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| 1 | Comparing the Diagnostic Criteria for Gestational Diabetes Mellitus of World Health Organization 2013 with 1999 in Chinese Population显示文摘INTRODUCTION Gestational diabetes mellitus (GDM) was earlier defined as 'hyperglycemia first recognized during pregnancy' and has more recently been described by American Diabetes Association (ADA) (2012) as diabetes diagnosed during pregnancy that is not clearly overt diabetes.[1] The hyperglycemia and adverse pregnancy outcomes study (HAPO) demonstrated that the risk of adverse maternal,fetal,and neonatal outcomes continuously increase as a function of maternal glycemia at 24-28 weeks,even within ranges previously considered normal for pregnancy.[2] After reviewing the results of the HAPO study,many international diabetes study groups,including the International Association of Diabetes and Pregnancy Study Groups and ADA have adopted the 75 g oral glucose tolerance test (OGTT) at 24-28 weeks as a screening and diagnostic test and defined new cut-off values for GDM diagnosis.The Ministry of Health of China published the criteria for GDM,that is the same as the ADA criteria on July 1,2011.World Health Organization (WHO) has recommended the 75 g OGTT with different cut-offvalues as a diagnostic test since 1999,changed its recommendation on 2013.In Hongkong and Yunnan province in China,most hospital adopted the WHO 1999 criteria,nevertheless,there is no evidence of multicenter and large sample to show that the GDM population within the same ethnic group diagnosed by the new WHO criteria matches those diagnosed by the old one and consistency between the two criteria has not been reported.Thus,we conducted this study to analyze the two criteria in Chinese pregnant women. | Weiwei Zhu Huixia Yang Yumei Wei Zilian Wang Xuelan Li Hairong Wu Nan Li Meihua Zhang Xinghui Liu Hua Zhang Yunhui Wang Jianmin Niu Yujie Gan Liruo Zhong Yunfeng Wang Anil Kapur | 2015 | Chinese Medical Journal2015，，1： | 42 |
| 2 | Regional Differences of China′s Urban Expansion from Late 20th to Early 21st Century Based on Remote Sensing Information显示文摘This study investigated the regional differences of China′s urban land expansion from the late 1980s to the year of 2008, based on the spatio-temporal analysis of CLCD (China′s land cover/land use database) datasets which were mainly produced from remote sensing imagery data. A newly defined urbanization level index (UI), based on urban land area, is proposed to describe Chinese urban expansion process at 1 kilometer, provincial, regional, and na-tional scales, together with the absolute urban expansion index (UEa) and the relative urbanization expansion index (UEr). The results indicate that the percentages of total land area occupied by urban in the late 1980s, 1995, 2000, 2005, and 2008 were approximately 0.25%, 0.32%, 0.33%, 0.43% and 0.52% of China′s total land area, respectively. Between the late 1980s and 2008, the total urban expansion in the mainland of China was 2.645 × 104 km2, resulting in an annual urban expansion area of about 1322.7 km2/yr, with the UEr of 111.9%. This study also finds that there has been an obvious spatial gradient of urbanization ratio running from the east coast to the west inland, and the urbanization gaps among different regions have persisted over the past two decades. The study also reveals obvious temporal varia-tions of the urbanization rates. There was very little urban growth during the period of 1995-2000 due to the governmental policy factors. | LIU Jiyuan ZHANG Qian HU Yunfeng | 2012 | Chinese Geographical Science2012，22，1： | 35 |
| 3 | Terrestrial carbon sinks in China and around the world and their contribution to carbon neutrality显示文摘Enhancing the terrestrial ecosystem carbon sink(referred to as terrestrial C sink) is an important way to slow down the continuous increase in atmospheric carbon dioxide(CO_(2)) concentration and to achieve carbon neutrality target.To better understand the characteristics of terrestrial C sinks and their contribution to carbon neutrality,this review summarizes major progress in terrestrial C budget researches during the past decades,clarifies spatial patterns and drivers of terrestrial C sources and sinks in China and around the world,and examines the role of terrestrial C sinks in