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  • Waern, Margda
    et al.
    Waern, Margda
    Kaiser, Niclas
    Umeå University, Faculty of Social Sciences, Department of Psychology. Umeå University, Faculty of Medicine, Department of Clinical Sciences, Psychiatry.
    Salander Renberg, Ellinor
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Psychiatry.
    Psychiatrists' experiences of suicide assessment2016In: BMC Psychiatry, ISSN 1471-244X, E-ISSN 1471-244X, Vol. 16, 440Article in journal (Refereed)
    Abstract [en]

    Background: Clinical guidelines for suicide prevention often stress the identification of risk and protective factors as well as the evaluation of suicidal intent. However, we know very little about what psychiatrists actually do when they make these assessments. The aim was to investigate psychiatrists' own accounts of suicide assessment consultations, with a focus on their behaviors, attitudes and emotions.

    Method: Semi-structured in depth interviews were carried out with a purposive selection of 15 psychiatrists.

    Results: Thematic analysis revealed three main themes: understanding the patient in a precarious situation, understanding one's own reactions, and understanding how the doctor-patient relationship impacted on risk assessment and management decisions. Emotional contact and credibility issues were common subthemes that arose when the respondents talked about trying to understand the patient. The psychiatrists stressed the semi-intuitive nature of their assessments. Problems related to the use of risk factor assessments and rating scales were apparent. Assessment consultations could evoke physical and emotional symptoms of anxiety, and concerns about responsibility could lead to repressive management decisions. In situations of mutual trust, however, the assessment consultation could kick-start a therapeutic process.

    Conclusion: This study highlights psychiatrists' experiences in clinical suicide assessment situations. Findings have implications for professional development as well as for service delivery.

  • Boström, Martina
    et al.
    Jönköping University, School of Health and Welfare, HHJ, Institute of Gerontology. Jönköping University, School of Health and Welfare, HHJ. ARN-J (Aging Research Network - Jönköping).
    Boström, Martina
    Jönköping University, School of Health and Welfare, HHJ, Institute of Gerontology. Jönköping University, School of Health and Welfare, HHJ. ARN-J (Aging Research Network - Jönköping).
    Ekberg, Kristina
    Enheten för projektledning och verksamhetsutveckling i Jönköpings Kommun.
    Ernsth-Bravell, Marie
    Jönköping University, School of Health and Welfare, HHJ, Institute of Gerontology. Jönköping University, School of Health and Welfare, HHJ. ARN-J (Aging Research Network - Jönköping).
    Ågren, Helena
    Jönköpings kommun.
    Stärka tryggheten i flytt till särskilt boende2016In: 10 förbättringar från DIALOGEN: En långsiktig strategi för att utveckla en innovativ, sammanhållen och hållbar socialtjänst / [ed] Stefan Österström, Jönköping: Jönköpings kommun, socialtjänsten , 2016, 133-150 p.Chapter in book (Other academic)
    Abstract [sv]

    De flesta kan kanske känna igen sig i en situation då flytt till särskilt boende blir aktuellt, oavsett om det gäller en nära anhörigs flytt eller sin egen. Våra skäl och orsaker till flytten kan variera men behovet av vård och omsorg är ofta detsamma. I en tid av livet då skörheten gör sig påmind och behovet av hjälp och stöd ökar, kan flytten bli ett känslosamt möte mellan det förflutna och en oviss framtid. Att arbeta för att få den äldre personen att känna trygghet under hela flyttprocessen och även under den första tiden på det särskilda boendet blir därför viktigt. Socialtjänsten och Hälsohögskolan har sedan 2013 genomfört ett samverkansprojekt i syfte att fördjupa kunskapen om äldres upplevelse av trygghet i flyttprocessen, för att på så vis förbättra och stärka den.

  • Sarneel, Judith M.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Ecology and Biodiversity Group and Plant Ecophysiology Group, Utrecht University, Utrecht, The Netherlands.
    Sarneel, Judith M.
    Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences. Ecology and Biodiversity Group and Plant Ecophysiology Group, Utrecht University, Utrecht, The Netherlands.
    Effects of experimental snowmelt and rain on dispersal of six plant species2016In: Ecohydrology, ISSN 1936-0584, E-ISSN 1936-0592, Vol. 9, no 8, 1464-1470 p.Article in journal (Refereed)
    Abstract [en]

    Water flows affect dispersal of propagules of many plant species, and rivers and streams are therefore very important dispersal vectors. However, small water flows such as trough rain and snowmelt are much more common, but their effects on dispersal are barely studied. The importance of this form of dispersal deserves attention, especially when considering that climate change is predicted to change the amounts of rain and snow worldwide. Dispersal through melting snow and rain was addressed experimentally, using artificial soils mounted on slopes with different angles and subjected to a melting snow pack or an equivalent amount of dripping water. Seeds on the soil moved on average 3.02 cm (+/- 1.81 SE) in rain treatments and 0.23 cm (+/- 0.3 SE) in snowmelt treatments. Tracking plastic granules in field conditions further showed that snowmelt exhibited minimal dispersal capacity. Dispersal distances by rain were enhanced by increasing slope angles and with decreasing seed volume. Given that many species in cold environments have small seeds, dispersal by rain could provide an important (secondary) dispersal mechanism in these habitats.

  • Hahn, Niklas
    et al.
    Swedish Environmental Protection Agency . Brockmann Geomatics.
    Hahn, Niklas
    Swedish Environmental Protection Agency . Brockmann Geomatics.
    Wester, Kjell
    Swedish Environmental Protection Agency . Brockmann Geomatics.
    Satellitbaserad övervakning av våtmarker: Slutrapport Värmlands, Västra Götalands och Örebro län2015Report (Other academic)
    Abstract [sv]

    En satellitbaserad metodik för att identifiera snabba vegetationsförändringar i våtmarker har använts för att hitta områden med förändringsindikation. Undersökningsområdet består av Värmlands, Västra Götalands och Örebro län. Projektet drivs inom ramen för den nationella miljöövervakningen och är tänkt att genomföras enligt ett löpande schema över landet fördelat på olika undersökningsområden.

    Under perioden 2014-2015 utfördes "Satellitbaserad övervakning av våtmarker" i Värmlands, Västra Götalands och Örebro län. Den satellitbaserade övervakningen är utformad för att upptäcka markanvändningsrelaterade förändringar i öppna myrar i form av ökad biomassa/igenväxning. Till förändringsanalysen för en tidsperiod används två set av satellitdata, ett från en äldre tidpunkt "1997" (satellitdata främst från 1997 men även från 1995, 1999 och 2000) och ett från en senare tidpunkt "2007" (satellitdata främst från 2007 men även från 2009 och 2010).

    Förändrade områden delas in i två förändringsklasser; potentiell och säker förändringsindikation med en minsta karteringsenhet på 0,5 ha. Förändringsklasserna ger en direkt indikation på styrkan och omfattningen av förändringen. Förändringsklassningen redovisas även som förändringskartor: andel säker förändringsindikation per analyserad öppen myr presenterade inom olika områdes- eller regionsindelningar. Exempel på intressanta områdesindelningar som redovisas är indexrutor 10km och delavrinningsområden.

    Undersökningsområdet, d.v.s. "Öppen myr" -mask med undantag för fjällen, omfattar totalt ca 233 000 ha. Det analyserbara området, d.v.s. undersökningsområdet med undantag för moln mm, motsvarar ca 90 % av det totala undersökningsområdet.

    Av det totala analyserbara området visade 3 100 ha (1,46 %) säker förändringsindikation och 1 800 ha (0,84 %) potentiell förändringsindikation.

    Utvärderingen, som utfördes med hjälp av flygbildstolkning och fältbesök, visar att överensstämmelsen för de 127 slumpmässigt valda förändringsindikationsytorna ligger minst på 62 % och max på 86 %.

    Motsvarande överensstämmelse för de 38 slumpmässigt valda referensytorna ligger minst på 84 % och max på 95 %.

