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  • 54201.
    Witthöft, Cornelia M.
    et al.
    Sveriges lantbruksuniversitet, Uppsala.
    Arkbåge, Karin
    Johansson, Madelene
    Lundin, Eva
    Berglund, Gerd
    Zhang, Jie-Xian
    Lennernäs, Hans
    Dainty, Jack R
    Folate absorption from folate-fortified and processed foods using a human ileostomy model.2006Ingår i: British Journal of Nutrition, ISSN 0007-1145, E-ISSN 1475-2662, Vol. 95, nr 1, s. 181-187Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Data on folate absorption from food from validated human studies using physiological folate doses are still needed to estimate dietary requirements and to formulate recommendations. The aim of the present work was to study the effects from fortified and processed foods on folate absorption in ileostomy volunteers (n 9) using the area under the plasma concentration curve (AUC) and kinetic modelling. Using a standardized single-dose protocol, dairy products fortified with a candidate fortificant (6S)-5-methyltetrahydrofolate ((6S)-5-CH3-H4folate), folic acid-fortified bread and a dessert crème containing natural yeast folate polyglutamates were compared with folate supplements. Absorbed folate was estimated by AUC and a kinetic model, and non-absorbed folate by ileostomal folate excretion. Median apparent absorption from test foods ranged from 55 to 86 %. Added folate-binding proteins (FBP) significantly reduced folate absorption from dairy products, as in the absence of FBP, AUC-dose-corrected ratios were increased and ileal folate excretion decreased. After in vivo gastrointestinal passage of dairy products containing FBP, up to 43 % of the ingested FBP was found in ileostomal effluent. Folate absorption was similar for (6S)-5-CH3-H4folate fortificant from fermented milk and for folic acid from fortified bread. Folic acid, ingested as food fortificant in bread, was significantly less absorbed compared with an isolated supplement. We conclude that all tested foods were suitable matrices for folate fortification. However, dairy products, fortified with the new candidate fortificant (6S)-5-CH3-H4folate, are suitable if no active FBP is present.

  • 54202.
    Witthöft, Cornelia M.
    et al.
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för kemi och biomedicin (KOB).
    Hefni, Mohammed E.
    Mansoura University, Egypt.
    Folic acid and Folates: Physiology and Health Effects2016Ingår i: The Encyclopedia of Food and Health / [ed] Caballero, B., Finglas, P., and Toldrá, F., Elsevier, 2016, 1, s. 724-730Kapitel i bok, del av antologi (Refereegranskat)
    Abstract [en]

    This article reviews briefly information regarding important food sources for folate, effects from storage and processing on folate content, and bioprocessing techniques that could provide foods with increased folate content. Thereafter, folate intake, absorption, metabolism, and bioavailability are also discussed. Finally, health effects associated with folate are presented briefly.

  • 54203.
    Witthöft, Cornelia M.
    et al.
    Swedish Univ Agr Sci.
    Hefni, Mohammed E.
    Mansoura Univ, Egypt.
    Moazzami, Ali
    Swedish Univ Agr Sci.
    Folic acid supplement induces changes in 1-carbon metabolism of healthy women compared to food folate2015Ingår i: Annals of Nutrition and Metabolism, ISSN 0250-6807, E-ISSN 1421-9697, Vol. 67, s. 248-248Artikel i tidskrift (Refereegranskat)
  • 54204.
    Wittsell, Patrick
    Linnéuniversitetet, Fakulteten för konst och humaniora (FKH), Institutionen för kulturvetenskaper (KV).
    En vacker död: Manlighet i fyra japanska samurajfilmer2013Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Abstract

    A beautiful death – Manliness in four Japanese samurai movies

    This thesis deals with the samurai and his portrayal in Japanese historic movies and what kind of messages he conveys in form of masculinity to theater audiences. Four movies were chosen, two from the 1960s and two from the 2010s. The reasoning behind this was to look at two eras of samurai movies and if possible try to see differences between them. The history of the samurai, being a man and woman in modern Japan, R.W Connell and famous Japanese authors from different time eras acted as tools to try to answer the questions in hand. The tragic hero is still a dominant figure in Japanese storytelling and duty and loyalty are his companions. In a Japanese society were the role of the man and woman have long been locked in definite roles, counter culture start to become a factor in form of for example the “herbivore man”, but the man in the samurai movie, no matter from what decade still stand with his feet firmly set in the past.      

  • 54205.
    Witzgall, P.
    et al.
    SLU, Sweden.
    Bengtsson, M.
    SLU, Sweden.
    Unelius, C. Rikard
    KTH, Sweden.
    Lofqvist, J.
    SLU, Sweden.
    Attraction of Pea Moth Cydia-Nigricana F (Lepidoptera, Tortricidae) to Female Sex-Pheromone (E,E)-8,10-Dodecadien-1-Yl Acetate, Is Inhibited by Geometric Isomers E,Z, Z,E, and Z,Z1993Ingår i: Journal of Chemical Ecology, ISSN 0098-0331, E-ISSN 1573-1561, Vol. 19, nr 9, s. 1917-1928Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Field attraction of Cydia nigricana males to synthetic female sex pheromone (E,E)-8,10-dodecadien-1-yl acetate, formulated on red rubber septa, declined continuously during two weeks. This was due to isomerization of (E,E)-8, 10-dodecadien-1-yl acetate: eight days after application of purified E,E isomer, the proportion of E,Z; Z,E; and Z,Z isomers in rubber septa aged in the laboratory was 4 %; a 5 % addition of any one of these isomers to fresh lures of (E,E)-8, 10-dodecadien-1-yl acetate significantly reduced male attraction. Stereospecific syntheses of (E,Z)-, (Z,E)-, and (Z,Z)-g, 10-dodecadien-1-yl acetate are described. The pheromone gland of Cydia nigricana contains 0.8 ng/female of (E,E)-8,10-dodecadien-1-yl acetate, accompanied by three monounsaturated acetates, (E)-9-dodecen-1-yl acetate, (Z)-5-tetradecen-1-yl acetate, and (Z)-7-tetradecen-1-yl acetate (0.1 ng/female each). These compounds did not augment male trap catch when added to (E,E)-8,10-dodecadien-1-yl acetate.

  • 54206.
    Witzgall, P.
    et al.
    SLU, Sweden.
    Bäckman, A. C.
    SLU, Sweden.
    Svensson, M.
    SLU, Sweden.
    Bengtsson, M.
    SLU, Sweden.
    Unelius, C. Rikard
    KTH, Sweden.
    Vrkoc, J.
    Kirsch, P. A.
    Ioriatti, C.
    Lofqvist, J.
    SLU, Sweden.
    Potential of a blend of E8,E10-120H and E8,E10-12Ac for mating disruption of codling moth, Cydia pomonella L (Lep, Tortricidae)1996Ingår i: Journal of applied entomology, ISSN 0931-2048, E-ISSN 1439-0418, Vol. 120, nr 10, s. 611-614Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Dispensers of E8,E10-12OH (codlemone), E8,E10-12Ac (codlemone acetate), or both dispenser types were placed on the corners of 100 m(2) and 300 m(2) plots within apple orchards. Communication disruption of male codling moths, Cydia pomonella, was monitored with pheromone traps in the centres of these plots. In the 300 m(2) plots, trap catch was reduced only by codlemone. In the 100 m(2) plots, trap catch was reduced in all three treatments, fewest males were caught in plots treated with both codlemone and codlemone acetate. Males were attracted to codlemone dispensers, they were also flying actively around the tree crowns, well above the dispensers. This behaviour was not observed in treatments with codlemone acetate, where male orientation flights were directed only towards the trap in the plot centre. The antagonistic effect of each of the four geometric isomers of codlemone acetate was shown by another trap test. Addition of 20% E,E-; E,Z-; Z,E- or Z8,Z10-12Ac decreased male attraction to traps baited with E8, E10-12OH.

  • 54207.
    Witzgall, P.
    et al.
    SLU, Sweden.
    Makranczy, G.
    Toth, M.
    Hungary.
    Chambon, J. P.
    France.
    Unelius, C. Rikard
    KTH, Sweden.
    Bengtsson, M.
    SLU, Sweden.
    Sex pheromone of pear moth, Cydia pyrivora1998Ingår i: BioControl (Dordrecht), ISSN 1386-6141, E-ISSN 1573-8248, Vol. 43, nr 3, s. 339-344Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The sex pheromone of the pear moth, Cydia pyrivora, is (E,E)-8, 10-dodecadien-yl acetate. A 5%-addition of the geometric isomers E,Z and Z,Z decreased male attraction in the field, the Z,E isomer had no significant effect. Traps baited with 10 mu g E,E on grey rubber septa were attractive throughout the flight period of C. pyrivora. These traps allow specific detection of pear moth, and they are not attractive to its sibling species, codling moth C. pomonella.

