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Auto-registration and Orthorecification Algorithm for the Time Series HJ-1A/B CCD Images

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Journal of Mountain Science 2013年第5期10卷 754-767页

作者： BIAN Jin-hu li Ai-nong JIN Hua-an LEI Guang-bin HUANG Cheng-quan li meng-xue Digital Mountain and Remote Sensing Application Center Institute of Mountain Hazards and EnvironmentChinese Academy of Sciences University of Chinese Academy of Sciences Department of Geography University of Maryland2181 LeFrak HallCollege Park

How to deal with geometric distortion is an open problem when using the massive amount of satellite images at a national or global scale, especially for multi-temporal image analysis. In this paper, an algorithm is proposed to automatically rectify the geometric distortion of time-series CCD multi- spectral data of small constellation for environmental and disaster mitigation （HJ-1A/B） which was launched by China in 2008. In this algorithm, the area-based matching method was used to automatically search tie points firstly, and then the polynomial function was introduced to correct the systematic errors caused by the satellite motion along the roll, pitch and yaw direction. The improved orthorectification method was finally used to correct pixel displacement caused by off-nadir viewing of topography, which are random errors in the images and cannot be corrected by the polynomial equation. Nine scenes of level 2 HJ CCD images from one path/row were taken as the warp images to test the algorithm. The test result showed that the overall accuracy of the proposed algorithm was within 2 pixels （the average residuals were 37.8 m, and standard deviations were 19.8 m）. The accuracies of 45.96% validation points （VPs） were within 1 pixel and 90.33% VPs were within 2 pixels. The discussion showed that three main factors including the distortion patterns of HJ CCD images, pereent of cloud cover and the varying altitude of the satellite orbit may affect the search of tie points and the accuracy of results. Although the influence of varying altitude of the satellite orbits is less than the other factors, it is noted that detailed satellite altitude information should be given in the future to get a more precise result. The proposed algorithm should be an efficient tool for the geo-correction of HJ CCD multi-spectral images.

关键词： HJ time series images Auto-geocorrection Topographic correction Widecoverage CCD cameras

Validation of Global Land Surface Satellite (GLASS) Downward Shortwave Radiation Product in the Rugged Surface

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Journal of Mountain Science 2013年第5期10卷 812-823页

作者： JIN Hua-an li Ai-nong BIAN Jin-hu ZHANG Zheng-jian HUANG Cheng-quan li meng-xue Institute of Mountain Hazards and Environment Chinese Academy of Sciences Department of Geographical Sciences University of MarylandCollege Park

The downward shortwave radiation(DSR) is an essential parameter of land surface radiation budget and many land surface models that characterize hydrological,ecological and biogeochemical *** new Global LAnd Surface Satellite(GLASS) DSR datasets have been generated recently using multiple satellite data in *** study investigates the performances of direct comparison approach,which is mostly used for validation of surface insolation retrieved from satellite data over the plain area,and indirect comparison approach,which needs a fine resolution map of DSR as reference,for validation of GLASS DSR product in time-steps of 1 and 3 hours over three Chinese Ecosystem Research Network sites located in the rugged *** suggest that it probably has a large uncertainty to assess GLASS DSR product using the direct comparison method between GLASS surface insolation and field measurements over complex terrain,especially at *** 3,000 m station with root mean square error of 279.04 and 229.06 W/m2in time-steps of 1 and 3 hours,*** improvement for validation of GLASS DSR product in the rugged surface is suggested by generation of a fine resolution map of surface insolation and comparison of the aggregated fine resolution map with GLASS product in the rugged *** validation experience demonstrates that the GLASS DSR algorithm is satisfactory with determination coefficient of 0.83 and root mean square error of 81.91W/m2over three Chinese Ecosystem Research Network sites,although GLASS product overestimates DSR compared to the aggregated fine resolution map of surface insolation.

关键词： Downward shortwave radiation Validation Complex terrain

Oxidative Stress:Role in Acetamiprid-Induced Impairment of the Male Mice Reproductive System

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Agricultural Sciences in China 2011年第5期10卷 786-796页

作者： ZHANG Jiao-jiao WANG Yi XIANG Hai-yang li meng-xue li Wen-hao MA Kai-ge WANG Xian-zhong ZHANG Jia-hua College of Animal Science and Technology Southwest University Chongqing 400716 P.R.China

