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61.
A problem for a central crack in a plate subjected to plane strain conditions is investi-gated. Mode Ⅰ crack loading is created by a dynamic pressure pulse applied at a large distance from the crack. It was found that for a certain combination of amplitude and duration of the pulse applied, the energy transmitted to the sample has a strongly marked minimum, meaning that with the pulse amplitude or duration moving away from the optimal values, minimum energy required for initiation of crack growth increases rapidly. The results obtained indicate a possibility to optimise energy consumption of different industrial processes connected with fracture. Much could be gained in, for example, drilling or rock pounding where energy input accounts for the largest part of the process cost. Presumably further investigation of the effect observed can make it possible to predict optimal energy saving parameters, i.e. frequency and amplitude of impacts, for industrial devices, e.g. bores, grinding machines, and hence significantly reduce the process cost. The pre-diction can be given based on the parameters of the media fractured (material parameters, preva-lent crack length and orientation, etc.). 相似文献
62.
Phillip L. Waalkes Daniel Andrew DeCino Joe LeBlanc Monica Maria Phelps-Pineda Tiffany Somerville Stephen V. Flynn 《Counselor Education & Supervision》2023,62(1):52-63
We conducted a content analysis of generic qualitative counseling dissertations (GQR; N = 70), examining their methodological justifications, coherence, and trustworthiness. Dissertations authors often presented vague methodological justifications. Findings have implications for constructing methodological justifications, integrating relevant literature, and awareness of how GQR compares to other qualitative methodologies. 相似文献
63.
Thais Barbosa Monica Carolina Miranda Ruth F. Santos Orlando Francisco A. Bueno 《Reading and writing》2009,22(2):201-218
One of the most usual flaws that lead to literacy disability regards cognitive difficulties and alterations some children
present in the literacy process. Many studies have found alterations in phonological processing, more specifically in phonological
working memory (PWM) and phonological awareness (PA). Therefore, our aim was to identify alterations in skills of phonological
working memory, phonological awareness and language (semantic, syntactic and phonological aspects) of Brazilian children with
literacy disabilities (age 7–8). They were divided into two groups: (1) Group of Normal Literacy (NL); and (2) Group With
Literacy Disabilities (LD). The evaluation comprised tests that assessed general cognitive functions and the skills at stake.
The LD presented a poorer performance than the NL in the skills of PWM, PA and language aspects. The factor analysis showed
that these skills prevailed in differentiating the groups. Thus, children with literacy disabilities presented deficits in
phonological processing and language. These deficits seem to be a result of alterations of the phonological representations
and poor language skills that are prior to the literacy period. Consequently, we believe that the early identification of
these alterations can be very useful for the prevention of future literacy problems. 相似文献
64.
Monica McLean Andrea Abbas Paul Ashwin 《British Journal of Sociology of Education》2013,34(2):262-280
This paper illustrates how critical use of Basil Bernstein's theory illuminates the mechanisms by which university knowledge, curriculum and pedagogy both reproduce and interrupt social inequalities. To this end, empirical examples are selected from the findings of the ESRC-funded project ‘Pedagogic Quality and Inequality in University First Degrees' (RES-062-23-1438, November 2008–January 2012). The project investigated sociology-related social science degrees in four social science departments in universities in different positions in influential UK higher education league tables. A Bernsteinian lens throws fresh light on how university education might contribute to a more egalitarian society. 相似文献
65.
Monica Silvia Tatoiu 《欧洲特需教育杂志》2013,28(3):236-245
ABSTRACT The purpose of this paper is to give a closer view of the realities in special education in Romania, as part of the general reform in the educational system. It outlines the most important features of the past that have led to the present problems which Romania has to face, and presents the main categories of disadvantaged children in the context of social protection guaranteed by the present laws. Where available, data with respect to the years 1991 to 1993 are given. 相似文献
66.
