1,721,148 research outputs found
Ninth Annual Barry D. Riccio Lecture - Satchel Paige and Black Baseball in the Rethinking of the Civil Rights Movement
Full text linkThe EIU History Department presents the Ninth Annual Barry D. Riccio Lecture.
Donald Spivey is the author of several books dealing with African-American history, sport, labor, music, and education. If You Were Only White: The Life of Leroy Satchel Paige (University of Missouri Press, 2012) is his most recent book.https://thekeep.eiu.edu/his_barrydriccio/1000/thumbnail.jp
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Tackling chronic pain and inflammation through the purinergic system
Full text linkThe purinergic system is composed of purine and pyrimidine transmitters, of the enzymes that modulate the interconversion of nucleotides and nucleosides, of the membrane transporters that control their extracellular concentrations, and of the many receptor subtypes that are responsible for their cellular responses. The components of this system are ubiquitously localized in all tissues and organs, and their involvement in several physiological conditions has been clearly demonstrated. Moreover, extracellular purine and pyrimidine concentrations raise several folds under pathological conditions like tissue damage, ischemia, and inflammation, which suggest that this signaling system might contribute both to disease outcome and, possibly, to its tentative resolution. The complexity of this system has greatly impaired the clear identification of the mediators and receptors that are actually involved in a given pathology, also due to the often opposite roles played by the various receptor subtypes. Nevertheless, this knowledge is fundamental for the possible exploitation of these molecular entities as targets for the development of new pharmacological approaches. In this review, we aim at highlighting what is currently known on the role of the purinergic system in various pain conditions and during inflammatory processes. Although some confusion may arise from conflicting results, literature data clearly show that targeting specific purinergic receptors may represent an innovative approach to various pain and inflammatory conditions, and that new purine-based drugs are now very close to reach the market with these indications
ISIS: Iris segmentation for identification systems
No full textAdvances in processing procedures make the iris a realistic candidate to the role of biometry of the future. Precise detection and segmentation for such biometry are a crucial ongoing research area. We propose an iris segmentation technique and show that it is more reliable than existent ones. © 2010 IEEE
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