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Distributed synchronization of Euclidean transformations with guaranteed convergence

This paper addresses synchronization of Euclidean transformations over graphs. Synchronization in this context, unlike rendezvous or consensus, means that composite transformations over loops in the graph are equal to the identity. Given a set of non-synchronized transformations, the problem at hand is to find a set of synchronized transformations approximating well the non-synchronized transforma

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Statistical shape models based on point distribution models are powerful tools for image segmentation or shape analysis. The most challenging part in the generation of point distribution models is the identification of corresponding landmarks among all training shapes. Since in general the true correspondences are unknown, correspondences are frequently established under the hypothesis that correc

Optimal output consensus for linear systems : A topology free approach

In this paper, for any homogeneous system of agents with linear continuous time dynamics, we formulate an optimal control problem. In this problem a convex cost functional of the control signals of the agents shall be minimized, while the outputs of the agents shall coincide at some given finite time. This is an instance of the rendezvous or finite time consensus problem. We solve this problem wit

Moderate and stable pain reductions as a result of interdisciplinary pain rehabilitation—A cohort study from the Swedish quality registry for pain rehabilitation (SQRP)

Few studies have investigated the real-life outcomes of interdisciplinary multimodal pain rehabilitation programs (IMMRP) for chronic pain. This study has four aims: investigate effect sizes (ES); analyse correlation patterns of outcome changes; define a multivariate outcome measure; and investigate whether the clinical self-reported presentation pre-IMMRP predicts the multivariate outcome. To thi

Mobilising affect for public art: affective practice in voluntary organising

Voluntary organising frequently relies on affective intensities to direct organisational efforts. However, it is not well understood how these intensities are cultivated across time and different contexts to engage and coordinate heterogeneous actors. By applying a practice approach to affect, this paper proposes the concept of affective practices to theorise how affect is mobilised in materially

The onto-politics of entrepreneurial experimentation: re-reading Hans-Jörg Rheinberger’s understanding of ‘experimental systems’

In this article, we argue that there is a need to theorize the relationship between entrepreneurship and the political beyond the currently dominant neo-liberal and emancipatory narrative by turning to an onto-political conception of entrepreneurship based on the processes of entrepreneurial experimentation. In entrepreneurship studies, the relevance and the potential of experimentation for shapin

How a landscape is seen and heard

This is a thesis exploring and comparing four different GIS-based viewscape analysis methods, as well as delving into GIS-based soundscape both in practice and theory. The use of these methods leads to a discussion about their utility for gaining new knowledge about past landscapes and possibilities to create phenomenological studies using GIS-based software. The case study is the old Bosebo churc

Magnitude and timing of acceleration peaks in stressed and unstressed syllables

Segment transitions can be accounted for by acceleration peaks, which appear at the edges of articulatory speech postures. The present study builds on previous research on timing of acceleration, and expands it by investigating magnitude of acceleration peaks at segment offset, comparing stressed and unstressed syllables. Acceleration peaks of lower lip and lower jaw are measured on ten Swedish sp

Collecting Mandible Movement in Brazilian Portuguese

This paper reports on a corpus of Brazilian Portuguese (BP) mandible movements. The data was collected using a recently available technique, the MARRYS helmet, which allows for quick and reliable collection of mandible data of a large number of speakers. Audio and mandible were recorded from more than 90 L1 and L2 BP speakers. The recording process and signal synchronization are presented. A parti

Risk-Sharing and Land Misallocation

We study the impact of incomplete consumption risk-sharing on land misallocationin rural economies. We develop a general equilibrium model of land cultivationchoices, where heterogeneous agricultural households face idiosyncratic outputshocks and insure themselves by participating in a risk-sharing arrangement. Incomplete insurance distorts households’ choices, leading them away from maximizing ex

Understanding transience and participation in university student-led food gardens

In an increasingly mobile world, transience is becoming the norm. Sustainable community food initiatives, therefore, must organise to withstand high turnover of volunteers. Using a case study of the United Kingdom's National Union of Students' food growing scheme in universities, this paper aims to map the causes and effects of short-term, irregular, and low participation using a causal loop diagr