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| 1 | Precise orbit determination of Beidou Satellites with precise positioning显示文摘Chinese Beidou satellite navigation system constellation currently consists of eight Beidou satellites and can provide preliminary service of navigation and positioning in the Asia-Pacific Region.Based on the self-developed software Position And Navigation Data Analysis(PANDA) and Beidou Experimental Tracking Stations (BETS),which are built by Wuhan University,the study of Beidou precise orbit determination,static precise point positioning (PPP),and high precision relative positioning,and differential positioning are carried out comprehensively.Results show that the radial precision of the Beidou satellite orbit determination is better than 10 centimeters.The RMS of static PPP can reach several centimeters to even millimeters for baseline relative positioning.The precision of kinematic pseudo-range differential positioning and RTK mode positioning are 2-4 m and 5-10 cm respectively,which are close to the level of GPS precise positioning.Research in this paper verifies that,with support of ground reference station network,Beidou satellite navigation system can provide precise positioning from several decimeters to meters in the wide area and several centimeters in the regional area.These promising results would be helpful for the implementation and applications of Beidou satellite navigation system. | SHI Chuang ZHAO QiLe LI Min TANG WeiMing HU ZhiGang LOU YiDong ZHANG HongPing NIU XiaoJi LIU JingNan | 2012 | Science China Earth Sciences2012，55，7： | 61 |
| 2 | Predicting the growth performance of growing-finishing pigs based on net energy and digestible lysine intake using multiple regression and artificial neural networks models显示文摘Backgrounds:Evaluating the growth performance of pigs in real-time is laborious and expensive,thus mathematical models based on easily accessible variables are developed.Multiple regression(MR)is the most widely used tool to build prediction models in swine nutrition,while the artificial neural networks(ANN)model is reported to be more accurate than MR model in prediction performance.Therefore,the potential of ANN models in predicting the growth performance of pigs was evaluated and compared with MR models in this study.Results:Body weight(BW),net energy(NE)intake,standardized ileal digestible lysine(SID Lys)intake,and their quadratic terms were selected as input variables to predict ADG and F/G among 10 candidate variables.In the training phase,MR models showed high accuracy in both ADG and F/G prediction(R^(2)_(ADG)=0.929,R^(2)_(F/G)=0.886)while ANN models with 4,6 neurons and radial basis activation function yielded the best performance in ADG and F/G prediction(R^(2)_(ADG)=0.964,R^(2)_(F/G)=0.932).In the testing phase,these ANN models showed better accuracy in ADG prediction(CCC:0.976 vs.0.861,R^(2):0.951 vs.0.584),and F/G prediction(CCC:0.952 vs.0.900,R^(2):0.905 vs.0.821)compared with the MR models.Meanwhile,the“over-fitting”occurred in MR models but not in ANN models.On validation data from the animal trial,ANN models exhibited superiority over MR models in both ADG and F/G prediction(P<0.01).Moreover,the growth stages have a significant effect on the prediction accuracy of the models.Conclusion:Body weight,NE intake and SID Lys intake can be used as input variables to predict the growth performance of growing-finishing pigs,with trained ANN models are more flexible and accurate than MR models.Therefore,it is promising to use ANN models in related swine nutrition studies in the future. | Li Wang Qile Hu Lu Wang Huangwei Shi Changhua Lai Shuai Zhang | 2022 | Journal of Animal Science and Biotechnology2022，13，6： | 5 |
