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Human Activity Influences on Vegetation Cover Changes in Beijing, China, from 2000 to 2015

Meichen Jiang, Shufang Tian, Zhaoju Zheng, Qian Zhan, Yuexin He
2017 Remote Sensing  
, and Meichen Jiang analysed the results; Zhaoju Zheng revised the paper; Meichen Jiang wrote the paper.  ...  Author Contributions: Shufang Tian, Qian Zhan, and Meichen Jiang conceived and designed the experiments; Meichen Jiang did the satellite imagery pre-processing and data analysis; Yuexin He, Zhaoju Zheng  ... 
doi:10.3390/rs9030271 fatcat:mmi5ffizvfcw7j7zbwn3kpwene

A Novel Condition Monitoring Signal Analysis Method of Numerical Control Machine Tools in Varying Duty Operation

Xiaoyong Huang, Fei Zhao, Zheng Sun, Zhaoju Zhu, Xuesong Mei
2020 IEEE Access  
The internal sensor signals of the numerical controlled (NC) machine tools contain abundant information that associated with the operating state and the machining fault. However, the signal characteristics extracted in the time /frecquency domain miss its physical significance. This paper presents a signal preprocessing method in the spatial domain to extract the physical meaning characteristic of the internal sensor signals with the varying duty operation.The proposed method uses the encoder
more » ... gnal to resample the other condition signals in the spatial domain firstly. Then, the signals are analyzed by the Fourier transform to get the spectrum. Compared with the traditional methods, the physical meaning of the signal can be intuitively identified. Moreover, the characteristics can be obtained in the varying duty operation, instead of the uniform motion in the tradition methods. It is meaningful for the on-line monitoring, since the working condition of the machine tool is always changing in the machining process. The simulations and experiments verify the effectiveness of the proposed algorithm. INDEX TERMS Internal sensor, signal analysis, spatial domain, condition monitoring, varying duty operation.
doi:10.1109/access.2020.2988028 fatcat:dzkxq35zbfb5tllnzcdoeabyae

Water level affects availability of optimal feeding habitats for threatened migratory waterbirds

Yaara Aharon-Rotman, John McEvoy, Zheng Zhaoju, Hui Yu, Xin Wang, Yali Si, Zhenggang Xu, Zeng Yuan, Wooseog Jeong, Lei Cao, Anthony D. Fox
2017 Ecology and Evolution  
Extensive ephemeral wetlands at Poyang Lake, created by dramatic seasonal changes in water level, constitute the main wintering site for migratory Anatidae in China. Reductions in wetland area during the last 15 years have led to proposals to build a Poyang Dam to retain high winter water levels within the lake. Changing the natural hydrological system will affect waterbirds dependent on water level changes for food availability and accessibility. We tracked two goose species with different
more » ... ing behaviors (greater white-fronted geese Anser albifrons [grazing species] and swan geese Anser cygnoides [tuber-feeding species]) during two winters with contrasting water levels (continuous recession in 2015; sustained high water in 2016, similar to those predicted post-Poyang Dam), investigating the effects of water level change on their habitat selection based on vegetation and elevation. In 2015, white-fronted geese extensively exploited sequentially created mudflats, feeding on short nutritious graminoid swards, while swan geese excavated substrates along the water edge for tubers. This critical dynamic ecotone successively exposes subaquatic food and supports early-stage graminoid growth during water level recession. During sustained high water levels in 2016, both species selected mudflats, but also to a greater degree of habitats with longer established seasonal graminoid swards because access to tubers and new graminoid growth was restricted under high-water conditions. Longer established graminoid swards offer less energetically profitable forage for both species. | 10441 AHARON-ROTMAN eT Al.
doi:10.1002/ece3.3566 pmid:29238566 pmcid:PMC5723607 fatcat:ie3sfgu3wzf2vajztdmqlknsq4

Assessing the Impact of Soil on Species Diversity Estimation Based on UAV Imaging Spectroscopy in a Natural Alpine Steppe

Cong Xu, Yuan Zeng, Zhaoju Zheng, Dan Zhao, Wenjun Liu, Zonghan Ma, Bingfang Wu
2022 Remote Sensing  
Grassland species diversity monitoring is essential to grassland resource protection and utilization. "Spectral variation hypothesis" (SVH) provides a remote sensing method for monitoring grassland species diversity at pixel scale by calculating spectral heterogeneity. However, the pixel spectrum is easily affected by soil and other background factors in natural grassland. Unmanned aerial vehicle (UAV)-based imaging spectroscopy provides the possibility of soil information removal by virtue of
more » ... ts high spatial and spectral resolution. In this study, UAV-imaging spectroscopy data with a spatial resolution of 0.2 m obtained in two sites of typical alpine steppe within the Sanjiangyuan National Nature Reserve were used to analyze the relationships between four spectral diversity metrics (coefficient of variation based on NDVI (CVNDVI), coefficient of variation based on multiple bands (CVMulti), minimum convex hull volume (CHV) and minimum convex hull area (CHA)) and two species diversity indices (species richness and the Shannon–Wiener index). Meanwhile, two soil removal methods (based on NDVI threshold and the linear spectral unmixing model) were used to investigate the impact of soil on species diversity estimation. The results showed that the Shannon–Wiener index had a better response to spectral diversity than species richness, and CVMulti showed the best correlation with the Shannon–Wiener index between the four spectral diversity metrics after removing soil information using the linear spectral unmixing model. It indicated that the estimation ability of spectral diversity to species diversity was significantly improved after removing the soil information. Our findings demonstrated the applicability of the spectral variation hypothesis in natural grassland, and illustrated the impact of soil on species diversity estimation.
doi:10.3390/rs14030671 fatcat:b535csit6zgwnofwil5yoz2vha


