7,771 research outputs found
A Model of Producer Incentives for Livestock Disease Management
We examine the management of livestock diseases from the producers' perspective, incorporating information and incentive asymmetries between producers and regulators. Using a dynamic model, we examine responses to different policy options including indemnity payments, subsidies to report at-risk animals, monitoring, and regulatory approaches to decreasing infection risks when perverse incentives and multiple policies interact. This conceptual analysis illustrates the importance of designing efficient combinations of regulatory and incentive-based policies.livestock disease, asymmetric information, reporting, indemnities, risk management, Livestock Production/Industries, C61, D82, Q12, Q18, Q28,
An Imaging Polarimeter(IMPOL) for multi-wavelength observations
Taking advantage of the advances in array detector technology, an imaging
polarimeter (IMPOL) has been constructed for measuring linear polarization in
the wavelength band from 400-800 nm. It makes use of a Wollaston prism as the
analyser to measure simultaneously the two orthogonal polarization components
that define a Stoke's parameter. An achromatic half-wave plate is used to
rotate the plane of polarization with respect to the axis of the analyser so
that the second Stoke's parameter also can be determined. With a field of view
correponding to about 30x30 sq. mm for a 1.2 m, f/13 telescope, a sensitive,
liquid-nitrogen cooled CCD camera as the detector and a built-in acquisition
and guidance unit, the instrument can be used for studying stellar fields or
extended objects with an angular resolution close to 2 arcsec. The instrumental
polarization is less than 0.05% and the accuracies of measurement are primarily
limited by photon noise for typical observations.Comment: 10 pages including 5 embedded figures; submitted to Astronomy and
Astrophysics Supplement Series; available on request to A. N. Ramaprakash
([email protected] or [email protected]); quote report n
Places where Women's Rights are denied in Tholkappiyam
Tholkappiyam is one of the fundamental reasons why the Tamil language stands high today. Tholkappiyam, the oldest, most unique, and the older books that originated in Tamil are the foremost of all the rare books of Tamil. There are so many messages in Tholkappiyam that it can be said that there are no principles that are not there. Tholkappiyam allows us to study contemporary linguistics and talk about literature. The fact that Tholkappiyam also accommodates various literary principles such as Pillai Tamil, folk literature, drama, travel literature, geographical theories, morphology, aesthetics, sociology, science, botany, etc., speaks volumes about the importance of Tholkappiyam to the world. Is there a version of feminist news within the Tholkappiyam? Tolkappian lovers may think that it is wrong to see that. However, Tholkappiyam's uniqueness is that tholkappiyam gives space to carry out research using modern theory. The fact that the fields of study in Tholkappiyam are incalculable is perfectly clear, as a hill in a plain. This article also explores whether the rights of the women who lived in the time of the Tolkappians have been taken away and how should women understand the Tolkappian text. It is certain that this article will look at the methods in which women's rights are recorded in the Tholkappiyam and their cause from the point of view of women
Generalized Solutions for Quantum Mechanical Oscillator on K\"{a}hler Conifold
We study the possible generalized boundary conditions and the corresponding
solutions for the quantum mechanical oscillator model on K\"{a}hler conifold.
We perform it by self-adjoint extension of the the initial domain of the
effective radial Hamiltonian. Remarkable effect of this generalized boundary
condition is that at certain boundary condition the orbital angular momentum
degeneracy is restored! We also recover the known spectrum in our formulation,
which of course correspond to some other boundary condition.Comment: 7 pages, latex, no figur
Electron transport in carbon nanotube-metal systems: contact effects
Carbon nanotubes (CNT) have a very large application potential in the rapid
developing field of molecular electronics. Infinite single-wall metallic CNTs
have theoretically a conductance of 4e2/h because of the two electronic bands
crossing the Fermi level. For finite size CNTs experiments have shown that
other values are also possible, indicating a very strong influence of the
contacts. We study electron transport in single- and double-wall CNTs contacted
to metallic electrodes within the Landauer formalism combined with Green
function techniques. We show that the symmetry of the contact region may lead
to blocking of a transport channel. In the case of double-wall CNTs with both
inner and outer shells being metallic, non-diagonal self energy contributions
from the electrodes may induce channel mixing, precluding a simple addition of
the individual shell conductances
Coupling between a dark and a bright eigenmode in a terahertz metamaterial
Terahertz time domain spectroscopy and rigorous simulations are used to probe
the coupling between a dark and a bright plasmonic eigenmode in a metamaterial
with broken symmetry. The metamaterial consists of two closely spaced split
ring resonators that have their gaps in non-identical positions within the
ring. For normal incidence and a fixed polarization both lowest order
eigenmodes of the split ring resonators can be excited; although one of them
has to be regarded as dark since coupling is prohibited because of symmetry
constraints. Emphasis in this work is put on a systematic evaluation of the
coupling effects depending on a spectral tuning of both resonances
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