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Influencing Factors in Speech Quality Assessment using Crowdsourcing
This book evaluates the impact of relevant factors affecting the results of speech quality assessment studies carried out in crowdsourcing. The author describes how these factors relate to the test structure, the effect of environmental background noise, and the influence of language differences. He details multiple user-centered studies that have been conducted to derive guidelines for reliable collection of speech quality scores in crowdsourcing. Specifically, different questions are addressed such as the optimal number of speech samples to include in a listening task, the influence of the environmental background noise in the speech quality ratings, as well as methods for classifying background noise from web audio recordings, or the impact of language proficiency in the user perception of speech quality. Ultimately, the results of these studies contributed to the definition of the ITU-T Recommendation P.808 that defines the guidelines to conduct speech quality studies in crowdsourcing.
Resident Commissioner, Santiago Iglesias and His Times
"An extensive historical journey and an analysis of the political, economic and social problems of Puerto Rico at the end of the 19th Century and the beginning of the 20th Century are the setting for an interesting biography of Santiago Iglesias Pantin, Resident Commissioner for Puerto Rico in Washington."
Porto Rico Reports
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The Second Slavery
"Slavery throughout the capitalist world-economy expands. The old zones in one way or another reach their limits and the new zones break through: to become part of the new division of labor (in the 19th century). In that sense The Second Slavery would encompass both decline and renewal of slaveries. I never intended the idea to apply just to Cuba, Brazil, and the cotton South as some people seem to take it. For me it is a concept of world economy and Cuba, Brazil, and the South are the obvious examples of those zones that break through. They permit us to think about slavery in a more dynamic way, but there is much more work to be done. From this perspective I would be more inclined to includ...
Register of the departament of state
Register containing a list of persons employed in the department and in the diplomatic, consular and territorial service of the United States, with maps showing where the ministers and consuls are resident abroad : also a list of the diplomatic officers
