Results 41 to 50 of about 363,653 (297)

Geometrical Consistency Modeling on B-Spline Parameter Domain for 3D Face Reconstruction From Limited Number of Wild Images

Frontiers in Neurorobotics, 2021
A number of methods have been proposed for face reconstruction from single/multiple image(s). However, it is still a challenge to do reconstruction for limited number of wild images, in which there exists complex different imaging conditions, various ...
Weilong Peng, Yong Su, Keke Tang, Chao Xu, Zhiyong Feng, Meie Fang   +5 more
doaj   +1 more source

Geometric Error Modeling of a Super-size Floor Type Boring Machine [PDF]

, 2012
Volumetric error analysis of a super-size floor type boring machine is conducted through geometric error modeling of the machine tool. Thermal deformation errors of the joint and shape elements are included in the model.
���������
core  

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Geometric and Thermal-Induced Errors Prediction for Active Error Compensation in Machine Tools

Journal of Experimental and Theoretical Analyses
In this paper, an integrated geometric and thermal-induced errors prediction approach for active error compensation in machine tools is proposed and evaluated.
Walid Chaaibi, Abderrazak El Ouafi, Narges Omidi   +2 more
doaj   +1 more source

Algorithms for fitting cylindrical objects to sparse range point clouds for rapid workspace modeling [PDF]

, 2003
Current methods for construction site modeling employ large, expensive laser range scanners that produce dense range point clouds of a scene from different perspectives.
Bosché, Frédéric, Haas, Carl T., Kwon, Soon-Wook, Liapi, Katherine A.   +3 more
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Dual Numbers Approach in Multiaxis Machines Error Modeling

Journal of Applied Mathematics, 2014
Multiaxis machines error modeling is set in the context of modern differential geometry and linear algebra. We apply special classes of matrices over dual numbers and propose a generalization of such concept by means of general Weil algebras.
Jaroslav Hrdina, Petr Vašík
doaj   +1 more source

An Error Analysis of the Geometric Baade-Wesselink Method

, 2003
We derive an analytic solution for the minimization problem in the geometric Baade-Wesselink method. This solution allows deriving the distance and mean radius of a pulsating star by fitting its velocity curve and angular diameter measured ...
Bersier D., Bersier D., Claret A., Dimitar D. Sasselov, Feast M. W., Fernley J., Laney C. D., Margarita Karovska, Massimo Marengo, Mayly Sanchez, Meylan G., Ripepi V., Wesselink A.   +12 more
core   +2 more sources

LDAcoop: Integrating non‐linear population dynamics into the analysis of clonogenic growth in vitro

Molecular Oncology, EarlyView.
Limiting dilution assays (LDAs) quantify clonogenic growth by seeding serial dilutions of cells and scoring wells for colony formation. The fraction of negative wells is plotted against cells seeded and analyzed using the non‐linear modeling of LDAcoop.
Nikko Brix, Daniel Samaga, Katharina Gehr, Benedek Dankó, Mohamed Schumann, Guido Drexler, Ahmed Alnatsha, Georg Beyer, Ujjwal Mahajan, Martin Selmansberger, Julia Mayerle, Claus Belka, Horst Zitzelsberger, Kirsten Lauber   +13 more
wiley   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source