|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The combined genotypes effect of ESR and FSHβ genes on litter size traits in five different pig breeds显示文摘Estrogen receptor (ESR) and Follicular-stimula-ting hormone beta subunit (FSHβ) genes were chosen as candidates to determine whether they control litter size and some other reproductive traits in swine. 269 sows from five different pig breeds were genotyped by an established PCR-RFLPs protocol at both ESR and FSHβ loci. The effects of both ESR and FSHβ on pig reproductive traits, including total number born (TNB) and number born alive (NBA), are analyzed by SAS software (version 6.12). These computation results demonstrated that both ESR locus and FSHβ locus are the major genes influencing litter size in pigs. The sows of BBBB combined genotype of ESR and FSHβ loci generally produce 1.85-3.01 TNB and 2.0-3.0 NBA more than those of ABAA combined genotype. The notable effect of ESR locus and FSHβ locus on litter size of pigs have made it possible to improve the pig reproduction by Marker-assisted selection (MAS). Moreover, introgression of the beneficial alleles into commercial pig breeding lines, | Kefei Chen Ning Li Lusheng Huang Qin Zhang Jiansheng Zhang Shiquan Sun Ming Luo Changxin Wu | 2001 | Chinese Science Bulletin2001，46，2： | 21 |
| 2 | Changes in cerebral hemodynamics in patients with posttraumatic diffuse brain swelling after external intraventricular drainage显示文摘 | Kefei Chen Jirong Dong Tian Xia Chunlei Zhang Wei Zhao Qinyi Xu Xuejian Cai | 2015 | Chinese Journal of Traumatology2015，18，2： | 13 |
| 3 | An Investigation of Optimal Machine Learning Methods for the Prediction of ROTI显示文摘The rate of the total electron content(TEC)change index(ROTI)can be regarded as an effective indicator of the level of ionospheric scintillation,in particular in low and high latitude regions.An accurate prediction of the ROTI is essential to reduce the impact of the ionospheric scintillation on earth observation systems,such as the global navigation satellite systems.However,it is difficult to predict the ROTI with high accuracy because of the complexity of the ionosphere.In this study,advanced machine learning methods have been investigated for ROTI prediction over a station at high-latitude in Canada.These methods are used to predict the ROTI in the next 5 minutes using the data derived from the past 15 minutes at the same location.Experimental results show that the method of the bidirectional gated recurrent unit network(BGRU)outperforms the other six approaches tested in the research.It is also confirmed that the RMSEs of the predicted ROTI using the BGRU method in all four seasons of 2017 are less than 0.05 TECU/min.It is demonstrated that the BGRU method exhibits a high level of robustness in dealing with abrupt solar activities. | Fulong XU Zishen LI Kefei ZHANG Ningbo WANG Suqin WU Andong HU Lucas Holden | 2020 | Journal of Geodesy and Geoinformation Science2020，3，2： | 7 |
| 4 | 不同季节GPS掩星廓线精度的比较研究显示文摘以1a的探空资料为参照,对南半球4个不同季节COSMIC掩星观测的折射指数、温度及气压廓线在0~30km高度区间的精度进行了分析。结果表明,虽然就整个高度区间平均而言,春季掩星廓线的精度最差,但不同高度区间掩星廓线的精度差别较大。无论折射指数、气压还是温度,掩星廓线在5~25km区间的精度都优于0~5km与25~30km区间。在0~5km的低对流层,由于水汽的影响,夏季的折射指数廓线精度最低;冬季则最高。在5km以上,夏季气压廓线的精度比其他季节高。不同季节各高度层掩星温度廓线的精度则无显著差异。 | 徐晓华 Zhang Kefei 汪海洪 | 2010 | 武汉大学学报(信息科学版)2010，35，6： | 6 |
