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324篇 您的检索式:作者名="YuTao"
    题名 作者 年代 出处 被引量
1Shear-wave splitting beneath Yunnan area of Southwest China显示文摘Systematic analyses of seismic data recorded by the Yunnan regional seismograph network reveal significant crustal and upper mantle anisotropy.Splitting of the S phase of local earthquakes and teleseismic SKS,PKS,and SKKS phases indicates time-delays from 1.60 ms/km to 2.30 ms/km in the crust,and from 0.55 s to 1.65 s in the upper mantle which corresponds to an anisotropic layer with a thickness about between 55-165 km.The polarization orientations of fast shear waves in the crust are complicated with a predominantly north-south direction,and the mantle anisotropy has a nearly west-east direction.Our results show different deformation styles and mechanisms exist between the crust and upper mantle.Yutao Shi Yuan Gao Youjin Su Qiong Wang 2012Earthquake Science2012,25,1:46
2Crust-mantle coupling in North China:Preliminary analysis from seismic anisotropy显示文摘Data from the CASN(Capital Area Seismograph Network),NSNC(National Seismograph Network of China),and IRIS(Incorporated Research Institutions for Seismology) are compared with data from a temporary North China Seismic Array to obtain the background orientation of the horizontal crustal principal compressive stress at NE 95.1°±15.4° in North China.Data are corrected for disturbances of faults and irregular tectonics,and are used to constrain the fast SKS polarization at NE 110.2°±15.8° in North China.Individual station analyses suggests that there is consistently more than 10° difference between the polarizations of fast shear-wave in the crust and those of fast SKS phases.Azimuthally anisotropic phase velocities of Rayleigh waves at different periods also indicate an orientation change for fast velocity with depth.It suggests the crust-mantle coupling in North China follows neither the simple decoupling model nor the strong coupling model.Instead,it is possibly some inhomogeneous combination of two models or some gradual-change model of physical characteristics.This study shows that anisotropy in the crust and mantle could be multiply characterized more correctly and crust-mantle coupling could be analyzed further,if increasing near-field shear-wave splitting data that indicate crustal anisotropy,combined with the azimuthal anisotropy of Rayleigh waves,besides the result of SKS splitting travelling through lithosphere and surface GPS measurements.GAO Yuan WU Jing YI GuiXi SHI YuTao 2010Chinese Science Bulletin2010,55,31:34
3Shear-wave splitting in the crust:Regional compressive stress from polarizations of fast shear-waves显示文摘When propagating through anisotropic rocks in the crust,shear-waves split into faster and slower components with almost orthogonal polarizations.For nearly vertical propagation the polarization of fast shear-wave(PFS)is parallel to both the strike of the cracks and the direction of maximum horizontal stress,therefore it is possible to use PFS to study stress in the crust.This study discusses several examples in which PFS is applied to deduce the compressive stress in North China,Longmenshan fault zone of east edge of Tibetan plateau and Yunnan zone of southeast edge of Tibetan plateau,also discusses temporal variations of PFS orientations of 1999 Xiuyan earthquake sequences of northeastern China.The results are consistent to those of other independent traditional stress measurements.There is a bridge between crustal PFS and the crustal principal compressive stress although there are many unclear disturbance sources.This study suggests the PFS results could be used to deduce regional and in situ principal compressive stress in the crust only if there are enough seismic stations and enough data.At least,PFS is a useful choice in the zone where there are a large number of dense seismic stations.Yuan Gao Yutao Shi Jing Wu Lingxue Tai 2012Earthquake Science2012,25,1:20
4A rupture blank zone in middle south part of Longmenshan Faults: Effect after Lushan M_s7.0 earthquake of 20 April 2013 in Sichuan, China显示文摘On April 20, 2013, the Lushan Ms7.0 earthquake struck at the southern part of the Longmenshan fault in the eastern Tibetan Plateau, China. The shear-wave splitting in the crust indicates a connection between the direction of the principal crustal compressive stress and the fault orientation in the Longmenshan fault zone. Our relocation analysis of the aftershocks of the Lushan earthquake shows a gap between the location of the rupture zone of the Lushan Ms7.0 earthquake and that of the rupture zone of the Wenchuan Ms8.0 earthquake. We believe that stress levels in the crust at the rupture gap and its vicinity should be monitored in the immediate future. We suggest using controlled source borehole measurements for this purpose.GAO Yuan WANG Qiong ZHAO Bo SHI YuTao 2014Science China Earth Sciences2014,57,9:18
