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A method of Robust low-angle target height and compound reflection coefficient joint estimation

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Journal of Systems Engineering and Electronics 2022年第2期33卷 322-329页

作者： wang shenghua CAO Yunhe LIU Yutao School of Communications and Information Engineering Xi’an University of Posts and TelecommunicationsXi’an 710061China Science and Technology on Communication Networks Laboratory Shijiazhuang 050081China National Laboratory of Radar Signal Processing Xidian UniversityXi’an 710071China

It is always a challenging issue for radar systems to estimate the height of a low-angle target in the multipath propagation *** highly deterministic maximum likelihood estimator has a high accuracy,but the errors of the ground reflection coefficient and the reflecting surface height have serious influence on the *** this paper,a robust es-timation method with less computation burden is proposed based on the compound reflection coefficient multipath model for low-angle *** compound reflection coefficient is es-timated from the received data of the array and then a one-di-mension generalized steering vector is constructed to estimate the target *** algorithm is robust to the reflecting sur-face height error and the ground reflection coefficient ***-nally,the experiment and simulation results demonstrate the validity of the proposed method.

关键词： low-angle target robust joint estimation compound reflection coefficient multipath direction of arrival(DOA)

Emerging applicability of two-dimensional boron for energy catalysis

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2024年第10期25卷 877-888页

作者： Dake ZHANG Chengcheng ZHANG shenghua wang Wei SUN State Key Laboratory of Silicon Materials and Advanced Semiconductor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China

Due to their unique physical and chemical properties,two-dimensional(2D)boron nanosheets have received tremendous research attention and demonstrated substantial value in electronic devices,biomedicine,and energy *** the preparation of boron nanosheets,compared with the bottom-up synthesis predominantly employed for electronics,the top-down synthesis route offers more facile and scalable *** this mini-review,we mainly discuss the recent advances in the synthesis of boron nanosheets using the top-down strategy and the relevant applications in energy ***,inspired by our recent works on the novel applications of 2D silicon,we put forward prospects for designing boron nanosheets,providing insights into developing viable techniques for high-performance heterogeneous catalysis.

关键词： Two-dimensional(2D)boron nanosheets Top-down method Catalytic applications

Transformation of plant young proembryos by electroporation

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Chinese Science Bulletin 2000年第13期45卷 1202-1206,1249页

作者： Shitao Li shenghua wang Hongyuan Yang Wuhan Univ Res Ctr Dev Biol Wuhan 430072 Peoples R China

It is first reported that plant young proembryos expressed exogenous reporter genes by electroporation. Young proembryos with 8-32 cells and globular proembryos with 250-400 cells could be isolated by enzymatic maceration combined with microdissection. After electroporation with GUS or GFP genes, the proembryos were cultured for 1 -2 d in KM8p medium. At the field strength of electroporation 500-1 500 V/cm, blue reaction of GUS or green fluorescence of GFP could be observed in the proembryos. The highest transient expression frequency of young proembryos (2.2%) was obtained at the field strength of 750 V/cm, whereas the highest frequency of globular proembryos (5.9%) was obtained at the field strength of 1 250 V/cm. Taking the proportion of transformed cells in the whole cells of proembryos as efficient transformation frequency, the efficient transformation frequency of the young proembryos was 7 times that of the globular proembryos.

关键词： electroporation GUS GFP proembryo Nicotiana tabacum.

Decoratable hybrid-film-patch stabilized Pickering emulsions and their catalytic applications

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Nano Research 2015年第8期8卷 2603-2610页

作者： shenghua Ma Yinan wang Kunpeng Jiang Xiaojun Han State Key Laboratory of Urban Water Resource and Environment School of Chemical Engineering and Technology Harbin Institute ofTechnology Harbin 150001 China

We demonstrated a method to fabricate functional hybrid film patches that were used to form Pickering emulsions （PEs）. The hybrid patches were made of carbon nanotubes, Fe3O4 nanoparticles, octadecyltrimethoxysilane, and poly（diallyldimethylammonium chloride）. The aqueous phase of the hybridpatch stabilized PEs can be easily separated by applying a magnetic field. The hybrid-film-patch stabilized PEs are extremely stable and lasted for eight months at room temperature. Furthermore, they are easily ruptured by adding ethanol, and regenerated by vortexing the patches in aqueous/oil mixtures, enabling the inner hydrophilic side of the patches to be easily modified with metal nanoparticles. As an example, palladium nanoparticles were embedded into the surface of the hybrid patches using an in situ reduction method. The Pd functionalized patch formed PEs showed an excellent catalytic performance for the hydrogenation of acetone with a yield of 99.5%. The same batch of Pd functionalized patches was recycled 13 times without loss of the catalytic activity. The hybrid-patch formed PEs have a great potential in the catalytic field.

关键词： Pickering emulsion hybrid film patches catalysis carbon nanotubes Fe3O4 nanoparticles

Two‐dimensional germanium for photocatalysis

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Information ＆ Functional Materials 2024年第1期1卷 108-123页

作者： Chengcheng Zhang Guanshu Zhao Dake Zhang shenghua wang Wei Sun State Key Laboratory of Silicon Materials and Advanced Semiconductor Materials and School of Materials Science and EngineeringZhejiang UniversityHangzhouZhejiangChina Solar Fuels Group Department of ChemistryUniversity of TorontoTorontoOntarioCanada

Succeeding graphene a series of two‐dimensional materials(2D M)have been developed and applied in various *** an analog of silicene,2D germa-nium(2D Ge)has garnered vast attention owing to its novel structures and prolific properties,demonstrating substantial promise in semiconductor,catal-ysis,devices,and other burgeoning ***,2D Ge is advantageous in providing a massive specific surface area,preferable transport properties,a tunable band gap structure,and confinement *** with unique features,functionalized 2D Ge has become a competitive candidate for *** this review,we catalog various synthetic methods of 2D Ge,discuss its fundamental properties,and summarize recent *** also present a few perspectives to provide fresh insights into designing and exploring 2D germanium in future photocatalysis.

