Results 11 to 20 of about 570,517 (298)

Design of RC-active oscillators using composite amplifiers [PDF]

open access: yes, 1991
The design of composite opamp Wien-Bridge oscillators is systematically approached by using a general model including amplitude control issues. Two different design criteria are presented and their main features summarized.
Huertas Díaz, José Luis   +2 more
core   +1 more source

32. Österreichischer Bibliothekartag als Green Meeting

open access: yesMitteilungen der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare, 2019
Erstmals seit 15 Jahren findet der Österreichische Bibliothekartag, der seit 1950 abgehalten wird, wieder in Wien statt. Die voraussichtlich 1.000 TeilnehmerInnen treffen sich unter dem Motto „Offen(siv)e Bibliotheken. Neue Zugänge, neue Strukturen, neue
Pamela Stückler
doaj   +1 more source

Holographic confinement in inhomogenous backgrounds

open access: yes, 2016
As noted by Witten, compactifying a $d$-dimensional holographic CFT on an $S^1$ gives a class of $(d-1)$-dimensional confining theories with gravity duals. The prototypical bulk solution dual to the ground state is a double Wick rotation of the AdS$_{d+1}
Marolf, Donald, Wien, Jason
core   +1 more source

Letters from Strouhal to Hann

open access: yesMeteorologische Zeitschrift, 1992
Two letters of Vincenz Strouhal in Prague to Julius von Hann in Vienna are published here for the first time. The content refers to the nomination of Stanislav Hanzlik as an Associate Professor of Meteorology and Climatology at the University of Prague ...
P. Kahlig
doaj   +1 more source

Adiabatic corrections to holographic entanglement in thermofield doubles and confining ground states

open access: yes, 2016
We study entanglement in states of holographic CFTs defined by Euclidean path integrals over geometries with slowly varying metrics. In particular, our CFT spacetimes have $S^1$ fibers whose size $b$ varies along one direction ($x$) of an ${\mathbb R}^{d-
Marolf, Donald, Wien, Jason
core   +2 more sources

The Torus Operator in Holography

open access: yes, 2017
We consider the non-local operator ${\mathcal T}$ defined in 2-dimensional CFTs by the path integral over a torus with two punctures. Using the AdS/CFT correspondence, we study the spectrum and ground state of this operator in holographic such CFTs in ...
Marolf, Donald, Wien, Jason
core   +1 more source

The potential role of socio-hydrological models for participatory water governance in Burkina Faso [PDF]

open access: yes, 2020
Halting and reversing water quality degradation is a major global concern. The variety of needs and priorities placed on water resources make the issue of water pollution multifaceted and complex.
Barendrecht, Marlies   +2 more
core  

Correction of traditional incorrect oscillation formula for the Wien‐Bridge Oscillator

open access: yesIET Circuits, Devices and Systems, 2022
An incorrect mistake that the DC bias resistance cannot change the oscillation frequency exists for the traditional formula of the Wien‐Bridge oscillator.
Chung‐Cheng Chen, Yen‐Ting Chen
doaj   +1 more source

Eine Unternehmenssammlung als Readymade?

open access: yes21: Inquiries into Art, History, and the Visual, 2022
On the occasion of the 100th anniversary of Duchamp’s readymade, Bethan Huws conceived the exhibition On the Subject of Ready- Made or Using a Rembrandt as an Ironing Board on behalf of Daimler Contemporary Berlin.
Iris Wien
doaj   +1 more source

The Bulgarian monarchy: a politically motivated revision of a historical image in a post-socialist transitional society [PDF]

open access: yes, 2008
Book description: The relationship between states, societies, and individuals in Central and Eastern Europe has been characterised by periods of change and redefinition.
Wien, M.
core  

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