1,722,822 research outputs found
What can a theory of normal speaking contribute to AAC?
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5780.pdf (Publisher’s version ) (Open Access)Also appeared in Newsletter of ISAAC, November 199
The relation between 5780 and 5797 diffuse interstellar bands, CH/CH
No full textCorrelations between column densities of neutral and molecular hydrogen and strengths of major 5780 and 5797 Å diffuse interstellar bands (DIBs) based on spectra of 66 OB stars were analyzed. We confirm that the 5797 Å DIB is more tightly correlated with column density of molecular hydrogen while the 5780 DIB – with that of atomic hydrogen. This leads to a reasonably tight relation between the molecular fraction of H2 and equivalent width ratio of the 5797 and 5780 major diffuse bands with correlation coefficient equal to 0.77 ± 0.05. Column densities of CH and CH+ molecules were used to analyze correlations between abundances of CH/CH+ molecules and strengths of the major 5780 and 5797 DIBs. The 5780 DIB is better correlated with the column density of methydyline cation than the 5797 DIB. A relation with correlation coefficient equal to 0.95 ± 0.02 based on precise column densities, between column densities of CH and H2 molecules, is also presented; in other words, the column densitiy ratio in the case of H2 and CH molecules in the ISM is equal to (2.01 ± 0.09) × 107
The 5780-diffuse Band In Peculiar Interstellar Clouds
No full textThis paper presents the spectra of a sample of galactic stars in which the broad diffuse interstellar band at 5780 angstrom is strongly attenuated in relation to their colour excess and the neighbour feature at 5797 angstrom is absent. The unusually large width of the 5780 band which is found in the direction of the Orion Trapezium stars is discussed in terms of intrinsic and Doppler broadening. The same clouds (apparently fragments of the Orion parent cloud) are known to produce peculiar extinction. It is suggested that the high density of collapsing clouds facilitates sticking of the diffuse band carriers to grain surfaces where they loose their identity reacting with the bulk of grain material. The process of sticking also alters the optical properties of grains
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[Diagnostics in Speech Language Pathology SPHS 5780 Lecture Six]
No full textA video of the sixth lecture for SPHS 5780: Diagnostics in Speech-Language Pathology, covering how to diagnose and assess the Disorders of Phonology/ Articulation. This record also covers the therapeutic methods that these disorders require. The professor also discusses the types of analysis the listener should do in order to diagnose their clients
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Diagnostics in Speech-Language Pathology SPHS 5780 Lecture One
No full textA video of the first lecture for SPHS 5780: Diagnostics in Speech-Language Pathology. The professor for the class goes over the basics of what goes into the diagnosis of a speech or language disorder, how to interact with patients and clients, types of testing
[Diagnostics in Speech Language Pathology SPHS 5780 Lecture Six]
No full textA video of the sixth lecture for SPHS 5780: Diagnostics in Speech-Language Pathology, covering how to diagnose and assess the Disorders of Phonology/ Articulation. This record also covers the therapeutic methods that these disorders require. The professor also discusses the types of analysis the listener should do in order to diagnose their clients
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Diagnostics in Speech-Language Pathology SPHS 5780 Lecture One
No full textA video of the first lecture for SPHS 5780: Diagnostics in Speech-Language Pathology. The professor for the class goes over the basics of what goes into the diagnosis of a speech or language disorder, how to interact with patients and clients, types of testing
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