Kompetencebehov blandt naturfagslærere i grundskolen

I foråret 2018 offentliggjorde VLAK-regeringen en ny national naturvidenskabsstrategi der blandt andet indeholder et ønske om fagligt og didaktisk endnu dygtigere lærere i naturfagene. Indeværende artikel gengiver centrale resultater fra den kortlægning af videns- og kompetencebehov blandt naturfagslærerne i grundskolen som Rambøll Management Consulting har gennemført i samarbejde med Københavns Professionshøjskole for Undervisningsministeriet. Baseret på et miks af kvantitative og kvalitative data centreret omkring naturfagslærernes eget perspektiv fremhæves det at der generelt er et behov for og efterspørgsel på fagdidaktisk kompetenceudvikling, ligesom undersøgelsen indikerer at der blandt lærere i natur/teknologi eksisterer et relativt stort behov for målrettet fagfaglig opkvalificering

Hov! Der sker noget derude

Intet resumé

Mode locking and spatiotemporal chaos in periodically driven Gunn diodes

Numerical simulation is applied to study the highly nonlinear-dynamic phenomena that can arise in Gunn diodes by interaction between the internally generated domain mode and an external microwave signal. By adjusting the time of domain formation and the speed of propagation, the internal oscillation entrains with the external signal. This produces a devil’s staircase of frequency-locked solutions. At higher microwave amplitudes, period doubling and other forms of mode-converting bifurcations can be seen. In this interval the diode also exhibits spatiotemporal chaos. At still higher microwave amplitudes, transitions to delayed, quenched, and limited space-charge accumulation modes take place

Group G Streptococcal Bacteremia in Jerusalem

Recurrent group G Steptococcus bacteremia, associated with lymphatic disorders and possibly emm stG840.0, is described

Mogens Herman Hansen, Demokratiet i Athen, København: Nyt Nordisk Forlag 1845.,kr. 168,00.

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Core evolution: Emergence of cooperative structures in a computational chemistry

We have developed an artificial ecology in the computer core, where one is able to evolve assembler-automaton code without any predefined evolutionary path. The system, in the present version has one dimension, is updated in parallel, the instructions are only able to communicate locally, and the system is continuously subjected to noise. The system also has a notion of computational resources. Depending on the specified parameters and the level of complexity of distance from a randomized core, this electronic garden is started at, we see different evolutionary paths. For several initial conditions the system is able to develop extremely viable cooperative programs (organisms ) which totally dominates the core. This demonstrates the emergence of complex functional properties in a computational environment. 21 refs., 7 figs., 2 tabs