Patient-controlled sedation systems, in which the patient has control of sedative administration, have been shown to be effective and safe for patients undergoing minor procedures. Safety depends on the adequacy of the step-wise increase in dose of the sedative, the lockout time and patient’s ability to adjust the effective activation of the handset. While there is no patient-controlled sedation (PCS) system available domestically, we have developed a new purpose-built PCS pump, and determined its degree of precision using a microweight measuring scale. The PCS system was designed to be applied to most intravenous sedatives and work through a newly developed operating software algorithm that titrates the doses and lockout times. Our system titrates the doses through software modification, and for experimental purposes, the number of steps for handset activation by the patient was set to four, and the lockout time was set to 30 s. The degree of precision of the PCS system was tested using an electronic weighing scale. The comparison of the amount infused via the PCS system with weight on the scale showed nearly same patterns at the four infusion stages, and the difference was minimal (3% on average at each infusion step). We designed and manufactured a pilot button-type PCS pump capable of use by the patient for optimal sedation, and confirmed the precise working mechanism of the pump, thereby reducing the margin of error for infusion accuracy to 3% or less on average

Study objectives are: 1) to investigate the difference in consumer perceptions of the model’s image and physical attractiveness according to advertising model types; 2) to explore the effect of the difference between the model’s image and the consumer’s self image, the difference between the model’s image and the brand’s image, and the physical attractiveness of the model on attitude toward the advertising model; and 3) to explore the effect of attitude toward the advertising model on attitude toward the advertisement. A total of 306 female consumers over the age of 45 participated in experiments with advertisement stimuli for a senior apparel brand. Results showed a significant difference in the model’s images and physical attractiveness according to each model type. The consumer’s attitude toward the advertising model was determined by physical attractiveness of the model, not by the difference between model’s image and the consumers’ self-image, nor by the difference between the model’s image and brand image. Attitude toward advertisements was determined by attitude toward the advertising model. The findings imply that advertising models of a senior apparel brand can be selected based on the physical attractiveness of the model. Consumers do not consider whether the model’s image fits well with their self-images or the brand’s image when building an attitude toward the advertising model, and this precedes the consumer’s attitude toward the advertisement. These results can be used as guidelines to select appropriate models for advertisements of senior apparel brands.