2,224 research outputs found
The Universe in many nutshells: high resolution simulations of CMB weak gravitational lensing
No full textThis Thesis presents a new method to simulate and study weak
gravitational lensing of the Cosmic Microwave Background (CMB) and its
correlation with the Large Scale Structure (LSS). We
exploit ray-tracing techniques to follow the photons' path from
the last scattering surface, as they travel throughout a
Universe which is expanding and evolving. The main analysis revolves around
the concept of a light-cone, by compressing the information of
N-Body numerical simulations into a set of lensing planes, which
deflect the light as predicted by (weak) gravitational lensing. We
perform several different numerical tests in order to establish the accuracy
of our reconstruction and the precision of our simulations up to the
arc-minute scale, as we explore these effects by the means of the
two-points statistics.
The main goal is to model non-linear effects of weak lensing by going beyond the
first-order result of the Born approximation. We compare our simulations
with analytical and semi-analytical predictions, as we study the
signal behaviour at different scales and regimes. We confirm the
validity of first order approach up to very small scales ( with the current simulation's set-up, corresponding to few arc-minutes on the sky),
when we find some tension especially with the signal
predicted by high-order perturbation theory in the power
spectrum. Finally, we implement a methodology for creating mock
catalogues of galaxies populating N-Body simulations, in order to apply our
pipeline to model the cross-correlation between large scale
structure traces such as CMB lensing and galaxy catalogues. We show how the
simulated signal can be recovered and compared with theoretical
expectations and observations, enabling a thorough investigation
of structure formation over cosmic time and allowing for a better
understanding of cosmology and astrophysics.
The resulting, end-to-end pipeline going from simulated CMB and LSS,
through lensing and cross correlation of the distorted anisotropies and
the lenses themselves as traced by galaxies, is part of the suites of
codes and validation infrastructure
while approaching high resolution and sensitivity for CMB and LSS
observations, such as the Euclid satellite, or the POLARBEAR ground experiment
Occupational Structure of England and Wales: 1939 National Register
No full textThe dataset contains regional data on the occupational structure in England and Wales, using the 1939 National Register. Please cite as: Matteo Calabrese, Robin C. M. Philips, Robert Keenan & Bas van Leeuwen (2022). The Occupational Structure of England and Wales: The 1939 National Register, Research Data Journal for the Humanities and Social Science
Regional Occupational Structure of Interwar England and Wales
No full textThe dataset contains regional data on the occupational structure in England and Wales during the interwar years. Please cite as: Robin C. M. Philips, Matteo Calabrese, Robert Keenan & Bas van Leeuwen (2022). The regional occupational structure in interwar England and Wales, Historical Methods: A Journal of Quantitative and Interdisciplinary History
Occupational Structure of England and Wales: 1939 National Register
No full textThe dataset contains regional data on the occupational structure in England and Wales, using the 1939 National Register. Please cite as: Matteo Calabrese, Robin C. M. Philips, Robert Keenan & Bas van Leeuwen (2022). The Occupational Structure of England and Wales: The 1939 National Register, Research Data Journal for the Humanities and Social Science
Business-government networks in small states: the emergence and evolution of Luxemburg global mutual fund industry, 1945–1988
No full textThis research reconstructs the business dynamics behind the evolution of the European mutual fund industry, which led Luxembourg to become its main international gateway since the 1960s. We analyze the local mutual fund industry to understand how political and financial élites influence the economic specialization of small states. We argue that a closely-knit community of local professionals and politicians, well-versed in corporate and European legislation, leveraged the Grand-Duchy’s small state status within the nascent European Community to become a financial hub specializing in mutual funds within an emerging network of international financial centers. This position was achieved through bifurcation of sovereignty strategy based on two main premises. First, on the systematic acceptance of conflicts of interest within local financial and political leadership, comprising overlapping roles, revolving-doors, and familial ties in business relationships. Second, on regulatory engineering practices such as dynamic interpretation of laws and strategic planning of directives assimilation to advance Luxembourg’s interests as opposed to its EU counterparts. The analysis uses archival material from nine archival collections and oral history interviews
