Browsing by Author "Persson, David"

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100% ren bomull - Hur marknadsföring av miljömärkta kläder kan skapa konkurrensfördelar för en stor klädkedja
(2009-12-16T14:04:41Z) Larsson, Sofia; Persson, David; University of Gothenburg/Department of Business Administration; Göteborgs universitet/Företagsekonomiska institutionen
Avläsning av EEG-data från Emotiv Epoc X för ett SSVEP-baserat braincomputer interface för att spela Snake
(2021-09-14) Erenstedt, Carl; Ohlin, Alexander; Persson, David; Pihlquist, Gustav; Widén, Samuel; Yechouh, Carlos; Göteborgs universitet/Institutionen för data- och informationsteknik; University of Gothenburg/Department of Computer Science and Engineering
Denna rapport beskriver arbetet med att utforma ett BCI som kan styra datorspelet Snake i realtid. Spelet styrs genom att inducera steady state visually evoked potentials i hjärnan via flimrande stimuli av vissa frekvenser. Den resulterande elektriska aktiviteten i hjärnan läses sedan ut med hjälp av elektroencefalografi via Emotiv Epoc X. Slutligen tolkas informationen till specifika instruktioner med antingen Canonical Correlation Analysis eller ett Convolutional Neural Network och används för att styra spelet. Den resulterande programvaran visar potentialen av BCI i realtidskontrollerade videospel men ytterligare studier behövs för att hitta de optimala situationerna för bästa noggrannhet och responstid. Slutsatsen visar att Canonical Correlation Analysis fungerar bra till detta syfte, samt att Convolutional Neural Network inte passar lika bra då mängden data som krävs för träning inte var tillräcklig.
The Diffusion of Shared Service Centers – Based on Rational Arguments or Trends? A Case Study of the Motives and Decision-Making Process at Four Organizations
(2012-06-08) Persson, David; Göransson, Philip; University of Gothenburg/Department of Business Administratio; Göteborgs universitet/Företagsekonomiska institutionen
Background and problem: A palpable trend in organizations today is to centralize several finance departments and create a shared service center (SSC). Few previous studies have examined the motives behind this, and those that have often seem to implicitly assume that the motives are based on rational decision-making. As management ideas are known to spread as trends, we question the view that only rational motives are behind organizations adopting an SSC. Aim of study: The aim of this thesis is to investigate the motives behind the implementation of an SSC and understand if the decisions to implement shared services are based solely on rational motives or if trends are a factor as well. Methodology: Our case study is based on data collected at four different organizations that have implemented an SSC. At each organization, we conducted one semi-structured interview with a key person. Conclusions: We conclude that all four organizations have rational motives for implementing shared services. The main motive for all organizations was to save resources, either to use to focus on core activities or as a goal in itself (cost savings). The decision-making process behind the implementation was swift and it seems as though an SSC was seen as an obvious solution that did not require much investigation. To some extent, we believe that this had to do with external factors, such as trends. If SSCs were not a commonly used management idea, we believe that our studied organizations would have spent more time investigating whether to implement it. Thus, this suggests that their decision-making processes are not entirely rational.