Anak Agung Gede Dharma

Design of a wearable haptic vest as a supportive tool for navigation

We propose an alternative way to display haptic feedback in ubiquitous computing. We develop a haptic vest that can display detailed haptic feedbacks by utilizing 5x12 arrays of vibrotactile actuators. We conducted a preliminary user testing on 34 stimuli (with four different directions) to measure the effectiveness of various vibrotactile patterns. We have discovered that each stimulus within a given direction has different properties in terms of their apprehensibility and comfort.

Mapping texture phase diagram of artificial haptic stimuli generated by vibrotactile actuators

We propose a classification method of tactile sensations elicited by artificial haptic stimuli by using Japanese onomatopoeias/adjectives. This method classifies adjectives based on user subjective perception and plot basic components of artificial haptic stimuli. The comparison of perceived tactile sensations from artificial haptic stimuli and genuine physical materials is also discussed in this paper.

The utilization of Social Networking Service and Japanese manga in strategic user generated design

In this research, we propose an online service which utilizes Social Networking Service (SNS) as the medium and Japanese cartoon (manga) as the communication method. The growth of SNS has created a new potential in marketing. While users communicate and interact via SNS, the list of their conversation which is called casual data can be used to determine their needs or aspirations. SNS can be very useful for product/service developers, especially when developing new ideas or simply evaluating the feasibility of their existing products/services. Furthermore, SNS provides a unique system that enables expressive and two-way communication between its users. SNS is known for its effectiveness in delivering fresh news and information, therefore it can be used as promotional media. Although several online services that utilize SNS and casual data have been provided, the purpose of those services is still unclear and ineffective. In those services, users were only asked for their opinions without receiving sufficient feedbacks. To solve those problems we propose an innovative way of utilizing SNS and casual data in designing user generated design. In our proposed system, users can directly contribute to the product/service development process in an interesting way. We designed an online service which allows users to posts manga that describes their original idea. While contributing to the product/service development, they can also benefit from expressing their hobbies and receiving feedbacks from other users.

A Heuristic Model of Vibrotactile Haptic Feedbacks Elicitation Based on Empirical Review

We propose a novel heuristic model of vibrotactile feedbacks elicitation. The model is based on two known tactile elicitation principles, i.e. perceived tactile sensation and apparent haptic motion. Our previous studies, along with empirical reviews were used to provide an insight of how these two principles work individually. Our preceding works on the mapping of texture phase diagram of artificial vibrotactile stimuli reveals 3 main perceived vibrotactile sensation, i.e. dampness, friction, and hardness. Furthermore, we have conducted a preliminary research to observe apparent haptic motion in our proposed haptic vest interface. Our findings and the empirical reviews imply that these two haptic principles can be used concurrently to create a novel user experience.

Green technology and wearable haptic feedback display with 5×12 arrays of vibrotactile actuators

In this study, we have developed a wearable haptic vest that can display sophisticated haptic feedback patterns. Our proposed haptic vest consists of 60 vibrotactile actuators that have direct contact to torso area. In addition, we have developed 34 haptic stimuli and conducted user testing to measure the effectiveness of our proposed haptic display method.

An interactive toolkit for designing vibrotactile haptic messages

In this paper, we propose an interactive way and toolkit for designing custom haptic messages. Our proposed toolkit can assist users in designing haptic messages for complicated expressions, as proven by user testing results.