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| 1 | Optimal guidance of extended trajectory shaping显示文摘To control missile's miss distance as well as terminal impact angle, by involving the timeto-go-nth power in the cost function, an extended optimal guidance law against a constant maneuvering target or a stationary target is proposed using the linear quadratic optimal control theory.An extended trajectory shaping guidance(ETSG) law is then proposed under the assumption that the missile-target relative velocity is constant and the line of sight angle is small. For a lag-free ETSG system, closed-form solutions for the missile's acceleration command are derived by the method of Schwartz inequality and linear simulations are performed to verify the closed-form results. Normalized adjoint systems for miss distance and terminal impact angle error are presented independently for stationary targets and constant maneuvering targets, respectively. Detailed discussions about the terminal misses and impact angle errors induced by terminal impact angle constraint, initial heading error, seeker zero position errors and target maneuvering, are performed. | Wang Hui Lin Defu Cheng Zhenxuan Wang Jiang | 2014 | Chinese Journal of Aeronautics2014，27，5： | 11 |
| 2 | Porous FeO_x/BiVO_(4-δ)S_(0.08): Highly efcient photocatalysts for the degradation of Methylene Blue under visible-light illumination显示文摘Porous S-doped bismuth vanadate with an olive-like morphology and its supported iron oxide(y wt.% FeOx/BiVO4 δS0.08, y =0.06, 0.76, and 1.40) photocatalysts were fabricated using the dodecylamine-assisted alcohol-hydrothermal and incipient wetness impregnation methods, respectively. It is shown that the y wt.% FeOx/BiVO4 δS0.08photocatalysts contained a monoclinic scheetlite BiVO4 phase with a porous olive-like morphology, a surface area of 8.8–9.2 m2/g, and a bandgap energy of 2.38–2.42 eV. There was co-presence of surface Bi5+, Bi3+, V5+, V3+, Fe3+, and Fe2+species in y wt.% FeOx/BiVO4 δS0.08. The 1.40 wt.% FeOx/BiVO4 δS0.08sample performed the best for Methylene Blue degradation under visible-light illumination. The photocatalytic mechanism was also discussed. We believe that the sulfur and FeOx co-doping, higher oxygen adspecies concentration, and lower bandgap energy were responsible for the excellent visible-light-driven catalytic activity of 1.40 wt.% FeOx/BiVO4 δS0.08. | Zhenxuan Zhao Hongxing Dai Jiguang Deng Yuxi Liu Yuan Wang Xinwei Li Guangmei Bai Baozu Gao Chak Tong Au | 2013 | Journal of Environmental Sciences2013，25，10： | 4 |
| 3 | Surfactant-assisted solvo - or hydrothermal fabrication and characterization of high-surface-area porous calcium carbonate with multiple morphologies 显示文摘 | Zhao Zhenxuan Zhang Lei Dai Hongxing | 2011 | Microporous and Mesoporous Materials2011，138，123： | 1 |
| 4 | Time-to-go weighted optimal trajectory shaping guidance law 显示文摘 | Wang Hui Lin Defu Cheng Zhenxuan | 2011 | Journal of Beifing Institute of Technology2011，20，3： | 1 |
| 5 | The mapping methods and division of tectonic units of the regional tectonic map in the eastern China seas and adjacent regions显示文摘The geological-geophysical map series of the eastern China seas and adjacent region (1:1 000 000) will be published in the late half year of 2009. The regional tectonic map is one of the main professional maps. The Mapping methods, the division method of geological tectonic units and the main geological tectonic units are mainly discussed. The strata from Pliocene to Holocene are peeled off so as to display the Pre-Pliocene structures. In basins, isopaches are drawn for the Cenozoic deposits. The plate tectonic theory and present tectonic pattern are adopted as the priorities in tectonic division. As to the division of intraplate tectonic units, it is a revision, complement and improvement of previous dividing systems, and the nomenclature for each tectonic unit follows the current system in China. The first-order tectonic unit is plate (Pacific Plate, Eurasian Plate and Philippine Sea Plate). The second-order tectonic unit is tectonic domain (East Asian continental tectonic domain,East Asian continental margin tectonic domain and west Pacific tectonic domain). The Philippine Sea Plate and the west part of the Pacific Plate are called the West Pacific tectonic domain. The part of the Eurasian Plate involved in this study area can be further divided into East Asian continental tectonic domain and East Asian continental margin tectonic domain. The East Asian continental margin domain is composed of the Ryukyu island arc, the Okinawa Trough back-arc basin and the back-arc basin of Sea of Japan. The East Asian continental tectonic domain in this study area is composed of the Sino-Korea Massif, the Changjiang River (Yangtze) Massif and South China Massif. In turn, these massifs consist of basins, folded belts or uplift zones. The basins,the folded belts or the uplift zones are further divided into uplifts and depressions made up of sags and swells. | YIN Yanhong ZHANG Xunhua WEN Zhenhe GUO Zhenxuan | 2009 | Acta Oceanologica Sinica2009，28，4： | 1 |
