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| 1 | Stable classi?cation with limited sample: transferring a 30-m resolution sample set collected in 2015 to mapping 10-m resolution global land cover in 2017显示文摘As the world strives to reduce the impact of population growth, urbanization, agricultural expansion, and climate change on food security, energy and water shortage, resource over-exploration, biodiversity loss, environmental pollution, and ultimately human health, timely and higher resolution land cover information is urgently needed to achieve the sustainable development goals of the United Nations. | Peng Gong Han Liu Meinan Zhang Congcong Li Jie Wang Huabing Huang Nicholas Clinton Luyan Ji Wenyu Li Yuqi Bai Bin Chen Bing Xu Zhiliang Zhu Cui Yuan Hoi Ping Suen Jing Guo Nan Xu Weijia Li Yuanyuan Zhao Jun Yang Chaoqing Yu Xi Wang Haohuan Fu Le Yu Iryna Dronova Fengming Hui Xiao Cheng Xueli Shi Fengjin Xiao Qiufeng Liu Lianchun Song | 2019 | Science Bulletin2019，64，6： | 166 |
| 2 | China’s urban expansion from 1990 to 2010 determined with satellite remote sensing显示文摘Based on the same data source of Landsat TM/ETM+ in 1990s,2000s and 2010s,all urban built-up areas in China are mapped mainly by human interpretation.Mapping results were checked and refined by the same analyst with the same set of criteria.The results show during the last 20 years urban areas in China have increased exponentially more than 2 times.The greatest area of urbanization changed from Northeastern provinces in 1990s to the Southeast coast of China in Jiangsu,Guangdong,Shandong,and Zhejiang in 2010s.Urban areas are mostly converted from croplands in China.Approximately 17750 km 2 croplands were converted into urban lands.Furthermore,the conversion from 2000 to 2010 doubled that from 1990 to 2000.During the 20 years,the most urbanized provinces are Jiangsu,Guangdong,Shandong and Zhejiang.We also analyzed built-up areas,gross domestic production (GDP) and population of 147 cities with a population of greater than 500000 in 2009.The result shows coastal cities and resource-based cities are with high economic efficiency per unit of built-up areas,resource-based cities have the highest population density,and the economic efficiency of most coastal provinces are lower than central provinces and Guangdong.The newly created urban expansion dataset is useful in many fields including trend analysis of urbanization in China;simulation of urban development dynamics;analysis of the relationship among urbanization,population growth and migration;studies of carbon emissions and climate change;adaptation of climate change;as well as land use and urban planning and management. | WANG Lei LI CongCong YING Qing CHENG Xiao WANG XiaoYi LI XueYan HU LuanYun LIANG Lu YU Le HUANG HuaBing GONG Peng | 2012 | Chinese Science Bulletin2012，57，22： | 64 |
| 3 | A multi-resolution global land cover dataset through multisource data aggregation显示文摘Recent developments of 30 m global land characterization datasets(e.g., land cover, vegetation continues field) represent the finest spatial resolution inputs for global scale studies. Here, we present results from further improvement to land cover mapping and impact analysis of spatial resolution on area estimation for different land cover types. We proposed a set of methods to aggregate two existing 30 m resolution circa 2010 global land cover maps, namely FROM-GLC(Finer Resolution Observation and Monitoring-Global Land Cover) and FROM-GLC-seg(Segmentation), with two coarser resolution global maps on development, i.e., Nighttime Light Impervious Surface Area(NL-ISA) and MODIS urban extent(MODIS-urban), to produce an improved 30 m global land cover map—FROM-GLC-agg(Aggregation). It was post-processed using additional coarse resolution datasets(i.e., MCD12Q1, GlobCover2009, MOD44 W etc.) to reduce land cover type confusion. Around 98.9% pixels remain 30 m resolution after some post-processing to this