| 11. |
- Larsson, Per-Olof, 1948
(författare)
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Arbete för personer med intellektuella funktionshinder
- 2009
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Ingår i: Forskningspresentation vid Arbetslivskonferens – Ett arbetsliv för alla 18-19 mars 2009 Mimerskolan i Umeå anordnad av Luleå kommun, Umeå Universitet, Regionalt Utvecklingscentrum vid Umeå Universitet och Umeå Kommun..
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 12. |
- Lindberg, Staffan I, 1969
(författare)
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V-Dem: Rationale, Theory and Prospects
- 2013
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Ingår i: American University if Central Asia, Bishkek, 15 January.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 13. |
- Löfhede, Johan, 1978, et al.
(författare)
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Detection of bursts in the EEG of post asphyctic newborns
- 2006
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Ingår i: 2006 28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. - 1557-170X. - 9781424400324 ; , s. 2179-2182, s. 5-6
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Konferensbidrag (refereegranskat)abstract
- Eight features inherent in the electroencephalogram (EEG) have been extracted and evaluated with respect to their ability to distinguish bursts from suppression in burst-suppression EEG. The study is based on EEG from six full term infants who had suffered from lack of oxygen during birth. The features were used as input in a neural network, which was trained on reference data segmented by an experienced electroencephalographer. The performance was then evaluated on validation data for each feature separately and in combinations. The results show that there are significant variations in the type of activity found in burst-suppression EEG from different subjects, and that while one or a few features seem to be sufficient for most patients in this group, some cases require specific combinations of features for good detection to be possible.
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| 14. |
- Bangalore, Pramod, 1983, et al.
(författare)
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Analysis of SCADA data for early fault detection with application to the maintenance management of wind turbines
- 2016
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Ingår i: CIGRE Session 46. - : CIGRE. ; , s. 1-10
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Konferensbidrag (refereegranskat)abstract
- During the past decade wind turbines have proven to be a promising source of renewable power. Wind turbines are generally placed in remote locations and are subject to harsh environmental conditions throughout their lifetimes. Consequently, the failures in wind turbines are expensive to repair and cause loss of revenue due to long down times. Asset management in wind turbines can aid in assessing and improving the reliability and availability of wind turbines, thereby making them more competitive. Maintenance policies play an important role in asset management and different maintenance models have been developed for wind turbine applications. Typically, mathematical models for maintenance optimization provide either an age based or a condition based preventive maintenance schedule. Age based preventive maintenance schedules provide the owner with the possibility to financially plan for maintenance activities for the entire lifetime of the wind turbine by providing the expected number of replacements for each component. However, age based preventive maintenance schedule may not consume the operating life of the wind turbine components to the maximum. Condition based maintenance scheduling has the advantage of better utilizing the operating life of the components. This paper proposes a wind turbine maintenance management framework which utilizes operation and maintenance data from different sources to combine the benefits of age based and condition based maintenance scheduling. This paper also presents an artificial neural network (ANN) based condition monitoring method which utilizes data from supervisory control and data acquisition (SCADA) system to detect failures in wind turbine components and systems. The procedures to construct ANN models for condition monitoring application are outlined. In order to demonstrate the effectiveness of the ANN based condition monitoring method it is applied to case studies from real wind turbines. Furthermore, a mathematical model called preventive maintenance schedule with interval costs (PMSPIC) is discussed and its application to a case study within the maintenance management framework is presented. The case study demonstrates the advantage of combining both the age based and condition based maintenance scheduling methods.
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| 15. |
- Falkman, Göran, 1968-, et al.
(författare)
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Collaboration Patterns in an Online Community of Practice in Oral Medicine
- 2008
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Ingår i: eHealth Beyond the Horizon – Get IT There. - Amsterdam : IOS Press. - 9781586038649 ; 136, s. 175-80
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Konferensbidrag (refereegranskat)abstract
- SOMWeb is an online collaboration system based on Semantic Web technologies, which is used for knowledge sharing and dissemination within an oral medicine community in Sweden. Based on a previous study of the use of SOMWeb, general patterns of interaction and communicative activities involved in community collaboration have been identified. The patterns for one such activity, distance consultation, are described and modeled using techniques from the Pragmatic Web. It is also shown how patterns could inform system design
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| 16. |
- Burström, Lage, 1954-, et al.
(författare)
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Acute effects of vibration on thermal perception thresholds
- 2006
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Ingår i: Diagnosis of injuries caused by hand-transmitted vibration - 2nd International workshop, Göteborg, 2006. - : Springer Science and Business Media LLC.
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Konferensbidrag (refereegranskat)abstract
- Objective This study focuses on the acute effects of vibration and how vibrations influence the measures of the thermal perception thresholds during different vibration magnitudes, frequencies, and durations.Methods The fingers of ten healthy subjects, five males and five females, were exposed to vibration under 16 conditions with a combination of different frequency, intensity and exposure time. The vibration frequency was 31.5 and 125 Hz and exposure lasted between 2 and 16 min. The energy-equivalent frequency weighted acceleration, according to ISO 5349-1, for the experimental time of 16 min was 2.5 or 5.0 m/s(2) (r.m.s.), corresponding to a 8-h equivalent acceleration, A(8) of 0.46 and 0.92 m/s(2), respectively. A measure of the thermal perception of cold and warmth was conducted before the different exposures to vibration. Immediately after the vibration exposure the acute effect was measured continuously on the exposed index finger for the first 75 s, followed by 30 s of measures at every minute for a maximum of 10 min. If the subject's thermal thresholds had not recovered, the measures continued for a maximum of 30 min with measurements taken every 5 min.Results For all experimental conditions and 30 s after exposure, the mean changes of the thresholds compared with the pre-test were found to be 0.05 and -0.67C for the warmth and cold thresholds, respectively. The effect of the vibration exposure was only significant on the cold threshold and only for the first minute after exposure when the threshold was decreased. The warmth threshold was not significantly affected at all. The frequency and the exposure time of the vibration stimuli had no significant influence on the perception thresholds for the sensation of cold or warmth. Increased equivalent frequency weighted acceleration resulted in a significant decrease of the subjects' cold threshold, not the warmth. The thresholds were unaffected when changes in the vibration magnitude were expressed as the frequency weighted acceleration or the unweighted acceleration.Conclusion When testing for the thermotactile thresholds, exposure to vibration on the day of a test might influence the results. Until further knowledge is obtained the previous praxis of 2 h avoidance of vibration exposure before assessment is recommended.
