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Comparing a Novel Motorized Push-Up Ruler with Conventional Subjective Methods for Measuring the Amplitude of Accommodation
Get PDFDevelopment of a prototype for calculating product-specific greenhouse gases in accordance with the “Greenhouse Gas Protocol - Product Standard”
No full textThis thesis develops and evaluates an Excel-based calculator for product carbon footprints and applies it to an electronic door handle across the full life cycle from raw materials to end-of-life. The approach follows the GHG Protocol Product Standard and links bill-of-materials data with secondary life-cycle information to report life-cycle phase-resolved results per functional unit. We test three hypotheses regarding transparency traceability by the GHG Protocol Product Standard and regarding accuracy by validating the new tool against a legacy calculator (legacy factors inserted while holding all other assumptions constant). The analysis yields a product carbon footprint of 8.38 kg CO2e per unit, dominated by upstream materials and pre-processing, while distribution, use (battery replacement), and end-of-life contribute comparatively little. The tool increases transparency and traceability from inputs to results, matches the legacy calculator within predefined tolerances at both the total and phase levels, and reduces manual effort through structured data flows and automated aggregation. Limitations concern top-down treatment of production and simplified end-of-life modeling; future work should integrate supplier-specific data for hotspot components and bottom-up factory data to improve robustness further
