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  • 1199801.
    Östlund, Stefan
    et al.
    KTH, Tidigare Institutioner, Elektrotekniska system.
    Leander, Per
    ABB Traction AB.
    A Concept for a High-Voltage DC Traction System1989Konferensbidrag (Refereegranskat)
  • 1199802.
    Östlund, Stefan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Elektriska maskiner och effektelektronik (stängd 20110930).
    Lilliesköld, Joakim
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Assessing project courses with several teachers involved2007Ingår i: Proceedings of the 3rd annual CDIO conference, 2007Konferensbidrag (Refereegranskat)
  • 1199803.
    Östlund, Stefan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Elektriska maskiner och effektelektronik (stängd 20110930).
    Lilliesköld, Joakim
    KTH, Skolan för elektro- och systemteknik (EES), Industriella informations- och styrsystem.
    Designing, implementing and maintaining a first year project course in Electrical engineering2008Ingår i: European Journal of Engineering Education, ISSN 0304-3797, E-ISSN 1469-5898, Vol. 33, nr 2, s. 231-242Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Being a modern electrical engineer does not only require state of the art skills in areas such as transfer and processing of information, electronics, systems engineering, and biomedical electrical engineering; it also requires generic engineering skills such as oral and written communication, team building, interpersonal skills, and the ability to take the responsibility of solving assigned tasks. In the development of a new electrical engineering curriculum, it was considered a challenge to introduce these generic engineering skills in a more applicable way. The approach described in this paper has been very successful in implementing and maintaining a challenging first year project based engineering course with a high level of training of generic engineering skills.

  • 1199804.
    Östlund, Stefan
    et al.
    KTH, Skolan för elektro- och systemteknik (EES), Elektriska maskiner och effektelektronik (stängd 20110930).
    Skoglund, Mattias
    TFK.
    Bark, Peter
    TFK.
    Experiences from the Swedish T43H Hybrid Locomotive2008Konferensbidrag (Övrigt vetenskapligt)
  • 1199805.
    Östlund, Stina
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Fysikundervisningens didaktik.
    Algodoo som ett verktyg vid undervisning av kinetisk gasteori2018Självständigt arbete på avancerad nivå (yrkesexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Simuleringar har visat sig vara ett användbart hjälpmedel inom fysikundervisningen, främst inom områden som är svåra att observera. Eftersom kinetisk gasteori är ett sådant område har det i den här uppsatsen undersökts hur användbart programmet Algodoo är för att simulera termodynamiska processer och på så sätt studera vad som sker i en gas. Det visade sig att isobara, isokora och adiabatiska processer är meningsfulla att simulera i Algodoo, där det tydligt går att visualisera hur bland annat partiklarnas kinetiska energi, volymen av behållaren och trycket förändras i dessa processer, medan en isoterm process var något begränsad i utförandet.

    När simuleringar av gaser genomförs i Algodoo uppstår en svängningsrörelse och systemet visar sig motsvara en Helmholtz resonator. Ekvationen för Helmholtz resonansfrekvens, som utgår från ideala gaser i tre dimensioner, skrivs om för att passa det tvådimensionella Algodoo, för att sedan användas till att undersöka hur de olika parametrarna i ekvationen påverkar systemet. Även den ideala gaslagen skrivs om för att passa ett tvådimensionellt system och beräkningar utförs även här för att undersöka hur väl värden i Algodoo stämmer överens med teoretisk beräknade värden. Den största felkällan vid beräkningar med värden från Algodoo visar sig vara det faktum att gaser som simuleras i programmet inte är helt ideala med avseende på att partiklarna inte är punktpartiklar utan upptar en viss volym.

  • 1199806.
    Östlund, Stina
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Institutionen för fysik och astronomi, Högenergifysik.
    Kvarkar: upptäckt och återupptäckt2017Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    I fysikkurserna på gymnasiet ingår endast en liten del av partikelfysiken, trots att det är ett område som är väldigt aktuell inom forskning. I Fysik 1 och 2 ingår en översiktlig orientering om standardmodellen och de partiklar och interaktioner som ingår i modellen. Genom att utforma en laboration där eleverna får använda sig av data från ATLAS-experimentet på CERN får de både möjligheten att lära sig mer om partikelfysik och prova att arbeta på ett sätt som liknar forskarnas arbetssätt. Inspiration till arbetet har hämtats från projektet Hands-on-CERN som inriktar sig på att öka gymnasieelevers intresse och kunskaper inom partikelfysik. Genom att efterlikna Hands-on-CERNs sätt att arbeta har en laboration lämplig för gymnasieelever utformats. I laborationen får eleverna möjlighet att upptäcka att kvarkar finns trots att de inte går att observera i fria tillstånd, utan endast i bundna tillstånd; så kallade hadroner.

    Data från Z-bosonens sönderfall hämtas från ATLAS-experimentet i CERN analyseras, från vilken man kan dra slutsatsen att Z-bosonen sönderfaller oftare till hadroner än till leptoner, ett förhållande på ungefär 14:71. Förhållandet beror på att det finns fler möjliga hadroner som Z- bosonen kan sönderfalla till, vilket i sin tur beror på hadronernas inre struktur bestående av kvarkar, till skillnad från leptonerna som saknar inre struktur. 

  • 1199807.
    Östlund, Sören
    KTH, Tidigare Institutioner, Hållfasthetslära.
    Fracture modelling of brittle-matrix composites with spatially dependent crack bridging1995Ingår i: Fatigue & Fracture of Engineering Materials & Structures, ISSN 8756-758X, E-ISSN 1460-2695, Vol. 18, nr 10, s. 1213-1230Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In brittle-matrix composites cracking of the matrix is often accompanied by bridging of the crack surfaces. The bridging will reduce the net stress intensity factor at the crack tip and consequently increase the toughness of the composite material. The bridging mechanism is due to for example unbroken whiskers, fibres, ductile particles or interlocking grains.

    Analysis of the bridging mechanism in cracked structures is conveniently carried out using the concept of cohesive zone modelling. In this case the action of the bridging elements is replaced by a distribution of forces, so called cohesive forces trying to close the crack. The commonly used approach in such modelling has been to replace the action from individual bridging elements by a continuous spatially independent distribution of closing tractions whose magnitude is a function of the crack opening displacement only.

    In this paper the influence of the spatial distribution of bridging elements is considered for plane crack problems. The cross section of the bridging elements is assumed to be circular and the distance between the different bridging elements is determined by the volume fraction, the radius and the geometrical distribution of the bridging elements.

    Damage resistance curves have been calculated for typical whiskers-reinforced ceramic composites, and the results from the present spatially dependent models are compared with results from calculations with spatially independent models. The influence of the radius of the bridging element, the volume fraction of whiskers and the material properties are illustrated and the use of spatially independent models is discussed.

  • 1199808.
    Östlund, Sören
    KTH, Tidigare Institutioner, Hållfasthetslära.
    Large scale yielding for dynamic crack growth in a strip geometry1991Ingår i: International Journal of Fracture, ISSN 0376-9429, E-ISSN 1573-2673, Vol. 49, nr 3, s. 219-237Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Dynamic crack growth in a strip geometry has been studied by a convective formulation of the finite element method. The strip is assumed to be made of a material described by an elastic-viscoplastic constitutive equation and the loading conditions are plane strain mode I. The plastic strain-rates are characterized by a power-law overstress model giving an asymptotic elastic singularity at the crack tip. Two different types of loading on the strip geometry have been investigated. In the first geometry the horizontal boundaries parallel to the crack plane were subjected to prescribed displacements perpendicular to the crack plane and the crack tip was loaded in essentially the same way as for a crack in a plate subjected to tensile loading perpendicular to the crack. The second type of loading consisted of a prescribed rotation of the trailing edge in the moving finite element mesh. This created primarily bending loading of the structure.The crack tip energy flow has been calculated for different levels of yielding around the crack tip. The results are compared to the true small scale yielding solution obtained from a boundary layer analysis.The results reported indicate that for the tensile loading there exists a rather wide range of load levels for which the boundary layer solution gives a good description of the fields around the crack tip. For the bending loading the results indicate that the boundary layer solution is a correct description only in cases of extremely small scale yielding. Comparisons between large scale yielding and the boundary layer solution are also made for the effective stress and the effective plastic strain.