  • 54208. Witzgall, P
    et al.
    Trematerra, P
    Liblikas, Ilme
    Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för naturvetenskap, NV.
    Bengtsson, M
    Unelius, C. Rikard
    Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för naturvetenskap, NV.
    Pheromone communication channels in tortricid moths: lower specificity of alcohol vs. acetate geometric isomer blends2010Ingår i: Bulletin of entomological research, ISSN 0007-4853, E-ISSN 1475-2670, Vol. 100, nr 2, s. 225-230Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Discrimination of conspecific and heterospecific signals is a key element in the evolution of specific mate recognition systems. Lepidopteran pheromone signals are typically composed of several compounds that synergize attraction of conspecific and inhibit attraction of heterospecific males. Blends convey specificity, but not their single components, that are typically shared by several species. Many sex pheromones are blends of geometric or positional isomers of straight-chain acetates, while species-specific blends of analogous alcohols have not been described. We have, therefore, studied the attraction of tortricid moths to the geometric isomers (E,E)-, (E,Z)-, (Z,E)- and (Z,Z)-8,10-dodecadien-1-ol. Only one species responding to these alcohols seemed to be attracted to a blend of two isomers, while most species are attracted to only one alcohol isomer. Lack of a pronounced synergist or antagonist effect of the other geometric isomers explains the lack of specific attraction to isomer blends and reduces accordingly the number of specific communication signals composed of these alcohols. In comparison, many more species respond to the analogous (E,E)-, (E,Z)-, (Z,E)- and (Z,Z)-8,10-dodecadienyl acetates and their binary blends. The acetate isomers all play a behavioural role, either as attractants, attraction synergists or antagonists, and thus promote specific communication with acetate blends. Male moths seem to discriminate the acetate isomers with greater precision than the analogous alcohols. It is proposed that discrimination is facilitated by steric differences between the four acetate isomers, as compared to the more uniform steric properties of the alcohols.

  • 54209.
    Wixe, Stina
    Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för naturvetenskap, NV.
    Placebo effect on accommodative functions2010Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 54210.
    Wnuk-Pel, Tomasz
    et al.
    University of Łódź, Poland.
    Alpenberg, Jan
    Linnéuniversitetet, Ekonomihögskolan (FEH), Institutionen för ekonomistyrning och logistik (ELO).
    The journey from mudd to a green dream: Motives and the role of the performance measurement system2019Ingår i: Presented at the 15th Asia Pacific Management Accounting Association Annual Conference, Doha, Qatar, November 2-5, 2019, 2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    The need for environmental reporting and a performance measurement system (PMS) in municipalities has developed as a response to the development of municipal strategies to become environmentally responsible.

    This case study provide empirical evidences for the underlying motives during several development phases for an environmental PMS, with focus on a sustainability strategy implementation in one Swedish municipality.

    Our results indicate a gradual strategy process, with several phases, which started with an initial passive approach focusing on solving environmental problems through a proactive and limited emphasis on existing environmental issues. During later phases, we found support for an even more proactive and broad approach taking into consideration ambitious and broader sustainability issues. As a consequence the development of the PMS has been two-dimensional. Firstly, from narrow focus on few aspects of environmental reporting (mainly fossil fuel emission and quality of drinking water) to broader issues of the environment and eventually a lot broader sustainability development. Secondly, from few non-financial indicators to an integration of non-financial and financial indicators (costs and revenues from environment) and then back again to focusing on a substantial number of non-financial indicators.

    This research add to prior literature by providing additional insight in the set of motives for the use of PMS during different development phases. Major stakeholders, i.e. politicians and managers of municipal departments and municipality owned companies have revealed several “layers” of motives which have shaped the development of the PMS. The research also showed that the PMS in itself has a noticeable symbolic importance in promoting and communicating of the green strategy to citizens and businesses in the region.

  • 54211.
    Wnuk-Pel, Tomasz
    et al.
    Linnéuniversitetet, Ekonomihögskolan (FEH), Institutionen för ekonomistyrning och logistik (ELO). University of Lodz, Poland.
    Christauskas, Ceslovas
    Aleksandras Stulginskis University, Lithuania.
    Analysis of operational budgeting practices in Polish and Lithuanian companies2018Ingår i: Transformations in Business & Economics, ISSN 1648-4460, Vol. 17, nr 3, s. 102-124Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The research focuses on detailed examination of operational budgeting practices in Poland and Lithuania. The findings indicate that operational budgeting continue to be applied widely. What is more the research shows that budgeting largely supports strategy implementation, planning, communication, coordination, activities evaluation, managers motivation, evaluation and remuneration, resources allocation and expenditures authorization functions. The overall satisfaction from operational budgeting of top management, middle level of management and management accounting/controlling function is moderate. When comparing Polish and Lithuanian practices of operational budgeting, the authors were struck more by the degree of convergence rather than divergence. Notwithstanding this view, the study identified some cross-country differences, however, for example: in the frequency of separating controllable and uncontrollable costs, popularity of zero based budgeting, level of difficulty to achieve budgets, level of details of budgeting and control systems, use of flexible budgeting or the influence of specialists in management accounting/controlling on the final version of the budget.

  • 54212.
    Wogatai, Ulrika
    Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för naturvetenskap, NV.
    Förekomst av hyperopi bland hjälpsökande på en VFA-resa i Bolivia2010Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Syfte: Att undersöka förekomst av hyperopi i förhållande till läskunnighet hos hjälpsökande hos VFA i Bolivia, samt jämföra med studier från andra delar av världen.

    Metod: Studien utfördes i april 2010 på tre olika orter i centrala Bolivia. Patienterna sökte själva upp platsen för att få en undersökning. Subjektiv refraktion utfördes binokulärt, utan dimning, med hjälp av provbåge, provlåda och syntavla med Snellen E, uppsatt på 5 meters avstånd. Hyperopi räknades som sfärisk ekvivalent ≥ +1,00 D, myopi som ≤ –0,25 DS.

    Resultat: 1 313 personer undersöktes, varav 1 271, mellan 6 och 92 år gamla, ingick i studien. Förekomsten av hyperopi var totalt 23,8% (som mest 39,8% hos kvinnor 66-92 år gamla, och som minst 10,7% hos kvinnor 6-19 år gamla), läskunnighet totalt var 81,7% (kvinnor 74,7%, män 90,7%). Det var något lägre läskunnighet bland hyperoper (78,1%) än bland myoper (83,2%) och emmetroper (82,7%).

    Slutsats: Bolivia verkar ha större förekomst av hyperopi än Asien och Europa. Hyperopi ökar med åldern, främst efter 50-årsåldern. Miljöfaktorn ser ut att ha viss betydelse.

  • 54213. Wohlfart, B.
    et al.
    Björck, S.
    Possnert, G.
    Lemdahl, Geoffrey
    Department of Quaternary Geology, Lund University, Tornav, 13, S-223 63 Lund.
    Brunnberg, L.
    Ising, J.
    Olsson, S.
    Svensson, N.-O.
    Problems of AMS dating the Swedish varved clays of the last glacial-interglacial transition and the potential and difficulties of calibrating Late Weichselian "absolute" chronologies.1993Ingår i: Boreas, ISSN 0300-9483, E-ISSN 1502-3885, Vol. 22, nr 2, s. 113-128Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The increasing focus on the chronology of environmental and climatic changes of the last glacial-interglacial transition has led to several independent attempts to try to calibrate the 14C time-scale beyond the Holocene. The Late Weichselian Gotiglacial varved clays of the Swedish Time Scale could potentially be used for this purpose. The reliability of the Swedish Time Scale is discussed as well as different ways of using the Swedish varved clays for calibrating the 14C chronology. The strategy and initial results from an ongoing calibration project are presented. They show clearly that, if the right strategy is adopted, varved clay may be dated by accelerator mass spectrometry (AMS) 14C measurement of terrestrial macrofossils. A Late Weichselian 'event stratigraphy', including the Vedde Ash fall-out, is established for south Scandinavia using three dating categories: clay varve measurements, terrestrial macrofossil measurement, and lake sediment (including aquatic mosses) measurements. It suggests that a 14C chronology based on terrestrial organic remains is not consistent with the traditional Late Weichselian chronostratigraphy based on lake-sediment samples, and that 'clay varve years' exceed 'terrestrial 14C years' by c. 900 years at the end of, and by 1100–1200 years at the beginning of the Younger Dryas Chronozone. Further back in time, the time-scales appear to converge. These results are compared with other recently published calibration studies.

