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181.
As the collection and dissemination of “big data” become easier, we are exposed to increasing numbers of visuals, or infographics, that convey this data. Students are likely to interact with infographics through news, advertising, and social media platforms, but they may not have the skills in quantitative reasoning or visual literacy to effectively understand how data is employed or framed to tell particular stories. Teaching students about the tools, available data, and communication styles that infographics offer early in their coursework can provide them a basis on which to better develop a variety of analytic and communication tools throughout additional courses in their major field of study. Through the process of learning to locate, evaluate, and use data in infographics, students also become better consumers of data visualization. A series of scaffolded assignments that help accomplish this are detailed here. 相似文献
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ABSTRACTFor teachers seeking formal school leadership roles the key choices have been either the vice- principalship or the principalship. In Ontario, Canada, however, the principalship has traditionally been considered the premier leadership goal with the vice-principalship regarded as merely a necessary transitional step toward achieving the principalship. In this article, we consider the enactments of principals and vice-principals plus the common and unique work typically demanded of each position by examining how both roles came to fruition from a historical context. How principals and vice-principals’ work came to be what it currently is in Canada’s most populace province is a reflection of the prevailing economic, social, political, historical, and educational contexts and particular interests being advanced. Both engage in complex, purposeful work that requires excellent interpersonal strengths, strategic thinking, an inclusive leadership disposition and values, organisational change capacities, and the ability to make evidence-based decisions. As well, both are expected to work in complementary ways to advance students’ academic and social learning, yet despite the need for leadership synergies, principals often ‘lead’ while vice-principals are left to ‘manage’. While the principal’s role is expansive and more clearly defined, the role of the vice-principal has broadened over decades. We will investigate the history for preparing and developing vice principals in this context to learn about why they continue to be reactive, situationally contingent, and dependent on task delegation from the principal. Such role-based differences can contribute to high job satisfaction and role clarity for principals, but disappointment for vice-principals who wish to exercise greater leadership. 相似文献
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Although epidemiological data indicate that athletes are at increased risk of upper respiratory tract infection during periods of heavy training and the 1 - 2 week period following endurance race events, there is very limited information on the responses to football training and match-play. For several hours after heavy exertion, components of both the innate (e.g. natural killer cell activity and neutrophil oxidative burst activity) and adaptive (e.g. T and B cell function) immune system exhibit suppressed function. Although such responses to football training and competition do not appear to be as pronounced, variations in immune cell numbers and function are reported in professional footballers over the course of a season. Attempts have been made through nutritional means (e.g. glutamine, vitamins C and E, and carbohydrate supplementation) to attenuate immune changes following intensive exercise and thus lower the risk of upper respiratory tract infection. Carbohydrate supplementation during heavy exercise has emerged as a partial countermeasure and attenuates increases in blood neutrophil counts, stress hormones, and inflammatory cytokines, but has little effect on decrements in salivary IgA output or natural killer cell function. Animal research indicates that other nutritional components such as beta-glucan, quercetin, and curcumin warrant human investigations to determine if they are effective countermeasures to exercise-induced immune dysfunction. 相似文献
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Economic theory predicts that improvements in signaling of achievement generated by external exit examination systems will (1) result in students learning more and this in turn will (2) enable them to get better paying jobs. Since New York State had the only statewide curriculum-based external exit exam system in the nation in the early 1990s, hypothesis 1 predicts that New York students should out perform socio-economically comparable students from other states. Cross section analysis of mean 8th grade NAEP math scores and SAT-I scores found that New York students were indeed about one grade level equivalent ahead of where one would expect given their socio-economic background. A similar analysis of dropout rate data found no differences between New York and other states. Hypothesis 2 was tested in HSB and NLS-88 data. Female students who reported that their high school required they pass a minimum competency exam in order to graduate were paid significantly more after they graduated from high school. Men did not earn more but did get a higher hourly wage. 相似文献
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Through a nationwide survey of potential public library closures from 1999–2003 (the most recent federal dataset at the time of the study), the researchers assessed the reasons for public library closure, actions taken to alleviate possible loss of library services and resources, and the potential effects on users from the librarians' perspective. Geographic information systems (GIS) was used to analyze the demographics and socioeconomics of the geographic market areas around permanently closed library facilities and compared with national averages from the 2000 U.S. Census. The study found a variety of factors lead to closure; however, a lack of use, a sudden reduction in funding, and the opening of another library facility were the most common closure reasons. The actions taken by the community or library system to alleviate the loss of library services and resources depended on the circumstances of each closure. The geographic market areas around permanently closed facilities tended to include poorer and less educated patrons, and more renters than homeowners when compared to the national average from the 2000 U.S. Census. The study presents a methodology using GIS to describe libraries' geographic market areas and illustrates the need for further exploration into reasons for public library closures and the effects of facility site location, relocation, and permanent closure on potential users. 相似文献