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Impact of discretization methods on the rough set-based classification of remotely sensed images

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International Journal of Digital Earth 2011年第4期4卷 330-346页

作者： y.ge F.Cao R.F.Duan State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences&Natural Resources ResearchChinese Academy of SciencesBeijing 100101P.R.China

In recent years,the rough set(RS)method has been in common use for remotesensing classification,which provides one of the techniques of information extraction for Digital *** discretization of remotely sensed data is an important data preprocessing approach in classical RS-based remote-sensing *** discretization methods can improve the adaptability of the classification rules and increase the accuracy of the remote-sensing *** assess the performance of discretization methods this article adopts three indicators,which are the compression capability indicator(CCI),consistency indicator(CI),and number of the cut points(NCP).An appropriate discretization method for the RS-based classification of a given remotely sensed image can be found by comparing the values of the three indicators and the classification accuracies of the discretized remotely sensed images obtained with the different discretization *** investigate the effectiveness of our method,this article applies three discretization methods of the Entropy/MDL,Naive,and SemiNaive to a TM image and three indicators for these discretization methods are then *** comparing the three indicators and the classification accuracies of the discretized remotely sensed images,it has been found that the SemiNaive method significantly reduces large quantities of data and also keeps satisfactory classification accuracy.

关键词： remote sensing classification rough set discretization image processing data mining

May early intervention with intravenous immunoglobulin pose a potentially successful treatment for Ebola virus infection?

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Science China(Life Sciences) 2015年第1期58卷 108-110页

作者： ge ying LI TaiSheng Department of Infectious Diseases Peking Union Medical College HospitalChinese Academy of Medical Science

Dear Editor,Ebola virus is negative-sense,single stranded RNA virus of the family *** their discovery in 1976,Ebola viruses have caused numerous outbreaks of severe hemorrhagic fevers in *** emergence of Ebola virus disease（EVD）in Guinea and its spread to urban centers in neighboring West African countries recently has caused international alarm.

关键词：病毒感染免疫球蛋白静脉注射埃博拉病毒治疗早期 RNA病毒城市中心

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CHARACTERIZATION OF Si_(1-x-y)ge_xC_y FILMS GROWN By ION IMPLANTATION AND SUBSEQUENT SOLID PHASE EPITAXy

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Acta Metallurgica Sinica(English Letters) 2002年第1期15卷 49-52页

作者： X.Q. Liu y.y. Wang W.J. Cheng J. Zhang S.y. Ma Department of Physics Lanzhou University Lanzhou 730000 China Department of Physics Lanzhou University Lanzhou 730000 China Department of physics Northwest Normal University Lanzhou 730030 China

Si1-x-ygexCy ternary alloy films were grown on monocrystalline silicon substrates by C+ ion implantation and subsequent solid phase epitaxy (SPE). Two-step annealing technique was employed in the SPE. The structure and electrical properties of the alloy films were determined using Fourier transform infrared spectroscopy and van der Pauw Hall measurements, respectively. With the optimization of two-step annealing technique for the implanted Si1-x-ygexCy layers, a certain amount of C atoms occupied substitutional sites and no SiC was formed.

关键词： Si1-x-ygexCu film ion implantation SPE

NUTRITION TRANSITION IN CHINA:THE GROWTH OF AFFLUENT DISEASES WITH THE ALLEVIATION OF UNDERNUTRITION

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NUTRITION TRANSITION IN CHINA:THE GROWTH OF AFFLUENT DISEASE...

Arsenic metabolism and arsenic-induced epigenetic modifications:the role and implication for arsenic-induced carcinogenesis

纽特健康糖（阿斯巴甜）在健康饮食中的应用专题研讨会

作者： Prof.X.S.Chen Prof.K.y.ge Institute of Nutrition and Food Hygiene Chinese Academy of Preventive Medicine #29 Nan Wei Road Beijing 100050 China

In the past four decades, China’s GNP Increased from 104 yuan per capita per year in 1952 to 1401 yuan in 1991, and the household real purchasing power increased more than 4 times in the same period. In conjunction with this rapid economic development, the living conditions and health status of Chinese inhabitants has improved measurably, particularly in recent years . Affluent diseases are emerging as a public health problem in the urban population while undernutrition is being alleviated in the poor rural *** the past four years, policies have been successfully executed by the government to promote food production. Food production has

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Arsenic metabolism and arsenic-induced epigenetic modificati...

