5. What is the portfolio score of using a lightweight patient transfer board in a hospital or nursing home setting? Consider the board's material, ergonomic features, potential to reduce nurse strain, ease of cleaning and storage, and market competition.

6. How can a smart home ventilation system improve energy efficiency and user comfort in households with manual vent systems? Develop an objective tree to clarify the need for a smart ventilation system and prioritize objectives related to energy savings, user convenience, and indoor air quality. Consider additional features such as air quality sensors and integration with other smart home devices that could enhance the proposed design.