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| 1 | Analysis and improvement of missile three-loop autopilots显示文摘The non-minimum phase feature of tail-controlled missile airframes is analyzed.Three selection strategies for desired performance indexes are presented.An acceleration autopilot design methodology based on output feedback and optimization is proposed.Performance and robustness comparisons between the two-loop and classical three-loop topologies are made.Attempts to improve the classical three-loop topology are discussed.Despite the same open-loop structure,the classical three-loop autopilot shows distinct characteristics from a two-loop autopilot with PI compensator.Both the two-loop and three-loop topologies can stabilize a static unstable missile.However, the finite actuator resource is the crucial factor dominating autopilot function. | Lin Defu Fan Junfang Qi Zaikang Mou Yu | 2009 | Journal of Systems Engineering and Electronics2009，20，4： | 10 |
| 2 | Cyclopalladated ferrocenylimines as efficient catalysts for homogeneous catalysis:A brief introduction to our preliminary achievements显示文摘Cyclopalladated ferrocenylimines as a novel kind of highly efficient palladium catalyst precursors, which are air-stable and easy to handle, have been successfully applied in a wide variety of catalytic reactions ranging from classical reactions, such as Heck, Suzuki, Sonogashira and Buchwald-Hartwig couplings, to cyanation, addition reactions of arylboronic acids, and coupling reactions involving terminal alkynes. The preliminary achievements regarding their applications to homogeneous catalysis are concisely described herein. | WU YangJie YANG Fan ZHANG JinLi CUI XiuLing GONG JunFang SONG MaoPing LI TieSheng | 2010 | Chinese Science Bulletin2010，55，25： | 2 |
| 3 | Control of static unstable airframes显示文摘The challenge and control problems of static unstable missiles are presented. The steady-state benefits of static instability are illustrated, while the corresponding control challenge is described both by the characteristic lag of airframe and the increment of necessary control usage. Control limitation led by unstable zero-pole pair is analyzed for preliminary design and evaluation. Linear control strategy is examined wherein two and three loop acceleration autopilots with different control usages are developed using an optimal control approach combined with frequency domain constraint. The weights selection and relation with system performance are detailed. Then the nonlinear backstepping recursive method is detailed to determine how well it is able to follow command and its engineering feasibility. The results show that a static unstable missile is controllable, while the actuator bandwidth is the crucial limited factor. There should be a compromise between overall performance and actuator payment. | Junfang Fan Defu Lin Zhong Su Qing Li | 2010 | Journal of Systems Engineering and Electronics2010，21，6： | 2 |
| 4 | Temporal-spatial distributions of road silt loadings and fugitive road dust emissions in Beijing from 2019 to 2020显示文摘Road silt loading(sL)is an important parameter in the fugitive road dust(FRD)emissions.In this study,the improved Testing Re-entrained Aerosol Kinetic Emissions from Roads(TRAKER)combined with the AP-42 method was firstly developed to quickly measure and estimate the sLs of paved roads in Beijing,China.The annual average sLs in Beijing was 0.59±0.31 g/m^(2)in 2020,and decreased by 22.4%compared with that in 2019.The seasonal variations of sLs followed the order of spring>winter>summer>autumn in the two years.The seasonal mean road sLs on the same type road in the four seasons presented a decline trend from^(2)019 to 2020,especially on the Expressway,decreasing 47.4%-72.7%.The road sLs on the different type roads in the same season followed the order of Major arterial∼Minor arterial∼Branch road>Express road,and Township road∼Country highway>Provincial highway∼National highway.The emission intensities of PM10 and PM_(2.5)from FRD in Beijing in 2020 were lower than those in 2019.The PM10 and PM_(2.5)emission intensities at the four planning areas in the two years all presented the order of the capital functional core area>the urban functional expansion area>the urban development new area>the ecological conservation and development area.The annual emissions of PM10 and PM_(2.5)from FRD in Beijing in 2020 were 74,886 ton and 18,118 ton,respectively,decreasing by∼33.3%compared with those in 2019. | Haibin Wang Lihui Han Tingting Li Song Qu Yuncheng Zhao Shoubin Fan Tong Chen Haoran Cui Junfang Liu | 2023 | Journal of Environmental Sciences2023，，10： | 1 |
| 5 | A race to uncover a panoramic view of primary liver cancer显示文摘Introduction Primary liver cancer,the second most common cause of cancer related death worldwide1,presents ethnic,etiological,sex,and geographical diversity2(Figure 1A).At the histological level,liver cancer includes two major types:hepatocellular carcinoma(HCC,about 80%)and cholangiocarcinoma(CCA,about 15%).Many etiological factors contribute to HCC development,such as hepatitis | Ruidong Xue Jing Li Fan Bai Xinwei Wang Junfang Ji Yinying Lu | 2017 | Cancer Biology & Medicine2017，14，4： | 1 |
| 6 | Integrated Metabolite and Gene Expression Profiles Identify Lipid Biomarkers Associated With Progression of Hepatocellular Carcinoma and Patient Outcomes显示文摘 | Anuradha Budhu Stephanie Roessler Xuelian Zhao Zhipeng Yu Marshonna Forgues Junfang Ji Edward Karoly Lun–Xiu Qin Qing–Hai Ye Hu–Liang Jia Jia Fan Hui–Chuan Sun Zhao–You Tang Xin Wei Wang | 2013 | Gastroenterology2013，，5： | 1 |
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