dataset. Based on this map, majority aggregation and proportion aggregation approaches were employed to create a multi-resolution hierarchy(i.e., 250 m, 500 m, 1 km, 5 km, 10 km, 25 km, 50 km, 100 km) of land cover maps to meet requirements for different resolutions from different applications. Through accuracy assessment, we found that the best overall accuracies for the post-processed base map(at 30 m) and the three maps subsequently aggregated at 250 m, 500 m, 1 km resolutions are 69.50%, 76.65%, 74.65%, and 73.47%, respectively. Our analysis of area-estimation biases for different land cover types at different resolutions suggests that maps at coarser than 5 km resolution contain at least 5% area estimation error for most land cover types. Proportion layers, which contain precise information on land cover percentage, are suggested for use when coarser resolution land cover data are required. | YU Le WANG Jie LI XueCao LI CongCong ZHAO YuanYuan GONG Peng | 2014 | Science China Earth Sciences2014，57，10： | 24 |
| 4 | The first all-season sample set for mapping global land cover with Landsat-8 data显示文摘We report the world's first all-season training and validation sample sets for global land cover classification with Landsat-8 data.Prior to this,such samples were only available at a single date primarily from the growing season.It is unknown how much limitation such a single-date sample has to mapping global land cover in other seasons of the year.To answer this question,we selected available Landsat-8 images from four seasons and collected training and validation samples from them.We compared the performances of training samples in different seasons using Random Forest algorithm.We found that the use of training samples from any individual season would result in the best overall classification accuracy when validated by samples in the same season.The global overall accuracy from combined best seasonal results was 67.2% when classifying the 11 Level-1 classes in the Finer Resolution Observation and Monitoring of Global Land Cover(FROM-GLC) classification system.The use of training samples from all seasons(named all-season training sample set hereafter) produced an overall accuracy of 67.0%.We also tested classification within 10° latitude 60° longitude zones using all-season training subsample within each zone and obtained an overall accuracy of 70.2%.This indicates that properly grouped subsamples in space can help improve classification accuracies.All the results in this study seem to suggest that it is possible to use an all-season training sample set to reach global optimality with universal applicability in classifying images acquired at any time of a year for global land cover mapping. | Congcong Li Peng Gong Jie Wang Zhiliang Zhu Gregory S. Biging Cui Yuan Tengyun Hu Haiying Zhang Qi Wang Xuecao Li Xiaoxuan Liu Yidi Xu Jing Guo Caixia Liu Kwame O. Hackman Meinan Zhang Yuqi Cheng Le Yu Jun Yang Huabing Huang Nicholas Clinton | 2017 | Science Bulletin2017，62，7： | 21 |
| 5 | A possible new family of unconventional high temperature superconductors显示文摘We suggest a new family of Co/Ni-based materials that may host unconventional high temperature superconductivity(high-Tc). These materials carry layered square lattices with each layer being formed by vertex-shared transition metal tetrahedra cation–anion complexes. The electronic physics in these materials is determined by the two dimensional layer and is fully attributed to the three near degenerated t2gd-orbitals close to a d7 filling configuration in the d-shell of Co/Ni atoms. The electronic structure meets the necessary criteria for unconventional high Tcmaterials proposed recently by us to unify the two known high-Tcfamilies, cuprates and iron-based superconductors. We predict that they host superconducting states with a d-wave pairing symmetry with Tcpotentially higher than those of iron-based superconductors. These materials, if realized, can be a fertile new ground to study strongly correlated electronic physics and provide decisive evidence for superconducting pairing mechanism. | Jiangping Hu Congcong Le | 2017 | Science Bulletin2017，62，3： | 4 |
