Miljö- och klimatfrågor är bland de största frågor vi står inför idag. Dessa frågor behandlar bland annat matproduktion och matsvinn. Enligt Naturvårdsverket står livsmedelshantering för 20 – 25% avden totala klimatpåverkan i Sverige. 75% av detta är matavfallinnehållande en stor del onödigt matsvinn från de privata hushållen. Som individer har vi därför en stor möjlighet till att påverka detta. Denna studie behandlar en kvalitativ undersökning av en lågteknologisk knapps möjligheter till att skapa ett beteende att inventera sitt kylskåp för att reducera det privata matsvinnet. Undersökningen innefattar utformning, design och framställning av en lågteknologisk knapp samt dess användarupplevelse och funktion i praktiken. Knappen är utformad med hjälp av en analys inom beteendeförändringsramverket Behavioural Change Wheel. Knappen testades på 10 studenter under tre veckors tid för att sedan utvärdera knappens påverkan. Användandet utvärderades genom att undersöka knappens möjligheter till en beteendeförändringkring inventering av kylskåp. Knappen tilldelades och kopplades samman med en rad funktioner för att underlätta och skapa ett beteende till att inventera: En lampa som lös två gånger per vecka, en text på knappen som löd “time to save the world.”, tillhandahållande av bakgrundsinformation gällande klimatfrågan, instruktioner gällande hur en inventering skulle utföras samt den fysiska närvaron av knappen. Resultatet pekar mot att en förändring i beteende skett underundersökningsperioden men resultaten från enkätsvaren är inte tillräckliga för att med statistisk signifikans bekräfta om knappen med funktioner skapat ett beteende. Knappens olika funktioner graderades av deltagarna i utvärderingen och utifrån dessa svar visade det sig att lampans påminnelsefunktion samt knappens fysiska närvaro hade störst påverkan till att en inventering utfördes. / Climate change and the environmental situation is two of the biggest challenges we face both locally and globally. Food production and food swill is a big part of these challenges. 20-25% of the total climate footprint in Sweden is caused by food production and handling according to Naturvårdsverket. 75% of this is food swill that contains a lot of unnecessary food waste produced in the private household. This gives individuals and households a great opportunity to reduce these numbers and affect the total climate footprint. This is a qualitative study investigating and evaluating the possibility of a low-tech buttons effect on individuals behaviour on keeping stock of the content in their refrigerator and possibly reducing their food waste. The study describes the process of creating and designing a low-tech button and an evaluation of the participants thoughts and experience with the button. The button is designed with an analysis of the behaviour change framework Behavioural Change Wheel as well as implementation of different behaviour change techniques to optimize the behaviour change and create a habit of keeping stock of the content of the refrigerator. Ten students used the button for three weeks before evaluating its effect on their behaviour and analysing if they perceived a reduction of their food waste. Five functions where assigned to the button; A LED that shone twice a week, a text engraved on the button that read “time to save the world.”, they were assigned background information regarding the environment and food waste, instructions on how to perform a stock-check and the physical presence of the button itself. The results of the study indicates a change in the participants behaviour during the time of using the button, but the results was not sufficient enough to confirm a change with statistical significance. All the functionalities was graded by the participants of the study and it shows that the reminder from the LED as well as the physical presence of the button was the two functions with the most impact on why the stock keeping was performed.

<p>From having relied on its employees in the interaction with customers, the service industry now move towards an increased adoption of technology to enhance the value of the service</p><p>offering to the customer. This development has also reached the public transport sector which is traditionally seen as low-tech.</p><p>In this study we investigate how the customers experience the use of high-tech supporting services within a low-tech context. The case that is used is the city-bus transport provider Karlstadsbuss who provide a high-tech supporting service called Live, which delivers realtime information on bus departures through a website, a WAPsite, and electronic boards at certain bus stops.</p><p>Focused group interviews were used to get in-dept information from commuters of how they perceive Live. Results show that respondents do not use Live website or WAPsite because the information is not worth the effort of use. Commuters question the service because many</p><p>buses do not run according to the Live-schedule. Still the commuters say they benefit from Live because it contributes alternative ways of finding departure times, and it presents an overview of departure options. However, if the information is in real-time or not is of</p><p>secondary importance.</p>