| 5 | GPS变形监测的位移显著性检验方法研究显示文摘目前普遍采用的位移显著性检验方法,是人为地将客观上的空间位移问题转化为地方(局部)坐标系中的1维或2维位移问题来进行检验,既使位移检验在理论上的严密性受到损害,又使GPS能够在协议地球坐标系(ITRF或WGS-84)中同时精确测定空间3维位移的优越性得不到充分利用。由于在位移转换过程中会引入误差,可能导致位移显著性检验结果不可靠,尤其是当位移量小而坐标转换误差大时可靠性更低。为了避免由于位移转换存在误差而影响位移显著性检验结果的可靠性,本文提出了用GPS进行变形监测时,直接在ITRF或WGS-84空间坐标参考框架下进行位移显著性检验的新方法—'变形误差椭球检验法',严密地推导了有关理论公式,给出了具体的检验方法,并进行了实例计算和分析。 | 陈刚 胡友健 赵斌 Kefei Zhang 梁新美 | 2008 | 测绘科学2008，33，2： | 5 |
| 6 | Functional assembly of root-associated microbial consortia improves nutrient efficiency and yield in soybean显示文摘Root-associated microbes are critical for plant growth and nutrient acquisition. However, scant information exists on optimizing communities of beneficial root-associated microbes or the mechanisms underlying their interactions with host plants. In this report, we demonstrate that rootassociated microbes are critical influencers of host plant growth and nutrient acquisition. Three synthetic communities(SynComs) were constructed based on functional screening of 1,893 microbial strains isolated from root-associated compartments of soybean plants. Functional assemblage of SynComs promoted significant plant growth and nutrient acquisition under both N/P nutrient deficiency and sufficiency conditions.Field trials further revealed that application of SynComs stably and significantly promoted plant growth, facilitated N and P acquisition, and subsequently increased soybean yield. Among the tested communities, SynCom1 exhibited the greatest promotion effect, with yield increases of up to 36.1% observed in two field sites. Further RNA-seq implied that SynCom application systemically regulates N and P signaling networks at the transcriptional level, which leads to increased representation of important growth pathways, especially those related to auxin responses. Overall,this study details a promising strategy for constructing SynComs based on functional screening,which are capable of enhancing nutrient acquisition and crop yield through the activities of beneficial root-associated microbes. | Cunhu Wang Yanjun Li Mingjia Li Kefei Zhang Wenjing Ma Lei Zheng Hanyu Xu Baofeng Cui Ran Liu Yongqing Yang Yongjia Zhong Hong Liao | 2021 | Journal of Integrative Plant Biology2021，63，6： | 5 |
| 7 | Single event upset induced multi-block error and its mitigation strategy for SRAM-based FPGA显示文摘According to the SRAM-based FPGA's single event effect problem in space application,single event upset induced multi-block error(SEU-MBE) phenomenon and its mitigation strategy are studied in the paper.After analyzing the place and route result,the paper points out that the essence of SEU-MBE is that some important modules exceed the safe internal distance.Two approaches,area constraint method(ACM) and incremental route algorithm(IRA),are proposed,which can reduce the error rate by manipulating programmable switch matrix and interconnection points within FPGA route resource.Fault injection experiments indicate that error detection rate is above 98.6% for both strategies,and FPGA resources increment and performance penalty are around 10%. | XING KeFei YANG JianWei ZHANG ChuangSheng HE Wei | 2011 | Science China(Technological Sciences)2011，54，10： | 5 |
| 8 | 电离层残差对掩星反演温度精度的影响显示文摘本文以MSIS90大气模式和3D NeUoG电离层模式为大气背景,用三维射线追踪法模拟研究了太阳活动强度、地方时、掩星平面方位角对弯曲角电离层残差和温度电离层残差的影响,以及电离层残差对全球日平均温度的影响.结果表明:电离层残差是平流层顶部(35-50 km)和中间层底部(50-70 km)掩星大气温度反演的主要误差.在太阳活动活跃期,电离层残差对单一掩星事件的平流层顶部平均温度的影响可达1.8 K,中间层底部平均温度的影响可达7 K;对全球日平均温度的影响在平流层顶可达-0.6 K,在70 km高度处可达1.2 K.发展新的电离层改正方法或电离层残差修正算法对提高掩星大气反演精度和全球气候监测意义重大. | 柳聪亮 Gottfried Kirchengast Kefei Zhang 谭志祥 Johannes Fritzer 孙越强 | 2014 | 地球物理学报2014，57，8： | 5 |
