73,974 research outputs found
Final report on the VEGINECO project
Vegetable farming systems in Europe, Final report on the VEGINECO project
Integrated and Ecological Crop Protection (I/ECP)
Manual on integrated and ecological crop protectio
On the solitons of the Chern-Simons-Higgs model
Several issues concerning the self-dual solutions of the Chern-Simons-Higgs
model are addressed. The topology of the configuration space of the model is
analysed when the space manifold is either the plane or an infinite cylinder.
We study the local structure of the moduli space of self-dual solitons in the
second case by means of an index computation. It is shown how to manage the
non-integer contribution to the heat-kernel supertrace due to the
non-compactness of the base space. A physical picture of the local coordinates
parametrizing the non-topological soliton moduli space arises .Comment: 27 pages, 3 figures, to appear in The European Physical Journal
Radiative cooler
A method and radiative cooling device for use in passively cooling spaces is described. It is applicable to any level of thermal radiation in vacuum and to high-intensity thermal radiation in non-vacuum environments. The device includes an enclosure nested in a multiplicity of thin, low-emittance, highly-reflective shields. The shields are suspended in a casing in mutual angular relation and having V-shaped spaces defined therebetween for redirecting, by reflection, toward the large openings of the V-shaped spaces, thermal radiation entering the sides of the shields, and emitted to the spaces, whereby successively reduced quantities of thermal radiation are reflected by the surfaces along substantially parallel paths extended through the V-shaped spaces to a common heat sink such as the cold thermal background of space
Radiological control procedures applicable to radioisotope thermoelectric generator SNAP-27. Volume 1 - Normal operations
Radiological control procedures applicable to transport, handling, and storage of the thermoelectric generator SNAP 27 prior to launch during normal condition
On the derivatives of generalized Gegenbauer polynomials
We prove some new formulae for the derivatives of the generalized Gegenbauer
polynomials associated to the Lie algebra .Comment: 3 pages, no figures; submitted to Theor. Math. Phy
Active Target Defense Differential Game with a Fast Defender
This paper addresses the active target defense differential game where an
Attacker missile pursues a Target aircraft. A Defender missile is fired by the
Target's wingman in order to intercept the Attacker before it reaches the
aircraft. Thus, a team is formed by the Target and the Defender which cooperate
to maximize the distance between the Target aircraft and the point where the
Attacker missile is intercepted by the Defender missile, while the Attacker
tries to minimize said distance. The results shown here extend previous work.
We consider here the case where the Defender is faster than the Attacker. The
solution to this differential game provides optimal heading angles for the
Target and the Defender team to maximize the terminal separation between Target
and Attacker and it also provides the optimal heading angle for the Attacker to
minimize the said distance.Comment: 9 pages, 8 figures. A shorter version of this paper will be presented
at the 2015 American Control Conferenc
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