  • Löflund, Emma-Lina
    Stockholm University, Faculty of Humanities, Department of Slavic and Baltic Studies, Finnish, Dutch, and German, Slavic Languages.
    Löflund, Emma-Lina
    Stockholm University, Faculty of Humanities, Department of Slavic and Baltic Studies, Finnish, Dutch, and German, Slavic Languages.
    Marianna S. Landa: Maximilian Voloshin’s Poetic Legacy and the Post-Soviet Russian Identity2016In: Slovo: Journal of Slavic Languages, Literatures and Cultures , ISSN 2001-7395, no 57, 78-85 p.Article, book review (Other academic)
  • Hultqvist, Sara
    et al.
    Ph.D, lektor, Socialhögskolan, Lunds universitet.
    Hultqvist, Sara
    Ph.D, lektor, Socialhögskolan, Lunds universitet.
    Nørup,, Iben
    Post doc, Ph.D., Institut for Sociologi og Socialt Arbejde, Aalborg Universitet.
    Sjukskrivning och genus i Norden: Vad vi vet och vad vi inte vet2016Article, review/survey (Other (popular science, discussion, etc.))
    Abstract [sv]

    Nordens välfärdscenter projekt Sjukskrivning och genus i Norden - vad vi vet och vad vi inte vet ärett uppdrag från Nordiska ministerrådet för social- och hälsopolitik. Projektets huvudsakliga syfteär att göra en nordisk forskningssammanställning om den psykiska hälsan utifrån ett genusperspektiv.

    Könsskillnader i sjukfrånvaron förekommer, om än i varierande grad, i samtliga nordiska länder.Avsikten med forskningsgenomgången är att få till stånd en bättre jämförande översikt över politikenpå området. Detta kan underlätta erfarenhetsutbyte om effekter av politik samt främjaytterligare samarbete på området. Det är vår förhoppning att rapporten ska bidra till en ökadkunskap om sambanden mellan psykisk ohälsa, arbetsliv och sjukfrånvaro i Norden och i vad månförekomsten av skillnader i sjukskrivningar på grund av psykisk ohälsa skiljer sig åt mellan ländernasamt huruvida det finns könsskillnader som i detta avseende bör beaktas.

    Vi hoppas att kartläggningen kan leda till fördjupade nordiska studier och insatser, både på gemensamnordisk nivå och i respektive land.

  • Public defence: 2017-02-10 10:15 Häggsalen, Uppsala
    Yang, Wenxing
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Yang, Wenxing
    Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
    Exploring Electronic Processes at the Mesoporous TiO2/Dye/Electrolyte Interface2017Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Dye sensitized solar cells (DSSCs) are an attractive way to convert light into electricity. Its development requires a detailed understanding and kinetic optimization of various electronic processes, especially those occurring at the mesoporous TiO2/dye/electrolyte interface. This dissertation work is focused on the exploration of the various electronic processes at the sensitized-electrode/electrolyte interface by using various electrochemical and photochemical methods.

    Firstly, an alternative redox couple—TEMPO/TEMPO·+ with a relatively high positive redox potential—is explored, aiming to reduce the energy loss during the dye regeneration process. Despite the fast dye regeneration, the charge recombination between the electrons in the conduction band of mesoporous TiO2 and the oxidized redox species is found to be the limiting factor of the device. Further, a more efficient tandem-electrolyte system is developed, leading to DSSCs with the power conversion efficiency of 10.5 % and 11.7 % at 1 sun and 0.5-sun illumination, respectively. An electron-transfer cascade process during dye regeneration by the redox mediators is discovered to be beneficial. Further stability studies on the device suggest the crucial role of TiO2/dye/electrolyte interfaces in the long-term stability of cobalt bipyridyl electrolyte-based DSSCs.

    On the fundamental level, the local electric field and Stark effects at the TiO2/dye/electrolyte interface are investigated in various aspects—including the charge compensation mechanism, the factors affecting the electric field strength, as well as its impact on charge transfer kinetics. These results give further insights about the TiO2/dye/electrolyte interface, and contribute to the further development and understanding of DSSCs.

  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Some estimates for the mean curvature of nonparametric surfaces defined over domains in $R^n$1994In: Journal of Mathematical Sciences, ISSN 1072-3374, E-ISSN 1573-8795, Vol. 72, no 4, 3250-3260 p.Article in journal (Refereed)
  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Life-time of minimal tubes and coefficients of univalent functions in a circular ring1995In: Bulletin de la Société des sciences et des lettres de Lódz, ISSN 0459-6854, Vol. 20, 19-26 p.Article in journal (Refereed)
  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Finiteness of the number of ends of minimal submanifolds in Euclidean space1994In: Manuscripta mathematica, ISSN 0025-2611, E-ISSN 1432-1785, Vol. 82, 313-330 p.Article in journal (Refereed)
  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    A remark on the Jörgens-Calabi-Pogorelov theorem1995In: Doklady. Mathematics, ISSN 1064-5624, E-ISSN 1531-8362, Vol. 340, 317-318 p.Article in journal (Refereed)
  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Some estimates for the mean curvature of graphs over domains in $R^n$1991In: Doklady. Mathematics, ISSN 1064-5624, E-ISSN 1531-8362, Vol. 42, no 2, 387-390 p.Article in journal (Refereed)
  • Miklyukov, Vladimir
    et al.
    Volgograd State University.
    Miklyukov, Vladimir
    Volgograd State University.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    The structure in the large of externally complete minimal surfaces in $R^3$1987In: Izvestiia vysshikh uchebnykh zavedenii. Matematika (Izvestija Vuzov. Mathematics), ISSN 0021-3446, Vol. 31, no 7, 37-35 p.Article in journal (Refereed)
    Abstract [en]

    We establish the absence of nontrivial noncompact parametric minimal surfaces in the Euclidean 3-space satisfying some additional geometrical properties.

  • Miklyukov, Vladimir
    et al.
    Volgograd State University.
    Miklyukov, Vladimir
    Volgograd State University.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Some properties of tube minimal surfaces of arbitrary codimension1989In: Sbornik. Mathematics, ISSN 1064-5616, E-ISSN 1468-4802, Vol. 180, 1278-1295 p.Article in journal (Refereed)
    Abstract [en]

    We establish the finiteness of life-time of a tubular minimal surface of an arbitrary codimension.

  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Denjoy-Ahlfors theorem for harmonic functions on Riemannian manifolds and external structure of minimal surfaces1996In: Communications in analysis and geometry, ISSN 1019-8385, E-ISSN 1944-9992, Vol. 4, no 4, 547-587 p.Article in journal (Refereed)
    Abstract [en]

    We extend the well-known Denjoy-Ahlfors theorem about the number of different asymptotic tracts of a holomorphic function to subharmonic functions on arbitrary Riemannian manifolds. We obtain some versions of the Liouville theorem for Aa-harmonic functions without the geodesic completeness requirement on a manifold. Moreover, the upper estimate of the topological index of the height function of a minimal surface in Rn has been established and, as a consequence, a new prove of the Bernstein's theorem has been derived. Other applications to the theory of minimal surfaces are also discussed.

  • Öhman, Anna
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013).
    Öhman, Anna
    Karlstad University, Faculty of Arts and Social Sciences (starting 2013).
    Kameraanvändning i videoobservation2016In: Kapet (elektronisk), E-ISSN 2002-3979, Vol. 12, no 2, 75-85 p.Article in journal (Other academic)
  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    A theorem on the clearance radius for minimal surfaces1996In: Mathematical notes of the Academy of Sciences of the USSR, ISSN 0001-4346, E-ISSN 1573-8876, Vol. 59, no 5-6, 657-660 p.Article in journal (Refereed)
    Abstract [en]

    A least upper bound for the inner radius of an opening in a complete minimal hypersurface contained in a parallel layer is given. 

