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1.
Otto Rauh 《Informatik - Forschung und Entwicklung》1995,10(3):128-138
Zusammenfassung. Traditionelle und deduktive Informationssysteme werden heute immer noch isoliert voneinander modelliert und implementiert.
Für die meisten Benutzer sind jedoch Systeme wichtig, die ihren allt?glichen Informationsbedarf decken und darüber hinaus
deduktive F?higkeiten besitzen. Der bekannte Entity-Relationship-Ansatz zur konzeptionellen Datenmodellierung wird in dieser
Arbeit so erweitert, da? damit solche integrierten Systeme modelliert werden k?nnen. Au?erdem wird eine Klassifizierung ableitbarer
Daten eingeführt, die dem Analytiker Hilfestellung bei der Frage gibt, welche ableitbaren Daten bei der Modellierung berücksichtigt
werden sollen und welche nicht.
Eingegangen am 2. November 1994 / Angenommen am 30. M?rz 1995 相似文献
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3.
Anne E. Rauh 《New Review of Academic Librarianship》2016,22(2-3):315-324
ABSTRACTThis case study will take readers through the planning and publication process of a collaborative departmental library blog at Syracuse University, which is a large private, non-profit research intensive university located in central New York State. It will provide an overview of the history of the project and the mission of the blog. It will describe the technical aspects, developing a publication schedule, and the editorial responsibilities of maintaining the blog. The impact of the blog is documented. The blog has raised awareness of the librarians' expertise and this is explored alongside how posts have contributed to a number of wider conversations in librarianship. 相似文献
4.
Hellgard Rauh 《European Journal of Psychology of Education - EJPE》1989,4(2):161-173
Recent psychological research on infants and newborns led to discoveries of early competencies in young infants hitherto unbelieved by most scientists and difficult to account for in traditional models of child development. On the other hand, accumulated empirical longitudinal evidence challenged long-held preconceptions of the enduring impacts of early experience on later development. The risk concept, adapted from pediatrics and psychiatrics, was introduced with the expectation of identifying those subgroups of infants that are of increased risk of later behavioural or developmental maladaptation. The risk concept, however, turned out to be imprecise, having too many different meanings, being too abstract, and applicable only to populations or groups, not to individuals. Combinations of the risk concept with recently developed more sophisticated models of early development, such as transactive and systemic models of development, include such concepts as vulnerability/resilience as stable personality characteristics, protection or risk as setting characteristics, and coping in the face of actual stress as situational process variables. Implications for prevention, intervention and early education are discussed with respect to some selected groups of infants considered at-risk. 相似文献
5.
Psychosocial Attributes and Life Experiences of Disadvantaged Minority Mothers: Age and Ethnic Variations 总被引:1,自引:0,他引:1
Gail A. Wasserman Virginia A. Rauh Susan A. Brunelli Maritza Garcia-Castro Belkis Necos 《Child development》1990,61(2):566-580
This study examined age and ethnic differences in psychosocial factors among hispanic (n = 210) and black (n = 73) low-income mothers within 2 days after delivery. The sample included 45 black and 99 hispanic adolescents (less than 19 years) and 139 adult controls (greater than or equal to 20 years) giving birth on the service ward at a large metropolitan hospital, excluding mothers and infants with high parity or adverse perinatal conditions. Multivariate and univariate analyses, with parity covaried, revealed age effects including earlier menarche, more school grade retention, and more perceived social support among teens. No age differences were found in child-rearing attitudes, self-esteem, or depressive symptoms. Black mothers reported more social support, higher self-esteem, and less strict child-rearing attitudes than hispanics. Analyses within the hispanic sample revealed Dominican/Puerto Rican group differences in measures of family structure and child-rearing attitudes, but only small differences in social support. Ethnocultural differences between blacks and hispanics and between the two hispanic subgroups are considered in relation to the process of acculturation. 相似文献
6.
