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Peer reviewedJones, Karen Sparck – Journal of Documentation, 1979
The present experiments were designed to study the effects of search term weighting based on very limited relevance information, supplied, for example, by one or two relevant documents. The tests simulated iterative searching as in an on-line system and show that even very little relevance information can be extremely valuable. A list of…
Descriptors: Experiments, Graphs, Information Retrieval, Relevance (Information Retrieval)
Peer reviewedWang, Marilyn D.; Bilger, Robert C. – Journal of the Acoustical Society of America, 1973
Descriptors: Acoustic Phonetics, Artificial Languages, Auditory Perception, Consonants
Direct linkButtemer, Helen – Science and Children, 2006
It has been a practice at the University of Washington to begin their workshops on investigative sciences for preservice and inservice K-8 teachers with the discussion of variables. The teaching of the concepts of variables is important, as it provides students with the opportunity to understand other aspects of an investigation, such as the use…
Descriptors: Investigations, Career Choice, Inquiry, Experiments
Peer reviewedGehlback, Roger D.; Partridge, M. J. – Instructional Science, 1984
Describes three experiments measuring changes in children's social speech which used the presence or absence of partitions allowing partial visual contact to alter verbal communication contingencies between players. Altered levels of speech and specificity confirm importance of physical environmental factors in regulation of children's play. (MBR)
Descriptors: Data Analysis, Early Childhood Education, Educational Research, Experiments
Download full textBecker, David S.; Pyrce, Sharon R. – 1977
The goal of this project was to find ways of enhancing the efficiency of searching machine readable data bases. Ways are sought to transfer to the computer some of the tasks that are normally performed by the user, i.e., to further automate information retrieval. Four experiments were conducted to test the feasibility of a sequential processing…
Descriptors: Algorithms, Bibliographic Coupling, Cluster Grouping, Computers
Han, Mieko S. – 1968
This study is the sixth in the series "Studies in the Phonology of Asian Languages." A phonetic and phonemic analysis of the three complex nuclei of Vietnames (Hanoi dialect), spelled (1) ye-, -ie-, -ia, (2) -u'o'-, -u'a, and (3) -uo-, -ua, was carried out using the sound spectrograph. The relative domains of the target qualities of the…
Descriptors: Acoustic Phonetics, Articulation (Speech), Consonants, Distinctive Features (Language)
Han, Mieko S.; Weitzman, Raymond S. – 1967
This study, the fifth in the series "Studies in the Phonology of Asian Languages," aims to describe those acoustic features involved in the distinction of Korean stop consonants, using the sound spectrograph and pitch extractor as research tools. The report specifically deals with voice onset time associated with weak and strong stops and the…
Descriptors: Acoustic Phonetics, Articulation (Speech), Consonants, Distinctive Features (Language)
