1. UNDERSTANDING AGGLOMERATE DISPERSION: EXPERIMENTS AND SIMULATIONS - Fanelli, Maddalena
The behavior of clusters of particles ranging from the nanometer scale to the micrometer scale impacts a number of important processes. Dispersion of particle clusters is seen in applications involving pharmaceutical tablets, detergent granules, agglomerates of biological cells, and clusters of pigments or fillers for advanced materials. As these clusters are subjected to shearing forces associated with the motion of their host fluid, they can be broken down into smaller fragments. Often, this is the desirable outcome, but in other cases dispersion may be undesirable. Previous research has analyzed and modeled dispersion in simplified and idealized situations: steady, simple flows...

2. CONTROLLING SILICA CLUSTER DISPERSION THROUGH THERMORESPONSIVE BINDERS - Bava, Luciana
The hydrodynamic dispersibility of fine particle agglomerates into polymeric media is affected by interparticle and particle-medium interaction forces. Binders are used to modify these interactions and ultimately, to enhance material properties and control processability. While traditional binders change the particle-particle and particle-matrix interactions to a degree that depends primarily on the chemical nature of the additive and its concentration within the agglomerate, responsive binders present an innovative alternative to control and improve the dispersion phenomenon: agglomerates incorporating responsive polymers allow the adjustment of particle-particle and particle-fluid interactions by manipulating an external processing parameter. In this work, we have used thermoresponsive...

3. Descriptive Statistics for Nonparametric Models. III. Dispersion - Bickel, P. J.; Lehmann, E. L.
Measures of dispersion are defined as functionals satisfying certain equivariance and order conditions. In the main part of the paper attention is restricted to symmetric distributions. Different measures are compared in terms of asymptotic relative efficiency, i.e., the inverse ratio of their standardized variances. The efficiency of a trimmed to the untrimmed standard deviation turns out not to have a positive lower bound even over the family of Tukey models. Positive lower bounds for the efficiency (over the family of all symmetric distributions for which the measures are defined) exist if the trimmed standard deviations are replaced by $p$th power...

4. Dispersion and refractive index measurement for Ge, B-Ge doped . . . - W.N. MacPherson; A Fern; Ez Fern; B Brichard; F Berghmans; J C Knight; P Stj Russell; L Farr
We have investigated the effects of ionizing radiation-induced changes on dispersion and refractive index in photonic crystal fibre, boron co-doped photosensitive fibre and standard SMF-28 fibre up to a level of 7 MGy of Co # -radiation. We have been unable to observe any changes within an experimental error of #1% for the dispersion value and 10 -3 for the refractive index.

5. Radiation reduction of optical solitons resulting from higher order dispersion terms in the nonlinear Schrödinger equation - Beech, Robert; Osman, Frederick
This paper will present the nonlinearity and dispersion effects involved in propagation of optical solitons, which can be understood by using a numerical routine to solve the nonlinear Schrödinger equation (NLSE). Here, Mathematica v5© (Wolfram, 2003) is used to explore in depth several features of optical solitons formation and propagation. These numerical routines were implemented through the use of Mathematica v5© and the results give a very clear idea of this interesting and important practical phenomenon. It is hoped that this work will open up an important new approach to the cause, effect, and correction of interference from secondary radiation...

6. Radiation reduction of optical solitons resulting from higher order dispersion terms in the nonlinear Schrödinger equation - Beech, Robert; Osman, Frederick
This paper will present the nonlinearity and dispersion effects involved in propagation of optical solitons, which can be understood by using a numerical routine to solve the nonlinear Schrödinger equation (NLSE). Here, Mathematica v5© (Wolfram, 2003) is used to explore in depth several features of optical solitons formation and propagation. These numerical routines were implemented through the use of Mathematica v5© and the results give a very clear idea of this interesting and important practical phenomenon. It is hoped that this work will open up an important new approach to the cause, effect, and correction of interference from secondary radiation...

7. TRANSMER : A rapid and precise hydrodynamic model for a medium and long-term simulation of the dispersion of radionuclides in the English Channel and the North sea - BAILLY DU BOIS, Pascal; DUMAS, Franck
TRANSMER hydrodynamic model simulates dispersion of dissolved substances in seawater at the scale of the English Channel and the south of the North Sea with a mesh size of one kilometre and a time step of 30 minutes. It has been qualitatively and quantitatively validated by 1400 measurement of 125Sb in seawater. This model evaluates the medium- and long-term consequences of releases of soluble pollutants in the marine ecosystem under normal or accidental conditions, at a very low computation cost (it takes less than one hour to simulate one year).

8. Stochastic Dominance, Risk, Dispersion and Equilibrium Asset Pricing - Stochasticdominance Risk Dispersion,R. A. Dana
:FollowingDybvig(1988)andJouini-Kallal(2000),we deflnefora givenprice,ameasureovercontingentclaims,basedonsecondorderstochastic dominance.Thismeasureiscalledthe"utility price".Itincreaseswiththe discountedexpectedvalueoftheclaimanddecreasesasthecontingentclaim becomesmore disperseinBickel-Lehmannsense.Itsoppositeisa coherent measureofrisk.E--cientclaimsareclaimswhich priceequaltheutility price. To endogenizethepricesystem,we deflnesecondorderstochasticdominance equilibriaand show thattheyarecharacterizedby a pricingdensity instrict reverseordertoaggregateendowment and comonotoneallocations.When pricesaredifierent ineach stateoftheworld,an allocationand a priceisan equilibriumifi aggregateendowment ise--cient atthatpriceand theutility priceofaggregateendowment isthesum oftheutility pricesofindividual equilibriumconsumptions. W ehavebene fltedfromverystimulatingconversationswithE.Jouiniand I.Meilijsonand areparticularlyindebtedtoJ.W ernerformany fruitfulremarksandsuggestionsandforhishelp...

