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  • A.V., Fidalgo, et al. (författare)
  • Adapting remote labs to learning scenarios Case studies using VISIR and remotElectLab
  • 2014
  • Ingår i: Revista Iberoamericana de Tecnologias del Aprendizaje. - 1932-8540. ; 9:1, s. 33-39
  • Tidskriftsartikel (refereegranskat)abstract
    • Remote laboratories are an emergent technological and pedagogical tool at all education levels, and their widespread use is an important part of their own improvement and evolution. This paper describes several issues encountered on laboratorial classes, on higher education courses, when using remote laboratories based on PXI systems, either using the VISIR system or an alternate in-house solution. Three main issues are presented and explained, all reported by teachers, that gave support to students' use of remote laboratories. The first issue deals with the need to allow students to select the actual place where an ammeter is to be inserted on electric circuits, even incorrectly, therefore emulating real-world difficulties. The second one deals with problems with timing when several measurements are required at short intervals, as in the discharge cycle of a capacitor. In addition, the last issue deals with the use of a multimeter in dc mode when reading ac values, a use that collides with the lab settings. All scenarios are presented and discussed, including the solution found for each case. The conclusion derived from the described work is that the remote laboratories area is an expanding field, where practical use leads to improvement and evolution of the available solutions, requiring a strict cooperation and information-sharing between all actors, i.e., developers, teachers, and students.
  • Aaboen, Lise, et al. (författare)
  • Nourishment for the piggy bank: facilitation of external financing in incubators
  • 2011
  • Ingår i: International Journal of Technology Transfer and Commercialisation (IJTTC). - 1470-6075. ; 10:3/4, s. 354-374
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper, we argue that incubators facilitate access to external financing for their incubatees. Incubators use a wide range of activities to facilitate the accessing of external financing from public and private sources. We have grouped these into two sets of activities. The general activities aim to develop the conditions for external financing through information, education of incubatees, network-building and lobbying activities. The specific activities aim to assist the individual incubatee in their pursuit of external finance through help in application procedures, establishing need for capital, making contacts with the best public or private investor, etc. Based on the survey data, we have also shown that it is more common for incubatees to attract external capital compared to non-incubator firms. The incubatees seem especially successful in attracting public capital. The incubatees also attract more private external capital, however, the observed frequency of private capital in the incubatees are low.
  • Abarkan, Abdellah (författare)
  • The study of urban form in Sweden
  • 2009
  • Ingår i: Urban Morphology. - 1027-4278. ; 13:2, s. 121-127
  • Tidskriftsartikel (refereegranskat)abstract
    • Early research on urban form in Sweden was undertaken before the First World War. After the Second World War research was influenced by the major criticisms levelled at comprehensive urban renewal and suburban mass housing. These criticisms were particularly on the ground that values embodied in the traditional built environment were being ignored. Increased interest in the study of historical urban fabrics was associated with the development of methodologies reliant on the concepts of typology and morphology. These development were dependent on the activities of individual researchers until the very recent development of wider co-ordinating research organizations.
  • Aceijas, Carmen, et al. (författare)
  • Teaching Ethics in Schools of Public Health in the European Region
  • 2012
  • Ingår i: Public Health Reviews. - 2107-6952. ; 34:1
  • Tidskriftsartikel (refereegranskat)abstract
    • A survey targeting ASPHER members was launched in 2010/11, being a first initiative in improving ethics education in European Schools of Public Health. An 8-items questionnaire collected information on teaching of ethics in public health. A 52% response rate (43/82) revealed that almost all of the schools (95% out of 40 respondents with valid data) included the teaching of ethics in at least one of its programmes. They also expressed the need of support, (e.g.: a model curriculum (n=25), case studies (n=24)), which indicates further work to be met by the ASPHER Working Group on Ethics and Values in Public Health.
  • Adams, R, et al. (författare)
  • What is the word for engineering in Swedish students conception of their discipline
  • 2007
  • Annan publikation (övrigt vetenskapligt)abstract
    • Engineering education in Sweden as in the rest of the world is experiencing a decline in student interest. There are concerns about the ways in which students think about engineering education, why they join an academic programme in engineering, and why they persist in their studies. In this context the aims of the Nationellt ämnesdidaktiskt Centrum för Teknikutbildning i Studenternas Sammanhang project (CeTUSS) is to investigate the student experience and to identify and support a continuing network of interested researchers, as well as in building capacity for disciplinary pedagogic investigation. The Stepping Stones project brings together these interests in a multi-researcher, multi-institutional study that investigates how students and academic staff perceive engineering in Sweden and in Swedish education. The first results of that project are reported here. As this study is situated uniquely in Swedish education, it allows for exploration of a Swedish perspective on conceptions of engineering. The Stepping Stones project was based on a model of research capacity-building previously instantiated in the USA and Australia (Fincher & Tenenberg, 2006).
  • Adolfsson, Stefan, et al. (författare)
  • A Sequential Probability Ratio Test Method for Quality Monitoring in Robotised GMA Welding
  • 1997
  • Ingår i: Proceedings of the 1997 15th International Modal Analysis Conference : IMAC-XV. - 0-912053-53-4 ; s. vol 2, 1622-1628
  • Konferensbidrag (refereegranskat)abstract
    • This paper deals with the problem of automatic monitoring the weld quality when welding with Gas Metal Arc (GMA) in short circuiting mode. Experiments with two different types of T-joints are performed in order to provoke optimal and non-optimal welding conditions. During the experiments, voltage and current are measured from the welding process. A simple statistical change detection algorithm for the weld quality, the repeated Sequential Probability Ratio Test (SPRT), is used. The algorithm can equivalently be viewed as a cumulative sum (CUSUM) - type test. The test statistics is based upon the fluctuations of amplitude in the weld voltage. It is shown that the fluctuations of the weld voltage amplitude decreases when the welding process is not operating under optimal condition. The results obtained from the experiments indicate that it is possible to detect changes in the weld quality automatically and on-line.
  • Adolfsson, Stefan, et al. (författare)
  • Automatic detection of burn-through in GMA welding using a parametric model
  • 1996
  • Ingår i: Mechanical Systems and Signal Processing. - Academic Press. - 0888-3270 .- 1096-1216. ; 10:5
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper addresses the problem of automatic detection of burn-through in weld joints. Gas metal arc (GMA) welding with pulsed current is used, and welding voltage and current are recorded. As short-circuitings are common between the welding electrode and the work piece during burn-through, a short-circuit detector is developed to detect these events. To detect another specific characteristic of burn-through - this detector is combined with a square-law detector. This second detector is based on a non-linear modification of an autoregressive model with extra input (ARX-model) of the welding process. The results obtained from this compound detector indicate that it is possible to detect burn-through in the welds automatically. The work also indicates that it is possible to design an on-line monitoring system for robotic GMA welding.
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