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Sökning: swepub > Umeå universitet > Riboli Elio

  • Resultat 1-10 av 512
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1.
  • Gaye, Lalya, et al. (författare)
  • Sonic City: the urban environment as a musical interface
  • 2003. - 7
  • Ingår i: Proceedings of NIME 03. ; , s. 109-115
  • Konferensbidrag (refereegranskat)abstract
    • In the project Sonic City, we have developed a system that enables users to create electronic music in real time by walking through and interacting with the urban environment. We explore the use of public space and everyday behaviours for creative purposes, in particular the city as an interface and mobility as an interaction model for electronic music making. A multi-disciplinary design process resulted in the implementation of a wearable, context-aware prototype. The system produces music by retrieving information about context and user action and mapping it to real-time processing of urban sounds. Potentials, constraints, and implications of this type of music creation are discussed.
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2.
  • Wersäll, Britt-Louise, 1944- (författare)
  • Samhällsförändringar och nya lärarroller
  • 2003
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • I denna rapport beskrivs översiktligt ett flertal samhällsförändringar, vilka varit av betydelse för att skapa och förändra nya sociala och kulturella lärarroller. Beskrivningen grundar sig på såväl svensk som internationell forskning. Följande problemställningar har väglett översikten. Vilka är samhällsförändringarnas innebörd och vilka konsekvenser har de haft för lärares arbete? Vilka hinder eller möjligheter för lärare utpekas av forskarna? Vad orsakar lärares utbrändhet och hur kan denna motverkas? Vad betyder ny informations- och kommunikationsteknik (IKT) för lärares roller? En viktig slutsats är att skola och lärare borde få mer resurser till kompetensutveckling för att klara de nya sociala och kulturella rollerna, särskilt med tanke på fostran, mångkulturalism och kommunikationspedagogik. Lärare borde även få träna i proaktiv stresshantering för att minska risken för senare utbrändhet. Ifråga om IKT behövs mer ideologisk reflektion, mål- och värdeinriktning samt pedagogisk och organisatorisk vidareutveckling.
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4.
  • Ananthanarayanan, Durga, et al. (författare)
  • Grain Structure Prediction for Directionally Solidified Superalloy Castings
  • 2020
  • Ingår i: JOM. - : Springer Nature. - 1047-4838 .- 1543-1851. ; 72:5, s. 1785-1793
  • Tidskriftsartikel (refereegranskat)abstract
    • A highly parallelized mesoscale solidification model based on a cellular automaton method was coupled with a macroscale process model to predict grain structure during directional solidification. The macroscale thermal model and a nucleation parameter (maximum nucleation density) for René N500 were verified and calibrated using temperature profiles obtained via thermocouples in step-geometry castings and grain structures analyzed by electron backscatter diffraction (EBSD), respectively. The calibrated model was then applied to a laboratory-scale turbine blade to predict its grain structures. The predicted grain sizes agreed with experimental measurements under different casting conditions. The established bulk nucleation parameter based on the simple geometry can be directly transferred to complex geometries. Grain calculations without accurate estimations of nucleation on the chill plate can still provide reasonably good predictions. Overall, a viable path to calibrate model inputs for grain structure models based on simple geometry, where faster iterations can be achieved, is demonstrated.
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6.
  • Ribeiro, Luis, et al. (författare)
  • Exploring the network dimension of diagnosis in Evolvable Production Systems
  • 2010
  • Ingår i: Emerging Technologies and Factory Automation (ETFA), 2010 IEEE Conference on Date 13-16 Sept. 2010. - : IEEE. - 9781424468485 ; , s. 1-6
  • Konferensbidrag (refereegranskat)abstract
    • Modern Production Paradigms, supported by state-of-art developments in IT, present major opportunities for the effective implementation of sustainable shop floors. With an increased focus in seamless system reconfiguration most proposals advocate the use of modular and distributed architectures that are dynamic compositions (adaptable and evolvable structures) of cooperating self-contained entities that interact using complex communication patterns with enhanced semantics. These design principles introduce significant diagnostic challenges. The distributed and contained nature of the information renders collective fault events harder to track. Furthermore, current approaches that are adjusted to a more conservative logic-based control, do not provide an adequate response to this problem. This paper proposes an approach to capture the network dynamics of faults in the emergent domain of Evolvable Production Systems (EPS) which implements and extends the before-mentioned characteristics.
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8.
  • Aleksandrova, Krasimira, et al. (författare)
  • A prospective study of the immune system activation biomarker neopterin and colorectal cancer risk
  • 2015
  • Ingår i: Journal of the National Cancer Institute. - : Oxford University Press. - 0027-8874 .- 1460-2105. ; 107:4
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Neopterin may be relevant for colorectal cancer (CRC) development, as a biomarker of cellular immune activity exerting pleiotropic effects on cellular ageing, oxidative stress, and inflammation. So far, the association between prediagnostic neopterin and colon and rectal cancer risk has not been evaluated in human populations. Methods: A nested case-control study was conducted within the European Prospective Investigation into Cancer and Nutrition cohort using data on plasma concentrations of total neopterin (T-N, sum of neopterin and 7,8-dihydroneopterin) in 830 incident CRC case patients (561 colon and 269 rectal) matched within risk sets to 830 control participants. A subsequent replication study used data from the Hordaland Health Study, where 173 CRC case patients have been diagnosed among 6594 healthy participants over 12 years of follow-up. Results: After multivariable adjustment for a priori chosen CRC risk factors, a "U-shaped" association of T-N with CRC was revealed. Compared with the second quintile of the T-N distribution, the relative risks for the first, third, fourth, and fifth quintiles were 2.37 (95% CI = 1.66 to 3.39), 1.24 (95% CI = 0.87 to 1.77), 1.55 (95% CI = 1.08 to 2.22), and 2.31 (95% CI = 1.63 to 3.27), respectively. Replication of these associations within the Hordaland Health Study yielded similar results. No differences have been observed when the associations were explored by colon and rectal cancer site (two-sided P-difference = .87) and after excluding case patients diagnosed within the first four follow-up years. Conclusions: These novel findings provide evidence of the role of both suppressed and activated cell-mediated immunity as reflected by prediagnostic T-N concentrations in the development of CRC.
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10.
  • Dudrova, Eva, et al. (författare)
  • MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Fe-Cr-Mo-[Cu-Ni]-C SINTERED STEELS
  • 2010
  • Ingår i: Acta Metallurgica Slovaca - Conference. - 1338-1660. ; 1, s. 580-585
  • Tidskriftsartikel (refereegranskat)abstract
    • The effect of high-temperature vacuum sintering (11800C) integrated with high (6K/s), medium (3K/s) and slow (0.1K/s) cooling rates and conventional sintering at 11800C with cooling rate of ~0.17K/s on shifting the microstructural composition to significant portion of martensite-bainite and thus effective improvement of mechanical properties of Fe-Cr-Mo-[Cu-Ni]-C sintered steels (Astaloy Cr+1 and 2% Cu and/or 50% Distaloy AB powder was investigated. In dependence on chemical composition the yield and tensile strengths of 890-1150 MPa and 913-1230 MPa and impact energy of 10-15 J were achieved by sinter-hardening. The yield and tensile strengths were approximately double than those resulting from conventional sintering.
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