  • 1199809.
    Östlund, Sören
    KTH, Tidigare Institutioner, Hållfasthetslära.
    On numerical modeling and fracture criteria of dynamic elastic-viscoplastic crack growth1990Ingår i: International Journal of Fracture, ISSN 0376-9429, E-ISSN 1573-2673, Vol. 44, nr 4, s. 283-299Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Dynamic steady-state small-scale yielding crack propagation in an elastic-viscoplastic structure is studied by a convective formulation of the finite element method. The loading condition is mode I plane strain.The plastic strain-rates are characterized by a power-law overstress model based on a general theory by Perzyna. For values of the stress exponent less than 3, the elastic strain-rates are more singular than the plastic strain-rates and consequently the near tip fields will exhibit an asymptotic elastic behaviour. The size of the zone where this elastic singularity dominates is typically of the order 10–3–10–5 of the size of the active plastic zone. These relatively small dimensions severely complicate the finite element modeling. Although the energy flow is calculated with a path-independent integral of J-integral type, its value will be dependent on the size of the near-tip elements unless extremely small finite elements are used. This is an important difference compared with many other situations, for example the elastic case and a stationary crack in a power-law hardening material, where the use of a path-independent integral improves the numerical accuracy even if the crack tip region is modeled with a rather coarse mesh. This size effect is discussed in detail. An application of the results with numerical data for a realistic situation shows that the crack tip energy flow might be vanishingly small compared to the energy dissipation in the plastic region. This indicates that the energy flow to the crack tip is perhaps not an appropriate parameter for the description of small-scale yielding crack growth in the present type of material model.The paper also contains an investigation of the introduction of a variable order singular element at the element positions adjacent to the crack tip. It is shown that this type of element does not improve the numerical behaviour in the present formulation.

  • 1199810.
    Östlund, Sören
    KTH, Skolan för teknikvetenskap (SCI), Hållfasthetslära (Inst.). KTH, Skolan för teknikvetenskap (SCI), Centra, VinnExcellens Centrum BiMaC Innovation.
    Three-Dimensional Deformation and Damage Mechanisms in Forming of Advanced Structures in Paper2017Ingår i: ADVANCES INPULP AND PAPERRESEARCH,OXFORD 2017: Transactions of the 16th Fundamental Research Symposium, Pembroke College, Oxford, England, September 2017 / [ed] Warren Batchelor and Daniel Söderberg, 2017, Vol. 2, s. 489-594Konferensbidrag (Refereegranskat)
    Abstract [en]

    There is a large potential for wood-fibre based materials such as paper and board to contribute to lightweight structures in several applications, particularly packaging.  Fibre-based packaging materials have important advantages in comparison to fossil-based plastics regarding biodegradability, recyclability and renewability.  Individualisation has become a crucial criterion for the use of packaging solutions and forming of advanced paperboard structures is a key technology for manufacturing of such packaging shapes.  New sustainable packaging concepts are creating a need for paper materials with considerably enhanced properties.

    Paper and board are in processes for manufacturing of geometrically advances structures in general subjected to complex and often little known multi-axial states of loading and deformation that are not necessarily quantified by conventional measures for paper performance.  Today, commercial paperboard is optimised for folding and printing, and not for applications involving forming of advanced structures. It is likewise important to design the manufacturing processes to meet the particular properties of paperboard.  Manufacturing methods that are suitable for metals and plastics are inevitably not suitable for paper and board since the deformation and damage mechanisms of fibre network materials are different from metals and plastics.

    In this paper recent findings in the literature on 3D forming of paper and paperboard structures are reviewed.  In particular, deformation and damage mechanisms involved in pertinent forming operations and how they are related to paper and board properties in order to enhance the development of new advanced paper materials and structures are analysed.

    In the last decade, there have been major advancements in the development of geometrically advanced 3D paperboard structures including technological advances of various forming processes, enriched understanding of the importance and influence of process parameters, and new paperboard materials with significantly improved forming properties.  However, there is still a lack of knowledge regarding the deformation mechanisms of these complex systems, and particularly regarding the influence of friction.  One remedy would be the enhancement of numerical simulation tools.  Optimisation of existing forming processes and development of new ones as well as tailored paper and board materials with properties customised to the demands of existing and new 3D forming processes will also play important roles.  This development is only in its beginning and major progress is expected in the near future.

  • 1199811.
    Östlund, Sören
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Hållfasthetslära (Inst.).
    Blom, Karin
    KTH, Skolan för teknikvetenskap (SCI).
    Hjorth, P.-O.
    SAM Samarbetande konsulter AB.
    Ahlstrand, Jonas
    SAM Samarbetande konsulter AB.
    Continuous improvement of a CDIO program using management by means2007Ingår i: Proceedings of the 3rd International CDIO Conference, 2007Konferensbidrag (Refereegranskat)
    Abstract [en]

    The Vehicle Engineering program at KTH was one of the first programs that adopted the CDIO-model for engineering education. The implemented changes were during the first three years subjected to a number of internal and external evaluations, with very positive judgments. Perhaps, the most important task for the program management after such a major overhaul of a program is to motivate faculty for continuous improvement work. Faculty have put a lot of effort into the change process, and they are in general not easily susceptible to further demands from the program management. Thus, there was an appropriate opportunity to try a new management philosophy.

    This paper describes how the management by means concept is introduced in the continuous improvement work of the Vehicle Engineering program. This concept, which is in contrast with traditional management by results concepts, has been used successfully in industrial engineering development work. The main feature of the management by means concept is that the development work is driven not by explicit preconceived targets, but by common values and principles.

    The paper presents the development of common values and principles for the Vehicle engineering program, and the implementation of them in the practical work, carried out in a change group covering all first year courses. Benefits and difficulties are described and the experiences gained so far are discussed, particularly, the dual loyalties of faculty that arise in the educational system at KTH where a program, in general, is not owned by a department.

  • 1199812.
    Östlund, Sören
    et al.
    KTH, Tidigare Institutioner                               , Hållfasthetslära.
    Gudmundson, Peter
    KTH, Tidigare Institutioner                               , Hållfasthetslära.
    Asymptotic crack tip fields for dynamic fracture of linear strain-hardening solids1988Ingår i: International Journal of Solids and Structures, ISSN 0020-7683, E-ISSN 1879-2146, Vol. 24, nr 11, s. 1141-1158Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Asymptotic crack tip fields, for dynamic crack propagation in an elastic-plastic material, have been calculated. The material is characterized by J2flow theory with linear-strain hardening. The possibility of plastic reloading on the crack flank is taken into account. Numerical results for the strength of the crack tip singularity, the angular positions of elastic unloading and possible plastic reloading regions, and the angular variation of the stress and velocity fields, are presented as functions of the crack tip speed and the ratio between tangent modulus and elastic modulus. Calculations have been performed for crack tip speeds below a certain limit velocity which depends on the tangent modulus and the loading conditions. The different loading modes which have been studied are modes I and II (plane strain and plane stress) and mode III (antiplane strain).

  • 1199813.
    Östlund, Sören
    et al.
    Swedish Institute of Composites.
    Gudmundson, Peter
    Swedish Institute of Composites.
    Numerical-Analysis Of Matrix-Crack-Induced Delaminations In [+/-55-Degrees] Gfrp Laminates.1992Ingår i: COMPOSITES ENGINEERING 2, ISSN 0961-9526, Vol. 2, nr 3, s. 161-175Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this paper a three-dimensional glass epoxy angle-ply laminate of the type [+/- 55-degrees] containing matrix cracks and two types of matrix-crack-induced interlaminar local delaminations has been numerically analyzed by the finite element method. Due to periodicity and symmetry only a representative volume element in the form of a parallelepiped bounded by neighbouring matrix cracks needs to be modelled. The additional contributions to the reduction of stiffness coefficients due to local delaminations are compared to the stiffness of undamaged laminates and laminates containing only matrix cracks. Furthermore, the growth of delaminations and progressive matrix cracking are investigated by calculations of their respective total energy release rates as functions of the delamination size and matrix crack density. Implications of the influence of matrix-crack-induced delaminations on the mechanical behaviour of the composite laminate are discussed.

