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Weighted spectral correlation angle target detection method for land‑based hyperspectral imaging

Frontiers of Optoelectronics 2023年第4期16卷 121-134页

作者： Qianghui wang Bing zhou Wenshen Hua Jiaju Ying Xun Liu yue Cheng Army Engineering University of PLA Shijiazhuang 050000China Army Engineering University of PLA Nanjing 210000China

In land-based spectral imaging,the spectra of ground objects are inevitably afected by the imaging conditions(weather conditions,atmospheric conditions,light conditions,zenith and azimuth angle conditions)and spatial distribution of targets,leading to uncertainties featured by“same object diferent spectrum”.That is,the spectrum of a ground object may change within a certain range under diferent imaging *** target detection(TD)methods are mainly based on similarity measurements and do not fully account for the spectral *** detection methods are prone to false detections or missed ***,reducing the impact of spectral uncertainties on TD is an important research topic in hyperspectral *** this paper,we frst review traditional TD methods and compare their principles and *** is found that the spectral correlation angle(SCA)method has good adaptability in land-based *** shortcoming of the SCA method that it cannot refect the local spectrum characteristics,is also *** the efect of spectral uncertainties cannot be completely overcome by the SCA method,a new similarity measurement method,the weighted spectral correlation angle(WSCA)method,is *** can reduce the infuence of spectral uncertainties on TD by increasing the weight of particular ***,we use two sets of experiments to analyze the efect of the WSCA method on *** performance in overcoming spectral uncertainties caused by variations in imaging conditions or uneven spatial distributions of targets is *** results show that the WSCA method can efectively reduce the infuence of spectral uncertainties and obtain a good detection result.

关键词： Hyperspectral image Spectral uncertain feature Target detection Land-based imaging condition Weighted spectral correlation angle(WSCA)

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Advances in air pollution control for vessels in China

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Journal of Environmental Sciences 2023年第1期123卷 212-221页

作者： Yanping Yang yue Gong Ying wang Xuecheng Wu Zhiying zhou Weiguo Weng Yongxin Zhang State Key Laboratory of Clean Energy Utilization College of Energy EngineeringZhejiang UniversityHangzhou 310027China Energy Engineering Design and Research Institute Co.Ltd. Zhejiang UniversityHangzhou 310027China

Vessel emissions have contributed a great deal to air quality deterioration in ***,the Chinese government has promulgated a series of stringent emission *** is in this context that vessel emission control technology research is in full *** particular,during the 13th Five-Year Plan,the air pollution control technology of vessels has greatly *** emission control has followed two main governance routes:source emission reduction and aftertreatment *** control focuses on alternative fuels,with two main directions,the development of new fuels and the modification of existing ***,after-treatment technologies have also been developed,including wet desulfurization technology using seawater or alkaline liquids as wet washing liquids and selective catalytic reduction(SCR)for the control of NOx *** to China’s increasingly stringent emissions standards and regulations,work on the development of clean alternative fuels and further upgrading the collaborative application of after-treatment technologies to meet the near-zero-emissions requirements of vessels is still necessary.

关键词： Vessels Legislation Emission control Liquefied natural gas Desulfurization Selective catalytic reduction

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Enamel matrix proteins in promoting saliva lubrication

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Friction 2024年第10期12卷 2298-2312页

作者： Hujun wang yue TANG Haonan QIU Jingyang HU Yuan SU Jing ZHENG Zhongrong zhou Tribology Research Institute School of Mechanical Engineering and Key Laboratory of Advanced Technologies of Materials(Ministry of Education)Southwest Jiaotong UniversityChengdu 610031China