  • 54214. Wohlfarth, B.
    et al.
    Björck, S.
    Holmqvist, B.
    Lemdahl, Geoffrey
    Dept Quaternary Geol, S-22363 Lund, Sweden.
    Ising, J.
    Ice recession and depositional environment in the Blekinge archipelago of the Baltic Ice Lake.1994Ingår i: GFF, ISSN 1103-5897, E-ISSN 2000-0863, Vol. 116, nr 1, s. 3-12Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Swedish varved clays, deposited in the former Baltic Ice Lake during the deglaciation, constitute an excellent tool to decipher the ice recession with annual precision. New clay varve diagrams from Blekinge, southern Sweden, enable to place the deglaciation of sites situated in northern Blekinge between the local varve years -39 to +77, which preliminary corresponds to 12,971-12,855 v.y. BP. Detailed and systematic investigations demonstrate, that plant macrofossils can be found in the varved clays, if suitable sites, close to the former shoreline of the Baltic Ice Lake are chosen. In Blekinge the coastline formed an archipelago-like landscape with small, deep, incised fjords and numerous islands similar to today's. In-wash of organic matter in near shore areas, commenced with the beginning of the Bolling warming peak (c. 12,800-12,700 v.y. BP) and is reflected by the relatively higher amount of macroscopic plant and animal remains. In varved clays deposited during the Older Dryas stadial (<12,700 v.y. BP) considerably less macroremains were recorded, probably due to less melt water out-flow and/or change in the vegetation.

  • 54215. Wohlfarth, B
    et al.
    Gaillard, Marie-Jose
    Högskolan i Kalmar, Naturvetenskapliga institutionen.
    Häberli, W
    Kelts, K
    Environment and Climate in Southwestern Switzerland during the Last Termination, 15-10 ka BP1994Ingår i: Quaternary Science Reviews, ISSN 0277-3791, E-ISSN 1873-457X, Vol. 13, nr 4, s. 361-394Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Various records from sites ranging in altitude between 372 and 2290 m along a NW-SE transect through SW Switzerland were compiled and correlated within well defined chrono- and biostratigraphic units. Deglaciation of lowland areas is estimated at ca. 15,000-14,000 BP (minimum age), while the lower part of the Rhone valley and the Jura Mountains may have become ice free later. A significant climatic warming is clearly indicated by several palaeoecological records at ca. 12,600 BP. The compiled data give no clear evidence of a cooler phase between 12,200-12,000 BP. Oxygen isotope data point to a slight and progressive decrease in the deltaO-18 values between ca. 12,500-11,000 BP, which is followed by a marked drop at 11,000 BP. A very distinct change in lithology, rock glacier development and in mollusc and vegetation records characterises many low and high altitude sites ca. 300 years later, at 10,700 BP. Between 11,000 and 10,000 BP oxygen isotope records seem to respond more rapidly to the climatic shifts than the biostratigraphical records. Possible explanations for these time-lags are discussed. Our compilation shows that further multidisciplinary research in key sites would provide more precise palaeoclimatological information, both qualitatively and quantitatively. Higher time resolution and quantitative estimates of climatic parameters are needed to evaluate in detail the mechanisms and consequences of these rapid climatic changes in SW Switzerland.

  • 54216. Wohlfarth, B.
    et al.
    Lemdahl, Geoffrey
    Högskolan i Kalmar, Naturvetenskapliga institutionen.
    Olsson, S.
    Persson, T.
    Snowball, I.
    Ising, J.
    Jones, V.
    Early Holocene environment on Bjørnøya (Svalbard) inferred from multidisciplinary lake sediment studies.1995Ingår i: Polar Research, ISSN 0800-0395, E-ISSN 1751-8369, Vol. 14, nr 2, s. 253-275Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Bjornoya, a small (178 km(2)) island situated between the mainland of Norway and southern Spitsbergen, provides the opportunity for the reconstruction of early Holocene terrestrial and limnic palaeoenvironments in the southwestern Barents Sea. The AMS C-14 dating technique, geochemical, mineral magnetic, micro- and macrofossil analyses were applied to sediments recovered from lake Stevatnet and the results are interpreted in terms of palaeoenvironmental conditions between 9800 and 8300 C-14 BP. After the disappearance of local glaciers before ca 9800 C-14 BP, the lake productivity increased rapidly at the same time as pioneer plant communities developed on soils which gradually became more stable. Insect data indicates that strong seasonal contrasts with mean July temperatures around 9 degrees C and mean January temperatures around -12 degrees C prevailed between 9500 and 8300 C-14 BP. These high summer temperatures, possibly as much as 4-5 degrees C higher than the present, favoured the development of a flora including Dryas and Angelica cf. archangelica. The enhanced freeze/thaw processes led to an increased erosion of minerogenic and organic material. After 8000 C-14 BP the temperatures may have gradually declined. The environmental reconstruction derived from our data set supports the conceptual insolation model which proposes maximum Holocene seasonality for the Northern Hemisphere at ca 9000 C-14 BP.

  • 54217.
    Wohlin, Claes
    et al.
    Blekinge Institute of Technology.
    Aybuke, Aurum
    University of New South Wales, Australia.
    Lefteris, Angelis
    Aristotle University of Thessaloniki, Greece.
    Phillips, Laura
    Macquarie Group, Australia.
    Dittrich, Yvonne
    IT University of Copenhagen, Denmark.
    Gorscheck, Tony
    Blekinge Institute of Technology.
    Grahn, Håkan
    Blekinge Institute of Technology.
    Henningson, Kennet
    Blekinge Institute of Technology.
    Kågström, Simon
    Net Insight AB.
    Low, Graham
    University of New South Wales, Australia.
    Rovegård, Per
    Factor10.
    Tomaszewski, Piotr
    ST-Ericsson.
    van Toorn, Christine
    University of New South Wales, Australia.
    Winter, Jeff
    Blekinge Institute of Technology.
    The success factors powering industry-academia collaboration2011Ingår i: IEEE Software, ISSN 0740-7459, E-ISSN 1937-4194, Vol. 29, nr 2, s. 67-73Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Collaboration between industry and academia supports improvement and innovation in industry and helps to ensure industrial relevance in academic research. This article presents an exploratory study of the factors for successful collaboration between industry and academia in software research.

  • 54218. Woin, P
    et al.
    Larsson, Per
    Department of Ecology, Limnology, University of Lund.
    Phthalate esters reduce predation efficiency of dragonfly larvae (Odonata; Aeshna)1987Ingår i: Bulletin of Environmental Contamination and Toxicology, ISSN 0007-4861, E-ISSN 1432-0800, Vol. 38, nr 2, s. 220-225Artikel i tidskrift (Refereegranskat)
  • 54219.
    Wojcik, Natalia A.
    et al.
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). Gdansk Univ Technol, Poland.
    Jonson, Bo
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET).
    Möncke, Doris
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). Natl Hellen Res Fdn, Greece.
    Polies, D.
    Natl Hellen Res Fdn, Greece.
    Kamitsos, E. I.
    Natl Hellen Res Fdn, Greec.
    Ghassemali, E.
    Jönköping University.
    Seifeddine, S.
    Jönköping University.
    Eriksson, M.
    Stockholm University.
    Ali, Sharafat
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET).
    Influence of synthesis conditions on glass formation, structure and thermal properties in the Na2O-CaO-P2O5 system doped with Si3N4 and Mg2018Ingår i: Journal of Non-Crystalline Solids, ISSN 0022-3093, E-ISSN 1873-4812, Vol. 494, s. 66-77Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Oxynitride phosphate glasses and glass-ceramics were prepared using new synthesis routes for phosphate glasses. Materials were melted from pre-prepared glass samples in the system Na-Ca-P-0 with addition of Mg and/or Si3N4 powders under different preparation conditions. The melting process was conducted at 1000-1500 degrees C either under air or nitrogen atmosphere to obtain materials with different nitrogen content. Their topography and structure were characterized by Confocal Microscopy, Scanning Electron Microscopy, X-ray powder diffraction and Raman and infrared spectroscopy techniques, while their chemical compositions were examined by Energy Dispersive X-ray spectroscopy (EDS). All materials prepared under nitrogen atmosphere were found to contain a relative low quantity of nitrogen and high amount of Nb leached from the crucible. The reaction with the Nb crucible was not previously observed for silicon-based oxynitride glasses. The synthesized materials form two groups: glasses and glass-ceramics. The first ones, were prepared under air and nitrogen atmospheres at temperatures up to 1400 degrees C, and were found to be amorphous and homogeneous. Raman and infrared spectroscopy measurements confirm the presence of amorphous phosphates in the synthesized materials. The samples of the second group were prepared at temperatures above 1400 degrees C and were found to be translucent and partially crystallized. They contain nanocrystallites of calcium and sodium phosphates including hydroxyapatite (HAp). The thermal properties of samples were studied by Differential Scanning Calorimetry (DSC). The obtained glass transition temperatures range from about 360 degrees C to 640 degrees C and exhibit high values for glass-ceramic materials. Stability is improved in the studied glass-ceramics because of the increased degree of network polymerization of the remaining glassy matrix. The approximate fragility index decreases two times for oxynitride materials compared to the primary glass. The synthesized new materials may be competitive to well-known bioactive phosphate glasses thanks to their improved stability by Mg, Si, N and Nb doping.