Jennifer M. Foster Monica Leppma Tracy S. Hutchinson 《Counselor Education & Supervision》2014,53(3):190-203
Through in‐depth interviews, the authors examined 10 master's‐level counseling students' perceptions of gatekeeping. Case analysis resulted in 3 major themes pertaining to the necessity of gatekeeping, vital components, and counseling student characteristics. Implications of the findings are also discussed. 相似文献
67.
This paper contributes to the debate on the energy efficiency paradox according to which consumers fail to adopt cost-effective, energy efficient technologies over less efficient technologies and therefore fail to reduce energy consumption. Both traditional and behavioural theories are used to investigate the decision-making process of residential consumers with empirical evidence based upon a specially designed quasi-experimental survey of 784 households on the decision to connect to a district-heating system, a more energy efficient alternative to individual heating systems. The results suggest an internal discount rate of around 36 per cent for homeowners, a signal that consumers undervalue future energy costs. We also find the household’s decision to be negatively affected by years of payback up to around 7–8 years. Our findings suggest that neglecting consumer inattention and heuristics can lead to biases which cast doubt on the existence of the energy efficiency paradox. We believe that these results help to explain why some consumers are unlikely to invest in energy efficient technology, particularly those on low incomes. 相似文献
68.
Monica A. F. Lounsbery Kathryn A. Holt Shannon M. Monnat Brian Funk Thomas L. McKenzie 《Research quarterly for exercise and sport》2013,84(3):414-419
Purpose: Even though physical education (PE) is an evidence-based strategy for providing and promoting physical activity, alternative programs such as the Junior Reserve Officer Training Corps (JROTC) are commonly substituted for PE in many states. The purpose of this study was to compare student physical activity and lesson contexts during high school PE and JROTC sessions. Method: The System for Observing Fitness Instruction Time was used to assess PE and JROTC sessions (N = 38 each) in 4 high schools that provided both programs. Data were analyzed using t tests, negative binomial regression, and logistic regression. Results: Students engaged in significantly more moderate-to-vigorous physical activity during PE than during JROTC sessions and they were significantly less sedentary. Significant differences between the 2 program types were also found among lesson contexts. Conclusions: PE and JROTC provide substantially different content and contexts, and students in these programs engage in substantially different amounts of moderate-to-vigorous physical activity. Students in JROTC, and perhaps other alternative programs, are less likely to accrue health-supporting physical activity and engage in fewer opportunities to be physically fit and motorically skilled. Policies and practices for providing substitutions for PE should be carefully examined. 相似文献
69.
ABSTRACTThis article addresses how technology-enhanced learning (TEL) is implemented in higher education institutions. The study is based on data collected from a nationwide survey and semi-structured interviews with academic managers. The findings suggest that: (1) members of the academic management staff have limited knowledge of institutional strategies; (2) there is a gap between what academic managers believe they do to support and implement TEL and what other academic staff perceive them to actually do; and (3) TEL is seldom discussed during performance assessment reviews. In addition, the study reveals that academic managers have different understandings of the use of educational technology. Those differences appear to be closely related to the individual managers’ assessment of TEL’s role in supporting teaching. 相似文献
70.
Glenys Mann Karen Moni Monica Cuskelly 《International journal of qualitative studies in education》2016,29(7):964-979
Children with disability continue to experience disadvantage in their school lives; thus, the question of what makes up an optimal school life, and whether this is different for children with disability, becomes critical. This paper reports on research into parental views about an optimal school life and the usefulness of Social Role Valorization theory as a framework for exploring this issue. Six focus group interviews were used to collect data from 30 parents. Children of a variety of ages, with and without disability, were represented. All groups were similar in the aspects they regarded as optimal in a child’s school life. These fell into five categories: being connected, growth, personhood, basic needs, and happiness. Despite this similarity across groups, there were some notable differences in the detail; for example, parents of children with disability had a stronger focus on children being wanted, high expectations, and being seen as an individual. 相似文献