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Charlotte, United States

Bhamidi S.,UNC | Rajagopal R.,University of California at Berkeley | Roch S.,University of California at Los Angeles
Random Structures and Algorithms | Year: 2010

We use computational phylogenetic techniques to solve a central problem in inferential network monitoring. More precisely, we design a novel algorithm for multicast-based delay inference, that is, the problem of reconstructing delay characteristics of a network from end-to-end delay measurements on network paths. Our inference algorithm is based on additive metric techniques used in phylogenetics. It runs in polynomial time and requires a sample of size only poly(logn). We also show how to recover the topology of the routing tree. © 2010 Wiley Periodicals, Inc. Source

Isler M.R.,Social Medicine UNC Chapel Hill | Corbie-Smith G.,UNC
Journal of Law, Medicine and Ethics | Year: 2012

For decades, the dominant research paradigm has included trials conducted in clinical settings with little involvement from communities. The move toward community engaged research (CEnR) necessitates the inclusion of diverse perspectives to address complex problems. Using a relationship paradigm, CEnR reframes the context, considerations, practical steps, and outcomes of research. © 2012 American Society of Law, Medicine & Ethics, Inc. Source

Cherednik I.,UNC | Ma X.,University of Alberta
Selecta Mathematica, New Series | Year: 2013

This paper begins with an exposition of the classical p-adic theory of the Macdonald, Matsumoto, and Whittaker functions aimed at the affine generalizations. The major directions are as follows: (1) extending the theory of DAHA to arbitrary levels and (2) the affine Satake map and Hall functions via DAHA. The key result is the proportionality of the two different formulas for the affine symmetrizer, the Satake-type formula and that based on the polynomial representation of DAHA. The latter approach results in two important formulas for the affine symmetrizer generalizing the relations between the Kac-Moody characters and Demazure characters. © 2012 Springer Basel. Source

Collins A.,North Carolina State University | Nasir A.,UNC
Giornale Italiano di Dermatologia e Venereologia | Year: 2011

Nanotechnology is the study of purposeful design in the size range of 100 nm and smaller. Discoveries stemming from nanotechnology have led to improvements in materials and devices for industrial and consumer use. The unique properties of nanoscale matter, and the ability to engineer precisely targeted function have led to a great deal of interest in medical research in nanotechnology. Recently, the skin care industry has emerged as the leader in patents issued for nanotechnology. A range of products have been developed or are being developed for the maintenance of skin health, and the diagnosis and management of skin disease. Matter also acquires a greater potential for volatility and unfavorable reactivity on the nanoscale. The skin is the first point of contact for most nanotechnologies and thus may be an early and prime target for nanotoxicity. This review discusses some of the important benefits and risks of nanotechnology within a dermatologic context. Source

Soldano G.J.,UNC | Juarez M.F.,University of Ulm | Teo B.W.T.,National University of Singapore | Santos E.,University of Ulm | Santos E.,National University of Cordoba
Carbon | Year: 2014

Edges play a determining role in the electronic and transport properties of graphene, however, their actual morphology and configuration remain unknown. Using ab initio thermodynamics, we have systematically studied the stability and structure of armchair and zigzag edges of graphene in pure O2 and combined O2 and H2 environments. In total, 81 different nanostructures were investigated, however, only a few of them domain the phase diagram. Our calculations show that zigzag edges are less stable than armchair edges. Nonetheless, the former exhibit a much richer diversity in terms of structures. The oxygen-terminated edges occupy the largest regions in the phase stability diagram in comparison with hydrogen-oxygen-terminated edges, which correspond to carboxyl and alcohol functional groups. © 2014 Elsevier Ltd. All rights reserved. Source

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