  • 1199814.
    Östlund, Sören
    et al.
    KTH, Tidigare Institutioner                               , Hållfasthetslära.
    Gudmundson, Peter
    KTH, Tidigare Institutioner                               , Hållfasthetslära.
    The Application Of Moving Finite-Elements For The Study Of Crack-Propagation In Linear Elastic Solids.1987Ingår i: Computers & structures, ISSN 0045-7949, E-ISSN 1879-2243, Vol. 25, nr 5, s. 765-774Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Mode I crack propagation in linear elastic solids is studied by a convecting finite element mesh. The finite element formulation is briefly described. Two different approaches for the determination of the stress intensity factor K1 have been investigated, one using the COD relation to K1 and one using the dynamic G-integral. Different test problems, including stationary cracks, steady-state crack propagation and transient crack propagation, have been thoroughly examined.

  • 1199815.
    Östlund, Sören
    et al.
    KTH, Tidigare Institutioner                               , Hållfasthetslära.
    Karenlampi, P.
    Structural geometry effect on the size-scaling of strength2001Ingår i: International Journal of Fracture, ISSN 0376-9429, E-ISSN 1573-2673, Vol. 109, nr 2, s. 141-151Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The sensitivity of the empirical exponent of Bazant's size-effect scaling law on structural geometry is clarified through numerical experiments. For large centre- cracked tension panels, made of a linearly softening material, the best-fitting exponent is 0.90, whereas for large edge-cracked panels it is 0.75. For edge-cracked panels, the value of the exponent increases as a function of increasing crack-length-to-width-ratio. The results indicate that with structures of brittleness numbers below unity, reliable predictions of strength require the size-effect scaling law to be fitted for any particular structural geometry.

  • 1199816.
    Östlund, Sören
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Hållfasthetslära (Inst.). KTH, Skolan för teknikvetenskap (SCI), Centra, VinnExcellens Centrum BiMaC Innovation.
    Linvill, Eric
    KTH, Skolan för teknikvetenskap (SCI), Hållfasthetslära (Inst.).
    Wallmeier, M
    Continuum Modeling of Wrinkles and Explicit FEM Modeling of Paperboard Deep-Drawing2016Ingår i: 2016 Progress in Paper Physics Seminars / [ed] Samuel Schabel, 2016Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Deep drawing of paperboard requires the creation of wrinkles for successful forming of a paperboard cup. A phenomenological model for the mechanical response of wrinkles is proposed and based on the assumption that the wrinkles have a mechanical response equivalent to that of a plastic hinge (i.e. the internal moment in the hinge is held constant during deformation). This 1-D model has been verified with two experiments.

                Furthermore, this phenomenological model has been expanded into a 3-D continuum constitutive model, which considers the initiation and propagation of wrinkles, large deformations due to wrinkle formation and wrinkle compression, and permanent deformations. This 3-D continuum model has been compared to and verified against experimental deep-drawing results. Experiments and simulations have been compared in terms of springback, wrinkle propagation, and punch force. Additionally, the model provided insight into the deep-drawing process by establishing better understanding of the initiation of wrinkling.

  • 1199817.
    Östlund, Sören
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Hållfasthetslära (Inst.).
    Mäkelä, Petri
    Tetra Pak Packaging Solutions AB.
    Fracture properties2011Ingår i: Mechanics of Paper Products / [ed] Kaarlo Niskanen, Berlin: Walter de Gruyter GmbH & Co. KG , 2011, 1, s. 67-89Kapitel i bok, del av antologi (Refereegranskat)
  • 1199818.
    Östlund, Sören
    et al.
    KTH, Tidigare Institutioner, Hållfasthetslära.
    Nilsson, Fred
    KTH, Tidigare Institutioner, Hållfasthetslära.
    Cohesive modelling of process regions for cracks in linear elastic structures-fundamental aspects1993Ingår i: Fatigue & Fracture of Engineering Materials & Structures, ISSN 8756-758X, E-ISSN 1460-2695, Vol. 16, nr 2, s. 215-235Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The process region at the tip of a crack in a linear elastic structure has been modelled by a cohesive zone. Growth of the front end of the cohesive zone is governed by a critical stress intensity factor criterion, and advance of the original traction free crack is determined by a critical crack opening at the rear end of the cohesive zone.

    Damage resistance curves relating the applied stress intensity factor to the growth of the cohesive zone have been calculated for an idealized structure containing two characteristic dimensions. Instability resulting in failure of the structure is found to occur either by unstable growth of the front end of the cohesive zone, without a fully developed cohesive zone, or by unstable growth of the original flaw, when the crack opening displacement at the rear end of the cohesive zone reaches a critical value.

    The influence of the size of the structure compared to the length of the cohesive zone is investigated, and conditions for the limits of validity of the small scale yielding assumption are discussed. Comparisons are made between the maximum load and the length of the cohesive zone at instability resulting from the present analysis, and the values predicted by linear elastic fracture mechanics.

  • 1199819.
    Östlund, Sören
    et al.
    KTH, Tidigare Institutioner, Hållfasthetslära.
    Nilsson, Fred
    KTH, Tidigare Institutioner, Hållfasthetslära.
    Cohesive zone modelling of damage at the tip of cracks in slender beam structures1993Ingår i: Fatigue & Fracture of Engineering Materials & Structures, ISSN 8756-758X, E-ISSN 1460-2695, Vol. 16, nr 6, s. 663-676Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The use of simple beam theory for cohesive zone modelling of the damage response at the crack tip in linear elastic isotropic double cantilever beam (DCB) specimens has been investigated. Damage resistance curves (DR-curves) relating the applied stress intensity factor to the growth of the cohesive zones for beam theory modelling has been compared with two-dimensional elasticity calculations for different material parameters and specimen dimensions. A substantial difference is observed between DR-curves for the two types of models. As expected this difference vanishes for decreasing beam heights. For large beam heights the DR-curves calculated by two-dimensional elasticity are approaching small-scale yielding DR-curves, i.e. DR-curves for an edge crack in an infinite plate. The beam height for which beam theory is applicable could be up to 10-3 times the height for which small scale bridging DR-curves are applicable.

  • 1199820.
    Östlund, Sören
    et al.
    KTH, Tidigare Institutioner, Hållfasthetslära.
    Niskanen, Kaarlo
    KCL.
    Kärenlampi, Petri
    University of Helsinki.
    On the prediction of the strength of paper structures with a flaw1999Ingår i: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 25, nr 10, s. 356-360Artikel i tidskrift (Refereegranskat)
  • 1199821.
    Östlund, Sören
    et al.
    KTH, Skolan för teknikvetenskap (SCI), Hållfasthetslära (Inst.). KTH, Skolan för teknikvetenskap (SCI), Centra, VinnExcellens Centrum BiMaC Innovation.
    Nygårds, Mikael
    KTH, Skolan för teknikvetenskap (SCI), Hållfasthetslära (Inst.).
    Through-thickness mechanical testing and computational modelling of paper and board for efficient materials design2009Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    The objective of most methods for mechanical testing of paper and paperboard is production control, i.e. to secure that the performance of the produced material fulfils certain minimum end‐use requirements. There is in the industry an ever increasing demand for improved efficiency in paper and board converting and end‐use, and this demand paves the way for the development of new test methods that enables a better understanding of the material design. There is a need for better control of changes in the pulping and papermaking processes at different structural levels, and for efficient characterization of these changes. To achieve such control, novel test methods and computational modelling are required.

    The objective of this paper is to discuss some newly proposed test methods and to illustrate how these in combination with simulations are a valuable tool for efficient materials design. The mechanical properties that are covered in the paper include in‐plane residual stresses and transverse shear properties of paper and paperboard. The methods will be shortly described and some important experimental results will be presented. Finally, some examples of computation modelling related to these properties will be discussed.

