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  • 2601. Achermann, Sheila
    et al.
    Bölte, Sven
    Falck-Ytter, Terje
    Parents’ Perspectives on Infant Sibling Studies in Autism Spectrum Disorder2017Conference paper (Refereed)
  • 2602.
    Achermann, Sheila
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Psychology.
    Nyström, Pär
    Gredebäck, Gustaf
    Bölte, Sven
    Falck-Ytter, Terje
    Characterizing Motor Functioning in Infants at Risk for Autism Spectrum Disorder Using Motion Capture Technology2018Conference paper (Refereed)
  • 2603.
    Achieng, Spance Joy
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Law, Department of Law.
    SOFTWARE PATENTS: A study on the patentability of software inventions2017Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The primary objective of the thesis will be to focus on patent protection of software under the European Patent Convention, by analyzing the different approaches that the European Patent Office has taken into consideration since the mid-1980s. These approaches are derived from the different decisions that emanate from the Technical Boards of Appeal of the European Patent Office. The thesis will examine the most relevant decisions illustrating the juridical tendencies and basis that have been utilized to decide over the patentability of computer programs. The analysis will conclude with the latest approach taken by the Technical Board of the European Patent Office. The study will examine the patentability requirements of inventions in general established within the European Patent Convention. Sources that will be utilized to carry out this research will include case law, legislation, specialized legal commentary; journals and books. The present study sustains that computer programs may be patented as long as they comply with all the general requirements of an invention prescribed under the European Patent Convention together with the condition established by case law called the technical character requirement. Nevertheless, due to the fact that the Technical Boards of Appeal are not bound by previous case law, the current position could keep evolving as it relies on the stance of  the European Patent Office on patentability of computer programs which is seems to be influenced by the changes in the technological world 

  • 2604.
    Achilleos, Antonakis
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Educational Sciences, Department of Education.
    Ethical web design: An audit of municipality websites in Europe2015Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    All municipalities have a website. This thesis examined the websites of 24 towns in 6 EU member countries in terms of their ethical design. This study found that there are websites that are in the stage of providing contact information only, while other are more detailed with advanced techniques allowing openness and participation. The study found also that there is no code of ethics or EU / country laws that regulate the design or content of a municipality website, as far as their ethical aspect is concerned. What is regulated by the EU and the countries of the municipalities studied in this thesis, is the existence and use of cookies in municipality websites.  The study found that due to lack of control, the websites’ ethical design mainly depends on the local authorities’ interest and initiative. Even for cookies where laws exist, citizens are not informed correctly.

  • 2605.
    Achour, Nemer
    Sveriges lantbruksuniversitet.
    Evaluating energy efficiency and emissions of charred biomass used as a fuel for household cooking in rural Kenya2015Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In sub-Saharan Africa a large share of the energy use utilize biomass as a fuel. In some

    countries more than 90 percent of the energy use is biomass. This energy is primarily used for

    cooking, heating and drying. Cooking food on an open fire or using a traditional stove will

    combust the firewood inefficiently and leads to pollution in the form of particulate matter,

    carbon monoxide and other hazardous pollutants. Indoor pollution has serious health effects

    and especially women and children are affected by this since they spend more time in the

    kitchens compared to men.

    More efficient combustion would lead to less harmful pollution to women and children in

    these rural areas. There are different kinds of stoves on the market and one of them is the

    gasifier stove which allows the biomass to go through pyrolysis in a separate step before

    complete combustion. If the charred biomass is harvested before complete combustion it can

    be saved for later use. This stove will result in cleaner and more energy efficient combustion

    compared to the traditional 3-stone-fire.

    The aim of this study has been to evaluate the charred biomass harvested from this gasifier

    stove in terms of energy use efficiency, emissions and cooking time. The charred biomass was

    compared to conventional charcoal bought at the local market. The charred biomass

    investigated is charred Grevillea prunings from the

    Grevillea Robusta tree, charred coconut

    husks (

    Cocos nucifera) and charred maize cobs (Zea mays). They were tested by cooking a

    meal consisting of two dishes at five different households for different kinds of charred

    biomass and conventional charcoal as a reference.

    Using charred Grevillea prunings gives an energy saving up to 31 percent while charred

    coconut husks gives up to 11 percent energy saved compared to the 3-stone-fire. Charred

    maize cobs was only up to 2 percent more energy efficient than conventional charcoal due to

    its low energy density and fast burning rate. In most cases there was no significant difference

    between the emissions of the different charred fuel types. Only charred maize cobs resulted in

    significantly higher emissions than the other fuels. Household B deviated from the others

    households and had higher emissions. In conclusion the different types of charred biomass are

    good fuels for cooking. Charred maize cobs are less valuable since they require a higher rate

    of refilling of fuel during cooking and do not result in better energy use efficiency compared

    to conventional charcoal.

    There were no significant differences between the different types of charred biomass and

    conventional charcoal in emissions except for a few cases where charred maize cobs had a

    slightly higher level of emission compared to the others. CO

    2- levels were so low that there

    was no risk of harmful concentrations in any way. PM

    2.5-emissions levels were safe, but the

    CO-emissions levels for charred maize cobs were close to levels were symptoms might show.