| 9 | Secure searchable public key encryption against insider keyword guessing attacks from indistinguishability obfuscation显示文摘Public key encryption with keyword search(PEKS)enables one to search encrypted data containing some keyword without decrypting the data in public key setting.Boneh et al.[1]introduced the notion of PEKS,but later Byun et al.[2]showed the scheme in[1]is vulnerable to the outsider/insider keyword guessing attacks(KGA).Many previous PEKS studies have tackled | Lixue SUN Chunxiang XU Mingwu ZHANG Kefei CHEN Hongwei LI | 2018 | Science China(Information Sciences)2018，61，3： | 4 |
| 10 | 电离层干扰对GPS掩星弯曲角和温度精度的影响显示文摘以MSIS90大气模式和3DNeUoG电离层模式为背景大气,仿真模拟了电离层暴、电离层行扰和电离层槽对GPS掩星弯曲角电离层残差及温度精度的影响。结果表明,在太阳活动活跃期,弯曲角电离层残差在35~50km高度范围内可达1.5μrad,其标准差可达0.9μrad;在15~35km高度范围内可达4μrad,其标准差可达1.4μrad。电离层暴和电离层槽可使弯曲角电离层残差标准差增大20多倍;电离层行扰可使弯曲角电离层残差标准差增大数倍。电离层干扰引起的电离层残差可使15~35km高度范围内温度反演误差高达8K,这样的温度误差会对掩星观测的日平均温度和月平均温度产生显著影响。因此,需要发展新的电离层修正方法;在掩星气候监测中,需加强电离层监测,并结合监测结果剔除电离层干扰误差。 | 柳聪亮 Zhang Kefei 谭志祥 孙越强 白伟华 | 2014 | 武汉大学学报(信息科学版)2014，39，11： | 3 |
| 11 | 澳大利亚上空COSMIC掩星廓线的反演显示文摘基于几何光学反演方法,由附加相位延迟序列出发,对2007年6月6日发生在澳大利亚上空的一次COSMIC掩星事件进行了反演。将反演得到的折射角、折射率、干温与湿度廓线分别与COSMIC数据分析与管理中心(COSMIC data analysis and archive center,CDAAC)的相应产品进行了比较。结果表明,两者在低对流层存在较显著的差异。以距离该掩星地点300 km以内、观测时间差异2 h以内的无线电探空资料为参照,反演的折射率廓线与CDAAC的折射率廓线在低对流层都存在一定的误差。对于该掩星事件,CDAAC通过变分法反演的湿度廓线并不比本文的反演结果更接近探空廓线;在1 km以下,其变化趋势甚至与探空结果相矛盾。 | 徐晓华 Zhang Kefei Fu Erjiang 罗佳 | 2008 | 武汉大学学报(信息科学版)2008，33，8： | 3 |
| 12 | A performance analysis of future global navigation satellite systems显示文摘 | Cedric Seynat Allison Kealy and Zhang Kefei | 2004 | Journal of Global Positioning Systems2004，3，12： | 1 |
| 13 | Deformation Monitoring and Analysis using Victorian Regional CORS Data 显示文摘 | Kefei Zhang Youjian Hu Gangiun Liu etc | 2005 | Journal of GPS No 12005，1，： | 1 |
| 14 | GNSS-based tomography reconstruction of ionospheric electron density distribution using a combined algorithm显示文摘 | Wen Debao Zhang Kefei Norman R | | 0，，09： | 1 |
| 15 | Deformation monitoring and analysis using Victorian re gional CORS data显示文摘 | ZHANG KEFEI HU YOUJIAN LIU GANGJUN | 2005 | Journal of Global Positioning Sys tems2005，4，1： | 1 |
| 16 | Deformation Monitoring and Analysis Using Victorian Regional CORS Data显示文摘 | KEFEI ZHANG YOUJIAN HU GANGJUN LIU | 2005 | Journal of GPS2005，4，1： | 1 |
| 17 | On the relativistic doppler effect for precise velocity determination using GPS显示文摘 | Jason Zhang Kefei Zhang Ron Grenfell | 2006 | J of Geodesy2006，80，2： | 1 |
| 18 | 3D Hyperbranched Hollow Carbon Nanorod Architectures for High‐Performance Lithium‐Sulfur Batteries显示文摘 | Shuangqiang Chen Xiaodan Huang Hao Liu Bing Sun Waikong Yeoh Kefei Li Jinqiang Zhang Guoxiu Wang | 2014 | Adv. Energy Mater2014，，8： | 1 |
| 19 | A per- formance analysis of future global navigation satellite systems显示文摘 | Cedric Seynat Allison Kealy Kefei Zhang | 2004 | Journal of Global Positioning Systems2004，3，2： | 1 |
| 20 | De formation monitoring and analysis using victorian re- gional CORS data 显示文摘 | ZHANG Kefei HU Youjian LIU Gangjun | 2005 | Journal of Global Positioning System2005，4，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员