Results 1 to 10 of about 809,111 (266)

New tool for the spatio-temporal variation analysis of seismic parameters [PDF]

Natural Hazards and Earth System Sciences, 2009
In this paper a new research tool called FastBEE (Fast Estimation of Expected Big Earthquake) is proposed, for the analysis of three basic seismic parameters, (the number of earthquakes <i>N</i>, b-value, and the seismic energy released in ...
G. A. Papadopoulos, I. Baskoutas
doaj   +4 more sources

Stability and boundedness In nonlinear and neutral difference equations using new variation of parameters formula and fixed point theory [PDF]

Cubo, 2019
In the case of nonlinear problems, whether in differential or difference equations, it is difficult and in some cases impossible to invert the problem and obtain a suitable mapping that can be effectively used in fixed point theory to qualitatively ...
Youssef N. Raffoul
doaj   +3 more sources

Boundedness and stability in nonlinear systems of differential equations using a modified variation of parameters formula

Cubo, 2023
In this research we introduce a new variation of parameters for systems of linear and nonlinear ordinary differential equations. We use known mathematical methods and techniques including Gronwall’s inequality and fixed point theory to obtain boundedness
Youssef N. Raffoul
doaj   +1 more source

Evaluation of a Recirculating Aquaculture System Research Facility Designed to Address Current Knowledge Needs in Atlantic Salmon Production

Frontiers in Animal Science, 2022
A better understanding of recirculating aquaculture system (RAS) biosecurity is crucial for the sustainable and ethical production of Atlantic salmon smolt and post-smolt in these systems.
Vasco C. Mota, Anja Striberny, Gerhardus C. Verstege, Gerhardus C. Verstege, Gareth F. Difford, Gareth F. Difford, Carlo C. Lazado   +6 more
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A new approach to the method of nonlinear variation of parameters [PDF]

Applied Mathematics and Computation, 1978
A nonlinear variation of parameters method for ordinary differential equations is obtained, which generalizes existing techniques. The versatility of the method is demonstrated by studying the asymptotic behavior of solutions of perturbed equations.
Lord, M. E., Mitchell, A. Richard
openaire   +2 more sources

The Magnitude of the Variation in Glycemia: A New Parameter for Risk Assessment in Acute Coronary Syndrome? [PDF]

Revista Española de Cardiología (English Edition), 2009
The aim was to evaluate the relationship between the magnitude of the variation in the level of glycemia during hospitalization and in-hospital and long-term mortality and postdischarge endpoints in two groups of patients with acute coronary syndrome: those with and those without a previous diagnosis of diabetes.The study included 1210 patients ...
Monteiro, S, Gonçalves, F, Monteiro, P, Freitas, M, Providência, LA   +4 more
openaire   +3 more sources

Kinetic Sensitivity of a New Lumbo-Pelvic Model to Variation in Segment Parameter Input [PDF]

Journal of Applied Biomechanics, 2013
This study aimed to assess variability in lumbo-pelvic forces and moments during a dynamic high-impact activity (cricket fast bowling) when calculated using different body segment parameters (BSPs). The first three BSPs were estimated using methods where the trunk was divided into segments according to nonspinal anatomical landmarks. The final approach
Crewe, H., Campbell, Amity, Elliott, B, Alderson, J.   +3 more
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TWENTY-ONE NEW LIGHT CURVES OF OGLE-TR-56b: NEW SYSTEM PARAMETERS AND LIMITS ON TIMING VARIATIONS [PDF]

The Astrophysical Journal, 2011
Although OGLE-TR-56b was the second transiting exoplanet discovered, only one light curve, observed in 2006, has been published besides the discovery data. We present twenty-one light curves of nineteen different transits observed between July 2003 and July 2009 with the Magellan Telescopes and Gemini South.
Adams, Elisabeth Rose, Lopes-Morales, M., Elliot, James L., Seager, Sara, Osip, David J., Holman, Matthew J., Winn, Joshua Nathan, Hoyer, S., Rojo, P.   +8 more
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Analysis of atomic-clock data to constrain variations of fundamental constants

New Journal of Physics, 2023
We present a new framework to study the time variation of fundamental constants in a model-independent way. Model independence implies more free parameters than assumed in previous studies.
Nathaniel Sherrill, Adam O Parsons, Charles F A Baynham, William Bowden, E Anne Curtis, Richard Hendricks, Ian R Hill, Richard Hobson, Helen S Margolis, Billy I Robertson, Marco Schioppo, Krzysztof Szymaniec, Alexandra Tofful, Jacob Tunesi, Rachel M Godun, Xavier Calmet   +15 more
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A new prestack three-parameter amplitude variation with offset inversion method [PDF]

Journal of Geophysics and Engineering, 2018
Prestack seismic inversion is an important method in reservoir prediction and fluid identification. In this paper, we develop a new strategy to carry out a prestack three-parameter AVO inversion to obtain P-wave velocity, S-wave velocity, and density.
Qi Lu, Chao Song, Cai Liu
openaire   +1 more source