  • 2606.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    A process-view on the role of resource practices for SME growth2005In: Paper presented at the Interdisciplinary European Conference on Entrepreneurship Research, Amsterdam, February 2005, 2005Conference paper (Other academic)
  • 2607.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Business firm growth: Are we talking about the same thing?2005In: Paper presented at RENT XIX (Research in Entrepreneurship and Small Business), November 17-18, 2005, Naples, Italy, 2005Conference paper (Other academic)
  • 2608.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Investigating Patterns of Development in SMEs2006In: Paper presented at the Academy of Management Annual Meeting, Atlanta, Georgia, August 11-16, 2006, 2006Conference paper (Other academic)
  • 2609.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    One Decade Later: Following Up the ‘Gröna Kvisten’ Prize-winning Growth Firms2006In: Managing Complexity and Change in SMEs: Frontiers in European Research, Cheltenham: Edward Elgar , 2006, p. 10-34Chapter in book (Other (popular science, discussion, etc.))
  • 2610.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    One decade later?: Following up the Gröna kvisten prize-winning high-growth firms2004In: Paper presented at RENT XVIII (Research in Entrepreneurship and Small Business), November 25-26, 2004, Copenhagen, Denmark, 2004Conference paper (Other academic)
  • 2611.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Towards a re-conceptualization of firm growth2004In: Frontiers of entrepreneurship research 2004: proceedings of the twenty-fourth annual Entrepreneurship Research Conference, Babson Park, Mass.: Arthur M. Blank Center for Entrepreneurship, Babson College , 2004Conference paper (Other academic)
  • 2612.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Tracing patterns of growth: A first analysis of the 'Gröna Kvisten' high-growth ventures2005In: Advances in Interdisciplinary European Entrepreneurship research: Vol. 2, Münster: Lit Verlag , 2005, p. 101-132Chapter in book (Other academic)
  • 2613.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Tracing patterns of growth: An analysis of the 'Gröna Kvisten' high-growth ventures2004In: Paper presented at the Interdisciplinary European Conference on Entrepreneurship Research, Regensburg, February 2004, 2004Conference paper (Other academic)
  • 2614.
    Achtenhagen, Leona
    et al.
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Helin, Jenny
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Melin, Leif
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Naldi, Lucia
    Internationella Handelshögskolan, Högskolan i Jönköping, IHH, EMM (Entrepreneurskap, Marknadsföring, Management).
    Tricks of twigs: how the ‘Gröna Kvisten’-winning firms grew big(ger)2005In: Paper presented at the Annual Conference on Corporate Strategy, Vallendar, Germany, March 11-12, 2005, 2005Conference paper (Other academic)
  • 2615. Achterberg, A.
    et al.
    Ackermann, M.
    Adams, J.
    Ahrens, J.
    Andeen, K.
    Atlee, D. W.
    Bahcall, J. N.
    Bai, X.
    Baret, B.
    Barwick, S. W.
    Bay, R.
    Beattie, K.
    Becka, T.
    Becker, J. K.
    Becker, K. -H
    Berghaus, P.
    Berley, D.
    Bernardini, E.
    Bertrand, D.
    Besson, D. Z.
    Blaufuss, E.
    Boersma, D. J.
    Bohm, C.
    Bolmont, J.
    Boeser, S.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Braun, J.
    Burgess, C.
    Burgess, T.
    Castermans, T.
    Chirkin, D.
    Christy, B.
    Clem, J.
    Cowen, D. F.
    D'Agostino, M. V.
    Davour, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Day, C. T.
    De Clercq, C.
    Demiroers, L.
    Descamps, F.
    Desiati, P.
    DeYoung, T.
    Diaz-Velez, J. C.
    Dreyer, J.
    Dumm, J. P.
    Duvoort, M. R.
    Edwards, W. R.
    Ehrlich, R.
    Eisch, J.
    Ellsworth, R. W.
    Evenson, P. A.
    Fadiran, O.
    Fazely, A. R.
    Feser, T.
    Filimonov, K.
    Fox, B. D.
    Gaisser, T. K.
    Gallagher, J.
    Ganugapati, R.
    Geenen, H.
    Gerhardt, L.
    Goldschmidt, A.
    Goodman, J. A.
    Gozzini, R.
    Grullon, S.
    Gross, A.
    Gunasingha, R. M.
    Gurtner, M.
    Hallgren, A.
    Halzen, F.
    Han, K.
    Hanson, K.
    Hardtke, D.
    Hardtke, R.
    Harenberg, T.
    Hart, J. E.
    Hauschildt, T.
    Hays, D.
    Heise, J.
    Helbing, K.
    Hellwig, M.
    Herquet, P.
    Hill, G. C.
    Hodges, J.
    Hoffman, K. D.
    Hommez, B.
    Hoshina, K.
    Hubert, D.
    Hughey, B.
    Hulth, P. O.
    Hultqvist, K.
    Hundertmark, S.
    Huelss, J. -P
    Ishihara, A.
    Jacobsen, J.
    Japaridze, G. S.
    Johansson, H.
    Jones, A.
    Joseph, J. M.
    Kampert, K. -H
    Karle, A.
    Kawai, H.
    Kelley, J. L.
    Kestel, M.
    Kitamura, N.
    Klein, S. R.
    Klepser, S.
    Kohnen, G.
    Kolanoski, H.
    Koepke, L.
    Krasberg, M.
    Kuehn, K.
    Landsman, H.
    Leich, H.
    Leier, D.
    Leuthold, M.
    Liubarsky, I.
    Lundberg, J.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Luenemann, J.
    Madsen, J.
    Mase, K.
    Matis, H. S.
    McCauley, T.
    McParland, C. P.
    Meli, A.
    Messarius, T.
    Meszaros, P.
    Miyamoto, H.
    Mokhtarani, A.
    Montaruli, T.
    Morey, A.
    Morse, R.
    Movit, S. M.
    Muenich, K.
    Nahnhauer, R.
    Nam, J. W.
    Niessen, P.
    Nygren, D. R.
    Oegelman, H.
    Olivas, A.
    Patton, S.
    Pena-Garay, C.
    Perez de los Heros, Carlos
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Piegsa, A.
    Pieloth, D.
    Pohl, A. C.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Porrata, R.
    Pretz, J.
    Price, P. B.
    Przybylski, G. T.
    Rawlins, K.
    Razzaque, S.
    Resconi, E.
    Rhode, W.
    Ribordy, M.
    Rizzo, A.
    Robbins, S.
    Roth, P.
    Rott, C.
    Rutledge, D.
    Ryckbosch, D.
    Sander, H. -G
    Sarkar, S.
    Schlenstedt, S.
    Schmidt, T.
    Schneider, D.
    Seckel, D.
    Seo, S. H.
    Seunarine, S.
    Silvestri, A.
    Smith, A. J.
    Solarz, M.
    Song, C.
    Sopher, J. E.
    Spiczak, G. M.
    Spiering, C.
    Stamatikos, M.
    Stanev, T.
    Steffen, P.
    Stezelberger, T.
    Stokstad, R. G.
    Stoufer, M. C.
    Stoyanov, S.
    Strahler, E. A.
    Straszheim, T.
    Sulanke, K. -H
    Sullivan, G. W.
    Sumner, T. J.
    Taboada, I.
    Tarasova, O.
    Tepe, A.
    Thollander, L.
    Tilav, S.
    Tluczykont, M.
    Toale, P. A.
    Turcan, D.
    van Eijndhoven, N.
    Vandenbroucke, J.
    Van Overloop, A.
    Veigt, B.
    Wagner, W.
    Walck, C.
    Waldmann, H.
    Walter, M.
    Wang, Y. -R
    Wendt, C.
    Wiebusch, C. H.
    Wikstroem, G.
    Williams, D. R.
    Wischnewski, R.
    Wissing, H.
    Woschnagg, K.
    Xu, X. W.
    Yodh, G.
    Yoshida, S.
    Zornoza, J. D.
    IceCube contributions to the XIV International Symposium on Very High Energy Cosmic Ray Interactions (ISVHECRI 2006) Weihai, China - August 15-222008In: Nuclear physics B, Proceedings supplements, ISSN 0920-5632, E-ISSN 1873-3832, Vol. 175, p. 407-408Article in journal (Refereed)
  • 2616. Achterberg, A.
    et al.
    Ackermann, M.
    Adams, J.
    Ahrens, J.
    Andeen, K.
    Auffenberg, J.
    Bahcall, J. N.
    Bai, X.
    Baret, B.
    Barwick, S. W.
    Bay, R.
    Beattie, K.
    Becka, T.
    Becker, J. K.
    Becker, K. -H.
    Berghaus, P.
    Berley, D.
    Bernardini, E.
    Bertrand, D.
    Besson, D. Z.
    Blaufuss, E.
    Boersma, D. J.
    Bohm, C.
    Bolmont, J.
    Boeser, S.
    Botner, O.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Bouchta, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Braun, J.
    Burgess, C.
    Burgess, T.
    Castermans, T.
    Chirkin, D.
    Christy, B.
    Clem, J.
    Cowen, D. F.
    D'Agostino, M. V.
    Davour, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Day, C. T.
    De Clercq, C.
    Demiroeres, L.
    Descamps, F.
    Desiati, P.
    DeYoung, T.
    Diaz-Velez, J. C.
    Dreyer, J.
    Dumm, J. P.
    Duvoort, M. R.
    Edwards, W. R.
    Ehrlich, R.
    Eisch, J.
    Ellsworth, R. W.
    Evenson, P. A.
    Fadiran, O.
    Fazely, A. R.
    Filimonov, K.
    Foerster, M. M.
    Fox, B. D.
    Franckowiak, A.
    Gaisser, T. K.
    Gallagher, J.
    Ganugapati, R.
    Geenen, H.
    Gerhardt, L.
    Goldschmidt, A.
    Goodman, J. A.
    Gozzini, R.
    Griesel, T.
    Gross, A.
    Grullon, S.
    Gunasingha, R. M.
    Gurtner, M.
    Hallgren, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Halzen, F.
    Han, K.
    Hanson, K.
    Hardtke, D.
    Hardtke, R.
    Hart, J. E.
    Hasegawa, Y.
    Hauschildt, T.
    Hays, D.
    Heise, J.
    Helbing, K.
    Hellwig, M.
    Herquet, P.
    Hill, G. C.
    Hodges, J.
    Hoffman, K. D.
    Hommez, B.
    Hoshina, K.
    Hubert, D.
    Hughey, B.
    Hulth, P. O.
    Huess, J. -P.
    Hultqvist, K.
    Hundertmark, S.
    Inaba, M.
    Ishihara, A.
    Jacobsen, J.
    Japaridze, G. S.
    Johansson, H.
    Jones, A.
    Joseph, J. M.
    Kampert, K. -H.
    Kappes, A.
    Karg, T.
    Karle, A.
    Kawai, H.
    Kelley, J. L.
    Kitamura, N.
    Klein, S. R.
    Klepser, S.
    Kohnen, G.
    Kolanoski, H.
    Pke, L. Ko
    Kowalski, M.
    Kowarik, T.
    Krasberg, M.
    Kuehn, K.
    Labare, M.
    Landsman, H.
    Leich, H.
    Leier, D.
    Liubarsky, I.
    Lundberg, J.
    Luenemann, J.
    Madsen, J.
    Mase, K.
    Matis, H. S.
    McCauley, T.
    McParland, C. P.
    Meli, A.
    Messarius, T.
    Meszaros, P.
    Miyamoto, H.
    Mokhtarani, A.
    Montaruli, T.
    Morey, A.
    Morse, R.
    Movit, S. M.
    Muenich, K.
    Nahnhauer, R.
    Nam, J. W.
    Niessen, P.
    Nygren, D. R.
    Oegelman, H.
    Olivas, A.
    Patton, S.
    Pena-Garay, C.
    De Los Heros, C. Perez
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Piegsa, A.
    Pieloth, D.
    Pohl, A. C.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Porrata, R.
    Pretz, J.
    Price, P. B.
    Przybylski, G. T.
    Rawlins, K.
    Razzaque, S.
    Resconi, E.
    Rhode, W.
    Ribordy, M.
    Rizzo, A.
    Robbins, S.
    Roth, P.
    Rott, C.
    Rutledge, D.
    Ryckbosch, D.
    Sander, H. -G.
    Sarkar, S.
    Schlenstedt, S.
    Schmidt, T.
    Schneider, D.
    Seckel, D.
    Semburg, B.
    Seo, S. H.
    Seunarine, S.
    Silvestri, A.
    Smith, A. J.
    Solarz, M.
    Song, C.
    Sopher, J. E.
    Spiczak, G. M.
    Spiering, C.
    Stamatikos, M.
    Stanev, T.
    Steffen, P.
    Stezelberger, T.
    Stokstad, R. G.
    Stoufer, M. C.
    Stoyanov, S.
    Strahler, E. A.
    Straszheim, T.
    Sulanke, K. -H.
    Sullivan, G. W.
    Sumner, T. J.
    Taboada, I.
    Tarasova, O.
    Tepe, A.
    Thollander, L.
    Tilav, S.
    Tluczykont, M.
    Toale, P. A.
    Turcan, D.
    Van Eijndhoven, N.
    Vandenbroucke, J.
    Van Overloop, A.
    Viscomi, V.
    Voigt, B.
    Wagner, W.
    Walck, C.
    Waldmann, H.
    Walter, M.
    Wang, Y. -R.
    Wendt, C.
    Wiebusch, C. H.
    Wikstroem, G.
    Williams, D. R.
    Wischnewski, R.
    Wissing, H.
    Woschnagg, K.
    Xu, X. W.
    Yodh, G.
    Yoshida, S.
    Zornoza, J. D.
    Boer, M.
    Cline, T.
    Crew, G.
    Feroci, M.
    Frontera, F.
    Hurley, K.
    Lamb, D.
    Rau, A.
    Rossi, F.
    Ricker, G.
    Von Kienlin, A.
    The search for muon neutrinos from northern hemisphere gamma-ray bursts with AMANDA2008In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 674, no 1, p. 357-370Article in journal (Refereed)
    Abstract [en]

    We present the results of the analysis of neutrino observations by the Antarctic Muon and Neutrino Detector Array (AMANDA) correlated with photon observations of more than 400 gamma-ray bursts (GRBs) in the northern hemisphere from 1997 to 2003. During this time period, AMANDA's effective collection area for muon neutrinos was larger than that of any other existing detector. After the application of various selection criteria to our data, we expect similar to 1 neutrino event and <2 background events. Based on our observations of zero events during and immediately prior to the GRBs in the data set, we set the most stringent upper limit on muon neutrino emission correlated with GRBs. Assuming a Waxman-Bahcall spectrum and incorporating all systematic uncertainties, our flux upper limit has a normalization at 1 PeV of E-2 Phi(nu) <= 6.3 x 10(-9) GeV cm(-2) s(-1) sr(-1), with 90% of the events expected within the energy range of similar to 10 TeV to similar to 3 PeV. The impact of this limit on several theoretical models of GRBs is discussed, as well as the future potential for detection of GRBs by next-generation neutrino telescopes. Finally, we briefly describe several modifications to this analysis in order to apply it to other types of transient point sources.

