, 2008 图像无损压缩是指在没有任何图像损失的前提下，降低数据量，获得低比特流的图像数据表示。它主要应用于一些需要对图像做进一步处理、重复压缩与解压缩、图像的获取代价昂贵的领域，如指纹图像、遥感图像、医用图像处理等。针对高效、实时的图像无损压缩的要求，研究快速的图像无损压缩技术和算法有很重要的理论意义和实用价值。 本文主要对当今无损压缩的两个具有代表性的算法进行了研究，一个是基于自适应统计上下文模型的预测和变字长编码的LOCO-I算法，它是JPEG-LS标准的核心；另一个是基于整数小波变换(5/3和9/7-M ...
冯希
core
[Analysis of factors influencing tension blister formation on the skin at the dressing edges in patients undergoing negative pressure wound therapy]. [PDF]
Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za ZhiGuo HH, Ning T, Ma MM, Mei SW, Ruan XJ.
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[A study on three-dimensional reconstruction of coronary arteries and numerical simulation of fractional flow reserve based on deep learning]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za ZhiWei J, Wang L, Zhang W.
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, 2005 采用纳米压痕仪测量了Al2O3/SiCp复合材料中的热失配残余应力。根据研究材料的微结构和非均匀热残余应力分布特点,建立一压痕实验模型。在该模型中,实验材料被视为由若干含有单一SiC颗粒的Al2O3胞元构成,而热失配残余压应力均匀分布于胞元基体中。在考虑到浅压痕时材料表面粗糙和压头针尖曲率半径的影响的基础上测得的Al2O3 ...
凌中
core
[Self-designed experiment in instrumental analysis： online solid phase extraction-high performance liquid chromatography- post column derivatization for the determination of trace pesticide residues in vegetables]. [PDF]
Se PuLi Y +8 more
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Dianci bileiqi本研究探讨了采用分段压制技术，制备具有一定梯度结构的ZnO压敏电阻，旨在通过优化分段配方比例，调节电阻片在厚度方向上的显微结构，提高电阻片的抗大电流冲击能力。通过扫描电子显微镜观察了ZnO晶粒尺寸在外段和中段的分布，通过压敏电阻测试仪和冲击电流发生器分别测试了电阻片的压敏电压、非线性系数与10kA 8/20μs雷电波残压比、2ms方波电流通流能力和4/10μs最大冲击电流。实验结果表明，通过优化晶粒尺寸和能量分布，优化后的工艺不仅保持了良好的压敏电压和非线性系数，电阻片的整体性能得到了显著提升 ...
董建洪
doaj
[Application of biological age for cardiovascular risk prediction in a community-based Chinese cohort]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanLu M +9 more
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[An Improved Faster R-CNN Method for Wound Detection]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanZhang S +5 more
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[Comparison of effectiveness between endoscopic and microscopic anterior cervical discectomy and fusion]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiHuang C +9 more
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[Disease burden and risk factors of myocarditis among children and adolescents aged 0-19 years in China from 1990 to 2021 and projection of future disease burden trends]. [PDF]
Zhongguo Dang Dai Er Ke Za ZhiZhao LH, Zhang JX, Zhao ZZ, Wu W.
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