468 research outputs found
Crises in Nederland: Rampen, rellen, gijzelingen en andere crises
bookCriminal Justice: Legitimacy, accountability, and effectivit
Security, safety and criminal justice in the Netherlands: an organizational and legal perspective
Criminal Justice: Legitimacy, accountability, and effectivit
Nieuwe Wet op de Inlichtingen- en Veiligheidsdiensten: Een nieuw evenwicht tussen veiligheid en waarborgen
The Legitimacy and Effectiveness of Law & Governance in a World of Multilevel Jurisdiction
Lessons from the MH-17 transboundary disaster investigation
Transboundary crises, incidents and
disasters, such as chemical spills, airplane crashes and critical
infrastructure breakdowns, involving multiple levels and domains of governance pose
a particular set of challenges (Ansell et al, 2010; Kuipers and Boin, 2015; Boin
2019). These challenges also pertain to the investigation and learning phase of
a crisis. We study a typical transboundary case: the crash of a Malaysia
Airlines Flight 17 (MH17), with 298 people on board from a variety of
nationalities but the majority from the Netherlands, that crashed in Ukraine in
a conflict zone near the Russian border. The MH17 case contains valuable
lessons on transboundary disaster investigations. The Dutch Safety Board (DSB)
took the lead of the international independent investigation into the causes of
the crash. With an international group of stakeholders the DSB investigated a
crash that resulted from a bilateral conflict, requiring the support from
Ukraine’s powerful neighbor Russia that meanwhile stood accused of withholding
evidence and supporting Ukrainian separatists. Retrieving evidence and
researching the causality of the crash was no easy task. If countries wish to
follow their ambition to learn from accidents in order to ‘prevent the past
repeated’, they may more often need to investigate such transboundary cases.
This case study probes into how challenges that are typical to transboundary
crises affected the accident investigation into the MH17 disaster. We search
for lessons on transboundary accident investigation that transcend the
boundaries of this single case. Such lessons may prove invaluable for learning
from future accidents.
Security and Global Affair
Beginselen van behoorlijk rampenonderzoek
Geschillenbeslechting algemee
Dynamical model of sequential spatial memory: winnerless competition of patterns
We introduce a new biologically-motivated model of sequential spatial memory
which is based on the principle of winnerless competition (WLC). We implement
this mechanism in a two-layer neural network structure and present the learning
dynamics which leads to the formation of a WLC network. After learning, the
system is capable of associative retrieval of pre-recorded sequences of spatial
patterns.Comment: 4 pages, submitted to PR
Anomalous diffusion and the first passage time problem
We study the distribution of first passage time (FPT) in Levy type of
anomalous diffusion. Using recently formulated fractional Fokker-Planck
equation we obtain three results. (1) We derive an explicit expression for the
FPT distribution in terms of Fox or H-functions when the diffusion has zero
drift. (2) For the nonzero drift case we obtain an analytical expression for
the Laplace transform of the FPT distribution. (3) We express the FPT
distribution in terms of a power series for the case of two absorbing barriers.
The known results for ordinary diffusion (Brownian motion) are obtained as
special cases of our more general results.Comment: 25 pages, 4 figure
Solar Intranetwork Magnetic Elements: bipolar flux appearance
The current study aims to quantify characteristic features of bipolar flux
appearance of solar intranetwork (IN) magnetic elements. To attack such a
problem, we use the Narrow-band Filter Imager (NFI) magnetograms from the Solar
Optical Telescope (SOT) on board \emph{Hinode}; these data are from quiet and
an enhanced network areas. Cluster emergence of mixed polarities and IN
ephemeral regions (ERs) are the most conspicuous forms of bipolar flux
appearance within the network. Each of the clusters is characterized by a few
well-developed ERs that are partially or fully co-aligned in magnetic axis
orientation. On average, the sampled IN ERs have total maximum unsigned flux of
several 10^{17} Mx, separation of 3-4 arcsec, and a lifetime of 10-15 minutes.
The smallest IN ERs have a maximum unsigned flux of several 10^{16} Mx,
separations less than 1 arcsec, and lifetimes as short as 5 minutes. Most IN
ERs exhibit a rotation of their magnetic axis of more than 10 degrees during
flux emergence. Peculiar flux appearance, e.g., bipole shrinkage followed by
growth or the reverse, is not unusual. A few examples show repeated
shrinkage-growth or growth-shrinkage, like magnetic floats in the dynamic
photosphere. The observed bipolar behavior seems to carry rich information on
magneto-convection in the sub-photospheric layer.Comment: 26 pages, 14 figure
Measurement of the Charged Multiplicities in b, c and Light Quark Events from Z0 Decays
Average charged multiplicities have been measured separately in , and
light quark () events from decays measured in the SLD experiment.
Impact parameters of charged tracks were used to select enriched samples of
and light quark events, and reconstructed charmed mesons were used to select
quark events. We measured the charged multiplicities:
,
, from
which we derived the differences between the total average charged
multiplicities of or quark events and light quark events: and . We compared
these measurements with those at lower center-of-mass energies and with
perturbative QCD predictions. These combined results are in agreement with the
QCD expectations and disfavor the hypothesis of flavor-independent
fragmentation.Comment: 19 pages LaTex, 4 EPS figures, to appear in Physics Letters
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