  • 2617. Achterberg, A.
    et al.
    Ackermann, M.
    Adams, J.
    Ahrens, J.
    Andeen, K.
    Auffenberg, J.
    Bai, X.
    Baret, B.
    Barwick, S. W.
    Bay, R.
    Beattie, K.
    Becka, T.
    Becker, J. K.
    Becker, K. -H
    Beimforde, M.
    Berghaus, P.
    Berley, D.
    Bernardini, E.
    Bertrand, D.
    Besson, D. Z.
    Blaufuss, E.
    Boersma, D. J.
    Bohm, C.
    Bolmont, J.
    Boeser, S.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, Adam
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Braun, J.
    Burgess, C.
    Burgess, T.
    Castermans, T.
    Chirkin, D.
    Christy, B.
    Clem, J.
    Cowen, D. F.
    D'Agostino, M. V.
    Davour, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Day, C. T.
    De Clercq, C.
    Demiroers, L.
    Descamps, F.
    Desiati, P.
    DeYoung, T.
    Diaz-Velez, J. C.
    Dreyer, J.
    Dumm, J. P.
    Duvoort, M. R.
    Ehrlich, R.
    Eisch, J.
    Ellsworth, R. W.
    Evenson, P. A.
    Fadiran, O.
    Fazely, A. R.
    Filimonov, K.
    Finley, C.
    Foerster, M. M.
    Fox, B. D.
    Franckowiak, A.
    Franke, R.
    Gaisser, T. K.
    Gallagher, J.
    Ganugapati, R.
    Geenen, H.
    Gerhardt, L.
    Goldschmidt, A.
    Goodman, J. A.
    Gozzini, R.
    Griesel, T.
    Grullon, S.
    Grob, A.
    Gunasingha, R. M.
    Gurtner, M.
    Ha, C.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Halzen, F.
    Han, K.
    Hanson, K.
    Hardtke, D.
    Hardtke, R.
    Hart, J. E.
    Hasegawa, Y.
    Hauschildt, T.
    Hays, D.
    Heise, J.
    Helbing, K.
    Hellwig, M.
    Herquet, P.
    Hill, G. C.
    Hodges, J.
    Hoffman, K. D.
    Hommez, B.
    Hoshina, K.
    Hubert, D.
    Hughey, B.
    Huelb, J. -P
    Hulth, P. O.
    Hultqvist, K.
    Hundertmark, S.
    Inaba, M.
    Ishihara, A.
    Jacobsen, J.
    Japaridze, G. S.
    Johansson, H.
    Jones, A.
    Joseph, J. M.
    Kampert, K. -H
    Kappes, A.
    Karg, T.
    Karle, A.
    Kawai, H.
    Kelley, J. L.
    Kislat, F.
    Kitamura, N.
    Klein, S. R.
    Klepser, S.
    Kohnen, G.
    Kolanoski, H.
    Koepke, L.
    Kowalski, M.
    Kowarik, T.
    Krasberg, M.
    Kuehn, K.
    Labare, M.
    Landsman, H.
    Lauer, R.
    Leich, H.
    Leier, D.
    Liubarsky, I.
    Lundberg, J.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Luenemann, J.
    Madsen, J.
    Maruyama, R.
    Mase, K.
    Matis, H. S.
    McCauley, T.
    McParland, C. P.
    Meagher, K.
    Meli, A.
    Messarius, T.
    Meszaros, P.
    Miyamoto, H.
    Mokhtarani, A.
    Montaruli, T.
    Morey, A.
    Morse, R.
    Movit, S. M.
    Muenich, K.
    Nahnhauer, R.
    Nam, J. W.
    Nieben, P.
    Nygren, D. R.
    Olivas, A.
    Patton, S.
    Pena-Garay, C.
    Heros, Carlos Pérez de Los
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Piegsa, A.
    Pieloth, D.
    Pohl, Annika C.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Porrata, R.
    Pretz, J.
    Price, P. B.
    Przybylski, G. T.
    Rawlins, K.
    Razzaque, S.
    Redl, P.
    Resconi, E.
    Rhode, W.
    Ribordy, M.
    Rizzo, A.
    Robbins, S.
    Roth, P.
    Rothmaier, F.
    Rott, C.
    Rutledge, D.
    Ryckbosch, D.
    Sander, H. -G
    Sarkar, S.
    Satalecka, K.
    Schlenstedt, S.
    Schmidt, T.
    Schneider, D.
    Seckel, D.
    Semburg, B.
    Seo, S. H.
    Sestayo, Y.
    Seunarine, S.
    Silvestri, A.
    Smith, A. J.
    Song, C.
    Sopher, J. E.
    Spiczak, G. M.
    Spiering, C.
    Stamatikos, M.
    Stanev, T.
    Stezelberger, T.
    Stokstad, R. G.
    Stoufer, M. C.
    Stoyanov, S.
    Strahler, E. A.
    Straszheim, T.
    Sulanke, K. -H
    Sullivan, G. W.
    Sumner, T. J.
    Taboada, I.
    Tarasova, O.
    Tepe, A.
    Thollander, L.
    Tilav, S.
    Tluczykont, M.
    Toale, P. A.
    Tosi, D.
    Turcan, D.
    van Eijndhoven, N.
    Vandenbroucke, J.
    Van Overloop, A.
    de Vries-Uiterweerd, G.
    Viscomi, V.
    Voigt, B.
    Wagner, W.
    Walck, C.
    Waldmann, H.
    Walter, M.
    Wang, Y. -R
    Wendt, C.
    Wiebusch, C. H.
    Wikstroem, G.
    Williams, D. R.
    Wischnewski, R.
    Wissing, H.
    Woschnagg, K.
    Xu, X. W.
    Yodh, G.
    Yoshida, S.
    Zornoza, J. D.
    Detection of atmospheric muon neutrinos with the IceCube 9-string detector2007In: Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, Vol. 76, no 2, p. 027101-Article in journal (Refereed)
    Abstract [en]

    The IceCube neutrino detector is a cubic kilometer TeV to PeV neutrino detector under construction at the geographic South Pole. The dominant population of neutrinos detected in IceCube is due to meson decay in cosmic-ray air showers. These atmospheric neutrinos are relatively well understood and serve as a calibration and verification tool for the new detector. In 2006, the detector was approximately 10% completed, and we report on data acquired from the detector in this configuration. We observe an atmospheric neutrino signal consistent with expectations, demonstrating that the IceCube detector is capable of identifying neutrino events. In the first 137.4 days of live time, 234 neutrino candidates were selected with an expectation of 211 +/- 76.1(syst)+/- 14.5(stat) events from atmospheric neutrinos.

  • 2618. Achterberg, A.
    et al.
    Ackermann, M.
    Adams, J.
    Ahrens, J.
    Andeen, K.
    Auffenberg, J.
    Bai, X.
    Baret, B.
    Barwick, S. W.
    Bay, R.
    Beattie, K.
    Becka, T.
    Becker, J. K.
    Becker, K. -H
    Berghaus, P.
    Berley, D.
    Bernardini, E.
    Bertrand, D.
    Besson, D. Z.
    Blaufuss, E.
    Boersma, D. J.
    Bohm, C.
    Bolmont, J.
    Boeser, S.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, Adam
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Braun, J.
    Burgess, T.
    Castermans, T.
    Chirkin, D.
    Christy, B.
    Clem, J.
    Cowen, D. F.
    D'Agostino, M. V.
    Davour, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Day, C. T.
    De Clercq, C.
    Demirors, L.
    Descamps, F.
    Desiati, P.
    DeYoung, T.
    Diaz-Velez, J. C.
    Dreyer, J.
    Dumm, J. P.
    Duvoort, M. R.
    Edwards, W. R.
    Ehrlich, R.
    Eisch, J.
    Ellsworth, R. W.
    Evenson, P. A.
    Fadiran, O.
    Fazely, A. R.
    Filimonov, K.
    Finley, C.
    Foerster, M. M.
    Fox, B. D.
    Franckowiak, A.
    Franke, R.
    Gaisser, T. K.
    Gallagher, J.
    Ganugapati, R.
    Geenen, H.
    Gerhardt, L.
    Goldschmidt, A.
    Goodman, J. A.
    Gozzini, R.
    Griesel, T.
    Gross, A.
    Grullon, S.
    Gunasingha, R. M.
    Gurtner, M.
    Ha, C.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Halzen, F.
    Han, K.
    Hanson, K.
    Hardtke, D.
    Hardtke, R.
    Hart, J. E.
    Hasegawa, Y.
    Hauschildt, T.
    Hays, D.
    Heise, J.
    Helbing, K.
    Hellwig, M.
    Herquet, P.
    Hill, G. C.
    Hodges, J.
    Hoffman, K. D.
    Hommez, B.
    Hoshina, K.
    Hubert, D.
    Hughey, B.
    Hulss, J. -P
    Hulth, P. O.
    Hultqvist, K.
    Hundertmark, S.
    Inaba, M.
    Ishihara, A.
    Jacobsen, J.
    Japaridze, G. S.
    Johansson, H.
    Jones, A.
    Joseph, J. M.
    Kampert, K. -H
    Kappes, A.
    Karg, T.
    Karle, A.
    Kawai, H.
    Kelley, J. L.
    Kislat, F.
    Kitamura, N.
    Klein, S. R.
    Klepser, S.
    Kohnen, G.
    Kolanoski, H.
    Koepke, L.
    Kowalski, M.
    Kowarik, T.
    Krasberg, M.
    Kuehn, K.
    Labare, M.
    Landsman, H.
    Lauer, R.
    Leich, H.
    Leier, D.
    Liubarsky, I.
    Lundberg, J.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Luenemann, J.
    Madsen, J.
    Maruyama, R.
    Mase, K.
    Matis, H. S.
    McCauley, T.
    McParland, C. P.
    Meli, A.
    Messarius, T.
    Meszaros, P.
    Miyamoto, H.
    Mokhtarani, A.
    Montaruli, T.
    Morey, A.
    Morse, R.
    Movit, S. M.
    Muenich, K.
    Nahnhauer, R.
    Nam, J. W.
    Niessen, P.
    Nygren, D. R.
    Oegelman, H.
    Olivas, A.
    Patton, S.
    Pena-Garay, C.
    de los Heros, Carlos Pérez
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Piegsa, A.
    Pieloth, D.
    Pohl, Annika C.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Porrata, R.
    Pretz, J.
    Price, P. B.
    Przybylski, G. T.
    Rawlins, K.
    Razzaque, S.
    Resconi, E.
    Rhode, W.
    Ribordy, M.
    Rizzo, A.
    Robbins, S.
    Roth, P.
    Rothmaier, F.
    Rott, C.
    Rutledge, D.
    Ryckbosch, D.
    Sander, H. -G
    Sarkar, S.
    Satalecka, K.
    Schlenstedt, S.
    Schmidt, T.
    Schneider, D.
    Seckel, D.
    Semburg, B.
    Seo, S. H.
    Sestayo, Y.
    Seunarine, S.
    Silvestri, A.
    Smith, A. J.
    Solarz, M.
    Song, C.
    Sopher, J. E.
    Spiczak, G. M.
    Spiering, C.
    Stamatikos, M.
    Stanev, T.
    Stezelberger, T.
    Stokstad, R. G.
    Stoufer, M. C.
    Stoyanov, S.
    Strahler, E. A.
    Straszheim, T.
    Sulanke, K. -H
    Sullivan, G. W.
    Sumner, T. J.
    Taboada, I.
    Tarasova, O.
    Tepe, A.
    Thollander, L.
    Tilav, S.
    Tluczykont, M.
    Toale, P. A.
    Tosi, D.
    Turcan, D.
    van Eijndhoven, N.
    Vandenbroucke, J.
    Van Overloop, A.
    Viscomi, V.
    Voigt, B.
    Wagner, W.
    Walck, C.
    Waldmann, H.
    Walter, M.
    Wang, Y. -R
    Wendt, C.
    Wiebusch, H.
    Wiedemann, C.
    Wikstrom, G.
    Williams, D. R.
    Wischnewski, R.
    Wissing, H.
    Woschnagg, K.
    Xu, X. W.
    Yodh, G.
    Yoshida, S.
    Zornoza, J. D.
    Multiyear search for a diffuse flux of muon neutrinos with AMANDA-II2007In: Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, Vol. 76, no 4, p. 042008-Article in journal (Refereed)
    Abstract [en]

