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991.
Newland Lisa Anne Mourlam Daniel Strouse Gabrielle DeCino Daniel Hanson Cylie 《Learning Environments Research》2019,22(3):311-323
Learning Environments Research - This phenomenological study explored children’s school life as it relates to their subjective well-being in the United States (N?=?22). It was... 相似文献
992.
993.
Daniel Carlos Guimarães Pedronette Longin Jan Latecki 《Information processing & management》2021,58(2):102443
Graph Convolutional Networks (GCNs) have been established as a fundamental approach for representation learning on graphs, based on convolution operations on non-Euclidean domain, defined by graph-structured data. GCNs and variants have achieved state-of-the-art results on classification tasks, especially in semi-supervised learning scenarios. A central challenge in semi-supervised classification consists in how to exploit the maximum of useful information encoded in the unlabeled data. In this paper, we address this issue through a novel self-training approach for improving the accuracy of GCNs on semi-supervised classification tasks. A margin score is used through a rank-based model to identify the most confident sample predictions. Such predictions are exploited as an expanded labeled set in a second-stage training step. Our model is suitable for different GCN models. Moreover, we also propose a rank aggregation of labeled sets obtained by different GCN models. The experimental evaluation considers four GCN variations and traditional benchmarks extensively used in the literature. Significant accuracy gains were achieved for all evaluated models, reaching results comparable or superior to the state-of-the-art. The best results were achieved for rank aggregation self-training on combinations of the four GCN models. 相似文献
994.
David H. Weaver G. Cleveland Wilhoit Daniel C. Hallin Keith Blume Robert E. Denton Jr. Gary C. Woodward 《Communication Booknotes Quarterly》2013,44(6-7):70-73
THE AMERICAN JOURNALIST: A PORTRAIT OF U.S. NEWS PEOPLE AND THEIR WORK by David H. Weaver and G. Cleveland Wilhoit (Bloomington: Indiana University Press, 1986—$25.00) THE “UNCENSORED WAR:” THE MEDIA AND VIETNAM by Daniel C. Hallin (New York: Oxford, 1986—$22.50) THE PRESIDENTIAL ELECTION SHOW: CAMPAIGN '84 AND BEYOND ON THE NIGHTLY NEWS by Keith Blume (Bergin & Garvey Publishers, 670 South Amherst Rd., South Hadley, MA 01075—$29.95/12.95) POLITICAL COMMUNICATION IN AMERICA by Robert E. Denton, Jr. and Gary C. Woodward (New York: Praeger, 1985—$42.95/15.95) NEWS MEDIA AND PUBLIC POLICY: AN ANNOTATED BIBLIOGRAPHY edited by Joseph P. McKerns (New York: Garland, 1985—$39.00) COMMITTED JOURNALISM: AN ETHIC FOR THE PROFESSION by Edmund B. Lambeth (Bloomington: Indiana University Press, 1986—$25.00/8.95) SUING THE PRESS: LIBEL, THE MEDIA & POWER by Rodney A. Smolla (New York: Oxford University Press, 1986—$18.95) WORLDLY POWER: THE MAKING OF THE WALL STREET JOURNAL by Edward E. Scharff (Beaufort Books, 9 East 40th St., New York 10016—$18.95) THE ULTIMATE INSIDERS: U.S. SENATORS IN THE NATIONAL MEDIA by Stephen Hess (Washington, DC: Brookings Institution, 1986—price not given, cloth and paper) THE FLACKS OF WASHINGTON: GOVERNMENT INFORMATION AND THE PUBLIC AGENDA by David Morgan (Westport, CN: Greenwood Press, 1986—$29.95) ISSUES MANAGEMENT: CORPORATE POLICYMAKING IN AN INFORMATION SOCIETY by Robert L. Heath and Richard Alan Nelson (Beverly Hills, CA: Sage, 1986—no price given) BEHIND THE LINES: CASE STUDIES IN INVESTIGATIVE REPORTING by Margaret Jones Patterson and Robert H. Russell (New York: Columbia University Press, 1986—$28.50) GOVERNING THE PRESS: MEDIA FREEDOM IN THE U.S. AND GREAT BRITAIN by Deborah Holmes (Boulder, CO: Westview Press, 1986—$16.50, paper) THE UNTAPPED POWER OF THE PRESS: EXPLAINING GOVERNMENT TO THE PEOPLE by Lewis W. Wolfson (New York: Praeger, 1985—$28.95/9/95) 相似文献
995.
A library service model that provides reference and instructional services by summoning reference librarians from a single service point is described. The system utilizes Libraryh3lp, an open-source, multioperator instant messaging system. The selection and refinement of this solution and technical challenges encountered are explored, as is the design of public services around this technology, usage of the system, and best practices. This service model, while a major cultural and procedural change at first, is now a routine aspect of customer service for this library. 相似文献
996.
