|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Evaluating the accuracy performance of Lucas-Kanade algorithm in the circumstance of PIV application显示文摘Lucas-Kanade(LK) algorithm, usually used in optical flow filed, has recently received increasing attention from PIV community due to its advanced calculation efficiency by GPU acceleration. Although applications of this algorithm are continuously emerging,a systematic performance evaluation is still lacking. This forms the primary aim of the present work. Three warping schemes in the family of LK algorithm: forward/inverse/symmetric warping, are evaluated in a prototype flow of a hierarchy of multiple two-dimensional vortices. Second-order Newton descent is also considered here. The accuracy & efficiency of all these LK variants are investigated under a large domain of various influential parameters. It is found that the constant displacement constraint, which is a necessary building block for GPU acceleration, is the most critical issue in affecting LK algorithm's accuracy, which can be somehow ameliorated by using second-order Newton descent. Moreover, symmetric warping outbids the other two warping schemes in accuracy level, robustness to noise, convergence speed and tolerance to displacement gradient, and might be the first choice when applying LK algorithm to PIV measurement. | PAN Chong XUE Dong XU Yang WANG JinJun WEI RunJie | 2015 | Science China(Physics,Mechanics & Astronomy)2015，58，10： | 9 |
| 2 | CDP1, a novel component of chloroplast division site positioning system in Arabidopsis显示文摘叶绿体是从 endosymbiotic cyanobacteria 演变的植物特定的细胞器。他们通过二进制分裂划分。叶绿体部门地点的选择为对称的叶绿体部门是枢轴的。在 E。coli,在房间的中点部门地点放被 Min 系统的动态摆动调整,它包括 MinC,头脑和矿。在植物的头脑和矿的相当或相同的事物涉及叶绿体分割。MinC 的相当或相同的事物仍然没在更高的植物被识别。然而,象 FtsZ 一样蛋白质, ARC3,被发现地点放涉及叶绿体分割。这里,我们报导放 1 的那个叶绿体部门地点(AtCDP1 ) 是在 Arabidopsis 涉及叶绿体部门地点放置的新奇叶绿体部门蛋白质。AtCDP1 被与房间部门显型为殖民地在细菌屏蔽一个 Arabidopsis cDNA 表示图书馆发现。AtCDP1 只在 Arabidopsis 在年轻绿纸巾被表示。有多重部门地点的伸长的叶绿体在 loss-of-function cdp1 异种被观察。AtCDP1 的 Overexpression 也引起了一个叶绿体部门显型。蛋白质相互作用试金建议 AtCDP1 可以调停通过和 ARC3 的相互作用放的叶绿体部门地点。总的来说,我们的结果显示 AtCDP1 是放系统,和这个系统的工作机制的叶绿体部门地点的一个新奇部件与在原核生物的房间的传统的 MinCDE 系统的不同。 | Min Zhang Yong Hu Jingjing Jia Dapeng Li Runjie Zhang Hongbo Gao Yikun He | 2009 | Cell Research2009，19，7： | 5 |
| 3 | Dual-basis reconstruction techniques for tomographic PIV显示文摘As an inverse problem, particle reconstruction in tomographic particle image velocimetry attempts to solve a large-scale underdetermined linear system using an optimization technique. The most popular approach, the multiplicative algebraic reconstruction technique(MART), uses entropy as an objective function in the optimization. All available MART-based methods are focused on improving the efficiency and accuracy of particle reconstruction. However, those methods do not perform very well on dealing with ghost particles in highly seeded measurements. In this report, a new technique called dual-basis pursuit(DBP), which is based on the basis pursuit technique, is proposed for tomographic particle reconstruction. A template basis is introduced as a priori knowledge of a particle intensity distribution combined with a correcting basis to enable a full span of the solution space of the underdetermined linear system. A numerical assessment test with 2D synthetic images indicated that the DBP technique is superior to MART method, can completely recover a particle field when the number of particles per pixel(ppp) is less than 0.15, and can maintain a quality factor Q of above 0.8 for ppp up to 0.30. Unfortunately, the DBP method is difficult to utilize in 3D applications due to the cost of its excessive memory usage. Therefore, a dual-basis MART was designed that performed better than the traditional MART and can potentially be utilized for 3D applications. | YE ZhiJian GAO Qi WANG HongPing WEI RunJie WANG JinJun | 2015 | Science China(Technological Sciences)2015，58，11： | 4 |
| 4 | Antigenicity of tissues and organs from GGTA1/CMAH/β4GalNT2 triple gene knockout pigs显示文摘Clinical xenotransplantations have been hampered by human preformed antibody-mediated damage of the xenografts.To overcome biological incompatibility between pigs and humans,one strategy is to remove the major antigens[Gal,Neu5 Gc,and Sd(a)]present on pig cells and tissues.Triple gene(GGTAI,CMAH,and β4 GalNT2)knockout(TKO)pigs were produced in our laboratory by CRISPR-Cas9 targeting.To investigate the antigenicity reduction in the TKO pigs,the expression levels of these three xenoantigens in the cornea,heart,liver,spleen,lung,kidney,and pancreas tissues were examined.The level of human IgG/IgM binding to those tissues was also