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The concept “Broken Technologies” is related to the question: “Which is the benefit of humanity studies?” Of course the question is rhetorical because, how could this question be answered if the benefit was not obvious? Any answer supposes that we understand what we are asking for and the study of “what we mean” is one of the axes of the epistemology of the humanities. Anyway, we can also put the

Transport phenomena in quantum wells and wires in presence of disorder and interactions

Popular Abstract in Undetermined All of our present information technology culture with computers, internet, smart-phones, Bluetooth links, 3D-Tv, iPad tablets, programmable washing/cooking machines, car engines, navigation computers, etc. (the list goes on and on) is based on small electrical circuits. The smaller these circuits can be made, the faster and the better microelectronics can perform.Present-day electronics employ circuits of smaller and smaller dimensions, and today the length scales are so small that the laws of physics which rule micro-cosmos, quantum mechanics, become directly important. This thesis reports on theoretical work on electron transport in different nanostructures. We have studied semiconductor quantum wells, layered materials where each layer can be only a few

Foraging behaviour in piscivorous fish: mechanisms and patterns

Mechanistic understanding of piscivore foraging at the individual level is important in order to understand and make predictions of piscivore effects at population and community levels. To understand the mechanisms affecting selection and consumption rates each step in the foraging cycle (search, encounter, active choice, attack, capture, ingestion, digestion) should be studied. In my studies of d

From Sequence to Structure- Characterizing Human and Plant Aquaporins

Popular Abstract in Swedish Biokemi, livets kemi, är den gren av naturvetenskapen som avhandlar de molekyler och kemiska processer som är nödvändiga för allt levandes existens. Genom att karakterisera livets molekyler och deras funktion vill man öka förståelsen kring vad som krävs för att en organism ska kunna leva, växa, fortplanta sig och anpassa sej till nya miljöer och förhållanden. Som biokemAquaporins constitute a class of membrane proteins that create pores through the lipid bilayer of biological membranes, facilitating the passage of water and other small solutes. Nearly all living organisms possess a more or less intricate set up of aquaporin proteins and the importance of these channels has been implicated in many aspects of health and disease. The aim of the projects summarized

ICT, learning and the potential of androgynity

Baylor and collaborators have demonstrated (Baylor & Plant, 2005; Baylor et. al., 2006) that the use of virtual pedagogical coaches portrayed as young and attractive women can increase the willingness of female students to apply for technical education and to help increase their selfefficacy. Pedagogical processes such as role modelling and identification seem to be involved (cf. Bandura, 1977

A PSPACE complete problem related to a pebble game

The pebble game on AND/OR dags which is natural generalization of a well known pebble game on dags is considered. The following problem is given: if k pebbles are enough to place a pebble on a given vertex of an AND/OR dag. It is shown that the problem is log-space complete for languages accepted in polynomial space.

Public safety investigations - a new evolutionary step in safety enhancement?

Over the past years, natural catastrophes have disrupted society: the tsunami in December 2004, hurricane Katrina in the Gulf of Mexico, the earthquakes in Pakistan in 2005, causing massive material destruction and human suffering. In addition, technological accidents in transport, energy and process industry undermine the public faith in risk management, while the uncontrolled spreading of diseas