Search results for " method"

On-Orbit Degradation of Solar Instruments

2013

International audience; We present the lessons learned about the degradation observed in several space solar missions, based on contributions at the Workshop about On-Orbit Degradation of Solar and Space Weather Instruments that took place at the Solar Terrestrial Centre of Excellence (Royal Observatory of Belgium) in Brussels on 3 May 2012. The aim of this workshop was to open discussions related to the degradation observed in Sun-observing instruments exposed to the effects of the space environment. This article summarizes the various lessons learned and offers recommendations to reduce or correct expected degradation with the goal of increasing the useful lifespan of future and ongoing s…

Computational Rationality as a Theory of Interaction

2022

Funding Information: This work was funded by the Finnish Center for AI and Academy of Finland (“BAD” and “Human Automata”). We thank our reviewers, Xiuli Chen, Joerg Mueller, Christian Guckelsberger, Sebastiaan de Peuter, Samuel Kaski, Pierre-Alexandre Murena, Antti Keuru-lainen, Suyog Chandramouli, and Roderick Murray-Smith for their comments. Publisher Copyright: © 2022 ACM. How do people interact with computers? This fundamental question was asked by Card, Moran, and Newell in 1983 with a proposition to frame it as a question about human cognition - in other words, as a matter of how information is processed in the mind. Recently, the question has been reframed as one of adaptation: how …

Sosiaalityön ammattilaisten tyypilliset työurapolut ja ura-ankkurit

2012

Tutkimuksen tavoitteena oli selvittää, minkälaisia ovat sosiaalityön ammattilaisten tyypilliset työurapolut ja miten erilaiset polut eroavat toisistaan urakehitykseen vaikuttavien ura-ankkureiden suhteen. Ura-ankkurit kuvaavat itse havaittuja kykyjä, motiiveja ja arvoja, jotka vaikuttavat työelämässä toimimiseen. Työurapolun etenemistä hahmotettiin erilaisten horison-taalisten ja vertikaalisten siirtymien kautta. Tutkimus toteutettiin mixed methods -lähestymistapaa hyödyntäen. Siinä yhdistetään laadulli-sen ja määrällisen tutkimuksen elementtejä monipuolisemman kuvan saamiseksi aiheesta. Tässä tutkimuksessa kvalitatiivinen toimintahistoria-kysymys liitettiin kvantitatiiviseen kyse-lylomakke…

To embody or not to embody: A sound design dilemma

2019

Designing with sound is about constructing appropriate sound representations of a concept, from the early ideas to the final product. A survey research on embodied sound sketching is presented, and the problems of early representation in sound design are discussed by analysing the questionnaire results of three workshops on vocal sketching.

Effect of Cycloplegia on Blur Perception Thresholds as Measured by Source Method

2017

Abstract One of the advantages of a source method over observer method in blur perception measurements is better control of a stimulus blur level, which is achieved with computerised image processing unlike the observer method that requires optical defocusing of the observer. The aim of this study was to determine if paralysation of accommodation has effect on blur perception thresholds, thereby evaluating its necessity in such experiments. Blur perception thresholds (just noticeable blur, clear image, recognition, and non-resolvable blur thresholds) were evaluated with (using cycloplegia) and without paralysed accommodation to determine effect on blur perception. A computerised low-pass sp…

Hierarchies of knowledge, incommensurabilities and silences in South African ECD policy: Whose knowledge counts?

2017

AbstractPolicy for young children in South Africa is now receiving high-level government support through the ANC’s renewed commitment to redress poverty and inequity and creating ‘a better life for all’ as promised before the 1994 election. In this article, I explore the power relations, knowledge hierarchies and discourses of childhood, family and society in National Curriculum Framework (NCF) as it relates to children’s everyday contexts. I throw light on how the curriculum’s discourses relate to the diverse South African settings, child rearing practices and world-views, and how they interact with normative discourses of South African policy and global early childhood frameworks. The NCF…

Revealing colonial power relations in early childhood policy making: An autoethnographic story on selective evidence

2021

The COVID-19 pandemic exposes uncertainty, instability and glaring inequality that requires urgent global policy decisions. Historically, bureaucrats regard uncertainty as the enemy and look for tested solutions (Stevens, 2011). In contrast, Fielding & Moss (2010) acknowledge an uncertain future and encourage shifting policy making towards the search for possibilities instead of replicating singular solutions. Escobar (2020) advocates for pluriversal politics, with many possibilities created through collective decision-making by autonomous interlinked networks. In this paper, I combine autoethnography with policy analysis drawing on my own experience in South African early childhood pol…

Numerical simulation of fluid-structure interaction between acoustic and elastic waves

2011

Kodittomuuksia nuorten mielenterveyskuntoutujien draamaryhmässä

2019

The Industrial Applicability of PEA Space Charge Measurements, for Performance Optimization of HVDC Power Cables

2019

Cable manufacturing industries are constantly trying to improve the electrical performance of power cables. During the years, it was found that one of the most relevant degradation factors influencing the cable lifetime is the presence of space charge in the insulation layer. To detect the accumulated charge, the pulsed electro-acoustic (PEA) method is the most used technique. Despite the wide use of the PEA cell, several issues are still present. In particular, the PEA output signal is strongly disturbed by the acoustic waves reflections within the PEA cell. This causes the distortion of the output signal and therefore the misinterpretation of the charge profiles. This, in turn, may result…