| 6 | Hot Topics in Recent Parkinson’s Disease Research:Where We are and Where We Should Go显示文摘Parkinson’s disease(PD),the second most common neurodegenerative disease,is clinically characterized by both motor and non-motor symptoms.Although overall great achievements have been made in elucidating the etiology and pathogenesis of PD,the exact mechanisms of this complicated systemic disease are still far from being clearly understood.Consequently,most of the currentlyused diagnostic tools and therapeutic options for PD are symptomatic.In this perspective review,we highlight the hot topics in recent PD research for both clinicians and researchers.Some of these hot topics,such as sleep disorders and gut symptoms,have been neglected but are currently emphasized due to their close association with PD.Following these research directions in future PD research may help understand the nature of the disease and facilitate the discovery of new strategies for the diagnosis and therapy of PD. | Song Li Congcong Jia Tianbai Li Weidong Le | 2021 | Neuroscience Bulletin2021，37，12： | 2 |
| 7 | A possible family of Ni-based high temperature superconductors显示文摘We suggest that a family of Ni-based compounds, which contain [Ni_2M_2O]~2à(M = chalcogen) layers with an antiperovskite structure constructed by mixed-anion Ni complexes, Ni M_4O_2, can be potential high temperature superconductors(high-Tc) upon doping or applying pressure. The layer structures have been formed in many other transitional metal compounds such as La_2B_2Se_2O_3(B = Mn, Fe, Co). For the Ni-based compounds, we predict that the parental compounds host collinear antiferromagnetic states similar to those in iron-based high temperature superconductors. The electronic physics near Fermi energy is controlled by two egd-orbitals with completely independent in-plane kinematics. We predict that the superconductivity in this family is characterized by strong competition between extended s-wave and d-wave pairing symmetries. | Congcong Le Jinfeng zeng Yuhao Gu Guang-Han Cao Jiangping Hu | 2018 | Science Bulletin2018，63，15： | 2 |
| 8 | Electronic physics and possible superconductivity in layered orthorhombic cobalt oxychalcogenides显示文摘We suggest that cobalt-oxychalcogenide layers constructed by vertex sharing CoA_2O_2(A = S, Se, Te) tetrahedra, such as BaCoAO, are strongly correlated multi-orbitals electron systems that can provide important clues on the cause of unconventional superconductivity. Differing from cuprates and iron-based superconductors, these systems lack of the D_(4h) symmetry classification. However, their parental compounds possess antiferromagnetic(AFM) Mott insulating states through pure superexchange interactions and the low energy physics near Fermi surfaces upon doping is mainly attributed to the three t_(2g) orbitals that dominate the AFM interactions. We derive a low energy effective model for these systems and predict that a d-wave-like superconducting state with reasonable high transition temperature can emerge by suppressing the AFM ordering even if the pairing symmetry can not be classified by the rotational symmetry any more. | Congcong Le Shengshan Qin Jiangping Hu | 2017 | Science Bulletin2017，62，8： | 1 |
| 9 | Hypocretin neuron hyperexcitability in the hypothalamus:a newly discovered culprit in aging-related sleep impairment显示文摘The recent research published in Science by Li et al.1 provides compelling evidence that the hyperexcitability of arousalpromoting hypocretin(Hcrt,also called orexin)neurons is closely associated with sleep instability during aging(Fig.1).Their findings reveal the underlying neural mechanisms of aging-related sleep impairment. | Tianbai Li Congcong Jia Weidong Le | 2022 | Signal Transduction and Targeted Therapy2022，7，8： | 1 |
