All Doors Lead to the Kitchen – Sustainability and Wellbeing Challenges in a Shared Centrepiece of Living

The kitchen figures a central place in the home where a significant share of a household’s resource consumption takes place. Sharing the kitchen between multiple households has potential to bring positive sustainability effects due to more efficient use of both material resources and energy. The concept of shared kitchens has, however, thus far had a limited diffusion. This paper explores the potential of shared kitchens as a future sustainable living environment by studying user experiences from a Living Lab setting. It builds the base for an overarching larger European collaboration on how future shared kitchens should be designed in order to support everyday practices while optimising the conditions for achieving positive impact on both sustainability and wellbeing. Findings are presented from five focus areas concerning different use contexts: (1) accessing, (2) cooking, (3) living and socialising, (4) storing, and (5) cleaning

Relativistic MHD Simulations of Jets with Toroidal Magnetic Fields

This paper presents an application of the recent relativistic HLLC approximate Riemann solver by Mignone & Bodo to magnetized flows with vanishing normal component of the magnetic field. The numerical scheme is validated in two dimensions by investigating the propagation of axisymmetric jets with toroidal magnetic fields. The selected jet models show that the HLLC solver yields sharper resolution of contact and shear waves and better convergence properties over the traditional HLL approach.Comment: 12 pages, 5 figure

Analysis of future threats to civil aviation within the project COPRA (Comprehensive European Approach to the Protection of Civil Aviation)

In the last decades and after 9/11 more and more security technologies, regulations and processes have been implemented into the aviation security system without fully integrating them. This has led to a complex and time consuming system that cannot handle the expected increase of passengers in the next decades. COPRA aims to set up a research roadmap for a European perspective on short-, mid- and long-term aviation security concepts, standards and proliferation issues. In this contribution we present the overall approach of COPRA and the first fundamental step where we focus on the threat analysis to detect the threat situation and its evolution regarding new and emerging threats

Student session, morning, 13 Aug 1998

Searches for R-parity violating Chargino decays. Why does particle physics community need java?Student projects presentatio

Resilien-tech: Recommendations for bringing resilience into practice

Is resilience just another buzzword? What use can we make of the term and the underlying concept? Resilience is the ability to repel, prepare for, take into account, absorb, recover from and adapt ever more successfully to actual or potential adverse events. Those events are either catastrophes or processes of change with catastrophic outcome, which can have human, technical or natural causes. In Germany, there is a lack of “hands-on” approaches that try to implement some characteristics of resilient thinking into practice. By using the experience of national and international experts, the study RESILIEN-TECH comes up with a list of recommendations that can be used as guidelines for further research and development activities in the field of resilience – from developing methods for modeling and simulation of complex socio-technical systems to establishing resilience as key component for sustainable development

Relativistic MHD simulations of extragalactic jets

We have performed a comprehensive parameter study of the morphology and dynamics of axisymmetric, magnetized, relativistic jets by means of numerical simulations. The simulations have been performed with an upgraded version of the GENESIS code which is based on a second-order accurate finite volume method involving an approximate Riemann solver suitable for relativistic ideal magnetohydrodynamic flows, and a method of lines. Starting from pure hydrodynamic models we consider the effect of a magnetic field of increasing strength (up to $\beta \equiv |b|^2/2p \approx 3.3$ times the equipartition value) and different topology (purely toroidal or poloidal). We computed several series of models investigating the dependence of the dynamics on the magnetic field in jets of different beam Lorentz factor and adiabatic index.
We find that the inclusion of the magnetic field leads to diverse effects which contrary to Newtonian magnetohydrodynamics models do not always scale linearly with the (relative) strength of the magnetic field. The relativistic models show, however, some clear trends. Axisymmetric jets with toroidal magnetic fields produce a cavity which consists of two parts: an inner one surrounding the beam which is compressed by magnetic forces, and an adjacent outer part which is inflated due to the action of the magnetic field. The outer border of the outer part of the cavity is given by the bow-shock where its interaction with the external medium takes place. Toroidal magnetic fields well below equipartition ($\beta = 0.05$) combined with a value of the adiabatic index of 4/3 yield extremely smooth jet cavities and stable beams.
Prominent nose cones form when jets are confined by toroidal fields and carry a high Poynting flux ($\sigma\equiv |b|^2/\rho>0.01$ and $\beta\geq 1$). In contrast, none of our models possessing a poloidal field develops such a nose cone. The size of the nose cone is correlated with the propagation speed of the Mach disc (the smaller the speed the larger is the size). If two models differ only by the adiabatic index, jets having smaller adiabatic indices tend to develop smaller nose cones

十九世紀香港粵商的商業網絡

In the process of making drawn and ironed cans out of a steel sheet, non-metallic inclusions such as chemical oxides in the steel sheet may cause cracks. Therefore, steel sheets are inspected before they are drawn and the magnetic flux leakage testing is usually employed for the inspection [1]. When there are non-metallic inclusions in the steel sheet, magnetic fields produced by a magnetizer leak out around such defects because of the differences in material permeability. These leakage fields are detected by flux sensitive sensors such as Hall plates or magnetodiodes [2]