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Joint improvisation in the arts practices : Entrainment, engagement and expert skill

To improvise together for the pure curiosity, joy, and beauty of it constitutes a central but often neglected ability of human beings. Integrating pragmatic, practical, and technical skills with conceptual understanding, improvisation is adaptive and collaborative. It seems made to counter the challenges of living in a fleeting present, unconstrained by physical and historical boundaries, and very

Beyond knowledge management : understanding how to share knowledge through logic and practice

The aim of this paper is to develop our understanding of how knowledge is shared within a professional service firm. Insights from a 1-year ethnographic study suggest that it is important to go beyond the ‘theoretical limitations’ of knowledge management in order to understand how to manage knowledge within a firm. From the analysis of how knowledge is shared in practice, three logics emerge that

En integrationist? JaVIsst!

Vi skulle alla tjäna på mer samverkan och mindre motverkan. Särskilt i ett litet land som Sverige. För att möta de globala samhällsutmaningar vi står inför har behovet av integrerad forskning förts fram i den forskningspolitiska debatten. För hållbar utveckling behöver forskningen bättre och i ett tidigare skede inkludera samhället i arbetet med hur vi ska möta dessa utmaningar. Men för att verkli

Public procurement for innovation: lessons from the procurement of a navigable storm surge barrier

Public Procurement for Innovation (PPI) is a powerful, underutilized demand-side innovation policy instrument that can be used to stimulate innovation, meet sectoral policy goals and mitigate grand challenges. Further research is required to analyze how PPI contributes to these goals and how it operates in practice; more case studies are needed to achieve this. We analyze a case of direct developm

Efficient Time Integration of IMEX Type using Exponential Integrators for Compressible, Viscous Flow Simulation

We investigate the adaption of the recently developed exponential integrators called EPIRK in the so-called domain-based implicit-explicit (IMEX) setting of spatially discretized PDE's. The EPIRK schemes were shown to be efficient for sufficiently stiff problems and offer high precision and good stability properties like A- and L-stability in theory. In practice, however, we can show that these st

Convergence Analysis of the Dirichlet-Neumann Iteration for Finite Element Discretizations

We analyze the convergence rate of the Dirichlet-Neumann iteration for the fully discretized unsteady transmission problem. Specifically, we consider the coupling of two linear heat equations on two identical non overlapping domains with jumps in the material coefficients across these. In this context, we derive the iteration matrix of the coupled problem. In the 1D case, the spectral radius of th

Water Exchange Mechanism of Tetraaquapalladium(II). A Variable Pressure and Variable Temperature Oxygen-217 NMR Study

Water exchange of square-planar Pd(H2O)42+ has been studied as a function of temperature (240 to 345 K) and pressure (0.1 to 260 MPa, at 324 K) by measuring the 17/O-FT-NMR line-widths of the resonance from coordinated water at 27.11 and 48.78 MHz. The following exchange parameters were obtained: k298ex = (560 ± 40) s−1, ΔH* = (49.5 ± 1.9) kJ mol−1, ΔS* = – (26 ± 6) J K−1 mol−1 and ΔV* = – (2.2 ± Water exchange of square-planar Pd(H2O)42+ has been studied as a function of temperature (240 to 345 K) and pressure (0.1 to 260 MPa, at 324 K) by measuring the 17/O-FT-NMR line-widths of the resonance from coordinated water at 27.11 and 48.78 MHz. The following exchange parameters were obtained: k298ex = (560 ± 40) s−1, ΔH* = (49.5 ± 1.9) kJ mol−1, ΔS* = – (26 ± 6) J K−1 mol−1 and ΔV* = – (2.2 ±

Scalability Aspects of Pre-Chamber Ignition in Heavy Duty Natural Gas Engines

This article presents a study related to application of pre-chamber ignition system in heavy duty natural gas engine which, as previously shown by the authors, can extend the limit of fuel-lean combustion and hence improve fuel efficiency and reduce emissions. A previous study about the effect of pre-chamber volume and nozzle diameter on a single cylinder 2 liter truck-size engine resulted in reco

The damping of transverse coherent instabilities by harmonic cavities

At nonzero chromaticity, the threshold current due to transverse coupled bunch instabilities in an electron storage ring is defined by intrabunch head-tail motion of higher than zeroth order. Multibunch tracking simulations predict that this threshold can be increased to several times its original value through the introduction of bunch lengthening harmonic cavities. One previously suggested expla

Numerical and experimental studies on scale models of lightweight building structures

Lightweight buildings are sensitive to low-frequency vibrations, making it difficult to construct them in such a way that noise and disturbing vibrations are kept at an acceptable level. In the design of vibration reduction measures, it is desirable to have computational models for predicting the effects of structural modifications. Validations of the models to experimental data have to be perform

Parental estimation of their child's increased type 1 diabetes risk during the first 2 years of participation in an international observational study : Results from the TEDDY study

This study assessed mothers' and fathers' perception of their child's risk of getting type I diabetes (TID) during the first 2 years of their participation in The Environmental Determinants of Diabetes in the Young (TEDDY) study. TEDDY parents were informed of their child's increased genetic risk for Tl D at study inception. Parent perception of the child's risk was assessed at 3, 6, 15, and 27 mo

In-beam background suppression shield

The long (3 ms) proton pulse of the European Spallation Source (ESS) gives rise to unique and potentially high backgrounds for the instrument suite. In such a source an instrument's capabilities will be limited by its Signal to Noise (S/N) ratio. The instruments with a direct view of the moderator, which do not use a bender to help mitigate the fast neutron background, are the most challenging. Fo

Wind tunnel as a tool in bird migration research

Wind tunnels, in which birds fly against an artificially generated air flow, have since long been used to evaluate aerodynamic properties of steady bird flight. A new generation of wind tunnels has also allowed the many processes associated with migratory flights to be studied in captivity. We review how wind tunnel studies of aerodynamics and migratory performance together have helped advancing o

Improvement of energy resolution of ΔE-E CsI/SSD- telescope at measurement of (γ,p)-Reactions using strip information of SSD

Information on the triggered strips of silicon strip detectors of a MAX-lab ΔE-E CsI/SSD-telescope was used to determination the angular range of emitted reaction particles. It allowed an improvement in the energy resolution of the telescope by decreasing the kinematical broadening of the missing energy spectra of12C(γ,p)11B reaction, and enabling more accurate separation of exited states of resid

Visual navigation in nocturnal insects

Despite their tiny eyes and brains, nocturnal insects have evolved a remarkable capacity to visually navigate at night. Whereas some use moonlight or the stars as celestial compass cues to maintain a straight-line course, others use visual landmarks to navigate to and from their nest. These impressive abilities rely on highly sensitive compound eyes and specialized visual processing strategies in