Results 91 to 100 of about 1,629,828 (298)

Continuum Deformation of a Multiple Quadcopter Payload Delivery Team without Inter-Agent Communication

, 2017
This paper proposes continuum deformation as a strategy for controlling the collective motion of a multiple quadcopter system (MQS) carrying a common payload.
Atkins, Ella M., Rastgoftar, Hossein
core   +1 more source

Retractions in Rheumatology: Trends, Causes, and Implications for Research Integrity

Arthritis Care &Research, EarlyView.
Objective We aimed to describe the trends and main reasons for study retraction in rheumatology literature. Methods We reviewed the Retraction Watch database to identify retracted articles in rheumatology. We recorded the main study characteristics, authors’ countries, reasons for retraction, time from publication to retraction, and trends over time ...
Anna Maria Vettori, Michele Iudici
wiley   +1 more source

Pyrite alteration and neoformed magnetic minerals in the fault zone of the Chi‐Chi earthquake (Mw7.6, 1999): Evidence for frictional heating and co‐seismic fluids

Geochemistry, Geophysics, Geosystems, 2012
During an earthquake, physical and chemical transformations lead to alteration and formation of minerals in the gouge layer. Altered and neoformed minerals can be used as tracers of some earthquake processes.
Yu‐Min Chou, Sheng‐Rong Song, Charles Aubourg, Yen‐Fang Song, Anne‐Marie Boullier, Teh‐Quei Lee, Mark Evans, En‐Chao Yeh, Yi‐Ming Chen   +8 more
doaj   +1 more source

Radiative processes as a condensation phenomenon and the physical meaning of deformed canonical structures

, 2008
Working with well known models in $(2+1)D$ we discuss the physics behind the deformation of the canonical structure of these theories. A new deformation is constructed linking the massless scalar field theory with the self-dual theory.
Abreu, Alvarez-Gaume, Asorey, C. Wotzasek, Carmona, Carmona, Carroll, Deser, Deser, Deser, Deser, Dunne, F. Méndez, Gamboa, Guimaraes, Henneaux, J. Gamboa, Julia, L.S. Grigorio, M.S. Guimaraes, Nascimento, Quevedo, Redlich, Townsend, Wilczek   +24 more
core   +1 more source

Adaptable nonlinear bimode metamaterials with rigid bars, pivots, and actuators

, 2012
A large family of periodic planar non-linear bimode metamaterials are constructed from rigid bars and pivots. They are affine materials in the sense that their macroscopic deformations are only affine deformations: at large distances any deformation must
Milton, Graeme Walter
core   +1 more source

Evaluating a Pragmatic Strength Alternative for Frailty Measurement and Assessing Its Predictive Capacity Against Established Frailty Instruments in Rheumatoid Arthritis

Arthritis Care &Research, EarlyView.
Objective Frailty occurs prematurely in rheumatoid arthritis (RA) and is associated with poor health outcomes. We compared the performance of four frailty instruments, including a pragmatic alternative measure using chair sit‐to‐stand (STS), and evaluated their abilities to predict poor health outcomes.
Kylie E. Riggles, Hannah F. Brubeck, Adrienne D. Tanus, Courtney N. Loecker, Punyasha Roul, Bryant R. England, Elizabeth R. Wahl, James S. Andrews, Namrata Singh, Joshua F. Baker, Patricia P. Katz, Dolores M. Shoback, Jose M. Garcia, Ariela R. Orkaby, Katherine D. Wysham   +14 more
wiley   +1 more source

Contractibility of deformation spaces of G-trees

, 2005
Forester has defined spaces of simplicial tree actions for a finitely generated group, called deformation spaces. Culler and Vogtmann's Outer space is an example of a deformation space. Using ideas from Skora's proof of the contractibility of Outer space,
Bestvina, Bridson, Gromov, Guirardel, Guirardel, Matt Clay, McCullough   +6 more
core   +1 more source

Moderators of the Effects of Exercise and Manual Therapy for People With Knee and Hip Osteoarthritis: A Secondary Analysis of a Randomized Clinical Trial

Arthritis Care &Research, EarlyView.
Objective This study aimed to investigate potential moderators influencing the effects of manual therapy and exercise therapy on pain and functional outcomes in individuals with knee and/or hip osteoarthritis, using data from the MOA trial. This is a secondary analysis of data from the MOA trial that compares the clinical effectiveness of manual ...
Daniel Cury Ribeiro, Sarah E. Lamb, J. Haxby Abbott   +2 more
wiley   +1 more source

High Health Care Utilization Preceding Diagnosis With Juvenile Idiopathic Arthritis

Arthritis Care &Research, EarlyView.
Objective Although early diagnosis improves long‐term outcomes, patients with juvenile idiopathic arthritis (JIA) often experience prolonged, circuitous paths to diagnosis. To inform diagnostic improvement, we sought to characterize health care utilization in the year preceding diagnosis. Methods We identified 10,021 patients with an incident diagnosis
Anna Costello, Rui Xiao, Xuemei Zhang, Jahan Jazayeri, Irit R. Rasooly, Pamela F. Weiss   +5 more
wiley   +1 more source

Cognitions and questions regarding crustal deformation and location forecasts of strong earthquakes

Geodesy and Geodynamics, 2015
Using Global Positioning System(GPS) data to analyze the earthquake preparation characteristics of the Kunlun Ms8.1 and the Wenchuan Ms8.0 earthquakes, we review the main research developments of earthquake forecasting and the mechanisms of earthquake ...
Wenxin Wei, Zaisen Jiang, Yanqiang Wu
doaj   +1 more source