    A search for TeV-PeV muon neutrinos from unresolved sources was performed on AMANDA-II data collected between 2000 and 2003 with an equivalent live time of 807 days. This diffuse analysis sought to find an extraterrestrial neutrino flux from sources with nonthermal components. The signal is expected to have a harder spectrum than the atmospheric muon and neutrino backgrounds. Since no excess of events was seen in the data over the expected background, an upper limit of E-2 Phi(90%C.L.)< 7.4x10(-8) GeV cm(-2) s(-1) sr(-1) is placed on the diffuse flux of muon neutrinos with a Phi proportional to E-2 spectrum in the energy range 16 TeV to 2.5 PeV. This is currently the most sensitive Phi proportional to E-2 diffuse astrophysical neutrino limit. We also set upper limits for astrophysical and prompt neutrino models, all of which have spectra different from Phi proportional to E-2.

  • 2619. Achterberg, A.
    et al.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, Adam
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Conrad, Jan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Davour, Anna
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Lundberg, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Marciniewski, Pawel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Pérez de los Heros, Carlos
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Biermann, P.L.
    On the selection of AGN neutrino source candidates for a source stacking analysis with neutrino telescopes2006In: Astroparticle physics, ISSN 0927-6505, E-ISSN 1873-2852, Vol. 26, no 4-5, p. 282-300Article in journal (Refereed)
    Abstract [en]

    The sensitivity of a search for sources of TeV neutrinos can be improved by grouping potential sources together into generic classes in a procedure that is known as source stacking. In this paper, we define catalogs of Active Galactic Nuclei (AGN) and use them to perform a source stacking analysis. The grouping of AGN into classes is done in two steps: first, AGN classes are defined, then, sources to be stacked are selected assuming that a potential neutrino flux is linearly correlated with the photon luminosity in a certain energy band (radio, IR, optical, keV, GeV, TeV). Lacking any secure detailed knowledge on neutrino production in AGN, this correlation is motivated by hadronic AGN models, as briefly reviewed in this paper.The source stacking search for neutrinos from generic AGN classes is illustrated using the data collected by the AMANDA-II highenergy neutrino detector during the year 2000. No significant excess for any of the suggested groups was found.

  • 2620. Achterberg, A.
    et al.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, Adam
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Conrad, Jan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Davour, Anna
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Lundberg, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Marciniewski, Pawel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Pérez de los Heros, Carlos
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Zornoza, J. D.
    Limits on the Muon Flux from Neutralino Annihilations at the Center of the Earth with AMANDA2006In: Astroparticle physics, ISSN 0927-6505, E-ISSN 1873-2852, Vol. 26, no 2, p. 129-139Article in journal (Refereed)
    Abstract [en]

    A search has been performed for nearly vertically upgoing neutrino-induced muons with the Antarctic Muon And Neutrino Detector Array (AMANDA), using data taken over the three year period 1997-99. No excess above the expected atmospheric neutrino background has been found. Upper limits at 90% confidence level have been set on the annihilation rate of neutralinos at the center of the Earth, as well as on the muon flux at AMANDA induced by neutrinos created by the annihilation products.

  • 2621. Achterberg, A.
    et al.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, Adam
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Conrad, Jan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Davour, Anna
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Lundberg, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Marciniewski, Pawel
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Pérez de los Heros, Carlos.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Zornoza, J.D.
    First Year Performance of the IceCube Neutrino Telescope2006In: Astroparticle physics, ISSN 0927-6505, E-ISSN 1873-2852, Vol. 26, no 3, p. 155-173Article in journal (Refereed)
    Abstract [en]

    The first sensors of the IceCube neutrino observatory were deployed at the South Pole during the austral summer of 2004-2005 and have been producing data since February 2005. One string of 60 sensors buried in the ice and a surface array of eight ice Cherenkov tanks took data until December 2005 when deployment of the next set of strings and tanks began. We have analyzed these data, demonstrating that the performance of the system meets or exceeds design requirements. Times are determined across the whole array to a relative precision of better than 3 ns, allowing reconstruction of muon tracks and light bursts in the ice, of air-showers in the surface array and of events seen in coincidence by surface and deep-ice detectors separated by up to 2.5 km.

  • 2622.
    Achterberg, A.
    et al.
    Department of Physics and Astronomy, Utrecht University.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, Adam
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Davour, Anna
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Lundberg, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Perez de los Heros, Carlos
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Pohl, Annika C.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Zornoza, J. D.
    Search for neutrino-induced cascades from gamma-ray bursts with AMANDA2007In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 664, no 1, p. 397-410Article in journal (Refereed)
    Abstract [en]

    Using the neutrino telescope AMANDA-II, we have conducted two analyses searching for neutrino-induced cascades from gamma-ray bursts. No evidence of astrophysical neutrinos was found, and limits are presented for several models. We also present neutrino effective areas which allow the calculation of limits for any neutrino production model. The first analysis looked for a statistical excess of events within a sliding window of 1 or 100 s (for short and long burst classes, respectively) during the years 2001-2003. The resulting upper limit on the diffuse flux normalization times E2 for the Waxman-Bahcall model at 1 PeV is 1.6×10-6 GeV cm-2 s-1 sr-1 (a factor of 120 above the theoretical prediction). For this search 90% of the neutrinos would fall in the energy range 50 TeV to 7 PeV. The second analysis looked for neutrino-induced cascades in coincidence with 73 bursts detected by BATSE in the year 2000. The resulting upper limit on the diffuse flux normalization times E2, also at 1 PeV, is 1.5×10-6 GeV cm-2 s-1 sr-1 (a factor of 110 above the theoretical prediction) for the same energy range. The neutrino-induced cascade channel is complementary to the up-going muon channel. We comment on its advantages for searches of neutrinos from GRBs and its future use with IceCube.

  • 2623. Achterberg, A.
    et al.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, Adam
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Davour, Anna
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Lundberg, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Pérez de los Heros, Carlos
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Pohl, Annika C.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Zornoza, J. D.
    Five years of searches for point sources of astrophysical neutrinos with the AMANDA-II neutrino telescope2007In: Physical Review D. Particles, fields, gravitation, and cosmology, ISSN 1550-7998, Vol. 75, no 10, p. 102001-Article in journal (Refereed)
    Abstract [en]

    We report the results of a five-year survey of the northern sky to search for point sources of high energy neutrinos. The search was performed on the data collected with the AMANDA-II neutrino telescope in the years 2000 to 2004, with a live time of 1001 days. The sample of selected events consists of 4282 upward going muon tracks with high reconstruction quality and an energy larger than about 100 GeV. We found no indication of point sources of neutrinos and set 90% confidence level flux upper limits for an all-sky search and also for a catalog of 32 selected sources. For the all-sky search, our average (over declination and right ascension) experimentally observed upper limit Phi0=((E/(1 TeV)))gamma·((d Phi)/dE) to a point source flux of muon and tau neutrino (detected as muons arising from taus) is Phinu[sub mu] + [overline nu ][sub mu]0+Phinu[sub tau] + [overline nu ][sub tau]0=11.1×  10-11 TeV-1 cm-2 s-1, in the energy range between 1.6 TeV and 2.5 PeV for a flavor ratio Phinu[sub mu] + [overline nu ][sub mu]0/Phinu[sub tau] + [overline nu ][sub tau]0=1 and assuming a spectral index gamma=2. It should be noticed that this is the first time we set upper limits to the flux of muon and tau neutrinos. In previous papers we provided muon neutrino upper limits only neglecting the sensitivity to a signal from tau neutrinos, which improves the limits by 10% to 16%. The value of the average upper limit presented in this work corresponds to twice the limit on the muon neutrino flux Phinu[sub mu] + [overline nu ][sub mu]0=5.5×10-11 TeV-1 cm-2 s-1. A stacking analysis for preselected active galactic nuclei and a search based on the angular separation of the events were also performed. We report the most stringent flux upper limits to date, including the results of a detailed assessment of systematic uncertainties.