关键词： functionalization photocatalytic applications two‐dimensional germanium

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媒介演化视域下电影的人工智能换脸术的探究

当代电影 2022年第8期 36-44页

作者：王圣华北京信息科技大学公共管理与传媒学院

人工智能换脸术即AI换脸术是对电影起到变革作用的新技术。本文首先从媒介形态演化角度梳理了换脸术的沿革历程,从基于真实物理世界的实物换脸化妆术、基于数字图像的电影媒体世界换脸术、基于真实脸部和电影脸部映射关系的三维动作捕... 详细信息

人工智能换脸术即AI换脸术是对电影起到变革作用的新技术。本文首先从媒介形态演化角度梳理了换脸术的沿革历程,从基于真实物理世界的实物换脸化妆术、基于数字图像的电影媒体世界换脸术、基于真实脸部和电影脸部映射关系的三维动作捕捉换脸术到基于脸部数据库深度学习的AI换脸术,并分析AI换脸术的优劣势。其次结合具体案例分析AI换脸术在电影中的应用价值和应用潜力,进一步阐述其对电影工业的长远影响,并展望了这一技术的未来前景,最后基于AI换脸术的讨论对电影的技术美学进行了进一步的思考。

关键词： AI换脸术沿革应用未来发展

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中国皮影体可视化仿真方法研究

系统仿真学报 2015年第9期27卷 2126-2134页

作者：王圣华谭剑北京信息科技大学北京100192 中国科学院遥感与数字地球研究所北京100094

保护和保存皮影模型是中国的皮影戏可持续发展的紧迫任务。之前的中国皮影可视化研究中将皮影视为2维图像,可视化效果差,对皮影演出场景信息的保存和再现研究不足。以完整保存和逼真再现皮影可视化信息为目标,以体可视化为主线,分析了... 详细信息

保护和保存皮影模型是中国的皮影戏可持续发展的紧迫任务。之前的中国皮影可视化研究中将皮影视为2维图像,可视化效果差,对皮影演出场景信息的保存和再现研究不足。以完整保存和逼真再现皮影可视化信息为目标,以体可视化为主线,分析了可视化流程及元素,建立了理论模型、皮影文物信息的可视化数据模型。并且开发了对应的专用GPU渲染方法,通过专家打分法对模型仿真程度进行了检验。有助于中国皮影的文物性保护与场景再现,提高观赏的沉浸感,促进皮影非物质文化遗产的传承和传播。

关键词：中国皮影逼真体可视化 GPU渲染方法

Priority-Based Mixed Assembly Supporting Differentiated Service for Optical Burst Switched Networks

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光学学报 2003年第S1期23卷 707-708页

作者： Jianxin wang, Qingji Zeng, Hao chi, shenghua wang, Shilin Xiao, Zhizhong Zhang CBONT of Shanghai Jiaotong University, China 200030 2 Beijing Lyang Technology Co. Ltd. China 100085 CBONT of Shanghai Jiaotong University China 200030 Beijing Lyang Technology Co. Ltd. China 100085

In order to have a better support of differentiated service, we propose Priority-based mixed burst assembly, in which packets of different priorities are assembled in a burst with an assigned proportion, and the priorities are lined in an ascending order in a burst from head to tail. Simulation results show that the proposed scheme performs very well in terms of latency and packet loss probability.

关键词： for WDM IP Priority-Based Mixed Assembly Supporting Differentiated Service for Optical Burst Switched Networks into node OBS than PBMA been of QoS that length

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征集古木刻版《玉如意》戏本情缘

档案与建设 2009年第10期 51-52页

作者：汪盛华泰兴市史志档案办公室江苏泰兴225400

泰兴人谈婚论嫁,一提及嫌贫爱富的势利小人,就会拿戏文《玉如意》说事。《玉如意》是清乾隆年问泰兴新市严家垡严振先进士所写。他以泰兴南门外邬、郝两姓儿女亲家为原形,写邬家长女嫌贫爱富,临嫁时不肯上轿,邬公遂以次女代嫁郝砚耕,后... 详细信息

泰兴人谈婚论嫁,一提及嫌贫爱富的势利小人,就会拿戏文《玉如意》说事。《玉如意》是清乾隆年问泰兴新市严家垡严振先进士所写。他以泰兴南门外邬、郝两姓儿女亲家为原形,写邬家长女嫌贫爱富,临嫁时不肯上轿,邬公遂以次女代嫁郝砚耕,后郝竟高中状元,而长女所嫁富豪钱家衰败没落。《玉如意》用说唱的表现形式,把封建社会世态炎凉、生活细节描绘得淋漓尽致,雅俗共赏,文学价值较高,传唱至今已有二百余年,是泰兴乡土文化的代表之作。现有古木刻版戏本珍藏泰兴市档案馆内。

关键词：如意木刻情缘征集世态炎凉封建社会生活细节雅俗共赏