  • 1199822.
    Östlund, Thilda
    et al.
    Luleå tekniska universitet, Institutionen för hälsovetenskap.
    Andersson, Malin
    Luleå tekniska universitet, Institutionen för hälsovetenskap.
    Kvinnors upplevelser av att leva med livmoderhalscancer: - En litteraturstudie2016Självständigt arbete på grundnivå (yrkesexamen), 180 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Livmoderhalscancer drabbar cirka 450 kvinnor i Sverige varje år. Sjukdomen anses skamfull ochtabubelagd i vissa delar av världen, där kvinnor stigmatiseras och förnedras på grund av sinsjukdom. Att drabbas av en dödlig sjukdom kan ge upphov till många olika känslor, sompåverkar det psykiska och fysiska välbefinnandet negativt. Psykisk ohälsa ger ett lidande för dendrabbade och därmed en försämrad livskvalitet. Syftet med denna litteraturstudie var att beskrivakvinnors upplevelser av att leva med livmoderhalscancer. En litteratursökning genomfördes ochresulterade i 9 artiklar som analyserades med kvalitativ innehållsanalys med manifest ansats.Resultatet visade att kvinnor upplevde rädslor och chock i samband med beskedet, hela deras livvändes upp och ner. För att orka kämpa i sjukdomen var stöd från familj och vänner en viktig del.Det framkom även att kvinnor upplevde bristfällig information om sjukdomen, både frånomgivningen och från sjukvården. Det är viktigt att som sjuksköterska ha kunskap omsjukdomen och hur den påverkar kvinnor både fysiskt och psykiskt, för att kunna ge individuelltanpassad information som motsvarar behoven och ger ett bra stöd till den drabbade.

  • 1199823.
    Östlund Tjernström, Amanda
    Stockholms universitet, Juridiska fakulteten, Juridiska institutionen.
    Finansdepartementets förslag avseende nya riktade ränteavdragsbegränsningsregler: en kritisk granskning av nödvändigheten, lämpligheten samt utformningen av reglerna2017Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 1199824.
    Östlund, U.
    et al.
    Department of Neurobiology, Care Sciences, and Society, Karolinska Institutet, Stockholm, Sweden .
    Bäckström, Britt
    Mittuniversitetet, Fakulteten för humanvetenskap, Avdelningen för omvårdnad.
    Lindh, V.
    Department of Nursing, Umeå University, Umeå, Sweden.
    Sundin, K.
    Department of Nursing, Umeå University, Umeå, Sweden.
    Saveman, B. .-I.
    Department of Nursing, Umeå University, Umeå, Sweden.
    Nurses' fidelity to theory-based core components when implementing Family Health Conversations - a qualitative inquiry2015Ingår i: Scandinavian Journal of Caring Sciences, ISSN 0283-9318, E-ISSN 1471-6712, Vol. 29, nr 3, s. 582-590Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background and aim: A family systems nursing intervention, Family Health Conversation, has been developed in Sweden by adapting the Calgary Family Assessment and Intervention Models and the Illness Beliefs Model. The intervention has several theoretical assumptions, and one way translate the theory into practice is to identify core components. This may produce higher levels of fidelity to the intervention. Besides information about how to implement an intervention in accordance to how it was developed, evaluating whether it was actually implemented as intended is important. Accordingly, we describe the nurses' fidelity to the identified core components of Family Health Conversation. Intervention and research methods: Six nurses, working in alternating pairs, conducted Family Health Conversations with seven families in which a family member younger than 65 had suffered a stroke. The intervention contained a series of three-1-hour conversations held at 2-3 week intervals. The nurses followed a conversation structure based on 12 core components identified from theoretical assumptions. The transcripts of the 21 conversations were analysed using manifest qualitative content analysis with a deductive approach. Results and conclusion: The 'core components' seemed to be useful even if nurses' fidelity varied among the core components. Some components were followed relatively well, but others were not. This indicates that the process for achieving fidelity to the intervention can be improved, and that it is necessary for nurses to continually learn theory and to practise family systems nursing. We suggest this can be accomplished through reflections, role play and training on the core components. Furthermore, as in this study, joint reflections on how the core components have been implemented can lead to deeper understanding and knowledge of how Family Health Conversation can be delivered as intended. © 2015 Nordic College of Caring Science.

  • 1199825.
    Östlund, U.
    et al.
    Uppsala University/Region Gävleborg, Gävle, Sweden .
    Bäckström, Britt
    Mittuniversitetet, Fakulteten för humanvetenskap, Avdelningen för omvårdnad.
    Saveman, B. -I
    Umeå University, Umeå, Sweden .
    Lindh, V.
    Umeå University, Umeå, Sweden .
    Sundin, K.
    Umeå University, Örnsköldsvik, Sweden.
    A Family Systems Nursing Approach for Families Following a Stroke: Family Health Conversations2016Ingår i: Journal of Family Nursing, Vol. 22, nr 2, s. 148-171Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Stroke in midlife is a life altering, challenging experience for the whole family thereby necessitating a family approach to intervention. The aim of this study was to describe the experiences of 17 family members living in Sweden, including seven adult stroke patients (six males; one female) under the age of 65 who participated in a series of three nurse-led family conversations that were offered in each family's home. These Family Health Conversations (FamHC) were guided by the conceptual lens of Family System Nursing. Individual, semi-structured, evaluative interviews conducted with each participant one month after the FamHC were analyzed by qualitative content analysis. The FamHC were described by family members as a unique conversation that they had not previously experienced in health care contexts. Family members described possibilities for relational sharing and meaningful conversations as well as changes in family functioning that support the suitability of FamHC for family stroke care.

  • 1199826. Östlund, Ulrika
    Family nursing in oncology care--do we need a paradigm shift?2010Ingår i: European Journal of Oncology Nursing, ISSN 1462-3889, E-ISSN 1532-2122, Vol. 14, nr 3, s. 181-2Artikel i tidskrift (Refereegranskat)
  • 1199827.
    Östlund, Ulrika
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Centrum för klinisk forskning, Gävleborg.
    Backström, Britt
    Mid Sweden Univ, Dept Hlth Sci, Sundsvall, Sweden..
    Säveman, Britt-Inger
    Umea Univ, Dept Nursing, Umea, Sweden..
    Lindh, Viveca
    Umea Univ, Dept Nursing, Umea, Sweden..
    Sundin, Karin
    Umea Univ, Dept Nursing, Ornskoldsvik, Sweden..
    A Family Systems Nursing Approach for Families Following a Stroke: Family Health Conversations2016Ingår i: Journal of Family Nursing, ISSN 1074-8407, E-ISSN 1552-549X, Vol. 22, nr 2, s. 148-171Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Stroke in midlife is a life altering, challenging experience for the whole family thereby necessitating a family approach to intervention. The aim of this study was to describe the experiences of 17 family members living in Sweden, including seven adult stroke patients (six males; one female) under the age of 65 who participated in a series of three nurse-led family conversations that were offered in each family's home. These Family Health Conversations (FamHC) were guided by the conceptual lens of Family System Nursing. Individual, semi-structured, evaluative interviews conducted with each participant one month after the FamHC were analyzed by qualitative content analysis. The FamHC were described by family members as a unique conversation that they had not previously experienced in health care contexts. Family members described possibilities for relational sharing and meaningful conversations as well as changes in family functioning that support the suitability of FamHC for family stroke care.

  • 1199828.
    Östlund, Ulrika
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska och farmaceutiska vetenskapsområdet, centrumbildningar mm, Centrum för klinisk forskning, Gävleborg. Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för folkhälso- och vårdvetenskap, Vårdvetenskap.
    Blomberg, Karin
    Örebro Univ, Sch Hlth Sci, Fac Med & Hlth, Örebro, Sweden.
    Söderman, Annika
    Örebro Univ, Sch Hlth Sci, Fac Med & Hlth, Örebro, Sweden.
    Harstäde, Carina Werkander
    Linnaeus Univ, Dept Hlth & Caring Sci, Ctr Collaborat Palliat Care, Kalmar Vaxjö, Sweden.
    How to conserve dignity in palliative care: suggestions from older patients, significant others, and healthcare professionals in Swedish municipal care2019Ingår i: BMC Palliative Care, ISSN 1472-684X, E-ISSN 1472-684X, Vol. 18, artikel-id 10Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: An essential aspect of palliative care nursing is to conserve the dignity of the patient. A Dignity Care Intervention (DCI) has been developed in Scotland to facilitate this role for nurses. The DCI is now being adapted to a Swedish context (DCI-SWE) and a central step is to identify culturally relevant, dignity-conserving care actions. These care actions will be incorporated into the DCI-SWE. Therefore, the aim of this study was to suggest care actions for conserving dignity in palliative care from the perspectives of the patients, significant others (SOs), and health care professionals (HPs) in municipality care in Sweden.

    Methods: This study used a descriptive design with a qualitative approach. Data from 20 participants were collected through semi-structured individual interviews with patients (n = 3), SOs (n = 4), two focus groups with nurses (n = 9) and one focus group with physicians (n = 4) in two Swedish municipalities. These data were deductively analysed using qualitative content analysis with the Chochinov model of dignity as framework.

