| 1. |
- Johansson, Helena, 1971-
(författare)
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Mathematical Reasoning in Physics Tests : Requirements, Relations, Dependence
- 2013
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- By analysing and expanding upon mathematical reasoning requirements in physics tests, this licentiate thesis aims to contribute to the research studying how students’ knowledge in mathematics influence their learning of physics. A sample of physics tests from the Swedish National Test Bank in Physics was used as data, together with information of upper secondary students’ scores and grades on the tests. First it was decided whether the tasks in the tests required mathematical reasoning at all and if they did, that reasoning was characterised. Further, the relation between students’ grades and mathematical reasoning requirements was examined. Another aim in this thesis is to try out if the Mantel-Haenszel procedure is an appropriate statistical method to answer questions about if there is a dependence between students’ success on different physics tasks requiring different kinds of mathematical reasoning. The results show that 75% of the tasks in the physics tests require mathematical reasoning and that it is impossible to pass six out of eight tests without mathematical reasoning. It is also revealed that it is uncommon that a student gets a higher grade than Pass without solving tasks that require the student to come up with not already familiar solutions. It is concluded that the Mantel-Haenszel procedure is sensitive to the number of students each teacher accounts for. If there are not too few students, the procedure can be used. The outcome indicates that there is a dependence between success on tasks requiring different kinds of reasoning. It is more likely that a student manages to solve a task that requires the produce of new reasoning if the student has solved a task that is familiar from before.
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| 2. |
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| 3. |
- Bergvall, Olof
(författare)
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Cohomology of the moduli space of curves of genus three with level two structure
- 2014
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In this thesis we investigate the moduli space M3[2] of curves of genus 3 equipped with a symplectic level 2 structure. In particular, we are interested in the cohomology of this space. We obtain cohomological information by decomposing M3[2] into a disjoint union of two natural subspaces, Q[2] and H3[2], and then making S7- resp. S8-equivariantpoint counts of each of these spaces separately.
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| 4. |
- Blackman, Corey
(författare)
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Evaluation of a thermally driven heat pump for solar heating and cooling applications
- 2015
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Exploiting solar energy technology for both heating and cooling purposes has the potential of meeting an appreciable portion of the energy demand in buildings throughout the year. By developing an integrated, multi-purpose solar energy system, that can operate all twelve months of the year, a high utilisation factor can be achieved which translates to more economical systems. However, there are still some techno-economic barriers to the general commercialisation and market penetration of such technologies. These are associated with high system and installation costs, significant system complexity, and lack of knowledge of system implementation and expected performance. A sorption heat pump module that can be integrated directly into a solar thermal collector has thus been developed in order to tackle the aforementioned market barriers. This has been designed for the development of cost-effective pre-engineered solar energy system kits that can provide both heating and cooling.This thesis summarises the characterisation studies of the operation of individual sorption modules, sorption module integrated solar collectors and a full solar heating and cooling system employing sorption module integrated collectors. Key performance indicators for the individual sorption modules showed cooling delivery for 6 hours at an average power of 40 W and a temperature lift of 21°C. Upon integration of the sorption modules into a solar collector, measured solar radiation energy to cooling energy conversion efficiencies (solar cooling COP) were between 0.10 and 0.25 with average cooling powers between 90 and 200 W/m2 collector aperture area. Further investigations of the sorption module integrated collectors implementation in a full solar heating and cooling system yielded electrical cooling COP ranging from 1.7 to 12.6 with an average of 10.6 for the test period.Additionally, simulations were performed to determine system energy and cost saving potential for various system sizes over a full year of operation for a 140 m2 single-family dwelling located in Madrid, Spain. Simulations yielded an annual solar fraction of 42% and potential cost savings of €386 per annum for a solar heating and cooling installation employing 20m2 of sorption integrated collectors.
