Filtyp
High motion performance, stiffness, and accuracy are crucial for industrial robot applications, but these requirements are in practice contradictory. Using a novel type of robot, the so called Gantry Tau, new combinations of stiffness and accuracy are in principle possible, except for the backlash in the drive-trains of each joint. Existing techniques for backlash reduction are either mechanicall
In this thesis I examined a phenotypically plastic defence in a common freshwater snail, Radix balthica. Adaptive prey defences may involve behavioural, life-history or morphological changes. Snails are important species in freshwater systems. Their role as grazers on periphytic algae makes them particularly important as they have a positive impact on macrophyte growth in lakes and ponds. The str
I centrum för avhandlingen står en staty av Marcellus, enligt legenden staden Paris förste biskop. Den placerades vid slutet av 1100-talet som trumeaupelare i Porte Sainte-Anne, den högra av de tre portalerna på Notre-Dames västfasad. En första del av studien ger skulpturens historia, sådan den framställes i den konsthistoriska forskningen, och dess tolkning genom Marcelluslegenden. Ett grundlägga
The paper gives an overview of the planned orbit correc- tion system for the 3 GeV storage ring at the MAX IV lab- oratory, a light source facility currently under construction in Lund, Sweden[1, 2]. The ring will have a vertical beam size in the 1-4μm range in the insertion device (ID) straight sections depending on coupling[3], which places high re- quirements on the orbit stability. To meet thi
The objective of this paper is to review the fundamental macroscopic modeling of linear complex materials in a time domain formulation. Based upon a set of basic assumptions, the general form of the constitutive relations for a linear complex media in the time domain is formulated. Furthermore, constraints on the possible form of the susceptibility kernels for a passive medium are presented. For c
Latin America attends currently to the construction of a paradigm of rural development based on the potentiality of the territory to encourage processes of rural wellbeing. Some international studies relating rural development to territory from an institutional perspective have recently come out, greatly contributing to the construction of a territorially based rural development in the region. The