APOPTOSIS AND TAXOL PRODUCTION IN SUSPENSION CULTURES OF Taxus ***

中国毒理学会第六届全国毒理学大会

作者： y ge Z GONG D GAILE JR OLSON REN Xue-feng Departments of Social & Preventive Medicine and Pharmacology & Toxicology The State University of New York

Consumption of drinking water contaminated with arsenic,a natural and carcinogenic metalloid,constitutes a global public health *** lack of knowledge regarding the carcinogenic mechanism of action of arsenic together with the wide spread contamination of drinking water with arsenic supports the designation of arsenic as one of the top-priority hazards throughout the *** of inorganic arsenic to methylated metabolites,in particular monomethylarsonous acid(MMAs),is thought to be a critical step in arsenic-induced carcinogenesis because the higher cytotoxicity and geno-toxicity of MMAthan inorganic and pentavalent methylated ***(+3 oxidation state) meth-yltransferase (AS3MT) has been long considered the major and only enzyme that is capable of biomethylating arsenic in *** recently identified N-6 adenine-specific DNA methyltransferase (N6AMT1) as a novel arsenic methyltransferase that is able to convert MMAto the less toxic dimethylarsonic acid(DMA),suggesting that N6AMT1 may play a significant role in determining susceptibility to arsenic toxicity and *** evidence has suggested that the carcinogenic activity of arsenic may lie in its ability to induce massive aberrant gene expression and deregulate cell growth,proliferation and differentiation through disrupting epigenetic *** recently showed that arsenic/ MMA? exposure to human cells led to a decreased level of histone acetylation globally,which was associated with an increased sensitivity to arsenic *** further demonstrate that prolonged low-level MMAexposure in human cells causes a systematic increase in the expression and activity of histone deacetylases(HDAC) with an associated reduction in histone *** of the HDAC inhibitor,suberoylanilide hydroxamic acid(SAHA),inhibits these MMA-mediated effects,leading to increase histone acetylation and prevention of MMA-induced malignant ***,we found that a

关键词： arsenic carcinogenesis arsenic metabolism N6AMT1 histone acetylation,microRNA

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化工学报 2000年第S1期51卷 43-46页

作者： yuan y. J., Ma L y., ge Z. Q.,and Miao Z. Q. Zeng A.P. (Department of biochemical engineering, Tianjin University, Tianjin 300072, China) (Biochemical Engineering Division, GBF,D-38124 Breunschweig, germany)

The hallmark of apoptosis, in suspension cultures of Taxus spp. cells induced by fungal extractive or by abiotic means, was studied by total DNA agarose gel electrophoresis and in situ end-labeling. The cleavage of nuclear DNA (nDNA) into oligonucleosomal fragments(DNA laddering) was a characteristic of apoptosis, which involved cell shrinkage, condensation of cytoplasm and tracheary elements differentiation. Terminal deoxynucleotidy transferase-mediated dUTP nick end in situ labeling (TUNEL) assay of Taxus spp. cells showed that fungal extractive or abiotic elicltors (Ce4+, Taxol, H2O2) induced TUNEL positive. Also, the increase of the apoptotic cell ratio was accompanied by the increase of secondary metabolites (especially Taxol). These results suggest that apoptosis may have some coincidence with biosynthesis of Taxol. The implication of apoptosis for the production of secondary metabolites in plant cell cultures is discussed.

关键词： apoptosis Taxol suspension culture Taxus spp.

The Measurement of Thermal Conductivities of Silica and Carbon Black Powders at Different Pressures by Thermal Conductivity Probe

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Journal of Thermal Science 1992年第2期1卷 75-79页

作者： X.G.Liang X.S.ge y.P.Chang G.Liu D.P.Wu Department of Engineering Thermophysics,University of Science and Technology of China,Hefei,Anhui 230026,China 1. Department of Engineering Thermophysics University of Science and Technology of China 230026 Hefei Anhui China

This investigation was done to study the gas filled powder insulation and thermal conductivity probe for the measurement of thermal conductivity of *** mathematical analysis showed that the heat capacity of the probe itself and the thermal resistance between the probe and powder must be *** authors developed a slender probe and measured the effective thermal conductivity of silica and carbon black powders under a variety of conditions.

