| 1. |
- Abraham, Getahun Yacob
(author)
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Education for Democracy? : Life Orientation: Lessons on Leadeship Qualities and Voting in South African Comprehensive Schools
- 2010
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Doctoral thesis (other academic/artistic)abstract
- This study takes as its starting point how teachers understand, interpret and teach social development aspects of Life Orientation in South African comprehensive schools. The specific focus is on lessons on leadership qualities and voting for third grade learners in four schools, each dominated by either Black, Coloured, White or mixed groups of learners. Field work with an ethnographic approach and a qualitative strategy was used to gain access to empirical data. Policy and curriculum documents, guidelines and textbooks were used. Classroom observations in four classes and interviews with 14 third grade teachers were conducted. Theoretical concepts of construction, deconstruction and reconstruction are applied. Ulf P Lundgren’s Frame Factor Theory is used to study school organization. Basil Bernstein’s Pedagogical Devices are considered when examining the different levels of pedagogical activities. To be a teacher in South Africa one needs to attend at least two years of teacher education after completing high school. Teachers in the classes studied underwent their teacher education during apartheid years. Due to limited in-service training, they sometimes experience problems of understanding and interpreting the learning area, which they usually tackle by consulting documents, colleagues or school authorities. The learners’ understanding varied based on their family background and type of school they attended. There were enormous differences in material, financial and organisational resources between classes and schools. The resources for teaching leadership qualities and voting were not, however, different between the classes. The lessons were teacher dominated and direct transmission was used as a method. The way teachers facilitated the lesson on leadership qualities and voting varied but all showed some democratic shortcomings. Apart from answering questions, learners were neither invited nor encouraged to participate to further their understanding of the theme. Limited aspects of leadership qualities were discussed, individual leaders’ roles were emphasised and the teachers picked candidates for class leaders in three of the classes. It was also evident that the class environments were not suitable for critical or creative thinking and democratic upbringing. The schools reproduced norms, values, languages and cultures of the different groups. Officially, teachers emphasised the common national South African identity. This emphasis on national identity could disguise the injustice some groups experience in society.
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| 2. |
- Abrahamsen Grøndahl, Vigdis, 1964-
(author)
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Patients’ perceptions of actual care conditions and patient satisfaction with care quality in hospital
- 2012
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Doctoral thesis (other academic/artistic)abstract
- There are theoretical and methodological difficulties in measuring the concepts of quality of care and patient satisfaction, and the conditions associated with these concepts. A theoretical framework of patient satisfaction and a theoretical model of quality of care have been used as the theoretical basis in this thesis. Aim. The overall aim was to describe and explore relationships between person-related conditions, external objective care conditions, patients’ perceptions of quality of care, and patient satisfaction with care in hospital. Methods. Quantitative and qualitative methods were used. In the quantitative study (I-III), 528 patients (83.7%) from eight medical, three surgical and one mixed medical/surgical ward in five hospitals in Norway agreed to participate (10% of total discharges). Data collection was conducted using a questionnaire comprising four instruments: Quality from Patients’ Perspective (QPP); Sense of Coherence scale (SOC); Big Five personality traits – the Single-Item Measures of Personality (SIMP); and Emotional Stress Reaction Questionnaire (ESRQ). In addition, questions regarding socio-demographic data and health conditions were asked, and data from ward statistics were included. Multivariate statistical analysis was carried out (I-III). In the qualitative study 22 informants were interviewed (IV). The interviews were analysed by conventional content analysis. Main findings. Patients’ perceptions of quality of care and patient satisfaction ranged from lower to higher depending on whether all patients or groups of patients were studied. The combination of person-related and external objective care conditions explained 55% of patients’ perceptions of quality of care (I). 54.7% of the variance in patient satisfaction was explained, and the person-related conditions had the strongest impact, explaining 51.7% (II). Three clusters of patients were identified regarding their scores on patient satisfaction and patients’ perceptions of quality of care (III). One group consisted of patients who were most satisfied and had the best perceptions of quality of care, a second group of patients who were less satisfied and had better perceptions, and a third group of patients who were less satisfied and had the worst perceptions. The qualitative study revealed four categories of importance for patients’ satisfaction: desire to regain health, need to be met in a professional way as a unique person, perspective on life, and need to have balance between privacy and companionship (IV). Conclusions. Patients’ perceptions of quality of care and patient satisfaction are two different concepts. The person-related conditions seem to be the strongest predictors of patients’ perceptions of quality of care and patient satisfaction. Registered nurses need to be aware of this when planning and conducting nursing care. There is a need of guidelines for handling over‑occupancy, and of procedures for emergency admissions on the wards. The number of registered nurses on the wards needs to be considered. Healthcare personnel must do their utmost to provide the patients with person‑centred care.
