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Search Results: 1 - 10 of 457 matches for " McKenzie "
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The Effect of Tick Size on Testing for Nonlinearity in Financial Markets Data  [PDF]
Heather Mitchell, Michael McKenzie
Journal of Mathematical Finance (JMF) , 2011, DOI: 10.4236/jmf.2011.11001
Abstract: The discrete nature of financial markets time-series data may prejudice the BDS and Close Returns test for nonlinearity. Our estimation results suggest that a tick/volatility ratio threshold exists, beyond which the test results are biased. Further, tick/volatility ratios that exceed these thresholds are frequently observed in financial markets data, which suggests that the results of the BDS and CR test must be interpreted with caution.
Profile: Janis McKenzie
Janis McKenzie
Partnership : the Canadian Journal of Library and Information Practice and Research , 2010,
West Germany Forgets to Remember: Kurt Maetzig German Film Maker 1911-2012
Richard McKenzie
United Academics Journal of Social Sciences , 2012,
Abstract: This biography explores the life and achievements of German film maker Kurt Maetzig 1911-2012 and focuses in particular on the subject of the portrayal of the Holocaust in German film.
A More Lovingly Made World
McKenzie Wark
Cultural Studies Review , 2013,
Abstract: From a visit with his children to Makers' Fayre, in New York, the author considers the rise of maker culture and amateur labour in relation to consumption, capitalism and modernity, to provide an afterword to the collection on amateur economies.
On a Family of Norm Form Cubic Surfaces
Mckenzie West
Mathematics , 2015,
Abstract: Colliot-Th\'el\`ene and Sansuc conjectured that for cubic surfaces the Brauer-Manin obstruction explains every instance where the Hasse principle fails. Birch and Swinnerton-Dyer [BSD75] studied a general class of norm form cubic surfaces. They found, using the Brauer-Manin obstruction, that some of these surfaces did not satisfy the Hasse Principle. Using techniques developed in the ensuing 40 years, we show that a much wider class of norm form cubic surfaces have a Brauer-Manin obstruction, verifying infinitely many new examples of the CT-S conjecture.
Automorphisms of models of set theory and extensions of NFU
Zachiri McKenzie
Mathematics , 2013,
Abstract: In this paper we exploit the structural properties of standard and non-standard models of set theory to produce models of set theory admitting automorphisms that are well-behaved along an initial segment of their ordinals. $\mathrm{NFU}$ is Ronald Jensen's modifcation of Quine's `New Foundations' set theory that allows non-sets into the domain of discourse. The axioms $\mathrm{AxCount}$, $\mathrm{AxCount}_\leq$ and $\mathrm{AxCount}_\geq$ each extend $\mathrm{NFU}$ by placing restrictions on the cardinality of a finite set of singletons relative to the cardinality of its union. Using the results about automorphisms of models of set theory we separate the consistency strengths of these three extensions of $\mathrm{NFU}$. We show that $\mathrm{NFU} + \mathrm{AxCount}$ proves the consistency of $\mathrm{NFU} + \mathrm{AxCount}_\leq$, and $\mathrm{NFU} + \mathrm{AxCount}_\leq$ proves the consistency of $\mathrm{NFU} + \mathrm{AxCount}_\geq$.
地球科学进展 , 1990, DOI: 10.11867/j.issn.1001-8166.1990.06.0081
The Impacts of Physical Exercise on Stress Coping and Well-Being in University Students in the Context of Leisure  [PDF]
Jong-Ho Kim, Larry A. McKenzie
Health (Health) , 2014, DOI: 10.4236/health.2014.619296
Abstract: This study aims at investigating the in-depth information regarding impacts of physical exercise on psychological well-being in university students with an emphasis on coping with stress in the context of leisure. A qualitative research, based on interview to draw findings in an inductive way, was conducted. Nine university students (N = 9) in a large mid-west university took part in a face- to face, semi-structured interviews using ten open-ended questions with respect to benefits of leisure time physical exercise. The interview on the basis of phenomenological research examined what the participants experienced with leisure time physical exercise in conjunction with stress coping and mental health. Meaningful units of themes were induced with 24 initially drawn themes. These themes were reduced to 8 comprehensive constituent themes: self-efficacy, positive emotion, mind and body, health-behaviors, self-esteem, leisure, problem-focused coping, and positive expectancy. These reduced themes were finally boiled down to 6 integrated themes: positive emotion, unity of mind and body, heightened self-esteem, leisure, problem-focused coping, and self-regulation of health behavior. This research may shed a light in illuminating potential mechanism of how regular physical exercise is conducive to enhanced health behavior as well as effective stress coping in university students in the context of leisure. In particular, this research appears to be meaningful in suggesting that regular leisure-time physical exercise can lead to an effective problem-focused coping through elicitation of positive emotion.
After-School Physical Activity Interventions on Child and Adolescent Physical Activity and Health: A Review of Reviews  [PDF]
Yolanda Demetriou, Fiona Gillison, Thomas L. McKenzie
Advances in Physical Education (APE) , 2017, DOI: 10.4236/ape.2017.72017
Abstract: Schools are a critical setting for children to accrue recommended levels of physical activity, and after-school programmes are suggested to supplement existing programmes such as physical education. This review of reviews provides a comprehensive picture of the effects of after-school physical activity programmes on student physical activity and health. We completed a literature search of electronic databases and identified six existing systematic reviews and meta-analyses of the effects of after-school programmes on child and adolescent physical activity and health. We compared these reviews on numerous factors, including the databases searched, aims, outcome variables, physical activity measures, inclusion criteria, and quality of original studies. Our review of reviews identified considerable differences among the published reviews in the number and type of studies included, and in the conclusions drawn. In general, the reviews identified better outcomes when conducting the programmes in school rather than community settings, providing sessions on two or more days a week, and ensuring high programme attendance rates. Subgroup analyses indicated that girls were more receptive than boys to intervention programmes that promoted weight control. Additionally, there were some benefits for increasing physical activity levels among over-weight youth and boys. This review of reviews suggests there is currently only modest support of the benefits of after-school programmes on child and adolescent physical activity levels and body composition. Many questions remain unanswered, and there is further need to design, implement, and assess quality after-school interventions that target physical activity in diverse settings.
McKenzie,Kenneth J.;
Revista de Economía Institucional , 1999,
Abstract: this survey article provides a microeconomic perspective of institutional design and public policy, focusing on the way the relations between voters, politicians and bureaucrats produce efficients outcomes in public policy. it points out the relevance of information and monitoring costs, competition and the structural features of institutions in the search of efficient results, and the way social scientists explain the failures of the political and burocratic markets.
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