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Exponential Vector Field Tomography

In the exponential Radon transform in R2, the integrals of a scalar function f over lines, with exponential weight functions, are determined. We demonstrate how to define two different kinds of exponential Radon transforms for vector fields in R2 in a natural way. It is shown that having data from these transforms it is possible to reconstruct the vector field uniquely. The motivation for the stud

The transformation between exploration and exploitation applied to inventors of packaging innovations

While the inventor is often the driver of an invention in the early stages, he/she needs to move between different social networks for knowledge in order to create and capture value. The main objective of this research is to propose a literature-based framework based on innovation network theory and complemented with C-K theory, in order to analyze the invention/innovation process of inventors and

Effects of Sound Type on Recreating the Trajectory of a Moving Source

The ABBI (Audio Bracelet for Blind Interaction) device is designed for visually impaired and blind children to wear on the wrist and produce sound based on the movement of the arm through space. The primary func- tion is to inform a child (or adult) about his/her own movements to aid spatial cognition rehabilitation. How- ever, the device could also be worn by friends and family and be used to inf

Towards climate-responsible peatlands management

In the early 1970’s, about 80 ha of rich fen, meadows and wet forest on the margins of the largeand pristine raised bog ‘Komosse’ in Southern Sweden were drained by ditches to promote spruce(Picea abies) growth and forestry production. Draining had a dramatic impact on forest productionon the nutrient-rich peaty soils downhill from the ditches. In 40 years, most of the meadows andfens had turned i

To Boldly Go Where No Man has Gone Before: Seeking Gaia's Astrometric Solution with AGIS

Gaia is ESA's ambitious space astrometry mission with a foreseen launch date in late 2011. Its main objective is to perform a stellar census of the 1,000 million brightest objects in our galaxy (completeness to V=20 mag) from which an astrometric catalog of micro-arcsec (μas) level accuracy will be constructed. A key element in this endeavor is the Astrometric Global Iterative Solution (AGIS) - th

Forskaren har ordet: Lärdomar från ett projekt

Rapport från ett treårigt projekt (2011-2013) om församlingsdiakoni och frivillighet i Norrlands inland. Kapitlet innehåller följeforskarens summering av iakttagelser och lärdomar lärdomar från projektet att sprida vidare inom Svenska kyrkan.

CFD Simulations of Pre-Chamber Jets' Mixing Characteristics in a Heavy Duty Natural Gas Engine

The effect of pre-chamber volume and nozzle diameter on performance of pre-chamber ignition device in a heavy duty natural gas engine has previously been studied by the authors. From the analysis of recorded pre- and main chamber pressure traces, it was observed that a pre-chamber with a larger volume reduced flame development angle and combustion duration while at a given pre-chamber volume, smal

An improved MIMO detector for high data rates wireless communications

The sphere detector is near-optimal in bit error rates (BER) performance for MIMO detection, but it suffers from the lower detection throughput. In this paper, we propose an improvement to the sub-optimal MIMO detection. The proposed detector can achieve a much higher detection throughput than the sphere detector, with a comparable complexity and a small degradation in BER performance at high sign

Den konservative – om konservatismens etos. Et forsøg

Artikeln diskutera konservatismens etos som en specifik mänsklig grundhållning. Fyra aspekter lyfts fram: 1. Avsked från det principiella. 2. Anknytning till det redan förefintliga. 3. En pluralistisk etik. 4. En institutionell etik.