achieving carbon neutrality target.According to recent studies,the global terrestrial C sink has been increasing from a source of (-0.2±0.9) Pg C yr^(-1)(1 Pg=1015g)in the 1960s to a sink of (1.9±1.1) Pg C yr^(-1) in the 2010s.By synthesizing the published data,we estimate terrestrial C sink of 0.20–0.25 Pg C yr^(-1) in China during the past decades,and predict it to be 0.15–0.52 Pg C yr^(-1) by 2060.The terrestrial C sinks are mainly located in the mid-and high latitudes of the Northern Hemisphere,while tropical regions act as a weak C sink or source.The C balance differs much among ecosystem types:forest is the major C sink;shrubland,wetland and farmland soil act as C sinks;and whether the grassland functions as C sink or source remains unclear.Desert might be a C sink,but the magnitude and the associated mechanisms are still controversial.Elevated atmospheric CO_(2) concentration,nitrogen deposition,climate change,and land cover change are the main drivers of terrestrial C sinks,while other factors such as fires and aerosols would also affect ecosystem C balance.The driving factors of terrestrial C sink differ among regions.Elevated CO_(2) concentration and climate change are major drivers of the C sinks in North America and Europe,while afforestation and ecological restoration are additionally important forcing factors of terrestrial C sinks in China.For future studies,we recommend the necessity for intensive and long-term ecosystem C monitoring over broad geographic scale to improve terrestrial biosphere models for accurately evaluating terrestrial C budget and its dynamics under various climate change and policy scenarios. | Yuanhe Yang Yue Shi Wenjuan Sun Jinfeng Chang Jianxiao Zhu Leiyi Chen Xin Wang Yanpei Guo Hongtu Zhang Lingfei Yu Shuqing Zhao Kang Xu Jiangling Zhu Haihua Shen Yuanyuan Wang Yunfeng Peng Xia Zhao Xiangping Wang Huifeng Hu Shiping Chen Mei Huang Xuefa Wen Shaopeng Wang Biao Zhu Shuli Niu Zhiyao Tang Lingli Liu Jingyun Fang | 2022 | Science China(Life Sciences)2022，65，5： | 32 |
| 4 | Copper ions influence the toxicity of β-amyloid(1-42) in a concen-tration-dependent manner in a Caenorhabditis elegans model of Alzheimer’s disease显示文摘β-amyloid (Aβ) and copper play important roles in the pathogenesis of Alzheimer’s disease (AD).However,the behavioral correlativity and molecular mechanisms of Aβ and copper toxicity have been investigated less often.In the present study,we investigated the interaction and toxicity of Aβ1-42 and copper in the Aβ1-42 transgenic Caenorhabditis elegans worm model CL2006.Our data show that the paralysis behavior of CL2006 worms significantly deteriorated after exposure to 10-3 mol L-1 copper ions.However,the paralysis behavior was dramatically attenuated with exposure to 10-4 mol L-1 copper ions.The exogenous copper treatment also partially changed the homeostatic balance of zinc,manganese,and iron.Our data suggest that the accumulation of reactive oxygen species (ROS) was responsible for the paralysis induced by Aβ and copper in CL2006.The ROS generation induced by Aβ and copper appear to be through sod-1,prdx-2,skn-1,hsp-60 and hsp-16.2 genes. | LUO YunFeng ZHANG Jie LIU NianQing LUO Yuan ZHAO BaoLu | 2011 | Science China(Life Sciences)2011，54，6： | 26 |
| 5 | Epidemiological characteristics of thyroid nodules and risk factors for malignant nodules: a retrospective study from 6 304 surgical cases显示文摘 | Huan Qin Wang Kun Lou Fuchen Zhang Li Huang Qingxian Han Yunfeng Sun Hancheng Zhu Lei Lin Peng Song Jun Liu Fuqiang Wang Qian Hou Weikai | 2014 | Chinese Medical Journal2014，，12： | 20 |
| 6 | Estimation of wind erosion rates by using ^(137)Cs tracing technique:A case study in Tariat-Xilin Gol transect, Mongolian Plateau显示文摘Wind erosion is one of the major environmental problems in semi-arid and arid regions. Here we es- tablished the Tariat-Xilin Gol transect from northwest to southeast across the Mongolian Plateau, and selected seven sampling sites along the transect. We then estimated the soil wind erosion rates by using the ^(137)Cs tracing technique and examined their spatial dynamics. Our results showed that the ^(137)Cs inventories of sampling sites ranged from 265.63±44.91 to 1279.54±166.53 Bq·m^(-2), and the wind erosion rates varied from 64.58 to 419.63 t·km^(-2)·a^(-1) accordingly. In the Mongolia section of the