Browsing by Author "Vatrapu, Ravi"
Now showing items 1-7 of 7
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Olsen, Mia; Hedman, Jonas; Vatrapu, Ravi (Frederiksberg, 2012)[More information][Less information]
Abstract: Ubiquitous and pervasive computing is fundamentally transforming product categories such as music, movies, and books and the associated practices of product searching, ordering, and buying. This paper contributes to theory and practice of digital payments by conducting a design science inquiry into the mobile phone wallet (m-wallet). Four different user groups, including young teenagers, young adults, mothers and businessmen, have been involved in the process of identifying, developing and evaluating functional and design properties of m-wallets. Interviews and formative usability evaluations provided data for the construction of a conceptual model in the form of sketches followed by a functional model in the form of low-fidelity mockups. During the design phases, knowledge was gained on what properties the users would like the m-wallet to embody. The identified properties have been clustered as ‘Functional properties’ and ‘Design properties’, which are theoretical contributions to the on-going research on m-wallets. One of the findings from our design science inquiry into m-wallets is that everyday life contexts require that evaluation criteria have to be expanded beyond “functionality, completeness, consistency, accuracy, performance, reliability, usability, fit with the organization, and other relevant quality attributes” [12] that are used within current design science work. URI: http://hdl.handle.net/10398/8502 Files in this item: 1
Olsen_Hedman_Vatrapu.pdf (417.1Kb) -
Hovedresultater fra undersøgelse i kommuner, regioner og statAndersen, Kim Normann; Vatrapu, Ravi (Frederiksberg, 2010)[More information][Less information]
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Olsen, Mia; Hedman, Jonas; Vatrapu, Ravi (, )[More information][Less information]
Abstract: The purpose of this paper is to contribute to the design of e-wallets. e-wallets are intended to replace the existing physical wallet, with its notes, coins, photos, plastic cards, loyalty cards etc. Four different user groups, including teenagers, young adults, mothers and businessmen, has been involved in process of identifying, developing and evaluating functional and design properties of e-wallets. Interviews and formative usability evaluations have provided data for the construction of first a conceptual model in the form of sketches, and later a functional model in the form of low-fidelity mockups. During the design phases, knowledge was gained on what properties the test users would like the mobile wallet to hold and the properties implemented in four prototypes. The identified properties have been clustered as ‘Functionality properties’ and ‘Design properties’, which are theoretical contributions to the ongoing research in mobile wallets. URI: http://hdl.handle.net/10398/8311 Files in this item: 1
CAICT_Com_220113.pdf (1.704Mb) -
Real-Time Realistic Social Sharing of Experiences and EnvironmentsVatrapu, Ravi; Suthers, Dan; Joseph, Sam (Frederiksberg, 2009)[More information][Less information]
Abstract: The Shared Experonments system provides interactive services for ubiquitous real-time interactive social sharing of experiences and environments. Designed and implemented for ubiquitous high-speed wireless environments, the Shared Experonments system provides synchronous ways and means for interactive social sharing of erstwhile personal experiences while one or more persons are in remote locations. Example scenarios include sharing of experiences with friends and family while off hiking or trekking, as well as business situations where a remote field worker must collaborate in real time with other field workers or head office. The Shared Experonments system integrates multiple realities and works in a variety of mixed reality modes and interactional settings, and crucially supports deixis from one environment to another. URI: http://hdl.handle.net/10398/7977 Files in this item: 1
2009-CAICT_Com_52009-SE-Paper.pdf (953.4Kb) -
A Single User-Action Solution to Creating, Tagging, Geo-Coding, Archiving, Sharing, and Streaming of Digital Artifacts, Objects, and ContentVatrapu, Ravi; Joseph, Sam (Frederiksberg, 2009)[More information][Less information]
Abstract: The Socio-Spatial History Recorder system provides a one-stop single-user action solution to creating, tagging, geo-coding, archiving, sharing and streaming of digital artifacts. Users of this solution will no longer need to perform intermediary actions to edit, prepare, and publish their digital artifacts to the Internet or their social networks. For example, in the case of digital still images, this system offers a one-click solution to sharing a digital artifact. An user can shoot a picture, geo-code the picture, display the picture in a mapping application, and share it with another user all by one and only one shutter click on the digital still image capturing device. Social sharing rules and rights can be set up in advance or dynamically configured and the digital artifacts can be encrypted if desired or required. Practical uses of this system in the social domain include unobtrusive social sharing of digital artifacts embedded in their rich interactional contexts. Practical uses are also in application domains that require or would benefit from unobtrusive collection of rich ecological data without disrupting and/or interrupting the user's primary activity cycle. URI: http://hdl.handle.net/10398/7974 Files in this item: 1
2009-CAICT_Com_62009-SA-Paper.pdf (618.5Kb) -
Vatrapu, Ravi (Frederiksberg, 2009)[More information][Less information]
URI: http://hdl.handle.net/10398/7976 Files in this item: 1
2009-CAICT_Com_42009-ER-Paper.pdf (698.4Kb) -
A Space Indexed Song Selector, Mapper, and VisualizerVatrapu, Ravi; Joseph, Sam (Frederiksberg, 2009)[More information][Less information]
Abstract: The Songs+Spaces system supports dynamic song selection and visualization based on the digital artifacts associated with a particular location. Songs+Spaces allows the user to select between different channels that filter out sets of digital artifacts associated with their current location. The Songs+Spaces system chooses songs based on user (self or other) preferences, geo-coded photos, videos, text annotations, and graphics associated with a particular place and uses them to provide visual accompaniment on the screen of a personal media player or heads up display. This application makes use of GPS or other location based services, and will run on any device that has access to such services URI: http://hdl.handle.net/10398/7975 Files in this item: 1
2009-CAICT_Com_72009-SS-Paper.pdf (405.6Kb)
Now showing items 1-7 of 7