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中国科学院合肥物质科学岛团队在~2微米Tm:YAP激光性能提升方面取得进展（图）
激光 性能 晶体
2024/11/11
2024年8月28日，中国科学院合肥物质院安光所孙敦陆研究员课题组在2µm（微米）Tm:YAP激光性能提升方面取得新进展，团队采用单端泵浦四种不同类型的Tm:YAP晶体棒，并在键合凹端面Tm:YAP晶体棒中实现了最优的激光性能输出，相关成果以《采用热键合与凹端面提升LD端面泵浦Tm:YAP的激光性能》为题发表在在光学领域国际知名期刊Optics Express上。
中国科学院合肥物质科学研究院专利：抑制钬激光器(Cr,Tm,Ho∶YAG)凝结水汽的装置
中国科学院合肥物质科学研究院专利：抑制钬激光器(cr,tm,ho:yag)凝结水汽的装置
上海光机所首次提出TM偏振全介质光栅激光损伤阈值优越性（图）
激光装置 演化过程
2023/11/29
2023年11月7日，中国科学院上海光学精密机械研究所邵建达研究员、晋云霞研究员团队在TM偏振全介质脉冲压缩光栅领域取得突破性进展。相关成果以“TM polarization preferentially implemented in the next generation of high-intensity laser systems based on multilayer dielectric...
沃比医疗Avenir（TM）机械解脱弹簧圈获国家药监局注册批准
国家药监局注册批准 神经介入领域 颅内动脉瘤
2022/3/16
日前，专注于神经介入领域的医疗科技公司沃比医疗自主研发的Avenir™机械解脱弹簧圈获得国家药品监督管理局（NMPA）注册批准，这也是国内首个获得美国FDA、欧盟CE和日本PMDA认证的神经介入栓塞产品。Avenir机械解脱弹簧圈主要用于颅内动脉瘤和其他神经血管畸形(如动静脉畸形和动静脉瘘)的血管内栓塞，也可用于周围血管的动脉和静脉栓塞。
Defeating the Hart et al, Beullens-Blackburn, Kotov-Menshov-Ushakov, and Merz-Petit Attacks on WalnutDSA(TM)
WalnutDSA Group-Theoretic Cryptography Digital Signatures
2019/5/13
The Walnut Digital Signature Algorithm (WalnutDSA) brings together methods in group theory, representation theory, and number theory, to yield a public-key method that provides a means for messages to...
Defeating the Hart, Kim, Micheli, Pascuel-Perez, Petit, Quek Attack on WalnutDSA(TM)
public-key cryptography NIST
2019/2/27
The Walnut Digital Signature Algorithm (WalnutDSA) is a group-theoretic, public-key method that is part of the NIST Post-Quantum Cryptography standardization process. Prior to its submission to NIST, ...
基于Landsat TM/OLI影像的兖州煤田水域面积动态监测
采煤沉陷 改进的归一化水体指数 水域变化监测
2017/11/23
为揭示东部高潜水位矿区地表水体的时空演变规律，该文以兖州煤田为研究区，在比较改进归一化差异水体指数法、单波段阈值法、谱间关系法、K-T变换4种水体提取方法的精度及优缺点基础上，采用基于阈值分割的改进的归一化差异水体指数法提取了研究区1990－2014年的水体信息并分析了其时空变化特征。研究结果表明：从1990－2009年，兖州煤田地表水域面积增加了1 696.14 hm2，且2001－2005年水...
WalnutDSA(TM): A Quantum Resistant Group Theoretic Digital Signature Algorithm
Digital Signature E-Multiplication Braids
2017/2/20
In 2005 I. Anshel, M. Anshel, D. Goldfeld, and S. Lemieux introduced E-Multiplication, a quantum-resistant group-theoretic one-way function which can be used as a basis for many different cryptographi...
Hickory Hash(TM): Implementing an Instance of an Algebraic Eraser(TM) Hash Function on an MSP430 Microcontroller
Algebraic eraser group theoretic cryptography braid groups
2016/12/7
Recently a novel family of braid based cryptographic hash function candidates was published,
claiming to be suitable for use in low resource environments. It was shown that the new hash
function fam...
A PROBABILITY-BASED STATISTICAL METHOD TO EXTRACT WATER BODY OF TM IMAGES WITH MISSING INFORMATION
Probability statistics Water body extraction of TM images Missing information
2016/7/8
Water information cannot be accurately extracted using TM images because true information is lost in some images because of blocking clouds and missing data stripes, thereby water information cannot b...
ASSESSMENT OF FOUR TYPICAL TOPOGRAPHIC CORRECTIONS IN LANDSAT TM DATA FOR SNOW COVER AREAS
Landsat TM topographic correction Cosine correction C correction SCS correction SCS+C correction snow cover NDSI
2016/7/4
The accuracy of snow cover information extraction in remote-sensing images dependent on a variety of factors, especially in mountain area with complex terrain. This paper aims at analyzing the accurac...
COMPARATIVE ANALYSIS OF SEVERAL TYPICAL APPROACHES OF DESERTIFICATION DYNAMIC MONITORING BASED ON TM DATE
Image processing Detection Space photogrammetry Feature extraction Environmental monitoring
2016/1/3
Land desertification is one of the most important problems about the issue of environment, social and economy in the world. Vegetation category and quantity is a significant criterion to measure the e...
DETECTION OF CHANGES IN LAND DEGRADATION IN NORTHEAST CHINA FROM LANDSAT TM AND ASTER DATA
Remote Sensing Change Detection Land Degradation Thematic Accuracy Landsat ASTER China
2016/1/3
This study aims to determine the accuracy level at which different forms of land degradation can be mapped from medium-resolution satellite data, and to assess how accurately degraded land can be dete...
THE FUSION OF SPOT PANCHROMATIC AND TM MULITSPECTRAL IMAGE BASED ON MULTI-BAND BIORTHOGONAL WAVELET
Fusion Multi-band Biorthogonal Wavelet TM SPOT
2015/12/31
Remote sensing image fusion aims at integrating the information conveyed by data acquired with different spatial and spectral resolution from satellite and aerial platforms. Image fusion is a very imp...