Developing validating performance assessment tasks concepts geometrical optics

After-sales service requirements further influence the design of the PSS hardware, and need to be considered already in the early stage of the design process [12].

A large network of stakeholders is typically involved in the design of the PSS eco-system.

The information they carry needs to be modelled during the evaluation of PSS options [13], so to identify optimal solutions from the perspectives of technological feasibility, user-acceptability, and sustainability [7].

This paper covers a review-based RC, comprehensive DS-I and PS, and an initial DS-II.

Hence, it is far from evident how sustainability-related criteria shall be defined in conjunction with more traditional performance parameters, and how they shall be “mixed and matched” with, for instance, quality, time, and cost in PSS design decision-making [25,26].

The research work is motivated by the perceived absence of processes and tools able to seamlessly resolve sustainability vs. The objective of this paper is to investigate how multi-criteria decision making (MCDM) models shall be applied to down-select PSS concepts from a value perspective, by considering sustainability as one of the attributes contributing to the overall value of a solution.

Going beyond a single product life cycle to an interconnected series of product/service cycles highlights the importance of including “downstream” objectives (e.g., serviceability, flexibility, upgradeability, recyclability) in design decision making.

These are often conflicting with product-related requirements and need to be carefully traded-off from an early design stage [9].

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The emergence of “servitization” and product-service systems (PSS) further emphasizes the need for making thoughtful trade-offs between technical aspects, business strategies, and environmental benefits of a design.

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