  • 2624. Achterberg, A.
    et al.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Bouchta, Adam
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Davour, Anna
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Lundberg, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Pérez de los Heros, Carlos
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics, High Energy Physics.
    Zornoza, J.D.
    Limits on the high-energy gamma and neutrino fluxes from the SGR 1806-20 giant flare of 27 December 2004 with the AMANDA-II detector2006In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 97, no 22, p. 221101-Article in journal (Refereed)
    Abstract [en]

    On 27 December 2004, a giant gamma flare from the Soft Gamma-Ray Repeater 1806-20 saturated many satellite gamma-ray detectors, being the brightest transient event ever observed in the Galaxy. AMANDA-II was used to search for down-going muons indicative of high-energy gammas and/or neutrinos from this object. The data revealed no significant signal, so upper limits (at 90% C.L.) on the normalization constant were set: 0.05(0.5) TeV-1 m(-2) s(-1) for gamma=-1.47 (-2) in the gamma flux and 0.4(6.1) TeV-1 m(-2) s(-1) for gamma=-1.47 (-2) in the high-energy neutrino flux.

  • 2625. Achtzehn, Andreas
    et al.
    Benenson, Zinaida
    Rohner, Christian
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology. Datorteknik. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems.
    Implementing Agreement Protocols in Sensor2006In: The Second International Workshop on Wireless and Sensor Networks Security (WSNS'06), 2006Conference paper (Refereed)
    Abstract [en]

    We investigate application of agreement protocols tolerating malicious failures in sensor networks. We identify several scenarios where agreement can be used, and report on our experience with implementing an agreement protocol.

  • 2626.
    Achtzehn, Andreas
    et al.
    RWTH Aachen.
    Rohner, Christian
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems.
    Rodhe, Ioana
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems.
    ARPD: Asynchronous random key predistribution in the LEAP framework for Wireless Sensor Networks2007In: 3rd IEEE International Workshop on Wireless and Sensor Networks Security (IEEE WSNS 2007), 2007Conference paper (Refereed)
    Abstract [en]

    In the LEAP framework for wireless sensor networks a set of keys is used to secure communication. LEAP distinguishes between unicast (pairwise) communication, group (cluster) communication and global (broadcast) communication. The keys used in pairwise communication are derived from an initial key KI that nodes are equipped with prior to deployment

    and that is deleted after link setup. Further keys are distributed encrypted with these pairwise keys. If the initial key is ever disclosed, the whole network is compromised.

    To lower the threat of KI disclosure, we present a novel KI -less scheme for key predistribution. Our scheme is based on random key redistribution, and proves to perform better in medium sized networks than previous proposals. It is resilient against node capture attacks and allows node to node authentication. Attacks against overlying protocols in the network are more difficult with this scheme.

    We have conducted computations to show the feasibility of our scheme for networks up to a size of 1000 nodes. By introducing a key reuse system we are able to increase the probability of a successful link setup. We have included a security analysis that discusses our scheme’s resistance against commonly known attacks.

  • 2627.
    Acikkol, Naz
    Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
    Testing the Cretaceous Diversity of Ichthyosaurs and Their Extinction Hypotheses Using a Quantitative Approach2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    As portrayed in Before the Dinosaur: the Historical Significance of the Fossil Marine Reptiles, ichthyosaurs, as other Mesozoic marine amniotes, have been unfairly overshadowed by dinosaurs in both popular culture and the field of vertebrate palaeontology. Yet by the effort of dedicated researchers, work on these fish-like marine reptiles had never died out, and in fact a second wave of interest emerged in the late 20th century. Since then, research on ichthyosaurs has focused on discovery of new taxa, assessments of their palaeobiology, and quantitative analyses of their diversity. Despite ever-growing interests, patterns and mechanisms leading up to their extinction in the Cenomanian were insufficiently evaluated. In other words, hypotheses focusing on abrupt extinction linked to a crash in prey diversity, notably belemnites, over a catastrophic event at the end-Cenomanian remain poorly tested. The current project thus aims to test: 1) whether the Cretaceous diversity of ichthyosaurs reflects biological signals, and 2) correlation of their diversity with the diversity of Mesozoic cephalopods, such as belemnites and ammonites. In this regard, a species-level dataset of Cretaceous belemnites including belemnite-bearing formations was built to be employed together with the occurrence-based ichthyosaur and ammonite datasets in the same taxic level. Raw taxic counts, as observed diversities of the clades, were quantified in two different temporal scales, and compared with two sampling proxies. The model-based method was then applied to correct all taxic counts based on the two proxies in both time bins to acquire expected diversities of all the clades. Comparisons resulted in strong correlations between the clades’ observed diversities and proxies exposing biased patterns under the influence of sampling intensity. Whereas both observed and expected diversities show no evidence of a causal relationship between the predator and prey groups, suggesting that the latter’s diversity seems not being a parameter for the former’s, and thus being unsupportive for a prey-driven demise of the predator. Furthermore, the expected trend of ichthyosaurs indicates lower Albian diversity gradually declining towards their extinction in the Cenomanian, which appears to be contrasting with recent studies.

  • 2628. Ackeby, Susanne
    et al.
    Bollen, Math
    Munkhammar, Joakim
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
    Prosumer with demand-response: Distribution network impact and mitigation2013Report (Refereed)
  • 2629.
    Ackeby, Susanne
    et al.
    STRI.
    Bollen, Math
    Luleå tekniska universitet.
    Munkhammar, Joakim
    Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
    Prosumer with demand-response:Distribution network impact and mitigation2013Report (Other academic)
    Abstract [en]

    This report is the result from a project funded by ELFORSK done by STRI. Theproject is studying the effects the introduction of so called “prosumers”(customers with own production) and electrical vehicles will have on differenttypes of networks. Four different cases are studied: covering urban and ruralareas with different types of customers.In the urban areas the power through the transformer will be the limitingfactor. The major impact in the cases studied is from the introduction ofproduction from photovoltaics at the customer-side of the meter. This willresult in an introduction of surplus due to production which in one case led toan increase of the absolute power through the transformer with more than30%, which resulted in transformer overloading.In the rural areas the voltage drop or rise will be the limiting factor. The casesstudied had already high voltage drops even in the base cases. In the casestudies it was seen that the voltage drop could be slightly reduced whenintroducing more local production, but the production also led to that voltagerise could appear. As a result the interval of the voltage variations wasincreased, which in turn leads to difficulties with designing the network suchthat neither overvoltage nor undervoltage occurs.Introducing control algorithms had a very positive effect on reducing the netproduction from the photovoltaics. Using both hard and soft curtailment madeit possible to remove all overcurrents or overvoltages. Using hard curtailment,where all production is turned off during overcurrent or overvoltage, leadshowever to a large reduction in energy from renewable energy sources.Therefore soft curtailment should as much as possible be used.The control algorithms studied for reducing the net consumption had a morelimited effect and even resulted in an increase of the maximum netconsumption. When trying to reduce the net consumption during an overload,the reason of the overload could only be moved in time and not removed as inthe case of reducing the net production. And since often the period duringwhich the power exceeds the limit is longer than the number of hours possibleto move the energy, sometimes moving the energy had an adverse effect.The model used for controlling the net consumption needs furtherdevelopment, but it is still possible to draw the conclusion that this type ofcontrol offers only limited possibilities for mitigating overload or undervoltage.The effects of introducing prosumers and more electrical vehicles as defined inthe selected cases did not show any alarming results in this study. However,studies to learn more about the possible consequences of changes atcustomer-side are important to be able to handle the impact of such changeson the network.Further future studies needed: database with load and production data;improved control algorithms; demonstration project; experience from othercountries and studies on reactive power compensation.

  • 2630. Ackermann, M.
    et al.
    Adams, J.
    Ahrens, J.
    Andeen, K.
    Auffenberg, J.
    Bai, X.
    Baret, B.
    Barwick, S. W.
    Bay, R.
    Beattie, K.
    Becka, T.
    Becker, J. K.
    Becker, K. -H
    Beimforde, M.
    Berghaus, P.
    Berley, D.
    Bernardini, E.
    Bertrand, D.
    Besson, D. Z.
    Blaufuss, E.
    Boersma, D. J.
    Bohm, C.
    Bolmont, J.
    Boeser, S.
    Botner, Olga
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Bouchta, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Braun, J.
    Burgess, T.
    Castermans, T.
    Chirkin, D.
    Christy, B.
    Clem, J.
    Cowen, D. F.
    D'Agostino, M. V.
    Davour, A.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Day, C. T.
    De Clercq, C.
    Demiroers, L.
    Descamps, F.
    Desiati, P.
    De Vries-Uiterweerd, G.
    DeYoung, T.
    Diaz-Velez, J. C.
    Dreyer, J.
    Dumm, J. P.
    Duvoort, M. R.
    Edwards, W. R.
    Ehrlich, R.
    Eisch, J.
    Ellsworth, R. W.
    Evenson, P. A.
    Fadiran, O.
    Fazely, A. R.
    Filimonov, K.
    Finley, C.
    Foerster, M. M.
    Fox, B. D.
    Franckowiak, A.
    Franke, R.
    Gaisser, T. K.
    Gallagher, J.
    Ganugapati, R.
    Geenen, H.
    Gerhardt, L.
    Goldschmidt, A.
    Goodman, J. A.
    Gozzini, R.
    Griesel, T.
    Gross, A.
    Grullon, S.
    Gunasingha, R. M.
    Gurtner, M.
    Ha, C.
    Hallgren, Allan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Halzen, F.
    Han, K.
    Hanson, K.
    Hardtke, D.
    Hardtke, R.
    Hasegawa, Y.
    Hauschildt, T.
    Heise, J.
    Helbing, K.
    Hellwig, M.
    Herquet, P.
    Hill, G. C.
    Hodges, J.
    Hoffman, K. D.
    Hommez, B.
    Hoshina, K.
    Hubert, D.
    Hughey, B.
    Huelss, J. -P
    Hulth, P. O.
    Hultqvist, K.
    Hundertmark, S.
    Inaba, M.
    Ishihara, A.
    Jacobsen, J.
    Japaridze, G. S.
    Johansson, H.
    Joseph, J. M.
    Kampert, K. -H
    Kappes, A.
    Karg, T.
    Karle, A.
    Kawai, H.
    Kelley, J. L.
    Kiryluk, J.
    Kislat, F.
    Kitamura, N.
    Klein, S. R.
    Klepser, S.
    Kohnen, G.
    Kolanoski, H.
    Koepke, L.
    Kowalski, M.
    Kowarik, T.
    Krasberg, M.
    Kuehn, K.
    Kuwabara, T.
    Labare, M.
    Laihem, K.
    Landsman, H.
    Lauer, R.
    Leich, H.
    Leier, D.
    Liubarsky, I.
    Lundberg, Johan
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Luenemann, J.
    Madsen, J.
    Maruyama, R.
    Mase, K.
    Matis, H. S.
    McCauley, T.
    McParland, C. P.
    Meagher, K.
    Meli, A.
    Messarius, T.
    Meszaros, P.
    Miyamoto, H.
    Montaruli, T.
    Morey, A.
    Morse, R.
    Movit, S. M.
    Muenich, K.
    Nahnhauer, R.
    Nam, J. W.
    Niessen, P.
    Nygren, D. R.
    Olivas, A.
    Ono, M.
    Patton, S.
    Perez de los Heros, Carlos
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Piegsa, A.
    Pieloth, D.
    Pohl, A. C.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
    Porrata, R.
    Pretz, J.
    Price, P. B.
    Przybylski, G. T.
    Rawlins, K.
    Razzaque, S.
    Redl, P.
    Resconi, E.
    Rhode, W.
    Ribordy, M.
    Rizzo, A.
    Robbins, S.
    Robbins, W. J.
    Roth, P.
    Rothmaier, F.
    Rott, C.
    Roucelle, C.
    Rutledge, D.
    Ryckbosch, D.
    Sander, H. -G
    Sarkar, S.
    Satalecka, K.
    Schlenstedt, S.
    Schmidt, T.
    Schneider, D.
    Schultz, O.
    Seckel, D.
    Semburg, B.
    Seo, S. H.
    Sestayo, Y.
    Seunarine, S.
    Silvestri, A.
    Smith, A. J.
    Song, C.
    Spiczak, G. M.
    Spiering, C.
    Stamatikos, M.
    Stanev, T.
    Stezelberger, T.
    Stokstad, R. G.
    Stoufer, M. C.
    Stoyanov, S.
    Strahler, E. A.
    Straszheim, T.
    Sulanke, K. -H
    Sullivan, G. W.
    Sumner, T. J.
    Swillens, Q.
    Taboada, I.
    Tarasova, O.
    Tepe, A.
    Thollander, L.
    Tilav, S.
    Tluczykont, M.
    Toale, P. A.
    Tosi, D.
    Turcan, D.
    Van Eijndhoven, N.
    Vandenbroucke, J.
    Van Overloop, A.
    Viscomi, V.
    Vogt, C.
    Voigt, B.
    Wagner, W.
    Walck, C.
    Waldmann, H.
    Waldenmaier, T.
    Walter, M.
    Wang, Y. -R
    Wendt, C.
    Wiebusch, C. H.
    Wiedemann, C.
    Wikstroem, G.
    Williams, D. R.
    Wischnewski, R.
    Wissing, H.
    Woschnagg, K.
    Xu, X. W.
    Yodh, G.
    Yoshida, S.
    Zornoza, J. D.
    Search for ultra-high-energy neutrinos with amanda-II2008In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 675, no 2, p. 1014-1024Article in journal (Refereed)
    Abstract [en]