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| 3. |
- Ahlzén, Rolf, 1950-
(author)
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Why should physicians read? : Understanding clinical judgement and its relation to literary experience
- 2010
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Doctoral thesis (other academic/artistic)abstract
- Is literary experience of any practical relevance to the clinician? This is the overall question addressed by this investigation, which starts by tracing the historical roots of scientific medicine. These are found to be intimately linked to a form of rationality associated with the scientific revolution of the 17th century and with “modernity”. Medical practice, however, is dependent also on another form of rationality associated with what Stephen Toulmin calls “the epistemology of the biographical”. The very core of clinical medicine is shown to be the clinical encounter, an interpretive meeting where the illness experience is at the centre of attention. The physician can reach the goals of medicine only by developing clinical judgement. Clinical judgement is subjected to close analysis and is assumed to be intimately connected to the form of knowledge Aristotle called phronesis. In order to explore how literature – drama, novels, poetry – may be related to clinical judgement, a view of literature is presented that emphasizes literature as an invitation to the reader, to be met responsibly and responsively. Literature carries a potential for a widened experience, for a more nuanced perception of reality – and this potential is suggested to be ethically relevant to the practice of medicine. The “narrative rationality” of a literary text constitutes a complement to the rationality pervading scientific medicine. The final step in my analysis is a closer exploration of the potential of the literary text to contribute to the growth of clinical judgement, in relation to the challenges of everyday clinical work. Some of the conditions that may facilitate such growth are outlined, but it is also shown that full empirical evidence for the beneficial effects of reading on the clinician reader is beyond reach.
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| 4. |
- Alfredsson, Stefan, 1976-
(author)
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A Cross-Layer Perspective on Transport Protocol Performance in Wireless Networks
- 2012
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Doctoral thesis (other academic/artistic)abstract
- Communication by wireless technologies has seen a tremendous growth in the last decades. Mobile phone technology and wireless broadband solutions are rapidly replacing the last-hop wireline connectivity for telephones and Internet access. Research has, however, shown that Internet traffic can experience a performance degradation over wireless compared to wired networks. The inherent properties of radio communication lead to a higher degree of unreliability, compared to communication by wire or fiber. This can result in an increased amount of transmission errors, packet loss, delay and delay variations, which in turn affect the performance of the main Internet transport protocols TCP and UDP. This dissertation examines the cross-layer relationship between wireless transmission and the resulting performance on the transport layer. To this end, experimental evaluations of TCP and UDP over a wireless 4G downlink system proposal are performed. The experiment results show, in a holistic scenario, that link-level adaptive modulation, channel prediction, fast persistent link retransmissions, and channel scheduling, enables the transport protocols TCP and UDP to perform well and utilize the wireless link efficiently. Further, a novel approach is proposed where a modified TCP receiver can choose to accept packets that are corrupted by bit errors. Results from network emulation experiments indicate that by accepting and acknowledging even small amounts of corrupted data, a much higher throughput can be maintained compared to standard TCP.
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| 5. |
- Algervik, Robert, 1981-
(author)
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Embedding Theorems for Mixed Norm Spaces and Applications
- 2010
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Doctoral thesis (other academic/artistic)abstract
- This thesis is devoted to the study of mixed norm spaces that arise in connection with embeddings of Sobolev and Besov type spaces. We study different structural, integrability, and smoothness properties of functions satisfying certain mixed norm conditions. Conditions of this type are determined by the behaviour of linear sections of functions. The work in this direction originates in a paper due to Gagliardo (1958), and was further developed by Fournier (1988), by Blei and Fournier (1989), and by Kolyada (2005). Here we continue these studies. We obtain some refinements of known embeddings for certain mixed norm spaces introduced by Gagliardo, and we study general properties of these spaces. In connection with these results, we consider a scale of intermediate mixed norm spaces, and prove intrinsic embeddings in this scale. We also consider more general, fully anisotropic, mixed norm spaces. Our main theorem states an embedding of these spaces to Lorentz spaces. Applying this result, we obtain sharp embedding theorems for anisotropic Sobolev-Besov spaces, and anisotropic fractional Sobolev spaces. The methods used are based on non-increasing rearrangements, and on estimates of sections of functions and sections of sets. We also study limiting relations between embeddings of spaces of different type. More exactly, mixed norm estimates enable us to get embedding constants with sharp asymptotic behaviour. This gives an extension of the results obtained for isotropic Besov spaces by Bourgain, Brezis, and Mironescu, and for anisotropic Besov spaces by Kolyada. We study also some basic properties (in particular the approximation properties) of special weak type spaces that play an important role in the construction of mixed norm spaces, and in the description of Sobolev type embeddings. In the last chapter, we study mixed norm spaces consisting of functions that have smooth sections. We prove embeddings of these spaces to Lorentz spaces. From this result, known properties of Sobolev-Liouville spaces follow.
