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Two-Hop Delay-Aware Energy Efficiency Resource Allocation in Space-Air-Ground Integrated Smart Grid Network
《Computers, Materials & Continua》2025年第5期2429-2447,共19页Qinghai Ou Min Yang Jingcai Kong Yang Yang 
Supported by the Self-funded Research Project of Beijing FibrLink Communications Co.Ltd.“Research on Key Technologies forUnifiedManagement of Air-to-Earth Integrated CommunicationNetworks(546826230034).”。
The lack of communication infrastructure in remote regions presents significant obstacles to gathering data from smart power sensors(SPSs)in smart grid networks.In such cases,a space-air-ground integrated network serv...
关键词：Energy efficiency effective capacity delay requirement power allocation smart grid space-air-ground integrated network 
Gulliver's Travels(节选)
《初中生学习指导》2025年第15期38-39,共2页林锋 
The next day I woke up with the sun on my face.But when I tried to get up,it was impossible because I was tied to the ground.There were lots of tiny people who were no more than 15 centimetres tall moving up my leg an...
关键词：tiny people tied groundthere GROUND BODY SUN LEG 
An analytical solution for the undrained ground response to tunnelling considering the excavation-induced desaturation
《Journal of Rock Mechanics and Geotechnical Engineering》2025年第4期1961-1972,共12页Alexandros N.Nordas Linard Cantieni Georgios Anagnostou 
When tunnelling through low-permeability saturated ground,the pore pressure decreases in the vicinity of the cavity.In certain instances of deep tunnels crossing weak rocks,the pore pressure may even become negative.A...
关键词：Ground response curve(GRC) Undrained conditions Desaturation Suction Brittle softening 
Analysis of driving factors for land subsidence in typical cities of the North China Plain based on geodetector technology
《Journal of Groundwater Science and Engineering》2025年第1期74-89,共16页Zhao-huan Huang Zhi-bin Huo Wei Wang Ji-xiang Zhu Chun-hao Zhang Rui-peng Xi 
supported by the Fundamental Research Funds for Central Public Welfare Research Institutes,CAGS(Project No.KY202302);China Geological Survey Project(DD20230719);China Geological Survey Project(DD20230427)。
The North China Plain is vital hub for agricultural production and urban development.However,decades of excessive groundwater extraction have resulted on significant land subsidence,posing severe threats to the region...
关键词：Land subsidence INSAR groundwater storage Anomalies Geodetector GRACE 
Assessment for shallow and large tunnel construction in weak ground conditions:Application of tunnel boring machines
《Deep Underground Science and Engineering》2025年第1期132-148,共17页Servet Karahan Candan Gokceoglu 
With recent technological advancements,tunnel boring machines(TBM)have developed and exhibited high performance in large diameters and weak ground conditions.Tunnels are crucial structures that significantly influence...
关键词：face pressure NATM railway tunnel TBM weak ground 
The GECAM ground search system for gamma-ray transients
《Science China(Physics,Mechanics & Astronomy)》2025年第3期161-174,共14页Ce Cai Yan-Qiu Zhang Shao-Lin Xiong Ping Wang Jian-Hui Li Xiao-Bo Li Cheng-Kui Li Yue Huang Shi-Jie Zheng Li-Ming Song Shuo Xiao Qi-Bin Yi Yi Zhao Sheng-Lun Xie Rui Qiao Yan-Qi Du Zhi-Wei Guo Wang-Chen Xue Chao Zheng Jia-Cong Liu Chen-Wei Wang Wen-Jun Tan Yue Wang Jin-Peng Zhang Chao-Yang Li Guo-Ying Zhao Xiao-Yun Zhao Xiao-Lu Zhang Zhen Zhang Wen-Xi Peng Xiang Ma Jing-Yan Shi Dong-Ya Guo Jin Wang Xin-Qiao Li Xiang-Yang Wen Zheng-Hua An Fan Zhang 
supported by the National Natural Science Foundation of China(Grant Nos.12303045,12273042,and 12373047);the National Key R&D Program of China(Grant No.2022YFF0711404);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant Nos.XDA15360102,XDA15360300,and XDA15052700);The GECAM(Huairou-1)mission was supported by the Strategic Priority Research Program on Space Science(Grant No.XDA15360000)of the Chinese Academy of Sciences;the support from the Natural Science Foundation of Hebei Province(Grant No.A2023205020);the Science Foundation of Hebei Normal University(Grant No.L2023B11)。
In the era of time-domain,multi-messenger astronomy,the detection of transient events on the high-energy electromagnetic sky has become more important than ever.The gravitational wave high-energy electromagnetic count...
