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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Integrating novel circular economy technologies in complex trans-sector value chains : Case study of insect larvae conversion technology within waste and feed value chains / Integrering av ny teknik för cirkulär ekonomi i komplexa transsektoriella värdekedjor : Fallstudie av omvandlingsteknik för insektslarver inom avfalls- och fodervärdekedjan

Fadhila, Audinisa January 2020 (has links)
Even as the current linear value chains (LVC) of organic waste and animal feed hold the potential to become circular, these practices continue to pose major environmental risks such as deforestation and overfishing. Therefore, a novel circular value chain (CVC) is proposed, connecting the organic waste stream with animal feed production by the use of insect-based organic waste conversion technology. The Black Soldier Fly (BSF) is chosen as the insect-based conversion technology since it has nutritional properties, which serves both waste treatment and animal feed material production purposes. Although there are already initiatives and collaborations in the Swedish context, the transition has not yet been successful. The study aims to identify and propose required solutions for the value chain transition. By using the transitional study tools of Technological Innovation System (TIS) and Multi Level Perspective (MLP) alongside sustainable value chain transition studies, it is found that technological and information-related adjustments are required to further enable the transition. Technological adjustments are studied from the perspective of Ragn-Sells AB as a potential insect- based organic waste conversion actor. Scenarios to see economical sustainability were designed based on the quantity fluctuation of waste as material input (3,000 tons per year and 15,000 tons per year), possibility of automated operation which affects both investment and operating costs of the facility, and procurement of small BSF larvae (off-site and in-site breeding). From the different scenarios designed, it is found that the scenario with the capacity of 15,000 tons per year, higher investment due to automation, and on-site breeding is the most preferable for the case. To answer information- related needs, an Informational Flow Framework (IFF) is proposed. The IFF consists of “Value Chain Stakeholders”, “CVC Relevant Regulations”, “Information Data Pool”, and “Information Flow”. The framework’s main function is to identify the type of material information required to be distributed in the system and the stakeholders whom require and/or provide various information, with the main goal of increasing the trust among the stakeholders related to material information. / Trots att den nuvarande linjära värdekedjan (Linear Value Chain) för organiskt avfall och djurfoder har potentialen för en cirkulär ekonomi, så utgör den nuvarande praxisen fortfarande stora risker såsom avskogning samt överfiske. Därför föreslås en ny cirkulär värdekedja (Circular Value Chain), som förbinder den organiska avfallsströmmen med djurfoderproduktion med användning av insektbaserad omvandlingsteknologi för organiskt avfall. Svart soldat fluga (Black Soldier Fly/BSF) utses som den insektsbaserade omvandlingsteknologin eftersom den har näringsegenskaper som bistår både avfallsbehandling och djurfoderproduktionsändamål. Trots att det redan finns initiativ och samarbeten i det svenska sammanhanget har övergången ännu inte lyckats. Studien syftar till att identifiera och föreslå nödvändiga lösningar för den cirkuläravärdekedjan. Genom att använda övergångsstudieverktygen av Teknologiskt Innovations System (TIS) samt Multi Level Perspective (MLP) och diverse värdekedjeövergångsstudier, konstateras det att tekniska och informationsrelaterade justeringarkrävs för att ytterligare möjliggöra övergången från en linjär till en cirkulär värdekedja. Teknologiska anpassningar studeras ur Ragn-Sells ABs perspektiv som en potentiell aktör för omvandling av organiskt avfall. Scenarier för att undersöka ekonomisk hållbarhet utformades baserat påfluktuering av mängden avfall som materialinmatning (3,000 ton per år och 15, 000 ton per år), möjlighet till automatiserad drift som påverkar både CAPEX & OPEX i anläggningen (hög CAPEX och låg CAPEX), och upphandling av små BSF-larver (avel utanför anläggningen). Från de olika utformade scenarierna konstaterades att scenariot med en kapacitet på 15,000 ton per år, hög CAPEX och avel på plats är det mest fördelaktiga för Ragn Sells AB. För att besvara informationsrelaterad justering föreslås en informationsflödesram (IFF). IFF består av ”Value Chain Interessholders”, “CVC Relevant Regulations”, “Information Data Pool” och “Information Flow”. Ramens huvudfunktion är att identifiera vilken typ av materialinformation som krävs för att distribueras i systemet och den aktör som kräver och/eller tillhandahåller informationen, med det huvudsakliga målet att öka förtroendet bland aktörerna relaterade till materiell information.
2

Den liberala demokratins Pyrrhusseger? : En postkommunistisk studie av förutsättningarna för demokratisk konsolidering

Fällström, Andreas January 2016 (has links)
As our world globalizes and grows smaller, there is increasing concern about questions related to the future of liberal democracy. Following the breakdown of communism on the European continent and the ensuing emphasis on the universalization of liberal democratic values as ‘the end of history’, much research has been centered on understanding the crafting of stable democratic systems in East-Central Europe. Recently, the widely observed phenomenon of ‘illiberal backsliding’ has evoked considerable scholarly attention. However, the research community lacks a deeper understanding of the factors determining the prospects of sustainable democratic consolidation in a post-authoritarian environment. This case study therefore relates the problems associated with anchoring democratic governance in the post-communist states of East-Central Europe to a broader framework of democratization theories. It is argued that consolidating democracies is a far more complex task than has earlier been acknowledged, as it depends on a multitude of interrelated socio-cultural and political determinants. As is further proposed, the post-communist countries have largely been entrapped in an unsustainable state of incomplete democratic consolidation, evident specifically in the prevalent lack of civic culture and a deficient process of citizenship formation, entailing a serious risk of authoritarian backlash. A somewhat paradoxical hypothesis is suggested: that periods of illiberal government actually could be instrumental to generate the kind of social community needed for a long-term sustainable democratic society. In a concluding discussion on the prospects of consolidating democracy on a global scale, it is stated that the liberal democratic endeavor may be facing two future trajectories: while the first one is that of a global democratic decline in the face of authoritarian reaction, the opposite trajectory implies that liberal democracy may well have a universal future, although to accelerate to that point, it needs to overcome an initial state of instability requiring some setbacks.

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