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Sökning: WFRF:(Persson Anders) > Engelska > Konferensbidrag > (2010-2013)

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1.
  • Persson, Henrik, et al. (författare)
  • B.E.A.C.O.N. - Beacon Emits Audio from Color, Or Not
  • 2013
  • Konferensbidrag (refereegranskat)abstract
    • People who suffer from dementia are often isolated due to lack of ways of communication. In many cases verbal communication can be difficult to perform at all. We created Beacon with the goal to let people with dementia interact with a very simple and intuitive control interface to give them a means of non-verbal communication, and let them take control over the soundscapes that Beacon is capable of producing. In this paper we describe our concept Beacon, its physical form and how the design makes it possible for a person with dementia to control the software by moving around items of different colors and sizes on its surface to create synthesized and sampled sounds. We hope that Beacon will produce positive results among people with dementia, and that the interaction will be rewarding.
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2.
  • Persson, Henrik, et al. (författare)
  • B.E.A.C.O.N. - Beacon Emits Audio from Color, Or Not
  • 2013
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • People who suffer from dementia are often isolated due to lack of ways of communication. In many cases verbal communication can be difficult to perform at all. We created Beacon with the goal to let people with dementia interact with a very simple and intuitive control interface to give them a means of non-verbal communication, and let them take control over the soundscapes that Beacon is capable of producing. In this paper we describe our concept Beacon, its physical form and how the design makes it possible for a person with dementia to control the software by moving around items of different colors and sizes on its surface to create synthesized and sampled sounds. We hope that Beacon will produce positive results among people with dementia, and that the interaction will be rewarding.
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5.
  • Axelsson, Emil, 1978, et al. (författare)
  • Feldspar: A Domain Specific Language for Digital Signal Processing algorithms
  • 2010
  • Ingår i: Eighth ACM/IEEE International Conference on Formal Methods and Models for Codesign. - 9781424478859 ; , s. 169-178
  • Konferensbidrag (refereegranskat)abstract
    • A new language, Feldspar, is presented, enabling high-level and platform-independent description of digital signal processing (DSP) algorithms. Feldspar is a pure functional language embedded in Haskell. It offers a high-level dataflow style of programming, as well as a more mathematical style based on vector indices. The key to generating efficient code from such descriptions is a high-level optimization technique called vector fusion. Feldspar is based on a low-level, functional core language which has a relatively small semantic gap to machine-oriented languages like C. The core language serves as the interface to the back-end code generator, which produces C. For very small examples, the generated code performs comparably to hand-written C code when run on a DSP target. While initial results are promising, to achieve good performance on larger examples, issues related to memory access patterns and array copying will have to be addressed.
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6.
  • Axelsson, Emil, 1978, et al. (författare)
  • The Design and Implementation of Feldspar: An Embedded Language for Digital Signal Processing
  • 2011
  • Ingår i: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). - Berlin, Heidelberg : Springer Berlin Heidelberg. - 1611-3349 .- 0302-9743. - 9783642242755 ; 6647, s. 121-136
  • Konferensbidrag (refereegranskat)abstract
    • Feldspar is a domain specific language, embedded in Haskell, for programming digital signal processing algorithms. The final aim of a Feldspar program is to generate low level code with good performance. Still, we chose to provide the user with a purely functional DSL. The language is implemented as a minimal, deeply embedded core language, with shallow extensions built upon it. This paper presents full details of the essential parts of the implementation. Our initial conclusion is that this approach works well in our domain, although much work remains.
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7.
  • Axelsson, Emil, 1978, et al. (författare)
  • The Design and Implementation of Feldspar: an Embedded Language for Digital Signal Processing
  • 2010
  • Ingår i: IFL 2010, the 22nd Symposium on Implementation and Application of Functional Languages.
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • Feldspar is a Domain Specific Language, embedded in Haskell, for programming Digital Signal Processing algorithms. The final aim of a Feldspar program is to generate low level code with good performance. Still, we chose to provide the user with a purely functional DSL. The language is implemented as a minimal, deeply embedded core language, with shallow extensions built upon it. This paper presents full details of the essential parts of the implementation. Our initial conclusion is that this approach works well in our domain, although much work remains.
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9.
  • Backman, Ylva, et al. (författare)
  • Philosophy with children : moral argumentation and the role of pictures
  • 2011
  • Ingår i: Educating for complex thinking through philosophical inquiry. - Padova : Liguori. ; , s. 12 s.-
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • The aim of this paper is to outline the disposition and results of a short-time pilot study (Backman, 2009) of pupils’ ability to express ethical arguments and of the role of pictures in ethical argumentation. There were 18 pupils, in the ages 7-8 years, that participated in the study, which was carried out in a school in the northern part of Sweden. In this paper, we begin by giving a short description of some relevant statements in the Swedish national curriculum and put this in relation to some previous research on philosophical inquiry with children. Then we continue by describing some of the project’s influences from philosophical practice and theoretical groundwork. After this, some methodological concerns and ethical considerations are referred. Finally, some results of the study are described and shortly discussed.
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10.
  • Batani, D., et al. (författare)
  • Effects of laser prepulse on proton generation
  • 2010
  • Ingår i: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. - : Elsevier BV. - 0168-9002. ; 620:1, s. 76-82
  • Konferensbidrag (refereegranskat)abstract
    • Low-intensity laser prepulse ( < 10(13) W/cm(2), ns duration) are a major issue in experiments on laser-generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W/cm(2), ps or fs duration) Several effects are associated to the prepulse and are discussed in this contribution: i) Destruction of thin foil targets by the shock generated by the laser prepulse ii) Creation of preplasma on target front side affecting laser absorption iii) Deformation of target rear side iv) Whole displacement of thin foil targets affecting focusing condition In particular, we show that under oblique high-intensity irradiation and for low prepulse intensities, the proton beam is directed away from the target normal. Deviation is towards the laser forward direction, with an angle that increases with the level and duration of the ASE pedestal. Also, for a given laser pulse, beam deviation increases with proton energy. The observations are discussed in terms of Target Normal Sheath Acceleration, in combination with a laser-controllable shock wave locally deforming the target surface. (C) 2010 Elsevier B.V. All rights reserved.
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