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1.
  • Alberdi, A., et al. (författare)
  • The high-frequency compact radio structure of the peculiar quasar 4C 39.25
  • 1997
  • Ingår i: Astronomy and Astrophysics. - Springer-Verlag. - 0004-6361. ; 327:2, s. 513-521
  • Tidskriftsartikel (refereegranskat)abstract
    • We present new high angular resolution images of the compact non-thermal radio source 4C 39.25 obtained from VLBI observations at λ1.3cm, λ7mm, and λ3mm wavelengths. These maps and Gaussian model-fits show that the milli-arcsecond to sub-milliarcsecond structure of 4C 39.25 consists of a complex bent core-jet structure with embedded moving and stationary VLBI components. Facilitated by the small observing beams and high angular resolutions obtained at mm-wavelengths, we measured the relative positions of the jet components with an accuracy of a few hundred micro-arcseconds. This allows the detailed followup of the ongoing merging process of a westward superluminally moving component (b_) with a stationary component a_, located at ~2.9 mas east of the putative core d_. In contrast to the other components of the structure with steeper spectra, the westernmost component d_ exhibits an inverted spectrum peaking between λ7mm and λ3mm, thus further supporting its identification as the VLBI core, self-absorbed at longer wavelengths. From two VLBI maps obtained nearly simultaneously at λ7mm and λ1.3cm, we made the first spectral index map of 4C 39.25 in this wavelength regime. The main characteristics of the spectral index distribution of the jet are pronounced changes of the spectral index between orientations parallel and transverse to the jet axis. Near the merging components a_ and b_ the spectral index steepens with increasing separation from d_. However, in the bridge of emission c_, which connects d_ with a_ and b_, the spectral index gradient has a direction transverse to the jet axis, suggesting a frequency dependent jet curvature and edge-brightening. A brief discussion of this behaviour within current jet models is presented.
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3.
  • Andersson, Svante, 1962- (författare)
  • High growth Firms, Internationalization and Job Creation in Sweden
  • 1999
  • Konferensbidrag (refereegranskat)abstract
    • Principal TopicHigh growth firms have shown to be an important factor for creating jobs in the economy at large. It has therefore been an increasing interest in this phenomenon from media, politics and academia. In spite of a large research effort, the knowledge about this phenomenon is still limited because there are few common results regarding the factors of importance for the creation of high growth firms. Some researcher claim that the entrepreneurs’ characteristics and the firms network and microenvironment are important whereas other claim that institutions in society in large are the most important factors. The purpose of this study is to deeper investigate the characteristics of high growth firms and to explore the factors that can explain the development of those firms. As earlier studies about high growth firms in Sweden has shown a strong connection between growth and internationalization, the firms international development will be highlighted.MethodIn an earlier study seven different types of firms were identified based on secondary data. In this second study, deep case studies will be conducted to get a deeper understanding of why these firms grow. Here the elite of the elite of the different types, super growers, will be further investigated. Super growers achieve higher growth in sales, organic employment and total employment than other groups in absolute and relative terms. Super growers were over-represented in young and growing industries, such as the business system industry. Three Swedish companies in that industry are chosen as case companies. Historical and a real time information will be collected. Secondary data and personal interviews will be used. The different cases will be confronted with each other and different theoretical approaches will be confronted with the cases in order to generate new knowledge about high growth firms.ImplicationsThis research intends to have implication for academia, practitioners and policy makers. For academia this explorative research intends to identify which factors that are important to understand the phenomenon of high growth firms. Practitioners and policymakers can learn from these findings and if the intention is to create high growth and job creation, concentrate on actions that will favor that development.
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5.
  • Andersson, Svante (författare)
  • The Entrepreneur and Firm’s International Strategies
  • 1999
  • Ingår i: Images of Entrepreneurship and Small Business : Emergent Swedish Contributions to Academic Research. - Lund : Studentlitteratur. - 91-44-01256-X ; s. 241-265
  • Bokkapitel (populärvet., debatt m.m.)
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8.
  • Andersson, Svante, 1962- (författare)
  • The Network Perspective Its origin and differences to the Marketing Management approach
  • 1998
  • Ingår i: Australia and New Zealand Marketing Academy conference; Marketing connections. - Otago : Department of Marketing, University of Otago. - 1877156086 - 1877156078 ; s. 62-72
  • Konferensbidrag (refereegranskat)abstract
    • Relationship marketing during the nineties has become an accepted approach in marketing research. This type of marketing, however, consists of many different perspectives. Here, the network approach is covered. This perspective’s origin and its differences to the marketing management approach are discussed. It is concluded that the development of the network perspective was influenced by its Swedish context, however the network view is not pertinent on all marketing situations in Sweden. Finally it is argued that research in marketing should prosper with many different perspectives that could be applicable for different marketing situations.
9.
  • Aronsson, H., et al. (författare)
  • Characterization of the plastid import reaction of the pea NADPH-protochlorophyllide oxidoreductase (POR)
  • 1998
  • Ingår i: The Chloroplast : From Molecular Biology to Biotechnology. - New York : Springer-Verlag. - 9780792355779 - 0792355776 ; s. 167-170
  • Konferensbidrag (refereegranskat)abstract
    • NADPH: protochlorophyllide (POR) is a vital enzyme in the biosynthesis of chlorophyl where it catalyzes the reduction of Pchlide into Chlide in a light-dependent manner. POR is nucleus-encoded and imported into the plastids where it is found at the inner membranes. Together with its substrate and the co-factor NADPH it forms a ternary complex which is needed for catalytical activity. The anomaly of a decreasing POR level during active chlorophyll synthesis was cleared with the discovery of two different POR proteins, POR-A and POR-B, in barley and Arabidopsis thaliana. During greening, POR-A is negatively regulated by light both at transcriptional and proteolytical levels. In addition, the import of POR-A, but not POR-B, has been suggestedto require Pchlide in order to be translocated into the plastid. In this respect, POR-A differs from other known nucleus-encoded plastid proteins, and as it appears, this requirements represents a novel and exclusive import characteristic. In pea, only one POR gene has been found indicating that the situation for the regulation of POR import and accumulation is far from clear. We here present a characterization of the import conditions of the pea POR, including the potentional role of Pchlide inthe translocation step.
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10.
  • Backe, Marita, et al. (författare)
  • Patients’ conceptions of their life situation within the first week after a stroke event : A qualitative analysis
  • 1996
  • Ingår i: Intensive & Critical Care Nursing. - London : Churchill Livingstone. - 0964-3397 .- 1532-4036. ; 12:5, s. 285-294
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of this study was to find out how stroke patients conceived their life situation within the first week of the acute care phase as seen from the nurses’ viewpoint. Six patients were interviewed within 3 weeks from their first stroke, using questions based on a holistic philosophy and analysed with the phenomonographic approach. Two main categories emerged from the results: the feeling of unreality and the awareness of a changed role in life, together with six subcategories; feeling of a changed perception of the body; feeling of being confused; loss of capability; awareness of confined life space; the importance of support and encouragement; and the will to look for new opportunities. The study concludes that the body change resulting from a stroke leads to both physical and psychological trauma, in which the psychological crisis can be very deep and best described as a personal catastrophe. The patient’s capability to receive and understand information becomes blocked, which influences both the nurse and the patient’s next of kin with regard to their care of the patient. Conversations with the patient must be frequent so that the acute care can be evaluated and agreement reached between the patient’s wishes and the nurses’ objectives. The results indicate the significance of intervention programmes based on crisis theory within the first week of a stroke event.
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