5MECHANISM DESIGN AND MOTION ANALYSIS OF A SPHERICAL MOBILE ROBOT显示文摘A new spherical mobile robot BHQ-1 is designed. The spherical robot is driven by two internally mounted motors that induce the ball to move straight and turn around on a flat surface. A dynamic model of the robot is developed with Lagrange method and factors affecting the driving torque of two motors are analyzed. The relationship between the turning radius of the robot and the length of two links is discussed in order to optimize its mechanism design. Simulation and experimental results demonstrate the good controllability and motion performance of BHQ-1.Zhan Qiang Jia Chuan Ma Xiaohui Zhai Yutao 2005Chinese Journal of Mechanical Engineering2005,18,4:16
6Management earnings forecasts and analyst forecasts:Evidence from mandatory disclosure system显示文摘Distinct from the literature on the effects that management earnings forecasts(MEFs) properties, such as point, range and qualitative estimations, have on analyst forecasts, this study explores the effects of selective disclosure of MEFs.Under China's mandatory disclosure system, this study proposes that managers issue frequent forecasts to take advantage of opportune changes in predicted earnings. The argument herein is that this selective disclosure of MEFs increases information asymmetry and uncertainty, negatively influencing analyst earnings forecasts. Empirical evidence shows that firms that issue more frequent forecasts and make significant changes in MEFs are less likely to attract an analyst following, which can lead to less accurate analyst forecasts. The results imply that the selective disclosure of MEFs damages information transmission and market efficiency, which can enlighten regulators seeking to further enhance disclosure policies.Yutao Wang Yunsen Chen Juxian Wang 2015China Journal of Accounting Research2015,,2:15
7Effects of pyrite on the spontaneous combustion of coal显示文摘Jun Deng Xiaofeng Ma Yutao Zhang Yaqing Li Wenwen Zhu 2015International Journal of Coal Science & Technology2015,2,4:14
8Engineered three-dimensional scaffolds for enhanced bone regeneration in osteonecrosis显示文摘Osteonecrosis,which is typically induced by trauma,glucocorticoid abuse,or alcoholism,is one of the most severe diseases in clinical orthopedics.Osteonecrosis often leads to joint destruction,and arthroplasty is eventually required.Enhancement of bone regeneration is a critical management strategy employed in osteonecrosis therapy.Bone tissue engineering based on engineered three-dimensional(3D)scaffolds with appropriate architecture and osteoconductive activity,alone or functionalized with bioactive factors,have been developed to enhance bone regeneration in osteonecrosis.In this review,we elaborate on the ideal properties of 3D scaffolds for enhanced bone regeneration in osteonecrosis,including biocompatibility,degradability,porosity,and mechanical performance.In addition,we summarize the development of 3D scaffolds alone or functionalized with bioactive factors for accelerating bone regeneration in osteonecrosis and discuss their prospects for translation to clinical practice.Tongtong Zhu Yutao Cui Mingran Zhang Duoyi Zhao Guangyao Liu Jianxun Ding 2020Bioactive Materials2020,5,3:14
9MULTI-GRANULARITY EVOLUTION ANALYSIS OF SOFTWARE USING COMPLEX NETWORK THEORY显示文摘软件系统是一种典型类型人造复杂系统。理解他们的进化能导致更好的软件工程惯例。在这份报纸,作者把复杂网络理论用作一个工具分析进化面向对象(OO ) 从一个 multigranularity 观点的软件。首先,网络建模的一个多颗粒度软件被建议从颗粒度的三个层次代表一个多版本软件系统的拓扑的结构。然后,广泛地在复杂网络理论使用的一些参数被使用描绘软件网络。由在连续软件系统跟踪参数值,我们关于软件进化有更好的理解。案例研究在一个开放源代码 OO 工程上被进行, Azureus 当说明我们的途径的一个例子,和位于进化特征下面的一些被揭开。这些结果提供一种不同尺寸给我们软件进化并且也的理解为 OO 软件系统的设计和发展是很有用的。Weifeng PAN Bing LI Yutao MA Jing LIU 2011Journal of Systems Science & Complexity2011,24,6:13
