinium has been split from Cochlodinium as a new genus recently and Margalefidinium fulvescens is one of the five Margalefidinium species. Margalefidinium fulvescens is toxic and has been reported from the coastal waters of USA, Canada, Mexico, China, Japan, Indonesia, Korea, Pakistan and Spain. Here we provide the morphological and phylogenetic characterization for an isolate of it from the Jiaozhou Bay, Qingdao, China. Our results showed that the vegetative cells were subspherical to ellipsoidal, 34–60 μm in length, and 19–41 μm in width. Both single cell forms and colonies in chains of 2, 4, or 8 cells were observed in cultures, but chain forms with 2 or 4 cells were observed more often in the field samples. The cingulum was rather deep, encircling the cell approximately twice, but the sulcus was rather narrow, surrounding the cell about one turn. The nucleus was spherical and located at the central epicone. The chloroplasts were granular, brownish, and scattered peripherally. An orange pigmented body also appeared in the epicone. The apical groove appeared vase-like as previously described. Under epi-fluorescence microscopy, a pumpkin-like structure was clearly observed, in which cells were embedded. Cells were observed to exit from the structure, which led us to a hypothesis that the structure may provide cells a shelter to avoid predation or to respond to other stresses. The phylogenetic analyses based on partial LSU rDNA sequences indicated that M. fulvescens from the Jiaozhou Bay was grouped with M. fulvescens populations from other origins and closely related to the clade of M. polykrikoides.Our morphological observations and phylogenetic analyses together confirmed the presence of M. fulvescens in China and our monitoring has also observed the species dominant in the dinoflagellate community of the Jiaozhou Bay in the early autumn of 2015, which alerted us to continually monitor this bloom-forming species in the region. | HU Zhangxi DENG Yunyan LI Yuhang TANG Ying Zhong | 2018 | Acta Oceanologica Sinica2018，37，10： | 5 |
| 13 | Comparison between CBR and CA methods for estimating land use change in Dongguan, China显示文摘用不同途径和模型,陆地使用变化(LUC ) 上的许多研究产出好结果。这些方法的应用揭示了优点和限制。然而, LUC 在政策和自然条件由于许多因素,和变化的影响是一个复杂问题。因此,特征和不同方法的地区性的适用性要求典型途径的进一步的研究,和比较被要求。自从 1980 年代末, CA 被用来模仿城市的生长,城市散漫并且成功地打使用进化。现在它在解决估计的 LUC 是很流行的问题。(CBR ) 作为一种人工智能技术,基于盒子的推理也被采用了后来由一些研究人员学习 LUC 2000 年代。越来越多的研究人员在 LUC 的学习使用了 CBR 方法。CA 途径是从许多典型简单部件构造的一个数学系统,它一起能够当 CBR 是一个面向问题的分析方法解决地理问题时,模仿复杂行为,特别地,地理进程的开车机制是什么时候,还没充分理解。这二个方法在 LUC 研究是完全不同的。在这篇论文,因此基于提高的 CBR 当模特儿,它在我们的以前的研究被建议(杜等。2009 ) ,在估计 LUC 的 CBR 和 CA 途径之间的比较被介绍。在 Dongguan 沿海的区域的 LUC,中国被调查。到学习区域的改进 CBR 和细胞的自动机(CA ) 的应用,生产从 CA 从改进 CBR,和 70.7% 精确性表明 89% 的类似评价精确性的结果。从结果,我们能看到 CA 和 CBR 途径的精确性是两个 >70% 。尽管 CA 方法在预言城市的类型有明显的优点, CBR 方法在预言非城市的类型有明显的趋势。就全部分析过程而言,在 CBR 的预处理工作量是不到 CA 途径的。因此, CBR 途径比为估计陆地使用变化的 CA 途径更灵活、实际上有用,这能被结束。 | DU Yunyan GE Yong V.Chris LAKHAN SUN Yeran CAO Feng | 2012 | Journal of Geographical Sciences2012，22，4： | 5 |
