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Special Issue on "The BRICs Countries (Brazil, Russia, India, and China) in the Global System" : Guest Editor: Leslie Elliott Armijo ; The BRICs Countries (Brazil, Russia, India, And China) As Analytical Category: Mirage Or Insight?
As the use of signatures for identification purposes is pervasive in society and has a long history in business, dynamic signature verification (DSV) could be an answer to authenticating a document signed electronically and establishing the identity of that document in a dispute. DSV has the advantage in that traits of the signature can be collected on a digitizer. The research question of this paper is to understand how the individual variables vary across devices. In applied applications, this is important because if the signature variables change across the digitizers this will impact performance and the ability to use those variable. Understanding which traits are consistent across devices will aid dynamic signature algorithm designers to create more robust algorithms.
Elliott Brown, Karin A.,Shetty, Vivek,Atchison, Kathryn,Leathers, Richard,Black, Edward,Delrahim, Sandra Korean Academy of Oral Biology and the UCLA Dental 1998 International Journal of Oral Biology Vol.23 No.1
This study examined the relationship between perceived social support and reports of well-being and risky health behaviors among minority males treated at an urban orofacial trauma center. One hundred nineteen African American and 49 Hispanic males, who received orofacial surgery due to a fractured jaw, participated in a structured interview over a six month period. Selected scales from the MOS Short-Form(SF-20) survey were used to obtain self-reports of general health, emotional well-being and the perceived availability of general social support. Patients were also asked about alcohol and street drug use to assess risky health behavior and its relationship to social support. An overwhelming majority of the patients perceived social support to be available to them. However, significantly more Hispanic patients reported "having enough friends and social life" compared to African-American patients. For both groups, perceived availability of social support was found to be positively related to patients reports of general health and emotional well-being. Eighty percent of the patients reported alcohol use as a habit. Alcohol use did not influence perceptions of available social support. More African-American patients (46%) reported habitual street drug use than Hispanics (16%). Habitual street drug use poses a significant risk for poor social support and emotional distress. Social support did not buffer the relationship between street drug use and mental health risk. Perceptions of social support remained consistent when examined across three and six months post-surgery. The positive perceptions of available support reported by the majority of inner-city ethnic-minority males in this study suggests that the potential positive influence of social relationships on their recovery and well-being should not be underestimated. Instead, information on supportive relationships should be elicited and availed of as an adjunct to surgical care.
Elliott, Paul ,R.,Irvine, Andrew ,F.,Jung, Hyun ,Suk,Tozawa, Kaeko,Pastok, Martyna ,W.,Picone, Remigio,Badyal, Sandip ,K.,Basran, Jaswir,Rudland, Philip ,S.,Barraclough, Roger Cell Press 2012 Structure Vol.20 No.4
<P><B>Summary</B></P><P>Filament assembly of nonmuscle myosin IIA (NMIIA) is selectively regulated by the small Ca<SUP>2+</SUP>-binding protein, S100A4, which causes enhanced cell migration and metastasis in certain cancers. Our NMR structure shows that an S100A4 dimer binds to a single myosin heavy chain in an asymmetrical configuration. NMIIA in the complex forms a continuous helix that stretches across the surface of S100A4 and engages the Ca<SUP>2+</SUP>-dependent binding sites of each subunit in the dimer. Synergy between these sites leads to a very tight association (K<SUB>D</SUB> ∼1 nM) that is unique in the S100 family. Single-residue mutations that remove this synergy weaken binding and ameliorate the effects of S100A4 on NMIIA filament assembly and cell spreading in A431 human epithelial carcinoma cells. We propose a model for NMIIA filament disassembly by S100A4 in which initial binding to the unstructured NMIIA tail initiates unzipping of the coiled coil and disruption of filament packing.</P>
In this paper, we study the closedness such as seminomality and t-closedness, and Noetherian-like properties such as piecewise Noetherianness and Noetherian spectrum, of Hurwitz polynomial rings and Hurwitz series rings. To do so, we construct an isomorphism between a Hurwitz polynomial ring (resp., a Hurwitz series ring) and a factor ring of a polynomial ring (resp., a power series ring) in a countably infinite number of indeterminates.