10Independent directors' board networks and controlling shareholders' tunneling behaviorq显示文摘As one of the channels by which board directors build important relationships,board networks can affect the governance role of independent directors. Defining director board networks as their connections based on direct ties they establish when serving on at least one common board, this paper explores the role of the network centrality of independent directors in restraining tunneling behavior by controlling shareholders in the Chinese capital market.Our empirical evidence shows that tunneling behavior by controlling shareholders is negatively related to the network centrality of independent directors and that this relationship is stronger when non-operating fund occupation is used as the measure of tunneling. The results of our study show that board networks can help independent directors to restrain tunneling behavior by large shareholders, which plays a positive role in corporate governance.ó 2013 Production and hosting by Elsevier B.V. on behalf of China Journal of Accounting Research. Founded by Sun Yat-sen University and City University of Hong Kong.Yunsen Chen Yutao Wang Le Lin 2014China Journal of Accounting Research2014,,2:13
11Mushroom Poisoning Outbreaks-China,2020显示文摘What is already known about this topic?Acute liver failure,rhabdomyolysis,acute renal failure,and hemolysis caused by poisonous mushrooms are the most important mushroom poisoning threats to the Chinese population.The most notorious lethal mushrooms are the species from genera Amanita,Lepiota,and Galerina that cause acute liver failure,and Russula subnigricans that leads to rhabdomyolysis.What is added by this report?In 2020,the total number of investigations reached 676,involving an estimated 102 species of poisonous mushrooms,24 of which were newly recorded in China.Gyromitra venenata was newly discovered in incidents in Yunnan and Guizhou provinces and were the first reported poisonings due to gyromitrins in China since 2000.The rare poisoning Shiitake mushroom dermatitis was recorded in China.Hemolysis poisoning caused by Paxillus involutus was recorded for the second time since the beginning of the new century,resulting in one death in Inner Mongolia Autonomous Region.What are the implications for public health practice?Promoting knowledge about safe consumption of mushrooms is essential to reduce mushroom poisonings.It is not wise to collect and eat wild mushrooms.For southwestern provinces such as Yunnan,especially,caution must be exercised with unfamiliar mushroom species.Haijiao Li Hongshun Zhang Yizhe Zhang Jing Zhou Yu Yin Qian He Shaofeng Jiang Peibin Ma Yutao Zhang Ke Wen Yuan Yuan Nan Lang Bowen Cheng Junjia Lu Chengye Sun 2021China CDC weekly2021,3,3:13
12A type of M^2 -transmitter N^2 -receiver MIMO radar array and 3D imaging theory显示文摘With two-dimensional synthetic apertures,a wideband radar array can realize 3D imaging of air targets,but this needs large numbers of antenna elements.Furthermore,when the transmitting frequency is very high,the interval of array elements makes it hard to fit the available space,which makes the imaging resolution worse.This paper proposes a type of M 2 -transmitter N 2 -receiver multiple-input multiple-output (MIMO) radar,which is equivalent to a rectangular radar array with (M N) 2 T/R antenna elements based on phase center approximation theory,and which can realize the 3D imaging of air targets.Corresponding 3D imaging theory and MIMO inverse synthetic aperture radar (MIMO-ISAR) 3D imaging theory are also proposed in this paper,and two simulations are given to show their validity.ZHU YuTao SU Yi 2011Science China(Information Sciences)2011,54,10:13
13Seismic relocation,focal mechanism and crustal seismic anisotropy associated with the 2010 Yushu M_S7.1 earthquake and its aftershocks显示文摘The 2010 Yushu MS7.1 earthquake occurred in Ganzi-Yushu fault,which is the south boundary of Bayan Har block.In this study,by using double difference algorithm,the locations of mainshock(33.13°N,96.59°E,focal depth 10.22 km)and more than 600 aftershocks were obtained.The focal mechanisms of the mainshock and some aftershocks with MS>3.5 were estimated by jointly using broadband velocity waveforms from Global Seismic Network(GSN)and Qinghai Seismic Network as well.The focal mechanisms and relocation show that the strike of the fault plane is about 125°(WNW-ESE),and the mainshock is left-laterally strike-slip.The parameters of shear-wave splitting were obtained at seismic stations of YUS and L6304 by systematic analysis method of shear-wave splitting(SAM)method.Based on the parameters of shear-wave splitting and focal mechanism,the characteristics of stress field in seismic source zone were analyzed.The directions of polarization at stations YUS and L6304 are different.It is concluded that after the mainshock and the MS6.3 aftershock on April 14,the stress-field was changed.Bo Zhao Yutao Shi Yuan Gao 2012Earthquake Science2012,25,1:13
