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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 | Precise relative positioning using real tracking data from COMPASS GEO and IGSO satellites显示文摘 | Chuang Shi Qile Zhao Zhigang Hu Jingnan Liu | 2013 | GPS Solutions2013，，1： | 2 |
| 4 | Precise relative positioning using real tracking data from COMPASS GEO and IGSO satellites显示文摘 | Chuang Shi Qile Zhao Zhigang Hu Jingnan Liu | 2013 | GPS Solutions2013，，1： | 2 |
| 5 | Precise relative positioning using real tracking data from COMPASS GEO and IGSO satellites显示文摘 | Chuang Shi Qile Zhao Zhigang Hu Jingnan Liu | 2013 | GPS Solutions2013，，1： | 1 |
| 6 | Determination of jumps in terms of spectral data显示文摘 | Qiling Shi Xianliang Shi | 2006 | Acta Mathematica Hungarica2006，，3： | 1 |
| 7 | Precise Relative Positioning Using Real Tracking Data from COMPASS GEO and IGSO Satellites显示文摘 | SHI Chuang ZHAO Qile HU Zhigang | 2013 | GPS Solutions2013，17，1： | 1 |
| 8 | Precise Relative Posi- tioning Using Real Tracking Data from COMPASS GEO and IGSO Satellites显示文摘 | SHI Chuang ZHAO Qile HU Zhigang etal | 2013 | GPS Solutions2013，17，1： | 1 |
| 9 | Precise Relative Positioning Using Real Tracking Data from COMPASS GEO and IGSO Satellites显示文摘 | Shi Chuang Zhao Qile Hu Zhigang | 2013 | GPS Solut2013，17，1： | 1 |
| 10 | 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 |
| 11 | Precise relative positioning using real tracking data from COMPASS GEO and IGSO satellites 显示文摘 | Shi Chuang Zhao Qile Hu Zhigang | 2013 | GPS Solutions2013，17，1： | 1 |
| 12 | Precise relative positioning using real tracking data from COMPASS GEO and IGSO satellites 显示文摘 | Shi Chuang Zhao Qile Hu Zhigang | 2013 | GPS Solutions2013，17，1： | 1 |
| 13 | 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 |
| 14 | Leaf phenology rather than mycorrhizal type regulates soil nematode abundance,but collectively affects nematode diversity in seven common subtropical tree species显示文摘The underlying mechanisms of the relationships between tree species and the soil micro-food web in forest ecosystems remain uncertain,primarily ascribed to an insufficient understanding on how tree functional traits drive soil nematode communities,including in subtropical forests.We investigated the impacts of seven subtropical tree species(evergreen:Pinus massoniana,Mytilaria laosensis,Ilex chinensis,Michelia macclurei;and deciduous:Liquidambar formosana,Quercus acutissima,and Betula luminifera)on the soil nematode communities.We found that the abundance of soil nematodes was not affected by mycorrhizal types,but it was around 83%higher under the deciduous trees than the evergreen trees,indicating the importance of leaf phenology to the abundance of soil nematodes.Nonetheless,both the evergreen and the arbuscular mycorrhizal trees increased soil nematode diversity,resulting from changes in root traits and soil properties.Furthermore,root traits(root C,root N,and root C:N ratio),and soil properties(total C,total N,moisture content,and bulk density)were the best predictors of the community composition of soil nematodes,indicating a key role of resource quality and soil microhabitat in regulating soil nematodes.In contrast,the ectomycorrhizal trees had lower plant parasite and Wasilewska indices,and evenness,whereas the evergreen trees slightly improved the evenness of soil nematodes.This study suggests that tree species affect the soil food web through changes in soil conditions and plant functional traits in subtropical forests. | Jianqing Wang Jiaoyan Mao Yunyan Tan Shu Kee Lam Qiling Guo Xiuzhen Shi | 2023 | Forest Ecosystems2023，10，2： | 0 |
| 15 | Synergistic effects of carbon cycle metabolism and photosynthesis in Chinese cabbage under salt stress显示文摘Chinese cabbage(Brassica rapa ssp. pekinensis) has a long cultivation history and is one of the vegetable crops with the largest cultivation area in China. However, salt stress severely damages photosynthesis and hormone metabolism, nutritional balances, and results in ion toxicity in plants. To better understand the mechanisms of salt-induced growth inhibition in Chinese cabbage, RNA-seq and physiological index determination were conducted to explore the impacts of salt stress on carbon cycle metabolism and photosynthesis in Chinese cabbage. Here, we found that the number of thylakoids and grana lamellae and the content of starch granules and chlorophyll in the leaves of Chinese cabbage under salt stress showed a time-dependent response, first increasing and then decreasing. Chinese cabbage increased the transcript levels of genes related to the photosynthetic apparatus and carbon metabolism under salt stress, probably in an attempt to alleviate damage to the photosynthetic system and enhance CO_(2) fixation and energy metabolism. The transcription of genes related to starch and sucrose synthesis and degradation were also enhanced;this might have been an attempt to maintain intracellular osmotic pressure by increasing soluble sugar concentrations. Soluble sugars could also be used as potential reactive oxygen species(ROS) scavengers, in concert with peroxidase(POD)enzymes, to eliminate ROS that accumulate during metabolic processes. Our study characterizes the synergistic response network of carbon metabolism and photosynthesis under salt stress. | Hao Liang Qiling Shi Xing Li Peipei Gao Daling Feng Xiaomeng Zhang Yin Lu Jingsen Yan Shuxing Shen Jianjun Zhao Wei Ma | 2024 | Horticultural Plant Journal2024，10，2： | 0 |
| 16 | Design and experimental verification of a monolithic complete-light modulator based on birefringent materials显示文摘This paper presents a method to design a monolithic complete-light modulator(MCLM) that fully controls the amplitude, phase, and polarization of incident light. The MCLM is made of birefringent materials that provide different refractive indices to orthogonal eigen-polarizations, the ordinary o and extraordinary e states. We propose an optimization method to calculate the two relief depth distributions for the two eigen-polarizations. Also, a merging algorithm is proposed to combine the two relief depth distributions into one. The corresponding simulations were carried out in this work and the desired light distribution, including information on amplitude,phase, and four polarization states, was obtained when a laser beam passed through a 16-depth-level microstructure whose feature size is 8 μm. The structure was fabricated by common photolithography. An experimental optical system was also set up to test the optical effects and performances of the MCLM. The experimental performance of the MCLM agrees with the simulation results, which verifies the validity of the algorithms we propose in this paper. | YINGFEI PANG AXIU CAO JIAZHOU WANG HUI PANG WEI YAN XIANGDONG WU LIFANG SHI QILING DENG | 2019 | Photonics Research2019，7，8： | 0 |
| 17 | Preparation of Double-sided Nanostructure Based on Soft-nanoimprinting Lithography显示文摘Double-sided nanostructure has more excellent properties in high efficiency,high yield,and high capability devices,which becomes the attention spots in nanofabrication technology.We proposed a very simple method to fabricate the double-sided nanostructure on polymer elastic substrate.By using twice soft-nanoimprinting process,the same or different nanostructures array was fabricated onto the elastomeric slab substrate.In this paper,we fabricated double-sided nanopillars array with different diameters of 200nm and 350nm.In order to expand the applications field in optical and electronic devices,metal layer could be deposited onto the substrate before imprinting nanostructure. | Man Zhang Qiling Deng Hui Pang Lifang Shi Axiu Cao | 2018 | Journal of Microelectronic Manufacturing2018，1，2： | 0 |
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