Cloud Computing - værd at overveje

OCLC, LibLime og DuraSpace er eksempler på biblioteksaktører, som er længst fremme med Cloud Computing. Læs her hvorfor konceptet har et stort potentiale, og hvorfor alle biblioteker bør overveje det i forhold til økonomi og samarbejde

Analysis of time-to-event for observational studies: Guidance to the use of intensity models

This paper provides guidance for researchers with some mathematical background on the conduct of time-to-event analysis in observational studies based on intensity (hazard) models. Discussions of basic concepts like time axis, event definition and censoring are given. Hazard models are introduced, with special emphasis on the Cox proportional hazards regression model. We provide check lists that may be useful both when fitting the model and assessing its goodness of fit and when interpreting the results. Special attention is paid to how to avoid problems with immortal time bias by introducing time-dependent covariates. We discuss prediction based on hazard models and difficulties when attempting to draw proper causal conclusions from such models. Finally, we present a series of examples where the methods and check lists are exemplified. Computational details and implementation using the freely available R software are documented in Supplementary Material. The paper was prepared as part of the STRATOS initiative.Comment: 28 pages, 12 figures. For associated Supplementary material, see http://publicifsv.sund.ku.dk/~pka/STRATOSTG8

The Influence of Military Identity on Work Engagement and Burnout in the Norwegian Army Rapid Reaction Force

The present study examined the influence of military identity on work engagement and burnout among members in the Norwegian Army Rapid Reaction Forces (RRF). Hierarchical regression analyses found work engagement to be predicted by military identity (positively so by professionalism, and negatively by individualism), with individualism also predicting burnout. This is the first study to examine the unique influence of military identity on burnout and engagement among operational army personnel in the Norwegian Armed Force

Non-Destructive Identification of Cold and Extremely Localized Single Molecular Ions

A simple and non-destructive method for identification of a single molecular ion sympathetically cooled by a single laser cooled atomic ion in a linear Paul trap is demonstrated. The technique is based on a precise determination of the molecular ion mass through a measurement of the eigenfrequency of a common motional mode of the two ions. The demonstrated mass resolution is sufficiently high that a particular molecular ion species can be distinguished from other equally charged atomic or molecular ions having the same total number of nucleons