From having relied on its employees in the interaction with customers, the service industry now move towards an increased adoption of technology to enhance the value of the service offering to the customer. This development has also reached the public transport sector which is traditionally seen as low-tech. In this study we investigate how the customers experience the use of high-tech supporting services within a low-tech context. The case that is used is the city-bus transport provider Karlstadsbuss who provide a high-tech supporting service called Live, which delivers realtime information on bus departures through a website, a WAPsite, and electronic boards at certain bus stops. Focused group interviews were used to get in-dept information from commuters of how they perceive Live. Results show that respondents do not use Live website or WAPsite because the information is not worth the effort of use. Commuters question the service because many buses do not run according to the Live-schedule. Still the commuters say they benefit from Live because it contributes alternative ways of finding departure times, and it presents an overview of departure options. However, if the information is in real-time or not is of secondary importance.

Ghana as a rapidly growing and urbanizing middle-income country is facing a number of challenges, including (1) implementing a sanitary, environmental-friendly, and economically-sound waste management system; (2) increasing its agricultural productivity in a sustainable way to meet the growing domestic food demand; and (3) providing livelihood opportunities in both rural and urban areas. Using the black soldier fly (BSF), a particularly beneficial insect, to locally and cost-effectively valorise abundant, high-impacting, and nutrient rich organic waste streams, such as food waste (FW) and faecal sludge (FS), into affordable and sustainable farming inputs like organic fertilizer and animal feed products, could tackle all these challenges at the same time. Therefore, this study aimed at (1) providing a comprehensive overview of BSF technology; (2) investigating the technical feasibility of valorising food waste and faecal sludge using a low-tech BSF bioconversion system; and (3) assessing the economic viability of such system in the Ghanaian context. First, through an extensive literature review and field visits of BSF units, the different dimensions of the BSF technology were discussed, BSF waste treatment method was compared to other options for organic waste valorisation, case studies of implementation were documented, the status of the research was highlighted, and research gaps were identified. In a second step, a 10-week field work consisting of establishing a BSF colony and recording rearing performance in the one hand, and running two waste treatment trials using a low-tech BSF system on the other hand, enabled demonstrating the technical feasibility of co-digesting FW and FS with the BSF, as well as artificially rearing the BSF in Ghana using a low-tech system. However, further research is needed to characterize the bioconversion products, determine the optimal FW/FS ratio, and optimize the rearing performance of the system. Finally, a costbenefit analysis was conducted to compare three scenarios: (1) co-composting FW and FS into fertilizer; (2) co-digesting FW and FS with BSF into only animal feed; and (3) co-digesting FW and FS with BSF into both animal feed and fertilizer. By building financial models for each scenario and performing a sensitivity analysis, it was established that, in the Ghanaian context, scenario (3) was the most likely to be viable, as well as the most profitable, followed by scenario (1).  On the other hand, scenario (2) was associated with a much lower likelihood to be viable. Eventually, the choice of the optimal valorisation option for FW and FS should consider the local context and priorities. / Ghana, ett snabbväxande medelinkomstland med kraftig urbanisering, står inför ett antal utmaningar, bland annat att (1) införa ett sanitärt, miljövänligt och ekonomiskt avfallshanteringssystem; (2) öka sin jordbruksproduktivitet för att möta den växande inhemska efterfrågan på livsmedel på ett hållbart sätt, och (3) erbjuda möjligheter till försörjning både på landsbygden och i städerna. Genom att använda den svarta soldatflugan (SSF), en särskilt fördelaktig insekt, för att lokalt omvandla rikligt förekommande och näringsrika organiska avfallsströmmar, såsom matavfall (MA) och fekalslam (FS) till prisvärda och hållbara jordbruksinsatsvaror, såsom organiskt gödselmedel och djurfoder, skulle man på ett kostnadseffektivt sätt kunna ta itu med alla dessa utmaningar samtidigt. Därför syftade denna studie till (1) att ge en övergripande översikt över SSF-teknik; (2) undersöka den tekniska möjligheten att skapa värdefulla produkter av matavfall och fekalslam