Results 41 to 50 of about 10,853 (164)
Zhongguo shiyan zhenduanxue, 2011 目的利用mimics重建股骨的三维图像,通过模拟膝关节置换术来确定解剖轴线机械轴线来测量股骨外翻角的一种方法。方法利用吉林大学白求恩第三医院住院患者下肢CTA扫描的扫描数据（35岁男膝关节无疾病、无畸形的成年人）。通过使用mimics软件对其CT图像进行二维阈值分割及切割、数据填充等预处理,获得三维股骨模型,并在二维横断面上找到髓内定位杆的入针点,于此点向股骨近端做一直径为4 mm长度为200 mm的圆柱,通过调整圆柱的方向,找到髓内定位杆的最佳位置,可得出进针点及股骨近端该圆柱的中心的三维坐标 ...
肖建林 +7 more
doaj
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Although magnetic carbon materials possess significant potential in the field of electromagnetic wave absorption (EWA) due to the synergistic effect of multiple attenuation mechanisms, the currently reported magnetic carbon EWA materials face some challenges, such as high cost, low yield, and easy agglomeration of the magnetic component ...
Bo Jiang +9 more
wiley +1 more source
3D Reconstruction of the Macula Lutea Based on Optical Coherence Tomography Images [PDF]
, 2007 虚拟器官的建模与仿真是当前国际上生物医学工程领域研究的前沿课题。眼睛作为人体最重要的器官之一，其建模与仿真系统的实现具有十分重大的科学意义和实用价值。眼底对人的眼睛是非常重要的，其中黄斑的形态对临床眼科诊疗有着重要的意义。OCT是眼底检查最新的工具之一，OCT眼底图像取自于活体数据,据此建立的眼底黄斑三维形态模型对于虚拟眼在实际中的应用具有重要意义，同时也为实现三维OCT眼底临床诊断技术进行了前期探索。根据OCT眼底黄斑部图像序列的特点，本文首先采用相应的算法对OCT眼底黄斑部图像进行分割、配准 ...
蔡海萍
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Primitive-based 3D Abstraction Method for Spacecraft ISAR Images [PDF]
Inverse Synthetic Aperture Radar (ISAR) images of spacecraft are composed of discrete scatterers that exhibit weak texture, high dynamics, and discontinuity.
Canyu WANG +3 more
core +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Vanadium oxides are deemed competitive cathode candidates for aqueous zinc‐ion batteries (AZIBs), benefited from their high theoretical capacity and multiple crystalline structures. However, the sluggish reaction kinetics, poor reversibility, and high solubility have hindered the practical application.
Xiaoyu Fan +7 more
wiley +1 more source
The Three-dimensional Reconstruction of Femur and Finite-Element Analysis of Hip Joint Replacement [PDF]
, 2009 有限元法在生物医学工程领域的应用，带来了人类医疗技术的革命。而由于病变、事故导致髋关节功能丧失，给患者带来了很大的不便。在人工髋关节置换中，置换重建的成功不仅取决于外科手术，更主要受到假体设计的影响，合理的假体设计是远期关节置换成功的重要因素。假体的几何形状和材料性质决定着假体和股骨的应力状况。定制型人工股骨假体可以提高与骨髓腔的匹配程度，因此能更好的适应人体内部的生物力学环境，消除对正常股骨不合理应力的破坏，减少应力遮挡，从而延长了股骨假体的使用寿命，减少远期假体松动几率 ...
巩慧明
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Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Lithium‐sulfur batteries (LSBs) face sluggish sulfur reduction reaction kinetics and severe polysulfide shuttling issues, which significantly limit their performance. In this work, a multifunctional separator with a 3D porous framework featuring confined pore structures and selective adsorption capability is constructed to address these ...
Mengchen Zhang +12 more
wiley +1 more source
The Research of Three-dimensional Visualization of Liver Pipeline Structure in Medical Image Processing [PDF]
, 2011 肝内管道系统是一个相互间联系紧密并且解剖结构复杂多变的多层次的结构整体。正是这种复杂的管道系统及其生理和病理变异，决定了肝脏外科手术的难度。 移动立方体（MC）算法是三维重建的一种经典算法。本文针对MC算法所存在的算法效率低下等缺点分析其根本原因，提出了一种基于6邻面的表面追踪算法来对该算法的运行效率进行改进，并实现肝脏门静脉的三维可视化。实验结果表明，改进的MC方法在保证三维重建效果的前提下，算法的效率得到了明显的提高。 MC算法重建出的血管的表面比较粗糙，本文提出了一种几何模拟的血管三维可视化方法 ...
赵单丹
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International Journal of Urban and Regional Research, Volume 50, Issue 1, Page 191-220, January 2026.Abstract Henry George advocated for capturing land value increases for public ends. The active approach of public authorities organizing and financing land development can help capture higher land value increases, as Hartman and Spit indicate. However, this approach hardly happens in developing countries, where the coalition of private developers and ...
Nannan Xu
wiley +1 more source
Design and Implementation of Face Recognition System Based on OpenCV and JavaCV [PDF]
, 2016 随着计算机和互联网的不断发展，在人工智能领域思想理论取得了一系列的发展，作为人工智能领域中发展较为突出的人脸识别技术取得了较为快速的发展。随着国家经济急速的发展，在社会各个领域对人脸识别技术的要求不断增加。人脸识别技术应用领域广泛，可以毫不夸张的说几乎可以覆盖整个社会的各个方面。上至国家信息安全，下到民生建设都有广泛的应用领域。现如今的生活中主要使用输入密码、插卡、获取口令等方式来保护个人信息和财产安全，这些传统的方法具有安全性低、易忘、易丢等缺点。随着技术的发展这些传统验证方式受到新技术的挑战 ...
江桥
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