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- Crusoe, Jonathan, 1991-
(author)
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Why is it so challenging to cultivate open government data? : Understanding impediments from an ecosystem perspective
- 2019
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Licentiate thesis (other academic/artistic)abstract
- Introduction: This compilation licentiate thesis focuses on open government data (OGD). The thesis is based on three papers. OGD is a system that is organized when publishers collect and share data with users, who can unrestrictedly reuse the data. In my research, I have explored why it can be challenging to cultivate OGD. Cultivation is human activities that change, encourage, or guide human organizations towards a higher purpose by changing, introducing, managing, or removing conditions. Here, the higher purpose is OGD to realize believed benefits. Thus, OGD cultivation is an attempt to stimulate actors into organizing as OGD.Problem and Purpose: OGD is believed to lead to several benefits. However, the worldwide OGD movement has slowed down, and researchers have noted a lack of use. Publishers and users are experiencing a set of different impediments that are challenging to solve. In previous research, there is a need for more knowledge about what can impede the OGD organization, cause non-valuable organizing, or even collapse the organization. At the same time, there is a lack of knowledge about how impediments shape the organization of OGD. This gap can make it hard to solve and overcome the impediments experienced by publishers and users. The sought-after knowledge can bring some understanding of the current situation of OGD. In this research, I have viewed the organization of OGD as an ecosystem. The purpose of this thesis is to draw lessons about why it can be challenging to cultivate OGD ecosystems by understanding OGD impediments from an ecosystem perspective.Research Design: I set out to explore OGD through qualitative research from 2016 to 2018. My research started with a pilot case study that led to three studies. The studies are each reported in a paper and the papers form the base of this thesis. The first paper aims to stimulate the conceptually oriented discussion about actors’ roles in OGD by developing a framework that was tested on a Swedish public agency. The second paper has the purpose of expanding the scope surrounding impediments and was based in a review and systematization of previous research about OGD impediments. The third paper presents an exploration of impediments experienced by publishers, users, and cultivators in the Swedish national OGD ecosystem to identify faults. From the three papers, lessons were drawn in turn and together, that are presented in this thesis.Findings: Cultivators when cultivating OGD ecosystems are facing towering challenges. The following three main challenges are identified in this thesis: (1) to cultivate a system that can manage stability by itself without constant involvement, (2) to cultivate a system that is capable of evolving towards a “greater good” by itself, and (3) to have an up-to-date precise vocabulary for a self-evolving system that enables inter-subjective understand for coordinating problem-solving.Contribution: The theoretical contribution of this thesis is that OGD ecosystems can be viewed as a public utility. Moreover, I recommend that researchers approach the organizing of OGD as the cultivation of evolution, rather than the construction of a structure; to consider the stability of the system in growth, value, and participation; and to be cautious with how they label and describe OGD actors. For actors that are cultivating OGD, I recommend that they guide the OGD actors to help them organize; view OGD cultivation as the management of evolution (growth) towards a purpose; and view cultivation as a collaborative effort where they can supply ideas, technologies, practices, and expertise.
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| 2. |
- Kvick, Mathias
(author)
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Transitional and turbulent fibre suspension flows
- 2014
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Doctoral thesis (other academic/artistic)abstract
- In this thesis the orientation of macro-sized fibres in turbulent flows is studied, as well as the effect of nano-sized fibrils on hydrodynamic stability. The focus lies on enabling processes for new materials where cellulose is the main constituent. When fibres (or any elongated particles) are added to a fluid, the complexity of the flow-problem increases. The fluid flow will influence the rotation of the fibres, and therefore also effect the overall fibre orientation. Exactly how the fibres rotate depends to a large extent on the mean velocity gradient in the flow.In addition, when fibres are added to a suspending fluid, the total stress in the suspension will increase, resulting in an increased apparent viscosity. The increase in stress is related to the direction of deformation in relation to the orientation of the particle, i.e. whether the deformation happens along the long or short axis of the fibre. The increase in stress, which in most cases is not constant neither in time nor space, will in turn influence the flow.This thesis starts off with the orientation and spatial distribution of fibres in the turbulent flow down an inclined plate. By varying fibre and flow parameters it is discovered that the main parameter controlling the orientation distribution is the aspect ratio of the fibres, with only minor influences from the other parameters. Moreover, the fibres are found to agglomerate into streamwise streaks. A new method to quantify this agglomeration is developed, taking care of the problems that arise due to the low concentration in the experiments. It is found that streakiness, i.e. the tendency to agglomerate in streaks, varies with Reynolds number.Going from fibre orientation to flow dynamics of fibre suspensions, the influence of cellulose nanofibrils (CNF) on laminar/turbulent transition is investigated in three different setups, namely plane channel flow, curved-rotating channel flow, and the flow in a flow focusing device. This last flow case is selected since it is can be used for assembly of CNF based materials. In the plane channel flow, the addition of CNF delays the transition more than predicted from measured viscosities while in the curved-rotating channel the opposite effect is discovered. This is qualitatively confirmed by linear stability analyses. Moreover, a transient growth analysis in the plane channel reveals an increase in streamwise wavenumber with increasing concentration of CNF. In the flow focusing device, i.e. at the intersection of three inlets and one outlet, the transition is found to mainly depend on the Reynolds number of the side flow. Recirculation zones forming downstream of two sharp corners are hypothesised to be the cause of the transition. With that in mind, the two corners are given a larger radius in an attempt to stabilise the flow. However, if anything, the flow seems to become unstable at a smaller Reynolds number, indicating that the separation bubble is not the sole cause of the transition. The choice of fluid in the core flow is found to have no effect on the stability, neither when using fluids with different viscosities nor when a non-Newtonian CNF dispersion was used. Thus, Newtonian model fluids can be used when studying the flow dynamics in this type of device.As a proof of concept, a flow focusing device is used to produce a continuous film from CNF. The fibrils are believed to be aligned due to the extensional flow created in the setup, resulting in a transparent film, with an estimated thickness of 1 um.
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| 3. |
- Seifarth, Sofia, 1972-
(author)
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Råd i radion : Modernisering, allmänhet och expertis 1939-1968
- 2007
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Doctoral thesis (other academic/artistic)abstract
- This dissertation deals with two series of radio programmes where listeners’ social and personal questions were answered on the air, broadcasted between 1939 and 1968. This is the period in Swedish history which is usually called the era of the folkhem (“The people’s home”) when social reforms, cultural radicalism and social planning – modernization in the cultural, political and material senses – became a broad project and ideology.The aim of the dissertation is to study how, and on basis of what interests and expectations, these series of programmes were used by the public and by the advisers, as well as to analyse the ideals, norms and visions expressed in programmes and in letters from listeners. Original letters and programmes are analysed both in relation to each other and within broader contexts.The book is organized chronologically and divided into two parts. The first part is centred on the series of programmes, Vart skall jag vända mig? [Where shall I turn?] (1939-1956), and the second part is centred on Människor emellan [Just between us] (1956-1968). The dissertation shows that these series of programmes served several functions from the public’s point of view. They were seen as ways to obtain neutral information, to get advice concerning sensitive questions and to put forward critical comments about society, legislation and institutions. By the advisers the series of programmes were used for the implementation of ideals and values in accordance with modern project – the ideology of the folkhem, the social reforms and the cultural radical ideas.
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