نتایج جستجو برای: photon correlation spectroscopy

تعداد نتایج: 607510  

1996
Narayanan Shivakumar Suresh Venkatasubramanian

We consider the application of high volume information dissemination in broadcast based mobile environments. Since current mobile units accessing broadcast information have limited battery capacity, the problem of quick and energy-eecient access to data becomes particularly relevant as the number and sizes of information units increases. We propose several randomized and Huuman-encoding based i...

Journal: :Applied optics 2013
Willem L Vos Teus W Tukker Allard P Mosk Ad Lagendijk Wilbert L IJzerman

We study the diffuse transport of light through polymer slabs containing TiO(2) scattering particles. The slabs are diffuser plates typical of a commercial white light-emitting diode (LED) module (Fortimo). We have measured the diffuse transmission and reflection properties over a broad wavelength range (470-840 nm) from which we derive the transport mean free path using the theory of light dif...

Journal: :European journal of public health 2008
Mai Stafford David Gimeno Michael G Marmot

BACKGROUND Prospective data from over 10 years of follow-up were used to examine neighbourhood deprivation, social fragmentation and trajectories of health. METHODS From the third phase (1991-93) of the Whitehall II study of British civil servants, SF-36 health functioning was measured on up to five occasions for 7834 participants living in 2046 census wards. Multilevel linear regression mode...

2001
F. Comte

We provide in this paper asymptotic theory for the multivariate GARCH(p, q) process. Strong consistency of the quasi-maximum likelihood estimator (MLE) is established by appealing to conditions given in Jeantheau [19] in conjunction with a result given by Boussama [9] concerning the existence of a stationary and ergodic solution to the multivariate GARCH(p, q) process. We prove asymptotic norma...

Journal: :Physical review. D, Particles and fields 1996
Jin Chun E Joshipura Smirnov

The existence of sterile neutrino is hinted by simultaneous explanation of diverse neutrino anomalies. We suggest that the quasi Goldstone fermions (QGF) arising in supersymmetric theory as a result of spontaneous breaking of global symmetry like the Peccei-Quinn symmetry or the lepton number symmetry can play a role of the sterile neutrino. The smallness of mass of QGF (mS ∼ 10 − 10 eV) can be...

Journal: :Journal of biomedical optics 2010
Kwan Jeong John J Turek David D Nolte

Dynamic speckle from 3-D coherence-gated optical sections provides a sensitive label-free measure of cellular activity up to 1 mm deep in living tissue. However, specificity to cellular functionality has not previously been demonstrated. In this work, we perform fluctuation spectroscopy on dynamic light scattering captured using coherence-domain digital holography to obtain the spectral respons...

2005
Kevin Wortman

We exhibit a family of infinite, finitely-presented, nilpotent-byabelian groups. Each member of this family is a solvable S-arithmetic group that is related to Baumslag-Solitar groups, and everyone of these groups has a quasi-isometry group that is virtually a product of a solvable real Lie group and a solvable p-adic Lie group. In addition, we propose a candidate for a polycyclic group whose q...

2006
Lai-Jiu Lin Chih-Sheng Chuang Qamrul Hasan Ansari Q. H. Ansari

In this paper, we consider a more general form of generalized abstract economy with a fuzzy constraint correspondence studied in [15, 17]. We establish some existence results for an equilibrium of our generalized abstract economy. We also consider a system of quasi-minimax inequalities and note that it is a unified model of several problems. As applications of our equilibrium existence results,...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2008
K Green A R Champneys M I Friswell A M Muñoz

This paper concerns an analytical and experimental investigation into the dynamics of an automatic dynamic balancer (ADB) designed to quench vibration in eccentric rotors. This fundamentally nonlinear device incorporates several balancing masses that are free to rotate in a circumferentially mounted ball race. An earlier study into the steady state and transient response of the device with two ...

Journal: :Nature communications 2014
Roberta Angelini Emanuela Zaccarelli Flavio Augusto de Melo Marques Michael Sztucki Andrei Fluerasu Giancarlo Ruocco Barbara Ruzicka

Colloidal suspensions are characterized by a variety of microscopic interactions, which generate unconventional phase diagrams encompassing fluid, gel and glassy states and offer the possibility to study new phase and/or state transitions. Among these, glass-glass transitions are rare to be found, especially at ambient conditions. Here, through a combination of dilution experiments, X-ray photo...

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