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Multi-echelon Inventory Control with Integrated Shipment Decisions

Rising fuel prices and increasing environmental awareness emphasizes the importance of the transportation aspect in logistics. This calls for new improved inventory control methods that consider the effects of shipment strategies in a more realistic manner. This thesis, consisting of an introduction and three scientific papers, studies how shipment decisions can be included in the inventory contro

A Digitally Controlled Low-Power Clock Multiplier for Globally Asynchronous Locally Synchronous Designs

Partitioning large high-speed globally synchronous ASICs into locally clocked blocks reduces clock skew problems and if handled correctly it also reduces the power consumption. However, to achieve these positive effects, the blocks need on-chip clock generators having properties such as small area and low power consumption. Therefore, a low power, high frequency, small area digitally controlled on

Multirobot Tethering for Localization and Control

We investigate the use of particle filter (PF) estimation techniques on a hovercraft vehicle in an office environment. Monte Carlo Localization (MCL) with particle filtering is a popular method for localizing robots with laser range finders. In maps featuring long, uniform corridors though, a PF can produce low confidence estimates. When used as feedback to control an unstable vehicle this can pro

Mechano-sorptive effects in wooden material

The effects on wood of simultaneous mechanical and moisture loading are studied. In order to clarify the mechano-sorptive behaviour of wood, a review of different phenomena presented in the literature is included. Based on this review a constitutive model is proposed for the case of uniaxial stress in the longitudinal direction. The validity of the model is checked independently against test resul

Discrete and continuum analysis of localised deformation in sand using X-ray mu CT and volumetric digital image correlation

The objective of this work was to observe and quantify the onset and evolution of localised deformation processes in sand with grain-scale resolution. The key element of the proposed approach is combining state-of-the-art X-ray micro tomography imaging with three-dimensional volumetric digital image correlation techniques. This allows not only the grain-scale details of a deforming sand specimen t

Enabling design service facilitating interand intra-organizational sensemaking

The contribution of design is often regarded as providing a relieving service that delivers aesthetic competence at the end of a product development process. Previous studies have shown that industrial design consultancies aspire to be a strategic resource in their client firms, and that the focus of design is becoming increasingly intangible. The claim is that the competencies of the designer can