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Search Results: 1 - 10 of 216919 matches for " Patricia L. Weir "
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Adolescents’ Relationship between Physical Education and Longitudinal Physical Activity Trends  [PDF]
Alexandra Wiseman, Patricia Weir
Advances in Physical Education (APE) , 2017, DOI: 10.4236/ape.2017.73023
Abstract: With physical education (PE) being an avenue to be physically active and?learn about health and wellbeing, it is important to understand enrollment trends and physical activity (PA) behaviors among adolescents. The purpose of this study is to examine adolescents’ health profiles and gain an understanding of adolescents’ perspective of PE. The current study used mixed methodology to examine adolescents’ health profiles and gain understanding of their perspectives of PE. Part 1 identified relationships over a two-year period between: PE rating, physical activity (PA), and health variables using data from the National Longitudinal Survey of Children and Youth (NLSCY). Part 2 examined adolescents’ perspectives of PE through four focus groups.Overall, PE was preferred over other subjects by 78% of participants; and preferring PE predicted higher frequencies of PA, lower BMI, and higher self-esteem. Enrollment in high school PE was influenced by the environment, gender, course conflicts, and teacher influence.In summary, the majority of adolescents prefer PE;?it has an influence on health, and is an avenue for PA. Continued efforts need to be made to increase PE enrollment and participation to ensure the health of young people.
Universal Design: A Step toward Successful Aging
Kelly Carr,Patricia L. Weir,Dory Azar,Nadia R. Azar
Journal of Aging Research , 2013, DOI: 10.1155/2013/324624
Abstract:
Universal Design: A Step toward Successful Aging
Kelly Carr,Patricia L. Weir,Dory Azar,Nadia R. Azar
Journal of Aging Research , 2013, DOI: 10.1155/2013/324624
Abstract: The concept of aging successfully has become increasingly important as demographics shift towards an aging population. Successful aging has been defined to include (1) a low probability of disease and disease-related disability; (2) a high level of physical and cognitive functioning; and (3) an active engagement in life. The built environment can create opportunities or constraints for seniors to participate in social and productive activities. Universally designed spaces are more easily accessed and used by a spectrum of people without specialized adaptations. Thus, a universally designed environment creates opportunities for older adults to participate in these activities without the stigmatization associated with adapted or accessible designs. Providing older adults with specific universal design options (e.g., lever handle faucets) has the potential to increase the ease of completing activities of daily living, which promotes a continual engagement in life. Literature regarding universal design is promising; however, its theory requires further attention from professionals designing the built environment, evidence of the significance of its application from academics, and the embracement of its core principles from society. Overall, universal design has the potential to provide a stepping stone toward successful aging. 1. Introduction A rise in life expectancy and a decline in fertility rates have created a shift in demographics leading to an aging population [1–4]. Currently, Canada’s population of citizens 65 years of age and older is at a record high (14.8%; [3]). This older adult population has experienced a 14.1% growth in the past five years, with 60–64 year olds experiencing the greatest increase, followed by centenarians [3]. If this trend continues, seniors will account for nearly a quarter of the population by 2036 [4]. At that point, the number of older adults will surpass the number of children, a first in Canadian history [4]. These demographic trends span beyond Canadian borders and have been recognized globally [1]. As a result, successful aging has become an important concept worldwide [5]. Successful aging has been empirically defined to include (1) a low probability of disease and disease-related disability; (2) a high level of physical and cognitive functioning; and (3) an active engagement in life [6, 7]. To some extent, these components represent a hierarchical relationship, as it is suggested that the absence of disease and disability leads to a prolonged maintenance of physical and cognitive functioning, which enables a higher
Barriers Are Not the Limiting Factor to Participation in Physical Activity in Canadian Seniors
Kristy L. Smith,Kelly Carr,Alexandra Wiseman,Kelly Calhoun,Nancy H. McNevin,Patricia L. Weir
Journal of Aging Research , 2012, DOI: 10.1155/2012/890679
Abstract: The identification of barriers to physical activity and exercise has been used for many decades to explain exercise behavior in older adults. Typically health concerns are the number one barrier to participation. Data from CCHS-HA dataset (=20,875) were used to generate a sample of Canadians, 60
Biological control of Diatraea spp. (Lepidoptera: Pyralidae) in sugarcane crops in Central Venezuela
Weir L,Enrique H; Contreras,Williams; Gil de Weir,Karine;
Revista de Biología Tropical , 2007,
Abstract: entre los a?os 1990-1996, se evaluó la importancia de la mosca amazónica (melagonystilum minense) y de la avispa (cotesia flavipes) como controles biológicos de los perforadores de la ca?a de azúcar (diatraea saccharalis y diatraea rosa) en el centro de venezuela. durante el período de la zafra, seleccionamos aleatoriamente tallos de ca?a de azúcar que fueron abiertos para observar el número de perforaciones, hospedadores, proporción de hospedadores parasitados, proporción de hospedadores parasitados por la mosca amazónica o por la avispa. como consecuencia de las periódicas liberaciones de las moscas y las avispas criadas en el laboratorio, observamos una disminución pronunciada de la abundancia relativa de diatraea spp., pero no se obtuvo un efecto evidente de utilizar ambos parasitoides. la abundancia de diatraea spp. en presencia de ambos parasitoides fue similar a la observada durante los 45 a?os en que se utilizó únicamente m. minense como control biológico. sin embargo, m. minense probablemente sea el principal control biológico de esta plaga por ser más eficiente en la búsqueda de la misma y por ser un competidor más fuerte que c. flavipes.