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| 5. |
- Broms, Loove
(författare)
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Sustainable Interactions : Studies in the Design of Energy Awareness Artefacts
- 2011
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis presents a collection of experimental designs that approach the problem of growing electricity consumption in homes. From the perspective of design, the intention has been to critically explore the design space of energy awareness artefacts to reinstate awareness of energy use in everyday practice. The design experiments were used as vehicles for thinking about the relationship between physical form, interaction, and social practice. The rationale behind the concepts was based on a small-scale ethnography, situated interviews, and design experience. Moreover, the thesis compares designer intention and actual user experiences of a prototype that was installed in nine homes in a residential area in Stockholm for three months. This was done in order to elicit tacit knowledge about how the concept was used in real-world domestic settings, to challenge everyday routines, and to enable both users and designers to critically reflect on artefacts and practices.From a design perspective, contributions include design approaches to communicating energy use: visualizations for showing relationships between behaviour and electricity consumption, shapes and forms to direct action, means for turning restrictions caused by energy conservation into central parts of the product experience, and ways to promote sustainable behaviour with positive driving forces based on user lifestyles.The general results indicate that inclusion is of great importance when designing energy awareness artefacts; all members of the household should be able to access, interact with, and reflect on their energy use. Therefore, design-related aspects such as placement and visibility, as well as how the artefact might affect the social interactions in the home, become central. Additionally, the thesis argues that these types of artefacts can potentially create awareness accompanied by negative results such as stress. A challenge for the designer is to create artefacts that communicate and direct energy use in ways that are attractive and can be accepted by all household members as a possible way of life.
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| 6. |
- Bygdéus, Pia, 1963-
(författare)
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Uttryck genom handling : Medierande verktyg i körledararbete med barn och unga
- 2012
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The role of the choir leader is a complex one. When working with a choir, choir leaders often use several aspects of their professional role. The aim of this qualitative study is to describe, verbalise and make visible the mediating tools that choir directors working with children and youth choirs use. In a longitude study, four choir leaders were observed closely while working with their choirs. They also took part in semi-structured interviews. The empirical data material consists of observation notes, reflective writing, individualinterviews, focus conversations and videotapes. Analysed from a sociocultural perspective, the result points to eight groups of mediating tools: a) a listening attitude towards the choir, with the music in focus; b) a variation in ways of working with the choir, where a variety of physical tools are used; c) the use of musical routines; d) the choir director acting as a role model in shaping musicalexpression with the group; e) a concentrated cooperation with the choir through short and expressive instructions; f) reflection in practice by planning and self-evaluation; g) storytelling, which results in memory training, stimulation of the imagination and the sharing of common experience, and h) the use of target images expressed as visions, small/big goals or jointly stated, communicated targets. The choir directors who participated in the study use a variety of approaches and ways of working as a strategy for communicating and working with child and youth choirs.
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| 7. |
- Bågander, Linnea
(författare)
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Body of movement : (in)forming movement
- 2017
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- In dance many choreographers uses neutral garments not to distract too much from the movement the ”natural” body performs. Still these garments paints the body with color, form, identity and movement qualities. The work exemplifies how the body can extend into materiality and through this it questions the borders of the body not only in form, which is usually the case in fashion design, but also in movement qualities as temporal form. Further it high lightens the importance of awareness of movement qualities in materials of dress as they express the form. The potential of dress in dance is explored in three chapters. For each of these, materials were chosen and arranged in order to provide an additional layer to the movement that the body naturally performs, allowing material to transform the body into various figures of movement. The first part introduces the use of dress in dance and how dress acts with the moving body. The second part explores how movement with the origin in the body can extend spatially and the last part focuses on the materials ability to interpret and materialize the movement. The result of this work suggest that dress has the potential in dance as both choreographic tool and movement quality of equal importance as the movement of a body in a dance performance. Further it intersects the aesthetics of dance, a temporal aesthetic, with the aesthetics of garments, as a form based aesthetic, as it suggests dress as temporal design, allowing dress to create a new body of movement.
