排序方式: 共有39条查询结果,搜索用时 15 毫秒
1.
Stefan Jablonski Michael Schlundt und Hartmut Wedekind 《Informatik - Forschung und Entwicklung》2001,16(1):23-34
Zusammenfassung. Die klassische Unterscheidung zwischen Aufbau- und Ablauforganisation eines Unternehmens deutet auf eine getrennte rechnergestützte
Realisierung dieser beiden fundamentalen Komponenten einer Organisation hin. Dieser Beitrag unterstützt diese These, verweist
aber gleichzeitig auf die integrierende Bedeutung einer rechnergestützten Aufbauorganisationsverwaltung, welche unterschiedliche
Realisierungsformen der Ablauforganisation (unter anderem workflow-management und eCommerce) bedient. Die generelle Konzeption
und Umsetzung einer solchen Aufbauorganisationsverwaltung wird in diesem Beitrag vorgestellt.
Eingegangen am 14. Februar 2000 / Angenommen am 31. Mai 2000 相似文献
2.
3.
Hartmut Giest 《European Journal of Psychology of Education - EJPE》2004,19(1):45-64
Searching for an adequate method to investigate human development (especially the development of theoretical thinking) Vygotsky and his collaborators developed the causal genetic method. The basic idea of this method consists in the investigation of psychic functions and structures by their formation under controlled conditions (for instance via a formation experiment in classroom). But is this method also applicable in instructional settings using modern communications media?This paper is an attempt to find an answer to the question: By what means is the investigation of the formation of theoretical thinking realizable through the application of the causal-genetic method in instructional settings using hypermedia and distance learning? However, a closer examination of the question itself shows that there are three interrelated aspects, namely: the investigation and formation of theoretical thinking; distance learning using modern communications media; the causal-genetic method.It will be shown that in a formation experiment learning with a hyper-media-educational program, which is based on the theory of learning- activity, students reach a new level of cognitive development which is characterized by the growing ability of complex and dialectical thinking. 相似文献
4.
5.
Tenko Raykov George A. Marcoulides Siegfried Gabler Youngjun Lee 《Structural equation modeling》2017,24(3):468-474
A latent variable modeling method for testing criterion correlations with measurement error terms in multicomponent measuring instruments is outlined. The approach is based on an application of the Benjamini–Hochberg multiple testing procedure and can be used when assumptions of validity estimation related procedures need to be examined. The method also allows studying the extent to which criterion validity coefficients might be due to the relationship between a presumed underlying latent construct evaluated by a psychometric scale and a criterion variable, or could be a consequence of the relation between measurement error in the overall scale score and the criterion. The discussed procedure is widely applicable with popular latent variable modeling software, and is illustrated using a numerical example. 相似文献
6.
Zusammenfassung Zu der Frage, auf welche Weise sich Merkmale der sozialen Herkunft auf den Schulübertritt nach der Primarstufe auswirken,
wird in einer L?ngsschnittstichprobe 27 bayrischer Grundschulklassen der Verlauf des übertrittsprozesses untersucht, und zwar
von den Bildungsaspirationen der Eltern am Ende der dritten Jahrgangsstufe über die Schullaufbahnempfehlungen der Lehrkr?fte
bis hin zu den tats?chlichen Schulanmeldungen. Neben der Frage der Leistungsangemessenheit der Abschlussnoten und der erteilten
Schulempfehlungen werden die Herkunftseffekte im Entscheidungsverlauf vertieft analysiert. Die letztendlich resultierende
Schülerzuteilung zu den verschiedenen Bildungsg?ngen kovariiert deutlich mit der sozialen Herkunft der Schüler. Die vorgestellten
Analysen der einzelnen vorgelagerten Entscheidungsschritte verweisen dabei auf eine st?rkere Bedeutung prim?rer gegenüber
sekund?rer Einflusseffekte der sozialen Herkunft auf die Schulformzuteilung.
相似文献
7.
This article studies the difference between the criterion validity coefficient of the widely used overall scale score for a unidimensional multicomponent measuring instrument and the maximal criterion validity coefficient that is achievable with a linear combination of its components. A necessary and sufficient condition of their identity is presented in the case of measurement errors being uncorrelated among themselves and with a used criterion. An upper bound of the difference in these validity coefficients is provided, indicating that it cannot exceed the discrepancy between the maximal reliability and composite reliability indexes. A readily applicable latent variable modeling procedure is discussed that can be used for point and interval estimation of the difference between the maximal and scale criterion validity coefficients. The outlined method is illustrated with a numerical example. 相似文献
8.
Haimanot Habte Lemji Hartmut Eckstädt 《Journal of Zhejiang University. Science. B》2013,14(10):924-933
Evaluating the performance of a biotrickling filter for the treatment of wastewaters produced by a company manufacturing beer was the aim of this study. A pilot scale trickling filter filled with gravel was used as the experimental biofilter. Pilot scale plant experiments were made to evaluate the performance of the trickling filter aerobic and anaerobic biofilm systems for removal of chemical oxygen demand (COD) and nutrients from synthetic brewery wastewater. Performance evaluation data of the trickling filter were generated under different experimental conditions. The trickling filter had an average efficiency of (86.81±6.95)% as the hydraulic loading rate increased from 4.0 to 6.4 m3/(m2·d). Various COD concentrations were used to adjust organic loading rates from 1.5 to 4.5 kg COD/(m3·d). An average COD removal efficiency of (85.10±6.40)% was achieved in all wastewater concentrations at a hydraulic loading of 6.4 m3/(m2·d). The results lead to a design organic load of 1.5 kg COD/(m3·d) to reach an effluent COD in the range of 50–120 mg/L. As can be concluded from the results of this study, organic substances in brewery wastewater can be handled in a cost-effective and environmentally friendly manner using the gravel-filled trickling filter. 相似文献
9.
10.