Automatic query formulations in information retrieval.

Modern information retrieval systems are designed to supply relevant information in response to requests received from the user population. In most retrieval environments the search requests consist of keywords, or index terms, interrelated by appropriate Boolean operators. Since it is difficult for untrained users to generate effective Boolean search requests, trained search intermediaries are normally used to translate original statements of user need into useful Boolean search formulations. Methods are introduced in this study which reduce the role of the search intermediaries by making it possible to generate Boolean search formulations completely automatically from natural language statements provided by the system patrons. Frequency considerations are used automatically to generate appropriate term combinations as well as Boolean connectives relating the terms. Methods are covered to produce automatic query formulations both in a standard Boolean logic system, as well as in an extended Boolean system in which the strict interpretation of the connectives is relaxed. Experimental results are supplied to evaluate the effectiveness of the automatic query formulation process, and methods are described for applying the automatic query formulation process in practice.     

Behavioral and Physiological Antecedents of Inhibited and Uninhibited Behavior

4-month-old infants were specifically selected for patterns of affective and motoric reactivity that were hypothesized to be associated with later inhibited and uninhibited behavior. Infants were classified as high on motor activity and negative affect, high on motor activity and positive affect, or low on motor activity and affect. Brain electrical activity was assessed in these infants at 9 months of age, and behavior toward novelty was observed at 14 months of age. Infants who were high on motor activity and negative affect exhibited greater right frontal EEG activation at 9 months of age and inhibited behavior at 14 months of age. Infants classified as high motor/high positive at 4 months of age exhibited uninhibited behavior at 14 months of age. No relations were found between frontal asymmetry at 9 months of age and inhibited behavior at 14 months of age. However, greater activation in both the left and right frontal hemispheres was associated with higher inhibition scores at 14 months of age. These findings are discussed in terms of the role that affective and physiological reactivity may play in the development of social behavior during toddlerhood.     

Innovation in curriculum: An overview

Innovation in curriculum is gaining its thrust from a new set of value priorities—humanism, concern for racial and socioeconomic minorities, support of pluralism and diversity, increased interest in affective development, education for the very young, and legitimization of the search for value. These priorities are coupled with new understandings of how learning takes place, which cast the learner in an active, responsible, self-actualizing role and, at the same time, support the development of precise, highly organized sets of learning materials designed to achieve clearly defined objectives as efficiently as possible. Implications of these factors are examined in relation to curriculum design, instructional materials, professional roles, and the need for in-service education.

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Résumé L'innovation des programmes d'étude est activée par une nouvelle échelle de priorités des valeurs: esprit d'humanisme, intérêt manifesté à l'égard des minorités raciales et socio-économiques, appui accordé au pluralisme et à la diversité, intérêt accru envers le développement affectif, éducation des très jeunes, et légitimisation de la recherche des valeurs. Ces priorités vont de pair avec de nouvelles connaissances sur le processus d'acquisition du savoir, connaissances qui lancent l'élève dans un rôle actif et responsable dans son épanouissement personnel et qui, en même temps, contribuent à la mise au point d'une série de textes éducatifs précis et hautement organisés conçus en vue de la poursuite, d'une manière aussi efficace que possible, de certains objectifs clairement définis. L'auteur étudie les répercussions provoquées par ces facteurs sur la conception des programmes, les textes d'étude, les rôles professionnels et la nécessité d'une éducation en cours d'exercice.

     

Diversity of spatial activities and parents' spatial talk complexity predict preschoolers' gains in spatial skills

Children's spatial activities and parental spatial talk were measured to examine their associations with variability in preschoolers' spatial skills (N = 113, M_age = 4 years, 4 months; 51% female; 80% White, 11% Black, and 9% other). Parents who reported more diversity in daily spatial activities and used longer spatial talk utterances during a spatial activity had children with greater gains in spatial skills from ages 4 to 5 (β = .17 and β = .40, respectively). Importantly, this study is the first to move beyond frequency counts of spatial input and investigate the links among the diversity of children's daily spatial activities, as well as the complexity of parents' spatial language across different contexts, and preschoolers' gains in spatial skills, an important predictor of later STEM success.     

Minds, Brains, and Education: Part II. Responding to the Commentaries

The present authors wrote a paper on cognitive neuroscience (i.e., Byrnes and Fox, 1998) that spawned a number of commentaries. In the present paper, they respond to these commentaries. Using a theme-based approach, they reveal an emerging consensus regarding the educational relevance of neuroscientific research.     

The Wisdom Project: virtual education in primary care

This article examines the development of the Wisdom Project, a pilot for the teaching of informatics to primary health care professionals, using an original educational model based on e-mail and Web pages. The article begins by placing the development of the Wisdom Project in the context of changes in medical education and training. The aims and objectives of Wisdom are outlined, and the methodologies for setting up and evaluating the project are described. The article then presents the results of the evaluation, including the identification of significant improvements in knowledge of CD ROMs (P = 0.01), e-mail (P = 0.03), Medline (P = 0.02), operating systems (P = 0.02), Web browsers (P = 0.003) and word processing (P = 0.03). Improvements in evidence-based practice (EBP) did not reach significance. Finally, a number of conclusions are presented, considering the lessons learnt for the future development of such projects.     

Crossing under the highway: youth-centered research as resistance to structural inequality

This article tells the story of two exploratory youth-centered participatory action research (PAR) projects to consider how youth-centered research can resist inequality. In this paper, I focus on the findings and process of two PAR projects that took place within one geographically isolated neighborhood in Brooklyn, New York. The studies focused on neighborhood experiences of educational inequality and everyday experiences of crossing the street in and out of the neighborhood. The process and findings of the research identified tensions and connections around the lived experiences of inequality. Ultimately we found the process of conducting research collaboratively and across generation was itself a form of resistance.