    A search for diffuse neutrinos with energies in excess of 10(5) GeV is conducted with AMANDA-II data recorded between 2000 and 2002. Above 10(7) GeV, the Earth is essentially opaque to neutrinos. This fact, combined with the limited overburden of the AMANDA-II detector ( roughly 1.5 km), concentrates these ultra-high-energy neutrinos at the horizon. The primary background for this analysis is bundles of downgoing, high-energy muons from the interaction of cosmic rays in the atmosphere. No statistically significant excess above the expected background is seen in the data, and an upper limit is set on the diffuse all-flavor neutrino flux of E-2 Phi(90%CL) < 2.7x10(-7) GeV cm(-2) s(-1) sr(-1) valid over the energy range of 2x10(5) to 10(9) GeV. A number of models that predict neutrino fluxes from active galactic nuclei are excluded at the 90% confidence level.

  • 2631. Ackermann, M.
    et al.
    Ajello, M.
    Albert, A.
    Atwood, W. B.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Bechtol, K.
    Bellazzini, R.
    Berenji, B.
    Blandford, R. D.
    Bloom, E. D.
    Bonamente, E.
    Borgland, A. W.
    Bregeon, J.
    Brigida, M.
    Bruel, P.
    Buehler, R.
    Burnett, T. H.
    Buson, S.
    Caliandro, G. A.
    Cameron, R. A.
    Canadas, B.
    Caraveo, P. A.
    Casandjian, J. M.
    Cecchi, C.
    Charles, E.
    Chekhtman, A.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Conrad, Jan
    Stockholms universitet, Fysikum.
    Cutini, S.
    de Angelis, A.
    de Palma, F.
    Dermer, C. D.
    Digel, S. W.
    do Couto e Silva, E.
    Drell, P. S.
    Drlica-Wagner, A.
    Falletti, L.
    Favuzzi, C.
    Fegan, S. J.
    Ferrara, E. C.
    Fukazawa, Y.
    Funk, S.
    Fusco, P.
    Gargano, F.
    Gasparrini, D.
    Gehrels, N.
    Germani, S.
    Giglietto, N.
    Giordano, F.
    Giroletti, M.
    Glanzman, T.
    Godfrey, G.
    Grenier, I. A.
    Guiriec, S.
    Gustafsson, M.
    Hadasch, D.
    Hayashida, M.
    Hays, E.
    Hughes, R. E.
    Jeltema, T. E.
    Johannesson, G.
    Johnson, R. P.
    Johnson, A. S.
    Kamae, T.
    Katagiri, H.
    Kataoka, J.
    Knoedlseder, J.
    Kuss, M.
    Lande, J.
    Latronico, L.
    Lionetto, A. M.
    Garde, Maja Llena
    Stockholms universitet, Fysikum.
    Longo, F.
    Loparco, F.
    Lott, B.
    Lovellette, M. N.
    Lubrano, P.
    Madejski, G. M.
    Mazziotta, M. N.
    McEnery, J. E.
    Mehault, J.
    Michelson, P. F.
    Mitthumsiri, W.
    Mizuno, T.
    Monte, C.
    Monzani, M. E.
    Morselli, A.
    Moskalenko, I. V.
    Murgia, S.
    Naumann-Godo, M.
    Norris, J. P.
    Nuss, E.
    Ohsugi, T.
    Okumura, A.
    Omodei, N.
    Orlando, E.
    Ormes, J. F.
    Ozaki, M.
    Paneque, D.
    Parent, D.
    Pesce-Rollins, M.
    Pierbattista, M.
    Piron, F.
    Pivato, G.
    Porter, T. A.
    Profumo, S.
    Raino, S.
    Razzano, M.
    Reimer, A.
    Reimer, O.
    Ritz, S.
    Roth, M.
    Sadrozinski, H. F. -W
    Sbarra, C.
    Scargle, J. D.
    Schalk, T. L.
    Sgro, C.
    Siskind, E. J.
    Spandre, G.
    Spinelli, P.
    Strigari, L.
    Suson, D. J.
    Tajima, H.
    Takahashi, H.
    Tanaka, T.
    Thayer, J. G.
    Thayer, J. B.
    Thompson, D. J.
    Tibaldo, L.
    Tinivella, M.
    Torres, D. F.
    Troja, E.
    Uchiyama, Y.
    Vandenbroucke, J.
    Vasileiou, V.
    Vianello, G.
    Vitale, V.
    Waite, A. P.
    Wang, P.
    Winer, B. L.
    Wood, K. S.
    Wood, M.
    Yang, Zhaoyu
    Stockholms universitet, Fysikum.
    Zimmer, Stephan
    Stockholms universitet, Fysikum.
    Kaplinghat, M.
    Martinez, G. D.
    Constraining Dark Matter Models from a Combined Analysis of Milky Way Satellites with the Fermi Large Area Telescope2011In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 107, no 24Article in journal (Refereed)
    Abstract [en]

    Satellite galaxies of the Milky Way are among the most promising targets for dark matter searches in gamma rays. We present a search for dark matter consisting of weakly interacting massive particles, applying a joint likelihood analysis to 10 satellite galaxies with 24 months of data of the Fermi Large Area Telescope. No dark matter signal is detected. Including the uncertainty in the dark matter distribution, robust upper limits are placed on dark matter annihilation cross sections. The 95% confidence level upper limits range from about 10(-26) cm(3) s(-1) at 5 GeV to about 5 x 10(-23) cm(3) s(-1) at 1 TeV, depending on the dark matter annihilation final state. For the first time, using gamma rays, we are able to rule out models with the most generic cross section (similar to 3 x 10(-26) cm(3) s(-1) for a purely s-wave cross section), without assuming additional boost factors.