    Results: With the Chochinov model of dignity as a framework, care actions based on suggestions from the participants were identified and presented under three themes: Illness related concerns, Dignity conserving repertoire, and Social dignity inventory. The study found both specific concrete care actions and more general approaches. Such general approaches were found to be relevant for several dignity related issues as all-embracing attitudes and behaviours. However, these general approaches could also be relevant as specific care actions to conserve dignity in relation to certain issues. Care actions were also found to be linked to each other, showing the importance of a holistic perspective in conserving dignity.

    Conclusions: As part of the adaption of the DCI from a Scottish to a Swedish context, this study added relevant care actions for collaborative planning of individualised care in mutual dialogues between nurses and those they care for. The adapted intervention, DCI-SWE, has the potential to help the nurses in providing palliative care of evidence-based quality.

  • 1199829.
    Östlund, Ulrika
    et al.
    Centre for Research & Development, Uppsala University/Region Gävleborg, Gävle, Sweden; Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden.
    Blomberg, Karin
    Örebro universitet, Institutionen för hälsovetenskaper.
    Söderman, Annika
    Örebro universitet, Institutionen för hälsovetenskaper.
    Werkander Harstäde, Carina
    Centre for Collaborative Palliative Care, Department of Health and Caring Sciences, Linnaeus University, Kalmar/Växjö, Sweden.
    How to conserve dignity in palliative care: suggestions from older patients, significant others, and healthcare professionals in Swedish municipal care2019Ingår i: BMC Palliative Care, ISSN 1472-684X, E-ISSN 1472-684X, Vol. 18, nr 1, artikel-id 10Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND: An essential aspect of palliative care nursing is to conserve the dignity of the patient. A Dignity Care Intervention (DCI) has been developed in Scotland to facilitate this role for nurses. The DCI is now being adapted to a Swedish context (DCI-SWE) and a central step is to identify culturally relevant, dignity-conserving care actions. These care actions will be incorporated into the DCI-SWE. Therefore, the aim of this study was to suggest care actions for conserving dignity in palliative care from the perspectives of the patients, significant others (SOs), and health care professionals (HPs) in municipality care in Sweden.

    METHODS: This study used a descriptive design with a qualitative approach. Data from 20 participants were collected through semi-structured individual interviews with patients (n = 3), SOs (n = 4), two focus groups with nurses (n = 9) and one focus group with physicians (n = 4) in two Swedish municipalities. These data were deductively analysed using qualitative content analysis with the Chochinov model of dignity as framework.

    RESULTS: With the Chochinov model of dignity as a framework, care actions based on suggestions from the participants were identified and presented under three themes: Illness related concerns, Dignity conserving repertoire, and Social dignity inventory. The study found both specific concrete care actions and more general approaches. Such general approaches were found to be relevant for several dignity related issues as all-embracing attitudes and behaviours. However, these general approaches could also be relevant as specific care actions to conserve dignity in relation to certain issues. Care actions were also found to be linked to each other, showing the importance of a holistic perspective in conserving dignity.

    CONCLUSIONS: As part of the adaption of the DCI from a Scottish to a Swedish context, this study added relevant care actions for collaborative planning of individualised care in mutual dialogues between nurses and those they care for. The adapted intervention, DCI-SWE, has the potential to help the nurses in providing palliative care of evidence-based quality.

  • 1199830.
    Östlund, Ulrika
    et al.
    Uppsala University.
    Blomberg, Karin
    Örebro University.
    Söderman, Annika
    Örebro University.
    Werkander Harstäde, Carina
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för hälso- och vårdvetenskap (HV). Carina Werkander Harstäde.
    How to conserve dignity in palliative care: suggestions from older patients, significant others, and healthcare professionals in Swedish municipal care2019Ingår i: BMC Palliative Care, ISSN 1472-684X, E-ISSN 1472-684X, Vol. 18, artikel-id 10Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background: An essential aspect of palliative care nursing is to conserve the dignity of the patient. A Dignity CareIntervention (DCI) has been developed in Scotland to facilitate this role for nurses. The DCI is now being adapted toa Swedish context (DCI-SWE) and a central step is to identify culturally relevant, dignity-conserving care actions.These care actions will be incorporated into the DCI-SWE. Therefore, the aim of this study was to suggest careactions for conserving dignity in palliative care from the perspectives of the patients, significant others (SOs), andhealth care professionals (HPs) in municipality care in Sweden.Methods: This study used a descriptive design with a qualitative approach. Data from 20 participants were collectedthrough semi-structured individual interviews with patients (n = 3), SOs (n = 4), two focus groups with nurses (n = 9)and one focus group with physicians (n = 4) in two Swedish municipalities. These data were deductively analysedusing qualitative content analysis with the Chochinov model of dignity as framework.Results: With the Chochinov model of dignity as a framework, care actions based on suggestions from the participantswere identified and presented under three themes: Illness related concerns, Dignity conserving repertoire, and Socialdignity inventory. The study found both specific concrete care actions and more general approaches. Such generalapproaches were found to be relevant for several dignity related issues as all-embracing attitudes and behaviours.However, these general approaches could also be relevant as specific care actions to conserve dignity in relation tocertain issues. Care actions were also found to be linked to each other, showing the importance of a holisticperspective in conserving dignity.Conclusions: As part of the adaption of the DCI from a Scottish to a Swedish context, this study added relevant careactions for collaborative planning of individualised care in mutual dialogues between nurses and those they care for. Theadapted intervention, DCI-SWE, has the potential to help the nurses in providing palliative care of evidence-based quality.Keywords: Care actions, Community nursing, DCI-SWE, Dignity, Dignity care intervention, End of life care, Palliative care,Person centred, Sweden

  • 1199831. Östlund, Ulrika
    et al.
    Brown, Hilary
    Johnston, Bridget
    Dignity conserving care at end-of-life: a narrative review.2012Ingår i: European Journal of Oncology Nursing, ISSN 1462-3889, E-ISSN 1532-2122, Vol. 16, nr 4, s. 353-67Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    PURPOSE OF THE RESEARCH: This narrative literature review uses systematic principles to define evidence regarding dignity conserving care at end-of-life from published research on dignity or distress in end-of-life care.

    METHODS: The Chochinov model of dignity was used as a pre-defined framework. Articles were reviewed using thematic analysis to produce a synthesis of findings. A total of 39 articles (26 qualitative and 13 quantitative) fulfilled the inclusion criteria and were found to give suggestions on care actions.

    KEY RESULTS: Several care actions were identified related to all themes contained within the Dignity Model, except aftermath concerns. Examples include: controlling symptoms; listening to the patient and taking them seriously; providing advice concerning how to cope on a daily basis; treating patients as equals and with respect, and; encouraging the family members' presence.

    CONCLUSIONS: Evidence for supporting palliative care services has previously been found to be weak in determining solutions to meet individual's important needs. Drawing together primary research, as in this study, is therefore of importance. The suggested care actions will be used to develop a dignity care pathway for end-of-life care, which is currently being evaluated by the authors. The intention is to provide more valid evidence for the effectiveness of the care actions suggested.

  • 1199832. Östlund, Ulrika
    et al.
    Bäckström, Britt
    Lindh, Viveca
    Umeå universitet, Institutionen för omvårdnad.
    Sundin, Karin
    Umeå universitet, Institutionen för omvårdnad.
    Saveman, Britt-Inger
    Umeå universitet, Institutionen för omvårdnad.
    Nurses' fidelity to theory-based core components when implementing Family Health Conversations: a qualitative inquiry2015Ingår i: Scandinavian Journal of Caring Sciences, ISSN 0283-9318, E-ISSN 1471-6712, Vol. 29, nr 3, s. 582-590Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND AND AIM: A family systems nursing intervention, Family Health Conversation, has been developed in Sweden by adapting the Calgary Family Assessment and Intervention Models and the Illness Beliefs Model. The intervention has several theoretical assumptions, and one way translate the theory into practice is to identify core components. This may produce higher levels of fidelity to the intervention. Besides information about how to implement an intervention in accordance to how it was developed, evaluating whether it was actually implemented as intended is important. Accordingly, we describe the nurses' fidelity to the identified core components of Family Health Conversation.

