نتایج جستجو برای: boyd
تعداد نتایج: 1974 فیلتر نتایج به سال:
We theoretically analyze the influence of the Gouy phase shift on the nonlinear interaction between waves of different frequencies. We focus on chi((2))interaction of optical fields, e.g. through birefringent crystals, and show that focussing, stronger than suggested by the Boyd-Kleinman factor, can further improve nonlinear processes. An increased value of 3.32 for the optimal focussing parame...
Mark Lawler, PhD; Anna Gavin, MD; Manuel Salto-Tellez, MD; Richard D. Kennedy, MD, PhD; Sandra Van Schaeybroeck, MD, PhD; Richard H. Wilson, MD; Denis Paul Harkin, PhD; Margaret Grayson; Ruth E. Boyd; Peter W. Hamilton, PhD; Darragh G. McArt, PhD; Jacqueline James, PhD; Tracy Robson, PhD; Robert D. Ladner, PhD; Kevin M. Prise, PhD; Joe M. O’Sullivan, MD; Timothy Harrison, PhD; Liam Murray, MD; ...
The problem of maximizing the determinant of a matrix subject to linear matrix inequalities arises in many elds, including computational geometry, statistics, system identi cation, experiment design, and information and communication theory. It can also be considered as a generalization of the semide nite programming problem. We give an overview of the applications of the determinant maximizati...
Boyd studies the responses to a series of questions from six teacher-librarians who are generally regarded as influential leaders within field. These will be analyzed with view testing Hartzell's scaffolding for building influence teacher-librarian.
H Ozcelik, J A Knight, G Glendon, H Yazici, N Carson, P J Ainsworth, S A M Taylor, H Feilotter, R F Carter, N F Boyd, I L Andrulis, for the Ontario Cancer Genetics Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
S Masciari, N Larsson, J Senz, N Boyd, P Kaurah, M J Kandel, L N Harris, H C Pinheiro, A Troussard, P Miron, N Tung, C Oliveira, L Collins, S Schnitt, J E Garber, D Huntsman . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
We present our experience from implementing the public-key cryptosystem of González, Boyd and Dawson. We discuss different computational methods and compare their relative efficiency experimentally. We also compare the efficiency of this cryptosystem with that of the ElGamal cipher.
Hybrid cryptographic security protocols find applications in many areas of communications, none more demanding than in the mobile security sector. In recent years a number of hybrid cryptographic security protocols have been proposed for use with 3G mobile systems. These include the ASPeCT [1] and Boyd-Park [2] security protocol. These protocols use a public key algorithm to exchange a secret s...
BACKGROUND studies have shown that milk and dairy consumption in adulthood have beneficial effects on health. METHODS we examined the impact of childhood and adult diet on physical performance at age 63-86 years. The Boyd Orr cohort (n = 405) is a 65-year prospective study of children who took part in a 1930's survey; the Caerphilly Prospective Study (CaPS; n = 1,195) provides data from mid-l...
Ghost images are obtained by correlating the output of a single-pixel (bucket) photodetector—which collects light that has been transmitted through or reflected from an object—with the output from a high spatial-resolution scanning photodetector or photodetector array whose illumination has not interacted with that object. The term “ghost image” is apt because neither detector’s output alone ca...
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