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19篇 您的检索式:作者名="Yongpan"
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1Dynamic simulation of aerial towed decoy system based on tension recurrence algorithm显示文摘Dynamic model of aerial towed decoy system is established and simulations are performed to research the dynamic characteristics of the system. Firstly, Kinetic equations based on spinor are built, where the cable is discretized into a number of rigid segments while the decoy is modeled as a rigid body hinged on the cable. Then tension recurrence algorithm is developed to improve computational efficiency, which makes it possible to predict the dynamic response of aerial towed decoy system rapidly and accurately. Subsequently, the efficiency and validity of this algorithm are verified by comparison with Kane's function and further validated by wind tunnel tests.Simulation results indicate that the distance between the towing point and the decoy's center of gravity is suggested to be 5%–20% of the length of decoy body to ensure the stability of system.In up-risen maneuver process, the value of angular velocity is recommended to be less than0.10 rad/s to protect the cable from the aircraft exhaust jet. During the turning movement of aircraft, the cable's extent of stretching outwards is proportional to the aircraft's angular velocity.Meanwhile, the decoy, aircraft and missile form a triangle, which promotes the decoy's performance.Ma Dongli Wang Shaoqi Yang Muqing Dong Yongpan 2016Chinese Journal of Aeronautics2016,29,6:5
2The landscape of aging显示文摘Aging is characterized by a progressive deterioration of physiological integrity,leading to impaired functional ability and ultimately increased susceptibility to death.It is a major risk factor for chronic human diseases,including cardiovascular disease,diabetes,neurological degeneration,and cancer.Therefore,the growing emphasis on “healthy aging” raises a series of important questions in life and social sciences.In recent years,there has been unprecedented progress in aging research,particularly the discovery that the rate of aging is at least partly controlled by evolutionarily conserved genetic pathways and biological processes.In an attempt to bring full-fledged understanding to both the aging process and age-associated diseases,we review the descriptive,conceptual,and interventive aspects of the landscape of aging composed of a number of layers at the cellular,tissue,organ,organ system,and organismal levels.Yusheng Cai Wei Song Jiaming Li Ying Jing Chuqian Liang Liyuan Zhang Xia Zhang Wenhui Zhang Beibei Liu Yongpan An Jingyi Li Baixue Tang Siyu Pei Xueying Wu Yuxuan Liu Cheng-Le Zhuang Yilin Ying Xuefeng Dou Yu Chen Fu-Hui Xiao Dingfeng Li Ruici Yang Ya Zhao Yang Wang Lihui Wang Yujing Li Shuai Ma Si Wang Xiaoyuan Song Jie Ren Liang Zhang Jun Wang Weiqi Zhang Zhengwei Xie Jing Qu Jianwei Wang Yichuan Xiao Ye Tian Gelin Wang Ping Hu Jing Ye Yu Sun Zhiyong Mao Qing-Peng Kong Qiang Liu Weiguo Zou Xiao-Li Tian Zhi-Xiong Xiao Yong Liu Jun-Ping Liu Moshi Song Jing-Dong J.Han Guang-Hui Liu 2022Science China(Life Sciences)2022,65,12:4
3Feature context learning for human parsing显示文摘Parsing inconsistency, referring to the scatters and speckles in the parsing results as well as imprecise contours, is a long-standing problem in human parsing. It results from the fact that the pixel-wise classification loss independently considers each pixel. To address the inconsistency issue, we propose in this paper an end-to-end trainable, highly flexible and generic module called feature context module(FCM).FCM explores the correlation of adjacent pixels and aggregates the contextual information embedded in the real topology of the human body. Therefore, the feature representations are enhanced and thus quite robust in distinguishing semantically related parts. Extensive experiments are done with three different backbone models and four benchmark datasets, suggesting that FCM can be an effective and efficient plug-in to consistently improve the performance of existing algorithms without sacrificing the inference speed too much.Tengteng HUANG Yongchao XU Song BAI Yongpan WANG Xiang BAI 2019Science China(Information Sciences)2019,62,12:3
4Trending IC design directions in 2022显示文摘For the non-stop demands for a better and smarter society, the number of electronic devices keeps increasing exponentially;and the computation power, communication data rate, smart sensing capability and intelligence are always not enough. Hardware supports software, while the integrated circuit(IC) is the core of hardware. In this long review paper, we summarize and discuss recent trending IC design directions and challenges, and try to give the readers big/cool pictures on each selected small/hot topics. We divide the trends into the following six categories, namely, 1) machine learning and artificial intelligence(AI) chips, 2) communication ICs, 3) data converters, 4) power converters, 5) imagers and range sensors, 6) emerging directions. Hope you find this paper useful for your future research and works.Chi-Hang Chan Lin Cheng Wei Deng Peng Feng Li Geng Mo Huang Haikun Jia Lu Jie Ka-Meng Lei Xihao Liu Xun Liu Yongpan Liu Yan Lu Kaiming Nie Dongfang Pan Nan Qi Sai-Weng Sin Nan Sun Wenyu Sun Jiangtao Xu Jinshan Yue Milin Zhang Zhao Zhang 2022Journal of Semiconductors2022,43,7:3