investigated,with wildtype pig tissues as control.The results showed that aGal,Neu5 Gc,and Sd(a)were markedly positive in all the examined tissues in wildtype pigs but barely detected in TKO pigs.Compared to wildtype pigs,the liver,spleen,and pancreas of TKO pigs showed comparable levels of human IgG and IgM binding,whereas corneas,heart,lung,and kidney of TKO pigs exhibited significantly reduced human IgG and IgM binding.These results indicate that the antigenicity of TKO pig is significantly reduced and the remaining xenoantigens on porcine tissues can be eliminated via a gene targeting approach. | Ronggen Wang Miaomiao Ruan Runjie Zhang Lei Chen Xiaoxue Li Bin Fang Chu Li Xueyang Ren Jiying Liu Qiang Xiong Lining Zhang Yong Jin Lin Li Rongfeng Li Ying Wang Haiyuan Yang Yifan Dai | 2019 | The Journal of Biomedical Research2019，33，4： | 3 |
| 5 | Impact of time lags on diurnal estimates of canopy transpiration and canopy conductance from sap-flow measurements of Populus cathayana in the Qinghai–Tibetan Plateau显示文摘Recently, canopy transpiration(Ec) has been often estimated by xylem sap-flow measurements. However, there is a significant time lag between sap flow measured at the base of the stem and canopy transpiration due to the capacitive exchange between the transpiration stream and stem water storage. Significant errors will be introduced in canopy conductance(gc) and canopy transpiration estimation if the time lag is neglected. In this study, a cross-correlation analysis was used to quantify the time lag, and the sap flowbased transpiration was measured to parameterize Jarvistype models of gcand thus to simulate Ecof Populus cathayana using the Penman–Monteith equation. The results indicate that solar radiation(Rs) and vapor pressure deficit(VPD) are not fully coincident with sap flow and have an obvious lag effect; the sap flow lags behind Rsand precedes VPD, and there is a 1-h time shift between Ecand sap flow in the 30-min interval data set. A parameterized Jarvis-type gc model is suitable to predict P. cathayana transpiration and explains more than 80% of the variation observed in gc, and the relative error was less than 25%, which shows a preferable simulation effect. The root mean square error(RMSEs)between the predicted and measured Ecwere 1.91 9 10-3(with the time lag) and 3.12 9 10-3cm h-1(without the time lag). More importantly, Ecsimulation precision that incorporates time lag is improved by 6% compared to the results without the time lag, with the mean relative error(MRE) of only 8.32% and the mean absolute error(MAE) of1.48 9 10-3cm h-1. | Hui Wang Kangning He Runjie Li Zhuping Sheng Yun Tian Jun Wen Bo Chang | 2017 | Journal of Forestry Research2017，28，3： | 3 |
| 6 | Conservation relation of generalized growth rate in boundary layers显示文摘The elementary task is to calculate the growth rates of disturbances when the e^N method in transition prediction is performed. However, there is no unified knowledge to determine the growth rates of disturbances in three-dimensional(3 D) flows. In this paper, we study the relation among the wave parameters of the disturbance in boundary layers in which the imaginary parts of wave parameters are far smaller than the real parts.The generalized growth rate(GGR) in the direction of group velocity is introduced, and the conservation relation of GGR is strictly deduced in theory. This conservation relation manifests that the GGR only depends on the real parts of wave parameters instead of the imaginary parts. Numerical validations for GGR conservation are also provided in the cases of first/second modes and crossflow modes. The application of GGR to the eN method in 3 D flows is discussed, and the puzzle of determining growth rates in 3 D flows is clarified. A convenient method is also proposed to calculate growth rates of disturbances in 3 D flows. Good agreement between this convenient method and existing methods is found except the condition that the angle between the group velocity direction and the x-direction is close to 90?which can be easily avoided in practical application. | Runjie SONG Lei ZHAO Zhangfeng HUANG | 2018 | Applied Mathematics and Mechanics(English Edition)2018，39，12： | 3 |
| 7 | Study on gas and wave in a receiving tube显示文摘气体和波浪是在一个收到的试管的运动在现在的纸数字地并且试验性地被调查。结果显示出那,当气体在稳定的繁殖以后严厉地被注入收到的试管,然后落下,接触脸的速度很快升起。然而,在试管的波浪的速度是几乎线性的,波浪能在收到的试管的靠近的结束被反映。与入口压力增加,波浪的速度和接触脸的稳定的速度也增加。当波浪打扫气体,有明显的热效果。反映的波浪能在开的结束加热令人疲乏不堪的气体。作为一个吸收器,在试管罐头的扩展和一位精神病医生几乎完全吸收反映的波浪。 | Dapeng Hu Shengtao Chen Jun Yang Zuzhi Chen Yuqiang Dai Che Zhu Runjie Liu | 2008 | Journal of Thermal Science2008，17，2： | 2 |