| 6 | Surfactant-assisted solvo- or hydrothermal fabrication and characterization of high-surface-area porous calcium carbonate with multiple morphologies显示文摘 | Zhenxuan Zhao Lei Zhang Hongxing Dai Yucheng Du Xue Meng Ruzhen Zhang Yuxi Liu Jiguang Deng | 2010 | Microporous and Mesoporous Materials2010，，1： | 1 |
| 7 | Solvo-or hydrothermal fabrication and excellent carbon di- oxide adsorption behaviors of magnesium oxides with multi- ple morphogies and porous structures显示文摘 | ZHAO Zhenxuan DAI Hongxing DU Yucheng | 2011 | Materials Chem- istry and Physics2011，128，3： | 1 |
| 8 | The microemulsion preparation and high catalytic performance of mesoporous NiO nanorods and nanocubes for toluene combustion显示文摘 | GUANGMEI B HONGXING D JIGUANG D YUXI L WENGE Q ZHENXUAN Z XINWEI L HUANGGEN Y | 2013 | Chemical Engineering Journal2013，219，： | 1 |
| 9 | Surfactant-assisted hydrothermal fabrication and visible-light-driven photocatalytic degradation of methylene blue over multiple morphological BiVO 4 single-crystallites显示文摘 | Xue Meng Lei Zhang Hongxing Dai Zhenxuan Zhao Ruzhen Zhang Yuxi Liu | 2010 | Materials Chemistry and Physics2010，，： | 1 |
| 10 | Cultivation and Dissemination of Core Values in the New Media Age显示文摘The rapid development of information technology and the fierce conflict of multiple values lead information communication to present different characteristics in the new media era,which has brought both challenges and opportunities to the cultivation and dissemination of core values.With the development of new media,the environment for cultivating core values is becoming increasingly complex,and the main content of core values is being dispelled,thus weakening its function of leading and affecting its guiding role.At the same time,the development of new media can not only broaden the cultivation mode of core values and highlight the powerful force of core values,but also stimulate the people to highly identify with core values.At present,the new media has become the main tool and mainstream position for the dissemination of core values,so it is necessary to continuously innovate the communication mechanism of the core values,and enhance their pertinence and effectiveness communication,so that they can play a leading role in the whole society better. | Xu Zhenxuan | 2018 | 学术界2018，，6： | 0 |
| 11 | A Research on the 2014 Wenzhou M4.2 Earthquake in the Shanxi Reservoir显示文摘Complete records of more than 3,000 earthquake events in the Shanxi, Wenzhou reservoir earthquake sequence were recorded from August to November,2014 by the high-density,high-resolution monitoring stations of the Zhejiang Regional Digital Seismic Network and the reservoir earthquake monitoring network,with a maximum magnitude of M4. 2. Based on 3-D epicenter location, focal mechanism solutions, and in combination with the geological and tectonic characteristics of the reservoir area,the earthquake sequence is discussed in this paper. The linear fitting of the Hypo SAT location results show that the main shock occurred in the NW trending fault and the earthquake sequence is concentrated in bands along the active faults,with a strike of305 °,dipping SW with dip angle of 85 °. By using P-wave first motion symbols, we obtained the average focal mechanism of M ≥ 3. 5 earthquakes,with a strike 308 ° and dip 84 ° for nodal plane II. The field geological survey and research show that the strike,dip and rake of nodal plane II are roughly consistent with the occurrence of the Shuangxi-Jiaoxi fault. The comprehensive analysis reveals that the NW-trending Shuangxi-Jiaoxi fault is the seismogenic structure of the earthquakes. | Zou Zhenxuan Ma Zhijiang Zhou Xinmin Zhang Fan Li Jun Li Jinlong | 2017 | Earthquake Research in China2017，31，4： | 0 |
| 12 | Monolithic integration of flexible lithium-ion battery on a plastic substrate by printing methods显示文摘En ergy storage devices with flexible form factor have become critical components of wearable electr onic systems.In spired by methods of monolithic integration in the microelectronics fabrication process,we propose a planar flexible full-solid-state lithium-ion battery(FSLB)architecture and a layer-by-layer stencil printing assembly method for fabricating batteries on polyethylene terephthalate(PET)substrate.FSLBs use quasi-solid electrolyte based on LiTFSI and ultraviolet(UV)-curable ethoxylated trimethylolpropane triacrylate(ETPTA)polymeric matrix in combination with Li4Ti50i2(LTO)/LiFePO4(LFP)-based electrodes.Excellent mechanical flexibility(<10 mm bending radius)can be achieved.The electrochemical characteristics of electrolyte,including ion conductivity,physical stability during room-temperature and tender assembly processes,are promising.A complete thin film-shape FSLB demonstrated working operation both under planar and bending conditions.The unique architecture and assembly processes open new ways for planar flexible devices to be integrated with flexible energy devices. | Zhenxuan Zhao Huaqiang Wu | 2019 | Nano Research2019，12，10： | 0 |