| 10 | Predicting diamond-like Co-based chalcogenides as unconventional high temperature superconductors显示文摘We predict Co-based chalcogenides with a diamond-like structure can host unconventional high temperature superconductivity(high-Tc). The essential electronic physics in these materials stems from the Co layers with each layer being formed by vertex-shared CoA_4(A=S, Se, Te) tetrahedra complexes, a material genome proposed recently by us to host potential unconventional high-Tcclose to a d7 filling configuration in 3 d transition metal compounds. We calculate the magnetic ground states of different transition metal compounds with this structure. It is found that(Mn, Fe, Co)-based compounds all have a G-type antiferromagnetic(AFM) insulating ground state while Ni-based compounds are paramagnetic metal.The AFM interaction is the largest in the Co-based compounds as the three t2 gorbitals all strongly participate in AFM superexchange interactions. The abrupt quenching of the magnetism from the Co to Ni-based compounds is very similar to those from Fe to Co-based pnictides in which a C-type AFM state appears in the Fe-based ones but vanishes in the Co-based ones. This behavior can be considered as an electronic signature of the high-Tcgene. Upon doping, as we predicted before, this family of Co-based compounds favor a strong d-wave pairing superconducting state. | Jiangping Hu Yuhao Gu Congcong Le | 2018 | Science Bulletin2018，63，20： | 0 |
| 11 | RE2(Cu1-xNix)5As3O2(RE=La,Pr,Nd)的反常穹顶状超导电性显示文摘文章简介超导电性与电荷密度波、自旋密度波或磁性相互作用的一个重要表现是铜酸盐、铁基和重费米子超导体中的穹顶状超导临界温度(Tc),在不同的掺杂范围内可能会出现赝能隙、量子临界点和奇异金属等新奇物性,因此探索新型超导体中的穹顶状Tc对探测突现效应很有意义。 | Xu Chen 郭建刚 Chunsheng Gong Erjian Cheng Congcong Le Ning Liu Tianping Ying Qinghua Zhang Jiangping Hu Shiyan Li 陈小龙 | 2020 | 科学新闻2020，，2： | 0 |
| 12 | Theoretical studies of superconductivity in doped BaCoSO显示文摘我们调查可以在做的 BaCoSO 存在的超导性,有强壮的 antiferromagnetic 的多轨道的莫特绝缘体扎根了状态。超导性在由吝啬的领域途径和随机的多轨道的模型分阶段执行的 t-J 类型和哈伯德类型被学习近似(RPA ) 分析。就算没有 C 4 旋转对称,系统仍然带象与无差距的节点配对对称状态一样的 d 波浪,这被发现,符号在费密表面上改变了超导的顺序参数。结果大部分正在做感觉迟钝。处于这个超导的状态,三 t 2g orbitals 在动量空间有很不同的超导的表格因素。特别地, th d x 2 y 2 轨道有 s 波浪相似配对表格因素。二个方法也在费密表面的不同部分上预言很不同的配对的力量。这些结果建议 BaCoSO 和相关材料能是新地面为异乎寻常的高温度超导性测试并且建立基本原则。 | Shengshan Qin Yinxiang Li Qiang Zhang Congcong Le Jiangping Hu | 2018 | Frontiers of physics2018，13，3： | 0 |
| 13 | CdTe/CdSe-sensitized photocathode coupling with Ni-substituted polyoxometalate catalyst for photoelectrochemical generation of hydrogen显示文摘In terms of photoelectrochemical(PEC)hydrogen evolution,substantial challenge still remains regarding the controllable fabrication of quantum dots(QDs)-sensitized photocathodes with enhanced visible-light absorption,efficient charge carrier separation,and directional migration at the electrode interface.In this work,the CdTe/CdSe QDs-sensitized photocathodes were delicately constructed on p-type NiO-coated indium tin oxide(ITO)electrodes by spin-coating approach.The resulting co-sensitized photocathode exhibits a favorable pseudo-Type Ⅱ energetic band alignment that combines the advantages of strong light absorption of constituent QDs as well as the effective and oriented charge separation and migration.Upon green LED light illumination,the photogenerated electrons could be effectively transferred to a tetra-nickel-substituted polyoxometalate catalyst for hydrogen production while photogenerated holes will be scavenged at the NiO/ITO electrode.Under minimally optimized conditions,the pseudo-Type Ⅱ CdTe/CdSe-sensrtized photocathode yields a photcx:urrent density of over 100 pA/cm^(2) and a Faradaic efficiency of〜100%,which is among one of the most efficient QDs-based photocathode systems coupling with Ni-substituted polyoxometalate catalyst for photoelectrochemical hydrogen generation. | Junhao Zhang Mo Zhang Yuanyuan Dong Congcong Bai Yeqin Feng Le Jiao Hongjin Lv | 2022 | Nano Research2022，15，2： | 0 |
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