Results 51 to 60 of about 363,653 (297)

Error modeling and tolerance design of a parallel manipulator with full-circle rotation

Advances in Mechanical Engineering, 2016
A method for improving the accuracy of a parallel manipulator with full-circle rotation is systematically investigated in this work via kinematic analysis, error modeling, sensitivity analysis, and tolerance allocation. First, a kinematic analysis of the
Yanbing Ni, Cuiyan Shao, Biao Zhang, Wenxia Guo   +3 more
doaj   +1 more source

Finite geometric toy model of spacetime as an error correcting code [PDF]

Physical Review D, 2019
A finite geometric model of space-time (which we call the bulk) is shown to emerge as a set of error correcting codes. The bulk is encoding a set of messages located in a blow up of the Gibbons-Hoffman-Wootters (GHW) discrete phase space for $n$-qubits (which we call the boundary).
Lévay, Péter, Holweck, Frédéric
openaire   +2 more sources

Subspace procrustes analysis [PDF]

, 2016
Postprint (author's final ...
Angulo Bahón, Cecilio, De La Torre, Fernando, Escalera, Sergio, Igual, Laura, Perez-Sala, Xavier   +4 more
core   +2 more sources

Functional and Structural Evidence of Neurofluid Circuit Aberrations in Huntington Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Disrupted neurofluid regulation may contribute to neurodegeneration in Huntington disease (HD). Because neurofluid pathways influence waste clearance, inflammation, and the distribution of central nervous system (CNS)–delivered therapeutics, understanding their dysfunction is increasingly important as targeted treatments emerge.
Kilian Hett, Abigail Dubois, Melanie Leguizamon, Alexander Song, Paula Trujillo, Colin D. McKnight, Ciaran M. Considine, Manus J. Donahue, Daniel O. Claassen   +8 more
wiley   +1 more source

Geometric Error Modeling of Machine Tools Based on Screw Theory

Procedia Engineering, 2011
AbstractIn order to build an linear, high computational efficiency geometric error model for machine tools, a new error modeling method based on screw theory is presented. Geometrical error sources are expressed as error twists, and the integrated model is calculated as the sum of error twists.
Yu, Zhao, Tiemin, Li, Xiaoqiang, Tang
openaire   +1 more source

Power Spectrum Analysis of the 2dF QSO Sample Revisited

, 2004
We revisit the power spectrum analysis of the complete sample of the two degree field (2dF) QSO redshift (2QZ) survey, as a complementary test of the work by Outram et al. (2003).
Ballinger W. E., Kazuhiro Yamamoto, Matarrese S., Mo J., Suto Y.   +4 more
core   +2 more sources

Does Long‐Term Lower Extremity Strength Training in Adults With Knee Osteoarthritis and Varus Alignment Reduce Knee Joint Loading During Gait?

Arthritis Care &Research, EarlyView.
Objective We examined whether 18 months of strength training in individuals with knee varus alignment and medial tibiofemoral osteoarthritis (OA) reduced knee joint loads during walking compared to an attention control group. Methods This study was a secondary analysis of a randomized clinical trial that compared the effects of strength training to a ...
Stephen P. Messier, Matthew N. Vigliotti, Paige E. Rice, Brian Pietrosimone, Shannon L. Mihalko, Edward H. Ip, Richard F. Loeser, David J. Hunter, Ali Guermazi, Ryan Hill, Santiago Saldana, Kim L. Bennell, Paul DeVita   +12 more
wiley   +1 more source

Geometric error modeling and compensation for high precision composite optical measurement systems

Optics Express, 2023
Composite optical measurement systems are widely used in the field of precision measurement due to their combination of inspection with high accuracy, speed, wide range, real-time, and other advantages. Whereas errors are prevalent in measurements, in order to improve detection accuracy, the systems must be compensated for geometric errors in three ...
Jixiao Liu, Qingrong Chen, Jian Wang, Si Sun, Xi Zhang, Jialin Du, Jixin Jiang, Zongwei Tian, Siyang Yu, Wei Yan   +9 more
openaire   +2 more sources

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

A Comparison of Three Geometric Self-Calibration Methods for Range Cameras

Remote Sensing, 2011
Significant instrumental systematic errors are known to exist in data captured with range cameras using lock-in pixel technology. Because they are independent of the imaged object scene structure, these errors can be rigorously estimated in a self ...
Changjae Kim, Derek D. Lichti
doaj   +1 more source