Results 41 to 50 of about 3,160 (157)

A Geometry for Multidimensional Integrable Systems [PDF]

open access: yes, 1996
A deformed differential calculus is developed based on an associative star-product. In two dimensions the Hamiltonian vector fields model the algebra of pseudo-differential operator, as used in the theory of integrable systems.
Strachan, I. A. B.
core   +2 more sources

Effects of a video-mediated student-centered learning environment on students’ understanding of plant pathology principles

open access: yesAnnals of Tropical Research, 2006
Working with the faculty of Plant Protection, a video-mediated learner-centered learning environment was designed, implemented, and evaluated in a PPrt 21 (Principles of Plant Protection) class.
Erik-Ray Matthew S. Palomar   +1 more
doaj   +1 more source

1 x M packet-switched router based on the PPM header address for all-optical WDM networks [PDF]

open access: yes, 2008
This paper presents an all-optical 1xM router architecture for simultaneous multiple-wavelength packet routing, without the need for wavelength conversion. The packet header address is based on the pulse position modulation (PPM) format, which allows the
Abd El Aziz, Ahmad   +4 more
core  

Wavepacket Dynamics, Quantum Reversibility and Random Matrix Theory

open access: yes, 2005
We introduce and analyze the physics of "driving reversal" experiments. These are prototype wavepacket dynamics scenarios probing quantum irreversibility.
Alhassid   +44 more
core   +2 more sources

A Comparative Case Study On Outreach And Impact Of The Ikhtiar Loan Scheme And The Development Programme For The Hard-Core Poor In Seberang Perai, Penang [PDF]

open access: yes, 2006
Program Pembangunan Rakyat Termiskin (PPRT) dan skim pinjaman ikhtiar, Amanah Ikhtiar Malaysia (AIM) The Development Programme for the Hard-core Poor (PPRT) and the Ikhtiar Loan Scheme (ILS) of the Amanah Ikhtiar Malaysia ...
Mahmud, Salma
core  

Parametric dependent Hamiltonians, wavefunctions, random-matrix-theory, and quantal-classical correspondence

open access: yes, 2000
We study a classically chaotic system which is described by a Hamiltonian $H(Q,P;x)$ where $(Q,P)$ are the canonical coordinates of a particle in a 2D well, and $x$ is a parameter. By changing $x$ we can deform the `shape' of the well.
Cohen, Doron, Kottos, Tsampikos
core   +1 more source

Parametric invariant Random Matrix Model and the emergence of multifractality

open access: yes, 2006
We propose a random matrix modeling for the parametric evolution of eigenstates. The model is inspired by a large class of quantized chaotic systems. Its unique feature is having parametric invariance while still possessing the non-perturbative crossover
B. L. Altshuler   +5 more
core   +1 more source

Estimating the burden of minor ailment consultations in general practices and emergency departments through retrospective review of routine data in North East Scotland [PDF]

open access: yes, 2015
Minor ailment attendances in general practices and emergency departments (EDs) place significant burden on health care ...
A. Blyth   +18 more
core   +3 more sources

Generalised divisor sums of binary forms over number fields [PDF]

open access: yes, 2016
Estimating averages of Dirichlet convolutions $1 \ast \chi$, for some real Dirichlet character $\chi$ of fixed modulus, over the sparse set of values of binary forms defined over $\mathbb{Z}$ has been the focus of extensive investigations in recent years,
Frei, Christopher, Sofos, Efthymios
core   +2 more sources

An ultrafast 1 x M all-optical WDM packet-switched router based on the PPM header address [PDF]

open access: yes, 2008
This paper presents an all-optical 1 x M WDM router architecture for packet routing at multiple wavelengths simultaneously, with no wavelength conversion modules.
A. Abd   +5 more
core   +1 more source

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