Ear biometrics for patient identification in global health: a field study to test the effectiveness of an image stabilization device in improving identification accuracy

Table 1 Pugh Chart for Alternate Design Analysis

		Concepts
Criteria	Weight	Diffused LED plate	Electroluminescent Ribbons	LED Strip
Shadow	2	0	0	+
Power Required	1	0	0	–
Shape	1	0	+	+
Buy/Make	1	0	0	+
Price	1	0	–	0
	Weighted Total	0	0	3

This Pugh chart was used to rank lighting designs for our Donut. Key metrics are weighted according to importance (2 being a more important design feature than 1). We used the diffused LED design as a baseline (all zero ranks). A positive mark indicates that the design outperforms the diffused LED for the specific metric, while a negative mark indicates underperformance. Weighted totals were determined by replacing the positive and negative signs with positive and negative one values, and multiplying each value by the corresponding metric’s weight. All values in each column were added, and totals for each design option were compared. The LED strip, with the highest total (3), was deemed the best lighting design option for the Donut

ISSN: 1472-6947