transect (from Tariat to Sainshand), the wind erosion rate increased gradually with vegetation type and climatic regimes; the wind erosion process was controlled by physical factors such as annual precipitation and vegetation coverage, etc., and the impact of human activities was negligible. While in the China section of the transect (Inner Mongolia), the wind erosion rates of Xilin Hot and Zhengxiangbai Banner were thrice as much as those of Bayannur of Mongolia, although these three sites were all dominated by typical steppe. Besides the physical factors, higher population density and livestock carrying level should be responsible for the higher wind erosion rates in these two regions of Inner Mongolia. | LIU JiYuan SHI HuaDing QI YongQing ZHUANG DaFang HU YunFeng | 2008 | Chinese Science Bulletin2008，53，5： | 16 |
| 7 | Experimental demonstration of a new concept of drag reduction and thermal protection for hypersonic vehicles显示文摘A new idea of drag reduction and thermalprotection for hypersonic vehicles is proposed based on thecombination of a physical spike and lateral jets for shock-reconstruction. The spike recasts the bow shock in front ofa blunt body into a conical shock, and the lateral jets workto protect the spike tip from overheating and to push theconical shock away from the blunt body when a pitchingangle exists during flight. Experiments are conducted in ahypersonic wind tunnel at a nominal Mach number of 6. Itis demonstrated that the shock/shock interaction on the bluntbody is avoided due to injection and the peak pressure atthe reattachment point is reduced by 70% under a 4°attackangle. | Zonglin Jiang Yunfeng Liu Guilai Han Wei Zhao Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing, China | 2009 | Acta Mechanica Sinica2009，25，3： | 14 |
| 8 | 通信建设项目管理漫谈显示文摘本文简单阐述了工程管理的作用,介绍了建筑工程管理基本模式,结合通信建设项目的特点,提出对于通信工程管理的几点建议,仅供从事通信工程管理的同事参考和借鉴。 | 刘云凤 Liu Yunfeng | 2005 | 电信工程技术与标准化2005，18，2： | 14 |
| 9 | Parallel Reinforcement Learning-Based Energy Efficiency Improvement for a Cyber-Physical System显示文摘As a complex and critical cyber-physical system(CPS),the hybrid electric powertrain is significant to mitigate air pollution and improve fuel economy.Energy management strategy(EMS)is playing a key role to improve the energy efficiency of this CPS.This paper presents a novel bidirectional long shortterm memory(LSTM)network based parallel reinforcement learning(PRL)approach to construct EMS for a hybrid tracked vehicle(HTV).This method contains two levels.The high-level establishes a parallel system first,which includes a real powertrain system and an artificial system.Then,the synthesized data from this parallel system is trained by a bidirectional LSTM network.The lower-level determines the optimal EMS using the trained action state function in the model-free reinforcement learning(RL)framework.PRL is a fully data-driven and learning-enabled approach that does not depend on any prediction and predefined rules.Finally,real vehicle testing is implemented and relevant experiment data is collected and calibrated.Experimental results validate that the proposed EMS can achieve considerable energy efficiency improvement by comparing with the conventional RL approach and deep RL. | Teng Liu Bin Tian Yunfeng Ai Fei-Yue Wang | 2020 | IEEE/CAA Journal of Automatica Sinica2020，7，2： | 14 |
| 10 | Earthquake prediction from China's mobile gravity data显示文摘The relation between plate tectonics and earthquake evolution is analyzed systematically on the basis of 1998e2010 absolute and relative gravity data from the Crustal Movement Observation Network of China. Most earthquakes originated in the plate boundary or within the fault zone. Tectonic deformation was most intense and exhibited discontinuity within the tectonically active fault zone because of the differential movement; the stress accumulation produced an abrupt gravity change, which was further enhanced by the earthquake. The gravity data from China's Mainland since 2000 obviously reflected five major earthquakes(Ms > 7), all of which were better reflected than before 2000. Regional gravity anomalies and a gravity gradient change were observed in the area around the epicenter about 2 or 3 years before the earthquake occurred, suggesting that gravity change may be a seismic precursor. Furthermore, in this study, the medium-term predictions of the Ms7.3 Yutian, Ms8.0 Wenchuan, and Ms7.0 Lushan earthquakes are analytically presented and evaluated, especially to estimate location of earthquake. | Zhu Yiqing Liu Fang You Xinzhao Liang Weifeng Zhao Yunfeng Liu Lian | 2015 | Geodesy and Geodynamics2015，6，2： | 13 |
