Knowledge transfer and utilization in water system management: knowledge and perceptions in daily practice

The aim of this research is to explore the possibility of enlarging the accessibility, usefulness, and utilization of knowledge about the physical-water system for decision- and policymakers. By studying the use of knowledge in the decision-making and policymaking processes, an attempt will me made to identify the institutional conditions which stimulate or obstruct knowledge exchange and utilization. In this paper, the difficulties in knowledge exchange and utilization are discussed from the scientists and the practitioners’ point of view

Reactive Turing Machines

We propose reactive Turing machines (RTMs), extending classical Turing machines with a process-theoretical notion of interaction, and use it to define a notion of executable transition system. We show that every computable transition system with a bounded branching degree is simulated modulo divergence-preserving branching bisimilarity by an RTM, and that every effective transition system is simulated modulo the variant of branching bisimilarity that does not require divergence preservation. We conclude from these results that the parallel composition of (communicating) RTMs can be simulated by a single RTM. We prove that there exist universal RTMs modulo branching bisimilarity, but these essentially employ divergence to be able to simulate an RTM of arbitrary branching degree. We also prove that modulo divergence-preserving branching bisimilarity there are RTMs that are universal up to their own branching degree. Finally, we establish a correspondence between executability and finite definability in a simple process calculus

Performance of the track matching

The procedure and the performance of the track matching algorithm at the time of DC'06 is described. The event-weighted efficiency is 79.3 % for all long tracks increasing to 86 % for tracks with p>5 GeV. An approach to tune the matching algorithm with real data is presented and a discussion on future improvements to the algorithm given

Health problems and marital satisfaction among older couples

Objective: Older couples are likely to be confronted with health problems of both spouses and these health problems may negatively influence their marital satisfaction. The present study examined these possible negative effects using a dyadic perspective. Method: Data from 78 independently living older couples were analyzed using the Actor–Partner Interdependence Model (APIM). Health problems were modeled as a latent factor of functional disability, the number of chronic diseases, and self-rated health. The couple’s health context, that is, similarity or dissimilarity, was examined with an actor–partner interaction variable. Results: For wives, spousal health problems were negatively associated with their marital satisfaction, but only under the condition that their own health was relatively good. For husbands, neither own nor spousal health problems were associated with their marital satisfaction. Discussion: Future research focusing on older couples needs to consider the couple’s health context next to health at the individual level

Nonlinear effects in the propagation of optically generated magnetostatic volume mode spin waves

Recent experimental work has demonstrated optical control of spin wave emission by tuning the shape of the optical pulse (Satoh et al.\ Nature Photonics, 6, 662 (2012)). We reproduce these results and extend the scope of the control by investigating nonlinear effects for large amplitude excitations. We observe an accumulation of spin wave power at the center of the initial excitation combined with short-wavelength spin waves. These kind of nonlinear effects have not been observed in earlier work on nonlinearities of spin waves. Our observations pave the way for the manipulation of magnetic structures at a smaller scale than the beam focus, for instance in devices with all-optical control of magnetism.Comment: Added new figures to further illustrate the nonlinear effects to show time evolution and spectral flow. Added references. Changed perspective on nonlinear effects w.r.t. applicability of NSE. Added acknowledgemen

The Trajectory Model for Track Fitting and Alignment

This note introduces the concept of Trajectories. The LHCb trajectory model and the implementation in the track fitting and tracking sub-detector code as in Brunel v31r2 are described. The possible use of trajectories for alignment is outlined

A Pulsar-Based Map of Galactic Acceleration

Binary pulsars can be used to probe Galactic potential gradients through calculating their line-of-sight accelerations. We present the first data release of direct line-of-sight acceleration measurements for 26 binary pulsars. We validate these data with a local acceleration model, and compare our results to those extracted from indirect methods. We find evidence for an acceleration gradient in agreement with these values, with our results indicating a local disk density of $\rho_\mathrm{d} = 0.064_{-0.033}^{+0.025} \ \mathrm{M_\odot}\mathrm{pc}^{-3}$. We also find evidence for unmodeled noise of unknown origin in our data set.Comment: 9 pages, 7 figure

Disentangling the effects of spin-orbit and hyperfine interactions on spin blockade

We have achieved the few-electron regime in InAs nanowire double quantum dots. Spin blockade is observed for the first two half-filled orbitals, where the transport cycle is interrupted by forbidden transitions between triplet and singlet states. Partial lifting of spin blockade is explained by spin-orbit and hyperfine mechanisms that enable triplet to singlet transitions. The measurements over a wide range of interdot coupling and tunneling rates to the leads are well reproduced by a simple transport model. This allows us to separate and quantify the contributions of the spin-orbit and hyperfine interactions.Comment: 5 pages, 4 figure