National Science Review

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Open-environment machine learning
National Science Review - Tập 9 Số 8 - 2022
Zhi‐Hua Zhou
AbstractConventional machine learning studies generally assume close-environment scenarios where important factors of the learning process hold invariant. With the great success of machine learning, nowadays, more and more practical tasks, particularly those involving open-environment scenarios where important factors are subject to change, called open-environment ...... hiện toàn bộ
Recent progress in the synthesis of novel two-dimensional van der Waals materials
National Science Review - Tập 9 Số 5 - 2022
Renji Bian, Changcun Li, Qing Liu, Guiming Cao, Qundong Fu, Peng Meng, Jiadong Zhou, Fucai Liu, Zheng Liu
Abstract The last decade has witnessed the significant progress of physical fundamental research and great success of practical application in two-dimensional (2D) van der Waals (vdW) materials since the discovery of graphene in 2004. To date, vdW materials is still a vibrant and fast-expanding field, where tremendous reports have been published cove...... hiện toàn bộ
An overview of multi-task learning
National Science Review - Tập 5 Số 1 - Trang 30-43 - 2018
Yu Zhang, Qiang Yang
AbstractAs a promising area in machine learning, multi-task learning (MTL) aims to improve the performance of multiple related learning tasks by leveraging useful information among them. In this paper, we give an overview of MTL by first giving a definition of MTL. Then several different settings of MTL are introduced, including multi-task supervised learning, mult...... hiện toàn bộ
Precise fabrication of single-atom alloy co-catalyst with optimal charge state for enhanced photocatalysis
National Science Review - Tập 8 Số 1 - 2021
Yating Pan, Yunyang Qian, Xusheng Zheng, Shengqi Chu, Yijun Yang, Chunmei Ding, Xi Wang, Man Jin, Hai‐Long Jiang
Abstract While the surface charge state of co-catalysts plays a critical role for boosting photocatalysis, studies on surface charge regulation via their precise structure control remain extremely rare. Herein, metal-organic framework (MOF) stabilized bimetallic Pd@Pt nanoparticles, which feature adjustable Pt coordination environment and a controlle...... hiện toàn bộ
So sánh xu hướng nồng độ PM2.5 và ozone bề mặt tại Trung Quốc từ năm 2013 đến 2017 Dịch bởi AI
National Science Review - Tập 7 Số 8 - Trang 1331-1339 - 2020
Yonghong Wang, Wenkang Gao, Shuai Wang, Tao Song, Zhengyu Gong, Dongsheng Ji, Lili Wang, Zirui Liu, Guiqian Tang, Yanfeng Huo, Shili Tian, Jiayun Li, Mingge Li, Yuan Yang, Biwu Chu, Tuukka Petäjä, Veli‐Matti Kerminen, Hong He, Jiming Hao, Markku Kulmala, Yuesi Wang, Yuanhang Zhang
Tóm tắtMặc dù đã có nhiều sự chú ý đến việc điều tra và kiểm soát ô nhiễm không khí tại Trung Quốc, nhưng xu hướng nồng độ chất ô nhiễm không khí ở quy mô quốc gia vẫn chưa rõ ràng. Ở đây, chúng tôi đã điều tra định lượng sự biến đổi của các chất ô nhiễm không khí tại Trung Quốc bằng cách sử dụng các tập dữ liệu tổng hợp dài hạn từ năm 2013 đến 2017, trong đó chính...... hiện toàn bộ
MKRN3 regulates the epigenetic switch of mammalian puberty via ubiquitination of MBD3
National Science Review - Tập 7 Số 3 - Trang 671-685 - 2020
Chuanyin Li, Wenli Lü, Liguang Yang, Zhengwei Li, Xiaoyi Zhou, Rong Guo, Junqi Wang, Zhe Wu, Zhixia Dong, Guang Ning, Yujiang Geno Shi, Yinmin Gu, Peng Chen, Zijian Hao, Tianting Han, Meiqiang Yang, Wei Wang, Xuehui Huang, Yixue Li, Shan Gao, Ronggui Hu
AbstractCentral precocious puberty (CPP) refers to a human syndrome of early puberty initiation with characteristic increase in hypothalamic production and release of gonadotropin-releasing hormone (GnRH). Previously, loss-of-function mutations in human MKRN3, encoding a putative E3 ubiquitin ligase, were found to contribute to about 30% of cases of familial CPP. M...... hiện toàn bộ
Asymptomatic patients and asymptomatic phases of Coronavirus Disease 2019 (COVID-19): a population-based surveillance study
National Science Review - Tập 7 Số 10 - Trang 1527-1539 - 2020
Xueying Zheng, Sihui Luo, Yong Sun, Mingfeng Han, Jian Liu, Liangye Sun, Liangming Zhang, Ping Ling, Yu Ding, Katherine A. Fitzgerald, Zhirong Liu, Jianping Weng
Abstract In this population-based study, we identified 307 confirmed COVID-19 cases from massive surveillance, including 129 551 individuals screened at fever clinics or returning from Hubei and 3710 close contacts of confirmed COVID-19 patients. Among them, 17 patients were asymptomatic at initial clinical assessment. These asymptomatic patients on ...... hiện toàn bộ
Recent advances in the synthesis of hierarchically mesoporous TiO2 materials for energy and environmental applications
National Science Review - Tập 7 Số 11 - Trang 1702-1725 - 2020
Wei Zhang, Yong Tian, Haili He, Li Xu, Wei Li, Dongyuan Zhao
Abstract Because of their low cost, natural abundance, environmental benignity, plentiful polymorphs, good chemical stability and excellent optical properties, TiO2 materials are of great importance in the areas of physics, chemistry and material science. Much effort has been devoted to the synthesis of TiO2 nanomaterials for various applications. Am...... hiện toàn bộ
Recent ENSO evolution and its real-time prediction challenges
National Science Review - Tập 9 Số 4 - 2022
Rong‐Hua Zhang, Chuan Gao, Licheng Feng
The frequent occurrences of the second-year surface cooling condition in the eastern equatorial Pacific, as observed in late 2021, are attributed to decadal changes in the thermocline depth, which determine the relative dominances of local cooling effect in the east and subsurface warming effect remotely from the west. Coupled models need to adequately represent these processes in a balanc...... hiện toàn bộ
Extensive gene flow in secondary sympatry after allopatric speciation
National Science Review - Tập 9 Số 12 - 2022
Xinfeng Wang, Ziwen He, Zixiao Guo, Ming Yang, Shaohua Xu, Qipian Chen, Shao Shao, Sen Li, Cairong Zhong, Norman C. Duke, Suhua Shi
Abstract In the conventional view, species are separate gene pools delineated by reproductive isolation (RI). In an alternative view, species may also be delineated by a small set of ‘speciation genes’ without full RI, a view that has gained broad acceptance. A recent survey, however, suggested that the extensive literature on ‘speciation with gene f...... hiện toàn bộ
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