Results 91 to 100 of about 98,119 (245)

Euler-Lagrange equations for composition functionals in calculus of variations on time scales

open access: yes, 2010
In this paper we consider the problem of the calculus of variations for a functional which is the composition of a certain scalar function $H$ with the delta integral of a vector valued field $f$, i.e., of the form $H(\int_{a}^{b}f(t,x^{\sigma}(t),x ...
A. B. Malinowska   +28 more
core   +1 more source

Metalens Array for Complex‐Valued Optical Discrete Fourier Transform

open access: yesAdvanced Optical Materials, Volume 14, Issue 3, 19 January 2026.
A single‐layer metalens‐array device performs complex‐to‐complex discrete Fourier transforms (DFTs) optically with O(N) digital time complexity. Integrated interferometric phase retrieval and error mitigation scheme enables accurate, compact, and low‐power optical computing. The approach provides a versatile framework for implementing arbitrary complex‐
Randy Stefan Tanuwijaya   +6 more
wiley   +1 more source

PROVINCIALISING BERLIN IN MENSCHEN IM HOTEL

open access: yesGerman Life and Letters, Volume 79, Issue 1, Page 57-74, January 2026.
ABSTRACT In this article, I take the peculiar source of Vicki Baum's Menschen im Hotel (1929) in a Southern Moravian town as a starting point to reveal the ways in which the hierarchies between metropolis and province are negotiated and complicated by the novel.
Meindert Peters
wiley   +1 more source

Neutralizing antibodies in cats infected with feline immunodeficiency virus. [PDF]

open access: yes, 1993
Sera from cats experimentally infected with five isolates of feline immunodeficiency virus (FIV) from various geographical regions and from FIV enzyme-linked immunosorbent assay-seropositive field cats from four European countries neutralized the ...
Baldinotti, F.   +6 more
core  

Serological prevalence of FeLV and FIV in cats in Peninsular Malaysia. [PDF]

open access: yes, 2011
Feline Leukemia (Fel.V) and Feline Immunodeficiency Virus (FIV) are the two feline retroviruses that were studied in 65 client-owned cats from eight veterinary centres in selected areas throughout Peninsular Malaysia during a 4-week period.
Arshad, Siti Suri   +3 more
core  

Mapping Earth Analogs from Photometric Variability: Spin-Orbit Tomography for Planets in Inclined Orbits

open access: yes, 2012
Aiming at obtaining detailed information of surface environment of Earth analogs, Kawahara & Fujii (2011) proposed an inversion technique of annual scattered light curves named the spin-orbit tomography (SOT), which enables one to sketch a two ...
Borucki   +20 more
core   +1 more source

Caracterização filogenética de amostras do vírus da imunodeficiência felina (FIV) do Estado de São Paulo Phylogenetic characterization of feline immunodeficiency virus (FIV) isolates from the state of São Paulo

open access: yesPesquisa Veterinária Brasileira, 2007
O vírus da imunodeficiência felina (FIV) é um lentivírus que causa distúrbios imunológicos em gatos domésticos. Devido à alta variabilidade genética do FIV, já foram identificados cinco subtipos (A a E) e a diversidade dentro de cada subtipo é freqüente ...
Valéria M. Lara   +2 more
doaj   +1 more source

Identification of feline immunodeficiency virus subtype-B on St. Kitts, West Indies by quantitative PCR

open access: yesJournal of Infection in Developing Countries, 2011
Introduction: Although antibodies to the feline immunodeficiency virus (FIV) have been detected by SNAP assay in cats from St. Kitts, there have been no molecular studies to further confirm the infection and determine the FIV subtypes present ...
Patrick J Kelly   +6 more
doaj   +1 more source

Prevalentiestudie naar feliene immunodefiëntievirus en feliene leukosevirus bij straatkatten in Gent [PDF]

open access: yes, 2019
Feline immunodeficiency virus (FIV) and feline leucosis virus (FeLV) are two pathogens in cats that may have severe consequences on the general health of the infected animal, especially in the long term.
De Rooster, Hilde   +3 more
core   +1 more source

A General Backwards Calculus of Variations via Duality

open access: yes, 2010
We prove Euler-Lagrange and natural boundary necessary optimality conditions for problems of the calculus of variations which are given by a composition of nabla integrals on an arbitrary time scale.
A.B. Malinowska   +19 more
core   +1 more source

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