Biological control of Diatraea spp. (Lepidoptera: Pyralidae) in sugarcane crops in Central Venezuela
Enrique H Weir L,Williams Contreras,Karine Gil de Weir
Revista de Biología Tropical , 2007,
Abstract: Entre los a os 1990-1996, se evaluó la importancia de la mosca amazónica (Melagonystilum minense) y de la avispa (Cotesia flavipes) como controles biológicos de los perforadores de la ca a de azúcar (Diatraea saccharalis y Diatraea rosa) en el centro de Venezuela. Durante el período de la zafra, seleccionamos aleatoriamente tallos de ca a de azúcar que fueron abiertos para observar el número de perforaciones, hospedadores, proporción de hospedadores parasitados, proporción de hospedadores parasitados por la mosca amazónica o por la avispa. Como consecuencia de las periódicas liberaciones de las moscas y las avispas criadas en el laboratorio, observamos una disminución pronunciada de la abundancia relativa de Diatraea spp., pero no se obtuvo un efecto evidente de utilizar ambos parasitoides. La abundancia de Diatraea spp. en presencia de ambos parasitoides fue similar a la observada durante los 45 a os en que se utilizó únicamente M. minense como control biológico. Sin embargo, M. minense probablemente sea el principal control biológico de esta plaga por ser más eficiente en la búsqueda de la misma y por ser un competidor más fuerte que C. flavipes.
Interspecific competition between Metagonystilum minense (Diptera: Tachinidae) and Cotesia flavipes (Hymenotera: Braconidae) parasitosis of sugarcane borers (Diatraea spp., Lepidoptera:Pyralidae)
Weir L.,Enrique H.; Sagarzazu,Luis;
Revista de Biología Tropical , 1998,
Abstract: we evaluated the effect of interspecific competition between m. minense and c. flavipes larvae on survival in both species and on the growth of m. minense. interspecific competition was evaluated by the inoculation of m. minense larvae (1 or 2 per host larvae: d. sacharalis) 1 to 5 days before or 3 to 8 days after the inoculation of c. flavipes eggs (one inoculation = 45 - 50 eggs). all experiments were done with ten replicas. we found a significant effect of interspecific competition on larval and pupal survival in both parasitoids and body weight in m. minense. m. minense dominated over c. flavipes, except when m. minense was inoculated 5 or more days after c. flavipes.
Interspecific competition between Metagonystilum minense (Diptera: Tachinidae) and Cotesia flavipes (Hymenotera: Braconidae) parasitosis of sugarcane borers (Diatraea spp., Lepidoptera:Pyralidae)
Enrique H. Weir L.,Luis Sagarzazu
Revista de Biología Tropical , 1998,
Abstract: We evaluated the effect of interspecific competition between M. minense and C. flavipes larvae on survival in both species and on the growth of M. minense. Interspecific competition was evaluated by the inoculation of M. minense larvae (1 or 2 per host larvae: D. sacharalis) 1 to 5 days before or 3 to 8 days after the inoculation of C. flavipes eggs (one inoculation = 45 - 50 eggs). All experiments were done with ten replicas. We found a significant effect of interspecific competition on larval and pupal survival in both parasitoids and body weight in M. minense. M. minense dominated over C. flavipes, except when M. minense was inoculated 5 or more days after C. flavipes. Evaluamos el efecto de la competencia interespecífica entre larvas de M. minense y C. flavipes en la supervivencia de la progenie de ambas especies y en el crecimiento de M. minense. La competencia interespecífica fue evaluada mediante la inoculación de larvas de M. minense (1 o 2 por larva del hospedador: D. saccharalis) 1 a 5 días antes o 3 a 8 días después de la inoculación de huevos de C. flavipes (una inoculación = 45 a 50 huevos). Se hicieron diez repeticiones de todos los experimentos. Encontramos un efecto significativo de competencia en la supervivencia larval y pupal en ambas especies parasitoides y en el peso corporal de M. minense. M. minense predominó sobre C. flavipes, excepto cuando M. minense fue inoculado 5 o mas días después de C. flavipes.
The Concept of Truth Regime
Lorna Weir
The Canadian Journal of Sociology , 2008,
Abstract: “Truth regime” is a much used but little theorized concept, with the Foucauldian literature presupposing that truth in modernity is uniformly scientific/quasi-scientific and enhances power. I argue that the forms of truth characteristic of our present are wider than Foucault recognized, their relations to power more various, and their historicity more complex. The truth regime of advanced modernity is characterized by multiple, irreducible truth formulae that co-exist and sometimes vie for dominance. A truth formula stabilizes a network of elements: a relation between representation and presentation (words and things), truth and non-truth, and the place of the subject in discourse. Our contemporary truth regime comprises radically heterogeneous truthful knowledges – science, governance, religion/politics, and common culture – that have distinct histories and relations to power.
An Indefinite Convection-Diffusion Operator With Real Spectrum
John Weir
Mathematics , 2007,
Abstract: We confirm rigorously the conjecture, based on numerical and asymptotic evidence, that all the eigenvalues of a certain non-self-adjoint operator are real.
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