Browsing by Author "Julia Nehme, María Begoña"
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- ItemEffects of mouse, trackpad and 3D motion and gesture control on performance, posture and comfort(2015) Kar, Gourab; Vu, Amy; Julia Nehme, María Begoña; Hedge, Alan
- ItemIdentifying Customer’s Emotional Responses Towards Guest Room Design by Using Facial Expression Recognition in Hotel’s Virtual and Real Environments(2019) Álvarez León, Iván; Julia Nehme, María Begoña; Yoon, So-YeonIt is well known that emotions play a key role in the customer experience in tourism. Measuring emotions can provide valuable information about customer’s perceptions regarding hotel spaces. The purpose of this study is to identify which type of hotel environment, Virtual or Real, is more effective in eliciting emotional responses from participants who are shown a scenario for the first time. Furthermore, this study aims to uncover which of the components of guestrooms, e.g., natural views to the outside or interiors are capable of triggering higher emotional responses. Two experiments were conducted to provide evidence, the first presented a Virtual Environment to participants via video, and while the second one was conducted in Real Environments of presidential suites. Emotional responses were analyzed using FaceReader software, a facial expression recognition system that identifies seven emotions, physiological arousal and pleasure. Results showed low overall mean intensity values of each emotion in both virtual and real environments. Nevertheless, significant differences in the maximum peak intensity values were found between virtual and real environments with intensity values being higher in the real guestroom. No significant differences were found in emotional responses to the views to the outside or views of the guestroom interiors.
- ItemInteraction and Design Barriers for Older Adults in Food Delivery Apps: A Usability Study(2024) Julia Nehme, María Begoña; Rosell Cisternas, Javiera EsperanzaThis study aims to evaluate the usability of two Food Delivery Apps (FDAs) available in the marketwith a sample of older adults. We performed a usability study of basic tasks required to purchasegroceries with 12 participants (Mage ¼ 70.92, SD ¼ 4.56). Results showed that interaction experi-ence with both apps was similar. Most participants could perform the tasks, but not efficiently.Tasks that took the longest mean time were adding the first product to the cart and schedulingthe delivery service. We found 22 interface barriers for FDA1 and 23 for FDA2. The most frequenterrors were caused by a lack of a clear roadmap to guide the purchase process, unclear feedbackwhen adding products, information overload, and difficulty distinguishing interactive buttons fromtext/icons and mandatory actions from optional ones. System Usability Scale results were belowthe suggested cut-off point of 68. We provide recommendations that could help design accessibleFDAs for older adults and make them easier to use for everyone