196,144 research outputs found
From public ownership to public use. In: M. Ruffert. The Public-Private Law Divide: Potential for Transformation?
No full textBook review: M. Ruffert, C. Walter, Institutionalised International Law, C.H. Beck, Hart Publishing, Nomos Verlagsgesellschaft, Baden Baden: 2015
No full textReview of a book: M. Ruffert, C. Walter, Institutionalised International Law, C.H. Beck, Hart Publishing, Nomos Verlagsgesellschaft, Baden Baden: 201
From public ownership to public use. In: M. Ruffert. The Public-Private Law Divide: Potential for Transformation?
No full textCollective action in Italy: conceptualising the right to strike
No full textanalisi dei casi giurisprudenziali Viking, Laval Ruffert; impatto sul diritto di sciopero di tale giurisprudenza; combinazione con libertà di concorrenz
Coalescing Neutron Stars -- Gravitational Waves From Polytropic Models
No full text. The dynamics, time evolution of the mass distribution, and gravitational wave signature of coalescing neutron stars described by polytropes are compared with three simulations published previously: (a) "Run 2" of Zhuge et al. (1994), (b) "Model III" of Shibata et al. (1992), and (c) "Model A64" of Ruffert et al. (1996). We aim at studying the differences due to the use of different numerical methods, different implementations of the gravitational wave backreaction, and different equations of state. We integrate the three-dimensional Newtonian equations of hydrodynamics by the Riemann-solver based "Piecewise Parabolic Method" on an equidistant Cartesian grid. Comparison (a) confronts the results of our grid-based PPM scheme with those from an SPH code. We find that due to the lower numerical viscosity of the PPM code, the post-merging oscillations and pulsations can be followed for a longer time and lead to larger secondary and tertiary maxima of the gravitational wave luminosity and ..
Pseudo-Newtonian simulations of black hole-neutron star mergers as possible progenitors of short-duration gamma-ray bursts
Full text linkBlack hole-neutron star (BH-NS) mergers are promising candidates for the progenitors of
short-duration gamma-ray bursts (GRBs). With the right initial conditions, the neutron star
becomes tidally disrupted, eventually forming a dense, accreting disk around the black hole.
The thermal energy of this black hole-disk system can be extracted via neutrino processes,
while the spin energy of the black hole can be extracted via magnetic processes. Either (or
even a combination of these) processes could feasibly power a relativistic jet with energy
≥~ 10 49 erg and duration ≤~ 2 s, hence producing a short-duration GRB.
In this thesis, we investigate BH-NS mergers with three-dimensional, pseudo-Newtonian
simulations. We use the simulation code Charybdis, which uses a dimensionally-split,
reconstruct-solve-average scheme (i.e. using Riemann solvers) to solve the Euler equations of
hydrodynamics. Although the code is based on a Newtonian framework, it includes pseudo-
Newtonian approximations of local gravitational wave effects and the innermost stable circular
orbit of the BH, which are both general relativistic phenomena. The code also includes
the effects of global neutrino emission, shear viscosity and self-gravity.
This thesis comprises two main projects. The first project is a parameter study of the equation
of state, which encapsulates the relationship between the pressure of a fluid and its other
thermodynamic properties. Although the EOS is well understood at low densities, it is yet to
be constrained at supranuclear densities, and so must be treated as a parameter in numerical
studies of BH-NS mergers. We present simulations using three existing EOSs, in order to
investigate their effect on the merger dynamics. We find that the EOS strongly influences the
fate of the NS, the properties of the accretion disk, and the neutrino emission.
In the second project, we begin upgrading Charybdis to include magnetic field effects, in
order to investigate the magnetic processes described above. We implement existing reconstruction
and Riemann solver algorithms for the equations of magnetohydrodynamics, and
present 1D tests to compare them. When modelling magnetic fields in more than one dimension,
we must also deal with the divergence-free condition, ∇. B = 0. We develop a new
constrained transport algorithm to ensure our code maintains this condition, and present 2D
tests to confirm its accuracy. This algorithm has many advantages over existing ones, including
easier implementation, greater computational efficiency and better parallelisation. Finally,
we present preliminary tests that use these algorithms in simulations of BH-NS mergers
Decision-making and information management
No full textInformation management is a core feature of each administrative procedure. The sharing of information is a key element of decentralised yet effective implementation of EU law within the internal market
Fabrication of a high aspect ratio (HAR) micropillar filter for a magnetic bead-based immunoassay
No full textA microfluidic chip has been realized for investigating immune cell (U937) activation with lipopolysaccharide (LPS) and subsequent pro-inflammatory cytokine (Interleukin-6, IL-6) detection (Ruffert et al. Proc. EMBL Conference Microfluidics 2012a, p 184; Proc. NanoBioTech Montreux, Poster Sessions B 2012b, pp 17-18). The microfluidic chip comprises two compartments: one compartment for the on-chip cell cultivation, differentiation, and stimulation, while the second one hosts superpara-magnetic beads ( 2.8 mu m) conjugated to anti-IL-6 antibodies for capturing the LPS-induced IL-6. The two compartments are separated by a micropillar-based filter with a spacing of 2 mu m. This filter allows the induced cytokines to infuse into the bead compartment (i.e. the magnetic immunoassay compartment), while preventing the magnetic beads and cells to cross over to the other compartment. To fulfill this requirement, a high aspect ratio pillar array was demonstrated as key element of this study and functionally characterized. The pore size of the filter is given by the lateral distance between the single pillars, which are fabricated by molding microfluidic structures in polydimethylsiloxane, using a master mold made of the expoy-based photoresist SU-8 (TM). An aspect ratio of 5:1 could be achieved with SU-8 (TM) bars featuring the dimensions 10 A mu m xA 2 mu m (height x width).LMIS
Legitimacy and Accountability in Italian Administrative Law. A Critical Analysis
No full textCRITICAL ANALYSIS OF LEGITIMACY AND ACCOUNTABILITY IN THE ITALIAN LEGAL ORDE
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
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