  • Gunnarsson, Carina
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Gunnarsson, Carina
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Anerud, Erik
    Jonsson, Nils
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Iwarsson Wide, Maria
    Segerborg Fick, Anna
    RISE, SP – Sveriges Tekniska Forskningsinstitut, JTI Institutet för Jordbruks- och Miljöteknik.
    Optimerad lagring av biomassa: en strategisk innovationsagenda2016Report (Other academic)
    Abstract [sv]

    I dag finns stor kunskap inom området lagring av biomassa, även om kunskapen i delar är fragmenterad. Inom energiområdet finns problem med både lagringsförluster och arbetsmiljö. Vid lagring av grödor till foder och livsmedel är bibehållen kvalitet hos biomassan under lagring en förutsättning, och mycket forskning och utveckling har bedrivits inom detta område. Genom samverkan mellan olika områden skapar vi förutsättningar att tänka i nya banor och öka möjligheterna för en optimerad lagring av biomassa. Arbetet med agendan har gett nya gränsöverskridande diskussioner och samarbeten. Med en förväntad kraftigt ökad efterfrågan och därmed konkurrens om biomassa blir effektivitet och hållbarhet nyckelfaktorer för fortsatt god tillgång. Kontinuerliga förbättringar i alla led av tillförselkedjan är nödvändiga för att hantera dessa i grunden positiva marknadsförändringar. Ett billigare och mer homogent bio-bränsle från jord- och skogsbruk leder till ökad konkurrenskraft gentemot andra idag billigare bränslen. Vid biobaserad värme- och kraftvärmeproduktion står bränslet för en av de största kostnadsposterna, vilket gör hantering och lagring med låga förluster högt prioriterat. Biobränslen från jord- och skogsbruk har en hög fukthalt vid skörd, vilket innebär att de har låg lagringsstabilitet. För att få ned kostnaderna för hantering och lagring, och kunna leverera efterfrågade kvaliteter och därmed öka bio-bränslenas konkurrenskraft, behövs mer kunskap om vad som händer med bränslet under olika lagringsförhållanden med olika lagrings- och hanteringsmetoder. Grundläggande och fördjupade kunskaper för att bedöma lagringsstabiliten för biomassa, framför allt livsmedelsbaserade såsom spannmål och rapsfrö, finns och är helt nödvändig för att garantera livsmedelssäkerhet. Dessa erfarenheter kan användas för att öka kunskapen om lagringsstabilitet och lagringsförluster hos biomassa som helhet. Denna agenda har tagits fram i samverkan mellan forskare från jord- och skogsbruk samt representanter från råvaruproducenter och energibolag som slutanvändare. Agendans syfte är att skapa ett bra utgångs-läge för en effektivare hantering av biomassa genom kunskapsöverföring mellan branscher. Agendans mål är ta fram forskningsbehov för utveckling och innovationer inom området som ska leda till effektiv och kvalitetssäkrad hantering av biomassa. Fokus är användning av biomassa inom energisektorn. Agendan avgränsas till att omfatta primära och sekundära oförädlade biobränslen från skogsbruk och jordbruk samt återvunna trädbränslen för värme- och kraftvärmeproduktion för anläggningar större än 1 MW. Vår vision är att använda biobränslets fulla potential genom kontrollerad lagring med låga förluster som ger effektiva och lönsamma leveranser med förutsägbar och homogen kvalitet utan hälsorisker. Vid två workshops på JTI i Uppsala träffades deltagarna för att identifiera kunskapsluckor, forskningsbehov och aktiviteter. För att inkludera synpunkter från fler aktörer genomfördes telefonintervjuer med ytterligare personer med koppling till biomassalagring.

  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    External geometry of p-minimal surfaces1997In: Geometry from Pacific Rim / [ed] Berrick, A. Jon / Loo, Bonaventure / Wang, Hong-Yu, Walter de Gruyter, 1997, , 363–375 p.363-376 p.Conference paper (Refereed)
    Abstract [en]

    We introduce a new class of p-minimal surfaces. We shaw that the Gauss map of a two-dimensional p-minimal surface in R3 is quasiconformal . A counterpart to Bernstein's celebrated result about entire solutions of the minimal surface equation is obtained. A study of tubular p-minimal hypersurfaces is included. 

  • Stuer-Lauridsen, Frank
    et al.
    Stuer-Lauridsen, Frank
    Sanderbo, Jesper
    IMOs ballastvandskonvention i nordiske småsamfund: – resultater fra en nordisk workshop2017Report (Other academic)
    Abstract [da]

    I juni 2016 afholdte Nordisk Ministerråds Småsamfundsgruppe under arbeidsgruppen för baerdedyktig konsumtion og produktion en workshop om implementering af IMOs ballastvandskonvention i nordiske småsamfund. Workshoppen fandt sted i København, og blev arrangeret i samarbejde med LITEHAUZ.

    Denne rapport er et samlet workshop- og projektdokument som indeholder information om selve workshoppens program og indhold, præsentationer, korte referater af workshopdeltagernes gruppearbejde og opsummeringer med fokus på de forvaltningsmæssige udfordringer og løsninger, som workshoppen er nået frem til.

  • Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Minimal tubes of finite integral curvature1998In: Siberian mathematical journal, ISSN 0037-4466, E-ISSN 1573-9260, Vol. 39, no 1, 159-167 p.Article in journal (Refereed)
  • Tkachev, Vladimir
    et al.
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Kuznetsova, Olga S.
    Saratov State University.
    Asymptotic properties of solutions of the Hele-Shaw equation1999In: Doklady. Mathematics, ISSN 1064-5624, E-ISSN 1531-8362, Vol. 367, no 2, 164-165 p.Article in journal (Refereed)
  • Tkachev, Vladimir
    et al.
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Reshetnikova, Irina
    Volgograd State University.
    On the Gauss map of embedded minimal tubes1999In: Note di Matematica, ISSN 1123-2536, E-ISSN 1590-0932, Vol. 19, no 1, 7-17 p.Article in journal (Refereed)
    Abstract [en]

    A surface is called a tube if its level-sets with respect to some coordinate function (the axis of the surface) are compact. Any tube of zero mean curvature has an invariant, the so-called flow vector. We study how the geometry of the Gaussian image of a higher-dimensional minimal tube M is controlled by the angle alpha(M) between the axis and the flow vector of M. We prove that the diameter of the Gauss image of M is at least 2alpha(M). As a consequence we derive an estimate on the length of a two-dimensional minimal tube M in terms of alpha(\M) and the total Gaussian curvature of M.

  • Engelhardt, Ilka. A. D.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Space Plasma Physics. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
    Engelhardt, Ilka. A. D.
    Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Space Plasma Physics. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Swedish Institute of Space Physics, Uppsala Division.
    Plasma and Dust at Saturn's Icy Moon Enceladus and Comet 67P/Churyumov-Gerasimenko2016Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    Saturn’s moon Enceladus and comet 67P/Churyumov-Gerasimenko both are examples of icy solar system objects from which gas and dust flow into space. At both bodies, the gas becomes partly ionized and the dust grains get charged. Both bodies have been visited by spacecraft carrying similar Langmuir probe instruments for observing the plasma and the charged dust. The conditions at Enceladus and the comet turn out to be different, so we emphasize different aspects of their plasma environments. At Enceladus, we concentrate on the characteristic plasma regions and charged dust. At the comet, we investigate cold electrons.

    At Enceladus, internal frictional heating leads to gas escaping from cracks in the ice in the south pole region. This causes a plume of gas, which becomes partially ionized, and dust, becoming charged. We have investigated the plasma and charged nanodust in this region by the use of the Langmuir Probe (LP) of the Radio and Plasma Wave Science (RPWS) instrument on Cassini. The dust charge density can be calculated from the quasineutrality condition, the difference between ion and electron density measurements from LP. We found support for this method by comparing to measurements of larger dust grains by the RPWS electric antennas. We use the LP method to find that the plasma and dust environment of Enceladus can be divided into at least three regions. In addition to the well known plume, these are the plume edge and the trail region.

    At the comet, heat from the Sun sublimates ice to gas dragging dust along as it flows out into space. When gas molecules are hit by ionizing radiation we get a plasma. Models predict that the electron temperature just after ionization is around 10 eV, but that this collisions with the neutral gas should cool the electrons to below 0.1 eV. The Langmuir Probe instrument LAP has previously been used to show that the warm component exists at the comet. We present the first measurements of the cold component, co-existing with the warm component. We find that that the cold plasma often is observed as brief pulses in the LAP data, which we interpret as filamentation of the cold plasma.