| 3 | Enhanced grain refinement of Al-Si alloys by novel Al-V-B refiners显示文摘Al-V-B master alloy is promising for refining Al-Si alloys,yet its optimal composition with superior efficacy remains to be explored.In this work,the evolution of refining phases in the Al-10 Si/Al-V-B system with different V:B ratios was evaluated by thermodynamic calculations,based on which the Al-V-B refiners with V:B=1:1 and 5:1 were designed.Refining trails demonstrated that they could significantly reduce the grain size of Al-10 Si(wt.%)alloy from 1736 to 184-245μm with industrial addition amount.Detailed examinations results clarify that when V:B ratio is 1:1 the nucleation particle is(V,Al)B_(2),which has a VB_(2)-AlB_(2) core-shell structure and therefore presents the nucleation capability as AlB_(2) particle.When V:B ratio is as high as 5:1,the nucleation particle is pure VB_(2).Density functional theory(DFT)calculation indicates that(0001)VB_(2)/(111)α-Al interface has the lowest interfacial energy such that highest nucleation potency among other types of diboride/α-Al interfaces under consideration.The outcomes of this work provide fundamental guidance to develop superior V-B based refiners for Al-Si alloys. | Chenxi Zhao Yang Li Jin Xu Qun Luo Ying Jiang Qiling Xiao Qian Li | 2021 | Journal of Materials Science & Technology2021，，35： | 4 |
| 4 | Precise orbit determination for BDS satellites显示文摘Since the frst pair of BeiDou satellites was deployed in 2000,China has made continuous eforts to establish its own independent BeiDou Navigation Satellite System(BDS)to provide the regional radio determination satellite service as well as regional and global radio navigation satellite services,which rely on the high quality of orbit and clock products.This article summarizes the achievements in the precise orbit determination(POD)of BDS satellites in the past decade with the focus on observation and orbit dynamic models.First,the disclosed metadata of BDS satellites is presented and the contribution to BDS POD is addressed.The complete optical properties of the satellite bus as well as solar panels are derived based on the absorbed parameters as well the material properties.Secondly,the status and tracking capabilities of the L-band data from accessible ground networks are presented,while some low earth orbiter satellites with onboard BDS tracking capability are listed.The topological structure and measurement scheme of BDS Inter-Satellite-Link(ISL)data are described.After highlighting the progress on observation models as well as orbit perturbations for BDS,e.g.,phase center corrections,satellite attitude,and solar radiation pressure,diferent POD strategies used for BDS are summarized.In addition,the urgent requirement for error modeling of the ISL data is emphasized based on the analysis of the observation noises,and the incompatible characteristics of orbit and clock derived with L-band and ISL data are illuminated and discussed.The further researches on the improvement of phase center calibration and orbit dynamic models,the refnement of ISL observation models,and the potential contribution of BDS to the estimation of geodetic parameters based on L-band or ISL data are identifed.With this,it is promising that BDS can achieve better performance and provides vital contributions to the geodesy and navigation. | Qile Zhao Jing Guo Chen Wang Yifei Lyu Xiaolong Xu Chao Yang Junqiang Li | 2022 | Satellite Navigation2022，3，1： | 4 |
| 5 | Precise Relative Orbit Determination of Twin GRACE Satellites显示文摘当形成飞时,太空船被用作站台获得土面向的观察,在这些太空船之间的精确基线总是是必要的。严肃恢复和气候实验(优雅) 使命针对印射全球严肃地和它的变化。优雅卫星的精确基线为当模特儿的严肃地是必要的。成双的卫星的运动学、减少的动态相对轨道的决心为动态相对轨道在 2 公里的这份报纸,和精确性被学习了,为运动学的 5 公里能被获得,大多数在 GPS 歧义上的双差别由此被解决。 | ZHAO Qile HU Zhigang GUO Jing LI Min GE Maorong | 2010 | Geo-Spatial Information Science2010，13，3： | 3 |
| 6 | Improved mean shift algorithm for occlusion pedestrian tracking显示文摘 | Li Zheng Tang Qiling Sang Nong | 2008 | Electronics Letters2008，44，10： | 1 |
| 7 | Initial results of precise orbit and clock determination for COMPASS navigation satellite system显示文摘 | ZHAO Qile GUO Jing LI Min | 2013 | Journal of Geodesy2013，87，5： | 1 |
| 8 | Biological Functions of Selenoprotein Iodothyronine Deiodinase and its Expression in Osteoarthritis显示文摘Objective Iodothyronine deiodinases(DIOs)are important selenoproteins that play a key role in the bone and joint diseases.Osteoarthritis(OA)is the most prevalent joint disease especially in elders.This bioinformatic analysis was performed to explore the role of DIOs in OA pathogenesis.Methods The biological functions of selenoprotein DIOs were analyzed by bioinformatic techniques,mcluding GenCLip 3.0,Database for Annotation,Visualization and Integrated Discovery(DAVID),STRING,Cytoscape,and Network Analyst.The expression of DIOs in the healthy individuals and OA patients was determined by mining