Results 31 to 40 of about 94,776 (290)

A novel 3-D jerk chaotic system with three quadratic nonlinearities and its adaptive control

Archives of Control Sciences, 2016
This paper announces an eight-term novel 3-D jerk chaotic system with three quadratic nonlinearities. The phase portraits of the novel jerk chaotic system are displayed and the qualitative properties of the jerk system are described.
Vaidyanathan Sundarapandian
doaj   +1 more source

A parametric reconstruction of the cosmological jerk from diverse observational data sets

, 2016
A parametric reconstruction of the jerk parameter, the third order derivative of the scale factor expressed in a dimensionless way, has been discussed. Observational constraints on the model parameters have been obtained by Maximum Likelihood Analysis of
Banerjee, Narayan, Mukherjee, Ankan
core   +1 more source

Exploring External Load Metrics in Team Handball: A Study of Europe’s Under-20 Male Championship

E-balonmano.com: Revista de Ciencias del Deporte
The objective assessment of external physical loads has become promising in better understanding players’ match loads and responses. However, there is a lack of consensus on the metrics used along with limited information on this topic in elite handball.
João Freitas, Luisa Estriga
doaj   +1 more source

Optimization of pocket machining strategy in HSM [PDF]

, 2011
Our two major concerns, which should be taken into consideration as soon as we start the selecting the machining parameters, are the minimization of the machining time and the maintaining of the high-speed machining machine in good state.
Baili, Maher, Bouaziz, Zoubeir, Dessein, Gilles, Msaddek, El Bechir   +3 more
core   +2 more sources

Bayesian Analysis and Constraints on Kinematic Models from Union SNIa

, 2009
The kinematic expansion history of the universe is investigated by using the 307 supernovae type Ia from the Union Compilation set. Three simple model parameterizations for the deceleration parameter (constant, linear and abrupt transition) and two ...
A. Shafieloo, A.C.C Guimarães, C. Cattoen, C. Shapiro, F.C. Carvalho, G. Steigman, H. Jeffreys, J.A.S Lima, J.A.S. Lima, J.A.S. Lima, J.V Cunha, M. Fairbairn, M. Visser, M.S. Turner, O. Elgaroy, R.A. Daly ., R.D. Blandford, S. Weinberg, Supernova Cosmology Project collaboration, Supernova Cosmology Project collaboration, Supernova Search Team collaboration, Supernova Search Team collaboration, WMAP collaboration   +22 more
core   +1 more source

Probing the cosmographic parameters to distinguish between dark energy and modified gravity models

, 2009
In this paper we investigate the deceleration, jerk and snap parameters to distinguish between the dark energy and modified gravity models by using high redshift gamma-ray bursts (GRBs) and supernovae (SNe).
Alam, Allen, Allen, Astier, Basilakos, Bennett, Bento, Bertolami, Caldwell, Caldwell, Capozziello, Capozziello, Capozziello, Carroll, Chevallier, Ciardi, Dai, Davis, Deffayet, Di Girolamo, Dvali, Eisenstein, F. Y. Wang, Firmani, Freedman, Freese, Friedmann, Ghirlanda, Gorini, Huterer, Ishak, Kamenshchik, Kodama, Kunz, Li, Liang, Liang, Liang, Linder, Linder, Maor, Peebles, Perlmutter, Polarski, Poplawski, Poplawski, Qi, Qi, Rapetti, Riess, Riess, Riess, Sahni, Schaefer, Shi Qi, Silva, Spergel, Spergel, Tegmark, Visser, Vollick, Wang, Wang, Wang, Wang, Weinberg, Weller, Wood-Vasey, Wright, Z. G. Dai   +69 more
core   +1 more source

A kinematical approach to dark energy studies [PDF]

, 2006
We present and employ a new kinematical approach to cosmological `dark energy' studies. We construct models in terms of the dimensionless second and third derivatives of the scale factor a(t) with respect to cosmic time t, namely the present-day value of
Alam, Allen, Allen, Allen, Armendariz-Picon, Armendariz-Picon, Astier, Bagla, Barreiro, Bento, Borgani, Cabre, Caldwell, Caldwell, Caldwell, Carroll, Carroll, Carroll, Chiba, Chiba, Cole, Copeland, Copeland, Copeland, Corasaniti, Croft, David Rapetti, Deffayet, Deffayet, Doran, Dvali, Eisenstein, Eke, Elgaroy, Ettori, Fosalba, Freedman, Gelman, Gong, Guo, Hoekstra, Hu, Jarvis, Jassal, Jeffreys, Kamenshchik, Kass, Kirkman, Knop, Lewis, Liddle, Linder, Maartens, Mather, Mena, Mukherjee, Mustafa A. Amin, Nesseris, Onemli, Perlmutter, Rapetti, Reiprich, Riess, Riess, Roger D. Blandford, Sahni, Schuecker, Schwarz, Seljak, Shapiro, Spergel, Steinhardt, Steven W. Allen, Tegmark, Upadhye, Van Waerbeke, Van Waerbeke, Verde, Viel, Vikman, Visser, Voevodkin, Vollick, Weller, Zhao, Zlatev   +85 more
core   +6 more sources

Life‐Threatening Bradycardia in Anti‐NMDA‐Receptor Encephalitis and a Novel Use for Permanent Pacing

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Pediatric anti‐NMDA receptor encephalitis (pNMDARE) is an autoantibody‐mediated disorder that can cause severe autonomic dysfunction, including symptomatic bradycardia and asystole. Dysautonomia can last for years, making it very challenging to manage.
Sarah Tucker, Abhijit Das, Andres Jimenez, Areeba Basit, Yike Jiang, Emily A. Smitherman, Heather Van Mater, Taylor Howard, Alexander J. Sandweiss, Kristen S. Fisher   +9 more
wiley   +1 more source

Disturbance observer-based HEV dynamic coordination control strategy from EV mode to engine-driving mode

Frontiers in Mechanical Engineering
To mitigate torque fluctuations arising from clutch engagement and multi-power-source coupling during the mode transition from electric vehicle (EV) mode to engine-driving mode in a single-axle parallel hybrid electric vehicle (SPHEV), this paper ...
Yao Fang, Chunlan Yang, Yanchun Wang
doaj   +1 more source

FPGA-Based Implementation of a New 3-D Multistable Chaotic Jerk System with Two Unstable Balance Points

Technologies, 2023
Mechanical jerk systems have applications in several areas, such as oscillators, microcontrollers, circuits, memristors, encryption, etc. This research manuscript reports a new 3-D chaotic jerk system with two unstable balance points.
Sundarapandian Vaidyanathan, Esteban Tlelo-Cuautle, Khaled Benkouider, Aceng Sambas, Brisbane Ovilla-Martínez   +4 more
doaj   +1 more source