  • 54220.
    Wojcik, Natalia A.
    et al.
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET). Gdansk Univ Technol, Poland.
    Kupracz, P.
    Gdansk Univ Technol, Poland.
    Barczynski, R. J.
    Gdansk Univ Technol, Poland.
    Nonlinear electrical properties of glass-ceramics nanocomposites containing ferroelectric nanocrystallites of Bi2VO5.52018Ingår i: Solid State Ionics, ISSN 0167-2738, E-ISSN 1872-7689, Vol. 317, s. 7-14Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Nonlinear A.C. impedance measurements were conducted in the 50BiV-50SrBAlO nanocomposite as a function of frequency, temperature and A.C. voltage. This material is ferroelectric below temperature of 730 K, and above 730 K is a good ion-conductor. For this nanocomposite a low A.C. voltage of 1 V-rms, is enough to observe high nonlinearities. The origin of these nonlinear effects depends on the temperature and frequency. In the high temperature and low frequency region, the nonlinearities are due to interfacial processes. In the low temperatures and higher frequencies, the nonlinearities may be also correlated with ion-transport processes: hopping and blocking in glass matrix and phase boundaries. The ferroelectric properties of the Bi2VO5.5 nanocrystallites are also possible origin of nonlinear effects. However, their contribution into nonlinearities is weaker than from the other observed processes. It is shown that a decrease of the Bi2VO5.5 crystallites size from micro- to nanometers and introduction of additional structural disorder into material significantly decrease the real part of the third order electric susceptibility coefficient but does not influence the ratio of the third harmonic to the base conductivity. It is suggested that the ferroelectric nanoregions are single-domain and the nonlinearities derived from domain walls probably are not observed.

  • 54221.
    Woksepp, Hanna
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för medicin och optometri (MEO). Kalmar County Hospital.
    Individualized treatment and control of bacterial infections2017Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    Infectious diseases cause substantial morbidity and mortality, exacerbated by increasing antibiotic resistance. In critically ill patients, recent studies indicate a substantial variability in β-lactam antibiotic levels when standardized dosing is applied. New methods for characterizing nosocomial outbreaks of bacterial infections are needed to limit transmission. The goals of this thesis were to investigate new strategies towards individualized treatment and control of bacterial infections. 

    In Paper I we confirmed high variability in β-lactam antibiotic levels among intensive care unit (ICU) patients from southeastern Sweden, where 45 % failed to reach treatment targets (100 % fT>MIC). Augmented renal clearance and establishing the minimum inhibitory concentration of the bacteria were important for evaluating the risk of not attaining adequate drug levels. In Paper II a rapid ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) method for simultaneous quantification of 11 commonly used antibiotics was developed and tested in clinical samples. Performance goals (CV<15%) were reached. A microbiological method for quantification of β-lactam antibiotics in serum was developed in Paper III. The method could be important for hospitals without access to an LC-MS method. Paper IV and Paper V investigated ligation-mediated qPCR with high resolution melt analysis (LMqPCR HRMA), for transmission investigation of extended spectrum β-lactamase (ESBL)-producing E. coli and other common bacterial pathogens. Results comparable to the reference method (PFGE) could be achieved within one day in a closed system and confirmed a nosocomial outbreak in Kalmar County. In Paper VI whole genome sequencing followed by bioinformatic analysis resolved transmission links within a nosocomial outbreak due to improved discriminatory power compared to LMqPCR HRMA.

    The high proportion of ICU patients with insufficient β-lactam drug levels emphasizes the need for individualized treatment by therapeutic drug monitoring (TDM). TDM is enabled by a highly sensitive method, such as UPLC-MS/MS, but if unavailable, also by a microbial method. Molecular typing methods used for transmission investigation can detect nosocomial outbreaks. LMqPCR HRMA can be used for screening purposes. For enhanced resolution, whole genome sequencing should be used, but always together with a rigorous epidemiological investigation. 

  • 54222.
    Woksepp, Hanna
    et al.
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för medicin och optometri (MEO). Kalmar County Hospital.
    Hallgren, A.
    Linköping University.
    Borgström, S.
    Kalmar County Hospital.
    Kullberg, F.
    Central Hospital Växjö.
    Wimmerstedt, A.
    Central Hospital Växjö.
    Oscarsson, A.
    Linköping University ; Linköping University Hospital.
    Nordlund, P.
    Ryhov Hospital, Jönköping.
    Lindholm, M-L
    Bonnedahl, Jonas
    Kalmar County Hospital.
    Brudin, L.
    Kalmar County Hospital.
    Carlsson, B.
    Linköping University.
    Schon, T.
    Kalmar County Hospital ; Linköping University.
    High target attainment for beta-lactam antibiotics in intensive care unit patients when actual minimum inhibitory concentrations are applied2017Ingår i: European Journal of Clinical Microbiology and Infectious Diseases, ISSN 0934-9723, E-ISSN 1435-4373, Vol. 36, nr 3, s. 553-563Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Patients in the intensive care unit (ICU) are at risk for suboptimal levels of beta-lactam antibiotics, possibly leading to poor efficacy. Our aim was to investigate whether the actual minimum inhibitory concentration (MIC) compared to the more commonly used arbitrary epidemiological cut-off values (ECOFFs) would affect target attainment in ICU patients on empirical treatment with broad-spectrum beta-lactam antibiotics and to identify risk factors for not reaching target. In a prospective, multicenter study, ICU patients ae<yen>18 years old and treated with piperacillin/tazobactam, meropenem, or cefotaxime were included. Clinical and laboratory data were recorded. Serum trough antibiotic levels from three consecutive days were analyzed by liquid chromatography-mass spectrometry (LC-MS). The target was defined as the free trough concentration above the MIC (100% fT(> MIC)). MICECOFF was used as the target and, when available, the actual MIC (MICACTUAL) was applied. The median age of the patients was 70 years old, 52% (58/111) were males, and the median estimated glomerular filtration rate (eGFR) was 48.0 mL/min/1.73 m(2). The rate of patients reaching 100% fT > MICACTUAL was higher (89%, 31/35) compared to the same patients using MICECOFF (60%, p = 0.002). In total, 55% (61/111) reached 100% fT > MICECOFF. Increased renal clearance was independently associated to not reaching 100% fT > MICECOFF. On repeated sampling, > 77% of patients had stable serum drug levels around the MICECOFF. Serum concentrations of beta-lactam antibiotics vary extensively between ICU patients. The rate of patients not reaching target was markedly lower for the actual MIC than when the arbitrary MIC based on the ECOFF was used, which is important to consider in future studies.

  • 54223.
    Woksepp, Hanna
    et al.
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för medicin och optometri (MEO). Kalmar County Hospital.
    Ryberg, Anna
    Växjö Central Hospital.
    Berglind, Linda
    Region Jönköping County.
    Schön, Thomas
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för medicin och optometri (MEO). Kalmar County Hospital;Linköping University.
    Söderman, Jan
    Region Jönköping County.
    Epidemiological characterization of a nosocomial outbreak of extended spectrum -lactamase Escherichia coli ST-131 confirms the clinical value of core genome multilocus sequence typing2017Ingår i: Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS), ISSN 0903-4641, E-ISSN 1600-0463, Vol. 125, nr 12, s. 1117-1124Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Enhanced precision of epidemiological typing in clinically suspected nosocomial outbreaks is crucial. Our aim was to investigate whether single nucleotide polymorphism (SNP) analysis and core genome (cg) multilocus sequence typing (MLST) of whole genome sequencing (WGS) data would more reliably identify a nosocomial outbreak, compared to earlier molecular typing methods. Sixteen isolates from a nosocomial outbreak of ESBL E.coli ST-131 in southeastern Sweden and three control strains were subjected to WGS. Sequences were explored by SNP analysis and cgMLST. cgMLST clearly differentiated between the outbreak isolates and the control isolates (>1400 differences). All clinically identified outbreak isolates showed close clustering (2 allele differences), except for two isolates (>50 allele differences). These data confirmed that the isolates with >50 differing genes did not belong to the nosocomial outbreak. The number of SNPs within the outbreak was 7, whereas the two discrepant isolates had >700 SNPs. Two of the ESBL E.coli ST-131 isolates did not belong to the clinically identified outbreak. Our results illustrate the power of WGS in terms of resolution, which may avoid overestimation of patients belonging to outbreaks as judged from epidemiological data and previously employed molecular methods with lower discriminatory ability.

