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66篇 您的检索式:作者名="Shaohui CHEN"
    题名 作者 年代 出处 被引量
1System Integration of Terrestrial Mobile Communication and Satellite Communication——The Trends, Challenges and Key Technologies in B5G and 6G显示文摘Mobile communication standards have been developed into a new era of B5G and 6G.In recent years,low earth orbit(LEO)satellites and space Internet have become hot topics.The integrated satellite and terrestrial systems have been widely discussed by industries and academics,and even are expected to be applied in those huge constellations in construction.This paper points out the trends of two stages towards system integration of the terrestrial mobile communication and the satellite communications:to be compatible with 5G,and to be integrated within 6G.Based on analysis of the challenges of both stages,key technologies are thereafter analyzed in detail,covering both air interface currently discussed in 3GPP for B5G and also novel network architecture and related transmission technologies toward future 6G.Shanzhi Chen Shaohui Sun Shaoli Kang 2020China Communications2020,17,12:57
2Principles and methods for the validation of quantitative remote sensing products显示文摘We first discuss the relativity of 'true value and homogeneity' for quantitative remote sensing products (QRSPs), and then propose the definitions of 'eigenaccuracy' and 'eigenhomogeneity' under practical conditions. The eigenaccuracy and eigenhomogeneity for land surface crucial parameters such as albedo, leaf area index (LAI), and surface temperature are analyzed based on a series of experiments. Secondly, we point out the differences and similarities between the scale-free phenomena of the QRSPs and the measurements of the coastline length (1-dimensional) and the curved surface area (2-dimensional). An information fractal algorithm for the QRSPs is presented. In a case study for the LAI, when the fractal dimension is 2.16, the ratio of the LAI retrieval values obtained respectively from remote sensing data of 30 m and 6 km pixel resolution can actually reach as high as 2.86 for the same 6 km pixel using the same retrieval model. Finally, we propose an operational validation method 'one test and two matches' and multipoint observation when the real situation does not allow carrying out scanning measurement without gap and overlap on the ground surface.RenHua Zhang Jing Tian ZhaoLiang Li HongBo Su ShaoHui Chen XinZhai Tang 2010Science China Earth Sciences2010,53,5:27
3A Comprehensive Survey of TDD-Based Mobile Communications Systems from TD-SCDMA 3G to TDLTE-Advanced 4G and 5G directions显示文摘TDD(Time Division Duplex) is one of the two duplex modes.TD-SCDMA(Time division Synchronous CDMA) is the first TDD-based cellular mobile system which is commercialized in wide area and large scale and TD-SCDMA is also the first cellular mobile system which adopted smart antenna technology,also called as beamforming.As the long term evolution of TD-SCDMA,TDLTE(A)(Time Division-Lone Term Evolution,and TD-LTE Advanced) introduced OFDM(Orthogonal Frequency Division Multiplexing)and enhanced smart antenna technology together with MIMO(Multiple Input Multiple Output),which are adopted by LTE FDD(Frequency Division Duplex) either.It is indicated that TD-SCDMA and TD-LTE(A)have opened a sustainable utilization era of TDD and smart antenna Technologies in the wireless mobile communication.This paper aims to present a systematic introduction to TDD-based mobile communications from TD-SCDMA to TD-LTE and beyond and its comparisons to FDD,with particular focuses on TDD key technologies,principles of TDD cellular mobile systems,TDD evolution path,and future TDD 5G directions.We hope that this paper will provide a comprehensive overview of TDD technology upgrade and its standard evolution,and serve as a valuable reference for research on 5G mobile communication systems.It is believed that TDD will play more important role in 5G.CHEN Shanzhi SUN Shaohui WANG Yingmin XIAO Guojun Rakesh Tamrakar 2015China Communications2015,12,2:17
