| 1. |
- Öwall, Viktor, et al.
(author)
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Controller synthesis for application specific digital signal processors
- 1991
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In: [Host publication title missing]. - 0780301013
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Conference paper (peer-reviewed)abstract
- A controller synthesizer, that is part of a design system by which algorithms unsuitable for standard processors can be implemented, is presented. A hierarchical controller architecture suitable for frame-based and multi-sample-rate algorithms is synthesized. Synthesis of a controller is based on micro instructions, specific for each architecture, and assumes no use of predefined functional blocks. The designer can affect complexity and partitioning of the controller by changing the micro program. Processors for speech scrambling and digital adjustment of quadrature modulators have been designed and fabricated.
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| 3. |
- Alfermann, D., et al.
(author)
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Reactions to sport career termination : A cross-national comparison of German, Lithuanian, and Russian athletes
- 2004
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In: Psychology of Sport And Exercise. - Amsterdam : Elsevier. - 1469-0292 .- 1878-5476. ; 5:1, s. 61-75
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Journal article (peer-reviewed)abstract
- Objectives: To assess the cognitive, emotional, and behavioural consequences of sport career termination of national and international level athletes in three nations.Design and methods: Athletes of Germany (n=88), Lithuania (n=65), and Russia (n=101) were asked to describe in retrospect their reactions to career termination. The Athletic Retirement Questionnaire developed by the first two authors and presented in three corresponding languages was used. Planning of retirement and national identity served as independent variables. Dependent variables were reasons and circumstances for career termination, participants’ emotional reactions, coping reactions, athletic identity during and after sport career, and adjustment to life after career termination.Results: Analyses of variance revealed significant main effects of retirement planning and national identity on most dependent variables. Planning of retirement contributed to significantly better cognitive, emotional, and behavioural adaptation. In addition, high athletic identity contributed to less positive reactions to retirement and to more problems in the adaptation process. The emotional reactions of Russian and Lithuanian athletes were similar, but differed from the German athletes who, in general, showed more positive and lesser negative emotions after retirement. Though accepting the reality of retirement was the most often used coping strategy among all participants, Lithuanian athletes showed more denial and Russian athletes more distraction strategies after retirement than the other nations.Discussion: The results are discussed with regard to athletes’ readiness for career transition in different social and cultural environments. Recommendations are given on how to help athletes to prepare for and to cope with career termination. © 2003 Elsevier Ltd. All rights reserved.
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| 4. |
- Lang, Xiao, 1992, et al.
(author)
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Comparison between full-scale measurements and numerical simulations of mooring forces in a floating point-absorbing wec system
- 2019
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In: Advances in Renewable Energies Offshore - Proceedings of the 3rd International Conference on Renewable Energies Offshore, RENEW 2018. ; , s. 865-873
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Conference paper (peer-reviewed)abstract
- The design of functional elastic mooring systems for floating point-absorbing Wave Energy Converters (WECs) is important for the WEC’s power capture, the durability and reliability of the mooring system. This study presents results from the OCEANERA-NET project ELASTMOOR where Waves4Power’s WEC WaveEL 3.0 is used as a reference case for full-scale measurements of mooring line forces. The elastic mooring system consists of three mooring legs, where each leg is divided into two mooring lines with an intermediate submerged floater. The WaveEL 3.0 WEC is installed outside Runde in Norway and its mooring forces have been measured continuously between June and November, 2017. A numerical simulation model of the full-scale installation has been developed in the DNV GL software SESAM. The study presents a comparison between the mooring forces from full-scale measurements and simulations for various environmental load conditions. The results are discussed with regards to uncertainties and the prediction capacity of the numerical model.
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| 7. |
- Gador, Niklas, et al.
(author)
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Dynamical interference structures in fully coupled bound-bound state quantum wave-packet dynamics
- 2004
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In: Physical Review A. Atomic, Molecular, and Optical Physics. - 1050-2947 .- 1094-1622. ; 70:3, s. 033418-
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Journal article (peer-reviewed)abstract
- The quantum wave-packet dynamics in a bound-bound state system at intermediate coupling strength, the A and b states in the Rb-2 molecule coupled by spin-orbit interaction, was studied by ultrafast pump-probe molecular beam spectrocopy and quantum dynamical calculations. It was shown that even at elevated molecular temperatures the experimentally observed traces are characterized by dynamical interference structures of mesobatic, i.e., diabatic-adiabatic hybrid, kind. Two types of mesobatic motion were discerned: bistable, which occurs in both bound-unbound and bound-bound systems, and astable, which is particular to bound-bound systems at intermediate coupling strength. Contrary to previous expectations, the signatures of the quantum interference structures in pump-probe delay traces were found to be robust toward averaging over initial quantum states. It was shown that the spectral variations observed while tuning the pump pulse wavelength is a quantum matter-wave relative of the fringes observed in a pulsed optical Michelson interferometer.