    INTERVENTION AND RESEARCH METHODS: Six nurses, working in alternating pairs, conducted Family Health Conversations with seven families in which a family member younger than 65 had suffered a stroke. The intervention contained a series of three-1-hour conversations held at 2-3 week intervals. The nurses followed a conversation structure based on 12 core components identified from theoretical assumptions. The transcripts of the 21 conversations were analysed using manifest qualitative content analysis with a deductive approach.

    RESULTS AND CONCLUSION: The 'core components' seemed to be useful even if nurses' fidelity varied among the core components. Some components were followed relatively well, but others were not. This indicates that the process for achieving fidelity to the intervention can be improved, and that it is necessary for nurses to continually learn theory and to practise family systems nursing. We suggest this can be accomplished through reflections, role play and training on the core components. Furthermore, as in this study, joint reflections on how the core components have been implemented can lead to deeper understanding and knowledge of how Family Health Conversation can be delivered as intended.

  • 1199833. Östlund, Ulrika
    et al.
    Bäckström, Britt
    Lindh, Viveca
    Umeå universitet, Medicinska fakulteten, Institutionen för omvårdnad.
    Sundin, Karin
    Umeå universitet, Medicinska fakulteten, Institutionen för omvårdnad.
    Saveman, Britt-Inger
    Umeå universitet, Medicinska fakulteten, Institutionen för omvårdnad.
    Nurses' fidelity to theory-based core components when implementing Family Health Conversations: a qualitative inquiry2015Ingår i: Scandinavian Journal of Caring Sciences, ISSN 0283-9318, E-ISSN 1471-6712, Vol. 29, nr 3, s. 582-590Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    BACKGROUND AND AIM: A family systems nursing intervention, Family Health Conversation, has been developed in Sweden by adapting the Calgary Family Assessment and Intervention Models and the Illness Beliefs Model. The intervention has several theoretical assumptions, and one way translate the theory into practice is to identify core components. This may produce higher levels of fidelity to the intervention. Besides information about how to implement an intervention in accordance to how it was developed, evaluating whether it was actually implemented as intended is important. Accordingly, we describe the nurses' fidelity to the identified core components of Family Health Conversation.

    INTERVENTION AND RESEARCH METHODS: Six nurses, working in alternating pairs, conducted Family Health Conversations with seven families in which a family member younger than 65 had suffered a stroke. The intervention contained a series of three-1-hour conversations held at 2-3 week intervals. The nurses followed a conversation structure based on 12 core components identified from theoretical assumptions. The transcripts of the 21 conversations were analysed using manifest qualitative content analysis with a deductive approach.

    RESULTS AND CONCLUSION: The 'core components' seemed to be useful even if nurses' fidelity varied among the core components. Some components were followed relatively well, but others were not. This indicates that the process for achieving fidelity to the intervention can be improved, and that it is necessary for nurses to continually learn theory and to practise family systems nursing. We suggest this can be accomplished through reflections, role play and training on the core components. Furthermore, as in this study, joint reflections on how the core components have been implemented can lead to deeper understanding and knowledge of how Family Health Conversation can be delivered as intended.

  • 1199834. Östlund, Ulrika
    et al.
    Bäckström, Britt
    Saveman, Britt-Inger
    Umeå universitet, Medicinska fakulteten, Institutionen för omvårdnad.
    Lindh, Viveca
    Umeå universitet, Medicinska fakulteten, Institutionen för omvårdnad.
    Sundin, Karin
    Umeå universitet, Medicinska fakulteten, Institutionen för omvårdnad.
    A Family Systems Nursing Approach for Families Following a Stroke: Family Health Conversations2016Ingår i: Journal of Family Nursing, ISSN 1074-8407, E-ISSN 1552-549X, Vol. 22, nr 2, s. 148-171Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Stroke in midlife is a life altering, challenging experience for the whole family thereby necessitating a family approach to intervention. The aim of this study was to describe the experiences of 17 family members living in Sweden, including seven adult stroke patients (six males; one female) under the age of 65 who participated in a series of three nurse-led family conversations that were offered in each family's home. These Family Health Conversations (FamHC) were guided by the conceptual lens of Family System Nursing. Individual, semi-structured, evaluative interviews conducted with each participant one month after the FamHC were analyzed by qualitative content analysis. The FamHC were described by family members as a unique conversation that they had not previously experienced in health care contexts. Family members described possibilities for relational sharing and meaningful conversations as well as changes in family functioning that support the suitability of FamHC for family stroke care.

  • 1199835. Östlund, Ulrika
    et al.
    Gustavsson, Petter
    Fürst, Carl-Johan
    Translation and cultural adaptation of the Piper Fatigue Scale for use in Sweden.2007Ingår i: European Journal of Oncology Nursing, ISSN 1462-3889, E-ISSN 1532-2122, Vol. 11, nr 2, s. 133-40Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The aim of this study was to translate and culturally adapt the revised Piper Fatigue Scale to Swedish. For translation, guidelines for cross-cultural adaptation were used. Two teams independently translated the instrument and two other teams produced back-translations, after which a multidisciplinary committee decided on a Swedish version. In pre-test interviews, ten cancer patients were encouraged to think out loud while completing the Swedish version. Their verbal responses were analysed and used for a second revision. The initial translations varied in words, expressions and grammar, shown in a lack of equivalence to the original instrument after back-translation. In order to establish semantic equivalence, the committee changed some grammatical constructions, and some words were replaced for experiential and conceptual equivalence. When analysing the pre-test, obscurities due to the phrasing of some items were revealed and dealt with in the second revision. This study does not fulfil the process of validation for a translated instrument but offers a sound basis for further accumulation of evidence for validity, and facilitates the choice of an appropriate instrument for studying cancer-related fatigue in Sweden.

  • 1199836.
    Östlund, Ulrika
    et al.
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.
    Kidd, Lisa
    Institute for Applied Health Research/School of Health, Glasgow Caledonian University, United Kingdom.
    Wengström, Yvonne
    Division of Nursing, Department or Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.
    Rowa-Dewar, Neneh
    Public Health Sciences, University of Edinburgh, United Kingdom.
    Combining qualitative and quantitative research within mixed method research designs: A methodological review2011Ingår i: International Journal of Nursing Studies, ISSN 0020-7489, E-ISSN 1873-491X, Vol. 48, nr 3, s. 369-383Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objectives: It has been argued that mixed methods research can be useful in nursing and health science because of the complexity of the phenomena studied. However, the integration of qualitative and quantitative approaches continues to be one of much debate and there is a need for a rigorous framework for designing and interpreting mixed methods research: This paper explores the analytical approaches (i.e. parallel, concurrent or sequential) used in mixed methods studies within healthcare and exemplifies the use of triangulation as a methodological metaphor for drawing inferences from qualitative and quantitative findings originating from such analyses. Design: This review of the literature used systematic principles in searching CINAHL, Medline and PsycINFO for healthcare research studies which employed a mixed methods approach and were published in the English language between January 1999 and September 2009. Results: In total, 168 studies were included in the results. Most studies originated in the United States of America (USA), the United Kingdom (UK) and Canada. The analytic approach most widely used was parallel data analysis. A number of studies used sequential data analysis; far fewer studies employed concurrent data analysis. Very few of these studies clearly articulated the purpose for using a mixed methods design. The use of the methodological metaphor of triangulation on convergent, complementary, and divergent results from mixed methods studies is exemplified and an example of developing theory from such data is provided. Conclusion: A trend for conducting parallel data analysis on quantitative and qualitative data in mixed methods healthcare research has been identified in the studies included in this review. Using triangulation as a methodological metaphor can facilitate the integration of qualitative and quantitative findings, help researchers to clarify their theoretical propositions and the basis of their results. This can offer a better understanding of the links between theory and empirical findings, challenge theoretical assumptions and develop new theory. (C) 2010 Elsevier Ltd. All rights reserved.