| 13 | Spectral analysis of new black hole candidate AT2019wey observed by NuSTAR显示文摘AT2019 wey is a new galactic X-ray binary that was first discovered as an optical transient by the Asteroid Terrestrial-impact Last Alert System(ATLAS)on December 7,2019.AT2019 wey consists of a black hole candidate as well as a low-mass companion star(M_(star)≤1.0 M_(■))and is likely to have a short orbital period(P_(orb)≤16h).Although AT2019 wey began activation in the X-ray band on March 8,2020,it did not enter the soft state during almost the entire outburst.In this study,we present a detailed spectral analysis of AT2019 wey in the low/hard state during its X-ray outburst on the basis of Nuclear Spectroscopic Telescope Array(Nu S T AR)observations.We obtain tight constraints on several of its important physical parameters by applying the state of the art relxill relativistic reflection model family.In particular,we determine that the measured inner radius of the accretion disk is most likely to have extended to the innermost stable circular orbit(ISCO)radius,i.e.,R_(in)=1.38^(+0.23)_(-0.16)R_(ISCO).Hence,assuming R_(in)=R_(ISCO),we find the spin of AT2019 wey to be a*~0.97,which is close to the extreme and an inner disk inclination angle of i~22°.Additionally,according to our adopted models,AT2019 wey tends to have a relatively high iron abundance of AFe~5A_(Fe,■)and a high disk ionization state of logξ~3.4. | Ye Feng XueShan Zhao LiJun Gou YuFeng Li James FSteiner Javier AGarc´ıa Yuan Wang Nan Jia ZhenXuan Liao HuiXian Li | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，1： | 0 |
| 14 | Measuring positive public transit accessibility using big transit data显示文摘Most of the current existing accessibility measures quantify the potential of reaching desirable opportunities across space and time.Nevertheless,these potential measurements only illus-trate the maximum possible accessibility a person can have,which may not accurately measure real-world transit accessibility in urban areas.This paper introduces a novel methodology to measure positive public transit accessibility based on multi-source big public transit data such as Smart Card Data(SCD)and Global Navigation Satellite System trajectory data,which embed rich travel information and real-world spatio-temporal constraints.First,we use multi-source transit data to reconstruct trip chains,which are used to extract popular destinations.A novel transit accessibility measure is defined to account for latent trip information such as mode/route preference,opportunity attraction,and travel impedance that are difficult to capture explicitly via traditional normative measures.Finally,we produce accessibility maps to visualize time-varying and heterogeneous accessibility patterns distributed over the study region.We performed an empirical evaluation on real-world transit data collected in Shenzhen City,China,demonstrating the applicability and effectiveness of the proposed method in mapping positive transit accessibility over large metropolitan areas.The results and findings of the empirical study demonstrate that the proposed positive accessibility measure can better capture travel behavior characteristics and constraints than traditional normative measures.The measure-ment method can be used as a practical high-resolution mapping tool for transit decision makers in evaluating public transit systems,supporting strategic transit planning,and improv-ing daily transit management. | Tong Zhang Wenyuan Zhang Zhenxuan He | 2021 | Geo-Spatial Information Science2021，24，4： | 0 |
| 15 | Symmetric and symplectic methods for gyrocenter dynamics in time-independent magnetic fields显示文摘We apply a second-order symmetric Runge–Kutta method and a second-order symplectic Runge–Kutta method directly to the gyrocenter dynamics which can be expressed as a noncanonical Hamiltonian system.The numerical simulation results show the overwhelming superiorities of the two methods over a higher order nonsymmetric nonsymplectic Runge–Kutta method in long-term numerical accuracy and near energy conservation.Furthermore,they are much faster than the midpoint rule applied to the canonicalized system to reach given precision. | Beibei Zhu Zhenxuan Hu Yifa Tang Ruili Zhang | 2016 | International Journal of Modeling, Simulation, and Scientific Computing2016，7，2： | 0 |
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