Anti-wear performance of human enamel in the mouth is closely related to the lubrication of salivary *** is well known that the inorganic hydroxyapatite(HA)of the enamel plays an important role in the adsorption and pellicle-forming of salivary proteins on the enamel,but the role of enamel matrix proteins remains *** this study,the adsorption and lubrication behavior of salivary proteins on original,heated,and deproteinated enamel surfaces was comparatively investigated using an atomic force microscopy and nano-indentation/scratch *** with that on the original enamel surface,the adsorption and lubrication behavior of salivary proteins remains almost unchanged on the heated enamel surface(where the enamel matrix proteins are denatured but the size of HA crystalline nanoparticles keeps constant)but exhibits an obvious compromise on the deproteinated enamel surface(where the enamel matrix proteins are removed and agglomeration of HA crystallites occurs).The HA agglomeration weakens the electrostatic interaction of enamel surfaces with salivary proteins to cause a distinct negative influence on the adsorption and pellicle-forming of salivary ***,the negative effect is confirmed with a quartz crystal microbalance with *** summary,by regulating enamel nanostructure for appropriate electrostatic interactions between salivary proteins and enamel surfaces,the enamel matrix proteins play an essential role in the adsorption and pellicle-forming of salivary proteins on human enamel,and then contribute to saliva lubrication,which provides the enamel with an anti-wear *** findings will promote and assist the design of enamel-inspired anti-wear materials.

关键词： enamel matrix proteins hydroxyapatite(HA)crystalline nanoparticles salivary proteins adsorption lubrication

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Reducing dielectric confinement effect in ionic covalent organic nanosheets to promote the visible-light-driven hydrogen evolution

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Journal of Energy Chemistry 2023年第7期82卷 40-46,I0002页

作者： Guoqing Li Xiaolong Zhao Qihong yue Ping Fu Fangpei Ma Jun wang Yu zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816JiangsuChina

Ultra-thin two-dimensional(2D)organic semiconductors are promising candidates for photocatalysts because of the short charge diffusion pathway and favorable exposure of active sites plus the versatile ***,the inherent dielectric confinement of 2D materials will induce a strong exciton effect hampering the charge ***,we demonstrated an effective way to reduce the dielectric confinement effect of 2D ionic covalent organic nanosheets(iCONs)by tailoring the functional group via molecular *** ultra-thin CONs with different functional groups and the same ionic moieties were synthesized through Schiff base condensation between ionic amino monomer triaminoguanidinium chloride(TG)and aldehyde *** integration of the hydroxyl group was found to significantly increase the dielectric constant by enhancing the polarizability of ionic moieties,and thus reduced the dielectric confinement and the corresponding exciton binding energy(E_(b)).The champion hydroxyl-functional iCON exhibited promoted exciton dissociation and in turn a high photocatalytic hydrogen production rate under visible-light *** work provided insights into the rationalization of the dielectric confinement effect of low-dimensional photocatalysts.

关键词： Photocatalysis H_(2)evolution Ionic covalent organic framework Nanosheets 2D material Polarization

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Stability and Passivity Analysis for Lur'e Singular Systems with Markovian Switching

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International Journal of Automation and computing 2013年第1期10卷 79-84页

作者： Ping-Fang zhou yue-Ying wang Quan-Bao wang Ji-An Chen Deng-Ping Duan School of Aeronautics and Astronautics Shanghai Jiao Tong University

This paper is concerned with the stochastic stability and passivity analysis for a class of Lur’e singular systems with time-varying delay and Markovian switching. By using the free-weighting matrices approach, a delay-dependent stability criterion, which guarantees that the system is stochastically stable and robustly passive, is derived in terms of linear matrix inequality （LMI）. Two numerical examples are provided to illustrate the effectiveness of the proposed method. 更多还原

关键词： Lur’e singular time-delay systems Markovian jump systems delay-dependent passivity linear matrix inequality (LMI)

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PMS-Sorting:A New Sorting Algorithm Based on Similarity

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Computers, Materials & Continua 2019年第4期59卷 229-237页

作者： Hongbin wang Lianke zhou Guodong Zhao Nianbin wang Jianguo Sun yue Zheng Lei Chen College of Computer Science and Technology Harbin Engineering UniversityHarbin150001China Liren College of Yanshan University Yanshan UniversityQinhuangdao066004China College of Engineering and Computing Georgia Southern UniversityGeorgia30458USA

Borda sorting algorithm is a kind of improvement algorithm based on weighted position sorting algorithm,it is mainly suitable for the high duplication of search results,for the independent search results,the effect is not very good and the computing method of relative score in Borda sorting algorithm is according to the rule of the linear regressive,but position relationship cannot fully represent the correlation *** at this drawback,the new sorting algorithm is proposed in this paper,named PMS-Sorting algorithm,firstly the position score of the returned results is standardized processing,and the similarity retrieval word string with the query results is combined into the algorithm,the similarity calculation method is also improved,through the experiment,the improved algorithm is superior to traditional sorting algorithm.