关键词： thermal conductivity powders conductivity probe

FasL^+组织工程化猪软骨细胞的同种异体移植

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中国组织工程研究与临床康复 2007年第14期11卷 2605-2608页

作者：王树军张惠珍王颖金姝丁永霞葛瑜沈天伟葛海良上海交通大学医学院上海市免疫学研究所上海市200025

目的:探讨表达FasL的猪组织工程化软骨细胞在同种异体内的生长状况和免疫排斥反应。方法:实验于2002-09/2004-03在上海交通大学医学院,上海市免疫学研究所进行。①分离制备猪软骨细胞。②制备FasL+软骨细胞,构建重组pGCEN-FasL反转录病... 详细信息

目的:探讨表达FasL的猪组织工程化软骨细胞在同种异体内的生长状况和免疫排斥反应。方法:实验于2002-09/2004-03在上海交通大学医学院,上海市免疫学研究所进行。①分离制备猪软骨细胞。②制备FasL+软骨细胞,构建重组pGCEN-FasL反转录病毒载体,转染PA317细胞。经G418筛选获得分泌pGCEN-FasL病毒颗粒的PA317细胞克隆,选择高滴度的病毒液,感染猪软骨细胞。再经过G418筛选获得FasL+的软骨细胞克隆,扩增培养。③FACS检测FasL的表达,应用JAM试验测定FasL+的软骨细胞诱导Fas+的Jurkat细胞及活化的T细胞的凋亡率。同时制备转染pGCEN反转录病毒空载体的软骨细胞为对照。④取FasL+的软骨细胞与可注射性生物材料PluronicF127混合,注射于同种异体猪的腹壁皮下。在第4,5周取材,通过组织病理和免疫组织化学等方法,检测软骨细胞生长和免疫排斥反应。结果:①经转染的软骨细胞表面FasL的表达率为57%。②FasL+的软骨细胞具有明显诱导Fas+细胞和活化的同种异体T细胞的凋亡,最大的凋亡率分别为53.41%,30.38%(效/靶=10∶1),对照组分别为32.27%,13.16%(效/靶=10∶1)。③组织工程化猪软骨结节的结构与正常软骨组织基本一致,可见清晰的软骨凹陷和软骨膜,仅细胞排列较正常软骨略显混乱、不均匀现象。④免疫组织化学染色显示FasL+的组织工程化猪软骨结节的Ⅱ型胶原蛋白分布均匀,形状清楚,与正常软骨比较基本一致。⑤第5周的软骨细胞表面的FasL分子表达明显,周围的炎性细胞浸润相对较少。而对照组的软骨细胞周围可见到大量浸润的炎性细胞。结论:成功构建FasL+软骨细胞并有效表达,抑制免疫排斥反应,为建立同种异体软骨细胞移植的免疫耐受提供了实验依据。

关键词：软骨细胞抑制物排斥移植,同种猪组织工程

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明代奇正思想的发展与实践

孙子研究 2022年第1期 26-35页

作者：葛业文军事科学院战争研究院

“奇正”思想最早为孙子所提出,历代兵家对此均有论述。明人对奇正问题的认识,虽然总体上未能超越前人,但探讨的深度和力度却有所强化,在某些方面亦有一定程度的阐发。以俞大猷、戚继光为代表的将领还将奇正理论灵活运用于阵法当中,赋... 详细信息

“奇正”思想最早为孙子所提出,历代兵家对此均有论述。明人对奇正问题的认识,虽然总体上未能超越前人,但探讨的深度和力度却有所强化,在某些方面亦有一定程度的阐发。以俞大猷、戚继光为代表的将领还将奇正理论灵活运用于阵法当中,赋予其重要的实践价值,尤为值得肯定。

关键词：明代奇正思想发展实践