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1The 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 2001Chinese Science Bulletin2001,46,2:21
2Changes 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 2015Chinese Journal of Traumatology2015,18,2:13
3CCA-secure unidirectional proxy re-encryption in the adaptive corruption model without random oracles显示文摘Up to now, it is still an open question of how to construct a chosen-ciphertext secure unidirectional proxy re-encryption scheme in the adaptive corruption model. To address this problem, we propose a new unidirectional proxy re-encryption scheme, and prove its chosen-ciphertext security in the adaptive corruption model without random oracles. Compared with the best known unidirectional proxy re-encryption scheme proposed by Libert and Vergnaud in PKC'08, our scheme enjoys the advantages of both higher efficiency and stronger security.WENG Jian CHEN MinRong ANG YanJiang DENG Robert CHEN KeFei BAO Feng 2010Science China(Information Sciences)2010,53,3:12
4基于脉冲激励的地铁运营引起邻近建筑物内振动预测方法显示文摘根据振动系统传递特性,提出一种新的环境振动预测方法——实测脉冲传递函数预测方法。通过脉冲试验测得振源与邻近建筑物内测点的振动加速度,计算得到振动系统的振动响应传递函数;将实测的地铁运营振源的振动加速度代入传递函数公式,实现对建筑物内测点的振动加速度时程、频谱、1/3倍频程和z振级的预测。应用该方法预测隧道中心楼内测点振动加速度结果表明:隧道结构与隧道中心楼内测点振动加速度传递函数峰值频段为30~50Hz,隧道中心楼内振动加速度峰值频段为40~60Hz;土层和隧道中心楼基础结构对60Hz以上频段的振动具有很强的衰减作用,楼房基础结构有效地隔断了70Hz以上的高频振动。该方法可用于预测地铁运营引起的建筑物内振动。 Wang, Wenbin Liu, Weining Sun, Ning Li, Kefei Liu, Li 2012中国铁道科学2012,,4:12
5An 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 2020Journal of Geodesy and Geoinformation Science2020,3,2:7
6Anonymous handover authentication protocol for mobile wireless networks with conditional privacy preservation显示文摘With the development of the wireless communication technology and the popularity of mobile devices, the mobile wireless network(MWN) has been widely used in our daily life. Through the access point(AP), users could access the Internet anytime and anywhere using their mobile devices. Therefore, MWNs can bring much convenience to us. Due to the limitation of AP's coverage, the seamless handover frequently occurs in practical applications. How to guarantee the user's privacy and security and identify the real identity when he/she brings harm to the system becomes very challenging. To achieve such goals, many anonymous handover authentication(AHA) protocols have been proposed in the last several years. However, most of them have high computation costs because mobile nodes need to carry out the bilinear pairing operations or the hash-to-point operations. Besides, most of them cannot satisfy some critical requirements, such as non-traceability and perfect forward secrecy. In this paper, we first outline the security requirements of AHA protocols, and then propose a new AHA protocol to eliminate weaknesses existing in previous AHA protocols. Based on the hardness of two famous mathematical problems, we demonstrate that the proposed AHA protocol is secure against different kinds of attacks and can meet a variety of security requirements. It can be seen from the details of implementations that the proposed AHA protocol also has much less computation cost than three latest AHA protocols.Debiao HE Ding WANG Qi XIE Kefei CHEN 2017Science China(Information Sciences)2017,60,5:7
7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
8Accountable authority key policy attribute-based encryption显示文摘We present an accountable authority key policy attribute-based encryption (A-KPABE) scheme.In this paper,we extend Goyal's work to key policy attribute-based encryption setting.We first generalize the notion of accountable authority in key policy attribute-based encryption scenario,and then give a construction.In addition,our scheme is shown to be secure in the standard model under the modified Bilinear Decisional Diffie-Hellman (mBDDH) assumption.WANG YongTao CHEN KeFei LONG Yu LIU ZhaoHui 2012Science China(Information Sciences)2012,55,7:6
9The sorption mechanisms of Th(Ⅳ) on attapulgite显示文摘The surface properties of intrinsic and activated attapulgite were studied using potentiometric titration.The sorption mechanisms of Th(IV) on intrinsic and activated attapulgite were investigated by employing surface complexation model and FITEQL 3.2 code.The results indicated that the sorption sites of intrinsic attapulgite involved in the sorption process were main ion exchange site(≡ XNa/K),strong site(≡ SsOH) and weak site(≡ SwOH),while only strong site(≡ SsOH) and weak site(≡ SwOH) were predominant for activated attapulgite.At pH < 2.5,the species of Th(IV) was main Th4+ in aqueous solution;then the hydrolysis species of Th(IV)(i.e.,Th(OH)22+,Th(OH)+3 