Results 41 to 50 of about 8,375 (165)

Displaced geostationary orbit design using hybrid sail propulsion [PDF]

, 2011
Because of an increase in the number of geostationary spacecraft and the limits imposed by east–west spacing requirements, the geostationary orbit is becoming congested. To increase its capacity, this paper proposes to create new geostationary slots by
Becerra V. M., Becerra V. M., Colin R. McInnes, Forward R. L., Heiligers J., James D. Biggs, Jeannette Heiligers, Jehn R., Leipold M., Macdonald M., Matteo Ceriotti, McKay R., Murphy D. M., Newton K., Yashko G. J.   +14 more
core   +1 more source

Estimates of solutions of impulsive parabolic equations and applications to the population dynamics [PDF]

, 1996
A theorem on estimates of solutions of impulsive parabolic equations by means of solutions of impulsive ordinary differential equations is proved.
Bainov, D., Minchev, Emil
core   +2 more sources

Mechanical systems subjected to generalized nonholonomic constraints

, 2000
We study mechanical systems subject to constraint functions that can be dependent at some points and independent at the rest. Such systems are modelled by means of generalized codistributions.
D. Martín de diego, J. Cortés, M. Deleón, Neimark J., S. Martínez, Vershik A. M.   +5 more
core   +1 more source

Discontinuous Molecular Dynamics for Semi-Flexible and Rigid Bodies

, 2006
A general framework for performing event-driven simulations of systems with semi-flexible or rigid bodies interacting under impulsive torques and forces is outlined. Two different approaches are presented. In the first, the dynamics and interaction rules
Abramowitz M., Allen M. P., Brent R. P., Erpenbeck J. J., Frenkel D., Galassi M., Goldstein H., Jacobi C. G. J., Jeremy Schofield, Knopp K., Lisandro Hernández de la Peña, Marsden J. E., Moshier S. L., Press W. H., Ramses van Zon, Sheldon B. Opps, Whittaker E. T., Whittaker E. T.   +17 more
core   +1 more source

Necessary conditions involving Lie brackets for impulsive optimal control problems

, 2019
We obtain higher order necessary conditions for a minimum of a Mayer optimal control problem connected with a nonlinear, control-affine system, where the controls range on an m-dimensional Euclidean space.
Aronna, M. Soledad, Motta, Monica, Rampazzo, Franco   +2 more
core   +1 more source

High-resolution simulations of the flow around an impulsively started cylinder using vortex methods [PDF]

, 1995
The development of a two-dimensional viscous incompressible flow generated from a circular cylinder impulsively started into rectilinear motion is studied computationally.
Koumoutsakos, Petros, Leonard, A.
core  

Stability and Controllability Analysis of Stochastic Fractional Differential Equations Under Integral Boundary Conditions Driven by Rosenblatt Process with Impulses

Fractal and Fractional
Differential equations are frequently used to mathematically describe many problems in real life, but they are always subject to intrinsic phenomena that are neglected and could influence how the model behaves.
Mohamed S. Algolam, Sadam Hussain, Bakri A. I. Younis, Osman Osman, Blgys Muflh, Khaled Aldwoah, Nidal Eljaneid   +6 more
doaj   +1 more source

Robust normalization and guaranteed cost control for a class of uncertain singular Markovian jump systems via hybrid impulsive control [PDF]

, 2013
This paper investigates the problem of robust normalization and guaranteed cost control for a class of uncertain singular Markovian jump systems. The uncertainties exhibit in both system matrices and transition rate matrix of the Markovian chain.
Abdelaziz, Aliyu, Boukas, Boukas, Boukas, Chen, Dai, Dong, Duan, Guan, Guan, Huang, Li, Liberzon, Liu, Liu, Liu, Liu, Liu, Ma, Mahmoud, Medina, Petersen, Ren, Ren, Shi, Wang, Wang, Wang, Wang, Wu, Xia, Xiong, Xu, Xu, Xu, Yang, Yao, Zhang, Zhang, Zhang   +40 more
core   +1 more source

Magnon squeezing in an antiferromagnet: reducing the spin noise below the standard quantum limit [PDF]

, 2003
At absolute zero temperature, thermal noise vanishes when a physical system is in its ground state, but quantum noise remains as a fundamental limit to the accuracy of experimental measurements.
Bragas, A. V., Lockwood, D. J., Merlin, R., Zhao, J.   +3 more
core   +3 more sources

Signatures of impulsive localized heating in the temperature distribution of multi-stranded coronal loops [PDF]

, 2009
We study the signatures of different coronal heating regimes on the differential emission measure (DEM) of multi-stranded coronal loops by means of hydrodynamic simulations.
A. C. Lanzafame, A. F. Lanza, Antiochos, Antiochos, Aschwanden, Aschwanden, Aschwanden, Cargill, Craig, D. Spadaro, DePontieu, Judge, Karpen, Karpen, Karpen, Klimchuk, Klimchuk, Klimchuk, Patsourakos, Patsourakos, Peter, R. Susino, Reale, Schmelz, Serio, Spadaro, Testa, Winebarger   +27 more
core   +1 more source