The purpose of this degree project was to build laboratory equipment for a new course in power electronics that starts this autumn 2010 at Uppsala University. The equipment is intended for student labs and it covers the most important areas of the course including rectifying, Buck-/boost-converters and PWM-modulation. It is built as one sealed unit where all the electronics are built-in but visible and it has a connection board where students safely can connect the different circuits. The project has advanced from theoretical studies of circuit design, choosing of components and simulations to drawing the printed circuit board (PCB), soldering, case building, final testing and troubleshooting - basically most steps from an early idea to a final product. Measurements on the final product gave about the same results as the earlier simulations of the circuits and the result is overall satisfying..

This thesis aims to develop proposals and models for a modular electronics construction to a future D250S Dual battery charger. The aim also includes investigation of possibilities to use some of Texas Instruments C2000 microprocessors. The reason for this is that CTEK SWEDEN AB wants to renew the present D250S Dual battery charger and lower the manufacturing costs. The thesis work has involved gathering theoretical facts for the development of a design on the modular electronic construction, the choice on which microprocessor to use, the choice of electronic components and facts about peripheral equipment to the D250S Dual. With the theoretical there has been developed different solutions to the proposed hardware and software solutions with comparisons in aspects of positive and negative.

Fiskresurserna har varit och är en viktig del i utvecklingen av Senegal. Men nu är situationen på väg att förändras och bestånden av fisk håller successivt på att utarmas. Inhemska och utländska fiskare rivaliserar om resurserna. Fiskarna bryter mot de gällande reglerna samtidigt som kontrollen av nyttjandet är bristfällig. Detta leder i sin tur till att regleringen av resursutnyttjandet blir problematisk.

Today's Swedish large-scale forestry uses almost exclusively computer-aided Bucking. It allows the harvester computer, using an optimisation price list (steering price list), to maximize the value of each tree. The optimisation price list can be adjusted so that the industry gets the raw material it demands from the forest. There are various simulation programs that can be used when constructing a optimisation price list. The simulation program merchandise a database of stem shapes using a given price list and mimics a harvester's work. To get the demanded raw material for the industry it is important to use a well-adjusted optimisation price list.

So- called ?Network Based Defense? (NBD) was introduced in Sweden in connection with the transformation of the Swedish Armed Forces in 1999. NBD is based on the U.S. variant Network Centric Warfare (NCW), which in turn is derived from research on the concept of Revolution in Military Affairs (RMA). In Sweden the concept was introduced and included not only the Armed Forces but was intended to also support the Swedish civilian agencies in order to create networks and hence share the available information and thus more effective crisis management and to provide more "bang for the Buck." In developing the concept of NBD the Swedish Armed Forces used both economic and human resources, in the form of research, new technologies, new organization and new methods.Between year 2004 and 2006 the Armed Forces once again entered the process of reorganization.