2014 High Temperature Materials and Processes  
Zheng Effect of Rare Earth Yttrium on the Hot Ductility of Fe-36Ni Invar Alloy 531 E. Şentürk, M. Okutan, A. Demirer and N.  ...  Haitao Liu, Yanchong Yu, Weiqing Chen, Qingxian Wang and Guangshun Wang Effect of Mn/S Ratio on the Hot Ductility of Eco-friendly Bi-S based Free Cutting Steel 553 Miaomiao Gui, Yunhui Fang and Zhaoju  ... 
doi:10.1515/htmp-2014-frontmatter6 fatcat:cbysxglgxfahdbzehja2mzpzg4

Mapping functional diversity using individual tree-based morphological and physiological traits in a subtropical forest

Zhaoju Zheng, Yuan Zeng, Fabian D Schneider, Yujin Zhao, Dan Zhao, Bernhard Schmid, Michael E Schaepman, Felix Morsdorf
Zheng et al. Fig. 8 . 8 Morphological (left panels) and physiological (right panels) functional richness-area relationships.  ...  Zheng: conceptualization, data curation, formal analysis, methodology, software, validation, visualization, writing -original draft. Y.  ... 
doi:10.5167/uzh-195757 fatcat:6aqqlkofa5appm5grbedhrwy5m

Lower Cretaceous sauropod trackways from Lishui City and an overview of dinosaur dominated track assemblages from Zhejiang Province, China

Li-Da Xing, Chun-Yong Chou, Martin G. Lockley, Anthony Romilio, Hendrik Klein, Nan Li, W. Scott Persons
2018 Journal of Palaeogeography  
., 2008) , ornithischians , and ankylosaurians (Zheng et al., 2018) .  ...  Xianglugang Village, Suichang County 10 Sauropod and theropod (Yu, 2013) "Mid" Cretaceous Chaochuan Formation Yongkang Xishantou Village, Yongkang City 11 Ankylosaur Jinyunpelta sinensis (Zheng  ... 
doi:10.1186/s42501-018-0011-5 fatcat:4iuhjefnvrgf3befjtub2ddssm

Effects of long-term preservation on amphibian body conditions: implications for historical morphological research

Guocheng Shu, Yuzhou Gong, Feng Xie, Nicholas C. Wu, Cheng Li
2017 PeerJ  
ACKNOWLEDGEMENTS We thank Jinzhong Fu, Yuchi Zheng, Zhijun Liu and Daniel W.A. Noble for collecting and identifying the specimens in 2006.  ...  15 Kangding, Sichuan ; Scutiger mammatus 28 Jiulong etc, Sichuan ; Oreolalax pingii 14 Zhaojue, Sichuan ; Atympanophrys shapingensis 18 Zhaojue etc, Sichuan ;Hylidae Hyla gongshanensis 6 Xichang etc, Sichuan  ...  8 Zhaojue, Sichuan ; Odorrana margaretae 9 Dujiangyan etc, Sichuan ;Dicroglossidae Nanorana pleskei 10 Jiulong, Sichuan ; Fejervarya multistriata 5 Xichang, Sichuan ;Megophryidae Scutiger glandulatus  ... 
doi:10.7717/peerj.3805 pmid:28929024 pmcid:PMC5602676 fatcat:76zo25fncfdsxp3lksg4zcclou

Tadpole types of Chinese megophryid frogs (Anura: Megophryidae) and implications for larval evolution

Cheng Li, Xian-Guang Guo, Yue-Zhao Wang
2011 Current Zoology  
600984, 603099 34.8±1.3 (n =10) 35-38 Oreolalax lichuanensis Lichuan, Hubei 74I0714 66.4±3.1 (n =10) 31-35 Oreolalax major Wenchuan, Sichuan 2L0009 66.7±4.9 (n =10) 36-39 Oreolalax pingii Zhaojue  ...  AY561309 Zheng et al. (2004 a, b) Oreolalax lichuanensis AY561321 AY526214 Zheng et al. (2004a, b) Oreolalax major N/A EF397252 Fu et al. (2007) Oreolalax pingii N/A EF397259 Fu et al  ... 
doi:10.1093/czoolo/57.1.93 fatcat:hapkoiab25hslcxs47vswvpuw4

