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Wearable Ubiquitous Technol."],"published-print":{"date-parts":[[2017,9,11]]},"abstract":"<jats:p>Peer-to-Peer Variable Service Transaction (P2P-VST) systems enable people to offer and receive help with a wide range of task types. However, such services are hampered by the difficulty of finding relevant and convenient opportunities for transactions in a timely fashion. Many transaction opportunities are missed as a consequence of members not being aware of offers and\/or requests from people nearby or en route that match their needs and\/or abilities. In this paper, we explore the impact of context-awareness on P2P-VSTs to address this problem. Using mobile technology and an in situ study, we evaluate how recommending service requests targeted at a person\u2019s context impacts their willingness to enter a transaction. Our results show that, even when people have not actively volunteered for a service, they are significantly more likely to accept a transaction opportunity if it is convenient for them in terms of time and location. These findings demonstrate how context-aware technology holds the promise of increasing the efficiency and activity level in P2P-VST systems.<\/jats:p>","DOI":"10.1145\/3130913","type":"journal-article","created":{"date-parts":[[2017,9,11]],"date-time":"2017-09-11T12:12:26Z","timestamp":1505131946000},"page":"1-28","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["If It\u2019s Convenient"],"prefix":"10.1145","volume":"1","author":[{"given":"Afsaneh","family":"Doryab","sequence":"first","affiliation":[{"name":"Carnegie Mellon University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Victoria","family":"Bellotti","sequence":"additional","affiliation":[{"name":"Palo Alto Research Center"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alaaeddine","family":"Yousfi","sequence":"additional","affiliation":[{"name":"Hasso Plattner Institute"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuobi","family":"Wu","sequence":"additional","affiliation":[{"name":"Carnegie Mellon University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John M.","family":"Carroll","sequence":"additional","affiliation":[{"name":"Penn State University"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anind K.","family":"Dey","sequence":"additional","affiliation":[{"name":"Carnegie Mellon University"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"320","published-online":{"date-parts":[[2017,9,11]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"2016. 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