Aktuella disputationer

Dams and weirs fragment rivers and can prevent fish from reaching habitats needed for feeding, refuge, and reproduction. Fishways are built to restore passage, but their presence alone does not guarantee functional connectivity.

This thesis examines how fishway performance can be assessed across species, sites, and time. A review of available methods showed that no single approach captures all relevant aspects of passage. A telemetric field study at a vertical-slot fishway found that passage differed among species and fish sizes and hinted at the importance of attraction, entry, and individual motivation. In Sweden, fish-counter and electrofishing data from 35 fishway locations showed that more species were observed and community-level passage effectiveness was higher in nature-like than in technical fishways. Long-term observations in four of these fishways showed that movements of the otherwise rarely recorded vimba were concentrated in spring and early summer and were related to seasonal state and short-term changes in temperature and discharge.

Together, the studies show that fishway passage is a multi-stage process that is usually only partly observed. Reliable assessment therefore requires clear management objectives and, ideally, combinations of methods.

• Link to full record in DiVA.
• Link to dissertation as file.

Många unga ägnar sig åt fiktion på sin fritid. Mellan 70 och 80 procent väljer att titta på tv-serier. Samtidigt finns en oro, inte minst i gymnasieskolan, att audiovisuella fiktionsformer tränger undan skönlitterär läsning och därmed försämrar ungas läsförståelse. Men vad innebär egentligen ungas fritidstittande på tv-serier och vilken fiktionskompetens skulle det kunna bidra med? Kunskapen om detta är bristfällig.

I sin doktorsavhandling undersöker Sofia Oldin Cederwall gymnasieelevers engagemang i tv-serier som fritidsfiktion och sätter resultaten i ett litteraturdidaktiskt sammanhang. Det empiriska underlaget består av tretton fokusgruppssamtal med sammanlagt 46 gymnasieelever som i sina diskussioner utgår från en gemensam tv-serie (Breaking Bad, Euphoria, Friends, Gossip Girl och Stranger Things). I avhandlingen analyseras de unga tv-serietittarnas engagemang, meningsskapande och litterära kompetens, som de kommer till uttryck i samtalen. 

Resultaten visar att tv-serietittande kan förstås som en komplex aktivitet som förenar emotionellt och kognitivt engagemang. Avhandlingen synliggör de unga tv-serietittarnas fiktionskompetens och visar att de är kvalificerade deltagare i tolkningsgemenskaper.

• Link to full record in DiVA.
• Link to dissertation as file.

Global supply chains increasingly depend on cross-border arrangements through which firms relocate, outsource, or coordinate activities across organizational and national boundaries. However, the strategic promise of offshoring is not automatically realized, as many initiatives underdeliver relative to initial expectations. At the same time, global supply chains are increasingly subject to binding regulation that extends corporate accountability across supply chain tiers, marking a shift from voluntary corporate social responsibility initiatives toward enforceable legal obligations. This dissertation examines how management control systems, understood as packages of interrelated control mechanisms, are configured and, when required, reconfigured in global supply chains, with particular attention to offshoring performance and sustainability compliance. Drawing on four studies, it shows that offshoring performance is better understood through configurations of formal and informal controls and contextual factors such as trust, culture, and relationship continuity. It further shows that the operation of control arrangements involves recurring governance effort and that binding supply chain due diligence regulation reshapes management control to demonstrate sustainability compliance.

• Link to full record in DiVA.
• Link to dissertation as file.