Acetamiprid has a wide range of influence on physiological functions in *** objective of this study was to examine the effect of acetamiprid on the reproductive function of male mice,and to study the role of oxidative stress in acetamiprid-induced damage to the *** adult Kunmin male mice （25-30 g） were divided into five groups （n=10 per group）,i.e.,control,blank,acetamiprid alone,acetamiprid and vitamin E,and vitamin E *** groups were treated for 35 *** results showed that acetamiprid significantly decreased the body weight and the weight of testosterone-responsive organs,such as the testis,epididymis,seminal vesicle,and ***,acetamiprid also significantly reduced the serum testosterone concentration,and decreased sperm count,viability,motility,and the intactness of the acrosome （P〈0.05 for each parameter）.The mice treated with acetamiprid had damaged seminiferous tubules and Leydig cells based on the histological structure of testes;there was degeneration of the mitochondria and endoplasmic reticulum of Leydig *** deleterious effects of acetamiprid may be mediated by increasing oxidative stress,as acetamiprid increased malondialdehyde and nitric oxide in the testes,reduced the activity of catalase,glutathione peroxidase,superoxide dismutase,and activated *** concentration of acetamiprid in the testes was lower than that in liver,so did the concentrations of liver function tests,including aspartate transaminase （AST）,alanine transaminase （ALT） and alkaline phosphatase （ALP）,which suggest that male reproductive function may be affected through the indirect action of its *** E significantly ameliorated the effects of *** conclude that acetamiprid damages male reproductive function through inducing oxidative stress in the testes.

关键词： acetamiprid oxidative stress reproductive function testis

Water distribution extracted from mining subsidence area using Kriging interpolation algorithm

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中国有色金属学会会刊：英文版 2011年第S3期21卷 723-726页

作者： DAI Hua-yang, REN li-yan, WANG meng, xue Hai-bing College of Geosicence and Surveying Engineering, China University of Mining & Technology, Beijing 100083, China College of Geosicence and Surveying Engineering China University of Mining & Technology Beijing 100083 China

By comprehensively analyzing the data of geology and mining, Kriging algorithm was introduced to analyze the thematic information of geological data, to rapidly extract mining parameters for predicting mining subsidence, and to effectively integrate geomorphology and predict information. As a result, the change information of water body is successfully detected from the prediction of surface subsidence due to mining activity. Analysis shows that the elevation of farmland in the west side of water body will be lower than ever, and the west part farmland will be submerged. However, there is no evidence for impacting the villages. All the information provides a reference for efficiently assessing environmental impact due to mining activity, which can help to govern the subsidence of the area reasonably.

关键词： Kriging interpolation water body mining subsidence prediction parameters data fusion

Targeting cholesterol trafficking to mitigate axonal degeneration in hereditary spastic paraplegia

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Neural Regeneration Research 2025年第5期20卷 1397-1398页

作者： Zhenyu Chen xue-Jun li Department of Biomedical Sciences University of Illinois College of Medicine RockfordRockfordILUSA Department of Bioengineering University of Illinois at ChicagoChicagoILUSA

Axonal degeneration underlies many debilitating diseases including hereditary spastic paraplegia(HSP),a genetically and clinically diverse group of disorders characterized by spasticity and weakness of the lower *** is one significant cause of chronic neurodisability due to the lack of effective treatments and a wide range of onset ages from early childhood to 70 years.

关键词： degeneration diseases hereditary

边界、权威与知识形式:移动短视频新闻认识论

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东北师大学报（哲学社会科学版） 2022年第1期 67-74页

作者：李学孟东北师范大学传媒科学学院吉林长春130117

认识论是一种关于知识的学说。自20世纪40年代帕克将新闻视作“知识的一种形式”以来,学者围绕着新闻认识论做过诸多探索,新闻认识论将知识实践界定为一种与惯例、规则相互联系的社会过程,它嵌入制度化的新闻实践中。移动短视频新闻认... 详细信息

认识论是一种关于知识的学说。自20世纪40年代帕克将新闻视作“知识的一种形式”以来,学者围绕着新闻认识论做过诸多探索,新闻认识论将知识实践界定为一种与惯例、规则相互联系的社会过程,它嵌入制度化的新闻实践中。移动短视频新闻认识论主要研究的是移动短视频新闻知识生产、知识形式以及公众对知识主张接受的理论,所以,此概念将边界、权威和知识形式三个概念勾连在一起。在边界工作中,移动短视频新闻的边界是模糊的,作为一种文化实践,它充满矛盾与歧义;在构建新闻权威方面,移动短视频新闻借助与其他行动者互动、场景化叙事和改变叙事主体等方式建构了自己的新闻权威;作为一种知识形式,移动短视频新闻生产知识的情感化是通过新闻源、叙事和共享三种方式形成的。

关键词：边界权威知识形式移动短视频新闻认识论

Atmospheric reductive catalytic fractionation of lignocellulose integrated with one-pot catalytic conversion of carbohydrate yielding valuable lignin monomers and platform chemicals from corn straw

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Green Energy & Environment 2025年第1期10卷 161-172页