9. Rendering Light Dispersion With A Composite Spectral Model - Yinlong Sun; F. David Fracchia; Mark S. Drew
Light dispersion is an optical phenomenon wherein lights are decomposed into monochromatic components and become colored such as in crystal stones and diamonds. This paper proposes to render light dispersion with a ray tracer based on a composite spectral model. This model decomposes any spectrum into a smooth component and spikes, and offers a convenient vehicle for describing monochromatic lights occurring in light dispersion. Our ray tracer based on the composite model is very easy to implement and the synthesized images for light dispersion match closely their corresponding photographs.

10. Dispersión asimétrica de semillas de Embothrium coccineum (Proteaceae) en el bosque templado de Chiloé, Chile - Rovere,Adriana E; Premoli,Andrea C
La dispersión de semillas es un importante factor determinante de la estructura espacial de las poblaciones de plantas y su estudio permite inferir los patrones de avance de las especies a través del paisaje. Esto es particularmente relevante en el caso de especies pioneras como Embothrium coccineum (Proteaceae) que crece en ambientes perturbados de los bosques templados del sur de Sudamérica. En este trabajo evaluamos los patrones de dispersión anemócora de semillas de E. coccineum en un sitio ubicado al Norte de la Isla de Chiloé, Chile. Se colocaron trampas alrededor de tres árboles aislados y en dirección a los...

11. Dispersión asimétrica de semillas de Embothrium coccineum (Proteaceae) en el bosque templado de Chiloé, Chile - Rovere,Adriana E; Premoli,Andrea C
La dispersión de semillas es un importante factor determinante de la estructura espacial de las poblaciones de plantas y su estudio permite inferir los patrones de avance de las especies a través del paisaje. Esto es particularmente relevante en el caso de especies pioneras como Embothrium coccineum (Proteaceae) que crece en ambientes perturbados de los bosques templados del sur de Sudamérica. En este trabajo evaluamos los patrones de dispersión anemócora de semillas de E. coccineum en un sitio ubicado al Norte de la Isla de Chiloé, Chile. Se colocaron trampas alrededor de tres árboles aislados y en dirección a los...

12. La comunicación en tiempos de dispersión - Hudson, Juan Pablo
Artículo sometido a evaluación externa (sistema de referato)

13. Ultra violet rotary dispersion ... - Nutting, Perley Gilman, 1873-
1 p.l., 25 p.

14. La ecología espacial como punto de encuentro entre la ecología animal y vegetal: modelos espacialmente explícitos de dispersión endozoócora - Santamaría Galdón, Luis Enrique; Rodríguez Larrinaga, Asier; Campos Arceiz, Ahimsa; Rodríguez Pérez, Javier
En este artículo, utilizamos los sistemas de dispersión de semillas como ejemplo para exponer la importancia de la ecología espacial en las interacciones planta-animal. Estos sistemas han recibido la atención prioritaria de los ecólogos vegetales, lo que ha conllevado tanto una simplificación excesiva del papel que juegan el comportamiento y fisiología de los animales dispersantes. Además, el enfoque casi exclusivo en los "kernel de dispersión" unidimensionales involucra asunciones que son generalmente violadas en los sistemas de estudio, como la isometría del kernel dispersivo o la ausencia de heterogeneidad espacial en dicho kernel. La mayoría de estas limitaciones pueden corregirse mediante la inclusión explícita del componente...

15. The anomalous dispersion of cyanin. - Magnusson, Carl Edward.
249-296 p. :

16. The Effect of Packet Dispersion on Voice Applications in IP Networks
Abstract- Delivery of real time streaming applications, such as voice and video over IP, in packet switched networks is based on dividing the stream into packets and shipping each of the packets on an individual basis to the destination through the network. The basic implicit assumption on these applications is that shipping all the packets of an application is done, most of the time, over a single path along the network. In this study we present a model in which packets of a certain session are dispersed over multiple paths, in contrast to the traditional approach. The dispersion may be...

17. Application of a non isotropic turbulence model to stable atmospheric flows and dispersion over 3D topography - Boçon,Fernando T.; Maliska,Clóvis R.
A non isotropic turbulence model is extended and applied to three dimensional stably stratified flows and dispersion calculations. The model is derived from the algebraic stress model (including wall proximity effects), but it retains the simplicity of the "eddy viscosity" concept of first order models. The "modified k-epsilon" is implemented in a three dimensional numerical code. Once the flow is resolved, the predicted velocity and turbulence fields are interpolated into a second grid and used to solve the concentration equation. To evaluate the model, various steady state numerical solutions are compared with small scale dispersion experiments which were conducted at...

18. Aggregate Price Changes and Dispersion: A Comparison of the Equity and Goods and Services Markets - Parsley, David C.; Popper, Helen A.
Many existing studies have found a correlation between inflation and price dispersion in goods markets. In this paper, we document that a similar correlation can be found in equity markets. We estimate the correlation between overall price changes and dispersion in the NYSE and in the NASDAQ. Using quarterly data from 1975 to 1999, we compare the stock market correlations with those of goods markets. We find striking correlations in both sets of markets. The most prominent explanations of the goods market correlation (such as menu costs) cannot plausibly apply to equity markets. Thus, our findings indicate that the correlation...

19. Tridimensional model of circulation and dispersion. - THOUVENIN, Benedicte; SALOMON, J
Bottom topography, coastal morphology and density variations are the three factors influencing marine current flow in Seine Bay. Numerical modeling allows the study of this tridimensional structure.

20. Die dispersion Jenaer gläser im ultravioletten strahlengebiet ... - Trommsdorff, Hermann, 1874-
39 p., 1 l.

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