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Policy instruments attitudes and support for government responses against Covid‐19
Review of Policy Research, Volume 42, Issue 4, Page 982-1007, July 2025.Abstract An individual's political attitudes have been documented as the most important predictor of acceptance of government measures against the COVID‐19 pandemic. Their effect, however, is somewhat unclear and cannot be reduced to one dimension. In this article, we test whether general attitudes toward policy instruments might, together with left ...
Arnošt Veselý +2 more
wiley +1 more source
Eye-cell’s Segmentation and Its Elementary Microcosmic Visualization [PDF]
, 2005 医学可视化是科学计算可视化的一个最活跃的领域。它对医学教学、临床诊治、远程医疗等都有深远的意义。医学图像三维重建技术运用计算机图形学和图像处理技术将源于CT、MRI、显微组织切片等医学二维图像数据重建成三维图像，以直观的方式在屏幕上显示出来。可视化技术应用于显微摄影领域，使人类具有了观察三维微观世界的能力。本文根据显微镜下采集的彩色眼细胞序列切片图像的特点，采用相应算法对序列图像进行分割，并在此基础上应用体绘制和面绘制技术分别对分割后的眼细胞进行三维重建 ...
张海燕
core
Zhongguo shiyan zhenduanxue, 2009 目的探讨三维CT重建技术在发育不良髋臼全髋人工关节置换术术前假体优选设计、髋臼重建、髋臼假体的正确放置及手术操作的指导作用。方法先天性髋臼发育不良继发骨性关节炎行全髋关节置换患者28例32髋,男6例6髋,女22例26髋;年龄21-63岁,平均年龄47.9岁。CrowⅠ型7例（9髋）,CrowⅡ型9例（10髋）,CrowⅢ型6例（7髋）,CrowⅣ型4例（4髋）。全部病例进行髋臼及股骨中上段的三维CT扫描及重建,并选取同期PACS网络系统中CT扫描髋部结构完全正常数据作为对照研究 ...
秦彦国 +4 more
doaj
Surface rendering algorithm of tenuous vasculature in medical images [PDF]
, 2009 在医学图像处理中,常常需要提取出特定的组织或者结构,再以提取到的二值体数据为基础,对组织结构进行三维重建。传统的MArCHIng CubE(MC)算法在对微细结构进行三维重建时,可能会产生断裂现象,不能有效保持原始体数据的连通性。以血管体数据为例,针对医学图像中微细管道结构重建提出一种改进的MC算法,以保持重建后组织结构的连通性。In medical image processing,special tissues and structures are usually extracted as ...
夏勇兴, 王博亮, 程明
core
Semantic feature-based visual attention model for pedestrian detection [PDF]
, 2016 Objective Pedestrian detection under video surveillance systems has always been a hot topic in computer vision research. These systems are widely used in train stations, airports, large commercial plazas, and other public places.
Gong, Yuan +5 more
core +1 more source
Reconstruction of 3D Cornea From Slit Lamp Images [PDF]
, 2005 虚拟器官的建模与仿真是当前国际上研究的前沿课题。眼睛作为人体中一个极为精密且十分重要的器官，其建模与仿真的实现具有十分重要的意义。要建立能够正确模拟与仿真人眼的“虚拟眼”系统，首先要建立眼部结构三维形态模型。角膜是人眼的重要组成部分，角膜的特性对于眼疾病的诊断和治疗有着重要的意义。裂隙灯图像取自于活体眼前节数据,据此建立的角膜三维形态模型对于虚拟眼在实际中的应用具有重要意义。根据裂隙灯眼前节图像的特点,本文首先致力于设计一个较好的边缘提取、分割算法，从裂隙灯图像数据中分割、提取出角膜组织结构 ...
胡宜斌
core
Classification-based point cloud denoising and 3D reconstruction of roadways [PDF]
ObjectiveThe point cloud denoising and 3D reconstruction of roadways serve as a key step in the digital modeling and analysis of roadways. However, the conventional algorithm based on single filtering fails to effectively remove the noise at varying ...
Denghong CHEN +5 more
core +1 more source
A quantitative research based on CT three dimensional reconstruct of personalized hip prosthesis and porcine femoral canal fixed [PDF]
, 2014 目的基于CT三维重建个性化设计猪股骨髋关节假体与骨髓腔接触率的定量研究。方法选择猪股骨,拍摄实验前正侧位,双斜位片,再运用CT进行横断面扫描,获得CT数据后三维重建。基于CT三维重建数据,运用机器人磨削个性化假体,使其成为与髓腔完全匹配的定制假体。匹配后,拍摄实验后正侧位片,计算定制假体与髓腔接触的骨皮质或者骨松质的表面积以及接触率。结果通过计算,个性化假体近端表面与骨髓腔直接接触率为90.8%,与医疗机器人辅助扩髓组获得的假体表面与骨髓腔直接接触率相近 ...
丁杰 +7 more
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[Three-dimensional reconstruction of femur based on Laplace operator and statistical shape model]. [PDF]
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi, 2023 Zhang Z, Zhang X, Zhang Y, Jin Z.
europepmc +1 more source
Gaoya dianqi, 2019 减速机是高压开关操动机构的重要传动部件,其内部传动齿轮的强度设计至关重要。文中以高压开关操动机构用减速机中的传动齿轮为研究对象,首先建立其齿面数学模型,并根据建立的数学模型求取一对啮合齿轮副的齿面点集;将齿面点集导入SolidWorks软件中建立齿轮副的三维实体模型;并将建立的三维实体模型导入Ansys软件进行有限元仿真分析（FEA）,分析齿轮副最大接触应力与最大弯曲应力的发生位置,根据强度分析结果指导后续的齿轮优化设计。文中的研究成果为操动机构设计提供理论支撑。
何大伟 +6 more
doaj