  • Tkachev, Vladimir
    et al.
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Tkachev, Vladimir
    Linköping University, Department of Mathematics, Mathematics and Applied Mathematics. Linköping University, Faculty of Science & Engineering.
    Sergienko, Vladimir
    Volgograd State University.
    Doubly periodic maximal surfaces with singularities2002In: Siberian Advances in Mathematics, ISSN 1055-1344, Vol. 12, no 1, 77-91 p.Article in journal (Refereed)
    Abstract [en]

    We construct and study a family of double-periodic almost entire solutions of the maximal surface equation. The solutions are parameterized by a submanifold of 3×3-matrices (the so-called generating matrices). We show that the constructed solutions are either space-like or of mixed type with the light-cone type isolated singularities.

  • Ergül, Adem Björn
    KTH, School of Engineering Sciences (SCI), Applied Physics, Functional Materials, FNM. Jet Propulsion Laboratory, Caltech.
    Ergül, Adem Björn
    KTH, School of Engineering Sciences (SCI), Applied Physics, Functional Materials, FNM. Jet Propulsion Laboratory, Caltech.
    Magnesium Diboride (MgB2) & Molybdenum Silicide (MoSi) Superconducting Nanowires2016Book (Other academic)
  • Bylin, Maria
    Stockholm University, Faculty of Humanities, Department of Swedish Language and Multilingualism, Scandinavian Languages.
    Bylin, Maria
    Stockholm University, Faculty of Humanities, Department of Swedish Language and Multilingualism, Scandinavian Languages.
    Adjektivböjningens -a och -e.: Ett seglivat variationstillstånd.2016In: Språk & Stil, ISSN 1101-1165, Vol. 26, 69-100 p.Article in journal (Refereed)
    Abstract [sv]

    The adjectival agreement of noun phrases referring to human individuals in Swedish is renowned for its complex pattern of variation between -a and -e. This article reports three studies on the subject.The first one maps the use of the marked form -e, and finds it to be mainly used for males and generic individuals, but occasionally also for other animates, such as animals, women, and nonpersonal agents. The variation between -a and -e for males has often been thought of as regionally governed, but the second study, based on blog texts, suggests that region plays a subordinate role(or possibly no role at all) in writing. Many factors have been said to influence the variation, and the third study reported in the article tests their impact with statistical methods on modern data. Theresults indicate that the variation in noun phrases referring to specific male individuals is more influenced by pragmatic and semantic factors, as compared to the variation in noun phrases referring to generic individuals, which is more affected by formal and lexical factors. This difference is interpretedas a consequence of how the referents are conceptualized.The variation between -e and -a is often assumed to reveal an ongoing change. However, when theresults of these studies are compared to a thorough description of the system from 1892, the emerging picture is one of enduring variation, influenced by the very same factors today as over a century ago.

  • Olsson, Jan
    et al.
    Umeå University, Faculty of Medicine, Department of Clinical Microbiology, Virology.
    Olsson, Jan
    Umeå University, Faculty of Medicine, Department of Clinical Microbiology, Virology.
    Lövheim, Hugo
    Umeå University, Faculty of Medicine, Department of Community Medicine and Rehabilitation, Geriatric Medicine.
    Honkala, Emma
    Umeå University, Faculty of Medicine, Department of Clinical Microbiology, Virology.
    Karhunen, Pekka J.
    Elgh, Fredrik
    Umeå University, Faculty of Medicine, Department of Clinical Microbiology, Virology.
    Kok, Eloise H.
    HSV presence in brains of individuals without dementia: the TASTY brain series2016In: Disease Models and Mechanisms, ISSN 1754-8403, E-ISSN 1754-8411, Vol. 9, no 11, 1349-1355 p.Article in journal (Refereed)
    Abstract [en]

    Herpes simplex virus (HSV) type 1 affects a majority of the population and recent evidence suggests involvement in Alzheimer's disease aetiology. We investigated the prevalence of HSV type 1 and 2 in the Tampere Autopsy Study (TASTY) brain samples using PCR and sero-positivity in plasma, and associations with Alzheimer's disease neuropathology. HSV was shown to be present in human brain tissue in 11/584 (1.9%) of samples in the TASTY cohort, of which six had Alzheimer's disease neuropathological amyloid beta (A beta) aggregations. Additionally, serological data revealed 86% of serum samples tested were IgG-positive for HSV. In conclusion, we report epidemiological evidence of the presence of HSV in brain tissue free from encephalitis symptoms in a cohort most closely representing the general population (a minimum prevalence of 1.9%). Whereas 6/11 samples with HSV DNA in the brain tissue had A beta aggregations, most of those with A beta aggregations did not have HSV present in the brain tissue.

  • Ström, Per
    Uppsala University, University Administration.
    Ström, PerUppsala University, University Administration.
    Promotionsfesten i Uppsala den 27 januari 20172017Collection (editor) (Other (popular science, discussion, etc.))
  • Haglund, Axel
    et al.
    Haglund, Axel
    Lindh, Asa U.
    Lysell, Henrik
    Renberg, Ellinor Salander
    Umeå University, Faculty of Medicine, Department of Clinical Sciences.
    Jokinen, Jussi
    Umeå University, Faculty of Medicine, Department of Clinical Sciences. Department of Clinical Neuroscience, Centre for Psychiatry Research, Karolinska Institutet, Stockholm, Sweden.
    Waern, Margda
    Runeson, Bo
    Interpersonal violence and the prediction of short-term risk of repeat suicide attempt2016In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 6, 36892Article in journal (Refereed)
    Abstract [en]

    In this multi-center cohort study, suicide attempters presenting to hospital (N = 355, 63% women) were interviewed using the Karolinska Interpersonal Violence Scale (KIVS) and followed-up by medical record review. Main outcome was non-fatal or fatal repeat suicide attempt within six months. Also, repeat attempt using a violent method was used as an additional outcome in separate analyses. Data were analyzed for the total group and for men and women separately. Repeat attempts were observed within six months in 78 persons (22%) and 21 (6%) of these used a violent method. KIVS total score of 6 or more was associated with repeat suicide attempt within six months (OR = 1.81, CI 1.08-3.02) and predicted new attempts with a sensitivity of 62% and a specificity of 53%. A three-fold increase in odds ratio was observed for repeat attempt using a violent method (OR = 3.40, CI 1.22-9.49). An association between exposure to violence in adulthood and violent reattempt was seen in women (OR = 1.38, CI 1.06-1.82). The overall conclusions are that information about interpersonal violence may help predict short-term risk for repeat suicide attempt, and that structured assessment of interpersonal violence may be of value in risk assessment after attempted suicide.

  • Monteferrante, C. G.
    et al.
    Monteferrante, C. G.
    Jirgensons, A.
    Varik, Vallo
    Umeå University, Faculty of Medicine, Molecular Infection Medicine Sweden (MIMS). Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia.
    Hauryliuk, VVasili
    Umeå University, Faculty of Medicine, Molecular Infection Medicine Sweden (MIMS). Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia.
    Goessens, W. H. F.
    Hays, J. P.
    Evaluation of the characteristics of leucyl-tRNA synthetase (LeuRS) inhibitor AN3365 in combination with different antibiotic classes2016In: European Journal of Clinical Microbiology and Infectious Diseases, ISSN 0934-9723, E-ISSN 1435-4373, Vol. 35, no 11, 1857-1864 p.Article in journal (Refereed)
    Abstract [en]

    Aminoacyl tRNA synthetases are enzymes involved in the key process of coupling an amino acid to its cognate tRNA. AN3365 is a novel antibiotic that specifically targets leucyl-tRNA synthetase, whose development was halted after evaluation in phase II clinical trials owing to the rapid selection of resistance. In an attempt to bring AN3365 back into the developmental pipeline we have evaluated the efficacy of AN3365 in combination with different classes of antibiotic and characterized its mechanism of action. Although we detect no synergy or antagonism in combination with a range of antibiotic classes, a combination of AN3365 with colistin reduces the accumulation of AN3365-resistant and colistin resistance mutations. We also demonstrate that treatment with AN3365 results in the dramatic accumulation of the alarmone (p)ppGpp, the effector of the stringent response-a key player in antibiotic tolerance.