  • 1199837.
    Östlund, Ulrika
    et al.
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.
    Kidd, Lisa
    Institute for Applied Health Research/School of Health, Glasgow Caledonian University, Glasgow, United Kingdom.
    Wengström, Yvonne
    Division of Nursing, Department or Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden.
    Rowa-Dewar, Neneh
    Public Health Sciences, University of Edinburgh, Edinburgh, United Kingdom.
    Combining qualitative and quantitative research within mixed method research designs: A methodological review2011Ingår i: International Journal of Nursing Studies, ISSN 0020-7489, E-ISSN 1873-491X, Vol. 48, nr 3, s. 369-383Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objectives: It has been argued that mixed methods research can be useful in nursing and health science because of the complexity of the phenomena studied. However, the integration of qualitative and quantitative approaches continues to be one of much debate and there is a need for a rigorous framework for designing and interpreting mixed methods research: This paper explores the analytical approaches (i.e. parallel, concurrent or sequential) used in mixed methods studies within healthcare and exemplifies the use of triangulation as a methodological metaphor for drawing inferences from qualitative and quantitative findings originating from such analyses. Design: This review of the literature used systematic principles in searching CINAHL, Medline and PsycINFO for healthcare research studies which employed a mixed methods approach and were published in the English language between January 1999 and September 2009. Results: In total, 168 studies were included in the results. Most studies originated in the United States of America (USA), the United Kingdom (UK) and Canada. The analytic approach most widely used was parallel data analysis. A number of studies used sequential data analysis; far fewer studies employed concurrent data analysis. Very few of these studies clearly articulated the purpose for using a mixed methods design. The use of the methodological metaphor of triangulation on convergent, complementary, and divergent results from mixed methods studies is exemplified and an example of developing theory from such data is provided. Conclusion: A trend for conducting parallel data analysis on quantitative and qualitative data in mixed methods healthcare research has been identified in the studies included in this review. Using triangulation as a methodological metaphor can facilitate the integration of qualitative and quantitative findings, help researchers to clarify their theoretical propositions and the basis of their results. This can offer a better understanding of the links between theory and empirical findings, challenge theoretical assumptions and develop new theory. (C) 2010 Elsevier Ltd. All rights reserved.

  • 1199838.
    Östlund, Ulrika
    et al.
    Karolinska Inst.
    Persson, Carina
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för hälso- och vårdvetenskap (HV).
    Examining Family Responses to Family Systems Nursing Interventions: An Integrative Review2014Ingår i: Journal of Family Nursing, ISSN 1074-8407, E-ISSN 1552-549X, Vol. 20, nr 3, s. 259-286Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    To add to the small, but growing, number of literature reviews of family interventions in health care, a systematic literature search of Family Systems Nursing intervention research resulted in the inclusion of 17 empirical research reports. Family Systems Nursing intervention research to date has primarily used qualitative methods and a few quasi-experimental designs using pre-post outcome measures. Families' responses to Family Systems Nursing interventions were categorized in this integrative review using the cognitive, affective, and behavioral domains of family functioning proposed by Wright and Leahey. Family response in the cognitive domain found improved understanding, capability, and enhanced coping. The affective response categories showed caring more about each other and the family, improved family emotional well-being, and improved individual emotional well-being. Finally, family responses in the behavioral domain comprised caring more for each other and the family, improvement in interactions within and outside family, and healthier individual behavior. These findings may guide the design of future family nursing intervention research and the selection of family outcome measures to examine the usefulness of Family Systems Nursing interventions. More intervention research using experimental and quasi-experimental designs is needed to strengthen the evidence for Family Systems Nursing practice.

  • 1199839.
    Östlund, Ulrika
    et al.
    Karolinska Inst.
    Persson, Carina
    Linnéuniversitetet, Institutionen för hälso- och vårdvetenskap (HV).
    Examining Family Responses to Family Systems Nursing Interventions: An Integrative Review2014Ingår i: Journal of Family Nursing, ISSN 1074-8407, E-ISSN 1552-549X, Vol. 20, nr 3, s. 259-286Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    To add to the small, but growing, number of literature reviews of family interventions in health care, a systematic literature search of Family Systems Nursing intervention research resulted in the inclusion of 17 empirical research reports. Family Systems Nursing intervention research to date has primarily used qualitative methods and a few quasi-experimental designs using pre-post outcome measures. Families' responses to Family Systems Nursing interventions were categorized in this integrative review using the cognitive, affective, and behavioral domains of family functioning proposed by Wright and Leahey. Family response in the cognitive domain found improved understanding, capability, and enhanced coping. The affective response categories showed caring more about each other and the family, improved family emotional well-being, and improved individual emotional well-being. Finally, family responses in the behavioral domain comprised caring more for each other and the family, improvement in interactions within and outside family, and healthier individual behavior. These findings may guide the design of future family nursing intervention research and the selection of family outcome measures to examine the usefulness of Family Systems Nursing interventions. More intervention research using experimental and quasi-experimental designs is needed to strengthen the evidence for Family Systems Nursing practice.

  • 1199840.
    Östlund, Ulrika
    et al.
    Karolinska Institutet, Nursing Division Department NVS, Huddinge, Sweden.
    Persson, Carina
    Karolinska Institutet, Nursing Division Department NVS, Huddinge, Sweden.
    Wengström, Yvonne
    Karolinska Institutet, Nursing Division Department NVS, Huddinge, Sweden.
    Gustavsson, Petter
    Karolinska Institutet, Nursing Division Department NVS, Huddinge, Sweden.
    Health-related quality of life in significant others of patients dying from lung cancer2007Ingår i: European Journal of Cancer Supplements, ISSN 1359-6349, E-ISSN 1878-1217, Vol. 5, nr 4, s. 419-419Artikel i tidskrift (Refereegranskat)
  • 1199841.
    Östlund, Ulrika
    et al.
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 23300, Huddinge, Sweden.
    Wennman-Larsen, Agneta
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 23300, Huddinge, Sweden.
    Gustavsson, Petter
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 23300, Huddinge, Sweden.
    Wengström, Yvonne
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 23300, Huddinge, Sweden.
    What symptom and functional dimensions can be predictors for global ratings of overall quality of life in lung cancer patients?2007Ingår i: Supportive Care in Cancer, ISSN 0941-4355, E-ISSN 1433-7339, Vol. 15, nr 10, s. 1199-1205Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose This study explores what dimensions of a health-related quality of life (HRQOL) questionnaire predict global ratings of overall quality of life (QOL) in lung cancer patients in assessments by patients and significant others, respectively. Materials and methods The analyses were based on dyadic assessments from lung cancer patients and their significant others. A subset of scales and items from the Swedish version of the European Organization for Research and Treatment of Cancer (EORTC) QLQ C30 and the lung-cancer-specific module, LC-13, was selected. Using multiple regression procedures, the relative importance of different symptoms and of functional impairments in predicting overall QOL was examined. Results The multiple regressions revealed that emotional functioning and fatigue were the only significant predictors of overall QOL for both the patients and the significant others' assessments. In addition, physical functioning was found to be another predictor in the significant others' assessments. Conclusion The results emphasize that it is essential to consider both emotional functioning and fatigue as important areas for overall QOL in lung cancer patients.

  • 1199842.
    Östlund, Ulrika
    et al.
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 23300, Huddinge, Sweden.
    Wennman-Larsen, Agneta
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 23300, Huddinge, Sweden.
    Gustavsson, Petter
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 23300, Huddinge, Sweden.
    Wengström, Yvonne
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, 23300, Huddinge, Sweden.
    What symptom and functional dimensions can be predictors for global ratings of overall quality of life in lung cancer patients?2007Ingår i: Supportive Care in Cancer, ISSN 0941-4355, E-ISSN 1433-7339, Vol. 15, nr 10, s. 1199-1205Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Purpose This study explores what dimensions of a health-related quality of life (HRQOL) questionnaire predict global ratings of overall quality of life (QOL) in lung cancer patients in assessments by patients and significant others, respectively. Materials and methods The analyses were based on dyadic assessments from lung cancer patients and their significant others. A subset of scales and items from the Swedish version of the European Organization for Research and Treatment of Cancer (EORTC) QLQ C30 and the lung-cancer-specific module, LC-13, was selected. Using multiple regression procedures, the relative importance of different symptoms and of functional impairments in predicting overall QOL was examined. Results The multiple regressions revealed that emotional functioning and fatigue were the only significant predictors of overall QOL for both the patients and the significant others' assessments. In addition, physical functioning was found to be another predictor in the significant others' assessments. Conclusion The results emphasize that it is essential to consider both emotional functioning and fatigue as important areas for overall QOL in lung cancer patients.

