Knowledge linked to programming has recently been extensively strengthened in curricula and syllabi in the Swedish compulsory school. The introduction of this new content requires that teachers have to be trained in programming and programming teaching. The aim of this study is to investigate what content and values that emerge as important in a professional development course and in the partic...

The vehicle driving comfort has become one of the important factors of vehicle quality and receives increasing attention. In this paper, the mechanical and mathematical models of the halfcar, five degrees of freedom DOF of a vehicle were established, as well as the pseudoexcitation model of road conditions for the front wheel and the rear wheel. By the pseudoexcitation method, the equations of ...

The problem of particle number density measurements with a laser Doppler anemometer is addressed. Analytical expressions for the instrument measurement cross section are given. An automatic calibration method for determining unknown scattering parameters, which promises good accuracy in changeable optical conditions, is described. Estimates of the measurement uncertainty are derived and the met...

Understanding cellular structure is key to understanding cellular regulation. New developments in super-resolution fluorescence imaging, electron microscopy, and quantitative image analysis methods are now providing some of the first three-dimensional dynamic maps of biomolecules at the nanometer scale. These new maps--comprehensive nanometer-scale cellular cartographies--will reveal how the mo...

We present an approach to model supervisory control systems based on extended behaviour networks. In particular, we employ them to formalize the control theory of the supervisor. By separating the reasoning in the supervisor and the action implementation in the controller, the overall system architecture becomes modular, and therefore easily changeable and modifiable.

Uncoupled multilayer plates create a complex dynamical structure, where depending on input parameters and initial and boundary conditions, various vibration types appear. In spite of undoubtable achievements in static and dynamical problems of nonlinear theory of plates, the problems of contacts exhibited by multilayer plates subject to both longitudinal and transversal time-changeable loads ar...