OA-related microarray data in the gene expression omnibus(GEO)database of National Center for Biotechnology Information and performing a Meta-analysis of the data with Review Manager 5.3.Results Cluster analysis revealed that the function of the DIOs was associated with thyroid hormone receptor and iodothyronine;GO analysis showed that DIOs were mainly involved in biological processes,such as ethanol metabolism and phenol-containing compound metabolism and primarily involved in the cytochrome P450 metabolism of exogenous organisms and thyroid hormone signaling;SULT1A1 was the core node of the PPI network;miRNAs and thyroid hormones had some iterations with DIO1 and DI02;Meta-analysis showed that DIO3 expression was significantly up-regulated in OA patients(SMD=0.31,95%CI:0.03,0.59,P=0.03).Conclusions The main biological functions of DIOs were closely associated with the regulation of thyroid hormone.And the up-regulated expression of DIO3 may have crucial impact on the occurrence of OA. | Xiaomei Ren Li Zhang Bao Xin Qiling Liu Wenwen Qian Rongqiang Zhang | 2022 | Chinese Medical Sciences Journal2022，37，2： | 1 |
| 9 | d(GC)n repeats form Z-DNA within promoter region and repress the promoter activity in Escherichia coil显示文摘 | Shenghe Huang Chuxin Wu Dongming Li Haizhou Wang Zechang Rao Qiling Shen Chunxiang Chen Yong Liu Xun Xu Chengyu Hu | 2015 | Acta Biochimica et Biophysica Sinica2015，47，7： | 1 |
| 10 | Initial Results of Precise Orbit and Clock Determination for COMPASS Navigation Satellite System显示文摘 | ZHAO Qile GUO Jing LI Min | 2013 | Journal of Geodesy2013，87，5： | 1 |
| 11 | The Progress of IGS Analysis Center at Wuhan University显示文摘As one of the Analysis Centers(AC)of the International GNSS Service(IGS),Wuhan University(WHU)has been contributing to the IGS by providing ultra-rapid as well as rapid orbit and clock solutions for the established GPS and GLONASS since 2012.In the same year,the IGS initiated the Multi-GNSS Experiment(MGEX)to support the analysis of the emerging GNSS systems and prepare the IGS for Multi-GNSS,which includes GPS,GLONASS,the European Galileo system,the Chinese Beidou Navigation Satellite System(BDS),the Japanese Quasi-Zenith Satellite System(QZSS)and the Indian Regional Navigation Satellite System(IRNSS/NaVIC).The major products,i.e.,orbits,Earth Orientation Parameters(EOPs),satellite clock as well as attitude have also been provided by WHU since 2012.More recently,WHU has engaged the third reprocessing of IGS for generating the highly accurate station coordinates as inputs for establishment of the International Terrestrial Reference Frame(ITRF)2020 during 2019—2020.This article presents the recent major advancements of the IGS AC at Wuhan University,including precise products,real-time products,bias products,antenna phase center calibration,and the non-linear motion modeling for GNSS Reference Stations. | Weiping JIANG Qile ZHAO Min LI Jing GUO Jianghui GENG Zhao LI Shengfeng GU Qiang ZHANG Zhigang HU Na WEI | 2023 | Journal of Geodesy and Geoinformation Science2023，6，3： | 1 |
| 12 | Design of a novel mitochondria targetable turn-on fluorescence probe for hydrogen peroxide and its two-photon bioimaging applications显示文摘Considering that hydrogen peroxide(H2O2)plays significant roles in oxidative stress,the cellular signal transduction and essential biological process regulation,the detection and imaging of H2O2 in living systems undertakes critical responsibility.Herein,we have developed a novel two-photon fluorescence turn on probe,named as Pyp-B for mitochondria H2O2 detection in living systems.Selectivity studies show that probe Pyp-B exhibit highly sensitive response toward H2O2 than other reactive oxygen species(ROS)and reactive nitrogen species(RNS)as well as biologically relevant species.The fluorescence colocalization studies demonstrate that the probe can localize in the mitochondria solely.Furthermore,as a bio-compatibility molecule,the highly selective and sensitive of fluorescence probe Pyp-B have been confirmed by its cell imaging application of H2O2 in living A549 cells and zebrafishes under the physiological conditions. | Kangnan Wang Wen Ma Yuchun Xu Xin Liu Gui Chen Meng Yu Qiling Pan Chaobo Huang Xiaochuan Li Qingchun Mu Yongbing Sun Zhiqiang Yu | 2020 | Chinese Chemical Letters2020，31，12： | 1 |
