Expert systems: aspects of and limitations to the codifiability of knowledge     

Robin Cowan   《Research Policy》2001,30(9)

The creation of expert systems is one way in which knowledge is codified. In creating an expert system, in general there are three aspects to the codification process: creating a model of the knowledge to be codified; creating the language in which to express the model; and writing messages representing the knowledge in that language. These aspects have different relative importance in different contexts. Referring to four case studies, the paper argues further that codification through creating expert systems is not uniformly successful and part of the variation has to do with the nature of the knowledge, or intellectual process or activity being codified, and the difficulty in creating the model. Activities with fixed goals and linear processes lend themselves very well to this form of codification. Processes of categorization and analogy, such as fault detection and repair, are partially successful, tending more often to create systems for experts. Processes involving balancing conflicting goals have, to date, tended to be unsuccessfully codified. These process types involve knowledge or understanding at deeper and deeper levels of abstraction of the overall processes and overarching goals. The more abstract and less concrete the knowledge involved in the task, the more difficult it is to codify it.  相似文献   

How to be a Brilliant Mentor – Edited by Trevor Wright     

John Cowan 《British journal of educational technology : journal of the Council for Educational Technology》2011,42(1):E17-E18

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Evaluating the effectiveness of academic development – Edited by Lorraine Stefani     

John Cowan 《British journal of educational technology : journal of the Council for Educational Technology》2011,42(2):E47-E48

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Two-stage screening for math problem-solving difficulty using dynamic assessment of algebraic learning     

Fuchs LS  Compton DL  Fuchs D  Hollenbeck KN  Hamlett CL  Seethaler PM 《Journal of learning disabilities》2011,44(4):372-380

The purpose of this study was to explore the utility of a dynamic assessment (DA) of algebraic learning in predicting third graders' development of mathematics word-problem difficulty. In the fall, 122 third-grade students were assessed on a test of math word-problem skill and DA of algebraic learning. In the spring, they were assessed on word-problem performance. Logistic regression was conducted to contrast two models. One relied exclusively on the fall test of math word-problem skill to predict word-problem difficulty on the spring outcome (less than the 25th percentile). The second model relied on a combination of the fall test of math word-problem skill and the fall DA to predict the same outcome. Holding sensitivity at 87.5%, the universal screener alone resulted in a high proportion of false positives, which was practically reduced when DA was included in the prediction model. Findings are discussed in terms of a two-stage process for screening students within a responsiveness-to-intervention prevention model.  相似文献   

Performativity,well‐being,social class and citizenship in English schools     

Pamela Fisher 《Educational studies》2011,37(1):49-58

A range of initiatives to promote well‐being and empowerment have been introduced into English schools. These ostensibly support the citizenship curriculum that seeks to foster a more active and engaged populace. Whilst children are being encouraged to view their own well‐being as a personal project (and as a badge of successful citizenship), this process is being undermined by an informal curriculum of citizenship, embedded within the culture of performativity, that is promoting a climate of misrecognition within schools. This form of “symbolic violence” (that affects working‐class families disproportionately) is encroaching into the private sphere, traditionally a potential refuge providing opportunities for the development of forms of well‐being that were not dependent on institutional endorsement. It is suggested that some of the counter‐hegemonic values developed in the face of marginalisation might usefully inform issues of citizenship and well‐being in schools in ways that would encourage genuinely empowered forms of citizenship.  相似文献   

Effects of continuing professional development on urban elementary students' knowledge     

Kulinna PH  McCaughtry N  Martin J  Cothran D 《Research quarterly for exercise and sport》2011,82(3):580-584

This study supports the important role teacher training programs can play in increasing physical education knowledge. In this project, teachers were able to increase students' understanding of critical physical activity/fitness knowledge through physical education instruction, without changing the physical education contact time. This link to student needs as well as the school's overall mission is a promising one for students and schools alike.  相似文献   

Are Elementary Preservice Teachers Floating or Sinking in Their Understanding of Buoyancy?     

Harrell  Pamela Espr&#;valo  Kirby  Benjamin  Subramaniam  Kartheyan  Long  Chris 《International Journal of Science and Mathematics Education》2022,20(2):299-320

International Journal of Science and Mathematics Education - This research study investigated conceptions about buoyancy held by 55 elementary preservice teachers enrolled in a science methods...  相似文献   

Traditional craftsmanship and technology of Jianyang black wares from Fujian,China     

Pamela B. Vandiver 《文物保护研究》2014,59(5):S169-S172

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Book reviews     

David Stoker  Richard W. Clement  Pamela K. Gilbert  Charles Johanningsmeier  Janet L. Flowers  Joan Mulholland  Richard C. Rowson  David Kaser  Thomas L. Bonn  Carl B. Holmberg  Chris R. Vanden Bossche  Beth Luey  Rebecca Moore Howard 《Publishing Research Quarterly》1995,11(1):78-101

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Teachers' perspectives on the challenges of teaching physical education in urban schools: the student emotional filter     

McCaughtry N  Barnard S  Martin J  Shen B  Kulinna PH 《Research quarterly for exercise and sport》2006,77(4):486-497

The purpose of this study was to analyze how the challenges of urban schools influence physical education teachers' emotional understanding and connections with their students and the implications on their teaching. Sixty-one elementary physical educators from an urban school district in the midwestern U.S. were interviewed multiple times (N = 136) over 3 years using interpretive methodology. Teachers reported five unique challenges that significantly shaped their thinking about students and their careers, along with strategies they used to overcome or manage those challenges. The challenges were: (a) insufficient instructional resources, (b) implementing culturally relevant pedagogy, (c) dealing with community violence, (d) integrating more games in curricula, and (e) teaching in a culture of basketball. Implications centered on the guilt-inducing nature of urban teaching, developing an informed and realistic vision of urban physical education, and the role of teacher preparation and professional development.  相似文献