5,224 research outputs found
Particles and Fields in Superfluids: Insights from the Two-dimensional Gross-Pitaevskii Equation
No full textWe study the dynamics of active particles in two-dimensional superfluids at temperature , for a variety of initial configurations, by carrying out extensive direct-numerical-simulations of the two-dimensional, Galerkin-truncated Gross-Pitaevskii equation. Our study elucidates the interplay of particles and fields, in both simple and turbulent flows. We show that particle collisions can be inelastic, if the repulsive interactions between particles is weak, and elastic otherwise. We show that assemblies of many particles and vortices yield turbulent spatiotemporal evolutions
Mutual-Friction Coefficients in Two-Dimensional Superfluids: From the Gross-Pitaevskii equation to the Hall-Vinen-Bekharevich-Khalatnikov Two-fluid Model
No full textWe start from the two-dimensional Gross-Pitaevskii equation (GPE) and develop algorithms for the ab-initio determination of the temperature (T) dependence of the mutual-friction coefficients, α and α, and the normal-fluid density Pn, which appear as parameters in the Hall-Vinen-Bekharevich-Khalatnikov (HVBK) two-fluid model for a superfluid. In the second part of our study, we elucidate the statistical properties of two-dimensional, homogeneous, isotropic superfluid turbulence in the simplified HVBK model, with values for the mutual-friction coefficients that are comparable to those we obtain from the first part of our study
The building of an external and internal facade
No full textMy thesis paper is an overview of my artistic practices, exhibitions and work while an MFA candidate at Rutgers Mason Gross School of the Arts.M.F.A.Includes bibliographical references (p. 23)by Alan LaZar
Understanding intraday credit in large-value payment systems
No full textThis article explains how large-value payment systems work, using either gross or net settlement. The author discusses risk control in a real-time gross settlement system and analyzes the pricing of credit to provide intraday liquidity. She argues for distinguishing between consumption/investment debt and payment debt. A theoretical model suggests that, under the assumption that there are no opportunities for intraday optimization of consumption and production, the risk-free rate on intraday payment credit should be zero. This is because the cost of intraday liquidity is a transaction cost of the underlying goods/assets trade and, thus, should be minimized.Payment systems ; Credit ; Debt ; Liquidity (Economics)
"Gross Rosen" by Mieczyslaw Moldawa, Polish language excerpt, several pages
No full textA photocopy of pages 51, 238, 250, and 278 of the book "Gross Rosen--A Concentration Camp in Silesia" by Mieczyslaw Moldawa in the original Polish language. Marian Wojciechowski is mentioned on these pages. The photocopy of the title page is inscribed and signed by the author
Gross Job Flows in Ukraine: Size, Ownership and Trade Effects
No full textThis paper documents and analyses gross job flows and their determinants in Ukraine using a data set of more than 2200 Ukrainian firms operating in manufacturing and non-manufacturing for the years 1998-2000. Job destruction dominates job creation in both 1999 and 2000. Another clear-cut result of our analysis is the strong positive effect of new private firms on net employment growth. We also find an inverse relationship between job reallocation and size for both manufacturing and non-manufacturing, while only in the latter sector is employment growth inversely related with size. The main focus of the paper is the effect of trade flows on employment adjustment in manufacturing. Our results show that both employment growth and job reallocation at the firm and two-digit sector level are affected by strong exposure to import competition and product market competition in export markets. These effects are more pronounced when we consider trade flows to the world at large and to the EU than when the analysis is based on trade flows to the CIS.http://deepblue.lib.umich.edu/bitstream/2027.42/39935/3/wp550.pd
Dr. R. M. Gross to Larry Smitherman, 21 September 1962
No full textGross states Alabamians are ashamed of Smitherman\u27s stand on integration, as people like him are making us lose our fight against integration.https://egrove.olemiss.edu/west_union_tel/1033/thumbnail.jp
Intraday liquidity management: a tale of games banks play
No full textOver the last few decades, most central banks, concerned about settlement risks inherent in payment netting systems, have implemented real-time gross settlement (RTGS) systems. Although RTGS systems can significantly reduce settlement risk, they require greater liquidity to smooth nonsynchronized payment flows. Thus, central banks typically provide intraday credit to member banks, either as collateralized credit or priced credit. Because intraday credit is costly for banks, how intraday liquidity is managed has become a competitive parameter in commercial banking and a policy concern of central banks. This article uses a game-theoretical framework to analyze the intraday liquidity management behavior of banks in an RTGS setting. The games played by banks depend on the intraday credit policy of the central bank and encompass two well-known paradigms in game theory: "the prisoner's dilemma" and "the stag hunt." The former strategy arises in a collateralized credit regime, where banks have an incentive to delay payments if intraday credit is expensive, an outcome that is socially inefficient. The latter strategy occurs in a priced credit regime, where postponement of payments can be socially efficient under certain circumstances. The author also discusses how several extensions of the framework affect the results, such as settlement risk, incomplete information, heterogeneity, and repeated play.Payment systems ; Banks and banking, Central ; Bank liquidity ; Game theory ; Credit
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