关键词： Meta search engine result sorting query similarity Borda sorting algorithm position relationship

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Circumscription of the East Asia clade (Apiaceae subfamily Apioideae) and the taxonomic placements of several problematic genera

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Plant Diversity 2024年第2期46卷 206-218页

作者： Jing zhou Xinyue wang Shilin zhou Junmei Niu Jiarui yue Zhenwen Liu Stephen R.Downie School of Pharmaceutical Science and Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical University1168 Western Chunrong RoadYuhua StreetChenggong New CityKunming 650500China Yunnan Academy of Forestry and Grassland Kunming 650201China Gaoligong Mountain Forest EcosystemObservation and Research Station of Yunnan ProvinceKunming 650201China Yunnan Key Laboratory of Biodiversity of Gaoligong Mountain Kunming 650201China Department of Plant Biology University of Illinois at Urbana-ChampaignUrbanaIL 61801USA College of Modern Biomedical Industry Kunming Medical UniversityKunming 650500China

The East Asia(or Physospermopsis) clade was recognized in previous molecular phylogenetic investigations into the higher-level relationships of Apiaceae subfamily Apioideae. The composition of this clade, the phylogenetic relationships among its constituent taxa, and the placement of species previously determined to be problematic have yet to be resolved. Herein, nr DNA ITS sequences were obtained for150 accessions of Apioideae, representing species whose distributions are in East Asia or genera having one or more species included within the East Asia clade. These data, along with published ITS sequences from other Apioideae(for 3678 accessions altogether), were subjected to maximum likelihood and Bayesian inference analyses. The results show that the East Asia clade contains representatives of 11currently recognized genera: Hansenia, Hymenolaena, Keraymonia, Sinolimprichtia, Acronema, Hymenidium, Physospermopsis, Pimpinella, Sinocarum, Tongoloa, and Trachydium. However, the latter seven genera have members falling outside of the East Asia clade, including the generic types of all except Tongoloa. Within the clade, the species comprising these seven genera are widely intermingled, greatly increasing confusion among relationships than previously realized. The problematic species Physospermopsis cuneata is confirmed as falling within the East Asia clade, whereas P. rubrinervis allies with the generic type in tribe Pleurospermeae. Physospermopsis kingdon-wardii is confirmed as a member of the genus Physospermopsis, whereas the generic attributions of P. cuneata and Tongoloa stewardii remain unclear. Two species of Sinocarum(S. filicinum and S. wolffianum) are transferred into the genus Meeboldia. This is the most comprehensive molecular phylogenetic investigation of the East Asia clade to date, and while the results increase systematic understanding of the clade, they also highlight the need for further studies of one of the most taxonomically intractable groups in Api

关键词： Physospermopsis Pimpinella Sinocarum Tongoloa Trachydium

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Thickness dependence of the crystallization and phase transition in ZrO_(2)thin films

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Journal of Advanced Ceramics 2023年第4期12卷 822-829页

作者： yue Guan Jing zhou Haodong Zhong Weipeng wang Zhengjun Zhang Feng Luo Shuai Ning School of Materials Science and Engineering Smart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300350China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

Fluorite-structure binary oxides(e.g.,HfO_(2)and ZrO_(2))have attracted increasing interest for a broad range of applications including thermal barrier coatings,high-k dielectrics,and novel ferroelectrics.A crystalline structure plays a crucial role in determining physical and chemical *** evolution of ZrO_(2)thin films,particularly down to the nanometer scale,has not been thoroughly *** this work,we carried out systematic annealing analysis on the ZrO_(2)thin *** in-situ high-temperature X-ray diffraction(XRD)characterizations,a thickness dependence of crystallization and phase transition is *** of the thickness(10-300 nm),the as-prepared amorphous ZrO_(2)thin films are preferentially crystallized into a tetragonal(t)structure(high-temperature phase),which can be preserved down to room temperature(RT)upon anncaling at the corresponding crystallization temperaturc(T).When anncaling at temperaturcs higher than Tc,the transition from t to monoclinic(m;RT phase)will occur,and the quantity of the transition strongly depends on the film *** work expands the basic understanding of the phase transition in the ZrO_(2)thin films,and offers a path to the selective control over the phase structure for novel functionalities.

