695 research outputs found
Existence of positive solutions for non local p-Laplacian thermistor problems on time scales
We make use of the Guo-Krasnoselskii fixed point theorem on cones to prove existence of positive solutions to a non local p-Laplacian boundary value problem on time scales arising in many applications. © 2007 Victoria University. All rights reserved.CEOCFCTFEDER/POCTISFRH/BPD/20934/200
Noether's Theorem for Control Problems on Time Scales
We prove a generalization of Noether's theorem for optimal control problems
defined on time scales. Particularly, our results can be used for
discrete-time, quantum, and continuous-time optimal control problems. The
generalization involves a one-parameter family of maps which depend also on the
control and a Lagrangian which is invariant up to an addition of an exact delta
differential. We apply our results to some concrete optimal control problems on
an arbitrary time scale.Comment: This is a preprint of a paper whose final and definite form is
published in International Journal of Difference Equations ISSN 0973-6069,
Vol. 9 (2014), no. 1, 87--10
Optimal Control of Nonlocal Thermistor Equations
We are concerned with the optimal control problem of the well known nonlocal
thermistor problem, i.e., in studying the heat transfer in the resistor device
whose electrical conductivity is strongly dependent on the temperature.
Existence of an optimal control is proved. The optimality system consisting of
the state system coupled with adjoint equations is derived, together with a
characterization of the optimal control. Uniqueness of solution to the
optimality system, and therefore the uniqueness of the optimal control, is
established. The last part is devoted to numerical simulations.Comment: Submitted 21-March-2012; revised 11-June-2012; accepted 13-June-2012;
for publication in the International Journal of Contro
Holder's and Hardy's Two Dimensional Diamond-alpha Inequalities on Time Scales
We prove a two dimensional Holder and reverse-Holder inequality on time
scales via the diamond-alpha integral. Other integral inequalities are
established as well, which have as corollaries some recent proved Hardy-type
inequalities on time scales.Comment: Accepted for publication (October 21, 2009) in the journal "Annals of
the University of Craiova, Mathematics and Computer Science Series"
(http://inf.ucv.ro/~ami
Land Grant Application- Durham, Ammi (Freeport)
Land grant application submitted to the Maine Land Office for Ammi Durham for service in the Revolutionary War.https://digitalmaine.com/revolutionary_war_me_land_office/1286/thumbnail.jp
Existence and uniqueness of a positive solution to generalized nonlocal thermistor problems with fractional-order derivatives
In this work we study a generalized nonlocal thermistor problem with
fractional-order Riemann-Liouville derivative. Making use of fixed-point
theory, we obtain existence and uniqueness of a positive solution.Comment: Submitted 17-Jul-2011; revised 09-Oct-2011; accepted 21-Oct-2011; for
publication in the journal 'Differential Equations & Applications'
(http://dea.ele-math.com
Perceiving Mass in Mixed Reality through Pseudo-Haptic Rendering of Newton's Third Law
In mixed reality, real objects can be used to interact with virtual objects.
However, unlike in the real world, real objects do not encounter any opposite
reaction force when pushing against virtual objects. The lack of reaction force
during manipulation prevents users from perceiving the mass of virtual objects.
Although this could be addressed by equipping real objects with force-feedback
devices, such a solution remains complex and impractical.In this work, we
present a technique to produce an illusion of mass without any active
force-feedback mechanism. This is achieved by simulating the effects of this
reaction force in a purely visual way. A first study demonstrates that our
technique indeed allows users to differentiate light virtual objects from heavy
virtual objects. In addition, it shows that the illusion is immediately
effective, with no prior training. In a second study, we measure the lowest
mass difference (JND) that can be perceived with this technique. The
effectiveness and ease of implementation of our solution provides an
opportunity to enhance mixed reality interaction at no additional cost
Concert recording 2017-05-15
[Track 1]. Histoire du tango. I. Bordel 1900 [Track 2]. II. Café 1930 / Astor Piazzolla -- [Track 3]. Sonatine for flute and piano / Henry Dutelleux -- [Tracks 4-5]. Duo for flute and piano / Aaron Copland -- [Tracks 6-8]. Flute concerto in D minor/ C.P.E. Bach -- [Track 9]. Solo de Pajarillo / O. Acosta
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