  • 2632. Ackermann, M.
    et al.
    Albert, A.
    Anderson, Brandon
    Stockholms universitet, Fysikum.
    Atwood, W. B.
    Baldini, L.
    Barbiellini, G.
    Bastieri, D.
    Bechtol, K.
    Bellazzini, R.
    Bissaldi, E.
    Blandford, R. D.
    Bloom, E. D.
    Bonino, R.
    Bottacini, E.
    Brandt, T. J.
    Bregeon, J.
    Bruel, P.
    Buehler, R.
    Caliandro, G. A.
    Cameron, R. A.
    Caputo, R.
    Caragiulo, M.
    Caraveo, P. A.
    Cecchi, C.
    Charles, E.
    Chekhtman, A.
    Chiang, J.
    Chiaro, G.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Conrad, Jan
    Stockholms universitet, Fysikum.
    Cuoco, A.
    Cutini, S.
    D'Ammando, F.
    de Angelis, A.
    de Palma, F.
    Desiante, R.
    Digel, S. W.
    Di Venere, L.
    Drell, P. S.
    Drlica-Wagner, A.
    Essig, R.
    Favuzzi, C.
    Fegan, S. J.
    Ferrara, E. C.
    Focke, W. B.
    Franckowiak, A.
    Fukazawa, Y.
    Funk, S.
    Fusco, P.
    Gargano, F.
    Gasparrini, D.
    Giglietto, N.
    Giordano, F.
    Giroletti, M.
    Glanzman, T.
    Godfrey, G.
    Gomez-Vargas, G. A.
    Grenier, I. A.
    Guiriec, S.
    Gustafsson, M.
    Hays, E.
    Hewitt, J. W.
    Horan, D.
    Jogler, T.
    Johannesson, G.
    Kuss, M.
    Larsson, Stefan
    Stockholms universitet, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Latronico, L.
    Li, J.
    Li, Liang
    Stockholms universitet, Oskar Klein-centrum för kosmopartikelfysik (OKC).
    Llena Garde, Maja
    Stockholms universitet, Fysikum.
    Longo, F.
    Loparco, F.
    Lubrano, P.
    Malyshev, D.
    Mayer, M.
    Mazziotta, M. N.
    McEnery, J. E.
    Meyer, Manuel
    Stockholms universitet, Fysikum.
    Michelson, P. F.
    Mizuno, T.
    Moiseev, A. A.
    Monzani, M. E.
    Morselli, A.
    Murgia, S.
    Nuss, E.
    Ohsugi, T.
    Orienti, M.
    Orlando, E.
    Ormes, J. F.
    Paneque, D.
    Perkins, J. S.
    Pesce-Rollins, M.
    Piron, F.
    Pivato, G.
    Porter, T. A.
    Raino, S.
    Rando, R.
    Razzano, M.
    Reimer, A.
    Reimer, O.
    Ritz, S.
    Sánchez-Conde, Miguel
    Stockholms universitet, Fysikum.
    Schulz, A.
    Sehgal, N.
    Sgro, C.
    Siskind, E. J.
    Spada, F.
    Spandre, G.
    Spinelli, P.
    Strigari, L.
    Tajima, H.
    Takahashi, H.
    Thayer, J. B.
    Tibaldo, L.
    Torres, D. F.
    Troja, E.
    Vianello, G.
    Werner, M.
    Winer, B. L.
    Wood, K. S.
    Wood, M.
    Zaharijas, G.
    Zimmer, Stephan
    Stockholms universitet, Fysikum.
    Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data2015In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 115, no 23Article in journal (Refereed)
    Abstract [en]

    The dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are some of the most dark matter (DM) dominated objects known. We report on gamma-ray observations of Milky Way dSphs based on six years of Fermi Large Area Telescope data processed with the new PASS8 event-level analysis. None of the dSphs are significantly detected in gamma rays, and we present upper limits on the DM annihilation cross section from a combined analysis of 15 dSphs. These constraints are among the strongest and most robust to date and lie below the canonical thermal relic cross section for DM of mass less than or similar to 100 GeV annihilating via quark and tau-lepton channels.

  • 2633. Ackermann, M.
    et al.
    Albert, A.
    Anderson, Brandon
    Stockholms universitet, Fysikum.
    Baldini, L.
    Ballet, J.
    Barbiellini, G.
    Bastieri, D.
    Bechtol, K.
    Bellazzini, R.
    Bissaldi, E.
    Bloom, E. D.
    Bonamente, E.
    Bouvier, A.
    Brandt, T. J.
    Bregeon, J.
    Brigida, M.
    Bruel, P.
    Buehler, R.
    Buson, S.
    Caliandro, G. A.
    Cameron, R. A.
    Caragiulo, M.
    Caraveo, P. A.
    Cecchi, C.
    Charles, E.
    Chekhtman, A.
    Chiang, J.
    Ciprini, S.
    Claus, R.
    Cohen-Tanugi, J.
    Conrad, Jan
    Stockholms universitet, Fysikum.
    D'Ammando, F.
    de Angelis, A.
    Dermer, C. D.
    Digel, S. W.
    do Couto e Silva, E.
    Drell, P. S.
    Drlica-Wagner, A.
    Essig, R.
    Favuzzi, C.
    Ferrara, E. C.
    Franckowiak, A.
    Fukazawa, Y.
    Funk, S.
    Fusco, P.
    Gargano, F.
    Gasparrini, D.
    Giglietto, N.
    Giroletti, M.
    Godfrey, G.
    Gomez-Vargas, G. A.
    Grenier, I. A.
    Guiriec, S.
    Gustafsson, M.
    Hayashida, M.
    Hays, E.
    Hewitt, J.
    Hughes, R. E.
    Jogler, T.
    Kamae, T.
    Knoedlseder, J.
    Kocevski, D.
    Kuss, M.
    Larsson, Stefan
    Stockholms universitet, Fysikum.
    Latronico, L.
    Garde, Maja Llena
    Stockholms universitet, Fysikum.
    Longo, F.
    Loparco, F.
    Lovellette, M. N.
    Lubrano, P.
    Martinez, Gregory
    Stockholms universitet, Fysikum.
    Mayer, M.
    Mazziotta, M. N.
    Michelson, P. F.
    Mitthumsiri, W.
    Mizuno, T.
    Moiseev, A. A.
    Monzani, M. E.
    Morselli, A.
    Moskalenko, I. V.
    Murgia, S.
    Nemmen, R.
    Nuss, E.
    Ohsugi, T.
    Orlando, E.
    Ormes, J. F.
    Perkins, J. S.
    Piron, F.
    Pivato, G.
    Porter, T. A.
    Raino, S.
    Rando, R.
    Razzano, M.
    Razzaque, S.
    Reimer, A.
    Reimer, O.
    Ritz, S.
    Sanchez-Conde, M.
    Sehgal, N.
    Sgro, C.
    Siskind, E. J.
    Spinelli, P.
    Strigari, L.
    Suson, D. J.
    Tajima, H.
    Takahashi, H.
    Thayer, J. B.
    Tibaldo, L.
    Tinivella, M.
    Torres, D. F.
    Uchiyama, Y.
    Usher, T. L.
    Vandenbroucke, J.
    Vianello, G.
    Vitale, V.
    Werner, M.
    Winer, B. L.
    Wood, K. S.
    Wood, M.
    Zaharijas, G.
    Zimmer, Stephan
    Stockholms universitet, Fysikum.
    Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope2014In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 89, no 4Article in journal (Refereed)
    Abstract [en]

    The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-dominated objects known. Due to their proximity, high dark matter content, and lack of astrophysical backgrounds, dwarf spheroidal galaxies are widely considered to be among the most promising targets for the indirect detection of dark matter via gamma rays. Here we report on.-ray observations of 25 Milky Way dwarf spheroidal satellite galaxies based on 4 years of Fermi Large Area Telescope (LAT) data. None of the dwarf galaxies are significantly detected in. rays, and we present.-ray flux upper limits between 500 MeV and 500 GeV. We determine the dark matter content of 18 dwarf spheroidal galaxies from stellar kinematic data and combine LAT observations of 15 dwarf galaxies to constrain the dark matter annihilation cross section. We set some of the tightest constraints to date on the annihilation of dark matter particles with masses between 2 GeV and 10 TeV into prototypical standard model channels. We find these results to be robust against systematic uncertainties in the LAT instrument performance, diffuse.-ray background modeling, and assumed dark matter density profile.

  • 2634. Ackermann, Paul
    et al.
    Spetea, Mariana
    Nylander, Ingrid
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences.
    Ploj, Karolina
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmaceutical Biosciences.
    Ahmed, Mahmood
    Kreicbergs, Andris
    An opioid system in connective tissue: A study of Achilles tendon in the rat2001In: Journal of Histochemistry and Cytochemistry, ISSN 0022-1554, E-ISSN 1551-5044, Vol. 49, no 11, p. 1387-1395Article in journal (Refereed)
    Abstract [en]

    The occurrence of endogenous opioids and their receptors in rat achilles tendon was analyzed by immunohistochemistry (IHC), radioimmunoassay (RIA), and in vitro binding assays. The investigation focused on four enkephalins, dynorphin B, and nociceptin/orphanin FQ. Nerve fibers immunoreactive to all enkephalins (Met-enkephalin, Leu-enkephalin, Met-enkephalin-Arg-Gly-Lys, Met-enkephalin-Arg-Phe) were consistently found in the loose connective tissue and the paratenon, whereas dynorphin B and nociceptin/orphanin FQ could not be detected. The majority of enkephalin-positive nerve fibers exhibited varicosities predominantly seen in blood vessel walls. Measurable levels of Met-enkephalin-Arg-Phe and nociceptin/orphanin FQ were found in tendon tissue using RIA, whereas dynorphin B could not be detected. In addition to the endogenous opioids identified, delta -opioid receptors on nerve fibers were also detected by IHC. Binding assays to characterize the opioid binding sites showed that they were specific and saturable for [H-3]-naloxone (K-d 7.01 +/- 0.98 nM; B-max 23.52 +/- 2.23 fmol/mg protein). Our study demonstrates the occurrence of an opioid system in rat achilles tendon, which may be assumed to be present also in other connective tissues of the locomotor apparatus. This system may prove to be a useful target for pharmacological therapy in painful and inflammatory conditions by new drugs acting selectively in the periphery.

  • 2635.
    Ackermann-Boström, Constanze
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Modern Languages, German.
    Gelebte Mehrsprachigkeit im Plattenbau: Untersuchungen von Narrativen und Praktiken russlanddeutscher junger Erwachsener2018Doctoral thesis, monograph (Other academic)
    Abstract [en]

    This thesis focuses on the lived multilingualism of a group of young Russian-German adults who as children migrated together with their families from post-Soviet states to the Federal Republic of Germany during the 1990s. Today these adults live in a ‘Plattenbau’ housing estate in a small town in one of the new federal states of Germany. The large pre-fabricated concrete-slab system-built housing estates that were built during the GDR-era are today generally considered as deprived areas due a combination of decreasing population and high unemployment.

    This thesis shows how young Russian-Germans create a multilingual community of practice and use various aspects of language and non-linguistic resources for identity construction. The data analysed in this thesis comes from ethnographic studies conducted during three phases of fieldwork between Spring 2011 and Spring 2012. The data was collected at a youth centre where the group of young Russian-German adults regularly met.

    Combining intensive participant observation, field notes, photos, and narrative interviews the thesis is a mixed-method investigation. Underpinning the analysis of the research data are theoretical models of the relationship between language, identity, and space. Methodologically this study combines linguistic ethnography, narrative analysis, and membership categorization analysis.

    The thesis argues that an ethnographical-narrative approach is a powerful tool that is able to highlight the role of language(s) and non-linguistic resources for identity construction in social spaces, illustrates how young Russian-Germans construct a web of multilingual identities by using social categories to position themselves and others, and shows how the lived multilingualism of  young Russian-German adults influences all aspects of their social lives. For example, the thesis shows the maintenance of Russian as a heritage language within Russian-German families, yet and an avoidance of visible signs of the Russian-German heritage in public spaces.