| 14 | Bayesian sequential testing for exponential life system with reliability growth显示文摘A Bayesian sequential testing method is proposed to evaluate system reliability index with reliability growth during development.The method develops a reliability growth model of repairable systems for failure censored test,and figures out the approach to determine the prior distribution of the system failure rate by applying the reliability growth model to incorporate the multistage test data collected from system development.Furthermore,the procedure for the Bayesian sequential testing is derived for the failure rate of the exponential life system,which enables the decision to terminate or continue development test.Finally,a numerical example is given to illustrate the efficiency of the proposed model and procedure. | Yunyan Xing Xiaoyue Wu | 2011 | Journal of Systems Engineering and Electronics2011，22，6： | 4 |
| 15 | Existence of solutions to a class of Kazdan-Warner equations on compact Riemannian surface显示文摘Let(Σ, g) be a compact Riemannian surface without boundary and λ_1(Σ) be the first eigenvalue of the Laplace-Beltrami operator ?_g. Let h be a positive smooth function on Σ. Define a functional J_(α,β)(u) =1/2∫Σ(|?_gu|~2-αu^2)dv_g-β log∫Σhe^udv_g on a function space H = {u ∈ W^(1,2)(Σ) :∫Σudvg = 0}. If α < λ_1(Σ) and J_(α,8π) has no minimizer on H,then we calculate the infimum of Jα,8π on H by using the method of blow-up analysis. As a consequence,we give a sufficient condition under which a Kazdan-Warner equation has a solution. If αλ_1(Σ), then infu∈HJ_(α,8π)(u) =-∞. If β > 8π, then for any α∈ R, there holds infu∈H Jα,β(u) =-∞. Moreover, we consider the same problem in the case that α is large, where higher order eigenvalues are involved. | Yunyan Yang Xiaobao Zhu | 2018 | Science China Mathematics2018，61，6： | 4 |
| 16 | The Influence of Key Environmental Variables on Phytoplankton Community Structure in the Estuary of Tidal Rivers Around Luoyuan Bay,China显示文摘A total of 348 species belonging to 8 phyla and 125 genera were observed in seasonally sampled phytoplankton of tidal rivers from 13 sampling sites around Luoyuan Bay, and all field samplings were carried out in productive period(March/June/August/December) at ebb tide. Bacillariophyta species were the most abundant species, followed by Chlorophyta, Cyanophytes, Euglenophyta, Cryptophyta, Dinophyta, Xanthophyta and Chrysophytas. Seasonal distribution index(SDI) value ranged from 0.63 to 0.86, which meant that species found at those sites in 4 seasons tended to be largely different. Phytoplankton individuals ranged from 5.939×10~4 ind L^(-1) in winter to 75.31×10~4 ind L^(-1) in autumn. Phytoplankton biomass ranged from 0.620 mg L^(-1) in summer to 2.373 mg L^(-1) in autumn. The grey correlation analysis(GCA) showed that the nutrient variables played an important role in the influence on phytoplankton community in every season. The canonical correspondence analysis(CCA) revealed impact of environmental variables on the different species, most of Bacillariophyta species were negative correlation with nutrients(TP and NH_3-N) in the four seasons, Chlorophyta species and Cyanophyta species did not show obvious correlation with environment variables in every season. The combination of GRA analysis and CCA analysis provided a method to quantitatively reveal the correlation between phytoplankton community and environmental variables in water body of tidal rivers at this region. | PAN Wenbin ZHENG Peng LIANG Yunyan CAI Yuanbin | 2017 | Journal of Ocean University of China2017，16，5： | 4 |