5High-resolution Hadamard transform microscope fluorescence imaging: quantifying the DNA content in single cells显示文摘Hongwu Tang Meina Luo Yongpan Xiong Guanquan Chen 2005Analytical and Bioanalytical Chemistry2005,,4:1
6The Application of Fuzzy Neural Network in Distribution Center Location 显示文摘LI Yongpan LIU Yong 2011Energy Procedia2011,13,13:1
7Fuzzy controlmodel and simulation of supply airsystem in a test rig oflow-tempemture hot-water radiator system显示文摘Lu Zhen Zhang Jili Chen Yongpan et at 2010Energy and Buildings2010,42,3:1
83D Numer- ical Simulation on Fluid Flow and Heat Transfer Charac- teristics in Multistage Heat Exchanger With Slit Fins 显示文摘TAO Wenquan CHENG Yongpan LEE T S 2007Heat Mass Transfer2007,44,1:1
9Fuzzy control model and simulation of supply air system in a test rig of low-temperature hot-water radiator system显示文摘Jili zhang Yongpan Chen Tianyi Zhao Huiliu 0,,03:1
10Multiscale structural engineering of carbon nitride for enhanced photocatalytic H2O2 production显示文摘Carbon nitride(C_(3)N_(4))holds great promise for photocatalytic H_(2)O_(2)production from oxygen reduction.In spite of great research efforts,they still suffer from low catalytic efficiency primarily limited by the fast recombination of photogenerated charge carriers.In this work,we report the multiscale structural engineering of C_(3)N_(4)to significantly improve its optoelectronic properties and consequently photocatalytic performance.The product consists of porous spheres with high surface areas,abundant nitrogen defects,and alkali metal doping.Under visible light irradiation,our catalyst shows a remarkable H_(2)O_(2)production rate of 3,080μmol·g^(−1)·h^(−1),which is more than 10 times higher than that of bulk C_(3)N_(4)and exceeds those of most other C_(3)N_(4)-based photocatalysts.Moreover,the catalyst exhibits great stability,and can continuously work for 15 h without obvious activity decay under visible light irradiation,eventually giving rise to a high H_(2)O_(2)concentration of ca.45 mM.Qing He Bounxome Viengkeo Xuan Zhao Zhengyuan Qin Jie Zhang Xiaohan Yu Yongpan Hu Wei Huang Yanguang Li 2023Nano Research2023,16,4:1
11Evidence of MKK4 prooncogenic activity in breast and pancreatic tumors显示文摘Lei Wang YongPan Jia Le Dai 2004Oncogene2004,,23:1
12The Research on building cache for Android platform using soft references显示文摘Along with the mobile platform increasing development,Android operating system has become the dominant operating system on mobile platforms.As the result of the limitation of Android system computing environment and network resources,it is especially important to apply Cache technology to improve the efficiency of data access.In this paper,a detail study is made on soft reference technology of mobile platform and soft reference strategy is proposed to build a cache on the Android platform application.It has increased the use of system memory efficiently and data access performance.Meanwhile soft reference object can help the Dalvik virtual machine to manage memory and eliminate potential memory leaks well.Yongpan Sheng Ruiting Dai 2013无线互联科技2013,10,7:0
13Engineering BiOBr_(x)I_(1-x)solid solutions with enhanced singlet oxygen production for photocatalytic benzylic C-H bond activation mediated by N-hydroxyl compounds显示文摘The aerobic,selective oxidation of hydrocarbons via C-H bond activation is still a challenge.This work shows the achievement of the room temperature visible light driven photocatalytic activation of benzylic C-H bonds with N-hydroxysuccinimide over BiOBr_(x)I_(1-x)(0≤x≤1)solid solutions,whose valance bands were engineered through varying the ratio of bromide to iodide.The optimal BiOBr0.85I0.15 catalyst exhibited over 98%conversion ratio of ethylbenzene,which was about 3.9 and 8.9 times that of pure BiOBr and BiOI,respectively.The excellent photocatalytic activity of BiOBr0.85I0.15 solid solution can be ascribed to the orbital hybridization of the valence band containing both Br 4p and I 5p orbitals,which could promote photo-induced charge carrier separation and improve the generation of singlet oxygen.This work shed some light on the rational design of photocatalysts for targeted organic transformation.Yucui Bian Yongpan Gu Xiaofei Zhang Haijun Chen Zhongjun Li 2021Chinese Chemical Letters2021,32,9:0
14The Divergences and Convergence of British Policy on Tibet in 1945显示文摘Each of the three departments responsible for formulating British policies on Tibet within the British government, the British India Office, the British Foreign Office and the Government of British India, often stuck to its own views and pursued a line representing its own interests during the Second World War. Especially in 1945 when the war was coming to an end, changes in the international situation rapidly intensified their disputes and contradictions over the policy on Tibet.Zhang Yongpan, Editor, Lishi yanjiu, CASS Xiao Yun 2006Social Sciences in China2006,27,1:0