4Review of small aspheric glass lens molding technologies显示文摘Shaohui YIN Hongpeng JIA Guanhua ZHANG Fengjun CHEN Kejun ZHU 2017Frontiers of Mechanical Engineering2017,12,1:9
5Study on the performance of arch dam influenced by relaxation of the foundations following excavation显示文摘This paper studies the influence of a stress relaxation zone caused by foundation excavation on the performance of Jinping-I arch dam, using the orthogonal experiment method. Firstly, by adopting the characteristic stress of the dam as an index and coupling it with range analysis, the most significant factors and the degree of relaxation influence on the arch dam performance are found. This is then combined with monitoring data from the dam, and the extent of influence on the arch dam performance caused by the relaxation is evaluated through numerical analysis. The results show that the relaxation of foundation excavation has a negative impact on the performance of the arch dam in general, the extent of elastic modulus degradation in the relaxation zone being the main factor affecting stresses in the dam. The relaxation of the rock mass leads to an increase in dam stress in local areas near the relaxation zone, but has little effect on more distant areas.DUAN ShaoHui REN QingWen CHEN JunPeng LI Qiang 2011Science China(Technological Sciences)2011,54,5:5
6Isolation and identification of novel casein-derived bioactive peptides and potential functions in fermented casein with Lactobacillus helveticus显示文摘The present study here establishes a complete and effective method for isolating,purifying and identifying extracellular and intracellular peptides,and also describes the characters and bioactivities of peptides from fermented casein with Lactobacillus helveticus.Intracellular peptides are much larger in quantity and more complex in composition than extracellular peptides,between which the correlation reveals proteolytic and metabolic mechanisms.In addition,totally 241 different peptide sequences were identified by Nano LC–MS/MS from casein(212)and Lactobacillus helveticus proteins(29).These casein-derived peptides mostly originated from-casein,followed byS1-casein,-casein,andS2-casein,and came from extracell(69)and intracell(143),in which common peptides have a total of 27.Forty-four of the identified peptides were previously described as bioactive,including angiotensinconverting enzyme(ACE)-inhibitory,antioxidant,immunomodulating,antimicrobial,DPP-IV inhibitory,antiamnesic and anticancer effects and so on.Thirteen peptides with the potential of some biological activities are obtained,which were described in previous studies.A total of 47 novel peptides of 5 to 26 amino acids that were not disclosed were obtained.The new sources of natural bioactive peptides may have the very high application value as potential new peptide drugs for treatment human diseases.The product peptide DELQDKIHPF found in both extracell and intracell was quantitatively analyzed using the MRM mode of UPLC-U3Q,23.1 and 9.76 ng/mL,respectively.The quantitative analysis of the potential bioactive peptide may also advance the production of peptide products in the future.Mengzhu Fan Tingting Guo Wanru Li Jing Chen Fushuo Li Chao Wang Yi Shi David Xi-an Li Shaohui Zhang 2019Food Science and Human Wellness2019,8,2:5
7Estimating the impact of land use change on surface energy partition based on the Noah model显示文摘陆地使用在表面精力分区上有重要影响,是众所周知的。在地区性的气候变化的上下文与陆地使用变化从网络发光(NR ) 学习理智的热流动(SHF ) 和潜伏的热流动(LHF ) 的分区的演变趋势是重要的。在这份报纸,我们学习了精力分区的反应用挪亚模型打使用。首先,在 2003 和 2005 之间的 SHF 和 LHF 的挪亚模型模拟结果包括地从 Changbai 山车站, Xilinhot 车站,和 Yucheng 车站用观察数据被验证。学习领域表示陆地使用的三种不同类型变化:过多的采伐森林,草地退化恶化,和地下水水平分别地衰退。学习时期随后通过 2034 从 2015 被扩大,使用四张投射陆地使用地图并且强迫从普林斯顿(2000-2004 ) 的数据。模拟结果证明在陆地使用变换期间, LHF 的年度一般水准去10.7%,上升10.1%,并且为 Changbai 山,内部蒙古,和北中国车站去11.5%,分别地当 SHF 的年度一般水准上升10.6%时,去10.1%,并且为三个区域去11.3%[出版摘要]Shaohui CHEN Hongbo SU Jinyan ZHAN 2014Frontiers of Earth Science2014,8,1:3
