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21.
Greg Tanaka Cindy Cruz 《International journal of qualitative studies in education》2013,26(1):137-153
Critical race theory now encompasses a polyphonic telling of story in which multiple, shifting identities are seen in relation to each other and situated within historical contexts. Locating the fictive voice of an administrator forced to deal with change at a small private university, the article begins with a flashback to confrontations demanding that he reexamine his positions in relation to both work and social life. The second part of the article is an analytic discussion of the voices of narrator and other actors and concludes with a critical reconceptualization of polyphony. Much in the same way that critical race theorists have injected story-telling into legal scholarship in order to deconstruct and then reconstruct knowledge, the authors urge education researchers to move away from methodologies and systems of analysis that derive from white liberal discourse and ironically serve to maintain the status quo by leaving in place conservative structures and reward mechanisms. 相似文献
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In this paper, we identify appropriate statistical methods for analysing categorical differences in discrete variables or 'performance indicators' resulting from performance analysis. The random mechanisms associated with discrete events do not follow a normal distribution; that is, the normal distribution is a continuous not a discrete probability distribution. We propose appropriate statistical methods based on two key discrete probability distributions, the Poisson and binomial distributions. Two approaches are proposed and compared using examples from notational analysis. The first approach is based on the classic chi-square test of significance (both the goodness-of-fit test and the test of independence). The second approach adopts a more contemporary method based on log-linear and logit models fitted using the statistical software GLIM. Provided relatively simple one-way and two-way comparisons in categorical data are required, both of these approaches result in very similar conclusions. However, as soon as more complex models or higher-order comparisons are required, the approach based on log-linear and logit models is shown to be more effective. Indeed, when investigating those factors and categorical differences associated with binomial or binary response variables, such as the proportion of winners when attempting decisive shots in squash or the proportion of goals scored from all shots in association football, logit models become the only realistic method available. By applying log-linear and logit models to discrete events resulting from notational analysis, greater insight into the underlying mechanisms associated with sport performance can be achieved. 相似文献
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In this holistic review of cycling science, the objectives are: (1) to identify the various human and environmental factors that influence cycling power output and velocity; (2) to discuss, with the aid of a schematic model, the often complex interrelationships between these factors; and (3) to suggest future directions for research to help clarify how cycling performance can be optimized, given different race disciplines, environments and riders. Most successful cyclists, irrespective of the race discipline, have a high maximal aerobic power output measured from an incremental test, and an ability to work at relatively high power outputs for long periods. The relationship between these characteristics and inherent physiological factors such as muscle capilliarization and muscle fibre type is complicated by inter-individual differences in selecting cadence for different race conditions. More research is needed on high-class professional riders, since they probably represent the pinnacle of natural selection for, and physiological adaptation to, endurance exercise. Recent advances in mathematical modelling and bicycle-mounted strain gauges, which can measure power directly in races, are starting to help unravel the interrelationships between the various resistive forces on the bicycle (e.g. air and rolling resistance, gravity). Interventions on rider position to optimize aerodynamics should also consider the impact on power output of the rider. All-terrain bicycle (ATB) racing is a neglected discipline in terms of the characterization of power outputs in race conditions and the modelling of the effects of the different design of bicycle frame and components on the magnitude of resistive forces. A direct application of mathematical models of cycling velocity has been in identifying optimal pacing strategies for different race conditions. Such data should, nevertheless, be considered alongside physiological optimization of power output in a race. An even distribution of power output is both physiologically and biophysically optimal for longer ( > 4 km) time-trials held in conditions of unvarying wind and gradient. For shorter races (e.g. a 1 km time-trial), an 'all out' effort from the start is advised to 'save' time during the initial phase that contributes most to total race time and to optimize the contribution of kinetic energy to race velocity. From a biophysical standpoint, the optimum pacing strategy for road time-trials may involve increasing power in headwinds and uphill sections and decreasing power in tailwinds and when travelling downhill. More research, using models and direct power measurement, is needed to elucidate fully how much such a pacing strategy might save time in a real race and how much a variable power output can be tolerated by a rider. The cyclist's diet is a multifactorial issue in itself and many researchers have tried to examine aspects of cycling nutrition (e.g. timing, amount, composition) in isolation. Only recently have researchers attempted to analyse interrelationships between dietary factors (e.g. the link between pre-race and in-race dietary effects on performance). The thermal environment is a mediating factor in choice of diet, since there may be competing interests of replacing lost fluid and depleted glycogen during and after a race. Given the prevalence of stage racing in professional cycling, more research into the influence of nutrition on repeated bouts of exercise performance and training is required. 相似文献
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Ageing anxiety is the expression of peoples' fear of ageing (Lynch, 2000). Despite greater longevity in the population, there is a lack of research into this aspect of life (Lasher &; Faulkender, 1993). This research explored fears of ageing across four dimensions: Fear of Old People, Physical Appearance, Psychological Concerns, and Fear of Losses. Three hundred and forty eight participants aged 18–88 participated in an online survey. Findings were: (a) men and women have different fears of ageing; (b) greater quality contact is related to less ageing anxiety; (c) poor health is related to greater ageing anxiety, (d) ageism, defined by Nelson (2005) as prejudice toward ageing is positively correlated with ageing anxiety. The implications of these findings are that better quality contact and more positive attitudes toward ageing are associated with less ageing anxiety. As such, possible key target areas in developing appropriate interventions are provided, with hope to prepare adults of all ages for the inevitable—life is a terminal illness, so enjoy while you can. 相似文献
28.
Australian universities over the last 25 years have been unified, internationalised, corporatised and become mass educational providers. This process is replicated globally as a response to rapid mass enrolments and marketisation. In the light of these changes, a corporate and managerial model has been identified, which has been the subject of growing discontent within the academic workforce. However, from a political economy perspective there is a lack of understanding on how and by what means academic labour has been commodified in this process. This paper, using Australia as its case study, argues that the managerial culture has alienated academics from their labour. This has resulted in them losing control over their skills and thus becoming disassociated from the educational purposes of their work. Higher education has been subjected to systemic regulatory governance that has fundamentally transformed the nature of academic labour. We contend that the regulatory state has reached so deep down into the university that academics have effectively become a de-professionalised and proletarianised labour force. 相似文献
29.
Greg Vass 《International Journal of Research & Method in Education》2017,40(2):137-153
This article engages with methodological concerns connected to insider education research and the ‘race-symmetry’ shared between the researcher and teacher participants. To do this, race critical reflexive strategies are utilized to show how and why this practice productively contributed to the knowledge about race making constructed in my study, a research process I describe as getting inside my insiderness. However, these reflexive practices also helped me to develop a deeper awareness of the potential for what I now describe as White shadows to infiltrate research of this type. The conceptualization of White shadows is a useful tool to describe research practices that silence or deflect attention away from issues connected to race, and hence, White shadows help expose concerns about the potential for Whiteness to remain protected by research. There are two interconnected aims of this paper. First, to illustrate the sort of race reflexive practices called for, and in doing so, to demonstrate why they are valuable and helpful in (educational) research. Second, I hope to encourage a rethink of the insider–outsider relationship that typifies ethnographic research by shifting attention to explore the inside of insider research. 相似文献
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