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New tools for probing biological extremes of ionizing radiation

Three different biological extremes of irradiation of living organisms, both human and animal, have been investigated and are presented in this thesis. Central to the thesis is the concept of bystander effects of ionizing radiation, i.e. biological responses in a cell that are not caused by that cell receiving a direct hit by ionizing radiation but by the fact that a neighbouring cell has been hit

Skola med fördröjning: nyanlända elevers sociala spelrum i "en skola för alla"

This dissertation aims to investigate the social situation at school for students that have migrated to Sweden during their last four years at compulsory school or during upper secondary school. The study investigates the social interaction between students with a special focus on the possibilities and hindrances for inclusion of the newcomer immigrant students in different groupings at school, an

Essential Tensions in the Field of Psychiatry

In this presentation I discuss modern psychiatry, esp. neuropsychiatry, from the perspectives of philosophy and sociology of science. It is argued that there exist a number of tensions and ‘incommensurabilities’ in the field that are hard to overcome, thus giving rise to controversies. I separate four types of tensions, belonging to different ‘boxes.’ The first is called cognitive/internal, compri

Dual Problem in Multi-Objective Hp Control

In this paper, we approach a multi­objective Hp prob­ lem with several Hp constraints from the Banach duality point of view. The problem is reduced to an abstract norm minimization problem, and the dual problem is derived using the classical Banach re­ sult. It completes the primal­dual pair which can be used to solve the problem numerically by nite­ dimensional approximations. While the approxima

Sum rules for lossless antennas

Sum rules for the antenna input impedance and admittance are introduced. These identities relate the radiation resistance and conductance integrated over all frequencies with the low-frequency capacitance and inductance. They are valid for lossless antennas and particularly useful for small antennas that utilise their first resonance. Numerical results for various antennas are used to illustrate t

Experiences among older persons using mobility devices

Objectives. The aim of the study was to investigate older persons' experiences of using mobility devices. Methods. In this qualitative study, focus group interviews were carried out with participants living in two municipalities in the south of Sweden. Occupational therapists and physiotherapists identified interested participants, 65 years or older. A total of 22 persons participated once in the