  • 54224.
    Woksepp, Hanna
    et al.
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för medicin och optometri (MEO).
    Ryberg, Anna
    Linköping University.
    Billström, Hanna
    Publ Hlth Agcy Sweden, Solna, Sweden.
    Hallgren, Anita
    Linköping University.
    Nilsson, Lennart E.
    Linköping University.
    Marklund, Britt-Inger
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för kemi och biomedicin (KOB).
    Olsson-Liljequist, Barbro
    Publ Hlth Agcy Sweden, Solna, Sweden.
    Schön, Thomas
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för medicin och optometri (MEO). Kalmar County Hospital ; Linköping university.
    Evaluation of High-Resolution Melting Curve Analysis of Ligation-Mediated Real-Time PCR, a Rapid Method for Epidemiological Typing of ESKAPE (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter Species) Pathogens2014Ingår i: Journal of Clinical Microbiology, ISSN 0095-1137, E-ISSN 1098-660X, Vol. 52, nr 12, s. 4339-4342Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A single-tube method, ligation-mediated real-time PCR high-resolution melt analysis (LMqPCR HRMA), was modified for the rapid typing of Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter spp. (ESKAPE) pathogens. A 97% agreement (60/62 isolates) was achieved in comparison to pulsed-field gel electrophoresis (PFGE) results, which indicates that LMqPCR HRMA is a rapid and accurate screening tool for monitoring nosocomial outbreaks.

  • 54225.
    Woksepp Åleheim, Elin
    Linnéuniversitetet, Fakultetsnämnden för hälsa, socialt arbete och beteendevetenskap, Institutionen för pedagogik, psykologi och idrottsvetenskap, PPI.
    Läraren som skapare av en lärandemiljö2010Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Uppsatsens syfte är att synliggöra ett klassrums lärandemiljö och den roll läraren har i denna utifrån ett interaktionistiskt perspektiv. För att nå upp till syftet gjordes därför en observation av en klasslärare i sin klassrumsundervisning. 

    Begreppet lärandemiljö reds ut utifrån en analysmodell där individen, aktiviteten och rummet tillsammans är komponenter som visar på mångsidigheten i begreppet. Skolans förutsättningar presenteras vad det gäller både fysisk och social miljö med fokus på lärarens roll.

    Resultatet visade på en social lärandemiljö präglad av en betoning på omsorg, kommunikation och delaktighet och hur dessa tre delar återspeglade sig på mötet mellan individerna i klassrummet, hur undervisningen bedrevs och den fysiska miljön. Resultatet kom också att visa på lärarens interaktion med andra pedagoger och hur denna präglades av ett hänsynstagande och olika form av samarbete.  Utifrån resultatet diskuteras hur stor roll läraren har i skapandet av lärandemiljön och till vilken grad den sociala miljön är beroende av den fysiska kontexten.

  • 54226.
    Wolanski, E
    et al.
    Australian Institute of Marine Science, Australia.
    Newton, A
    Universidade do Algarve, Portugal.
    Rabalais, N
    Louisiana Universities Marine Consortium, USA.
    Legrand, Catherine
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för biologi och miljö (BOM).
    Coastal Zone Management2013Ingår i: Reference Module in Earth Systems and Environmental Sciences / [ed] Scott A. Elias (editor in chief), Oxford: Elsevier, 2013Kapitel i bok, del av antologi (Övrigt vetenskapligt)
    Abstract [en]

    This article presents a scientific overview of the processes and the impact of environmental degradation of coastal waters due to human activities on the adjoining land. The direct effects range from eutrophication and harmful algal blooms, to hypoxia and anoxia. The indirect effects are more subtle and can also lead to the collapse of the ecosystem as in the case of coral reefs or seagrass meadows. Engineering solutions alone are not available to prevent this degradation that can only be reversed, or prevented, using a basin-wide ecohydrology approach.

  • 54227. Wolanski, E
    et al.
    Rabalais, N
    Newton, A
    Legrand, Catherine
    Högskolan i Kalmar, Naturvetenskapliga institutionen.
    Ecohydrology of coastal waters, boundaries and limitations2008Övrigt (Övrigt vetenskapligt)
  • 54228.
    Woldu Haddish, Eden
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för kemi och biomedicin (KOB).
    Autophagy-related protein expression in atrophic and hypertrophic denervated skeletal muscles2013Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 54229.
    Woldu Haddish, Haben
    Linnéuniversitetet, Fakulteten för Hälso- och livsvetenskap (FHL), Institutionen för kemi och biomedicin (KOB).
    Analys av C3a och sC5b-9 med sandwich-ELISA för att mäta komplementaktivering vid subklinisk borrelios2018Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Lyme borreliosis (LB) is caused by spirocheter of Borrelia burgdorferi sensu lato. There are different types of borrelia species and some differ in their ability to survive in the presence of the complement system. B. afzelii is complementresistant while B. garinii is complementsensitive. This is based on the ability to recruit immune regulators, such as factor H to the bacterial surface and prevent activation of the complement system. Some individuals may show anti-Borrelia antibodies without having developed clinical symptoms. This may indicate a more effective immune response against spirochetes. The aim of this study was to investigate differences in complement activation by measuring C3a and sC5b-9 with sandwich ELISA between two previously Borrelia-exposed groups; individuals with previous subclinical Lyme borreliosis (SB) and patients previously diagnosed with neuroborreliosis (NB), and a control group without signs of LB exposure. Samples analyzed in this study consisted of controls (Ctrl, n = 8st), SB (n = 60st) and NB (n = 22st). Plasma from the groups were activated with ACA1 and Lu59. To compare the relative increase between the groups, complement factor C3a and the soluble terminal complement complex, sC5b-9, were analyzed using sandwich-ELISA.The analysis of C3a and sC5b-9 showed higher activation with Lu59 than ACA1, which is consistent with previous studies. According to C3a-analysis, no significant differences were observed between the groups for neither ACA1 nor Lu59. According to sC5b-9-analysis, a significant difference between SB and Ctrl (p= 0,0081) for Lu59 was observed. Conclusion of the studie was that further studies are required to interpret how this complement activation affects LB from a clinical prespective.

  • 54230.
    Wolf, Annett
    Linnéuniversitetet, Universitetsförvaltningen. ETH, ETH Zentrum, CHN, CH-8092 Zurich, Switzerland.
    Determining the rate of change in a mixed deciduous forest monitored for 50 years2011Ingår i: Annals of Forest Science, ISSN 1286-4560, E-ISSN 1297-966X, Vol. 68, nr 3, s. 485-495Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Trees in two compartments of the mixed deciduous forest Draved Forest have been monitored regularly for 50 years. This data set was used to study the rate of change in forest structure and composition applying the Kolmogorov-Smirnov statistics, chi-square test for the goodness of fit, and principal component analysis. We also correlated the specific test statistics with other forest properties to elucidate the importance of various factors for the observed changes in forest structure. After 50 years, the still significant changes in the forest structure and species composition indicate that the compartments have not reached the state of an old growth forest. Although some measures indicated that the compartments were approaching this stage, other showed the opposite response and even an increasing rate of change. As the three statistical methods contributed in different ways, we recommend the combination of several statistical methods to assess changes in the forest structure.

