Results 61 to 70 of about 2,406 (195)

Optimal control of a social epidemic model with media coverage

open access: yesJournal of Biological Dynamics, 2017
A new social epidemic model to depict alcoholism with media coverage is proposed in this paper. Some fundamental properties of the model including existence and positivity as well as boundedness of equilibria are investigated. Stability of all equilibria
Hai-Feng Huo   +3 more
doaj   +1 more source

A Dynamic Model for Fishery Resource with Reserve Area and Taxation

open access: yesJournal of Applied Mathematics, 2012
The present paper deals with a dynamic reaction model of a fishery. The dynamics of a fishery resource system in an aquatic environment consists of two zones: a free fishing zone and a reserve zone.
Hai-Feng Huo   +2 more
doaj   +1 more source

Analysis the brachistochronic motion of a mechanical system with nonlinear nonholonomic constraint [PDF]

open access: yesFME Transactions, 2014
This paper analyzes the problem of brachistochronic planar motion of a mechanical system with nonlinear nonholonomic constraint. The nonholonomic system is represented by two Chaplygin blades of negligible dimensions, which impose nonlinear constraint in
Radulović Radoslav D.   +4 more
doaj  

Advertising and production of a seasonal good for a heterogeneous market: from total segment separability to real media [PDF]

open access: yes
Market segmentation is a fundamental topic of marketing theory and practice. We bring some market segmentation concepts into the statement of an advertising and production problem for a seasonal product with Nerlove-Arrow's linear goodwill dynamics ...
Bruno Viscolani, Daniela Favaretto
core  

The attitude control of a satellite in an elliptic orbit [PDF]

open access: yes
Attitude control system for satellite in elliptical orbit calculated by linear equations and computer ...
Busch, R. A., Fluegge-Lotz, I.
core   +1 more source

Corporate tax rate policy and public and private employment [PDF]

open access: yes
Employment;Corporate ...
Gradus, R.H.J.M., Zeeuw, A.J. de
core   +1 more source

Optimal Harvest Control in a Singular Prey-Predator Fishery Model with Maturation Delay and Gestation Delay

open access: yesDiscrete Dynamics in Nature and Society, 2016
This paper presents a singular prey-predator fishery model, where maturation delay for prey and gestation delay for predator are considered. Fishing efforts are introduced to harvest prey and predator population, which are developed as control ...
Chao Liu, Longfei Yu, Qingling Zhang
doaj   +1 more source

Maneuver simulations of flexible spacecraft by solving TPBVP [PDF]

open access: yes
The optimal control of large angle rapid maneuvers and vibrations of a Shuttle mast reflector system is considered. The nonlinear equations of motion are formulated by using Lagrange's formula, with the mast modeled as a continuous beam.
Bainum, Peter M., Li, Feiyue
core   +1 more source

End-Point versus Point of Sale Levying of Plant Breeding Royalties: An Economic Analysis using Optimal Control Theory [PDF]

open access: yes
Intellectual property rights for commercial crops have become in- creasingly controversial as plant breeders have sought to protect their investment through licensing and royalties, and farmers, in particular ecologically-oriented farmers, have promoted ...
Beard, Rodney
core   +1 more source

Analytical control laws for interplanetary solar sail trajectories with constraints [PDF]

open access: yes, 2008
An indirect method is used to obtain an analytical control law for a spacecraft with a low-thrust propulsion system which is constituted by a solar sail coupled with a solar electric thruster. Constraints on the control inputs for such as the system need
McInnes, C.R., Uchiyama, Kenji
core  

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