Melbourne F. Hovell C. Richard Hofstetter James F. Sallis Mitchell J. D. Rauh Elizabeth Barrington 《Research quarterly for exercise and sport》2013,84(4):425-434
Abstract This study was designed to identify correlates of change in walking for exercise. Respondents to a random sample mailed exercise survey were asked to complete a follow-up questionnaire 24 months after the first. Responses were obtained from 1,739 adults, reflecting an 86.6% return rate. Nonrespondents did not differ from respondents for baseline level of walking for exercise. Respondents overrepresented Caucasian and middle to high education (or income) adults. Residualized measures of change in walking for exercise served as the dependent variable, adjusted for baseline walking. Similarly, key independent variables, subject to change over time, were included after residualization. At both baseline and 24 months follow-up, adults walked for exercise an average of just under 1 hour per week, and 23.5% of the initially active adults ceased walking for exercise at 2 years. Multiple regression analyses explained more variance in walking for exercise among women than men. Change in dynamic variables such as friend's support and vigorous physical activity accounted for most of the explained variance. Results suggest that dynamic variables may need to be sustained to maintain walking for exercise. The limited explained variance suggests that more precise measures and additional determinants of walking for exercise need to be identified. 相似文献
7.
Otto Rauh 《Informatik - Forschung und Entwicklung》1997,12(3):117-127
Zusammenfassung. Redundante Komponenten in Entity-Relationship-Schemata führen zu Speicherverschwendung und Fehlern bei der Nutzung der aus
dem Schema gewonnenen Datenbanken. Zwischen Schemaredundanz und dem Konzept der ableitbaren Komponenten besteht eine enge
Verbindung, denn redundante Schemakomponenten sind stets ableitbar. Andererseits ist nicht jede ableitbare Komponente auch
redundant. Es wird deshalb zun?chst das Verh?ltnis zwischen redundanten und ableitbaren Komponenten diskutiert und eine Klassifizierung
eingeführt, welche die Modellierer bef?higt, entbehrliche von nicht entbehrlichen Komponenten zu unterscheiden. Eine spezielle
Art ableitbarer Komponenten, die Verkettung von Beziehungsarten, wird anschlie?end mit allen ihren Erscheinungsformen vorgestellt.
Au?erdem werden Methoden diskutiert, die helfen k?nnen, Verkettungen aufzudecken.
Eingegangen am 30. Mai 1996 / Angenommen am 8. April 1997 相似文献
8.
M F Hovell C R Hofstetter J F Sallis M J Rauh E Barrington 《Research quarterly for exercise and sport》1992,63(4):425-434
This study was designed to identify correlates of change in walking for exercise. Respondents to a random sample mailed exercise survey were asked to complete a follow-up questionnaire 24 months after the first. Responses were obtained from 1,739 adults, reflecting an 86.6% return rate. Nonrespondents did not differ from respondents for baseline level of walking for exercise. Respondents overrepresented Caucasian and middle to high education (or income) adults. Residualized measures of change in walking for exercise served as the dependent variable, adjusted for baseline walking. Similarly, key independent variables, subject to change over time, were included after residualization. At both baseline and 24 months follow-up, adults walked for exercise an average of just under 1 hour per week, and 23.5% of the initially active adults ceased walking for exercise at 2 years. Multiple regression analyses explained more variance in walking for exercise among women than men. Change in dynamic variables such as friend's support and vigorous physical activity accounted for most of the explained variance. Results suggest that dynamic variables may need to be sustained to maintain walking for exercise. The limited explained variance suggests that more precise measures and additional determinants of walking for exercise need to be identified. 相似文献
9.
Thomas M. Achenbach Vicky Phares Catherine T. Howell Virginia A. Rauh Barry Nurcombe 《Child development》1990,61(6):1672-1681
We compared 24 low-birthweight subjects of an experimental intervention (LBWE), 32 no-treatment controls (LBWC), and 37 normal birthweight (NBW) subjects. The intervention involved 7 hospital sessions and 4 home sessions in which a nurse helped mothers adapt to their LBW babies. At age 7, LBWE scored significantly higher than LBWC on the Kaufman Mental Processing Composite (p less than .001), Sequential (p = .02), and Simultaneous (p = .001) Scales, after statistical adjustments for socioeconomic status. LBWE did not differ from NBW (F less than 1). These results bear out a divergence between the LBWE and LBWC that first became statistically significant at age 3. The findings suggest that the intervention prevented cognitive lags among LBW children, and that long-term follow-ups are needed to evaluate the developmental effects of efforts to overcome major biological and environmental risks. 相似文献
10.
Heights, weights, and obesity in urban school children 总被引:1,自引:0,他引:1