  • Peters, Björn
    et al.
    Swedish National Road and Transport Research Institute, Traffic and road users, Körsimulering och visualisering, SIM.
    Peters, Björn
    Swedish National Road and Transport Research Institute, Traffic and road users, Körsimulering och visualisering, SIM.
    Selander, Helena
    Mobilitetscenter.
    Stave, Christina
    Swedish National Road and Transport Research Institute, Traffic and road users, Förare och fordon, FOF.
    Andersson Hultgren, Jonas
    Swedish National Road and Transport Research Institute, Traffic and road users, Körsimulering och visualisering, SIM.
    Jansson, Andreas
    Swedish National Road and Transport Research Institute, Traffic and road users, Körsimulering och visualisering, SIM.
    Evaluation of driving simulator based training for older drivers in Sweden: Deliverable 2.4.32016Report (Other academic)
    Abstract [en]

    Being able to assess your own performance can be vital to maintain safe mobility for older drivers. Overestimation can lead to increased risk of being involved in a crash and underestimation to unjustifiable restrictions in mobility. A pre/post intervention study was conducted with the aim to improve older drivers’ ability to assess their own driving performance. The aim was not to improve performance per se but the ability to assess, i.e. to calibrate themselves. Thus, a driving simulator program was developed and evaluated with a group of 36 older drivers. However, due to simulator sickness only 21 driver completed the study. Drivers repeatedly assessed their driving performance by answering the question “How well do you think you performed on the driving task? (1 = very bad to 5 = very well)”. As a reference of correctly assessed driving performance we used an experienced occupational therapist (specialised in driver assessment) who assessed the drive with the same scale (expert assessment).

    Feedback can be an effective tool for change, which we wanted to evaluate. Thus, feedback to the drivers were given as a specification of errors made (e.g. forgot to use direction indicators, driving too fast, etc.). Feedback could also include information on correct behaviour (e.g. give way to pedestrians, keeping the right speed etc.). Thus, the drivers were divided into two groups: one (n=11) who were told of their misses and one (n=10) who were also informed about their correct behaviour. Training was done at three different occasions.

  • Zillén, Kavot
    et al.
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Law, Department of Law.
    Zillén, Kavot
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Law, Department of Law.
    Garland, Jameson
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Law, Department of Law.
    Slokenberga, Santa
    Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Law, Department of Law.
    The Rights of Children in Biomedicine: Challenges posed by scientific advances and uncertainties2016Report (Other academic)
    Abstract [en]

    The Committee on Bioethics of the Council of Europe commissioned this study to identify potential areas of heightened concern for the rights of children that may be unfavorably affected by scientific advances and uncertainties in biomedicine. This report is the result of that study. It provides substantive illustrations of the diversity of problems generated by biomedical developments, including the expanded use of certain biomedical procedures, emerging technologies, and innovative therapies. It also addresses uncertain risks to children through the continuation of longstanding biomedical practices that lack sufficient scientific support. Because considerable legal protections have been developed for biomedical research and continue to be debated in great depth, this report focuses more broadly on biomedicine as a whole. The specific concern addressed here is not about the research process and regulation as such, but rather on how scientific advances and risk-laden practices reach children in biomedicine – whether through health care practices or in other biomedical settings. Mapping out the areas of concern for this report required not only identifying the technological advances and scientific challenges at stake but contemplating these challenges first and foremost from the perspective of the rights of children as class – formally collectively defined as persons from birth to age 18, unless they have attained majority status. Because a subsequent report will analyze the potential legal frameworks protecting children from the scientific risks and uncertainties identified here, this report identifies the challenges in protecting children relative to those rights that are commonly described in international human rights discourse, with only summary references to specific legal instruments in the report’s conclusions. The aim of the report is to demonstrate how the scientific risks and uncertainties illustrated here may affect the rights of children from birth through adolescence, in a variety of ways. Chapter 2 surveys differences in childhood development to illustrate why the lack of protection from scientific risks and uncertainty persists, in part because of limited understanding of the developmental differences and vulnerabilities of children at different phases of life. The report then expands on how many interventions may reach children at the earliest stages of their development, such as through assisted reproduction and other interventions in utero (Chapter 3) as well as in the field of genetics (Chapter 4). The report then addresses children who have been subjected to high-risk and controversial clinical practices, many of which lack sufficient scientific support regarding their safety. Among those children at risk are sexual or gender minority children (Chapter 5) and children diagnosed with serious physical and mental health needs (Chapter 6). The next chapters address two areas affecting critically ill children where considerable policy debate has taken place, but without sufficient regard to scientific advances and uncertainties, specifically in transplantation (Chapter 7) and end-of-life decisions (Chapter 8). In the final chapter, the report sets forth numerous rights of children in biomedicine that are currently at stake from scientific advances and uncertainties – not only the right to the highest attainable standard of health but rights protecting their physical and psychological integrity and their privacy and identity, as well as freedom from discrimination. The landscape of these rights is as vast and potentially complex as biomedicine. The report thus concludes that the biomedical controversies surveyed here signal a need for systemic, continuous and multidisciplinary oversight of these issues, as well as for many biomedical interventions that could not be covered here in depth. These matters cannot be left to biomedical expertise alone, but instead require vigilant oversight from human rights authorities and scholars with an understanding of these issues.

  • Habibipour, Abdolrasoul
    et al.
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
    Habibipour, Abdolrasoul
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
    Bergvall-Kåreborn, Birgitta
    Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Computer Science.
    Towards a User Engagement Process Model in Open Innovation2016In: The ISPIM Innovation Summit, Kuala Lumpur, Malaysia on 4-7 December 2016, 2016Conference paper (Refereed)
    Abstract [en]

    Studies on open innovation have increasingly emphasized the role of individual users as collaborators in the innovation processes. Keeping users enthusiastically engaged throughout the information systems development (ISD) process for open innovation approaches is of crucial importance, specifically when the participation is voluntary. Although a few studies exist that have presented process models for user engagement, none of them are specifically based on the voluntary contribution of the users in an open environment, nor included the detailed attributes of the phenomenon of user drop-outs in their presented models. By combining the results of a comprehensive literature review and a qualitative case study of user engagement, this study aims to develop a user engagement process model that includes the variety of reasons for user drop-out, and then to present some practical guidelines that would facilitate prolonged user engagement in the ISD process in an open innovation environment.

  • Karlsson, Terese
    et al.
    Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
    Karlsson, Terese
    Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
    Lundholm, Marie
    Umeå University, Faculty of Medicine, Department of Medical Biosciences, Pathology.
    Widmark, Anders
    Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
    Persson, Emma
    Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
    Tumor Cell-Derived Exosomes from the Prostate Cancer Cell Line TRAMP-C1 Impair Osteoclast Formation and Differentiation2016In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 11, no 11, e0166284Article in journal (Refereed)
    Abstract [en]

    Skeletal metastatic disease is a deleterious consequence of dissemination of tumor cells from numerous primary sites, such as prostate, lung and breast. Skeletal metastases are still incurable, resulting in development of clinical complications and decreased survival for cancer patients with metastatic disease. During the last decade, tumor cell-derived microvesicles have been identified and suggested to be involved in cancer disease progression. Whether cancer exosomes are involved in tumor and bone cell interactions in the metastatic site is still, however, a rather unexplored field. Here we show that exosomes isolated from the murine prostate cancer cell line TRAMP-C1 dramatically decrease fusion and differentiation of monocytic osteoclast precursors to mature, multinucleated osteoclasts. The presence of tumor cell-derived exosomes also clearly decreased the expression of established markers for osteoclast fusion and differentiation, including DC-STAMP, TRAP, cathepsin K, and MMP-9. In contrast, exosomes derived from murine fibroblastic cells did not affect osteoclast formation. Our findings suggest that exosomes released from tumor cells in the tumor-bone interface are involved in pathological regulation of bone cell formation in the metastatic site. This further strengthens the role of tumor cell-derived microvesicles in cancer progression and disease aggressiveness.