med hjälp av ett biotekniskt system med lågteknologisk SSF i Ghana; och (3) bedöma det ekonomiska systemets bärkraft. Först, baserat på en omfattande litteraturstudie och fältbesök, diskuterades SSF-teknikens olika dimensioner, jämfördes SSF-avfallshanteringsmetoden med andra alternativ för organiska avfallsvalorisationer, dokumenterades fallstudier, redovisades forskningsläget och identifierades kunskapsluckor. I ett andra steg genomfördes ett 10 veckors fältarbete som bestod dels av att etablera en SSF-koloni och dokumentera uppfödningsprestanda, dels att göra två avfallsbehandlingsförsök med hjälp av ett SSF-system med lågteknologi. Därigenom visades att det är tekniskt möjligt att sambehandla MA och FS med SSF, liksom att föda upp SSF i Ghana med hjälp av ett lågteknologiskt system. Det behövs dock ytterligare forskning för att karakterisera slutprodukterna, bestämma det optimala MA/FS-förhållandet och optimera systemets uppfödningsprestanda. Slutligen genomfördes en kostnadsnyttoanalys för att jämföra tre scenarier: (1) kompostering av MA och FS till gödselmedel; (2) sambehandling av MA och FS med SSF till endast djurfoder; och (3) sambehandling av MA och FS med SSF till både djurfoder och gödningsmedel. Genom att bygga modeller för varje scenario och genomföra en känslighetsanalys fastställdes att för Ghana var scenario (3) mest sannolikt livskraftigt, liksom det mest lönsamma, följt av scenario (1). Scenario (2) förknippat med en mycket lägre sannolikhet att vara genomförbart. Till sist bör valet av det optimala behandlingsalternativet för MA och FS ta hänsyn till lokala förhållanden. / Le Ghana, pays en voie de développement connaissant une forte croissance et urbanisation, est confronté à un certain nombre de défis, parmi lesquels (1) la mise en place d’un système de gestion des déchets performant du point de vue sanitaire, environnemental, et économique ; (2) l’augmentation durable de sa productivité agricole afin de répondre à la demande alimentaire croissante dans le pays ; et (3) la création d’opportunités économiques pour ses populations rurales et urbaines. Utiliser la mouche soldat noire (MSN), un insecte particulièrement bénéfique, pour valoriser localement et à moindre coût des déchets organiques abondants, riches en nutriments, et responsables d’importants dommages sanitaires et environnementaux, tels que les déchets alimentaires (DA) et boues de vidange (BV), en intrants agricoles écologiques et bon marché, comme des produits alimentaires pour animaux ou de l’engrais organique, contribuerait à relever tous ces défis à la fois. Ainsi, cette étude visait à (1) réaliser un état de l’art de la technologie liée à la MSN ; (2) étudier la faisabilité technique de valoriser les DA et BV à l’aide d’un system à faible technologie reposant sur la MSN ; (2) analyser la viabilité économique d’un tel system dans le contexte Ghanéen.  Dans un premier temps, un examen approfondi de la littérature scientifique et des visites d’unités de recyclage utilisant la MSN ont permis d’analyser les différentes dimensions de cette technologie, de la comparer à d’autres options de valorisation pour les déchets organiques, de présenter des études de cas, de donner un aperçu de l’état actuel de la recherche, ainsi que de d’identifier les principales lacunes et besoins en matière de recherche. Dans un second temps, dans le cadre d’une étude de terrain réalisée sur une période de dix semaines, un système d’élevage en captivité de MSN a été mis en place et son efficacité analysée, tandis qu’en parallèle deux séries d’expériences de traitement des déchets ont été réalisées. Ces différentes activités ont permis de démontrer que le co-traitement des DA et BA, ainsi que l’élevage en captivité de la MSN à l’aide d’un system low-tech est techniquement réalisable dans le contexte Ghanéen. Toutefois, des recherches supplémentaires sont nécessaires afin d’analyses les propriétés des produits de valorisation, d’établir le ratio DA/BV optimal, et d’optimiser les performances d’élevage. Enfin, une analyse coûts-bénéfices a été réalisée afin de comparer trois scenarios : (1) co-compostage des DA et BV afin de produire de l’engrais ; (2) co-traitement des DA et BV à l’aide de la MSN débouchant sur la production d’aliments pour animaux ; et (3) co-traitement des DA et BV à l’aide de la MSN pour produire à la fois des aliments pour animaux et de l’engrais. La construction de modèles financiers et la réalisation d’une analyse de sensibilité ont permis de démontrer que dans le contexte Ghanéen, le scenario (3) présentait la plus grande probabilité d’être viable et était le plus rentable, suivi par le scenario (1). En revanche, la probabilité que le scenario (2) soit viable s’est révélée beaucoup plus faible. Ultimement, la sélection de la meilleure méthode de valorisation devrait tenir compte du contexte et des priorités locaux.