| 11 | Phosphorylcholine polymer nanocapsules prolong the circulation time and reduce the immunogenicity of therapeutic proteins显示文摘蛋白质治疗,治疗学的蛋白质在那里被交付对待混乱,为治疗疾病被认为最安全、很直接的途径。然而,它的应用被有效策略的少量高度为在他们的管理以后在 vivo 交付蛋白质和治疗学的蛋白质的快速的清理限制。这里,我们表明能显著地延长治疗学的蛋白质的发行量时间以及最小化他们的 immunogenicity 的新奇策略。这被与抵抗蛋白质吸附的 crosslinked phosphorylcholine 聚合物的薄层包含单个蛋白质分子完成。通过广泛的细胞的研究,我们证明 crosslinked phosphorylcholine 聚合物壳有效地阻止包含的蛋白质是由巨噬细胞的 phagocytosed,它在 vivo 在 nanoparticles 的清理起一个必要作用。而且,聚合物壳阻止包含的蛋白质被有免疫力的房间识别。作为结果,对治疗学的蛋白质的有免疫力的回答有效地被压制。这个工作描述一个可行方法延长循环时间并且减少治疗学的蛋白质的 immunogenicity,它可以在多样的疾病的治疗支持新奇蛋白质治疗的发展和申请。 | Sheng Liang Yang Liu Xin Jin Gan Liu Jing Wen Linlin Zhang Jie Li Xubo Yuan Irvin S.Y. Chen Wei Chen Hui Wang Linqi Shi Xinyuan Zhu Yunfeng Lu | 2016 | Nano Research2016，9，4： | 11 |
| 12 | Seafloor geodetic network establishment and key technologies显示文摘Seafloor geodetic network construction involves the development of geodetic station shelter, network configuration design, location selection and layout, surveying strategy, observation model establishment and optimization, data processing strategy and so on. This paper tries to present main technological problems involved in the seafloor geodetic network construction, and seek the technically feasible solutions. Basic conceptions of developing seafloor geodetic station shelters for shallow sea and deep-sea are described respectively. The overall criteria of seafloor geodetic network construction for submarine navigation and those of network design for crustal motion monitoring are both proposed. In order to enhance application performances of the seafloor geodetic network, the seafloor network configuration should prefer a symmetrical network structure. The sea surface tracking line measurements for determining the seafloor geodetic station position should also adopt an approximately symmetrical configuration, and we recommend circle tracking line observations combined with cross-shaped line(or double cross-shape line) observations for the seafloor positioning mode. As to the offset correction between the Global Navigation Satellite System antenna phase center and the acoustic transducer, it is recommended to combine the calibration through external measurements and model parameter estimation. Besides, it is suggested to correct the sound speed error with a combination of observation value correction and parameterized model correction, and to mainly use the model correction to reduce the influence of acoustic ray error on the seafloor positioning. Following the proposed basic designs, experiments are performed in shallow sea area and deep-sea area respectively. Based on the developed seafloor geodetic shelter and sufficient verification in the shallow sea experiment, a long-term seafloor geodetic station in the deep-sea area of 3000 m depth was established for the first time, and the preliminary positioning result shows that the internal precision of this station is better than 5 cm. | Yuanxi YANG Yanxiong LIU Dajun SUN Tianhe XU Shuqiang XUE Yunfeng HAN Anmin ZENG | 2020 | Science China Earth Sciences2020，63，8： | 11 |
| 13 | Lumbar spine superior-level facet joint violations: percutaneous versus open pedicle screw insertion using intraoperative 3-dimensional computer-assisted navigation显示文摘 | Tian Wei Xu Yunfeng Liu Bo Liu Yajun He Da Yuan Qiang Lang Zhao Lyu Yanwei Han Xiaoguang Jin Peihao | 2014 | Chinese Medical Journal2014，，22： | 10 |
