作者： Lin, Feng^1,2 （¹ Beijing Inst Technol, Sch Informat & Elect, Beijing 100081, Peoples R China. ;² Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China.）

出处： IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES 2018 Vol.66 No.3 P1263-1272

关键词： POWER-DIVIDING RATIO; DIRECTIONAL COUPLER; HYBRID COUPLER; PATCH ANTENNA; BAND

摘要： This paper presents a compact planar tunable quadrature coupler with improved phase responses. Wide coupling-tuning ratio is achieved by using two var ...

作者： Hao, Ling¹;Xu, Fei²;Chen, Qun^2,3;Wei, Mingshan¹;Chen, Lei²;Min, Yong² （¹ Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China. ;² Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China. ;³ Tsinghua Univ, Dept Engn Mech, Minist Educ, Key Lab Thermal Sci & Power Engn, Beijing 100084, Peoples R China.）

出处： APPLIED THERMAL ENGINEERING 2018 Vol.139 P213-221

关键词： OPERATIONAL OPTIMIZATION; RENEWABLE ENERGY; NETWORKS; SIMULATION; INERTIA; STORAGE

摘要： District heating networks have an ability to store heat to improve the flexibility of power systems, but it lacks a compatible method to analyze therm ...

作者： Chen, Xiaomei¹;Zhang, Feng¹;Ge, Yong¹;Shi, Lifu¹;Huang, Sheng¹;Tang, Jialun¹;Lv, Zhao¹;Zhang, Li²;Zou, Bingsuo²;Zhong, Haizheng¹ （¹ Beijing Inst Technol, Beijing Key Lab Nanophoton & Ultrafine Optoelect, Sch Mat Sci & Engn, 5 Zhongguancun South St, Beijing 100081, Peoples R China. ;² Beijing Inst Technol, Sch Phys, 5 Zhongguancun South St, Beijing 100081, Peoples R China.）

出处： ADVANCED FUNCTIONAL MATERIALS 2018 Vol.28 No.16

关键词： PEROVSKITE SINGLE-CRYSTALS; ROOM-TEMPERATURE SYNTHESIS; TOTAL-ENERGY CALCULATIONS; QUANTUM DOTS; HIGHLY LUMINESCENT; HALIDE PEROVSKITES; I NANOCRYSTALS; BR; CSPBX3; CL

摘要： An HBr-assisted slow cooling method is developed for the growth of centimeter-sized Cs4PbBr6 crystals. The obtained crystals show strong green photolu ...

作者： Shen, Wenqian¹;Dai, Linglong²;Shim, Byonghyo³;Wang, Zhaocheng²;Heath, Robert W., Jr.⁴ （¹ Beijing Inst Technol, Sch Informat & Elect, Beijing 100081, Peoples R China. ;² Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China. ;³ Seoul Natl Univ, Sch Elect & Comp Engn, Inst New Media & Commun, Seoul 151742, South Korea. ;⁴ Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78712 USA.）

出处： IEEE TRANSACTIONS ON COMMUNICATIONS 2018 Vol.66 No.11 P5235-5248

关键词： FINITE-RATE FEEDBACK; LIMITED FEEDBACK; WIRELESS SYSTEMS; DOWNLINK; INFORMATION

摘要： Channel feedback is essential in frequency division duplexing (FDD) massive multiple-input multipleoutput (MIMO) systems. Unfortunately, prior work on ...

作者： Chen, Jianliang¹;Sha, Deshang¹;Yan, Yu¹;Liu, Bin²;Liao, Xiaozhong¹ （¹ Beijing Inst Technol, Sch Automat, Adv Power Convers Ctr, Beijing 100081, Peoples R China. ;² Noveri, Beijing 100072, Peoples R China.）

出处： IEEE TRANSACTIONS ON POWER ELECTRONICS 2018 Vol.33 No.2 P1399-1409

关键词： INTEGRATED STARTER-GENERATOR; ENERGY-STORAGE SYSTEMS; ELECTRIC VEHICLES; COUPLED-INDUCTOR; PFC CONVERTERS; GAIN

摘要： In this paper, a multistage nonisolated high voltage conversion ratio (VCR) bidirectional dc-dc converter is proposed. The VCR is n times of the conve ...

作者： Zhao, Yu-jia¹;Li, Chun¹ （¹ Beijing Inst Technol, Inst Synthet Biosyst, Sch Chem & Chem Engn, Dept Biochem Engn, Beijing 100081, Peoples R China.）

出处： JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018 Vol.66 No.46 P12155-12165

关键词： BETA-AMYRIN SYNTHASE; ACETYL-COA UTILIZATION; SACCHAROMYCES-CEREVISIAE; FUNCTIONAL-CHARACTERIZATION; UDP-GLYCOSYLTRANSFERASES; GINSENOSIDE BIOSYNTHESIS; ISOPRENE PRODUCTION; COMPOUND K; COMBINATORIAL BIOSYNTHESIS; ESCHERICHIA-COLI

摘要： Triterpenoid saponins are triterpenoid glycoside compounds which have been widely used in pharmaceutical, agricultural, and food industries. Tradition ...

作者： Xue, Kun¹;Cui, Haoran¹;Du, Kaiyuan¹;Shi, Xiaoliang¹;Gan, Yixiang²;Bai, Chunhua¹ （¹ Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China. ;² Univ Sydney, Sch Civil Engn, Sydney, NSW, Australia.）

出处： POWDER TECHNOLOGY 2018 Vol.336 P220-229

关键词： DYNAMIC FRAGMENTATION; PARTICULATE SYSTEMS; SIMULATION

摘要： The shock dispersal of particle shells or rings by radially divergent impulsive loads takes the form of coherent particle jets which have much larger ...

作者： Hao, Qun¹;Li, Tengfei¹;Hu, Yao¹;Wang, Shaopu¹;Ning, Yan¹;Chen, Zhuo¹ （¹ Beijing Inst Technol, Sch Opt & Photon, Beijing Key Lab Precis Optoelect Measurement Inst, Beijing 100081, Peoples R China.）

出处： REVIEW OF SCIENTIFIC INSTRUMENTS 2018 Vol.89 No.6

关键词： VERTEX RADIUS; CURVATURE; LENS; WAVE; CONSTANT; DESIGN; LASER

摘要： Surface parameters, such as vertex radius of curvature and conic constant, are used to describe the shape of an aspheric surface. Surface parameter er ...

作者： Han, Shaojian¹;Zhang, Fengqi²;Xi, Junqiang¹ （¹ Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China. ;² Xian Univ Technol, Sch Mech & Precis Instrument Engn, Xian 710048, Shaanxi, Peoples R China.）

出处： IEEE ACCESS 2018 Vol.6 P70313-70323

关键词： REALIZATION; ECMS

摘要： Hybrid electric vehicle (HEV) technology is an effective way to resolve the problems of energy consumption and air pollution. Energy management strate ...

作者： Gai, Keke¹;Choo, Kim-Kwang Raymond²;Zhu, Liehuang¹ （¹ Beijing Inst Technol, Sch Comp Sci & Technol, Beijing, Peoples R China. ;² Univ Texas San Antonio, Dept Informat Syst & Cyber Secur, San Antonio, TX USA.）

出处： IEEE CLOUD COMPUTING 2018 Vol.5 No.6 P21-25

摘要： Blockchains, a decentralized storage technique, have many applications, including in reengineering cloud datacenters. This article proposes a conceptu ...