  • Allas, Ular
    et al.
    Allas, Ular
    Toom, Lauri
    Selyutina, Anastasia
    Maeorg, Uno
    Medina, Ricardo
    Merits, Andres
    Rinken, Ago
    Hauryliuk, Vasili
    Umeå University, Faculty of Medicine, Department of Molecular Biology (Faculty of Medicine). Umeå University, Faculty of Medicine, Molecular Infection Medicine Sweden (MIMS). University of Tartu, Institute of Technology, Nooruse 1, Tartu 50411, Estonia.
    Kaldalu, Niilo
    Tenson, Tanel
    Antibacterial activity of the nitrovinylfuran G1 (Furvina) and its conversion products2016In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 6, 36844Article in journal (Refereed)
    Abstract [en]

    2-Bromo-5-(2-bromo-2-nitrovinyl) furan (G1 or Furvina) is an antimicrobial with a direct reactivity against thiol groups. It is active against Gram-positive and Gram-negative bacteria, yeasts and filamentous fungi. By reacting with thiol groups it causes direct damage to proteins but, as a result, is very short-living and interconverts into an array of reaction products. Our aim was to characterize thiol reactivity of G1 and its conversion products and establish how much of antimicrobial and cytotoxic effects are due to the primary activity of G1 and how much can be attributed to its reaction products. Stability of G1 in growth media as well as its conversion in the presence of thiols was characterized. The structures of G1 decomposition products were determined using NMR and mass-spectroscopy. Concentration-and time-dependent killing curves showed that G1 is bacteriostatic for Escherichia coli at the concentration of 16 mu g/ml and bactericidal at 32 mu g/ml. However, G1 is inefficient against non-growing E. coli. Addition of cysteine to medium reduces the antimicrobial potency of G1. Nevertheless, the reaction products of G1 and cysteine enabled prolonged antimicrobial action of the drug. Therefore, the activity of 2-bromo-5-(2-bromo-2-nitrovinyl) furan is a sum of its immediate reactivity and the antibacterial effects of the conversion products.

  • Nelson, Eugene C.
    et al.
    Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States.
    Nelson, Eugene C.
    Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States.
    Dixon-Woods, Mary
    Institute of Public Health, University of Cambridge, School of Clinical Medicine, Cambridge, United Kingdom.
    Batalden, Paul B.
    Jönköping University, School of Health and Welfare, The Jönköping Academy for Improvement of Health and Welfare. Jönköping University, School of Health and Welfare, HHJ. IMPROVE (Improvement, innovation, and leadership in health and welfare). Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States.
    Homa, Karen
    Dartmouth-Hitchcock Health, Lebanon, NH, United States.
    Van Citters, Aricca D.
    Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States.
    Morgan, Tamara S.
    Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States.
    Eftimovska, Elena
    Medical Management Centre, Karolinska Institutet, Stockholm, Sweden.
    Fisher, Elliott S.
    Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States.
    Ovretveit, John
    Medical Management Centre, Karolinska Institutet, Stockholm, Sweden.
    Harrison, Wade
    Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States.
    Lind, Cristin
    Quality Register Center Stockholm, Karolinska Institutet, Stockholm County Council, Stockholm, Sweden.
    Lindblad, Staffan
    Medical Management Centre, Karolinska Institutet, Stockholm, Sweden.
    Patient focused registries can improve health, care, and science2016In: BMJ. British Medical Journal (International Ed.), ISSN 0959-8146, E-ISSN 0959-535X, Vol. 354, i3319Article in journal (Refereed)
  • Public defence: 2017-01-26 10:00 V3, Stockholm
    Ghasemifard, Fatemeh
    KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. KTH.
    Ghasemifard, Fatemeh
    KTH, School of Electrical Engineering (EES), Electromagnetic Engineering. KTH.
    Remote contact-free reconstruction of currents in two-dimensional parallel conductors2016Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    In this thesis, the theory of the remote contact-free reconstruction of currents in two-dimensional parallel conductors is investigated. The motivation of this study is finding a complement technique to measurement transformers which are the well-established devices to measure currents in power transmission lines. This technique would provide the possibility of measuring currents at different locations of a power system, as well as, at different frequencies.

     

    Remote contact-free determination of currents is an electromagnetic inverse source problem in which the currents are reconstructed from the magnetic field data collected by a set of sensors located in the vicinity of the conductors. Since the sensors are not too close to the conductors, the main challenge is the effect of the disturbance fields produced by the external sources in the measurement.

     

    In the case that the external sources produce three-dimensional disturbance fields, the magnetic field due to the external sources is expressed as a truncated expansion of the spherical harmonics and both the currents in the conductors and the expansion coefficients are determined by applying the least square method. To overcome the ill-posedness of the problem, the functional to be minimized is augmented by a Tikhonov regularization term that penalizes unphysical solutions introduced by the expansion coefficients.

     

    Finally, the problem of selecting a limited number of optimal sensor positions among a set of predetermined sensor positions is considered. Using the relaxation method, this optimization problem is changed to a convex optimization problem which can be readily solved using the CVX package.

  • Ogrinc, Greg
    et al.
    VA Outcomes Group, White River Junction VA Medical Center, White River Junction, Vermont.
    Ogrinc, Greg
    VA Outcomes Group, White River Junction VA Medical Center, White River Junction, Vermont.
    Davies, Louise
    VA Outcomes Group, White River Junction VA Medical Center, White River Junction, Vermont.
    Goodman, Daisy
    VA Outcomes Group, White River Junction VA Medical Center, White River Junction, Vermont.
    Batalden, Paul B.
    Jönköping University, School of Health and Welfare, The Jönköping Academy for Improvement of Health and Welfare. Jönköping University, School of Health and Welfare, HHJ. IMPROVE (Improvement, innovation, and leadership in health and welfare). Geisel School of Medicine at Dartmouth, Hanover, New Hampshire.
    Davidoff, Frank
    The Dartmouth Institute for Health Policy and Clinical Practice, Hanover, New Hampshire.
    Stevens, David
    The Dartmouth Institute for Health Policy and Clinical Practice, Hanover, New Hampshire.
    Standards for QUality Improvement Reporting Excellence 2.0: revised publication guidelines from a detailed consensus process2016In: Journal of Surgical Research, ISSN 0022-4804, E-ISSN 1095-8673, Vol. 200, no 2, 676-682 p.Article in journal (Refereed)
    Abstract [en]

    Since the publication of Standards for QUality Improvement Reporting Excellence (SQUIRE 1.0) guidelines in 2008, the science of the field has advanced considerably. In this article, we describe the development of SQUIRE 2.0 and its key components. We undertook the revision between 2012 and 2015 using (1) semistructured interviews and focus groups to evaluate SQUIRE 1.0 plus feedback from an international steering group, (2) two face-to-face consensus meetings to develop interim drafts, and (3) pilot testing with authors and a public comment period. SQUIRE 2.0 emphasizes the reporting of three key components of systematic efforts to improve the quality, value, and safety of health care: the use of formal and informal theory in planning, implementing, and evaluating improvement work; the context in which the work is done; and the study of the intervention(s). SQUIRE 2.0 is intended for reporting the range of methods used to improve health care, recognizing that they can be complex and multidimensional. It provides common ground to share these discoveries in the scholarly literature (www.squire-statement.org).

  • Ogrinc, Greg
    et al.
    Geisel School of Medicine at Dartmouth, Hanover, NH, United States.
    Ogrinc, Greg
    Geisel School of Medicine at Dartmouth, Hanover, NH, United States.
    Davies, Louise
    Geisel School of Medicine at Dartmouth, Hanover, NH, United States.
    Goodman, Daisy
    Geisel School of Medicine at Dartmouth, Hanover, NH, United States.
    Batalden, Paul B.
    Jönköping University, School of Health and Welfare, The Jönköping Academy for Improvement of Health and Welfare. Jönköping University, School of Health and Welfare, HHJ. IMPROVE (Improvement, innovation, and leadership in health and welfare). Geisel School of Medicine at Dartmouth, Hanover, New Hampshire, USA.
    Davidoff, Frank
    Dartmouth Institute for Health Policy and Clinical Practice, Hanover, NH, United States.
    Stevens, David
    Dartmouth Institute for Health Policy and Clinical Practice, Hanover, NH, United States.
    SQUIRE 2.0 (Standards for QUality Improvement Reporting Excellence): Revised publication guidelines from a detailed consensus process2016In: BMJ Quality and Safety, ISSN 2044-5415, E-ISSN 2044-5423, Vol. 25, no 12, 986-992 p.Article in journal (Refereed)
    Abstract [en]

    Since the publication of Standards for QUality Improvement Reporting Excellence (SQUIRE 1.0) guidelines in 2008, the science of the field has advanced considerably. In this manuscript, we describe the development of SQUIRE 2.0 and its key components. We undertook the revision between 2012 and 2015 using (1) semistructured interviews and focus groups to evaluate SQUIRE 1.0 plus feedback from an international steering group, (2) two face-to-face consensus meetings to develop interim drafts and (3) pilot testing with authors and a public comment period. SQUIRE 2.0 emphasises the reporting of three key components of systematic efforts to improve the quality, value and safety of healthcare: the use of formal and informal theory in planning, implementing and evaluating improvement work; the context in which the work is done and the study of the intervention(s). SQUIRE 2.0 is intended for reporting the range of methods used to improve healthcare, recognising that they can be complex and multidimensional. It provides common ground to share these discoveries in the scholarly literature (http://www.squire-statement.org). © Published by the BMJ Publishing Group Limited.

