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We calculate the phase property of the reflection coefficient in two-terminal structures using a lattice tight-binding model. It is seen that, provided that there exist two coherent reflection paths, the reflection probability can be zero for certain electron energies. At these energies, the phase of the reflection coefficient shift abruptly by $pi$. Next, we study the reflection and transmissio
People who have visual impairments may have difficulties navigating freely and without personal assistance, and some are even afraid to go out alone. Current navigation devices with non-visual feedback are quite expensive, few, and are in general focused on routing and target finding. We have developed a test prototype application for Android in which a user may scan for map information using the
he regional coastal evolution model Cascade was enhanced to better describe the transfer and storage of sediment. Focus was on the cross-shore exchange of material from the subaerial to the sub-aqueous portion of the beach and on shoal evolution at coastal inlets. Cross-shore material exchange now includes erosion due to wave impact and overwash, and barrier and dune build-up by wind. Cascade was
Background: Despite the fact that old people´s technological needs have been payed much attention to in the last decennium, especially old users of information- and communication technology, technology has not found its natural place in research on ageing in modern societies. Purpose: This article examines to what extent social science research exist in the field of ageing and technology and where
This conference paper discusses queer theory in Sweden.
A short range FM transmitter is presented. It uses an architecture where the output frequency of a phase locked loop (PLL) is modulated by varying the division number of the feedback divider, using the 1-bit output of a ΔΣ ADC. The measured total harmonic distortion (THD) plus noise is less than 1% at 75 kHz deviation. The transmitter is fully integrated in a 0.13µm CMOS process and the core area
Regular column on theatre in the weekly newspaper Arbetaren (The Worker).
Popular Abstract in English This book investigates marketing work in professional service organizations from a rhetorical perspective. It comes to the conclusion that this work is accomplished by self-reflexive marketers who are reminiscent of the ancient sophists – a diverse group of itinerant advisors whom came to Athens around the fourth century BCE for business reasons. Marketers travel – as dMarketing has traditionally been understood from the perspective of marketing management. This causes problems when we study marketing practices because the normative discourse of marketing management is not particularly useful for describing the day-to-day work of marketing practitioners. This calls for marketing research from new perspectives. Rhetorical business – A study of marketing work in t
