1,974 research outputs found
231Pa and 230Th in surface sediments of the Arctic Ocean: Implications for 231Pa/230Th fractionation, boundary scavenging, and advective export
No full textDissolved and particulate 231Pa and 230Th in the Atlantic Ocean: constraints on intermediate/deep water age, boundary scavenging, and 231Pa/230Th fractionation
No full textStratified external mixing at moderate Richardson number
No full textStratified turbulent mixing remains an unsolved problem. Turbulent mixing is complicated by its intermittent nature, its highly vortical motion and the large range of scales of its coherent structures. In order to help reduce the problem to a more tractable form, we consider vortex rings as a reproducible, idealized form of a turbulent coherent structure of a defined length and velocity scale. We generate vortex rings in a stably stratified two-layer fluid of varying Richardson number and observe the vortex ring induced mixing. While previous work has looked at the effect of individual vortex rings on the stratified interface, we analyze the aggregate mixing induced over many vortex ring generations. Over successive vortex rings collisions, the mixing rate converges to a constant for a range of Richardson numbers
Policy Analysis of Special Immigrant Juvenile Status S.B. 873
Full text linkThe purpose of this paper was to conduct a policy analysis on California's S.B. 873 which was enacted in 2014 and focuses on unaccompanied immigrant minors. This population was narrowed to those entering the U.S. from Central American countries Guatemala, Honduras, and El Salvador. This analysis used an Intersectionality-Based Policy Analysis (IBPA) Framework. The results demonstrated that this population has multi-layered needs when going through immigration proceedings to which there are many barriers to being successful in achieving U.S. residency. Some of these barriers include, language barriers and lack of legal representation, economic hardships based on the lack of benefits available to them, and lack of trauma focused care. S.B. 873 challenges and provides money for legal representation to become more available, expands benefits that this population can qualify for, and provides a path to appoint guardianship. This policy analysis explored the gaps in S.B. 873 through an Intersectionality-Based Policy Framework. Through this analysis, the author offers recommendations for future care of unaccompanied minors as they deal with the immigration system.by Carolina Cardoz
Carbon biogeochemistry of the western Arctic: production, export, and ocean acidification
No full textAccelerated drawdown of meridional overturning in the late-glacial Atlantic triggered by transient pre-H event freshwater perturbation
No full textAuthor Correction: New perspectives on Neanderthal dispersal and turnover from Stajnia Cave (Poland)
Full text linkThe Author contributions section now reads:“W.N., A.N. and S.T. designed research; A.P., M.H., W.N., S.B., M.U., A.M., H.F., M.D.B., P.S., K.S., M.Ż., A.W., A.N. and S.T. performed research; A.P., M.H., W.N., S.B., M.U., A.M., H.F., M.D.B., P.S., K.S., M.Ż., A.W., A.N. and S.T. analysed data; A.P., M.H., S.T., W.N. and S.B. wrote the paper with the collaboration of all the co-authors.
Author Correction:A 41,500 year-old decorated ivory pendant from Stajnia Cave (Poland)
No full textCorrection to: Scientific Reports https://doi.org/10.1038/s41598-021-01221-6, published online 25 November 2021The original version of this Article contained errors in the author list where Marjolein D. Bosch was omitted from the author list, and Mikołaj Urbanowski was incorrectly listed as an author of the original Article, and has subsequently been removed.The Author contributions section now reads:“S.T. W.N. and A.N. conceived the project; S.T., W.N., A.P., M.B., S.C., M.D., H.F., A.M., M.D. B., D.P., M.P.R., C.M.R., V.S-M., G.M.S., P.S., M.S., K.S., A.V., F.W., H.W., A.W., M.Z., S.B., A.N., J-J. H., performed research; S.T., A.P., W.N., M.B., M.D.B., S.C., M.D., H.F., A.M., D.P., M.P.R., C.M.R., V.S-M., G.M.S., P.S., M.S., K.S., A.V., F.W., H.W., A.W., M.Z., S.B., A.N., J-J. H. analysed all archaeological data; S.T. and A.P. wrote the paper with the collaboration of all the co-authors.”The original Article and its accompanying Supplementary Information file have been corrected
Pisma Krzysztofa Kluka jako źródło leksykalne do Słownika języka polskiego S.B. Lindego
No full textThe aim of this paper is to discuss the writings by Krzysztof Kluk (1739–1796), a naturalist of the Enlightenment, the author of Dykcjonarz roślinny (Dictionary of plants) and guidebooks in the fi elds of botany, zoology, and mineralogy as lexical sources of Słownik języka polskiego (Dictionary of Polish) by S.B. Linde (LD). The paper presents an analysis of the material excerpted from Volumes 1 and 3 of LD, which has allowed the estimation that K. Kluk is discussed more frequently in the dictionary than J. Kochanowski, P. Kochanowski, J. Przybylski, and only slightly less frequently than M. Rej and W. Potocki. The material has been analysed also with the use of the method of semantic fields, which has enabled identification of the thematic circles that allow the determination of the angle from which S.B. Linde excerpted vocabulary from K. Kluk’s writings. The lexis from Kluk’s works in LD is not limited only to names of plants, animals or minerals; it covers also parts of the body, animal husbandry (e.g. horses, birds, bee-keeping, fishery), gardening, agriculture, animal diseases, metal and mineral working, transport, construction, home appliances, food, clothes, and social life
Voice Compression and Communications: Principles and Applications for Fixes and Wireless Channels
No full textUp-to-date, expert coverage of topics in wireless voice communications Voice communication is the most important facet of mobile radio service. Even when the predicted surge of wireless data and Internet services becomes a reality, voice will remain the most natural means of human communication. Voice Compression and Communications details issues in wireless voice communications and treats compression, channel coding, and wireless transmission as a joint subject. Part I covers background material, whereas Part II provides detailed information on both proprietary and standardized analysis-by-synthesis codecs, including the speech codecs of virtually all existing wireline-based and wireless systems. Parts III and IV discuss mainly research-based wideband, audio, as well as very low-rate schemes likely to find their way into future standards. Voice Compression and Communications describes fundamental concepts in a non-mathematical way early in the book for those with only a background knowledge of signal processing and communications. More advanced readers will find detailed discussions of theoretical principles, future concepts, and solutions to various specific wireless voice communications problems
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