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Visar resultat 1 - 5 av 52 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Towards a Circular Economy with Environmental Product Policy : Considering dynamics in closing and slowing material loops for lighting products

    Författare :Jessika Luth Richter; Internationella miljöinstitutet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extended producer responsibility; Circular Economy; critical materials; Policy Evaluation; product lifetime; lamps; lighting products; WEEE; Product Policy; ecodesign;

    Sammanfattning : A Circular Economy (CE) can help to achieve the sustainable development goal of responsible consumption and production. Product policies, in turn, can support CE objectives by promoting reuse of products, recycling of materials, and providing ecodesign incentives for more durable products. LÄS MER

  3. 2. Trading Off between Flexibility and Product Platform Constraints for Effective Technology Introduction

    Författare :Iñigo Alonso Fernandez; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Product Development; Systems Engineering; Technology Integration; Model-Based Design; Product Platforms; Flexibility;

    Sammanfattning : Developing product platforms is an established method of reducing internal variety costs while delivering variety to customers.  A critical aspect of a platform, that is expected to be used and extended for many years, is the ability to introduce new technologies and solutions effectively. LÄS MER

  4. 3. Toward resilient product-based service supply chains

    Författare :Gabriella Gatenholm; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; product-based services; service development; Supply Chain; service supply chain; sustainability; circular economy; risk; resilience;

    Sammanfattning : Circular economies represent a step toward breaking the linear production model in supply chains. As drivers of enhanced circularity, product-based service (PBS) offerings extend and/or intensify the utilization period of products and thus decelerate the flow of resources. LÄS MER

  5. 4. Design and Stability of Cu(In,Ga)Se2-Based Solar Cell Modules

    Författare :Johan Wennerberg; Michael Powalla; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Thin film solar cells; CIGS; Cu In; Ga Se2; stability; lifetime; testing; Elektronik; Electronics; Elektronik; Elektronik; Electronics;

    Sammanfattning : Cu(In,Ga)Se2 (CIGS) is one of the most promising semiconductor compounds for large-scale production of efficient, low-cost thin film solar cells, and several research institutes have announced their plans for CIGS production lines. But for the CIGS technology to become a commercial success, a number of issues concerning manufacturability, product definition, and long-term stability require further attention. LÄS MER

  7. 5. Carrier Lifetime Relevant Deep Levels in SiC

    Författare :Ian Don Booker; Einar Sveinbjörnsson; Erik Janzén; Anthony Peaker; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Silicon carbide; Deep level transient spectroscopy; Deep level; Carrier lifetime; Time-resolved photoluminescence;

    Sammanfattning : Silicon carbide (SiC) is currently under development for high power bipolar devices such as insulated gate bipolar transistors (IGBTs). A major issue for these devices is the charge carrier lifetime, which, in the absence of structural defects such as dislocations, is influenced by point defects and their associated deep levels. LÄS MER