关键词：gamma-ray sources gravitational waves data analysis gamma-ray telescopes 
How Human Activities Affect Groundwater Storage
《Research》2025年第1期308-319,共12页Ying Zhao Meiling Zhang Zhuqing Liu Jiabin Ma Fan Yang Huaming Guo Qiang Fu 
supported by the National Key Research and Development Program of China(2022YFD1500100);National Natural Science Foundation of China(52279034);Outstanding/Excellent Youth Project of Heilongjiang Province(JQ2021D001/YQ2021D003);Key Laboratory of Germplasm Innovation and Physiological Ecology of Coldland Grain Crops,Ministry of Education(CXSTOP202304).
Despite the recognized influence of natural factors on groundwater,the impact of human activities remains less explored because of the challenges in measuring such effects.To address this gap,our study proposes an app...
关键词：groundwater dynamics groundwater storage human activity carbon emission data economic development carbon emissions 
Experimental investigation of the effect of ground surcharge on the structural behavior of a quasi-rectangular tunnel
《Frontiers of Structural and Civil Engineering》2025年第3期427-444,共18页Yong YUAN Shu LIU Zhengliang XU Xiuzhi WANG Syed Muhammad Mudassir ZIA Jiao-Long ZHANG 
Financial support,jointly provided by the Ministry of Science and Technology of China(No.2021YFE0114100);the Federal Ministry of Education,Science,and Research(BMBWF)of Austria(No.CN11/2021)for the project“Intense Upgrades of the New Austrian Tunnelling Method(NATM)and Demonstration of its Applicability to High-Quality Urban Development”,is gratefully acknowledged;the National Natural Science Foundation of China(Grant No.U1934210);the Science and Technology Commission of Shanghai Municipality(Nos.21DZ1203505,22DZ1203005,21DZ1202803,and 21DZ1202806);the Shanghai Rising-Star Program(No.22QB1405000)for their financial support of this work.
The infrastructure in the urban core area is becoming increasingly dense,leading to restrictions on intensive development;however,there is a lack of adequate research on the structural mechanics of quasi-rectangular p...
关键词：quasi-rectangular pipe jacking ground surcharge model test safety assessment intensive construction technology 
Deployment dynamics and experiments of a tendon-actuated flexible manipulator
《Chinese Journal of Aeronautics》2025年第2期459-477,共19页Benteng ZHANG Jialiang SUN Haiyan HU 
the National Natural Science Foundation of China(Nos.11832005,12372042,12232011);Young Elite Scientists Sponsorship Program by CAST(No.2022QNRC001);the Fundamental Research Funds for the Central Universities(No.NS2023002);State Key Laboratory of Mechanics and Control for Aerospace Structures(Nanjing University of Aeronautics and Astronautics)(No.MCAS-S-0223K04).
The quantity of space debris on Earth orbit has escalated tremendously in recent years, presenting a significant hazard to human space operations. It is urgent to develop effective measures to capture and remove vario...
关键词：Flexible manipulator Tendon-actuated Dynamic modeling Deployment dynamics Ground experiments 
Passive Metasurface-Based Low Earth Orbit Ground Station Design
《Tsinghua Science and Technology》2025年第1期148-160,共13页Hao Pan Lili Qiu 
Low Earth Orbit(LEO)satellite communication is vital for wireless systems.The main challenges in designing LEO satellite ground stations include increasing the input signal strength to counteract severe path loss,and ...
关键词：Low Earth Orbit(LEO)communication passive metasurface phased array antenna 
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