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| 8. |
- Galafassi, Diego
(författare)
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Transformational knowledge practices in social-ecological systems
- 2016
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Climate change and poverty alleviation are examples of interconnected challenges propelling changes across environmental, social, cultural and political spheres. Interconnected challenges are characterized by multiple causality, feedback loops, non-linear dynamics. Transformations, as fundamental reconfigurations of social-ecological relations, are increasingly proposed as a strategy for tackling interconnected challenges. Transformations seem to require a move towards diverse, integrated, imaginative, anticipatory, dynamic forms of knowledge making. Although new forms of knowledge creation are indeed emerging in sustainability science and practice, this area of studies is yet to yield a coherent research framework for analyzing the contribution of these practices to transformations in social-ecological systems. The central aim of this thesis is to a) provide a theoretical framework and b) to explore and assess feasibility and effectiveness of concrete knowledge practices that could help governance actors to move towards forms of deliberate transformations in the face of interconnected challenges. Two empirical research papers based on a case-study in Coastal Kenya are presented. In these papers we approached the interconnected challenges of social-ecological trade-offs by engaging multiple knowledge practices (ranging from dialogue, to narrative scenarios, participatory modelling and ecological modelling) to create a space for imagination and deliberation amongst governance actors and scientists. Assessment of this process was performed with a mixed methods research design, including interviews, surveys, and participant observation. Results suggest that overall, these knowledge practices supported: a) development of systemic and collaborative mindsets (Paper 1); b) revision of core assumptions (Paper 1); c) the identification of key cross-scale tradeoffs that were previously not considered by governance actors (Paper 2). These results highlight the potential of these knowledge practices in fostering knowledge relevant for re-imagination and reconfiguration of social-ecological systems. I conclude by proposing that transformational knowledge practices present at least four key elements in that they are: plural and coproduced, affect change across scales, involve multiple ways of knowing and foster imagination.
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| 9. |
- Gunn, Maja
(författare)
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Body Acts Queer
- 2015
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Body Acts Queer is an exploration of the performative and ideological functions of clothes with regard to gender, feminism and queer. It is an artistic, practice-based thesis in the field of fashion and design. The thesis includes three projects: On & Off, If you were a girl I would love you even more and The Club Scene. In these projects I, using text and bodies, work with acts in which clothes have a fundamental role. By exploring bodily experiences of clothes, I investigate the clothes’ performative and ideological functions, with a focus on cultural, social and heteronormative structures.Working with clothing and fashion design from a queer feminist perspective, I transform queer and feminist theory into a creative process. The projects presented in this thesis, together with the discussion, suggest a change in the ways in which bodies act, are perceived and are produced within the fashion field, giving examples of how a queer design practice can be performed. In this thesis, queer design is explored as an inclusive term, containing ideas about clothes and language, the meeting point between fiction and reality and the ability to interpretation and bodily transformations – where desire, bodily experiences and interaction create a change.
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| 10. |
- Jansen, Barbara
(författare)
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Composing over time, temporal patterns : in Textile Design
- 2013
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Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- The work presented in this thesis is a first attempt investigating a new field, exploring the visual effects of movement using light as a continuous time-based medium. Composing over time, temporal patterns - in Textile Design is a practice based research project that investigates the following research question: What does it mean, if time and change – constant movement – becomes part of the textile design expression? The research question has been investigated in a number of experiments that explore the visual effects of movement using light integrated into textile structures as a medium. Thereby, the textile design pattern reveals its composition, not in one moment of time any more, but in fact over time. This thesis aims to create time-based textiles with an emphasis on developing aesthetics of movement – or to establish movement as an aesthetic moment in textile design. Two distinct groups of experiments, colour flow and rhythm exercise, explore a range of different time-based expressions. The experiments have been displayed and explored using woven and braided textile structures which have been construct mainly through the integration of PMMA optical fibres. Through the design processes a first platform and understanding about time as a design material has been developed, which allows composing time-based patterns in light design. New design variables, notions and tools have been defined and established. The achieved new expressions will hopefully lead to discussions on and envisioning of future textiles, opening up the general perception of what textiles are supposed to be like, to show, to express etc., i.e. expands notions of what it means to read a piece of textile work.
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