| 14 | Criteria for hypersonic airbreathing propulsion and its experimental verification显示文摘Hypersonic airbreathing propulsion is one of the top techniques for future aerospace flight, but there are still no practical engines after seventy years’ development. Two critical issues are identified to be the barriers for the ramjet-based engine that has been taken as the most potential concept of the hypersonic propulsion for decades. One issue is the upstream-traveling shock wave that develops from spontaneous waves resulting from continuous heat releases in combustors and can induce unsteady combustion that may lead to engine surging during scramjet engine operation.The other is the scramjet combustion mode that cannot satisfy thrust needs of hypersonic vehicles since its thermos-efficiency decreases as the flight Mach number increases. The two criteria are proposed for the ramjet-based hypersonic propulsion to identify combustion modes and avoid thermal choking. A standing oblique detonation ramjet(Sodramjet) engine concept is proposed based on the criteria by replacing diffusive combustion with an oblique detonation that is a unique pressure-gain phenomenon in nature. The Sodramjet engine model is developed with several flow control techniques, and tested successfully with the hypersonic flight-duplicated shock tunnel.The experimental data show that the Sodramjet engine model works steadily, and an oblique detonation can be made stationary in the engine combustor and is controllable. This research demonstrates the Sodramjet engine is a promising concept and can be operated stably with high thermal efficiency at hypersonic flow conditions. | Zonglin JIANG Zijian ZHANG Yunfeng LIU Chun WANG Changtong LUO | 2021 | Chinese Journal of Aeronautics2021，34，3： | 9 |
| 15 | Modeling the radiation balance of different urban underlying surfaces显示文摘An urban net all-wave radiation parameterization scheme is evaluated using annual datasets for 2010 recorded at a Beijing urban observation site.The statistical relationship between observed data and simulation data of net radiation has a correlation coefficient of 0.98 and model efficiency of 0.93.Therefore,it can be used to simulate the radiation balance of Beijing.This study analyzes the variation in the radiation balance for different underlying surfaces.To simulate radiation balance differences,we set four pure land-cover types(forest,grass,roads,and buildings).Keeping all other conditions inputted unchanged,we model the radiation balance by changing the land-cover type.The results show that the effects of different underlying surfaces on radiation differ,and that there is much upward long-wave radiation,accounting for 84.3% of the total radiation energy falling incident on the land surface.The annual averages of net radiation for the four land-cover types are in the range of 38.2-53.4 W/m2.The net radiation of the grass surface is minimal while that of the roads surface is maximal.Additionally,with urbanization the net radiation values of common types of land-cover change,such as conversion from forest to roads,grass to roads,and grass to buildings,all have increasing trends,indicating that net radiation usually increases with urban sprawl. | CUI YaoPing LIU JiYuan HU YunFeng WANG JunBang KUANG WenHui | 2012 | Chinese Science Bulletin2012，57，9： | 9 |
| 16 | Parallel Reinforcement Learning:A Framework and Case Study显示文摘In this paper, a new machine learning framework is developed for complex system control, called parallel reinforcement learning. To overcome data deficiency of current data-driven algorithms, a parallel system is built to improve complex learning system by self-guidance. Based on the Markov chain(MC) theory, we combine the transfer learning, predictive learning, deep learning and reinforcement learning to tackle the data and action processes and to express the knowledge. Parallel reinforcement learning framework is formulated and several case studies for real-world problems are finally introduced. | Teng Liu Bin Tian Yunfeng Ai Li Li Dongpu Cao Fei-Yue Wang | 2018 | IEEE/CAA Journal of Automatica Sinica2018，5，4： | 8 |
| 17 | Using ^(137)Cs tracing technique to estimate wind erosion rates in the typical steppe region, northern Mongolian Plateau显示文摘Wind erosion is one of the major factors of land degradation in the typical steppe region, northern Mongolian Plateau. Using 137Cs tracing technique, we estimated the wind erosion rates of different pastures and abandoned farmland at Bayannur and Karakorum in Mongolia. The pastures and cutting grassland at Bayannur were slightly eroded by wind, with the rates of 64.58-169.07 t·km?2·a?1. The abandoned farmland in Karakorum, however, was strongly eroded by wind, with annual surface soil loss of 4.05 mm·a?1, and wind erosion rates up to 6723.06 t·km?2·a?1. The total loss of surface soil due to wind erosion has been 17.4 cm since the cultivation of the steppe land in the 1960s. The wind ero- sion rate at the abandoned farmland was much higher than that at the typical steppe sites, showing that the cultivation led to serious wind erosion in the typical steppe region, northern Mongolian Plateau. By contrast, traditional livestock grazing resulted in less disturbance to the surface soil, and did not in- duce to devastating wind erosion, which plays an important role in maintaining the stability of the steppe ecosystem in the northern Mongolian Plateau. | QI YongQing LIU JiYuan SHI HuaDing HU YunFeng ZHUANG DaFang | 2008 | Chinese Science Bulletin2008，53，9： | 8 |
