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A guidance method for coplanar orbital interception based on reinforcement learning被引量：4
《Journal of Systems Engineering and Electronics》2021年第4期927-938,共12页ZENG Xin ZHU Yanwei YANG Leping ZHANG Chengming 
supported by the National Defense Science and Technology Innovation(18-163-15-LZ-001-004-13).
This paper investigates the guidance method based on reinforcement learning(RL)for the coplanar orbital interception in a continuous low-thrust scenario.The problem is formulated into a Markov decision process(MDP)mod...
关键词：orbital interception reinforcement learning(RL) Markov decision process(MDP) deep neural network(DNN) 
Bond-distorted Orbitals and Their Application to Benzene
《Chemical Research in Chinese Universities》1993年第4期335-338,共4页MO Yi-rong , WU Wei and ZHANG Qian-er (Department of Chemistry, Xiamen University, Xiamen, 361005) 
A state major key project for basic researches ; supported by the National Natural Science Foundation of China
The present paper covers a kind of localized orbitals, namely bond-distorted or-bitals in the valence bond calculation. Test calculation on benzene is reported. The results indicate that Dewar structures are important...
关键词：Ab initio Valence bond Bond-distorted orbital (EDO) BENZENE 
Eyelid and periorbital ecthyma gangrenosum due to Pseudomonas aeruginosa in an infant
《Pediatric Investigation》2017年第1期47-49,共3页Qi Lin Bing Hu Jitong Shi Wei Shi Wenhong Cao Li Li 
Received:9 May 2017,Accepted:19 September 2017。
1|INTRODUCTION Ecthyma gangrenosum(EG)is a rare invasive cutaneous infection primarily caused by Pseudomonas aeruginosa in immunosuppressed patients.It is characterized by a painless necrotic ulceration with a surroun...
关键词：INFANT ORBITAL RARE 
Updating the Historical Perspective of the Interaction of Gravitational Field and Orbit in Sun-Planet-Moon System
《International Journal of Astronomy and Astrophysics》2021年第3期343-369,共27页Yin Zhu 
Studying the two famous old problems that why the moon can move around the Sun and why the orbit of the Moon around the Earth cannot be broken off by the Sun under the condition calculating with F=GMm
关键词：Interaction of Gravitational Field Three-Body Problem Orbital Perturbation Theory Repulsive Gravity Neutralization of Gravity 
A Density Functional Study on the Geometries of Compounds Fe(HCN)_n^+ (n = 1～6)被引量：1
《Chinese Journal of Structural Chemistry》2004年第12期1346-1355,共10页胡建明  李奕  李俊篯  章永凡  陈文凯  
This research was supported by the National Natural Science Foundation of China (20273013; 20303002); the Key Foundation of Fujian Province (K02012); the Foundation of State Key Laboratory of Structural Chemistry (020051) and of Fuzhou University
The possible geometries of Fe(HCN)n (n = 1~6) compounds were studied by using + DFT/UB3LYP/6-31G(2df) method. The structure and ground state ...
关键词：Fe(HCN)n (n = 1~6) compounds density functional theory natural bond orbital                                + 
Non-probe compensation of optical vortices carrying orbital angular momentum被引量：4
《Photonics Research》2017年第3期251-255,共5页SHIYAO FU TONGLU WANG SHIKUN ZHANG ZHEYUAN ZHANG YANWANG ZHAI CHUNQING GAO 
National Basic Research Program of China(973 Program)(2014CB340002,2014CB340004)
In this paper, we demonstrate a scheme for compensating distorted optical vortex beams carrying orbital angular momentum. By inputting the intensity profile into the Gerchberg–Saxton algorithm [Optik 35, 237(1972)], ...
关键词：in on of Non-probe compensation of optical vortices carrying orbital angular momentum that SLM IS 
选煤厂输煤系统轨道式巡检机器人被引量：6
《煤炭科技》2021年第6期104-108,共5页李涛 于志强 史占锋 王永振 张晓光 
徐州市重点研发计划项目(kc19074)。
为替代选煤厂输煤系统的人工巡检,研发了一种轨道式巡检机器人。该机器人由内部锂电池供电,自带驱动电机,可以实现在轨道上折返运动。详细介绍了该轨道式巡检机器人的功能和组成,实地验证了其运行效果。应用结果表明,该巡检机器人可以...
关键词：选煤厂 巡检机器人 轨道式 双目摄像头 
Particle Motion in Surface Gravity Waves被引量：1
《Natural Science》2021年第2期18-20,共3页Kern E. Kenyon 
Fluid particles in translating surface gravity waves have an orbital motion which decreases in size with increasing mean depth. These wave characteristics came from observations and were not forecast theoretically. Th...
关键词：Surface Gravity Waves Orbital Particle Motion 
Electronic Properties of Armchair Graphene Nanoribbons with Oxygenterminated Edges:A Density Functional Study被引量：1
《Chinese Journal of Structural Chemistry》2015年第5期641-649,共9页GE Hong-Yu WANG Guo 
supported by the National Natural Science Foundation of China(No.21203127);the Beijing Higher Education Young Elite Teacher Project(YETP1629);the Scientific Research Base Development Program of the Beijing Municipal Commission of Education
Armchair graphene nanoribbons with different proportions of edge oxygen atoms are analyzed in this study using the crystal orbital method,which is based on density functional theory.Although buckled edges are present,...
关键词：graphene nanoribbon semiconductor-metal transition crystal orbital carrier mobility density functional theory 
Optimal design of near-Earth asteroid sample-return trajectories in the Sun–Earth–Moon system被引量：5
《Acta Mechanica Sinica》2016年第4期753-770,共18页Shengmao He Zhengfan Zhu Chao Peng Jian Ma Xiaolong Zhu Yang Gao 
supported by the National Natural Science Foundation of China(Grant11372311);the grant from the State key Laboratory of Astronautic Dynamics(2014-ADL-DW0201)
In the 6th edition of the Chinese Space Trajectory Design Competition held in 2014, a near-Earth asteroid sample-return trajectory design problem was released, in which the motion of the spacecraft is modeled in multi...
关键词：Near-Earth asteroid. Sample-return trajectory.Space trajectory design competition Orbital resonance Lunar gravity assist 
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