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排序方式: 共有117条查询结果,搜索用时 15 毫秒
91.
Umer Farooq Craig H. GanoeJohn M. Carroll Isaac G. CouncillC. Lee Giles 《Information processing & management》2008
Awareness has been extensively studied in human computer interaction (HCI) and computer supported cooperative work (CSCW). The success of many collaborative systems hinges on effectively supporting awareness of different collaborators, their actions, and the process of creating shared work products. As digital libraries are increasingly becoming more than just repositories for information search and retrieval – essentially fostering collaboration among its community of users – awareness remains an unexplored research area in this domain. We are investigating awareness mechanisms in CiteSeer, a scholarly digital library for the computer and information science domain. CiteSeer users can be notified of new publication events (e.g., publication of a paper that cites one of their papers) using feeds as notification systems. We present three cumulative user studies – requirements elicitation, prototype evaluation, and naturalistic study – in the context of supporting CiteSeer feeds. Our results indicate that users prefer feeds that place target items in query-relevant contexts, and that preferred context varies with type of publication event. We found that users integrated feeds as part of their broader, everyday activities and used them as planning tools to collaborate with others. 相似文献
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The capability to count cells from biofluids at low cost has important diagnostic implications in resource-poor settings. Many approaches have been developed to address this important need, and while most envision a low per-test cost, the detector instrument can be quite expensive. In this report, we present a novel device that enables low-cost and rapid counting of cells from a drop of blood. We demonstrate a shallow, buried, planar waveguide fabricated by ion exchange in glass that underlies a microfluidic structure for capturing cells. Laser light transmitted through the waveguide was attenuated by the number of metal nanoparticles tagged to the cells because of the interaction of the metal particles with the evanescent field of the waveguide. Calibration of the sensor using bead-tagged lymphocytes captured from human blood showed that the sensor could semi-quantitatively count as few as 100 cells/μL of blood. This technology enables the enumeration of specifically captured cells, allowing for a point-of-care, hand-held device for fast and affordable cell counting in screening, remote, or resource-poor settings. 相似文献
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Isaac B. Berkson 《Journal of Jewish Education》2013,79(4):198-208
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This study revealed the ways that student leaders make sense of their approaches to leadership in African student organizations in the United States. Seven leaders of recognized African student organizations in universities from the Midwest, Pacific Northwest, and the South took part in interviews. Discourse analysis of interview data revealed the complexity of leadership discourses and practices in a postcolonial context in showing that African student organizational leadership (a) proceeds through the accommodation and resistance to dominant Western organizational and/or colonial discourses and (b) enables leaders to make sense of theirs and their organizations’ identities in the context of discourses that marginalize African forms of cultural expression. 相似文献
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The Seminar Defined 总被引:1,自引:1,他引:0
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J. Isaac Copeland Paul A. Kral Jr. Leonard Gamble Leonard Gamble J. W. Whitlock T. P. Yeatman 《Peabody Journal of Education》2013,88(4):247-255
The Light That Shines: Chapel Hill, 1912–1916. Robert B. House. (Chapel Hill: University of North Carolina Press, 1964. Pp. 216. $5.00.) Psychology of Adolescence for Teachers. Glenn Myers Blair and R. Stewart Jones. (New York: Macmillan, 1964. Pp. 118. $1.50, paper.) Psychology of the Child in the Classroom. Don C. Charles. (New York: Macmillan, 1964. Pp. 86. $1.25, paper.) Reading Instruction for Today's Children. Nila Banton Smith. (Engle‐wood Cliffs, New Jersey: Prentice‐Hall, 1963. Pp. 594. $7.50.) Religion and the Schools, The Great Controversy. Paul Blanchard. (Boston: Beacon Press, 1963. Pp. 265. $4.95.) School Business Administration in the Smaller Community. Fredrick W. Hill and James W. Colmey. (Minneapolis: T. S. Denison and Company, 1964. Pp. 324. $7.95.) Sociology of Childhood. Oscar W. Ritchie and Marvin R. Koller. (New York: Appleton‐Century‐Crofts, 1964. Pp. 333. $5.00.) The Teaching of Mathematics. Roy Dubisch. (New York: John Wiley and Sons, 1963. Pp. 124. $2.95, paper.) Vignettes on the Theory and Practice of School Administration. Finis E. Engleman, Shirley Cooper, and William J. Ellena. (New York: The Macmillan Company, 1963. Pp. 237. $4.80.) 相似文献