and Th(OH)04) gradually formed as pH increasing.For the sorption of Th(IV) on intrinsic attapulgite,both ion exchange species(≡ X2Th) and inner-sphere surface complexes(≡ SsOTh) were dominant,while only inner-sphere surface complexes(i.e.,≡ SsOThOH and ≡ SwOTh) were observed for Th(IV) sorption to activated attapulgite.In the presence of humic acid(HA),the sorption of Th(IV) on activated attapulgite was obviously enhanced;and both ≡ SsOH-HA-Th and ≡ SsOTh were the predominant speciation.It was also interesting to find that the addition of HA obviously provoked the desorption behavior of Th(IV).PAN DuoQiang FAN QiaoHui DING KeFei LI Ping LU Yan YU Tao XU Jiang WU WangSuo 2011Science China Chemistry2011,54,7:6
10GPS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
11Functional 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 2021Journal of Integrative Plant Biology2021,63,6:5
12Single 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 2011Science China(Technological Sciences)2011,54,10:5
13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
14Independent Prognostic Value of High-sensitivity C-reactive Protein in Patients with Coronary Artery Ectasia显示文摘Yintang Wang Yang Wang Shijie You Hongjian Wang Dong Yin Kefei Dou Weihua Song 2016Chinese Medical Journal2016,,21:4
15Secure 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 tackledLixue SUN Chunxiang XU Mingwu ZHANG Kefei CHEN Hongwei LI 2018Science China(Information Sciences)2018,61,3:4
16Neoadjuvant and Adjuvant Therapy in Intrahepatic Cholangiocarcinoma显示文摘Intrahepatic cholangiocarcinoma(ICC)is the second most common primary liver cancer and causes major economic and health burdens throughout the world.Although the incidence of ICC is relatively low,an upward trend has been seen over the past few decades.Owing to the lack of specific manifestations and tools for early diagnosis,most ICC patients have relatively advanced disease at diagnosis.Thus,neoadjuvant therapy is necessary to evaluate tumor biology and downstage these patients so that appropriate candidates can be selected for radical liver resection.However,even after radical resection,the recurrence rate is relatively high and is a main cause leading to death after surgery,which makes adjuvant therapy necessary.Because of its low incidence,studies in both neoadjuvant and adjuvant settings of ICC are lagging compared with other types of malignancy.While standard neoadjuvant and adjuvant regimens are not available in the current guidelines due to a lack of high-level evidence,some progress has been achieved in recent years.In this review,the available literature on advances in neoadjuvant and adjuvant strategies in ICC are evaluated,and possible challenges and opportunities for clinical and translational investigations in the near future are discussed.Xing Chen Jinpeng Du Jiwei Huang Yong Zeng Kefei Yuan 2022Journal of Clinical and Translational Hepatology2022,10,3:4
17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
18Optimistic fair exchange E-commerce protocol based on secret sharing显示文摘A key problem of electronic commerce (for short e-commerce) is fair exchange which guarantees that at the end of the transaction, either both parties involved in the transaction receive each other’s items or none do. A non-interactive optimistic fair exchange e-commerce protocol model based on the publicly verifiable secret sharing is presented. The main idea of our exchange protocol is to interchange verifiable and recoverable keys of the symmetric encryption for participants’ items. So it is especially suitable for exchange of large-size items. Furthermore, our protocol is efficient and simple as it does not need interactive proof system which has been adopted by a large quantity of previously proposed fair exchange protocols. Based on a modified (2,2) secret sharing scheme, a concrete non-interactive fair exchange e-commerce protocol is designed.Ma Changshe Lei Feiyu Chen Kefei 2006Journal of Systems Engineering and Electronics2006,17,4:3
19An efficient pairing-free certificateless signature scheme for resource-limited systems显示文摘Appendix A Introduction With the development of computation and communication,resource-limited systems have been quite widespread,such as wireless sensor networks(WSNs)[1,2],PDAs,cell phones and smartcards.However,these systems cannot executeLiangliang Wang Kefei Chen Yu Long Huige Wang 2017Science China(Information Sciences)2017,60,11:3
20LFSR-based Ring Signature Scheme显示文摘ZHENG Dong LI Xiangxue CHEN Kefei 2007Chinese Journal of Electronics2007,16,3:3
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