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| 6. |
- Almlöf Ambjörnsson, Heléne, 1968-
(author)
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Mercerization and Enzymatic Pretreatment of Cellulose in Dissolving Pulps
- 2013
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Doctoral thesis (other academic/artistic)abstract
- This thesis deals with the preparation of chemically and/or enzymatically modified cellulose. This modification can be either irreversible or reversible. Irreversible modification is used to prepare cellulose derivatives as end products, whereas reversible modification is used to enhance solubility in the preparation of regenerated cellulose.The irreversible modification studied here was the preparation of carboxymethyl cellulose (CMC) using extended mercerization of a spruce dissolving pulp. More specifically the parameters studied were the effect of mercerization at different proportions of cellulose I and II in the dissolving pulp, the concentration of alkali, the temperature and the reaction time. The parameters evaluated were the degree of substitution, the filterability and the amount of gel obtained when the resulting CMC was dissolved in water. Molecular structures of CMC and its gel fractions were analysed by using NIR FT Raman spectroscopy. It was found that the alkali concentration in the mercerization stage had an extensive influence on the subsequent etherification reaction. FT Raman spectra of CMC samples and their gel fractions prepared with low NaOH concentrations (9%) in the mercerization stage indicated an incomplete transformation of cellulose to Na-cellulose before carboxymethylation to CMC. Low average DS values of the CMC, i.e. between 0.42 and 0.50 were obtained. Such CMC dissolved in water resulted in very thick and semi solid gum-like gels, probably due to an uneven distribution of substituents along the cellulose backbone. FT Raman spectra of CMC samples and their gel fractions mercerized at higher alkaline concentration, i.e. 18.25 and 27.5% in the mercerization stage, indicated on the other hand a complete transformation of cellulose to Na-cellulose before carboxymethylation to CMC. Higher average DS values of the CMC, i.e. between 0.88 and 1.05 were therefore obtained. When dissolved in water such CMC caused gel formation especially when prepared from dissolving pulp with a high fraction of cellulose II.The reversible modification studied was the dissolution of cellulose in NaOH/ZnO. Here the effect of enzyme pretreatment was investigated by using two mono-component enzymes; namely xylanase and endoglucanase, used in consecutive stages. It was found that although the crystallinity and the specific surface area of the dissolving pulp sustained minimal change during the enzymatic treatment; the solubility of pulp increased in a NaOH/ZnO solution from 29% for untreated pulp up to 81% for enzymatic pretreated pulp.
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| 7. |
- Alvinius, Aida, 1979-
(author)
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Bridging Boundaries in the Borderland of Bureaucracies : Individual Impact on Organisational Adaption to Demanding Situations in Civil and Military Contexts
- 2013
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Doctoral thesis (other academic/artistic)abstract
- The purpose of this thesis is to reach a deeper understanding of how boundary spanners are bridging boundaries between uniformed bureaucratic organisations and their environment, characterised by demanding conditions.The main part of this thesis is based upon empirical data gathered through 71 interviews with Swedish civil and military informants from several uniformed organisations. Four articles have been included in this thesis in order to address the overarching aim.The results show that boundary spanners are crucial to the adaption of uniformed organisations to demanding conditions. A number of aspects that are included in the process of organisational adaption have been identified. One of the tasks is to balance between structuring and improvisation where much is at stake. The other task is to create confidence among the involved actors and contribute in different ways to create a sense of symmetry between partners. Finally, the third task for boundary spanners is to recognise improvised roles such as spontaneous links in order to maintain stressful conditions and bridge a gap in the bureaucratic organisation. The present thesis contributes to sociological theory of emotions, disaster management and military studies through a common denominator, namely the demanding context. Taken together, the findings increase awareness of how organisations act towards their environments and how individuals, especially boundary spanners, adapt the organisation to its environment. For leaders and managers, it is important to make decisions, provide mandates and authorisation, as well as invest confidence in boundary spanners. The hierarchical chain may remain in existence, but it can be made shorter and more transparent through this kind of knowledge.