14Corporate fraud and bank loans:Evidence from china显示文摘Receiving punishment from regulators for corporate fraud can affect financing contracts between a firm and its bank,as both the firm's credit risk and information risk increase after punishment By focusing on Chinese firms'borrowing behavior after events of corporate fraud,we find that firms'bank loans after punishment are not only significantly lower,but are also less than those for non-fraudulent firms.In addition,loan interest rates after punishment are not only higher than before,but also higher than those for their non-fraudulent counterparts.In addition,we find that corporate fraud indirectly destabilizes the'performance-bank loan'relationship.Our results suggest that corporate fraud negatively affects a firm's ability to source debt financing,which provides new evidence about the economic consequences of fraud.Yunsen Chen Song Zhu Yutao Wang 2011China Journal of Accounting Research2011,,3:12
15Piglets cloned from induced pluripotent stem cells显示文摘Nana Fan Jijun Chen Zhouchun Shang Hongwei Dou Guangzhen Ji Qingjian Zou Lu Wu Lixiazi He Fang Wang Kai Liu Na Liu Jianyong Han Qi Zhou Dengke Pan Dongshan Yang Bentian Zhao Zhen Ouyang Zhaoming Liu Yu Zhao Lin Lin Chongming Zhong Quanlei Wang Shouqi Wang Ying Xu Jing Luan Yu Liang Zhenzhen Yang Jing Li Chunxia Lu Gabor Vajta Ziyi Li Hongsheng Ouyang Huayan Wang Yong Wang Yang Yang Zhonghua Liu Hong Wei Zhidong Luan Miguel A Esteban Hongkui Deng Huanming Yang Duanqing Pei Ning Li Gang Pei Lin Liu Yutao Du Lei Xiao Liangxue Lai 2013Cell Research2013,23,1:12
16Relocation of aftershocks of the Wenchuan M_S8.0 earthquake and its implication to seismotectonics显示文摘From 14:28 (GMT+8) on May 12th,2008,the origin time of MS8.0 Wenchuan earthquake,to December 31th,2008,more than 10 000 aftershocks (M≥2.0) had been recorded by the seismic networks in Sichuan and surrounding areas.Using double difference algorithm,the main shock and more than 7 000 aftershocks were relocated.The aftershocks distribute about 350 km long.The depths of aftershocks are mainly between 10 km and 20 km.The average depth of aftershocks is about 13 km after relocation.In the southwest,the distribution of aftershocks is along the back-range fault,the central-range fault and the front-range fault of Longmenshan faults.In the middle,the distribution of aftershocks is along the central-range fault.In the north,aftershocks are relocated along the Qingchuan-Pingwu fault.Relocations suggest that the back-range fault mainly induced and controlled the aftershock occurrence in the northern section of aftershocks sequence.The MS8.0 main shock is between central-range and front-range of Longmenshan faults and is near the shear plane of the fault bottom.From the depth distribution of aftershock sequence,it suggests that these three faults show imbricate thrust structure.Bo Zhao Yutao Shi Yuan Gao 2011Earthquake Science2011,24,1:12
17Spatial distribution pattern of Picea schrenkiana population in the Middle Tianshan Mountains and the relationship with topographic attributes显示文摘The spatial distribution of plant populations is an important feature of population structure and it determines the population's ecological preferences,biological characteristics and relationships with environmental factors.The point pattern analysis method was adopted to study the distribution pattern of Picea schrenkiana individuals of different size classes and the correlations between two size classes as well as the impact of topographical attributes on the population distribution.With increasing diameter at breast height,the plant density of the P.schrenkiana population showed a declining trend.Old trees showed a random distribution at a small spatial scale(0-12 m),whereas saplings,small trees and big trees all had an aggregated distribution at all scales.With the increase of tree age,the scales at which maximal aggregation occurred gradually increased and the aggregation strength decreased.At a small scale(0-16 m),all size classes showed a negative correlation and the larger the difference between tree size,the more significant the negative correlation.The number of medium,big and old trees had a significantly positive correlation with elevations,whereas the number of saplings and small trees was not significantly correlated with elevations.The numbers of saplings,small and medium trees showed a significant positive correlation with slope gradient,whereas the number of big trees was not significantly correlated,and the number of old trees was negatively correlated with gradient.With the exception of old trees,saplings,small,medium and big trees showed negative correlations with convexity index.The study provides a theoretical basis for the conservation,rehabilitation and sustainable management of forest ecosystems in the Tianshan Mountains.YuTao ZHANG JiMei LI ShunLi CHANG Xiang LI JianJiang LU 2012Journal of Arid Land2012,4,4:12