Author Correction: Gluten consumption and inflammation affect the development of celiac disease in at-risk children
No full textThe original version of this Article contained an error in the spelling of the authors Renata Auricchio, Ilaria Calabrese, Martina Galatola, Donatella Cielo, Fortunata Carbone, Marianna Mancuso, Giuseppe Matarese, Riccardo Troncone, Salvatore Auricchio & Luigi Greco which were incorrectly given as Auricchio Renata, Calabrese Ilaria, Galatola Martina, Cielo Donatella, Carbone Fortunata, Mancuso Marianna, Matarese Giuseppe, Troncone Riccardo, Auricchio Salvatore & Greco Luigi. The original article has been corrected
Location Sensor Fusion Framework and Simulator for PEACH
No full textThis document is the final report on the work done during 2003 on a framework for sensor data fusion, part of the tasks of the Workpackage 1 of the PEACH projec
Caratterizzazione funzionale dell'olio di semi di zucca commerciale
No full textQuesto tipo
di olio viene comunemente prodotto
in Slovenia, Ungheria e Austria, ed è
molto apprezzato per le sue proprietà
salutistiche e terapeutiche. Tali
proprietà sono correlate all’elevato
contenuto di carotenoidi (luteina
e zeoxantina) e di vitamina E (alfa
tocoferolo). L’olio di semi di zucca è
considerato un alimento funzionale
e un agente di prevenzione contro
varie patologie specialmente quelle
coinvolgenti la prostata.
In questo studio si è valutato il
contenuto di vitamine liposolubili
in diversi campioni di olio di
semi di zucca commerciati al
dettaglio in Italia e in Slovenia.
Si è notato che, mentre in Austria
e Slovenia quest’olio viene
usato anche come condimento,
in Italia viene prevalentemente
considerato alimento nutraceutico
e viene venduto solo nei negozi di
erboristeria e macrobiotica
ottimizzazione della produzione di zuccheri riducenti da biomasse ligno-cellulosiche
No full textQuesto lavoro tratta del processo di idrolisi per ottenere il cosiddetto “bioetanolo di seconda generazione”. La materia prima utilizzata per questo prodotto consiste in vari tipi di biomasse verdi, per sostituire la coltivazione di cereali, con evidenti vantaggi per l’ambiente e per l’economia delle produzioni agricole. Per poter raggiungere questo scopo è però necessario migliorare i procedimenti di idrolisi della cellulosa. A questo fine abbiamo sviluppato un procedimento di tipo chimico e testato le rese utilizzando il metodo colorimetrico che impiega come tracciante per gli zuccheri riducenti l’acido bicinconinico
Capillary thinning analysis
No full textThe data analysis package is composed of three distinct scripts designed to be run in Matlab with png image files. ContactAngle.m measures the contact angle of a liquid bridge and the spreading distance on the substrate for a series of images during liquid bridge thinning. Startpoint_Symmetry finds the minimum radius for a series of liquid bridge thinning images, identifies the start and end point of thinning, and gives information about the overall symmetry of the trials. EC_binning identifies the fitting region, fits and reports relaxation time for elastocapillary thinning fluids. For all three scripts, an example dataset is provided to demonstrate script functionality.This collection of scripts is a package for analyzing extensional rheology data of liquid bridges. While this was created with Dripping-onto-Substrate datasets, this data analysis package may be useful for other liquid bridge thinning applications such as CaBER. Any pre-processing of images, such as binarizing, converting to png or cropping, can be completed with ImageJ.This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under Grant No. CON-75851, project 00074041. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.Lauser, Kathleen T; Calabrese, Michelle A. (2022). Capillary thinning analysis. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/gkz4-8z17
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