  • 54231.
    Wolf, Annett
    Linnéuniversitetet, Universitetsförvaltningen. Forest Ecology, Institute of Terrestrial Ecosystems, Department of Environmental Science, ETH Zurich, Universitätsstrasse 16, CH-8092 Zurich, Switzerland.
    Estimating the potential impact of vegetation on the water cycle requires accurate soil water parameter estimation2011Ingår i: Ecological Modelling, ISSN 0304-3800, E-ISSN 1872-7026, Vol. 222, nr 15, s. 2595-2605Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    It is well known that vegetation dynamics at the catchment scale depends on the prevailing weather and soil moisture conditions. Soil moisture, however, is not equally distributed in space due to differences in topography, weather patterns, soil properties and the type and amount of vegetation cover. To elucidate the complex interaction between vegetation and soil moisture, the dynamic vegetation model LPJ-GUESS (Smith et al., 2001), which provides estimations of vegetation dynamics, but does not consider lateral water fluxes was coupled with the hydrological TOPMODEL (cf. Beven, 2001) in order to be able to evaluate the importance of these lateral fluxes. The new model LG-TM was calibrated and validated in two climatically different mountain catchments. The estimations of runoff were good, when monthly and weekly time scales were considered, although the low flow periods at winter time were somewhat underestimated. The uncertainty in the climate induced change vegetation carbon storage caused by the uncertainty in soil parameters was up to 3–5 kg C m−2 (depending on elevation and catchment), compared to the total change in vegetation carbon storage of 5–9 kg C m−2. Therefore accurate estimates of the parameters influencing the water holding capacity of the soil, for example depth and porosity, are necessary when estimating future changes in vegetation carbon storage. Similarly, changes in plant transpiration due to climatic changes could be almost double as high (88 mm m−2) in the not calibrated model compared to the new model version (ca 50 mm m−2 transpiration change). The uncertainties in these soil properties were found to be more important than the lateral water exchange between grid cells, even in steep topography at least for the temporal and spatial resolution used here.

  • 54232.
    Wolf, Annett
    Linnéuniversitetet, Universitetsförvaltningen. Department of Physical Geography and Ecosystem Analysis, Lund.
    Fifty year record of change in tree spatial patterns within a mixed deciduous forest2005Ingår i: Forest Ecology and Management, ISSN 0378-1127, E-ISSN 1872-7042, Vol. 215, nr 1-3, s. 212-223Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Ripley's K-function was used to investigate the changes in spatial pattern among trees in a semi-natural mixed deciduous forest in Denmark over 50 years, from 1948 to 2001. Trees larger than 10 cm diameter in breast height (dbh) were mapped at 10-year intervals in 16 blocks within two former compartments. At the start of the observation, trees were found to be regularly distributed at distances less than 10 m. This pattern changed with time in different ways, depending on tree density at the beginning of the recording. Tree density has a greater influence on the number of recruits than on the number of dead trees. New recruits were significantly aggregated and positively correlated with dead trees, which suggests that regeneration occurred in canopy gaps. Compartments with many new recruits therefore showed a change in pattern towards more random distribution or even towards aggregation. In blocks with high basal area and few recruits, the pattern changed only slightly. Past management was found to be important in generating the patterns of tree distribution.

  • 54233.
    Wolf, Annett
    et al.
    Linnéuniversitetet, Universitetsförvaltningen. Lund Univ, Dept Phys Geog & Ecosyst Anal, Lund, Sweden; Abisko Sci Res Stn, Abisko, Sweden.
    Blyth, Eleanor
    Ctr Ecol & Hydrol, Wallingford, Oxon, England.
    Harding, Richard
    Ctr Ecol & Hydrol, Wallingford, Oxon, England.
    Jacob, Daniela
    Max Planck Inst Meteorol, Hamburg, Germany.
    Keup-Thiel, Elke
    Max Planck Inst Meteorol, Hamburg, Germany.
    Goettel, Holger
    Max Planck Inst Meteorol, Hamburg, Germany.
    Callaghan, Terry
    Abisko Sci Res Stn, Abisko, Sweden; Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England.
    Sensitivity of an ecosystem model to hydrology and temperature2008Ingår i: Climatic Change, ISSN 0165-0009, E-ISSN 1573-1480, Vol. 87, nr 1-2, s. 75-89Artikel i tidskrift (Refereegranskat)
  • 54234.
    Wolf, Annett
    et al.
    Linnéuniversitetet, Universitetsförvaltningen.
    Callaghan, Terry V.
    Larson, Karin
    Future changes in vegetation and ecosystem function of the Barents Region2008Ingår i: Climatic Change, ISSN 0165-0009, E-ISSN 1573-1480, Vol. 87, nr 1-2, s. 51-73Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The dynamic vegetation model (LPJ-GUESS) is used to project transient impacts of changes in climate on vegetation of the Barents Region. We incorporate additional plant functional types, i.e. shrubs and defined different types of open ground vegetation, to improve the representation of arctic vegetation in the global model. We use future climate projections as well as control climate data for 1981-2000 from a regional climate model (REMO) that assumes a development of atmospheric CO(2)-concentration according to the B2-SRES scenario [IPCC, Climate Change 2001: The scientific basis. Contribution working group I to the Third assessment report of the IPCC. Cambridge University Press, Cambridge (2001)]. The model showed a generally good fit with observed data, both qualitatively when model outputs were compared to vegetation maps and quantitatively when compared with observations of biomass, NPP and LAI. The main discrepancy between the model output and observed vegetation is the overestimation of forest abundance for the northern parts of the Kola Peninsula that cannot be explained by climatic factors alone. Over the next hundred years, the model predicted an increase in boreal needle leaved evergreen forest, as extensions northwards and upwards in mountain areas, and as an increase in biomass, NPP and LAI. The model also projected that shade-intolerant broadleaved summergreen trees will be found further north and higher up in the mountain areas. Surprisingly, shrublands will decrease in extent as they are replaced by forest at their southern margins and restricted to areas high up in the mountains and to areas in northern Russia. Open ground vegetation will largely disappear in the Scandinavian mountains. Also counter-intuitively, tundra will increase in abundance due to the occupation of previously unvegetated areas in the northern part of the Barents Region. Spring greening will occur earlier and LAI will increase. Consequently, albedo will decrease both in summer and winter time, particularly in the Scandinavian mountains (by up to 18%). Although this positive feedback to climate could be offset to some extent by increased CO(2) drawdown from vegetation, increasing soil respiration results in NEE close to zero, so we cannot conclude to what extent or whether the Barents Region will become a source or a sink of CO(2).

  • 54235.
    Wolf, Annett
    et al.
    Linnéuniversitetet, Universitetsförvaltningen.
    Kozlov, Mikhail V.
    Callaghan, Terry V.
    Impact of non-outbreak insect damage on vegetation in northern Europe will be greater than expected during a changing climate2008Ingår i: Climatic Change, ISSN 0165-0009, E-ISSN 1573-1480, Vol. 87, nr 1-2, s. 91-106Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Background insect herbivory, in addition to insect outbreaks, can have an important long term influence on the performance of tree species. Since a projected warmer climate may favour insect herbivores, we use a dynamic ecosystem model to investigate the impacts of background herbivory on vegetation growth and productivity, as well as distribution and associated changes in terrestrial ecosystems of northern Europe. We used the GUESS ecosystem modelling framework and a simple linear model for including the leaf area loss of Betula pubescens in relation to mean July temperature. We tested the sensitivity of the responses of the simulated ecosystems to different, but realistic, degrees of insect damage. Predicted temperature increases are likely to enhance the potential insect impacts on vegetation. The impacts are strongest in the eastern areas, where potential insect damage to B. pubescens can increase by 4-5%. The increase in insect damage to B. pubescens results in a reduction of total birch leaf area (LAI), total birch biomass and birch productivity (Net Primary Production). This effect is stronger than the insect damage to leaf area alone would suggest, due to its second order effect on the competition between tree species. The model’s demonstration that background herbivory may cause changes in vegetation structure suggests that insect damage, generally neglected by vegetation models, can change predictions of future forest composition. Carbon fluxes and albedo are only slightly influenced by background insect herbivory, indicating that background insect damage is of minor importance for estimating the feedback of terrestrial ecosystems to climate change.