HIV Prevention and Health Poverty Alleviation — Liangshan Prefecture, Sichuan Province, China, 2017–2020

Zhongfu Liu, National Center for AIDS/STD Control and Prevention, China CDC, Beijing, China, Xuefeng Tang, Yufen Liu, Linglin Zhang, Yihui Yang, Yongli Zheng, Weixin Liu, Chunnong Jike, Hong Mai, Heying Fan, Gang Yu (+10 others)
2021 China CDC Weekly  
In 2009, 2012, and 2013, Zhaojue, Yuexi, and Meigu counties, respectively, reported an HIV prevalence of over 1%.  ...  Focusing on four key counties of Butuo, Zhaojue, Yuexi, and Meigu (hereafter referred to as the "four key counties"), a special campaign against HIV and poverty in Liangshan Prefecture was launched in  ... 
doi:10.46234/ccdcw2021.250 pmid:34888120 pmcid:PMC8633550 fatcat:pejmlhyh2nd47kml33yxzwtdpy

Front Matter: Volume 7145

2008 Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Monitoring and Assessment of Natural Resources and Environments  
Chen, Zhaojue County Agricultural Technology Station (China) 7145 05 The regional geological hazard forecast based on rainfall and WebGIS in Hubei, China [7145-04] G. Zheng, Y. Chao, H.  ...  Li, Mianning County Agricultural Technology Station (China); Armuzhong, Zhaojue County Agricultural Technology Station (China); D. Huang, Mianning County Agricultural Technology Station (China); Q.  ... 
doi:10.1117/12.819866 fatcat:ak2lywtg5vhh7nleyll6gvjygq

A new species of the Rana japonica group (Anura, Ranidae, Rana) from China, with a taxonomic proposal for the R. johnsi group

Han Wan, Zhi-Tong Lyu, Shuo Qi, Jian Zhao, Pi-Peng Li, Ying-Yong Wang
2020 ZooKeys  
Acknowledgements We thank the Hunan Badagongshan National Nature Reserve, Fujian Yashushan Nature Reserve, Jian Wang, Chun-Lin Liao, Hai-Long He, Zhao-Chi Zeng, Yu-Long Li, and Zheng-Yan Zhou for their  ...  cluster together with significant support (BPP = 1.00 and BS = 100) and little divergence (0.0-0.4% in COI and 0.0-0.4% in 16S), which is consistent with the original morphological identification by Zheng  ...  * SYS a001815 MT409007 MT418669 15 R. chaochiaoensis China: Sichuan: Zhaojue * SYS a001816 MT408957 MT418619 16 R. chensinensis China: Shaanxi: Huxian * KIZ RD05SHX01 KX269186 JF939080 17  ... 
doi:10.3897/zookeys.942.46928 pmid:32612445 pmcid:PMC7316803 fatcat:td7qegujxngg3ewguggff67ueq

Enterovirus D68 in hospitalized children with respiratory symptoms in Guangdong from 2014 to 2018: molecular epidemiology and clinical characteristics

Shi-Huan Tang, Ying Yuan, Zheng-Hua Xie, Man-Jun Chen, Xiao-Di Fan, Yong-Hui Guo, Meng-hui Hong, Shao-Hua Tao, Nan Yu
2021 Journal of Clinical Virology  
Acknowledgements We thank Zhaoju Deng (Utrecht University) for the critical review of the manuscript.  ...  Zheng-Hua Xie confirmed the laboratory evidence of EV-D68 infection. Man-Jun Chen performed the real-time RT-PCR and virus isolation.  ... 
doi:10.1016/j.jcv.2021.104880 pmid:34153861 fatcat:dii3qidiqnf5nm4ukg4x5ewjn4

A Multitask Learning Model for Traffic Flow and Speed Forecasting (April 2020)

Kunpeng Zhang, Lan Wu, Zhaoju Zhu, Jiang Deng
2020 IEEE Access  
ZHAOJU ZHU received the Ph.D. degree in mechanical engineering from Shandong University, China, in 2019.  ...  Zheng et al. proposed three classic non-parametric models to improve traffic speed prediction performance with reduced data dimensionality [15] .  ... 
doi:10.1109/access.2020.2990958 fatcat:urk2fun3c5d3lc7gnzgkl3yily

Integration and Transformation: A Study of the Sun and the Moon Depicted in the Imagery of Fuxi and Nüwa

Jinchao Zhao
2019 Asian Studies  
Figure 22 : 22 Sun God and Moon Goddess from the tomb of Zhaojue Temple, Chengdu, Sichuan. Second century CE. EasternHan (After Gong 1998, fi g. 345).  ...  The Eastern Han historian Ban Gu 班固 sees Nüwa as a subordinate official of Fuxi, while Zheng Xuan 鄭玄 raises Nüwa's status to the same of Fuxi, as one of the sanhuang 三皇 (Three Sovereigns). murals from  ... 
doi:10.4312/as.2019.7.2.13-45 fatcat:4odvmhft2fgy5jlhoyqgclp6ve
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