Daniel Goldberg Miriam Olivares Zhongxia Li Andrew G. Klein 《Journal of Map & Geography Libraries》2014,10(1):100-122
In upcoming years, two major changes in the computing landscape will reshape how map and GIS data libraries (MGDLs) will be required to perform their core functions in the future. These advancements—cloud computing and the “Big Data era”—offer opportunities and challenges for libraries, but most dramatically changes. Commercial cloud computing solutions are available as on-demand service; low-cost, internal private clouds are now a financial possibility. Simultaneously, Geographic Information Science (GISci) data and services have advanced at an ever-increasing pace into the “Big Data,” swelling the types and amounts of GIS data and services available. These two shifts have and will impact the entire GIS world and MGDLs, in response, and will now be required to collect, curate, and make available more data and services than ever. The MGDL community must be prepared to respond and react in order to remain effective. This article explores the evolving landscapes within which MGDLs must operate and examines how their roles and operational organization will be impacted. The hope of the authors is that such analyses will spark community-driven discussion to motivate the next major phase of research and implementation in the world of MGDLs. 相似文献
997.
The Portal to Texas History (http://texashistory.unt.edu) and the University of North Texas (UNT) Digital Library (http://digital.library.unt.edu) contain more than 445,000 items collectively, hosted by the UNT Libraries. These collections include a variety of serial publications such as newsletters, magazines, scholarly journals, annual reports, and yearbooks. Many of these serials are key resources for the user groups of both repositories. In this article, we discuss the importance of serials within our collections, some of the challenges, the standards we use, and how we leverage metadata to facilitate access to serials for diverse global users. 相似文献
998.
Marchant DC Greig M Bullough J Hitchen D 《Research quarterly for exercise and sport》2011,82(3):466-473
The influence of internal (movement focus) and external (outcome focus) attentional-focusing instructions on muscular endurance were investigated using three exercise protocols with experienced exercisers. Twenty-three participants completed a maximal repetition, assisted bench-press test on a Smith's machine. An external focus of attention resulted in significant (p < .05) improvements in performance compared to the internal focus of attention, but not the control condition. Seventeen participants completed repetitions to failure at 75% 1-RM on free bench press and squat exercises. In both tasks, externally focused instructions resulted in significantly greater repetitions to failure than control and internal focus conditions (p < .05). These results support previous research showing beneficial effects of externally focused instructions on movement efficiency. 相似文献
999.
Michele Lastella Gregory Daniel Roach Shona Leigh Halson David Thomas Martin Nicholas Peter West Charli Sargent 《Journal of sports sciences》2015,33(3):293-299
Good sleep is critical for optimising recovery and athletic performance. Yet, few studies have investigated how athletes sleep before and during competition. The aim of this study was to determine whether such sleep is poorer than that before a usual training day. Twenty-one male endurance cyclists’ (age: 19.9 ± 1.7 years) sleep/wake behaviour was assessed using wrist activity monitors for 11 nights, including a six-night baseline training phase, three nights before competition and two nights during competition. Cyclists had less sleep on the night before competition (6.5 ± 0.9 h) and during the first night of competition (6.8 ± 0.8 h) than at baseline (7.4 ± 0.6 h). Cyclists also went to bed and woke up earlier during competition than at baseline. Competition schedules and competition itself can disrupt the sleep/wake behaviour of athletes during competition. Future investigations should examine sleep during three stages of competition (i.e. before, during and after competition). This will help coaches develop a greater understanding of how sleep changes during different phases of competition and enable them to plan post-competition training programmes to ensure appropriate rest and recovery is obtained. 相似文献
1000.
Max C. Stuelcken Daniel B. Mellifont Adam D. Gorman Mark G.L. Sayers 《Journal of sports sciences》2016,34(16):1516-1522
This study involved a systematic video analysis of 16 anterior cruciate ligament (ACL) injuries sustained by elite-level netball players during televised games in order to describe the game situation, the movement patterns involved, the player’s behaviour, and a potential injury mechanism. Eight of the ACL injuries were classified as “indirect contact” and eight as “non-contact”. Two common scenarios were identified. In Scenario A the player was jumping to receive or intercept a pass and whilst competing for the ball experienced a perturbation in the air. As a result the player’s landing was unbalanced with loading occurring predominantly on the knee of the injured side. In Scenario B the player was generally in a good position at ground contact, but then noticeably altered the alignment of the trunk before the landing was completed. This involved rotating and laterally flexing the trunk without altering the alignment of the feet. Apparent knee valgus collapse on the knee of the injured side was observed in 3/6 Scenario A cases and 5/6 Scenario B cases. Players may benefit from landing training programmes that incorporate tasks that use a ball and include decision-making components or require players to learn to cope with being unbalanced. 相似文献