  • 54236.
    Wolf, Annett
    et al.
    Linnéuniversitetet, Universitetsförvaltningen. Forest Ecology, Institute of Terrestrial Ecosystems, Department of Environmental Science, ETH Zurich, Universitätsstr. 16, CH-8092 Zurich, Switzerland.
    Lazzarotto, Patrick
    Forschungsanstalt Agroscope Reckenholz-Tänikon ART, Reckenholzstrasse 191, CH-8046 Zürich, Switzerland.
    Bugmann, Harald
    Forest Ecology, Institute of Terrestrial Ecosystems, Department of Environmental Science, ETH Zurich, Universitätsstr. 16, CH-8092 Zurich, Switzerland.
    The relative importance of land use and climatic change in Alpine catchments2012Ingår i: Climatic Change, ISSN 0165-0009, E-ISSN 1573-1480, Vol. 111, nr 2, s. 279-300Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Carbon storage and catchment hydrology are influenced both by land use changes and climatic changes, but there are few studies addressing both responses under both driving forces. We investigated the relative importance of climate change vs. land use change for four Alpine catchments using the LPJ-GUESS model. Two scenarios of grassland management were calibrated based on the more detailed model PROGRASS. The simulations until 2100 show that only reforestation could lead to an increase of carbon storage under climatic change, whereby a cessation of carbon accumulation occurred in all catchments after 2050. The initial increase in carbon storage was attributable mainly to forest re-growth on abandoned land, whereas the stagnation and decline in the second half of the century was mainly driven by climate change. If land was used more intensively, i.e. as grassland, litter input to the soil decreased due to harvesting, resulting in a decline of soil carbon storage (1.2−2.9 kg C m–2) that was larger than the climate-induced change (0.8–1.4 kg C m−2). Land use change influenced transpiration both directly and in interaction with climate change. The response of forested catchments diverged with climatic change (11–40 mm increase in AET), reflecting the differences in forest age, topography and water holding capacity within and between catchments. For grass-dominated catchments, however, transpiration responded in a similar manner to climate change (light management: 23–32 mm AET decrease, heavy management: 29–44 mm AET decrease), likely because grassroots are concentrated in the uppermost soil layers. Both the water and the carbon cycle were more strongly influenced by land use compared to climatic changes, as land use had not only a direct effect on carbon storage and transpiration, but also an indirect effect by modifying the climate change response of transpiration and carbon flux in the catchments. For the carbon cycle, climate change led to a cessation of the catchment response (sink/source strength is limited), whereas for the water cycle, the effect of land use change remains evident throughout the simulation period (changes in evapotranspiration do not attenuate). Thus we conclude that management will have a large potential to influence the carbon and water cycle, which needs to be considered in management planning as well as in climate and hydrological modelling.

  • 54237.
    Wolf, Annett
    et al.
    Linnéuniversitetet, Universitetsförvaltningen. Department of Physical Geography and Ecosystem Analyses, Lund University, Sölvegatan 12, S-223 62 Lund, Sweden.
    Møller, P. F.
    Environmental History Research Group, Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark.
    Bradshaw, R. H. W.
    Environmental History Research Group, Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark.
    Bigler, J.
    Unit of Forestry, The Royal Veterinary and Agricultural University, Rolighedsvej 23, DK-1958 Frederiksberg C, Denmark.
    Storm damage and long-term mortality in a semi-natural, temperate deciduous forest2004Ingår i: Forest Ecology and Management, ISSN 0378-1127, E-ISSN 1872-7042, Vol. 188, nr 1-3, s. 197-210Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    1. Wind-damaged trees, following the severe storm of 1999, are compared with data from a 50-year monitoring of Draved Forest, Denmark, to assess differing causes of mortality through time in an unmanaged semi-natural forest. Species-specific mortality characteristics and the changing effects of tree size and growth rate (diameter increment) on mortality through time are also investigated. 2. Storm was found to be the major mortality factor affecting large trees in this forest. For smaller trees, competition was an important cause of death, as trees that were found standing dead had a slower growth rate (diameter increment) than survivors. 3. Individual species showed different mortality patterns. Betula died more often and Fagus less often than expected from their abundance. Betula, Fagus and Tilia were mainly wind-thrown, whereas for Alnus and Fraxinus, 50% of the mortality was observed as standing dead trees. 4. Both wind and competition are important mortality factors in Draved Forest. (C) 2003 Elsevier B.V. All rights reserved.

  • 54238.
    Wolf, Annett
    et al.
    Linnéuniversitetet, Universitetsförvaltningen.
    Møller, P. F.
    Bradshaw, R. H. W.
    Bigler, J.
    Storm damage and long-term mortality in a semi-natural, temperate deciduous forest2004Ingår i: Forest Ecology and Management, Vol. 188, nr 1-3, s. 197-210Artikel i tidskrift (Refereegranskat)
  • 54239.
    Wolff, Hannes
    Linnéuniversitetet, Fakultetsnämnden för humaniora och samhällsvetenskap, Institutionen för samhällsvetenskaper, SV.
    Socialdemokraternas valaffischer över 50 år: en bild av partiförändring?2011Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 54240.
    Wolff, Janik
    Linnéuniversitetet, Fakultetsnämnden för naturvetenskap och teknik, Institutionen för datavetenskap, fysik och matematik, DFM.
    IT-Security Investment Models2010Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 54241. Wolfram, Nicole
    et al.
    Rigby, Michael
    Frazzica, Rosa Guiseppa
    Kirch, Willhelm
    Bergman, Patrick
    Sjöström, Michael
    Di Mattia, Pasquale
    Häger, Cristiane
    Neumann, Grit
    Klein, Doreen
    Physical activity and nutrition-health information activities of the EU, WHO, European networks and national examples2007Ingår i: Journal of Public Health, Vol. 15, nr Supplement 1, s. S3-S53Artikel, forskningsöversikt (Refereegranskat)
    Abstract [en]

    Objective

    Many Health Information Activities related to nutrition and physical activity have been initiated during the past years by several institutions on the national and international level as well as by several European networks. A multitude of projects with different scopes and methodologies has arisen. This variety makes it necessary to bring the results of these activities into a coordinated framework. The report aims to give a structured overview on the availability of routine repeated or repeatable data on the health determinants nutrition and physical activity in European countries. An Inventory of Health Information Activities on physical activity and nutrition was built up, which summarises activities carried out by the European Commission, the WHO, various European Networks, as well as national examples. The Health Information Activities collected as national examples assess data for all countries belonging to the European Union up to 2006, the European Economic Area (EEA) and all Candidate countries. The Inventory considers activities which started in 1990 or later, which were still running or have been approved but not yet started.

    Method

    The report analyses institutional structures (WHO, European Commission, European Networks) as well as examples of health information activities at the national level. A network of European public health professionals identified available national health information activities and survey data, which were summarised in a structured online database.

    Results

    The results section presents activities in the field of health information on physical activity and nutrition of the European Commission (DG Sanco), the World Health Organisation (Europe) and various European networks. Furthermore, this section presents the analysis of the database which summarises health information activities in European countries. The database is freely accessible at the website of the Working Party. Additionally, the supplement provides a summary of Health Information Activities for each country in Country Profile Sheets.

    Conclusion

    The report provides a general overview on Health Information Activities related to physical activity and nutrition as well as a state-of-the-art investigation about available data in European countries. The concluding section of the report aims to recommend future Health Information actions which outline open issues.

  • 54242.
    Wolke, Anna
    Linnéuniversitetet, Universitetsbiblioteket.
    Digitala lärresurser: ska de' va' nå't?2015Ingår i: InfoTrend, ISSN 1653-0225, Vol. 68, nr 2, s. 14-23Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    Det här är min historia om hur mitt intresse för lärresurser började och hur det utvecklats till att även inkludera flipped classroom. Mina personliga erfarenheter och mina reflektioner kring att arbeta med digitala lärresurser avseende produktion, användning, undervisning. Samt en redovisning av en utvärdering med studenter som vi genomförde våren 2014 för att få ta del av deras synpunkter angående lärresurser.

  • 54243.
    Wolke, Daniel
    et al.
    Högskolan i Kalmar, Humanvetenskapliga institutionen.
    Tunås, Hannes
    Högskolan i Kalmar, Humanvetenskapliga institutionen.
    Depression hos män – att upptäcka och stödja2010Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Depression är en av de stora folksjukdomarna i Sverige och av män i västvärlden riskerar 20 % någon gång att drabbas av en depression som kräver professionell hjälp. Män med depression har ofta dolda symtom därför är det svårt att upptäcka manlig depression ute i samhället.  Syftet med denna litteraturstudie är att belysa hur depression kan ta sig uttryck hos män och hur vårdpersonal kan vara till stöd. Litteratursökningen har gjorts i Cinahl, PubMed och Psykinfo och resultatet grundas på åtta vetenskapliga artiklar, varv av fem är kvantitativa och tre är kvalitativa. Resultatet presenterades i två huvudkategorier, ”uttryck för depression hos män” och ”hjälp och stöd”. Resultatet tyder på att en manlig depression ger sig uttryck i form av flyktbeteende, missbruk, affektivt beteende och i värsta fall suicid. Vårdpersonalens viktigaste roll är att sätta sig in i mäns livsvärld för att kunna tyda symtom. Det är viktigt att arbeta med de deprimerade männens egna resurser och tidigare erfarenheter för att stärka deras självkänsla och självförtroende för framtiden. Kvalitativa studier för att ytterligare fastställa begreppet manlig depression. En förändring i DSM-IV kriterierna behövs för att i framtiden lättare kunna diagnostisera män med depression.