The Gotlandic smith has been depicted on several picture stones and is a subject of fear and respect in the Old Norse sagas. Their technological prowess can be identified through their skilful work and through the stories told about them, but one must delve deeper to identify the smith-craft itself. This thesis seeks to apply the practice of bone-smithing on the osteological material from the Gotlandic site of “Signallottan” located about a kilometre southeast of the Hanseatic walled city of Visby, a site which was excavated in 2018 to get a broader understanding of the site’s previous uses. In addition to this, an osteological and spatial analysis will be carried out to identify the role of the smith and the use of bones in smithing, as well as a literature study of texts depicting or discussing the smith from the perspective of the Icelandic sagas. The thesis will focus on the application of theoretical frameworks with their basis in materiality, agency, and entanglement to interpret what activities can be identified in Signallottan through the current analyses in correlation with the extensive previous identification of osteological material from the site. This thesis will seek to identify the animal species that are present in the osteological material as well as the degree of cremation of the bones, which could imply that bones were used in smithing practice and ritual during the Viking Age. Around 2,5kg of bones were analysed during the thesis, a majority of which were burnt. The spatial analysis of the site, which was carried out through GIS, reveals a connection between finds of iron, slag, and bone together with oxide scale to form the interpretation of the site as having been used for smithing, that may have used bone as fuel during the carbonisation-process. The smithing practices during the Viking Age are deemed to be a supernaturally connected practice with transformative implications of seiðr, old Norse magic, but are also practices that were highly dependent on the craftsman’s skill and a network of trade to receive the materials necessary for larger-scale production in an agricultural society.

The Internet is rapidly growing in complexity, with increasing negative environmental and social impact. While heating and lighting are tangible examples of energy consumption, internet usage is not perceived as such. Therefore, it opens up opportunities for new, energy-efficient, slower, resource-saving and mindful protocols for the Internet to emerge. I propose Glow OS, an operating system that enables individuals and communities to align their online activities with intermittent solar energy. This system aims to accelerate the transition to a fossil-free internet by promoting solar literacy in the spirit of joy.

Terracotta vessels are about understanding how we can store food by using a new product solution and how we could use less energy and waste less food in doing so. This project is an attempt to minimise the energy usage in our homes but also to gain greater understanding about the food we choose to bring into our homes and what we can do to avoid throwing it away.

Suggestion for a new operahouse in stockholm, förslag på nytt operahus i stockholm. Stockholmsoperan.