| 8 | Spatiotemporal Mapping of Salt Marshes in the Intertidal Zone of China during 1985-2019显示文摘This study mapped the areal extent,identified the species composition,and analyzed the changes of salt marshes in the intertidal zone of China during the period 1985–2019.With the aid of the cloud platform of the Google Earth Engine,we selected Landsat 5/8 and Sentinel-2 images and used the support vector machine classification method to extract salt marsh information for the years of 1985,1990,1995,2000,2005,2010,2015,and 2019.Seven major species of salt marshes:Phragmites australis,Suaeda spp.,Spartina alterniflora,Scirpus mariqueter,Tamarix chinensis,Cyperus malaccensis,and Sesuvium portulacastrum were identified.Our results showed that salt marshes are mainly distributed in Liaoning,Shandong,Jiangsu,Shanghai,and Zhejiang,with varying patterns of shrinking,expansion,or wavering in different places.The distribution of salt marshes has declined considerably from 151,324 ha in 1985 to 115,397 ha in 2019,a drop of 23.7%.During the same period,the area of native species has dropped 95.4%from 77,741 ha to 3,563 ha for Suaeda spp.and 45.1%from 60,511 ha to 33,193 ha for P.australis;on the contrary,the area of exotic species,S.alterniflora,has exhibited a sharp rise from just 99 ha to 67,527 ha.For the past 35 years,the driving factors causing salt marsh changes are mainly land reclamation,variations in water and sand fluxes,and interspecific competition and succession of salt marsh vegetation.These results provide fundamental reference information and could form the scientific basis for formulating policies for the conservation and utilization of salt marsh resources in China. | Guangwei Chen Runjie Jin Zhanjiang Ye Qi Li Jiali Gu Min Luo Yongming Luo George Christakos James Morris Junyu He Dan Li Hengwei Wang Li Song Qiuxuan Wang Jiaping Wu | 2022 | Journal of Remote Sensing2022，，1： | 2 |
| 9 | CFD and digital particle tracking to assess flow characteristics in the labyrinth flow path of a drip irrigation emitter显示文摘 | Yunkai Li Peiling Yang Tingwu Xu Shumei Ren Xiongcai Lin Runjie Wei Hongbing Xu | 2008 | Irrigation Science2008，，5： | 2 |
| 10 | Effectof fenvalerate on the reproduction and fitness costs of thebrown planthopper, Nilaparvata lugens and its resistancemechanism 显示文摘 | LING Shanfeng ZHANG Hong ZHANG Runjie | 2011 | Pesticide Biochemistry and Physiology2011，101，： | 1 |
| 11 | Relationship between temperature and function response in Cardiochiles philippinesis (Hymenoptera:Braconidae),a larval parasitoid of Cnaphalocrocis medinalis(Lepidoptera:Pyrallidae)显示文摘 | Zhang Runjie | 1996 | Environmental Entomology1996，25，6： | 1 |
| 12 | Study on Transformation of Ideas of Environmental Protection Administration and Construction of Ecological Civilization in China显示文摘The transformation process of ideas of environmental protection administration in China was introduced firstly,and then the connotation and construction of ecological civilization were analyzed. | Fu Baorong Yang Tao He Zhe Zuo Shiwen Gu Chunyu Liu Song Zhang Runjie | 2017 | Meteorological and Environmental Research2017，8，3： | 1 |
| 13 | CFD and digital particle tracking to assess flow characteristics in the labyrinth flow path of a drip irrigation emitter显示文摘 | Yunkai Li Peiling Yang Tingwu Xu Shumei Ren Xiongcai Lin Runjie Wei Hongbing Xu | 2008 | Irrigation Science2008，，5： | 1 |
| 14 | Digital carrier modulation and sampling issues of matrix converters 显示文摘 | Loh P C Rong Runjie Blaabjerg F | 2009 | IEEE Transactions on Power Electronics2009，24，7： | 1 |
| 15 | Design of tem- perature testing system in multi - parameter combined environmental test 显示文摘 | XU Guanhua HE Wen SHEN Runjie | 2012 | Applied Mechanics and Materi- als2012，157，： | 1 |
| 16 | Analysis of cracking proces- ses of sandstone in rockburst test显示文摘 | Li Dejian Zhao Fei Ma Runjie | 2013 | Applied Mechanics and Ma- terials2013，，： | 1 |
| 17 | Swimming Behavior Analysis Based on Bacterial Chemotaxis in Solution显示文摘 | Bin He Zhipeng Wang Chaoqun Liu Yonggang Li Runjie Shen | 2012 | Journal of Bionic Engineering2012，9，3： | 1 |
| 18 | Digital carrier modulation and sampling issues of matrix converters显示文摘 | Poh Chiang Loh Runjie Rong Frede Blaabjerg | 2009 | IEEE Transactions on Power Electronics2009，24，7： | 1 |
| 19 | Digital holography particle image velocimetry for the measurement of 3Dt-3c flows显示文摘 | Shen Gongxin Wei Runjie | 2005 | Opt & Lasers in Eng2005，43，10： | 1 |
| 20 | Digital holography particle image velocimetry for the measurement of 3Dt-3c flows显示文摘 | Shen Gongxin Wei Runjie | 2005 | Optics and Lasers in Engineering2005，43，10： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员