6,590 research outputs found
Intellectuals, Pragmatism, and the Craft of Sociology. Matteo Bortolini in Conversation with Neil Gross
No full textIn this interview with Matteo Bortolini, Neil Gross talks about pragmatism in sociology, the sociology of intellectuals, and his work on the police. The interview also addresses some points of a sociologist’s professional life and its different stages, starting from the hypothesis that sociologists of ideas and intellectuals should be particularly exposed to continuous moments of reflexivity
Intellectuals, Pragmatism, and the Craft of Sociology: Matteo Bortolini in Conversation with Neil Gross
No full textIn this interview with Matteo Bortolini, Neil Gross talks about pragmatism in sociology, the sociology of intellectuals, and his work on the police. The interview also addresses some points of a sociologist’s professional life and its different stages, starting from the hypothesis that sociologists of ideas and intellectuals should be particularly exposed to continuous moments of reflexivity
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
Evaluation and proposal for a new PMC Pea Harvester Support System
No full textPMC Harvesters Ltd is an OEM (Original Equipment Manufacturer) for the pea and
bean market. Their primary product line is a self propelled harvester known as the
979 CT harvester. The 979 CT is of considerable proportions being 4m x 4m x 12m
in overall dimensions, six wheel drive and weighs 29,620 kg GVW (Gross Vehicle
Weight) when fully laden.
The aim of this work was to identify and outline possible solutions for the support
system (tyre or track and undercarriage), quantify the performance of each system,
produce a design and evaluation method to determine an optimal structural
specification and to produce a design recommendation for the application.
Analysis of the current 979 CT harvester wheel configuration highlighted many
constraining factors in tyre choice. The most pertinent of these was that the wheels
have a very limited operating space and following a study of the possible tyre options
it became apparent only two manufactures, Michelin and Trelleborg, could provide
tyres which met the vehicle parameters.
An experiment was conducted to evaluate the performance of the three chosen tyre
options. From the findings of these tests it was clear that the optimal tyre for the
PMC configuration was the Trelleborg Twin Radial tyre, operating at minimum road
inflation pressure (1.6 bar) as designated by Trelleborg.
When operating the harvester in its normal working environment the tyre pressure
should be set at minimum road inflation for in-field conditions with a DBD (Dry Bulk
Density) of > 1.3 g/cm3, as excess damage caused by operating above minimum field
operating pressure is superficial.
The use of low compaction equipment such as CTIS (Central Tyre Inflation System)
or tracks would not be beneficial to the PMC application. The track tested created a
hardened track pan, thus requiring more effort to rectify post harvest. A CTIS increases the consumption of diesel and offered no reduction in soil compaction
below plough depth as shown by the findings from operating the optimal tyre at
minimum field inflation pressure (1.2 bar).
The primary objective of this project was to offer solutions to reduce the effects of the
PMC harvester’s weight on its operating medium. The first natural step was to assess
the vehicles main structure in order to improve its performance to weight ratio. The
initial phase of this process was to validate the modelling and analyses techniques
used to assess the structure. This was done within a controlled test environment at
CU@S and from this work a factor of safety of 10% was designated to be applied to
all analysis in order to authenticate results and generate a “worst case” answer.
Revisions of the main chassis, main pivot and rear axle assemblies were created and
analysed. Test metrics were defined which represented operating patterns of the
harvester. The findings from these tests saw a 22.6% weight reduction, 43.1%
increase in life expectancy and 10.2% reduction in peak stress in the main chassis and
main pivot. Unlike the other two key assemblies, the rear axle was deemed fit for
purpose and would not benefit from any further design changes
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
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