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| 8. |
- Andersén, Annelie, 1977-
(author)
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Ett särskilt perspektiv på högre studier? : Folkhögskoledeltagares sociala representationer om högskola och universitet
- 2011
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Doctoral thesis (other academic/artistic)abstract
- Avhandlingen syftar till att undersöka folkhögskoledeltagares sociala representationer om högskola och universitet. Enligt teorin om sociala representationer är folkhögskoledeltagarnas sociala representationer om högskola och universitet något som skapas socialt och förändras beroende på deltagarnas erfarenheter av högskola och universitet. Avhandlingen syftar också till att undersöka dessa sociala representationers ursprung och framväxt, liksom om de har påverkats av andra sociala representationer exempelvis dem om folkhögskolans särart. För att identifiera folkhögskoledeltagarnas sociala identitet och sociala representationer har jag använt mig av empiriska data insamlat genom fria associationer och intervjuer med folkhögskoledeltagare och före detta folkhögskoledeltagare. För att undersöka representationernas ursprung har jag genomfört en dokumentstudie på folkhögskolelärarnas tidskrift. Resultaten visar att folkhögskolans företrädare genom hela folkhögskolans historia har förhållit sig till två huvudidéer, den om folkhögskolans särart och den om att folkhögskolan är en institution som anpassar sig efter det omkringliggande samhället och dess krav. Dessa båda idéer förklarar varför olika sociala identiteter och olika sociala representationer existerar bland folkhögskoledeltagarna. Grundidén att folkhögskolan har en särart leder till representationer om folkhögskolan som ett alternativ till annan utbildning och högskola och universitet som något som inte är likt folkhögskola. Den andra grundläggande idén om folkhögskolan som en institution som ständigt anpassar sig leder till representationer om folkhögskolan som en andra chans och högskolan som mål.
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| 9. |
- Anselmo, Ana Sofia, 1980-
(author)
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Materials aspects in spin-coated films for polymer photovoltaics
- 2013
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Doctoral thesis (other academic/artistic)abstract
- Polymer-based photovoltaics have the potential to contribute to boosting photovoltaic energy conversion overall. Besides allowing large-area inexpensive processing, polymeric materials have the added benefit of opening new market applications for photovoltaics due to their low-weight and interesting mechanical properties. The energy conversion efficiency values of polymer photovoltaics have reached new record values over the past years. It is however crucial that stability issues are addressed together with efficiency optimization. Understanding fundamental materials aspects is key in both areas.In the work presented in this thesis, the morphology of polymer:fullerene films and its influence on device performance was studied, as well as the effect of light exposure on the surface of fullerene films. Several polyfluorene copolymers were used for the morphology studies, where the effects of changing spin-coating solvent and of side chain engineering were investigated with dynamic secondary ion mass spectrometry (dSIMS) and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy. Polymer-enriched surfaces were found in all blend films, even in the cases with homogeneous distributions in the bulk. Side chain engineering of the polymer led to gradual changes in the compositional variations perpendicular to the surface, and to slight variations in the photocurrent. The electronic structure of the fullerene derivative PCBM was studied in detail and the spectroscopic fingerprint of the materials was analysed by comparison with theoretically simulated spectra. Photo-stability studies done in air showed that the surface of fullerene films underwent severe damages at the molecular level, which is evident from changes in the valence band and X-ray absorption spectra. These changes were explained by transitions from sp2-type to sp3 hybridization of the carbon atoms in the cage that resulted in the destruction of the fullerene cage.
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| 10. |
- Arnesen, Trine, 1969-
(author)
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Are they ready for this? : Experiences on implementing educational behavior-analytic interventions in Norwegian kindergartens
- 2014
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Doctoral thesis (other academic/artistic)abstract
- This thesis describes an investigation into experiences connected to the implementation of educational behavior-analytic interventions (ABA) for children with autism in kindergartens. The research questions and the methodological choices in this investigation evolved based on new experiences over the course of the research project. Three sub-studies were conducted: a single case study on the implementation of ABA teaching programs specifically targeting joint attention skills for children with autism in kindergartens (Study 1); a questionnaire survey on the experiences of ABA supervisors in implementing ABA in kindergartens (Study 2); and an interview study on the experiences of ABA teachers in implementing ABA in kindergartens (Study 3). During Study 1, it appeared that the teaching intensity of the targeted ABA teaching programs varied largely from what was initially planned for all four of the participating children. Under those conditions, the learning outcomes of the children also varied. With regard to Study 2, the survey data obtained from 29 ABA supervisors indicated that many children with autism who receive ABA in Norwegian kindergartens do not receive the number of teaching hours being planned for them. There also seems to be quite a large number of kindergartens that lack teaching teams and who receive supervision less than what is generally recommended to obtain the optimal outcome from ABA. With regard to Study 3, the interview data obtained from 10 ABA teachers illustrated how implementation factors such as compatibility, complexity, client responsiveness, and supervision can be manifested when ABA is implemented in the kindergarten. A main finding was that in some cases there seem to be conflicting opinions within the kindergarten about whether ABA is right for the child, something that was interpreted to reflect a conflict between the categorical and the relational perspectives of special education.
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