| 13 | Initial Results of Precise Orbit and Clock Determination for COMPASS Navigation Satellite System显示文摘 | Zhao Qile Guo Jing Li Min | 2013 | GPS Solut2013，87，5： | 1 |
| 14 | Initial results of precise orbit and clock determination for COMPASS navigation satellite system显示文摘 | Qile Zhao Jing Guo Min Li Lizhong Qu Zhigang Hu Chuang Shi Jingnan Liu | 2013 | Journal of Geodesy2013，，5： | 1 |
| 15 | Population and housing grid spatialization in Yunnan Province based on grid sampling and application of rapid earthquake loss assessment:the Jinggu Ms6. 6 earthquake显示文摘Population and housing grid data spatialization based on 340 grid samples( 1 km × 1 km) is used instead of regional statistical data to simulate the population and housing distribution data of Yunnan Province( 1 km × 1 km) for rapid loss assessment for the Jinggu Ms6. 6 earthquake. The results indicate that the method reflects the actual population and housing distribution and that the assessment results are credible. The method can be used to quickly provide spatial orientation disaster information after an earthquake. | Ding Wenxiu Li Xiaoli Li Zhiqiang Dou aixia Zhang Yimei Temu Qile | 2014 | Geodesy and Geodynamics2014，5，4： | 1 |
| 16 | Precise point positioning with the BeiDou navigation satellite system显示文摘 | LI Min QU Lizhong ZHAO Qile | 2014 | Sensors2014，14，： | 1 |
| 17 | Real-time high-precision earthquake monitoring using single-frequency GPS receivers显示文摘 | Min Li Wenwen Li Rongxin Fang Chuang Shi Qile Zhao | 2015 | GPS Solutions2015，，1： | 1 |
| 18 | Enhancer of zeste homolog 2 expression is associated with tumor cell proliferation and invasion in cervical cancer显示文摘 | Jing Fang Mingxin Zhang Qiling Li | 2011 | Am J Med Sci2011，342，3： | 1 |
| 19 | Geometrical Design and Hydraulic Feasibility of Inner-Reinforced Girders in Hydropower Bifurcations显示文摘Inner-reinforced girders, also known as ribs, are widely used in hydropower bifurcations. However, while they strengthen structures, they also cause energy loss. This work aims to develop an appropriate geometry form for ribs that can diminish head loss in hydropower bifurcations. The term rib/breadth ratio(RBR) is defined to describe the geometrical form of ribs. An investigation is conducted to study the flow and performance characteristics of bifurcations with ribs using computational fluid dynamics. The dependence of the head loss coefficient on the RBR is given in six working conditions. Results show that the ribs change the local flow patterns and slightly increase the water head loss in some cases. In other cases,however, the ribs make the flow smooth. An appropriate RBR is the key to improve the flow patterns in hydropower bifurcations. The head loss varies with the RBR and reaches the minimum when the RBR is 0.3. | Zhimin Zhang Hegao Wu Yang Wang Qiling Zhang Teng Li | 2017 | Transactions of Tianjin University2017，23，5： | 0 |
| 20 | Statistical Learning for Semantic Parsing: A Survey显示文摘A long-term goal of Artificial Intelligence(AI) is to provide machines with the capability of understanding natural language. Understanding natural language may be referred as the system must produce a correct response to the received input order. This response can be a robot move, an answer to a question, etc. One way to achieve this goal is semantic parsing. It parses utterances into semantic representations called logical form, a representation of many important linguistic phenomena that can be understood by machines. Semantic parsing is a fundamental problem in natural language understanding area. In recent years, researchers have made tremendous progress in this field. In this paper, we review recent algorithms for semantic parsing including both conventional machine learning approaches and deep learning approaches. We first give an overview of a semantic parsing system, then we summary a general way to do semantic parsing in statistical learning. With the rise of deep learning, we will pay more attention on the deep learning based semantic parsing, especially for the application of Knowledge Base Question Answering(KBQA). At last, we survey several benchmarks for KBQA. | Qile Zhu Xiyao Ma Xiaolin Li | 2019 | Big Data Mining and Analytics2019，2，4： | 0 |
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