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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

Tidseffektivisering av materialleveranser på byggprojekt med radiofrekvensidentifikation, RFID / Time efficiency of material deliveries on construction sites with radio frequency identification, RFID

Pettersson, Jenny, Wiberg, Sara January 2015 (has links)
Studien undersöker möjligheten för tidseffektivisering av materialleveranser med hjälp av RFID, radiofrekvensidentifikation. RFID är en trådlös teknik som används för att identifiera föremål. För att ta reda på vilka problem som uppkommer på dagens byggarbetsplatser genomfördes intervjuer på fyra olika projekt där Skanska Sverige AB är entreprenör. Genom sammanställning av intervjuerna gjordes en kartläggning av materialflöden och materialhantering på samtliga projekt. Dessa problem diskuterades därefter med en sakkunnig inom RFID och resultatet visar förslag på hur RFID kan användas för att uppnå en effektivare materialhantering. Huvudförslaget som analysen redovisar är tidseffektivisering av mottagandekontroller vid materialleveranser. Genom att använda RFID finns möjlighet att automatisera mottagningskontroller. Företaget kan redan vid avlastning upptäcka om material saknas och på så sätt tidseffektivisera byggprojekt. Dock är denna lösning svår att genomföra då mycket behöver förändras i materialflödesprocessen innan RFID införskaffas.
2

Sustainable reduction of asbestos sample losses using Radio Frequency Identification and the 5S method / Hållbar minskning av asbestprovförluster med hjälp av radiofrekvensidentifiering och 5S-metoden

Falcand, Elie January 2021 (has links)
This study is a research around an issue encountered by MyEasyLab, a laboratory involved in asbestos testing for the French market. They are facing a problem of sample losses, which is hardly acceptable, especially when growing on a highly competitive and price driven market. They are therefore looking for ways to have a better traceability of their samples. The technicians were observed to identify their needs and the problems the company is facing. This study is presenting as a result two complementary solutions: the reorganization of the working space, and the usage of the RFID (Radio Frequency Identification) technology to track the samples. The reorganization of the room using the 5S method should enable a more optimized way of working. This method initially used in the industry early on by Toyota, enables to optimize the flows (goods, person, waste …) in a sustainable way. The use of RFID presents the opportunity of a deep change in the whole process of the company, from the client to the labs. Bags already tagged RFID could be sent to the clients for their sample collection, enabling traceability from the beginning of the chain. The samples could, using RFID, be detected as they enter the site, leave the site and if they are in an undesired location (for example in the trash). The RFID technology is also an opportunity to facilitate the work of the technician, with a possibility to save around 4h15 of working time per day. The kind of tags that seems the most appropriate for this application is passive UHF tags. They present the advantages of being cheaper, easier to buy in bulk and readable from longer distances.  Even though the RFID technology is often seen as expensive, a return on investment seems possible for a tag price under 0.08€.  Further experimental tests need to be realized to refine the results of this study.

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