8Numerical Simulation of Dam-Break Flooding of Cascade Reservoirs显示文摘Previous studies at home and abroad have mainly focused on single dam-break, and little attention has been paid so far to the dam-break of cascade reservoirs.Multi-source flooding, which can lead to three-dimensional turbulent phenomena and superposition effects, is the main difference between the dam-break of cascade and single reservoirs. Detailed descriptions of the coupled numerical simulation of multi-source flooding have little been reported, and the initial wet riverbed is rarely considered in current models. Therefore, in this paper, a method based on the three-dimensional k-ε turbulence model coupled with the volume-of-fluid method is proposed to simulate the dam-break flooding of cascade reservoirs. The upstream river, reservoir, and downstream river are connected by the internal boundary method, and the initial conditions,including river flow and reservoir water, are determined according to the results of the numerical simulation. Coupled numerical simulation of different dam-break flooding is then achieved. The present work solves the challenges presented by the enhancement and superposition of natural river flow, upstream flooding, and downstream flooding.This paper provides a theoretical basis for future studies on the dam-break flood routing of cascade reservoirs.Zhengyin Zhou Xiaoling Wang Wenlong Chen Shaohui Deng Minghui Liu 2017Transactions of Tianjin University2017,23,6:3
9Isolation and characterization of liver epithelial progenitor cells from normal adult rhesus monkeys (Macaca mulatta)显示文摘Lifang Jin Shaohui Ji Xianghui Tang Xiangyu Guo Yongqing Lu Hongwei Chen Hongkui Deng Qi Zhou Weizhi Ji 2009Cell Research2009,19,2:2
10A CSI Acquisition Approach for mm Wave Massive MIMO显示文摘Massive Multiple-Input Multiple-Output(MIMO)is considered as a key technology for 4G and 5G wireless communication systems to improve spectrum efficiency by supporting large number of concurrent users.In addition,for the target frequency band of 5G system,mmWave band,massive MIMO is pivotal in compensating the high pathloss.In this paper,we investigate the channel state information(CSI)acquisition problem for mmWave massive MIMO.With hybrid analog-digital antenna architecture,how to derive the analog beamforming and digital beamforming is studied.An iterative analog beam acquisition approach is proposed to save system overhead and reduce beam searching complexity.Regarding the digital beamforming,a grouping based codebook is proposed to facilitate CSI feedback.The codebook is then extended to incorporate also analog beam acquisition.Furthermore,channel reciprocity is exploited to save CSI reporting overhead and a two-stage approach is proposed to fully utilize the channel reciprocity at both mobile station and base station side and accelerate the CSI acquisition procedure.Shanzhi Chen Qiubin Gao Runhua Chen Hui Li Shaohui Sun Zhengxuan Liu 2019China Communications2019,16,9:2
11Causes Leading to Formation of Shot Cokes and Measures for Its Prevention in Super Viscous Oil Delayed Coking Unit显示文摘射击焦炭经常在对待 thes 更起来的推迟的 coking 单位被形成粘滞在 PetroChina 的 Liaohe 石油化学的公司的油。可观的工作被执行了避免射击焦炭的形成。获得的测试结果证明了性质 ofs 更起来粘滞油在射击焦炭的形成起了一个关键作用。在调整并且优化以后,这个过程在产量 of118t/h 索引推迟的 coking 单位的操作政体超级粘滞油作为 498-502 °C 的 follows:a 反应温度被指定,是 0.17-0.25 MPa 的行动压力, 0.5-0.6 的recycle 比率和 355-365 °C .In 的分别塔底部温度同时,推迟的 coking 过程采用了措施提高化工物品的分别前讲道理地移开轻部分并且维持稳定的煤气的速度以便避免射击焦炭的形成。Chen Chunmao Zhang Feng Yan Guangxu Guo Shaohui 2007China Petroleum Processing & Petrochemical Technology2007,9,1:2