| 18 | Novel Recombinant Seneca Valley Virus Isolated from Slaughtered Pigs in Guangdong Province显示文摘Dear Editor,Since the first outbreak in Brazil in 2015,Seneca Valley virus(SVV)associated with porcine idiopathic vesicular disease,has shown increasing geographic distribution.Cases of SVV have been reported from several countries including the United States(US),Colombia,Thailand,Canada,and China(Pasma et al.2008;Zhang et al.2015;Sun et al.2017;Wu et al.2017;Liu et al.2018;Saeng-Chuto et al.2018).SVV was first identified in the US in 2002 and is the only member of the genus Senecavirus in the family Picomaviridae(Hales et al.2008;Leme et al.2017).The SVV genome contains a large open reading frame(ORF)encoding a polyprotein,which is cleaved into various mature viral proteins including the leader protein(L),structural proteins(VP1,VP2,VP3,and VP4),and non-structural proteins(2A,2B,2C,3A,3B,3C,and 3D)(Hales et al 2008).Structural proteins bind to their receptor,anthrax toxin receptor 1,to mediate viral invasion and stimulate specific immunity of the host(Jayawardena et al.2018).Non-structural proteins such as 3C suppress innate immune responses by degrading interferon regulatory factor 3(IRF 3)and IRF7 and inhibit the activation of RIG-1,TBK1,and TRAF3 through deubiquitination(Xue et al 2018). | Jianxin Liu Yunfeng Zha Huizi Li Yanwei Sun Fuguang Wang Rong Lu Zhangyong Ning | 2019 | Virologica Sinica2019，34，6： | 7 |
| 19 | Structural and functional properties of hydrolyzed/glycosylated ovalbumin under spray drying and microwave freeze drying显示文摘Ovalbumin(OVA),the main protein in egg white,affects most of the functional properties of egg white protein in food processing.The aim of this study was to investigate the effects of spray drying(SD)and microwave freeze drying(MFD)on the preparation of hydrolyzed/glycosylated ovalbumin(HGOVA)and provide useful information on the applications of egg protein powders in the food industry.Results demonstrated that the structure of HGOVA was considerably changed,and its functional properties were improved compared with those of native OVA.SD and MFD processing did not lead to dissociation of HGOVA subunits.SD-HGOVA exhibited higher protein solubility,emulsifying activity,foaming capacities,and gel hardness than MFD-HGOVA.However,MFD-HGOVA was better than the SD-HGOVA in terms of color,emulsion stability,foam stability,water/oil absorption capacity,and thermal stability.Selection of an appropriate drying method could enhance the potential applications of HGOVA in the food industry. | Lili Liu Xiaoning Dai Huaibin Kang Yunfeng Xu Weiming Hao | 2020 | Food Science and Human Wellness2020，9，1： | 7 |
| 20 | Gravity changes before and after the 2010 Ms7.1 Yushu earthquake显示文摘Absolute and relative gravity observations from 1998-2010 from the China Crustal Movement Observation Network, a major national scientific project, have been used to model the gravity field and its variations associated with the April 14, 2010 Ms7.1 Yushu earthquake. The evolution of the regional gravity field and its relationship with seismicity before and after the Yushu earthquake are studied. The observed gravity changes are closely related to the active Ganzi-Yushu Fault, and gravity measurements can be used to observe the migration of material accompanying active faults and crustal tectonics. The dynamic variation of the gravity field reflects its evolution prior to and during the Yushu earthquake. The gravity measurements near its epicenter are as large as 80×10^(-8) m/s^2, and they show wave-like increases with time prior to the Yushu earthquake. | Zhu Yiqing Liu fang Cao Jianping Zhao Yunfeng | 2012 | Geodesy and Geodynamics2012，3，4： | 7 |
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