PPT-Lecture 26: Information diffusion

CS 765 Complex Networks Slides are modified from Lada Adamic David Kempe Bill Hackbor Information Diffusion Information diffusion p rocess by which a piece of information knowledge is spread and reaches individuals through interactions. What is chemical diffusion coefficient and tracer diffusion coefficient How are they inter related as D 1 ln ln Understand the meaning of th thermodynamic factor 1 ln ln and the relationship with the free energy gradient 1 ln ln 1 ln ln 1 Kirkendall ffect and Darken’s equation Today’s topics Understand D . Short history: About vacancies Vacancies are missing atoms in a crystal structure. For a perfect, pure crystal con 1. Diffusion Ordered Spectroscopy. Provides a way to separate different compounds in a mixture based on the differing translational diffusion coefficients (differences in the size and shape of a molecule). p-. Adic. models of spectral diffusion and CO-rebinding. Spectral diffusion in frozen proteins and first passage time distribution for . ultrametric. random walk. . CO-rebinding . to myoglobin. . and . in SPH and grid codes. James . Wadsley. (McMaster). Tom Quinn (Washington), Fabio . Governato. (Washington), Hugh . Couchman. (McMaster). Disks 2012, Heidelberg. Test. Agertz. et al 2007. Code comparison paper from the proto . DIFFUSION: DEFINITIONS. Diffusion is a process of . mass transport. that involves the atomic . or molecular motion. .. In the simplest form, the diffusion can be defined as the . random walk. of an ensemble of particles from regions of high concentration to regions of lower concentration. & . Osmosis. Why are diffusion and osmosis important?. Diffusion and osmosis are important because they provide . evidence. for the existence and movement of particles, that is, they provide . evidence. Dr Jean-Francois Mercure, . jm801@cam.ac.uk. Pablo Salas, . pas80@. cam.ac.uk. Lecture . 5. – . Innovation and technological change. Lecture 5-H1. : Mechanisms of technological change. Historical trends of technology diffusion. PI Dr. Kwan-Jin Jung. TA . Priti. . Albal. Dave Frank & Maggie Mahan. 12 July 2012. Outline. Phantom Analysis. Orientation. Direction . b-value . Tensor . vs. HARDI models. Human Analysis. Motion correction in DWI. Professor Ronald L. Carter. ronc@uta.edu. http://www.uta.edu/ronc/. ©. rlc. L07-07Feb2011. 2. First Assignment. e-mail to listserv@listserv.uta.edu. In the body of the message include subscribe EE5342 . http://www.glass-bottom-dishes.com/ Medium aging where fluorescent molecules are Information regarding protein mobilitymeasuring the rate of fluorescenc Why Does Fluorescence Recover? Pre-bleachPartia Mobility is a measure of the ability of an electron or a hole to get around inside a semiconductor. Scattering events lower mobility. As the temperature of a semiconductor increases, there will be more and more lattice vibrations.. In practice, one would do experiments at a series of temperatures with a tracer, determine the profile, solve Fick’s second law at each . T for D. .. Plotting . ln. D . vs. 1/T yields D. o. and E. Diffusion is a process of . mass transport. that involves the atomic . or molecular motion. .. In the simplest form, the diffusion can be defined as the . random walk. of an ensemble of particles from regions of high concentration to regions of lower concentration.