  • 54244.
    Wolke, Louise
    et al.
    Linnéuniversitetet, Fakulteten för konst och humaniora (FKH), Institutionen för medier och journalistik (MJ).
    Widell, Desirée
    Linnéuniversitetet, Fakulteten för konst och humaniora (FKH), Institutionen för medier och journalistik (MJ).
    A watchdog on the loose: A qualitative study of the journalistic profession inthe UK after the phone hacking scandal2015Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
  • 54245.
    Wollak, Birte
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för bygg- och energiteknik (BE).
    Determination of the methane potential of blue mussels2013Självständigt arbete på grundnivå (kandidatexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The aim of this study was to evaluate the methane potential of 35 kg of blue mussels in a batch amanaerobic two-stage dry digestion system (pilot-scale), which consists of aleach bed reactor (LB) and an up-flow anaerobic sludge blanket reactor (UASB). We monitored the process daily by measuring temperature, pH, COD, VFA, NH4+ gas flow rate and gas content. The temperature was approximately 30 C in the LB and 36 C in the UASB reactor. The applied OLR was 1.5 g COD/l*d. After 37 days process run, we obtained a total methamne yield of 0.64 Nm3 respectively 0.29 Nm3/kg VS, of that 70% in the LB reactor and 30% in the UASB reactor.

  • 54246.
    Wollak, Birte
    et al.
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET).
    Forss, Jörgen
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET).
    Welander, Ulrika
    Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET).
    Evaluation of blue mussels (Mytilus edulis) as substrate for biogas production in Kalmar County (Sweden)2018Ingår i: Biomass and Bioenergy, ISSN 0961-9534, E-ISSN 1873-2909, Vol. 111, s. 96-102Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Baltic Sea is an over-fertilized inland sea; the blue mussels have potential to absorb nutrients as well as being a source of renewable energy in the form of biogas. The aim of this study was to evaluate technology to utilize blue mussels for biogas production in a pilot scale. Blue mussels (Mytilus edulis) were anaerobically digested in a two-stage digestion process (430 L), consisting of a percolation bed and an up-flow anaerobic sludge blanket reactor. Frozen mussels with shells were placed in the percolation bed and digestion was performed at 36 oC during 37 days. The methane potential achieved with this technique was 310 L kg-1 volatile solid substances (273.15 K, 101.3 kPa). This result suggests that blue mussels can be efficiently digested in a larger scale and have the potential of contributing to a sustainable energy mix in the Baltic region and at the same time decrease the eutrophication of the Baltic Sea.  No addition of nutrients and no pretreatment of the mussels (peeling) were needed.

  • 54247.
    Wollentz, Gustav
    Linnéuniversitetet, Fakultetsnämnden för humaniora och samhällsvetenskap, Institutionen för kulturvetenskaper, KV.
    Att begravas vid gårdagens sida: Återbruket under bronsåldern på Öland samt i Falbygden i relation till det i Mysinge gånggrift2012Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    This essay is focused on the re-use during the Bronze Age of the Stone Age passage grave RAÄ 85 in Mysinge, Öland. To increase the knowledge of the phenomena of re-use in general and that which occurred in Mysinge passage grave in particular I’ve looked at other forms of re-use on Öland and the re-use of passage graves in Falbygden. The research has been limited to the Bronze Age. My goal has been to see what this might tell us about the relationship people during the Bronze Age had towards the abstract subject of “non-existence”, in other words death.

    The research clearly shows that Mysinge passage grave is the oldest grave that were in use during the Bronze Age as a grave, of those known to us, with 1/3 of its dated burials dated to the first half of the Bronze Age and the earliest to early Neolithic. This makes the other three megalithic tombs in the area very interesting since none of them has been excavated. The other forms of re-use of graves that were observed in Öland during the Bronze Age were all later covered by a cairn or a stone packing of some sorts. This most often occurred during the late Bronze Age. However, subsequent burials continued after the construction of the cairn/stone packing throughout the Bronze Age and in most cases into the Iron Age. The cairns/stone packings have a lot in common with the entrance cairn at Mysinge passage grave which also seems to have been constructed during the late Bronze Age. However, while cairns/stone packings mark endings of something they at the same time are monuments of today and are continually being used as a grave (but now according to local burial customs). Entrance cairns on the other hand first and foremost mark endings of something, even though these endings are most likely meant to be remembered.

    None of the passage graves analysed in this essay in Falbygden indicate the same use of the chamber as Mysinge passage grave. With a few exceptions (Rössberga Rör and Norra Lundby 41) the chamber seems to generally stop being used during Late Neolithic and during the Bronze Age and Iron Age secondary burials in the surrounding mound is instead common. However, it mainly seems to occur during the late Bronze Age and into the Iron Age. Not a single grave in the mound indicate a early Bronze Age date.

    It is clear that the past often had an important role in the relationship to death and burials during the Bronze Age.

  • 54248.
    Wollentz, Gustav
    Linnéuniversitetet, Fakulteten för konst och humaniora (FKH), Institutionen för kulturvetenskaper (KV).
    De stenbundna skeppen i trädens skugga: En studie kring skeppsformade monument från yngre bronsålder på Öland2013Självständigt arbete på avancerad nivå (magisterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Ship formed monuments from the Late Bronze Age on the island of Öland, southeast Sweden, have never been thoroughly dealt with in previous research, despite the fact that the region is suggested to have had a key-role in maritime trade networks. This thesis aims to address the ship formed monuments on Öland in relationship to the monuments in northern Småland and the island of Gotland. My goal is to discuss how the ship symbolism was practised during the Late Bronze Age in Scandinavia from a new perspective. I also aim to shed new light on the Bronze Age culture on Öland. I show that the ship formed monuments on Öland mark important maritime routes in the landscape leading to the core areas in the Late Bronze Age. These routes are not only linked to the trade which took place, but also to the landscape it self. I argue that the maritime movement in the landscape has helped to create and re-create the cosmology. Thus, the symbolic and practical function of the ship is tied together. Furthermore, I show that the memory connected to a mythological past has played a crucial role in the rituals leading up to the building of the monument. By integrating a circular view of time while interpreting the rituals instead of a linear one, I argue that this can be understood as a way of transforming the soul for rebirth. 

  • 54249.
    Wollentz, Gustav
    Linnéuniversitetet, Fakultetsnämnden för humaniora och samhällsvetenskap, Institutionen för kulturvetenskaper, KV.
    To be buried inside a long-forgotten world: Studying the reuse of passage graves wearing "Bronze Age glasses"2012Ingår i: Current Swedish Archaeology, ISSN 1102-7355, Vol. 20, s. 169-202Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The theories presented about the reuse of Neolithic monuments during the Bronze Age in Scandinavia are mainly universal, i.e. applicable to all periods during prehistory. I argue that there is no point in isolating reuse as something separate from society. The focus of my study is the Mysinge passage grave on the is- land of Öland. I have also studied the reuse of other graves on Öland and of passage graves in Falbygden. I propose that the passage grave was linked to the un- derworld and that some of those buried in the cham- ber of Mysinge during the Bronze Age were people travelling by sea.

  • 54250.
    Wollheim, Sebastian
    et al.
    Linnéuniversitetet, Fakulteten för teknik (FTK), Sjöfartshögskolan (SJÖ).
    Eskil, Björklund
    Linnéuniversitetet, Fakulteten för teknik (FTK), Sjöfartshögskolan (SJÖ).
    Val av utbildning inom sjöfarten: En kvalitativ studie om sjöbefälsstudenters utbildningsval2018Självständigt arbete på grundnivå (yrkesexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Att välja en eftergymnasial utbildning kan vara svårt då det är många faktorer som spelar in. När väl beslutet är taget kan ändå en viss osäkerhet kring utbildningsvalet förekomma. Syftet med studien är att undersöka hur sjöbefälsstudenter resonerar kring sitt val av utbildning och hur säkra de känner sig med sitt val vid ansökan. Studien undersöker också hur säkra de känner sig med sitt utbildningsval efter tre och ett halvt år på utbildningen. Den metod som används i examensarbetet bygger på en kvalitativ studie i form av semi-strukturerade intervjuer. Respondenterna i intervjuerna gick sista året på Sjöfartshögskolan i Kalmar. Resultatet visar att det främsta resonemanget till valet av utbildningen är det egna intresset följt av den sammanhängande ledigheten som yrket förser. När det gäller hur säkra respondeterna kände sig på sin ansökan varierade resultatet, dock kände den äldre individen i undersökningen sig väldigt trygg med sitt val. Tryggheten hos respondenterna kring sitt val har också varierat under utbildningens gång.

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