| 17 | Characteristics and geological significance of the eclogites from the Tongbai Mountains, Henan Province显示文摘Some eclogites and the related high-P metamorphic belt have been found for the first time from the Tongbai Mountains, Henan Province, where the eclogites and their probable retrogressive products —— garnet amphibolites —— occur as lenses in mica-schists. The fresheclogites comprise garnet, omphacite, quartz, rutile, phengite, barroisite, etc. The composi- | Chunjing Wei Yuxin Wu Yunyan Ni Bin Chen Shiguang Wang | 1999 | Chinese Science Bulletin1999，44，22： | 4 |
| 18 | N-doped carbon supported Pd catalysts for N-formylation of amines with CO2/H2显示文摘Using mesoporous N-doped carbons(NCs)derived from glucose and melamine as the supports,a series of Pd/NC catalysts were prepared,in which Pd nanoparticles with average size<2.0 nm were uniformly distributed on the supports.It was indicated that the resultant Pd/NC catalysts were effective for N-formylation of amines with CO_2and H_2in ethanol without any additives.Especially,the catalyst Pd/NC-800-6.9%containing quaternary N showed the best performance,affording a series of formylamides in good or even excellent yields.Further investigation reveals that the interaction between the Pd nanoparticles and quaternary nitrogen in the NC support was responsible for the good performance of the catalyst. | Xiaoying Luo Hongye Zhang Zhengang Ke Cailing Wu Shien Guo Yunyan Wu Bo Yu Zhimin Liu | 2018 | Science China Chemistry2018，61，6： | 4 |
| 19 | A quantitative morphometric comparison of cockpit and doline karst landforms显示文摘这研究由检验在桂林被开发的地形实体的典型类型的数字和特征介绍了座舱和斗淋石灰岩地区常见的地形的量的比较( Guangxi ,中国), La Alianza ( PR ,美国), Avalton ( KY ,美国),并且鲕状(在里面,美国)。地形实体的五种类型被定义:孤立的山(IH ) ,聚类的山(CH ) ,孤立的阴沟的入口处() ,聚类的阴沟的入口处(CS ) ,和有阴沟的入口处(CHS ) 的聚类的山。一个算法被开发自动地由在二个座舱石灰岩地区常见的地形区域(桂林和 La Alianza ) 和二个斗淋石灰岩地区常见的地形区域的地志的地图上检验轮廓线识别地形实体的这些类型(鲕状并且 Avalton ) 。在每个特定的学习区域以内, CHS 还与一种更大的尺寸和更高的地势是最少的发达类型。IH 并且实体在尺寸是更小的,在地势降低,并且在数量上超过他们的聚类的对应物。实体的这些类型的全部的数字在座舱和斗淋石灰岩地区常见的地形区域是相当不同的。斗淋石灰岩地区常见的地形被更多描绘否定(并且 CS ) 比积极(IH 和 IH ) 地形并且反过来也如此为座舱石灰岩地区常见的地形。例如,桂林学习区域总共有 1192 个积极地形实体,它占据 9.81% 全部的学习区域。它有 622 个仅仅否定地形实体仅仅占据 3.91% 全部的学习区域。由对比,斗淋石灰岩地区常见的地形在鲕状有 130 否定当时 10 个仅仅积极地形实体。积极、否定的地形在鲕状分别地占据 12.68% 全部的学习区域和 2.61% 。而且,地形实体的平均地势和斜坡在座舱石灰岩地区常见的地形高得多比斗淋石灰岩地区常见的地形区域、更陡峭。例如,当它是在 La Alianza 的 19.78 度时,在 Alvaton 的 CH 的平均斜坡是 3.90 度。CS 的平均消除是 4.07 m 和 34.29 m 在鲕状并且桂林分别地。在一个特定的区域以内或在座舱和斗淋石灰岩地区常见的地形之间的如此的差别可以在石灰岩地区常见的地形风景的开发揭示不同控制。 | LIANG Fuyuan DU Yunyan GE Yong LI Ce | 2014 | Journal of Geographical Sciences2014，24，6： | 4 |
| 20 | OPTIMIZED MEANSHIFT TARGET REFERENCE MODEL BASED ON IMPROVED PIXEL WEIGHTING IN VISUAL TRACKING显示文摘The generic Meanshift is susceptible to interference of background pixels with the target pixels in the kernel of the reference model, which compromises the tracking performance. In this paper, we enhance the target color feature by attenuating the background color within the kernel through enlarging the pixel weightings which map to the pixels on the target. This way, the background pixel interference is largely suppressed in the color histogram in the course of constructing the target reference model. In addition, the proposed method also reduces the number of Meanshift iterations, which speeds up the algorithmic convergence. The two tests validate the proposed approach with improved tracking robustness on real-world video sequences. | Chen Ken Song Kangkang Kyoungho Choi Guo Yunyan | 2013 | Journal of Electronics(China)2013，30，3： | 4 |
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