Results 41 to 50 of about 1,723,588 (348)
On the Accuracy of the Semiclassical Trace Formula [PDF]
J. Phys. A 31 (1998) 6253-6277, 1998 The semiclassical trace formula provides the basic construction from which one derives the semiclassical approximation for the spectrum of quantum systems which are chaotic in the classical limit. When the dimensionality of the system increases, the mean level spacing decreases as $\hbar^d$, while the semiclassical approximation is commonly believed to
arxiv +1 more source
Three-dimensional measurement based on optimized circular fringe projection technique.
Optics Express, 2019 Circular fringe projection profilometry (CFPP) is a recently proposed optical three-dimensional (3D) measurement technique. Theoretically, its optimal measurement accuracy should precede that of the conventional fringe projection profilometry.
Chunwei Zhang +6 more
semanticscholar +1 more source
Discrepancies between the ultrasonographic and gross pathological size of papillary thyroid carcinomas [PDF]
Ultrasonography, 2016 Purpose: The goal of this study was to investigate the level of agreement between tumor sizes measured on ultrasonography (US) and in pathological specimens of papillary thyroid carcinomas (PTCs) and to identify the US characteristics contributing to ...
Soo Yeon Hahn +3 more
doaj +1 more source
, 2020 With ever-increasing demand for three-dimensional (3D) imaging and shape measurements in a variety of fields, measurement accuracy has become of vital importance to numerous scientific and engineering applications.
Hieu Nguyen +3 more
semanticscholar +1 more source
Accuracy of tooth‐implant impressions: Comparison of five different techniques
Clinical and Experimental Dental Research, 2023 Purpose To compare the accuracy of five different tooth‐implant impression techniques. Materials and Methods In this in vitro, experimental study, an acrylic model containing one bone‐level Straumann dental implant at the site of maxillary first molar ...
Amirhossein Fathi +3 more
doaj +1 more source
Microscopic Three-Dimensional Measurement Based on Telecentric Stereo and Speckle Projection Methods
Italian National Conference on Sensors, 2018 Three-dimensional (3D) measurement of microstructures has become increasingly important, and many microscopic measurement methods have been developed. For the dimension in several millimeters together with the accuracy at sub-pixel or sub-micron level ...
Kepeng Chen +4 more
semanticscholar +1 more source
Brazilian Journal of Oral Sciences, 2017 This study aimed to assess the dimensional accuracy of five commercial alginates verified in stone casts. Methods: Each alginate impression (Cavex ColorChange, Cavex Holland BV; Jeltrate Plus, Dentsply; Hydrogum, Zhermack; Kromopan 100, Lascod; Ezact ...
Marcus Vinicius Loureiro Bertolo +5 more
doaj +1 more source
European Journal of Vascular and Endovascular Surgery, 2013 Kim Bredahl +7 more
openalex +2 more sources
Optimizing the geometrical accuracy of curvilinear meshes [PDF]
, 2015 This paper presents a method to generate valid high order meshes with optimized geometrical accuracy. The high order meshing procedure starts with a linear mesh, that is subsequently curved without taking care of the validity of the high order elements.
arxiv +1 more source
High-dimensional Measurement Error Models for Lipschitz Loss [PDF]
arXiv, 2022 Recently emerging large-scale biomedical data pose exciting opportunities for scientific discoveries. However, the ultrahigh dimensionality and non-negligible measurement errors in the data may create difficulties in estimation. There are limited methods for high-dimensional covariates with measurement error, that usually require knowledge of the noise
arxiv