15A nature inspired molecular Ni-catalyst for efficient photocatalytic CO2 reduction to CO under visible light显示文摘Development of efficient molecular catalysts for photocatalytic CO2 reduction is desirable but challenging. At present, the majority of reported molecular catalysts consist of the transition metal centers coordinated by N-containing ligands. Inspired by the sulfur-containing active site found in carbon monoxide dehydrogenases, we here report a novel Ni-based molecular catalyst bearing 2,6-bis([(2-pyridinylmethyl)thio]methyl) pyridine as the pentadentate ligand. The product is assessed for photocatalytic CO2 reduction in acetonitrile/water solution using Ru(bpy)3Cl2 as the photosensitizer and triethanolamine as the electron donor.Under the optimal condition, a total of ca.25 μmol CO is produced after 7 h visible light irradiation with a large turnover number of 63 and high selectivity of 91%.Qing He Bin Wu Yongpan Hu Wei Huang Yanguang Li 2020Science China Chemistry2020,63,12:0
16Simultaneous Accelerator Parallelization and Point-to-Point Interconnect Insertion for Bus-Based Embedded SoCs显示文摘As performance requirements for bus-based embedded System-on-Chips(So Cs) increase, more and more on-chip application-specific hardware accelerators(e.g., filters, FFTs, JPEG encoders, GSMs, and AES encoders) are being integrated into their designs. These accelerators require system-level tradeoffs among performance, area, and scalability. Accelerator parallelization and Point-to-Point(P2P) interconnect insertion are two effective system-level adjustments. The former helps to boost the computing performance at the cost of area,while the latter provides higher bandwidth at the cost of routability. What's more, they interact with each other. This paper proposes a design flow to optimize accelerator parallelization and P2 P interconnect insertion simultaneously.To explore the huge optimization space, we develop an effective algorithm, whose goal is to reduce total So C latency under the constraints of So C area and total P2 P wire length. Experimental results show that the performance difference between our proposed algorithm and the optimal results is only 2.33% on average, while the running time of the algorithm is less than 17 s.Daming Zhang Yongpan Liu Shuangchen Li Tongda Wu Huazhong Yang 2015Tsinghua Science and Technology2015,20,6:0
17Highly crystalline and water-wettable benzobisthiazole-based covalent organic frameworks for enhanced photocatalytic hydrogen production显示文摘Two-dimensional covalent organic frameworks are promising for photocatalysis by virtue of their structural and functional diversity,but generally suffer from low activities relative to their inorganic competitors.To fulfill their full potential re quires a rational tailoring of their structures at different scales as well as their surface properties.Herein,we demonstrate benzobisthiazole-based covalent organic frameworks as a superior photocatalyst for hydrogen production.The product features high crystallinity with ordered 2.5-nm-wide cylindrical mesopores and great water wettability.These structural advantages afford our polymeric photo catalyst with fast charge carrier dynamics as evidenced by a range of spectroscopic characterizations and excellent catalytic performances when suspended in solution or supported on melamine foams.Under visible-light irradiation,it enables efficient and stable hydrogen evolution with a production rate of 487μmol h^(-1)(or a mass-specific rate of 48.7 mmol g^(-1)h^(-1))—far superior to the previous state of the art.We also demonstrate that hydrogen production can be stoichiometrically coupled with the oxidation conversion of biomass as exemplified by the conversion of furfuryl alcohol to 2-furaldehyde.Wei Huang Yongpan Hu Zhengyuan Qin Yujin Ji Xuan Zhao Yunling Wu Qing He Youyong Li Chunfeng Zhang Jun Lu Yanguang Li 2023National Science Review2023,10,1:0
18Thermal-Aware Floorplanning Considering Empty Space Effect Based on Genetic Algorithms显示文摘LIU Yongpan YANG Huazhong LUO Rong WANG Hui 2007Chinese Journal of Electronics2007,16,3:0
19Effect of LHRH crasis protein as a vaccine on reproductive function in male rats显示文摘Aim:To investigate the effect of Trx-LHRH, a new GnRH crasis protein, on antibody production and reproductive function in male rats. Methods: Trx-LHRH produced in vitro with a new crasis gene, which crasised Trx gene and GnRH gene together, was used as a vaccine with hydroalaminum base as the adjuvant in adult male SD rats. A second inoculation was performed 5 weeks later. Antibody level was measured by ELISA and androgen level by RIA thereafter. Results: Trx-LHRH successfully induced polycolonal antibody at the level of 1:1 280 - 2 560 four weeks after the first inoculation and 1:2 000 SIX weeks after the enhanced treatment. Testosterone level was reduced significantly (P<0.01). Sperm count was also reduced by Trx-LHRH treatment. However, there was reasonable individual variations. Conclusion: Trx-LHRH can be used as an effective vaccine to induce antibody production; at the same time, it restrains the function of hypothatamas-pituitary-testis axis.Rui-FenCai Qin-QinPan YongPan YueJia Ding-ZhiMa Xing-HaiWang Yu-GuiCui 2004Asian Journal of Andrology2004,6,3:0
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