作者： meng-Ying liu Zhe-Hui Zhang xue-Qi Wang Qian Sun Chen Zhang Yu li Zhuohua Sun Katalin Barta Feng Peng Tong-Qi Yuan State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing100083China Beijing Key Laboratory of lignocellulosic Chemistry Beijing Forestry UniversityBeijing100083China Department of Chemistry Organic and Bioorganic ChemistryUniversity of GrazHeinrichstrasse 28/II8010 GrazAustria

Developing a cost-effective and environmentally friendly process for the production of valuable chemicals from abundant herbal biomass receives great attentions in recent ***,taking advantage of the“lignin first”strategy,corn straw is converted to valuable chemicals including lignin monomers,furfural and 5-methoxymethylfurfural via a two steps *** key of this research lies in the development of a green and low-cost catalytic process utilizing magnetic Raney Ni catalyst and high boiling point ethylene *** utilization of neat ethylene glycol as the sole slovent under atmospheric conditions obviates the need for additional additives,thereby facilitating the entire process to be conducted in glass flasks and rendering it highly convenient for scaling *** the initial step,depolymerization of corn straw lignin resulted in a monomer yield of 18.1 wt%.Subsequently,in a dimethyl carbonate system,the carbohydrate component underwent complete conversion in a one-pot process,yielding furfural and 5-methoxymethylfurfural as the primary products with an impressive yield of 47.7%.

关键词： Atmospheric reductive catalytic fractionation Corn straw Ethylene glycol Raney Ni 5-Methoxymethylfurfural

Turbulent Agglomeration of Microparticles in a Cylinder Wake Flow Using LES-DEM:Focusing on the Effect of the Reynolds Number

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Journal of Thermal Science 2025年第1期34卷 34-49页

作者： WANG Shuang MU lin li xue XIE Jun DONG Ming School of Energy and Power Engineering Dalian University of Technology School of Optical Information and Energy Engineering Wuhan Institute of Technology School of Energy and Environment Shenyang Aerospace University

Turbulent agglomeration is viewed as a promising technology for enhancing fine particle removal *** better understand particle transport,agglomeration behaviors,and fluid-particle interactions,we numerically explored these phenomena under cylindrical vortex wake influence using a coupled large eddy simulation and discrete element method（LES-DEM） *** validity of the LES approach was verified by comparison with available direct numerical simulation（DNS） *** adopted the Johnson-Kendall-Roberts（JKR） contact model for particle-particle *** particle dispersion and agglomeration characteristics of particles with different diameters（dp=2-20 μm） in the laminar and transition of shear layer（TrSL） flow regimes were *** particles were concentrated at the vortex centers,while larger particles accumulated around the *** agglomeration efficiency exhibited an M-shaped profile spanwise（y-direction）.With increasing Reynolds number,the agglomeration efficiency and turbulence intensity *** particle agglomeration efficiency peaks at a certain Reynolds ***,at higher Reynolds numbers,reducing the residence time of particles in the flow field decreases the agglomeration efficiency.

关键词： discrete element method large eddy simulation microparticle particle agglomeration

A Multi-Objective Particle Swarm Optimization Algorithm Based on Decomposition and Multi-Selection Strategy

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Computers, Materials & Continua 2025年第1期82卷 997-1026页

作者： li Ma Cai Dai Xingsi xue Cheng Peng School of Computer Science Shaanxi Normal UniversityXi’an710119China Fujian Provincial Key Laboratory of Big Data Mining and Applications Fujian University of TechnologyFuzhou350118China Information Construction and Management Center and Institute of Artificial Intelligence and Educational New Productivity Ningxia Normal UniversityGuyuan756099China

The multi-objective particle swarm optimization algorithm(MOPSO)is widely used to solve multi-objective optimization *** the article,amulti-objective particle swarm optimization algorithmbased on decomposition and multi-selection strategy is proposed to improve the search ***,two update strategies based on decomposition are used to update the evolving population and external archive,***,a multiselection strategy is *** first strategy is for the subspace without a non-dominated *** the neighbor particles,the particle with the smallest penalty-based boundary intersection value is selected as the global optimal solution and the particle far away fromthe search particle and the global optimal solution is selected as the personal optimal solution to enhance global *** second strategy is for the subspace with a non-dominated *** the neighbor particles,two particles are randomly selected,one as the global optimal solution and the other as the personal optimal solution,to enhance local *** third strategy is for Pareto optimal front(PF)discontinuity,which is identified by the cumulative number of iterations of the subspace without non-dominated *** the subsequent iteration,a new probability distribution is used to select from the remaining subspaces to ***,an adaptive inertia weight update strategy based on the dominated degree is designed to further improve the search ***,the proposed algorithmis compared with fivemulti-objective particle swarm optimization algorithms and five multi-objective evolutionary algorithms on 22 test *** results show that the proposed algorithm has better performance.

关键词： Multi-objective optimization multi-objective particle swarm optimization decomposition multi-selection strategy