  • Semasaka, Jean Paul S.
    et al.
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynaecology. University of Rwanda College of Medicine and Health Sciences School of Public Health, Kigali, Rwanda.
    Semasaka, Jean Paul S.
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynaecology. University of Rwanda College of Medicine and Health Sciences School of Public Health, Kigali, Rwanda.
    Krantz, Gunilla
    Nzayirambaho, Manasse
    Munyanshongore, Cyprien
    Edvardsson, Kristina
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynaecology. Judith Lumley Centre, La Trobe University, Melbourne, Australia.
    Mogren, Ingrid
    Umeå University, Faculty of Medicine, Department of Clinical Sciences, Obstetrics and Gynaecology.
    Self-reported pregnancy-related health problems and self-rated health status in Rwandan women postpartum: a population-based cross-sectional study2016In: BMC Pregnancy and Childbirth, ISSN 1471-2393, E-ISSN 1471-2393, Vol. 16, 340Article in journal (Refereed)
    Abstract [en]

    Background: Self-rated health status (SRH) can be used as a predictor of morbidity and mortality. Postpartum self-rated health has been used to estimate maternal morbidity and postpartum problems. Reproductive history factors are associated with poor self-rated health postpartum. This study investigated prevalence of self-reported health problems during first, second, and third trimesters of pregnancy, delivery, and postpartum. In addition, this study investigated SRH in Rwandan women up to 13 months from partus. Methods: This population-based, cross-sectional study collected data in 2014 using structured interviews (N = 921). Univariable analysis was used to identify variables that were associated with poor self-rated health status (poor-SRH). Logistic regression analyses were performed to identify factors associated with poor-SRH at one day, one week, and one month postpartum and at the time of the interview. Results: Mean time between latest delivery and the time of interview was 7.1 months. Prevalence of anaemia, hypertension, diabetes mellitus during pregnancy, and severe bleeding during pregnancy and labour were 15.0, 4.9, 2.4, and 3.7 %, respectively. The prevalence of poor-SRH was 32.2 % at one day postpartum, 7.8 % at one month, and 11.7 % at time of the interview. Hypertension during pregnancy and significant postpartum haemorrhage were associated with poor-SRH at one day and one week postpartum. Severe bleeding during pregnancy and labour were associated with poor-SRH at one week and one month postpartum. Infection and anaemia during pregnancy were associated with poor-SRH at one month postpartum and at the time of interview. The Kaplan-Meier curves illustrate restitution of health for most women during the study period. Conclusions: This population-based study reports a high prevalence of poor SRH status among Rwandan women in the early postpartum period. Identified factors associated with poor-SRH were severe bleeding, hypertension, infection, and anaemia during pregnancy and postpartum haemorrhage. These factors may be prevented or reduced by providing more frequent and specific attention during pregnancy and by providing timely measures that address complications during delivery, including adequate postpartum care.

  • Noh, H.
    et al.
    Noh, H.
    Alonso, G.
    Nair, Sujith
    Umeå University, Faculty of Social Sciences, Umeå School of Business and Economics (USBE), Business Administration.
    Dahdi, Y.
    Biofuels: their emergence and implications for sustainability in aviation2015In: Energy and Sustainability V: Special Contributions / [ed] H.H Al-Kayiem; Brebbia, Wessex; S.S. Zubir, Ashurst: WIT Press, 2015, 103-111 p.Conference paper (Refereed)
    Abstract [en]

    The global aviation industry is facing complex and unpredictable market conditions with fluctuating oil prices and the adverse environmental impact of aircraft operations. Since the regulatory approval for biofuels, the first biojet fuel flight test in 2007, using a blend fuel, was a remarkable step towards having more test and schedule flights up to the year of 2014. The purpose of this paper is to engage this new alternative energy with the issues that airlines associate with sustainability, mainly focusing on aircraft operations and profitability. The key findings suggest that the uses of alternative energy need to be in parallel to the reliability and maintainability of the aircraft system, so that the adoption of biofuels can be effective.

  • Åhman, Henrik
    KTH, School of Computer Science and Communication (CSC), Media Technology and Interaction Design, MID.
    Åhman, Henrik
    KTH, School of Computer Science and Communication (CSC), Media Technology and Interaction Design, MID.
    The aesthetic turn: Exploring the religious dimensions of digital technology2016In: Approaching Religion, ISSN 1799-3121, E-ISSN 1799-3121, Vol. 6, no 2, 156-163 p.Article in journal (Refereed)
    Abstract [en]

    The arena for developing digital technology has undergone an aesthetic turn, broadening the focus from a functionalist approach producing centralized systems in the 1970s and 1980s to an increased awareness of the aesthetic aspects of the individual user’s interaction with technology in the 1990s and 2000s. Within the academic research fields studying digital technology (e.g. Human-Computer Interaction and Interaction Design) the aesthetic turn has resulted in a shift from a strong emphasis on user behaviour to an increased interest in aesthetic perspectives on the role of the designer, the design process, and the design material. Within these fields, aesthetics has often been interpreted as belonging to the realm of the individual; personal experiences such as pleasure, engagement, and emotions have been emphasized in both technology development and technology research. Aesthetics is not, however, only an individual phenomenon but also has relational and structural components that need to be acknowledged. Structural aspects of aesthetics condition the possibilities for individuals interacting with digital technology. Thus, the tension between individual and relational aspects of aesthetics in digital technology also reflects a tension between freedom and limitation; between change and permanence; between destabilizing and stabilizing forces. Such a broadened understanding of aesthetics offers a model of digital technology that roughly corresponds to Mark C. Taylor’s definition of religion. Taylor argues that religion is constituted by, on the one hand, a figuring moment characterized by structural stability and universality, and, on the other hand, a disfiguring moment characterized by disruption, particularity, and change. The purpose of this paper is to discuss the aesthetic turn and Taylor’s definition of religion to illustrate similarities between the two, suggesting possible religious dimensions of digital technology and how that can inform our understanding of people’s interaction with digital technology.

  • Batalden, Maren
    et al.
    Department of Medicine, Cambridge Health Alliance, Cambridge, MA, United States.
    Batalden, Maren
    Department of Medicine, Cambridge Health Alliance, Cambridge, MA, United States.
    Batalden, Paul B.
    Jönköping University, School of Health and Welfare, The Jönköping Academy for Improvement of Health and Welfare. Jönköping University, School of Health and Welfare, HHJ. IMPROVE (Improvement, innovation, and leadership in health and welfare). Dartmouth Institute for Health Policy and Clinical Practice, Dartmouth, Lebanon, NH, United States.
    Margolis, Peter
    Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.
    Seid, Michael
    Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.
    Armstrong, Gail
    College of Nursing, University of Colorado, Aurora, CO, United States.
    Opipari-Arrigan, Lisa
    Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States.
    Hartung, Hans
    Department of Pulmonary Medicine, University Hospital Crosshouse, Kilmarnock, East Ayrshire, United Kingdom.
    Coproduction of healthcare service2016In: BMJ Quality and Safety, ISSN 2044-5415, E-ISSN 2044-5423, Vol. 25, no 7, 509-517 p.Article in journal (Refereed)
    Abstract [en]

    Efforts to ensure effective participation of patients in healthcare are called by many names - patient centredness, patient engagement, patient experience. Improvement initiatives in this domain often resemble the efforts of manufacturers to engage consumers in designing and marketing products. Services, however, are fundamentally different than products; unlike goods, services are always 'coproduced'. Failure to recognise this unique character of a service and its implications may limit our success in partnering with patients to improve health care. We trace a partial history of the coproduction concept, present a model of healthcare service coproduction and explore its application as a design principle in three healthcare service delivery innovations. We use the principle to examine the roles, relationships and aims of this interdependent work. We explore the principle's implications and challenges for health professional development, for service delivery system design and for understanding and measuring benefit in healthcare services.