12Pretreatment of super viscous oil wastewater and its application in refinery显示文摘废水从超级粘滞因为它各种各样的器官的污染物质的高集中,处理的油不能被常规废水处理植物有效地在精炼厂对待。以便解决这个问题,很多调查在我们的工作被进行理解这的物理化学的性质,沉积, demulsification 和预告的处理超级粘滞炼油厂废水。结果证明为这废水的预告的处理的关键问题:(1 ) 优化了过程参数在沉积和 demulsification 过程被使用让油移动有效地恢复油并且把泡沫从废水移开;(2 ) 一个合适的絮凝过程被选择最小化油,推迟的固体(SS ) 和化学的氧需求(CODcr ) 。包括三连续的步的一个预告的处理过程:由沉积,由 demulsification 的油移动,和筹款分离的油移动,在 Liaohe 石油化学的同伴, PetroChina 和在自河满意的油被建议并且适用是不到 200 mg/L 和 CODcr 不到 2,500 mg/L ,它完全满足了要求为常规废水处理工厂流入,并且恢复超级粘滞油在 Liaohe 石油化学的同伴在起始的年里到达了 5,873 吨, PetroChina 。Chen Chunmao Yan Guangxu Guo Shaohui Yang Yong 2008Petroleum Science2008,5,3:2
13ELID grinding characteristics of glass-ceramic materials显示文摘Shaohui Yin Hitoshi Ohmori Yutang Dai Yoshihiro Uehara Fengjun Chen Hengning Tang 2008International Journal of Machine Tools and Manufacture2008,,3:2
14Profile error compensation in ultra-precision grinding of aspheric surfaces with on-machine measurement显示文摘CHEN Fengjun YIN Shaohui HUANG Han 2010International Journal of Machine Tools and Manufacture2010,50,5:1
15Oxidative Desulfurization of Simulated Gasoline over Metal Oxide-loaded Molecular Sieve 1 1 Supported by the National Natural Science Foundation of China (No.20276015) and the Natural Science Foundation of Hebei Province (No.203364).显示文摘Lanju CHEN Shaohui GUO Dishun ZHAO 2007Chinese Journal of Chemical Engineering2007,,4:1
16Fusing re- mote sensing images using a-Trous wavelet transform and empirical mode decomposition 显示文摘CHEN Shaohui SU Hongbo ZHANG Renhua 2008Pattern Recognition Letters2008,29,:1
17Synergies of carbon neutrality, air pollution control, and health improvement - a case study of China Energy Interconnection scenario显示文摘Climate change and air pollution are primarily caused by the combustion and utilization of fossil fuels.Both climate change and air pollution cause health problems.Based on the development of China,it is extremely important to explore the synergies of the energy transition,CO_(2) reduction,air pollution control,and health improvement under the target of carbon peaking before 2030 and carbon neutrality before 2060.This study introduces the policy evolution and research progress related to energy,climate change,and the environment in China and proposes a complete energy-climate-air-health mechanism framework.Based on the MESSAGE-GLOBIOM integrated assessment model,emission inventory and chemical transport model,and exposure-response function,a comprehensive assessment method of energy-climate-air-health synergies was established and applied to quantify the impacts of Chinese Energy Interconnection Carbon Neutrality(CEICN)scenario.The results demonstrate that,by 2060,the SO_(2),NO_(x) and PM_(2.5) emissions are estimated to be reduced by 91%,85%,and 90%respectively compared to the business-as-usual(BAU)scenario.The direct health impacts brought by achieving the goal of carbon neutrality will drive the proactive implementation of more emission reduction measures and bring greater benefits to human health.Jianxiang Shen Wenjia Cai Xiaotong Chen Xing Chen Zijian Zhao Zhiyuan Ma Fang Yang Shaohui Zhang 2022Global Energy Interconnection2022,5,5:1
18Profile Error Compensation in Ultra-precision Grinding of Aspheric Surfaces with On-machine Measurement 显示文摘CHEN Fengjun Y1N Shaohui HUANG H 2010International Journal of Machine Tools & Manufacture(S0890-6955)2010,50,5:1
19Profile error compensation in ultra-precision grinding of aspheric surfaces with on-machine measurement显示文摘CHEN Fengjun YIN Shaohui HUANG Han 2010International Journal of Machine Tools and Manufacture2010,50,5:1
20Oxidation of Thiophenes over Silica Gel in Hydrogen Peroxide/Formic Acid System 1 1 Supported by the National Natural Science Foundation of China (No.20276015) and the Natural Science Foundation of Hebei Province (No.203364).显示文摘Lanju CHEN Shaohui GUO Dishun ZHAO 2006Chinese Journal of Chemical Engineering2006,,6:1
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