  • 1199843.
    Östlund, Ulrika
    et al.
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Wennman-Larsen, Agneta
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Persson, Carina
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Gustavsson, Petter
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Wengström, Yvonne
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Mental health in significant others of patients dying from lung cancer2010Ingår i: Psycho-Oncology, ISSN 1057-9249, E-ISSN 1099-1611, Vol. 19, nr 1, s. 29-37Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objective: Definitions and measures of significant others' mental health vary, but stress processes have been associated with caregiver outcomes of this kind. Thus, various mental health outcomes probably appear, either as specific responses to particular types of caregiver stressors, or as part of a general response resulting from an accumulation of various stressors. The present study explores the occurrence of symptoms of strain with regard to depression, exhaustion, and emotional well-being in significant others of patients dying from lung cancer, and how these symptoms coexist. Methods: Measures used were the Montgomery Asberg Depression Rating Scale, the OLdenburg Burnout Inventory, and the Swedish Health-Related Quality of Life Survey. Data from 84 significant others of patients dying from lung cancer were collected at a time-point during the last 4 months before the patients died and subsequently analysed. The occurrence of symptoms of strain was established by creating cut-off scores from the general population. To explore how the different symptoms coexisted, hierarchical agglomerative cluster analyses were conducted using Ward's method. Results: Approximately 40% of the significant others reported symptoms of strain for each of the three outcomes, and a coexistence was found since the significant others clustered as subgroups, ranging from 'high on all scales' to 'low on all scales'. Conclusion: A considerable proportion of the significant others were thus negatively affected in terms of mental health. We conclude that being a significant other of a person dying from lung cancer most likely results in a general response to this major life event. Copyright (C) 2009 John Wiley & Sons, Ltd.

  • 1199844. Östlund, Ulrika
    et al.
    Wennman-Larsen, Agneta
    Persson, Carina
    Neurobiologi, vårdvetenskap och samhälle.
    Gustavsson, Petter
    Wengström, Yvonne
    Mental health in significant others of patients dying from lung cancer.2010Ingår i: Psycho-Oncology, ISSN 1057-9249, E-ISSN 1099-1611, Vol. 19, nr 1, s. 29-37Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    OBJECTIVE: Definitions and measures of significant others' mental health vary, but stress processes have been associated with caregiver outcomes of this kind. Thus, various mental health outcomes probably appear, either as specific responses to particular types of caregiver stressors, or as part of a general response resulting from an accumulation of various stressors. The present study explores the occurrence of symptoms of strain with regard to depression, exhaustion, and emotional well-being in significant others of patients dying from lung cancer, and how these symptoms coexist.

    METHODS: Measures used were the Montgomery Asberg Depression Rating Scale, the OLdenburg Burnout Inventory, and the Swedish Health-Related Quality of Life Survey. Data from 84 significant others of patients dying from lung cancer were collected at a time-point during the last 4 months before the patients died and subsequently analysed. The occurrence of symptoms of strain was established by creating cut-off scores from the general population. To explore how the different symptoms coexisted, hierarchical agglomerative cluster analyses were conducted using Ward's method.

    RESULTS: Approximately 40% of the significant others reported symptoms of strain for each of the three outcomes, and a coexistence was found since the significant others clustered as subgroups, ranging from 'high on all scales' to 'low on all scales'.

    CONCLUSION: A considerable proportion of the significant others were thus negatively affected in terms of mental health. We conclude that being a significant other of a person dying from lung cancer most likely results in a general response to this major life event.

  • 1199845.
    Östlund, Ulrika
    et al.
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Wennman-Larsen, Agneta
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Persson, Carina
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Gustavsson, Petter
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Wengström, Yvonne
    Division of Nursing, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Huddinge, Sweden.
    Mental health in significant others of patients dying from lung cancer2010Ingår i: Psycho-Oncology, ISSN 1057-9249, E-ISSN 1099-1611, Vol. 19, nr 1, s. 29-37Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Objective: Definitions and measures of significant others' mental health vary, but stress processes have been associated with caregiver outcomes of this kind. Thus, various mental health outcomes probably appear, either as specific responses to particular types of caregiver stressors, or as part of a general response resulting from an accumulation of various stressors. The present study explores the occurrence of symptoms of strain with regard to depression, exhaustion, and emotional well-being in significant others of patients dying from lung cancer, and how these symptoms coexist. Methods: Measures used were the Montgomery Asberg Depression Rating Scale, the OLdenburg Burnout Inventory, and the Swedish Health-Related Quality of Life Survey. Data from 84 significant others of patients dying from lung cancer were collected at a time-point during the last 4 months before the patients died and subsequently analysed. The occurrence of symptoms of strain was established by creating cut-off scores from the general population. To explore how the different symptoms coexisted, hierarchical agglomerative cluster analyses were conducted using Ward's method. Results: Approximately 40% of the significant others reported symptoms of strain for each of the three outcomes, and a coexistence was found since the significant others clustered as subgroups, ranging from 'high on all scales' to 'low on all scales'. Conclusion: A considerable proportion of the significant others were thus negatively affected in terms of mental health. We conclude that being a significant other of a person dying from lung cancer most likely results in a general response to this major life event. Copyright (C) 2009 John Wiley & Sons, Ltd.

  • 1199846.
    Östlund, Ulrika
    et al.
    Care Sciences and Society, Karolinska Institutet, Sweden.
    Wennman-Larsen, Agneta
    Persson, Carina
    Gustavsson, Petter
    Wengström, Yvonne
    Mental health in significant others of patients dying from lung cancer2010Ingår i: Psycho-Oncology, ISSN 1057-9249, E-ISSN 1099-1611, Vol. 19, nr 1, s. 29-37Artikel i tidskrift (Refereegranskat)
  • 1199847.
    Östlund, Veronica
    et al.
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation.
    Alimam, Farah
    Mälardalens högskola, Akademin för utbildning, kultur och kommunikation.
    Lekens betydelse vid matematiklärande i förskolan: En kvalitativ studie med åtta förskollärare2015Självständigt arbete på grundnivå (yrkesexamen), 210 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Syftet med studien var att undersöka och analysera några förskollärares syn på hur leken kan främja barns lärande i matematik. Detta är en kvalitativ studie där vi har intervjuat åtta förskollärare för att ta reda på förskollärares syn på leken som verktyg i relation till matematiklärandet hos barn. Resultatet visar att förskollärarna i studien anser att samspel och kommunikation är viktigt både i den styrda och fria leken för barns lärande och utveckling i matematik. Slutsatser utifrån denna studie är att matematik finns överallt i det vardagliga arbetet. Det är viktigt att det finns medvetna förskollärare i verksamheten som synliggör och främjar barns lärande och utveckling av matematiken i det livslånga lärandet.

  • 1199848.
    Östlund, Viktor
    KTH, Skolan för kemivetenskap (CHE).
    Synthesis of highly substituted dienes via silaboration and crosscouplingreactions2012Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    A synthetic approach to highly substituted dienes has been investigated. In a four step

    synthesis, a wide range of molecules can be formed: Sonogashira coupling between an

    alkyne and a bromoalkene, silaboration of the newly formed enyne, Suzuki‐Miyaura

    coupling to exchange the boronic ester moiety, and silver(I) oxide activated crosscoupling

    to replace the silicon atom. The majority of final compounds are afforded in

    moderate to good yields (20‐55% over 4 steps). In some cases, the last step where the

    silyl moiety is exchanged to an aromatic ring has caused some problems: isomerization

    and lower yields.

  • 1199849.
    Östlund, Wallescka
    Högskolan i Jönköping, Hälsohögskolan, HHJ, Avd. för rehabilitering.
    Förutsättningar för att tillämpa evidensbaserad praktik inom arbetsterapi2019Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
  • 1199850.
    Östlund, Åsa
    et al.
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    de la Motte, Hanna
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Östmark, Emma
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Wedin, Helena
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Sandin, Gustav
    RISE - Research Institutes of Sweden, Bioekonomi, Bioraffinaderi och energi.
    Chemical Recycling of Textile Fibres2018Ingår i: Sustainable Fibre Toolkit 2018 / [ed] Annie Gullingsrud, Stockholm: Stiftelsen Svensk Textilforskning , 2018, 2, s. 169-171Kapitel i bok, del av antologi (Övrigt vetenskapligt)
23994239952399623997239982399924000 1199801 - 1199850 av 1211742
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