18AMiner:Search and Mining of Academic Social Networks显示文摘AMiner is a novel online academic search and mining system,and it aims to provide a systematic modeling approach to help researchers and scientists gain a deeper understanding of the large and heterogeneous networks formed by authors,papers,conferences,journals and organizations.The system is subsequently able to extract researchers’profiles automatically from the Web and integrates them with published papers by a way of a process that first performs name disambiguation.Then a generative probabilistic model is devised to simultaneously model the different entities while providing a topic-level expertise search.In addition,AMiner offers a set of researcher-centered functions,including social influence analysis,relationship mining,collaboration recommendation,similarity analysis and community evolution.The system has been in operation since 2006 and has been accessed from more than 8 million independent IP addresses residing in more than 200 countries and regions.Huaiyu Wan Yutao Zhang Jing Zhang Jie Tang 2019Data Intelligence2019,1,1:11
19Mushroom Poisoning Outbreaks--China,2019显示文摘What is already known about this topic?Mushroom poisoning is becoming one of the most serious food safety issues in China,which is responsible for nearly a half of all oral poisoning deaths.What is added by this report?In China,many mushrooms were previously“recorded”as poisonous.In this study,about 70 species obtained from mushroom poisoning incidents including several new records were confirmed accurately by morphological and molecular evidence in 2019,and spatial and temporal distribution characters of 13 lethal mushrooms were summarized systematically.What are the implications for public health practice?Precise and timely species identification is of pivotal importance in mushroom incidents.More efforts and cooperation are continued to be needed urgently for the governments,CDC staff,doctors and mycologists in future.Haijiao Li Hongshun Zhang Yizhe Zhang Kaiping Zhang Jing Zhou Yu Yin Shaofeng Jiang Peibin Ma Qian He Yutao Zhang Ke Wen Yuan Yuan Nan Lang Junjia Lu Chengye Sun 2020China CDC weekly2020,2,2:11
20Jasmonic acid carboxyl methyltransferase regulates development and herbivory-induced defense response in rice显示文摘Jasmonic acid(JA) and related metabolites play a key role in plant defense and growth. JA carboxyl methyltransferase(JMT) may be involved in plant defense and development by methylating JA to methyl jasmonate(Me JA) and thus influencing the concentrations of JA and related metabolites. However, no JMT gene has been well characterized in monocotyledon defense and development at the molecular level. After we cloned a rice JMT gene,Os JMT1, whose encoding protein was localized in the cytosol, we found that the recombinant Os JMT1 protein catalyzed JA to Me JA. Os JMT1 is up-regulated in response to infestation with the brown planthopper(BPH; Nilaparvata lugens). Plants in which Os JMT1 had been overexpressed(oeJMT plants) showed reduced height and yield. These oe-JMT plants also exhibited increased Me JA levels but reduced levels of herbivore-induced JA and jasmonoyl-isoleucine(JAIle). The oe-JMT plants were more attractive to BPH female adults but showed increased resistance to BPH nymphs,probably owing to the different responses of BPH female adults and nymphs to the changes in levels of H_2O_2 and Me JA in oe-JMT plants. These results indicate that Os JMT1,by altering levels of JA and related metabolites, plays a role in regulating plant development and herbivore-induced defense responses in rice.Jinfeng Qi Jiancai Li Xiu Han Ran Li Jianqiang Wu Haixin Yu Lingfei Hu Yutao Xiao Jing Lu Yonggen Lou 2016Journal of Integrative Plant Biology2016,58,6:10
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