  • 2636.
    Ackermann-Boström, Constanze
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Modern Languages.
    "In Deutschland wird nicht gelogen." Eine Fallstudie zur sprachlichen Identität einer Spätaussiedlerin in Sprachbiographien2015In: Visionen und Illusionen: Beiträge zur 11. Arbeitstagung schwedischer Germanistinnen und Germanisten, Text im Kontext in Göteborg am 4./5. April 2014 / [ed] Magnus P. Ängsal, Frank Thomas Grub, Frankfurt am Main: Peter Lang Publishing Group, 2015, p. 41-50Chapter in book (Refereed)
  • 2637.
    Ackermann-Boström, Constanze
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Modern Languages.
    Introduction to linguistics. A Workbook for Beginners2012In: Studia Neophilologica, ISSN 0039-3274, E-ISSN 1651-2308, Vol. 84, no 2, p. 221-223Article, book review (Other academic)
  • 2638.
    Ackermann-Boström, Constanze
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Modern Languages.
    Soziale Kategorisierung und Positionierung als Mittel der Identitätsherstellung2013In: Perspektiven: Das IX. Nordisch-Baltische Germanistentreffen, 14.- 16. Juni 2012 in Bergen/Os / [ed] Michael Grote, Kjetil Berg Henjum, Espen Ingebritsen, Jan Paul Pietzuch, Stockholm: US-AB , 2013, p. 383-394Chapter in book (Refereed)
  • 2639.
    Ackermann-Boström, Constanze
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Modern Languages.
    "Wenn ich schimpfe, dann schimpfe ich auf Russisch.": Fallstudie zu Sprache und Sprachgebrauch einer russlanddeutschen Aussiedlerin2009Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 2640.
    Ackum Agell, Susanne
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Economics.
    Swedish Labor Market Programs: Efficiency and Timing1995In: Swedish Economic Policy Review, ISSN 1400-1829, Vol. 2, no 1Article in journal (Refereed)
  • 2641.
    Ackum Agell, Susanne, Björklund, Anders and Harkman, A.
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Economics.
    Unmployment Insurance, Labour Market Programmes and Repeated Unemployment in Sweden1995In: Swedish Economic Policy Review, ISSN 1400-1829, Vol. 2, no 1Article in journal (Refereed)
  • 2642. Ackum Agell, Susanne
    et al.
    Lundin, Martin
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Government.
    Erfarenheter av svensk arbetsmarknadspolitik2001In: Ekonomisk debatt, Vol. 29, no 4, p. 239-250Article in journal (Other (popular scientific, debate etc.))
  • 2643. Ackum Agell, Susanne
    et al.
    Lundin, Martin
    Uppsala University, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Faculty of Social Sciences, Department of Government.
    Notes on Swedish Labour Market Policy2002In: Towards Higher Employment: The Role of Labour Market Institutions, VAT, Helsingfors , 2002, p. 97-111Chapter in book (Other (popular scientific, debate etc.))
  • 2644.
    Acocella, V.
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Earth Sciences, Department of Earth Sciences.
    Mulugeta, G.
    Experiments simulating surface deformation induced pluton emplacement.2002In: Tectonophysics, Vol. 352, p. 275-293Article in journal (Refereed)
  • 2645.
    Acocella, V
    et al.
    Uppsala University, Teknisk-naturvetenskapliga vetenskapsområdet, Earth Sciences, Department of Earth Sciences.
    Mulugeta, G
    Surface deformation induced by pluton emplacement: The case of Amiata (Italy)2001In: PHYSICS AND CHEMISTRY OF THE EARTH PART A-SOLID EARTH AND GEODESY, ISSN 1464-1895, Vol. 26, no 4-5, p. 355-362Article in journal (Refereed)
    Abstract [en]

    The Amiata area was uplifted during the Pliocene as a consequence of pluton emplacement in an extensional setting. In the Middle Pleistocene, a fissural eruption filled a depression within the uplifted area. Field analysis and analogue models are integrat

  • 2646.
    Acosta, Cecilia M.
    et al.
    Hosp Privado Comunidad Mar Del Plata, Dept Anesthesia, Cordoba 4545, RA-7600 Buenos Aires, DF, Argentina..
    Tusman, Gerardo
    Hosp Privado Comunidad Mar Del Plata, Dept Anesthesia, Cordoba 4545, RA-7600 Buenos Aires, DF, Argentina..
    Costantini, Mauro
    Hosp Privado Comunidad Mar Del Plata, Dept Anesthesia, Cordoba 4545, RA-7600 Buenos Aires, DF, Argentina..
    Echevarria, Camila
    Hosp Privado Comunidad Mar Del Plata, Dept Radiol, Buenos Aires, DF, Argentina..
    Pollioto, Sergio
    Hosp Privado Comunidad Mar Del Plata, Dept Pediat Surg, Buenos Aires, DF, Argentina..
    Abrego, Diego
    Hosp Privado Comunidad Mar Del Plata, Dept Pediat Surg, Buenos Aires, DF, Argentina..
    Suarez-Sipmann, Fernando
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Anaesthesiology and Intensive Care. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Hedenstierna laboratory. Inst Salud Carlos III, CIBER Enfermedades Resp, Madrid, Spain..
    Bohm, Stephan H.
    Swisstom AG, Landquart, Switzerland..
    Doppler images of intra-pulmonary shunt within atelectasis in anesthetized children2016In: Critical Ultrasound Journal, ISSN 2036-3176, E-ISSN 2036-7902, Vol. 8, article id 19Article in journal (Refereed)
    Abstract [en]

    Background: Doppler images of pulmonary vessels in pulmonary diseases associated with subpleural consolidations have been described. Color Doppler easily identifies such vessels within consolidations while spectral Doppler analysis allows the differentiation between pulmonary and bronchial arteries. Thus, Doppler helps in diagnosing the nature of consolidations. To our knowledge, Doppler analysis of pulmonary vessels within anesthesia-induced atelectasis has never been described before. The aim of this case series is to demonstrate the ability of lung ultrasound to detect the shunting of blood within atelectatic lung areas in anesthetized children.

    Findings: Three anesthetized and mechanically ventilated children were scanned in the supine position using a high-resolution linear probe of 6-12 MHz. Once subpleural consolidations were detected in the most dependent posterior lung regions, the probe was rotated such that its long axis followed the intercostal space. In this oblique position, color Doppler mapping was performed to detect blood flow within the consolidation. Thereafter, pulsed waved spectral Doppler was applied in the previously identified vessels during a short expiratory pause, which prevented interferences from respiratory motion. Different flow patterns were identified which corresponded to both, pulmonary and bronchial vessels. Finally, a lung recruitment maneuver was performed which leads to the complete resolution of the aforementioned consolidation thereby confirming the pathophysiological entity of anesthesia-induced atelectasis.

    Conclusions: Lung ultrasound is a non-invasive imaging tool that not only enables the diagnosis of anesthesia-induced atelectasis in pediatric patients but also analysis of shunting blood within this consolidation.

  • 2647. Acosta, Oscar
    et al.
    Frimmel, Hans
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Scientific Computing. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computerized Image Analysis.
    Fenster, Aaron
    Ourselin, Sébastien
    Filtering and restoration of structures in 3D ultrasound images2007In: Proc. 4th International Symposium on Biomedical Imaging, Piscataway, NJ: IEEE , 2007, p. 888-891Conference paper (Refereed)
  • 2648. Acosta, Oscar
    et al.
    Frimmel, Hans
    Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Scientific Computing. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computerized Image Analysis.
    Fenster, Aaron
    Salvado, Olivier
    Ourselin, Sébastien
    Pyramidal flux in an anisotropic diffusion scheme for enhancing structures in 3D images2008In: Medical Imaging 2008: Image Processing, Bellingham, WA, 2008, p. 691429:1-12Conference paper (Refereed)
  • 2649.
    Acosta, Rafael
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Enajat, Morteza
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Rozen, Warren M.
    Smit, Jeroen M.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Wagstaff, Marcus J. D.
    Whitaker, Iain S.
    Audolfsson, Thorir
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Performing two DIEP flaps in a working day: an achievable and reproducible practice2010In: Journal of Plastic, Reconstructive and Aesthetic Surgery, ISSN 1748-6815, Vol. 63, no 4, p. 648-654Article in journal (Refereed)
    Abstract [en]

    Background: While the deep inferior epigastric artery perforator (DIEP) flap is a reliable technique for autologous breast reconstruction, the meticulous dissection of perforators may require lengthy operative times. In our unit, we have performed 600 free flaps for breast reconstruction over 8 years and have reduced operative times with a combination of preoperative computed tomographic angiography (CTA), various anastomotic techniques and the Cook-Swartz implantable Doppler probe for perfusion monitoring. We sought to assess the feasibility of performing two DIEP flaps within the working hours of a single day. Methods: A review of 101 consecutive patients undergoing DIEP flap breast reconstruction in a 12-month period was performed, comparing one DIEP flap per day (n=43) to two DIEP flaps per day (n=58). Complications, outcomes and techniques used were critically analysed. For cases of two DIEP flaps per day, a comparison was made between the use of two separate operating theatres (n=44) and a single consecutive theatre (n=14). Results: Complications did not increase when two DIEP flaps were performed in a single working day. The use of vascular closure staple (VCS) sutures and ring couplers resulted in statistically significant reductions in anastomotic times. The use of two separate theatres for performing two DIEP flaps resulted in a reduction of 59 min in operative time per case (p=0.004). Conclusion: Two DIEP flaps can be safely and routinely performed within the hours of a single working day. By minimising operative times, these techniques can improve productivity and substantially decrease surgeon fatigue.

  • 2650.
    Acosta, Rafael
    et al.
    Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Plastic Surgery.
    Rozen, Warren M.
    Whitaker, Iain S.
    Banking of the DIEP Flap: A "Previously Described New Technique" Reply2010In: Plastic and reconstructive surgery (1963), ISSN 0032-1052, E-ISSN 1529-4242, Vol. 126, no 4, p. 1407-1409Article in journal (Refereed)
50515253545556 2601 - 2650 of 246780
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