关键词： zirconia crystallization tetragonal(t) monoclinic(m) phase transition

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Organic photocatalysts:From molecular to aggregate level

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Nano Research 2022年第5期15卷 3835-3858页

作者： Chuxuan Yan Jiaqi Dong Yingzhi Chen Wenjie zhou Yu Peng yue Zhang Lu-ning wang School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Shunde Graduate School of University of Science and Technology Beijing Foshan 528399China

Organic semiconductors(OSCs)have the advantages of tunable molecular structures,suitable band gaps,and exceptional optoelectronic *** π-π stacking ability of OSCs also leads to appealing molecular stacking structure,function,and *** far,organic photocatalysts have engaged in homogeneous or heterogeneous photocatalysis in the form of free molecules,supported molecules,or ***,researches on organic photocatalysts have expanded from small organic molecules to the organic macromolecules,as well as their various nanostructures and nanocomposites including isolated zero-dimensional(0D),one-dimensional(1D),two-dimensional(2D),three-dimensional(3D)nanostructures,and their ***,many versatile strategies have been explored to improve photocatalytic ability and practicality either from molecular synthetic modification,crystal,or interface *** this review,we first discuss the photophysical and photochemical processes of organic photocatalysts that govern the ultimate photocatalytic efficiency;we then summarize different forms of organic photocatalysts,their rational design strategies,and mechanistic pathways,as well as their applications in H_(2) evolution,CO_(2) reduction,and environmental purification,aiming to highlight the structure/property relationships;we lastly propose ongoing directions and challenges for future development of organic photocatalysts in real use.

关键词： organic photocatalyst homogeneous photocatalysis heterogeneous photocatalysis nanostructure heterostructure

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Upgrading VFAs bioproduction from waste activated sludge via co-fermentation with soy sauce residue

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Frontiers of Environmental Science & Engineering 2019年第1期13卷 53-62页

作者： Yanqing Duan Aijuan zhou Kaili Wen Zhihong Liu Wenzong Liu Aijie wang Xiuping yue College of Environ mental Science and Engineering Taiyuan University of Technology Taiyuan 030024 China Shanxi Engineer Research Institute of Sludge Disposition and Resources Taiyuan University of Technology Taiyuan 030024 China Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology (SKLUWRE HIT) Harbin 150091 China

Conditioning of extra carbon sources has been widely reported to facilitate fermentation of waste activated sludge (WAS). Soy sauce residue (SSR) was a relatively untapped carbon source for sludge conditioning. This batch study aimed to evaluate the possible implementation of SSR for volatile fatty acids (VFAs) production from WAS. To upgrade the bioavailability of feedstock, three typical pretreatment methods were conducted, i.e., ammonium hydroxide (AH), sulfuric acids (SA) and thermal assisted alkaline (TA). AH pretreated test (AH-PT) outperformed due to a relatively strong structure decomposition of cellulosic materials as revealed by infrared spectroscopic analysis and crystal index. As a result, performed a high hydrolysis rate of 4449 mg COD/d, 1.12-1.23-fold higher than that in TA and SA pretreated tests (TA-PT and SA-PT), and 7.8-fold higher than that in the Control test. Meanwhile, a volatile fatty acids (VFAs) contribution of 401.2 mg COD/g SSR L and a maximum acidification rate of 3.59 d was recorded, with a high sum proportion of mall molecular acetic and propionic 82.2%, 11%-70% increase over the other three tests. Besides, speciation process characterized with functional genus differentiation was identified by microbial diversity and distribution investigation and canonical correspondence analysis (CCA). Finally, a potential market value of 0.49-0.65 Billion €/year was preliminary estimated, showing promise of resource recovery from both WAS and SSR instead of extensive disposal.

关键词： Waste activated sludge (WAS) Soy sauce residue (SSR) Sludge conditioning Volatile fatty acids (VFAs) Microbial diversity

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