623 research outputs found
Schade als gevolg van een onrechtmatig besluit: vergoeding via het burgerlijk of het bestuursprocesrecht?
FDR Procesrecht en mediation -- ou
Be Your Own Curator with the CHIP Tour Wizard [html]
Web 2.0 enables increased access to the museum digital
collection. More and more, users will spend time preparing
their visits to the museums and reflecting on them after the
visits. In this context, the CHIP (Cultural Heritage
Information Personalization) project offers tools to the
users to be their own curator, e.g. planning a personalized
museum tour, discovering interesting artworks they want to
see in a 'virtual' or a 'real' tour and quickly finding their
ways in the museum. In this paper we present the new
additions to the CHIP tools, which target the above
functionality - a Web-based Tour Preparation Wizard and
an export of a personalized tour to an interactive Mobile
Guide used in the physical museum space. In addition, the
user interactions during a real museum visit are stored and
synchronized with the user model, which is maintained at
the museum Web site
Be Your Own Curator with the CHIP Tour Wizard [pdf]
Web 2.0 enables increased access to the museum digital
collection. More and more, users will spend time preparing
their visits to the museums and reflecting on them after the
visits. In this context, the CHIP (Cultural Heritage
Information Personalization) project offers tools to the
users to be their own curator, e.g. planning a personalized
museum tour, discovering interesting artworks they want to
see in a 'virtual' or a 'real' tour and quickly finding their
ways in the museum. In this paper we present the new
additions to the CHIP tools, which target the above
functionality - a Web-based Tour Preparation Wizard and
an export of a personalized tour to an interactive Mobile
Guide used in the physical museum space. In addition, the
user interactions during a real museum visit are stored and
synchronized with the user model, which is maintained at
the museum Web site
Theoretical study of dark resonances in micro-metric thin cells
We investigate theoretically dark resonance spectroscopy for a dilute atomic
vapor confined in a thin (micro-metric) cell. We identify the physical
parameters characterizing the spectra and study their influence. We focus on a
Hanle-type situation, with an optical irradiation under normal incidence and
resonant with the atomic transition. The dark resonance spectrum is predicted
to combine broad wings with a sharp maximum at line-center, that can be singled
out when detecting a derivative of the dark resonance spectrum. This narrow
signal derivative, shown to broaden only sub-linearly with the cell length, is
a signature of the contribution of atoms slow enough to fly between the cell
windows in a time as long as the characteristic ground state optical pumping
time. We suggest that this dark resonance spectroscopy in micro-metric thin
cells could be a suitable tool for probing the effective velocity distribution
in the thin cell arising from the atomic desorption processes, and notably to
identify the limiting factors affecting desorption under a grazing incidence.Comment: 12 pages, 11 figures theoretical articl
Multipole interaction between atoms and their photonic environment
Macroscopic field quantization is presented for a nondispersive photonic
dielectric environment, both in the absence and presence of guest atoms.
Starting with a minimal-coupling Lagrangian, a careful look at functional
derivatives shows how to obtain Maxwell's equations before and after choosing a
suitable gauge. A Hamiltonian is derived with a multipolar interaction between
the guest atoms and the electromagnetic field. Canonical variables and fields
are determined and in particular the field canonically conjugate to the vector
potential is identified by functional differentiation as minus the full
displacement field. An important result is that inside the dielectric a dipole
couples to a field that is neither the (transverse) electric nor the
macroscopic displacement field. The dielectric function is different from the
bulk dielectric function at the position of the dipole, so that local-field
effects must be taken into account.Comment: 17 pages, to be published in Physical Review
Методические подходы к оценке возможности реализации инновационных стратегий
Целью данной статьи является рассмотрение методических подходов к оценке возможности реализации инновационных стратегий
Ultrasound and microbubbles for the treatment of ocular diseases : From preclinical research towards clinical application
The unique anatomy of the eye and the presence of various biological barriers make efficacious ocular drug delivery challenging, particularly in the treatment of posterior eye diseases. This review focuses on the combination of ultrasound and microbubbles (USMB) as a minimally invasive method to improve the efficacy and targeting of ocular drug delivery. An extensive overview is given of the in vitro and in vivo studies investigating the mechanical effects of ultrasound-driven microbubbles aiming to: (i) temporarily disrupt the blood–retina barrier in order to enhance the delivery of systemically administered drugs into the eye, (ii) induce intracellular uptake of anticancer drugs and macromolecules and (iii) achieve targeted delivery of genes, for the treatment of ocular malignancies and degenerative diseases. Finally, the safety and tolerability aspects of USMB, essential for the translation of USMB to the clinic, are discussed.Peer reviewe
Spontaneous decay of an excited atom in an absorbing dielectric
Starting from the quantized version of Maxwell's equations for the
electromagnetic field in an arbitrary linear Kramers-Kronig dielectric,
spontaneous decay of the excited state of a two-level atom embedded in a
dispersive and absorbing medium is studied and the decay rate is calculated.
The calculations are performed for both the (Clausius-Mosotti) virtual cavity
model and the (Glauber-Lewenstein) real cavity model. It is shown that owing to
nonradiative decay associated with absorption the rate of spontaneous decay
sensitively depends on the cavity radius when the atomic transition frequency
approaches an absorption band of the medium. Only when the effect of absorption
is fully disregarded, then the familiar local-field correction factors are
recovered.Comment: 28 pages, 6 figures, typeset using RevTe
Kernel Exponential Family Estimation via Doubly Dual Embedding
We investigate penalized maximum log-likelihood estimation for exponential family distributions whose natural parameter resides in a reproducing kernel Hilbert space. Key to our approach is a novel technique, doubly dual embedding, that avoids computation of the partition function. This technique also allows the development of a flexible sampling strategy that amortizes the cost of Monte-Carlo sampling in the inference stage. The resulting estimator can be easily generalized to kernel conditional exponential families. We establish a connection between kernel exponential family estimation and MMD-GANs, revealing a new perspective for understanding GANs. Compared to the score matching based estimators, the proposed method improves both memory and time efficiency while enjoying stronger statistical properties, such as fully capturing smoothness in its statistical convergence rate while the score matching estimator appears to saturate. Finally, we show that the proposed estimator empirically outperforms state-of-the-art methods in both kernel exponential family estimation and its conditional extension
Random Resonators and Prelocalized Modes in Disordered Dielectric Films
Areal density of disorder-induced resonators with a high quality factor,
, in a film with fluctuating refraction index is calculated
theoretically. We demonstrate that for a given , where is the light
wave vector, and is the transport mean free path, when {\em on average} the
light propagation is diffusive, the likelihood for finding a random resonator
increases dramatically with increasing the correlation radius of the disorder.
Parameters of {\em most probable} resonators as functions of and are
found.Comment: 6 pages including 2 figure
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