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| 8. |
- Brito, Rodrigo O., et al.
(author)
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Self-assembly in a catanionic mixture with an aminoacid-derived surfactant: From mixed micelles to spontaneous vesicles
- 2006
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In: The Journal of Physical Chemistry Part B. - : American Chemical Society (ACS). - 1520-5207 .- 1520-6106. ; 110:37, s. 18158-18165
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Journal article (peer-reviewed)abstract
- The aqueous self-assembly of a novel lysine-derived surfactant with a gemini-like architecture, designated here as 12-Lys-12, has been experimentally investigated for the amphiphile alone in water and in a mixture with dodecyltrimethylammonium bromide (DTAB). The neat surfactant forms interesting micrometer-sized rigid tubules in the dilute region, resulting in very viscous solutions. For the catanionic mixture with DTAB, various single and multiphase regions were identified (up to a total surfactant concentration of 1.5 wt %) by means of combined polarizing light microscopy, cryo-TEM, and NMR. In the DTAB-rich side, for a mixing molar ratio in the range 2 < DTAB/12-Lys-12 < 4, a region of stable, unilamellar vesicles can be found. Furthermore, it was found that upon addition of 12-Lys-12 to pure DTAB solutions, the mixed micelles grow and beyond a given mixing ratio, vesicles assemble and coexist with small micelles. The transition is not continuous, since there is a narrow mixing range where phase separation occurs. Self-diffusion measurements and cryo-TEM imaging show that the average vesicle radius is on the order of 30-40 nm.
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| 9. |
- Gilljam, Britt-Mari, 1957-, et al.
(author)
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Involving Children with Juvenile Idiopathic Arthritis in Health-Related Research – Why and How?
- 2015
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In: Annals of the Rheumatic Diseases. - London : BMJ Books. - 0003-4967 .- 1468-2060. ; 74:Suppl. 2, s. 1312-1312
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Journal article (peer-reviewed)abstract
- Background: Children with severe Juvenile idiopathic arthritis (JIA) are exposed to care situations and harsh treatments such as intra-articular corticosteroid injections (1). In order for these children to feel confidence, it is important they understand and feel they have control over the situation. To support the wellbeing of these children and their involvement in care, it is important to investigate their views of the care process and their everyday life (2).Objectives: The purpose of this study is to describe our experiences of using different activities and techniques during interviews with children with JIA.Methods: Children (n=23) from two rheumatic pediatric clinics in Sweden, age 8 - 17, diagnosed with JIA since at least two years were interviewed individually or in focus groups. All interviews focused on experiences and preferences of participating in care situations. Among the younger children, age 8 - 12, we used activities such as sentence completion, to express three wishes, draw and tell, and role-play with Barbie dolls. Among the older ones, age 13 – 17, we used sentence completion, to express three wishes and post-IT tabs for brainstorming and subsequent discussion. During all interviews we used open-ended questions.Results: Sentence completion and three wishes were two weak techniques for most of the children regardless of age. The younger children often responded to these techniques with silence or responses like “I don't know”. The older children responded with intense reflection and thinking, and predominately came up with one wish only. Techniques that were powerful in activating discussions were draw and tell and role-play with Barbie dolls for the younger children. Using Post-IT tabs and discussions was a good starter for discussions for the older children in focus groups.Conclusions: There is reason to reflect on what techniques researchers use when interviewing children, as the prospects of capturing children's perspectives in research is largely dependent on the researcher's ability to engage children in the interview situation. Different interview methods should be used depending on the age of the informants, the purpose of the investigation, and the capabilities, such as the health status, of the child. In this study, we experienced that the participants ability to express their experiences and preferences can be facilitated with practical techniques, like drawing and role-play with Barbie dolls for younger children and Post-IT tabs for children in older age groups.References:Bertilsson L. Andersson-Gäre B. Fasth A. Forsblad-d'Elia H. A 5-year prospective population-based study of juvenile chronic arthritis: onset, disease process, and outcome. Scandinavian journal of rheumatology 2012; 41(5): 379-382.Coyne I. Hayes E. Gallagher P. Regan G. Giving children a voice: investigation of children's experiences of participation in consultation and decision-making in Irish hospitals. Office of the Minister for Children 2006; 3576.Acknowledgements: Thanks to: The Swedish Rheumatic Foundation, Stig Thunes Foundation and Norrbacka Eugenia Foundation.Disclosure of Interest: None declared
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