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| 17. |
- Hallgren, Hanna, 1972-, et al.
(författare)
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Translating 51 days
- 2015
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Ingår i: PARSE Conference, Nov 4-6, 2015 The 1st PARSE Biennial Research Conference on TIME, Göteborgs Universitet & Platform for Artistic Research Sweden An international initiative based at the University of Gothenburg, Sweden, aimed at supporting a multidisciplinary research culture – exploring the contemporary challenges of artistic research and the dialogue between research in the arts and research in other disciplines and domains..
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Konferensbidrag (refereegranskat)abstract
- In the summer of 2014 poets Somaya El-Sousi, Hanna Hallgren and Jenny Tunedal were working together in a translation workshop via skype that had been ongoing for more than a year. When war broke out in Gaza, where El-Sousi lives and works, this translation workshop transformed into a daily conversation on war, despair, food, rooms, objects, women, children, mothers, intimacy, fear, news, weather and writing.The differences and distances always present in translation work became enhanced and acute, as did a sense of closeness. The circumstances of war cut into our work and somehow into the everyday quotidian life of Sweden; as a shock, as a difference, as an acute experience of a lack of experience. The computer screen became, in El-Sousis words: “a blue window of hope”; the hope of continuing, linearity, future.Continuity is complicated for anyone living in Gaza. Life is a secluded incarceration not only in space but maybe even more so in time. Future as well as political and personal history are constantly being cut off from and / or conditioned by a claustrophobic present. The disaster that war is adds enormous pressure and fear to this present, to the extend were chronological time seems almost entirely dissolved.We would like to examine this sense of time and how it conditions the work of female writers in Gaza. We have gathered literary texts by women living in Gaza that were written during the 51 days of war and aim to perform a reading of how the temporality of war becomes readable, and possibly shareable, in these texts; as structure, as experience, as knowledge, as the unanswerable question: ”How long is that night, how hard is that darkness?” (from Somaya El-Sousis “It does not end”, written in late July 2014)Our work and our friendship takes place on skype. During the conference we would like to use skype and together, yet apart, perform a poetic conversation piece on the temporality of war, of literature, of translation and of friendship.
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| 18. |
- Hallgren, Hanna, 1972-, et al.
(författare)
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Writing during war : Keynote
- 2014
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Ingår i: Exitable Writing, 8-10 December 2014, Linköpings University. - : Linköpings Universitet.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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| 19. |
- Hansson, Karin, et al.
(författare)
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“We passed the trust on” : Strategies for security in #MeToo activism in Sweden
- 2020
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Ingår i: ECSCW 2019 - Proceedings of the 17th European Conference on Computer Supported Cooperative Work. - : European Society for Socially Embedded Technologies (EUSSET). - 2510-2591.
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Konferensbidrag (refereegranskat)abstract
- The #metoo movement can serve as a case for how networked online environments can provide settings for the mobilization of social movements, while also entail serious risks for those involved. In Sweden, over hundred thousand people were engaged in activities against sexual harassments and abuse, where social media were used to collect testimonies and to draft and discuss petitions that were later published in print news media. While HCI research on trust focus on how people trust technical systems, the authorities behind the system, or the user generated data, trust between peers in vulnerable communities is less researched. In this study, based on semi-structured interviews and a survey that involved 62 organizers of the Swedish #metoo movement, we therefore look into the question of how a secure and supportive environment was achieved among participants despite the scale of the activism. The result shows how trust was aggregated over networks of technical systems, institutions, people, shared values and practices. The organizers of the petitions used tools and channels at their disposal such as e.g. already established social media contexts that enabled the #metoo petitions to be formed easily and spread quickly. Establishing a supportive culture based on recognition and shared values was central for the movement. However, when the activism was scaled up, strategies were used to increase security by clarifying rules and roles, limiting access to information, restricting access to groups, and limiting the scope of communication.
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| 20. |
- Håkansson, Maria, et al.
(författare)
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Facilitating Mobile Music Sharing and Social Interaction with Push!Music
- 2007
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Ingår i: Proceedings of the 40th Hawaii International Conference on System Sciences. - Los Alamitos, Calif. : IEEE Computer Society Washington. - 1530-1605. - 0769527558 ; , s. 87-
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Konferensbidrag (refereegranskat)abstract
- Push!Music is a novel mobile music listening and sharing system, where users automatically receive songs that have autonomously recommended themselves from nearby players depending on similar listening behaviour and music history. Push!Music also enables users to wirelessly send songs between each other as personal recommendations. We conducted a two-week preliminary user study of Push!Music, where a group of five friends used the application in their everyday life. We learned for example that the shared music in Push!Music became a start for social interaction and that received songs in general were highly appreciated and could be looked upon as 'treats'.
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