The dyslexic copes     

Norman Phillips  George Bright M.D.  Richard Berg  Foster Nowell 《Annals of dyslexia》1974,24(1):170-173

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Heat production and storage are positively correlated with measures of body size/composition and heart rate drift during vigorous running     

Buresh R  Berg K  Noble J 《Research quarterly for exercise and sport》2005,76(3):267-274

The purposes of this study were to determine the relationships between: (a) measures of body size/composition and heat production/storage, and (b) heat production/storage and heart rate (HR) drift during running at 95% of the velocity that elicited lactate threshold, which was determined for 20 healthy recreational male runners. Subsequently, changes in skin and tympanic temperatures associated with a vigorous 20-min run, HR, and VO2 data were recorded. It was found that heat production was significantly correlated with body mass (r = .687), lean mass (r = .749), and body surface area (BSA, r = .699). Heat storage was significantly correlated with body mass (r = .519), fat mass (r = .464), and BSA (r = .498). The percentage of produced heat stored was significantly correlated with body mass (r = .427), fat mass (r = .455), and BSA (r = .414). Regression analysis showed that the sum of body mass, percentage of body fat, BSA, lean mass, and fat mass accounted for 30% of the variability in heat storage. It was also found that HR drift was significantly correlated with heat storage (r = .383), percentage of produced heat stored (r = .433), and core temperature change (r = .450). It was concluded that heavier runners experienced greater heat production, heat storage, and core temperature increases than lighter runners during vigorous running.  相似文献   

Initial-link duration and acquisition of preference in concurrent chains     

Berg ME  Grace RC 《Learning & behavior》2006,34(1):50-60

Initial-link response allocation in concurrent chains becomes less extreme as the absolute duration of the initial links increases (Fantino, 1969). The present study asked whether initial-link duration affected how quickly response allocation reached asymptote (i.e., acquisition of preference). Six pigeons were trained on a concurrent-chains procedure in which the terminal links were fixed-interval (FI) 8 sec FI 16 sec or FI 16 sec FI 8 sec and were reversed every 20 sessions. Across conditions, all possible combinations of transitions between variable-interval (VI) 8-sec (short) and VI 24-sec (long) initial-link schedules were studied. Overall, the rate of acquisition was faster when the durations of the initial links preceding the reversal were short rather than long, and when the durations of the initial links following the reversal were long rather than short. By contrast, initial-link duration had no effect on acquisition or asymptotic measures of temporal control of terminal-link responding. These results support the core principle of delay-reduction theory (Fantino, 1969) that the impact of a conditioned reinforcer varies directly with initial-link duration, but also suggest that temporal learning during the terminal links proceeds independently of initial-link duration. nt]mis|These data were presented at the annual meeting of the Association for Behavior Analysis, Boston, May 2004.  相似文献   

Not on the Same Page: Undergraduates' Information Retrieval in Electronic and Print Books     

Selinda Adelle Berg  Kristin Hoffmann  Diane Dawson   《The Journal of Academic Librarianship》2010,36(6):518

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Strengthening Agricultural Education and Training in sub-Saharan Africa from an Innovation Systems Perspective: A Case Study of Mozambique     

Kristin E. Davis  Javier Ekboir  David J. Spielman 《The Journal of Agricultural Education and Extension》2013,19(1):35-51

Abstract

This paper examines how post-secondary agricultural education and training (AET) in sub-Saharan Africa can contribute to agricultural development by strengthening the capacity to innovate—to introduce new products and processes that are socially or economically relevant to smallholder farmers and other agents. Using the AET system in Mozambique as a case study, this paper examines the role of AET within the context of an agricultural innovation system. This innovation systems perspective offers an analytical framework to examine technological change in agriculture as a complex process of interactions among diverse actors who generate, exchange, and use knowledge, conditioned by complex social and economic institutions. The paper argues that while AET is conventionally viewed as key to the development of human capital, it also has a vital role to play in building the capacity of organizations and individuals to transmit and adapt information, products and processes, and new organizational cultures and behaviors. The paper emphasizes the importance of improving AET systems by strengthening the capabilities of organizations and professionals; changing organizational cultures, behaviors, and incentives; and building innovation networks and linkages. The paper offers several recommendations to enhance the effectiveness of AET for agricultural innovation and development. Key reforms include aligning the mandates of AET organizations with national development aspirations; inducing change in the cultures of AET organizations through the introduction of educational programs and linkages beyond the AET system; and enhancing innovative individual and organizational capacity by improving incentives to forge stronger links between AET and other stakeholders.  相似文献   

