7 resultados para Impact of compositional constraints-on correlation and covariance
em Brock University, Canada
Resumo:
Forty-five 12- and 13-year-old females attending Grade 7 in North York, Ontario were randomly selected from a group of 100 females who had volunteered to participate in a oneday hands-on workshop called It's Your Choice at Seneca College. The goals of this intervention were to broaden the career horizons of these students and to help them realize the need to continue mathematics and science through high school in order to keep occupational options unlimited. The young women were given a pre- and post-attitude survey to provide background information. In the month following participation in the workshop the students were interviewed in small groups (S students per group) to discover their perceptions of the impact of the workshop. The interviews revealed that participants felt that after the workshop their feelings of self-confidence increased, specifically with respect to working with their hands. Participants felt more aware of the usefulness and importance of the study of mathematics, science and technology, They also felt that It's Your Choice increased their interest in careers in these domains and helped them to see that these careers are viable choices for females. The interviews also revealed that many of the participants felt that in this society their roles and their choices were influenced and probably limited by the fact that they are female.
Resumo:
This research studioo the effect of integrated instruction in mathematics and~ science on student achievement in and attitude towards both mathematics and science. A group of grade 9 academic students received instruction in both science and mathematics in an integrated program specifically developed for the purposes of the research. This group was compared to a control group that had received science and mathematics instruction in a traditional, nonintegrated program. The findings showed that in all measures of attitude, there was no significant difference between the students who participated in the integrated science and mathematics program and those who participated in a traditional science and mathematics program. The findings also revealed that integration did improve achievement on some of the measures used. The performance on mathematics open-ended problem-solving tasks improved after participation in the integrated program, suggesting that the integrated students were better able to apply their understanding of mathematics in a real-life context. The performance on the final science exam was also improved for the integrated group. Improvement was not noted on the other measures, which included EQAO scores and laboratory practical tasks. These results raise the issue of the suitability of the instruments used to gauge both achievement and attitude. The accuracy and suitability of traditional measures of achievement are considered. It is argued that they should not necessarily be used as the measure of the value of integrated instruction in a science and mathematics classroom.
Resumo:
In order to fully understand an organism's behaviours the interactions between multiple enemies or selective pressures need to be considered, as these interactions are usually far more complex than the simple addition of their effects in isolation. In this thesis, I consider the impact of multiple enemies (fish predators and parasites) on the behaviour of three larval anurans (Lithobates sylvaticus, L. clamitans and L. catesbeianus). I also determine whether species that differ in life-histories and habitat preferences possess different antipredator mechanisms and how this affects species responses to multiple enemies. I show that the three Ranid larvae respond differently to the trade-off imposed by the presence of both fish predators and trematode parasites within the environment. The two more permanent pond breeders (L. clamitans and L. catesbeianus) increased activity when in the combined presence of predators and parasites. In contrast, the temporary pond breeder (L. sylvaticus) decreased activity in the combined presence of predator and parasites, in the same manner as they responded to fish alone. Further, the presence of fish along with parasites increased the susceptibility of both L. sylvaticus and L. clamitans to trematode infection, whereas parasite infection in L. catesbeianus was unaffected by the presence of fish. A second experiment to assess palatability of the three anuran species to fish, revealed a range of palatabilities, with L. catesbeianus being least palatable, L. clamitans being somewhat unpalatable, and L. sylvaticus being highly palatable. This result helps to explain the species differences in tthe observed behaviour to the combined presence of fish and parasites. In conclusion, the results from this study highlight the importance of considering multiple selective pressures faced by organisms and how this shapes their behaviour.
Resumo:
This study examined the use of mindfulness meditation in educator growth and professional development. The purpose was to create recommendations for an effective mindfulness meditation practice for educators. To this end, as the researcher is an educator as well as an experienced mindfulness meditation practitioner, the research methodology was self-study through narrative inquiry. The exploration of mindfulness meditation on the researcher’s personal and professional development was viewed through the lenses of Maslow’s hierarchy of needs and Mezirow’s transformational learning theory. These theories provided an analytical framework that guided this research. Themes were drawn from the exploration and connected with academic literature. The results were a mindfulness meditation framework for educators that is based on the Socratic Method, and utilizes the conceptual frameworks of Maslow’s hierarchy of needs and Mezirow’s transformational learning theory.
Resumo:
This research identified and explored the various responses often women Registered Nurses displaced from full-time elnployment as staff nurses in general hospitals in southern Ontario. These nurses were among the hundreds in Ontario who were displaced between October 1991 and October 1995 as a result of organizational downsizing and other health care reform initiatives. The purpose ofthis research was to document tIle responses of nurses to job displacement, and how that experience impacted on a nurse's professional identity and her understanding of the nature and utilization of nursing labour. This study incorporated techniques consistent with the principles of naturalistic inquiry and the narrative tradition. A purposive sample was drawn from the Health Sector Training and Adjustment Program database. Data collection and analysis was a three-step process wherein the data collection in each step was informed by the data analysis in the preceding step. The main technique used for qualitative data collection was semistructured, individual and group interviews. Emerging from the data was a rich and textured story ofhow job displacement disrupted the meaningful connections nurses had with their work. In making meaning of this change, displaced nurses journeyed along a three-step path toward labour adjustment. Structural analysis was the interpretive lens used to view the historical, sociopolitical and ideological forces which constrained the choices reasonably available to displaced nurses while Kelly's personal construct theory was the lens used to view the process of making choices and reconstruing their professional identity.
Resumo:
Educational administrators are expected to relate social justice considerations to their actions and to the theoretical foundations of their practice. At the same time, social constructs-including those related to administrative practice, social justice, and societal norms-are important in helping administrators understand, frame, and describe administrative issues. Furthermore, as part of socially constructed language, these constructs represent discursive practices and accepted ways of knowing, valuing, and experiencing the world. Drawing on the multidimensional methods of critical discourse analysis as articulated in the writings of Michel Foucault, Norman Fairclough, and Allan Luke, and using deconstruction as a strategic device for reading and interpreting texts, this exploratory qualitative study examined how administrator knowledge, values, and experiences impact their understanding of social justice within the context of delivering social justice for students who experience bullying. Study findings reveal that school administrators interpreted social justice as equitable distribution, action, and results; fairness; and equity. Constructs embedded in these interpretations assumed common things such as universal acceptance of norms of social relations and conveyed administrator intent to secure the kind of social relations that enabled individuals to enjoy greater equality within existing social arrangements.
Resumo:
This research identified and explored the various responses of ten women Registered Nurses displaced from full-time employment as staff nurses in general hospitals in southern Ontario. These nurses were among the hundreds in Ontario who were displaced between October 1991 and October 1995 as a result of organizational downsizing and other health care reform initiatives. The purpose of this research was to document the responses of nurses to job displacement, and how that experience impacted on a nurse's professional identity and her understanding of the nature and utilization of nursing labour. This study incorporated techniques consistent with the principles of naturalistic inquiry and the narrative tradition. A purposive sample was drawn from the Health Sector Training and Adjustment Program database. Data collection and analysis was a three-step process wherein the data collection in each step was informed by the data analysis in the preceding step. The main technique used for qualitative data collection was semistructured, individual and group interviews. Emerging from the data was a rich and textured story of how job displacement disrupted the meaningful connections nurses had with their work. In making meaning of this change, displaced nurses journeyed along a three-step path toward labour adjustment. Structural analysis was the interpretive lens used to view the historical, sociopolitical and ideological forces which constrained the choices reasonably available to displaced nurses while Kelly's personal construct theory was the lens used to view the process of making choices and reconstruing their professional identity.