  • Public defence: 2017-02-02 10:00 KTH - room B2, Stockholm
    Samuelsson, Peter
    KTH.
    Samuelsson, Peter
    KTH.
    Management of technology in the process industries:  Matching market and machine2017Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The process industries span multiple industrial sectors and constitute a substantial part of the entire manufacturing industry. Since companies belonging to this family of industries are often very asset intensive, their ability to respond to changes is often limited in the short term.

    The adaptation of the capabilities of existing processes, and conversely finding products and market segments to match the production system capabilities, are an important part of product- and market development activities in the process industry. The importance to companies in the process industry of having a well-articulated manufacturing strategy congruent with the business strategy is second to none. However, to facilitate manufacturing strategy developments, it is essential to start with an improved characterization and understanding of the material transformation system.

    To that end an extensive set of variables was developed and related measures and scales were defined. The resulting configuration model, focusing on company generic process capabilities in the process industries, is to be regarded as a conceptual taxonomy and as a proposition available for further testing. The usability of the model was subsequently assessed using “mini-cases” in the forestry industry, where the respondents confirmed that the company’s overall strategy could benefit from this kind of platform as a possible avenue to follow.

    The model was deployed as an instrument in the profiling of company material transformation systems to facilitate the further development of companies' functional and business strategies. The use of company-generic production capabilities was studied in three case companies representing the mineral, food and steel industries. The model was found by the respondents to be usable as a knowledge platform to develop production strategies. In the final analysis of the research results, a new concept emerged called “production capability configuration":

    A process-industrial company’s alignment of its generic production capabilities in the areas of raw materials, process technology and products to improve the consistency among the variable elements that define operations and improve the congruence between operations and its environment.

    From the perspective of value creation and capture, firms must be able to manufacture products in a competitive cost structure within the framework of a proper business model. By using the configuration model, the relationship between manufacturing and innovation activities has been studied in the previously mentioned three case studies.

    In many cases the gap in capability appears as a limitation in the production system, requiring development efforts and sometimes investments to overcome. This is illustrated with two examples from the steel industry, where development efforts of the production system capabilities are initiated to better match the market demands. One example is the increase the volume- and product flexibility of an existing stainless steel melt shop, resulting in a proposed oblong Argon Oxygen Decarburisation (AOD) converter configuration that was subsequently verified using water modelling. The second example is from a carbon steel mill, where the target was to increase the raw material- and volume flexibility of another melt shop, by modifying the capabilities of the Electric Arc Furnace (EAF). Enabling EAF technologies are further described and evaluated using operational data and engineering type of estimates. 

  • Ronquist, Fredrik
    et al.
    Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
    Ronquist, Fredrik
    Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
    Skyttner, Markus
    Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
    Kõljalg, Urmas
    Röppert, Dominik
    Penev, Lyubomir
    Stoev, Pavel
    Peer, Israel
    Stein, Martin
    Calabuig, Isabel
    Agosti, Donat
    Kempa, Matus
    EU-BON Deliverable 1.3. Systems for mobilizing and managing collection-based data (specimen + DNA-data) fully integrated2016Report (Other academic)
    Abstract [en]

    Introduction. A large portion of the biodiversity data in natural history collections is still not available digitally. Increasingly, innovative high-throughput methods are being applied to digitize this backlog in bulk, generating large amounts of data. In parallel, natural history museums are becoming increasingly involved in the generation of large amounts of molecular biodiversity data using new massively parallel sequencing platforms. Against this backdrop, the goal of EU BON Task 1.4 has been to support data mobilization efforts targeting collection-based and molecular data, mainly through the development and integration of innovative open-source tools and services.

    Progress towards objectives. The activities have involved work within the context of three major projects: i) DINA, an open-source, modular, web-based collection management system for natural history specimen data. ii) JACQ an open-access system for botanical (herbarium) data. iii) PlutoF, a web platform for working with traditional and molecular biodiversity research data. The task has also involved work on a number of other EU BON partner systems and services, as well as integration across internal EU BON and external biodiversity informatics resources. Finally, these systems have been used for targeted data mobilization efforts.

    Achievements and current status. Within DINA, the focus has been on supporting the engineering of sophisticated biodiversity information systems through the exploration of tools supporting distributed development and a modular plug-and-play design based on services-oriented architectures. This has involved the testing and adoption of tools like Apiary for the design of Application Programming Interfaces (APIs) and Docker for systems integration and deployment tasks. A Python library for data migration to DINA was also developed and tested. Within JACQ, a number of tools were developed to facilitate deployment and data migration to the system, and the AnnoSys tool for annotation of data has been integrated. Within PlutoF, EU BON efforts focused on the development of a citizen-science module and improved functionality for the mobilization of collection (living) specimen data. A number of innovative tools were developed by Pensoft to help mobilize biodiversity data published in the scientific literature, including semantic mark-up of species conservation papers, direct import of data from a range of biodiversity platforms into manuscripts, and a mechanism for providing stable links from publications to global biodiversity repositories. Plazi implemented an automated workflow mining published scientific papers for taxonomic data, currently mobilizing 25 % of all published new names as they become available. GlueCad developed apps allowing citizen scientists reporting spontaneous observations or systematic inventory data to select target taxa and preferred data mobilization platform. IBSAS and UCPH have focused on national data mobilization efforts targeting Slovakia and Denmark, respectively.

    Future developments. Although the development is clearly towards increased integration of biodiversity informatics tools into larger and more sophisticated systems, it is clear that there is no one size that fits all. Nevertheless, the increasingly widespread adoption of community standards, open-source development practises and service-oriented architectures are pushing the capability of current systems forward and facilitating tighter integration across systems. This trend is supported by the appearance of sophisticated tools enabling the design and deployment of complex modular systems. The adoption of the Docker approach is one example of how the biodiversity informatics community may benefit from this.

  • Palmén, Rachel
    et al.
    Open University of Catalonia, Spain.
    Palmén, Rachel
    Open University of Catalonia, Spain.
    Hearn, Jeff
    Örebro University, School of Humanities, Education and Social Sciences, Örebro University, Sweden.
    Husu, Liisa
    Örebro University, School of Humanities, Education and Social Sciences, Örebro University, Sweden.
    Historical Perspectives and Future Scenarios2016Report (Other academic)
  • Hearn, Jeff
    Örebro University, School of Humanities, Education and Social Sciences, Örebro University, Sweden.
    Hearn, Jeff
    Örebro University, School of Humanities, Education and Social Sciences, Örebro University, Sweden.
    From Masculinity to Masculinities and Back to Men … and Fame too …2016In: Discover Society, Vol. 30Article in journal (Other academic)
  • Hambäck, Peter A.
    et al.
    Hambäck, Peter A.
    Weingartner, Elisabeth
    Dalén, Love
    Swedish Museum of Natural History, Department of Bioinformatics and Genetics.
    Wirta, Helena
    Roslin, Tomas
    Spatial subsidies in spider diets vary with shoreline structure: Complementary evidence from molecular diet analysis and stable isotopes2016In: Ecology and Evolution, ISSN 2045-7758, E-ISSN 2045-7758, Vol. 6, no 23, 8431-8439 p.Article in journal (Refereed)
  • Cederlöf, Gunnel
    Linnaeus University, Faculty of Arts and Humanities, Department of Cultural Sciences.
    Cederlöf, Gunnel
    Linnaeus University, Faculty of Arts and Humanities, Department of Cultural Sciences.
    Rule against Nature: Founding an Empire on India’s North-Eastern Frontier2013Book (Refereed)