http://hdl.handle.net/2027.42/40241 2013-06-19T01:16:19Z http://hdl.handle.net/2027.42/97778 Using uncensored communication channels to divert spam traffic Chiao, Benjamin; MacKie-Mason, Jeffrey K. We analyze a simple, feasible improvement to the current email system using an uncensored (open) communication channel. Such a channel could be an email folder or account, to which properly tagged commercial solicitations are routed without filtering along the way. We characterize the circumstances under which senders would voluntarily move much of their spam into the open channel, leaving the traditional email channel dominated by person-to-person mail. We then show that under certain conditions all email recipients are better off when an open channel is introduced. Only recipients wanting spam will use the open channel enjoying the less disguised messages and cheaper sale prices, and for all recipients the dissatisfaction associated with both undesirable mail received and desirable mail filtered out decreases. 2012-12-01T00:00:00Z http://hdl.handle.net/2027.42/97552 Knowledge Infrastructures: Intellectual Frameworks and Research Challenges Edwards, Paul N.; Jackson, Steven J.; Chalmers, Melissa K.; Bowker, Geoffrey C.; Borgman, Christine L.; Ribes, David; Burton, Matt; Calvert, Scout 2013-05-01T00:00:00Z http://hdl.handle.net/2027.42/97036 Building the games students want to play: BiblioBouts final performance review Markey, Karen; Rieh, Soo Young; Rosenberg, Victor; Swanson, Fritz; Peters, Gregory R., Jr.; Wong, Michele; Jennings, Brian; Leeder, Chris; St. Jean, Beth; Calvetti, Andrew; Campbell, Caitlin; Frost, Meggan; Lemire, Sarah; Matteson, Adrienne; Thompson, Emily; Johnson, Catherine; Martin, Alyssa; Packard, Averill A University of Michigan (U-M) research team designed, developed, deployed, and evaluated the BiblioBouts information literacy game. BiblioBouts gave students repeated opportunities to develop and practice information literacy skills while they completed a research-and-writing assignment. The evaluation enlisted a multi-methodological approach to data collection. BiblioBouts players were exposed to more online sources than non-players. Players cited more sources in their final-paper bibliographies than non-players. Players felt that they would be better at and more confident about performing various research tasks than they felt before playing the game. They rated their motivation and perseverance at playing the game at high and very high levels. They cited many game-play benefits such as getting a head start on their research, finding relevant sources from classmates’ submissions, becoming a more confident researcher, and being better prepared to write their papers as a result of using the Zotero citation management system. 2013-04-07T00:00:00Z http://hdl.handle.net/2027.42/95718 An analysis of screen reader use in India McCarthy, Ted; Pal, Joyojeet; Cutrell, Edward; Marballi, Tanyi We present the results of two surveys and a qualitative interview-based study with users of screen readers in India. Our early interviews moved us in the direction of examining patterns that differentiate users of two particular software applications -- the dominant market standard JAWS and the free, open source challenger NVDA. A comparison between the two is timely and particularly relevant to issues elsewhere in the developing world. In the short term, the question of choosing one application over another could be based on price and support for custom-made applications, but in the long term, issues of language support are likely to be of concern as well. We explore software adoption behavior and present results that show the relationship between the quality of audio and peoples' willingness to use one software over another. We also compare the switch from JAWS to NVDA to other kinds of switches from dominant software to open source options. In conclusion, we discuss the business aspects of screen readers and examine why the comparison between these two applications is particularly important in the discussion on accessible personal computing for people with vision impairments in the developing world. 2012-01-01T00:00:00Z