Inquiry in Project-Based Science Classrooms: Initial Attempts by Middle School Students     

Joseph Krajcik  Phyllis C. Blumenfeld  Ronald W. Marx  Kristin M. Bass  Jennifer Fredricks  Elliot Soloway 《学习科学杂志》2013,22(3-4):313-350

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A Longitudinal View of the Liberal Arts Curriculum a Decade After Merger: A Multiple Case Study of Community Colleges in Connecticut,Kentucky, and Louisiana     

Ann Norton  Kristin Wilson 《Community College Journal of Research & Practice》2013,37(7):591-602

This study is an examination of the state of the liberal arts curriculum in community colleges in three geographic regions of the United States. From a constructivist paradigm and using globalization theory as a theoretical framework, this multiple case study examined faculty work life and administrative processes related to curriculum change in merged community and technical colleges. Through an examination of research on globalization, mergers, and trends in the general education and liberal arts curriculum, a gap in the literature emerged in the studies of community college curriculums after merger. This study considers whether the focus on workforce development and decrease in the transfer mission has diminished the liberal arts courses in the college curriculum. Research on liberal arts courses identified them as courses that emphasize higher order thinking and the development of intellectual skills needed to engage in a democratic society. If students are not exposed to these skills, it may have a detrimental effect on a democratic society. Study findings suggested that the English and communication curriculums are narrowing and the mission is more toward workforce skill preparation. Also, the changing demographics of today[#x02019]s community college students, as well as the ongoing budget constraints, create challenges and frustrations for faculty members.  相似文献   

Dietary Fat Intake and Exercise Among Two- and Four-Year College Students: Differences in Behavior and Psychosocial Factors     

Carla J. Berg  Lawrence C. An  Jasjit S. Ahluwalia 《Community College Journal of Research & Practice》2013,37(5):388-396

Given the demographic differences among two-year colleges and four-year universities and the relatively limited access to health education and campus-based health resources, this study compares the frequency of limiting dietary fat intake and exercising among two- and four-year college students. A total of 2,265 undergraduate students aged 18–25 at a two-year college and a four-year university completed a 108-item online survey in October 2008. We found that two-year college students had less confidence, motivation, and intention to engage in healthy behaviors and reported fewer close friends who exercise regularly but more friends who eat high-fat foods. After controlling for age, gender, ethnicity, and parental education, two-year (versus four-year) college students less frequently limited dietary fat (F(2,2227) = 21.64, p < .001) and less frequently exercised ≥ 20 minutes a day (F(5,2232) = 14.21, p < .001). Thus, research should focus on developing interventions targeting the different psychosocial factors that influence nutrition and exercise among two-year college students.  相似文献   

Correction to: Latent profiles of attitudes toward print and digital reading among adolescents     

Jang  Bong Gee  Ryoo  Ji Hoon  Smith  Kristin Conradi 《Reading and writing》2021,34(5):1141-1141

Reading and Writing - In the original publication, the article title was incorrectly published. The correct title has been given with this Correction.  相似文献   

Minds Under Siege: Cognitive Signatures of Poverty and Trauma in Refugee and Non-Refugee Adolescents     

Alexandra Chen  Catherine Panter-Brick  Kristin Hadfield  Rana Dajani  Amar Hamoudi  Margaret Sheridan 《Child development》2019,90(6):1856-1865

The impacts of war and displacement on executive function (EF)—what we might call the cognitive signatures of minds under siege—are little known. We surveyed a gender-balanced sample of 12- to 18-year-old Syrian refugees (n = 240) and Jordanian non-refugees (n = 210) living in Jordan. We examined the relative contributions of poverty, trauma exposure, posttraumatic stress, and insecurity to variance in inhibitory control and working memory. We observed associations between poverty and WM, suggesting that, even in populations exposed to substantial violence and fear, poverty is a specific pathway to WM deficit. We did not, however, find associations between EFs and exposures to trauma. Careful distinction between childhood adversities may illuminate which neurocognitive pathways matter for measures of cognitive function.  相似文献