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121.
Workflow management systems (WfMS) offer a promising technology for the realization of process-centered application systems. A deficiency of existing WfMS is their inadequate support for dealing with exceptional deviations from the standard procedure. In the ADEPT project, therefore, we have developed advanced concepts for workflow modeling and execution, which aim at the increase of flexibility in WfMS. On the one hand we allow workflow designers to model exceptional execution paths already at buildtime provided that these deviations are known in advance. On the other hand authorized users may dynamically deviate from the pre-modeled workflow at runtime as well in order to deal with unforeseen events. In this paper, we focus on forward and backward jumps needed in this context. We describe sophisticated modeling concepts for capturing deviations in workflow models already at buildtime, and we show how forward and backward jumps (of different semantics) can be correctly applied in an ad-hoc manner during runtime as well. We work out basic requirements, facilities, and limitations arising in this context. Our experiences with applications from different domains have shown that the developed concepts will form a key part of process flexibility in process-centered information systems. 相似文献
122.
Andreas Bauer Manfred Broy Jan Romberg Bernhard Sch?tz Peter Braun Ulrich Freund Nuria Mata Robert Sandner Pierre Mai Dirk Ziegenbein 《Informatik - Forschung und Entwicklung》2007,48(2):45-57
Die Entwicklung eingebetteter Software für Automobile ist inh?rent komplex und vereint verschiedene
Entwicklungsphasen, mehrere fachliche Disziplinen, sowie verschiedene Akteure in beteiligten Unternehmen.
Der AutoMoDe-Ansatz zur Entwicklung automotiver Software beschreibt Systeme auf verschiedenen Abstraktionsebenen
und definiert schrittweise überg?nge zwischen diesen Ebenen. Neben der Definition geeigneter
Ebenen werden zur Modellierung von Echtzeitsystemen ein einheitliches Berechnungsmodell sowie dom?nenspezifische
Beschreibungstechniken verwendet. Automatisierte Anbindungen für Analyse und Synthese komplexer Softwaresysteme
mit dem Ziel eines konsistenzbetonten Entwicklungsprozesses wurden realisiert. Die beschriebenen Techniken
wurden in den Werkzeugprototypen AutoFocus integriert und im Zusammenspiel
mit einer Werkzeugkette demonstriert. 相似文献
123.
124.
Manfred Novak 《Zeitschrift für Hochschulrecht, Hochschulmanagement und Hochschulpolitik: zfhr》2008,7(2):49-56
In der bisherigen praktischen Umsetzung der Regelungen des UnivG 2002 zur Rektorswahl sind mehrfach Probleme aufgetreten, die vor allem vom suboptimalen Zusammenspiel zwischen vorschlagendem Senat und auswählendem Universitätsrat herrühren. Angesichts der für 2009 in Aussicht genommenen umfangreicheren Novellierung des UnivG 2002, sollen hier einige diesbezüglich zentrale Problemlagen behandelt werden. 相似文献
125.
Werner Hauser Manfred Novak 《Zeitschrift für Hochschulrecht, Hochschulmanagement und Hochschulpolitik: zfhr》2008,7(1):30-33
Ohne Zusammenfassung 相似文献
126.
Todd L. Richards Virginia W. Berninger Pat Stock Leah Altemeier Pamala Trivedi Kenneth R. Maravilla 《Reading and writing》2011,24(5):493-516
During fMRI imaging, 12 good and 8 poor writers aged 11 wrote a newly taught pseudoletter and a highly practiced letter. Both
letters were formed from the same components, but the pseudoletter had a novel configuration not corresponding to a written
English letter form. On the first fMRI contrast between the newly taught pseudoletter and highly practiced letter, based on
a group map, good and poor writers significantly activated many common regions; but the poor writers showed spatially more
extensive brain activation than did the good writers. The additional regions of significant activation may reflect inefficiency
in learning a new letter form. For the second contrast between the highly practiced and newly taught letters, individual brain
activation analyses, based on exact clusters, showed that good and poor writers differed significantly in activation only
in left fusiform. This individual fusiform activation correlated significantly with behavioral measures of automatic letter
writing and expressive orthographic coding. Multiple regression in which both individual fusiform activation and individual
orthographic coding were entered explained significant variance in written composition. Results are discussed in reference
to the role of the orthographic loop, from internal letter form to external letter writing by hand, in writing letters and
composing. The overall results are consistent with prior brain and behavioral studies of writing. 相似文献
127.
128.
Manfred Wagner 《High Ability Studies》1998,9(1):115-124
Mozart's work is quite unique on account of its quantitative and qualitative fullness within a short life. The explanatory patterns offered for this phenomenon range from a concentrated process of musical socialization, which comprised an exclusive preoccupation with music, to the specific fact of his travelling activity at that time (approx. 10 years of Mozart's life); to his good fortune in receiving, as a natural accompaniment in life, a musical education which was focused exclusively on high standards and enabled Mozart to become acquainted with almost the whole of the central European intelligentsia; to a consciously economic way of working which helped him to translate his experience of life into a work of art. These circumstances, which are ideal from the point of view of production, determined as they were by exceptional talent and by the environment, seemed to be so improbable to succeeding generations that the history of the reception of Mozart displays not only a reaction from a non‐academic perspective, but also designed a variety of diverging explanations for the (literally) unbelievable circumstances. This is probably why, ever since the start the nineteenth century, writings about Mozart have been not only contradictory, but have in part also provided no answers whatsoever to those questions which played such a major role in the biography. Consequently, the anomaly is valid not only for the process of production but also for that of reception. 相似文献
129.
Off-task behavior in the classroom was conceptualized as a manifestation of students pursuing goals they bring into the classroom aside from achievement goals. Regulation during on-task and off-task behavior in action conflict scenarios was elaborated on using the constructs motivational interference and flow. It was argued that achievement and well-being values that students hold can be determinants as well as outcomes of these conflict experiences. Data from 697 students (mean age 13.43) was collected at two time points within one school year. Results supported a reciprocal model in which value orientations (t1) lead to conflict variables (t2) as well as conflict variables (t1) to value orientations (t2). 相似文献
130.
Hintermair M 《Journal of deaf studies and deaf education》2006,11(4):493-513
In recent years, empowerment and resource orientation have become vital guidelines for many of the sciences. For the field of deaf education, it is also highly important to look carefully at these guidelines if we are to acquire a better understanding as regards both the situation of the parents involved and the development of the deaf and hard of hearing children themselves. A resource-oriented approach to deaf education has therefore proved especially helpful. If both the theoretical and practical aspects of educating deaf and hard of hearing children are to benefit, research on parental experience with deafness and research on the socioemotional development of the children must always be combined and studied in the context of resource availability. In a study of 213 mothers and 213 fathers of deaf and hard of hearing children, we used an array of different questionnaires (PSI, SDQ, SOC, F-SozU, etc.) to examine the correlation between parental resources, sociodemographic variables, parental stress experience, and child socioemotional problems by way of a path analysis model. The results show that high parental stress is associated with frequent socioemotional problems in the children, thus emphasizing the importance of a resource-oriented consulting and support strategy in early intervention, because parental access to personal and social resources is associated with significantly lower stress experience. Child development seems to profit enormously from a resource-oriented support concept. In addition, the results confirm two earlier findings: parents with additionally handicapped children are especially stressed and the child's communicative competence makes for a more sound prediction than its linguistic medium (spoken language or sign). The path models for mothers and fathers agree in all essential factors. The results are discussed with a view to their meaning for pedagogical practice, and recommendations for further research are given (longitudinal data, more representative samples, cochlear implant). 相似文献