cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Science with the TianQin Observatory: Preliminary results on Galactic double white dwarf binaries
Creators: name: Huang, Shun-Jia
name: Hu, Yi-Ming
name: Korol, Valeriya
name: Li, Peng-Cheng
name: Liang, Zheng-Cheng
name: Lu, Yang
name: Wang, Hai-Tian
name: Yu, Shenghua
name: Mei, Jianwei
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We explore the prospects of detecting of Galactic double white dwarf (DWD) binaries with the space-based gravitational wave (GW) observatory TianQin. In this work, we analyze both a sample of currently known DWDs and a realistic synthetic population of DWDs to assess the number of guaranteed detections and the full capacity of the mission. We find that TianQin can detect 12 out of $\sim100$ known DWDs; GW signals of these binaries can be modeled in detail ahead of the mission launch, and therefore they can be used as verification sources. Besides we estimate that TianQin has potential to detect as many as $10^4$ DWDs in the Milky Way. TianQin is expected to measure their orbital periods and amplitudes with accuracies of $\sim10^{-7}$ and $\sim0.2$, respectively, and to localize on the sky a large fraction (39%) of the detected population to better than 1 deg$^2$. We conclude that TianQin has the potential to significantly advance our knowledge on Galactic DWDs by increasing the sample up to 2 orders of magnitude, and will allow their multi-messenger studies in combination with electromagnetic telescopes. We also test the possibilities of different configurations of TianQin: (1) the same mission with a different orientation, (2) two perpendicular constellations combined into a network, and (3) the combination of the network with the ESA-led Laser Interferometer Space Antenna. We find that the network of detectors boosts the accuracy on the measurement of source parameters by 1-2 orders of magnitude, with the improvement on sky localization being the most significant.
description: 21 pages, 7 figures, 6 tables, 5 appendices, to be published in Phys. Rev. D
Few-body solutions under spin-exchange interaction: magnetic bound state and the Kondo screening effect
Creators: name: Peng, Cheng
name: Cui, Xiaoling
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Motivated by recent progresses on ultracold alkaline-earth atoms towards the goal of simulating Kondo physics, in this work we exactly solve the few-body problem of one and two trapped fermions in one dimension interacting with a localized impurity under tunable spin-exchange interaction. It is found that depending on the sign of the spin-exchange coupling, ferromagnetic(FM) or anti-ferromagnetic(AFM), the attractive and repulsive branches can hold different magnetic structures. For the two fermions case, we demonstrate the Kondo screening effect for the attractive branch with AFM coupling, and show that such screening is absent for the ground state with FM coupling. Moreover, we find a sequence of FM upper branches in the AFM coupling side. These FM states are orthogonal to all other attractive branches and their wave functions feature a full spin-charge separation. The effect of an additional contact interaction and the extension of our results to many particles are also discussed. This work reveals the intriguing physics uniquely associated with the spin-exchange interaction in the few-body point of view, which are promisingly to be explored in the experiment of ultracold alkaline-earth atoms.
description: 11 pages, 3 figures, published version with a new section added about the experimental relevance of our results
Convergence of Ricci flow solutions to Taub-NUT
Creators: name: Di Giovanni, Francesco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study the Ricci flow starting at an SU(2) cohomogeneity-1 metric $g_{0}$ on $\mathbb{R}^{4}$ with monotone warping coefficients and whose restriction to any hypersphere is a Berger metric. If $g_{0}$ has bounded Hopf-fiber, curvature controlled by the size of the orbits and opens faster than a paraboloid in the directions orthogonal to the Hopf-fiber, then the flow converges to the Taub-NUT metric $g_{\mathsf{TNUT}}$ in the Cheeger-Gromov sense in infinite time. We also classify the long-time behaviour when $g_{0}$ is asymptotically flat. In order to identify infinite-time singularity models we obtain a uniqueness result for $g_{\mathsf{TNUT}}$.
description: 49 pages, final version. Accepted in Commun. Partial. Differ. Equ
Multidimensional Matrix Inversions and Elliptic Hypergeometric Series on Root Systems
Creators: name: Rosengren, Hjalmar
name: Schlosser, Michael J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 33D67

description: Multidimensional matrix inversions provide a powerful tool for studying multiple hypergeometric series. In order to extend this technique to elliptic hypergeometric series, we present three new multidimensional matrix inversions. As applications, we obtain a new $A_r$ elliptic Jackson summation, as well as several quadratic, cubic and quartic summation formulas.
I cambiamenti nel rapporto fra servizio del debito ed esportazione nel 1980-1985: un confronto internazionale. (An international comparison of the causes of changes in the debt service ratio 1980-1985)
Creators: name: GIBSON, H.D.
name: THIRLWALL, A.P.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: International debt crisis, amortisation, interest, exports, debt-management
subject: F34, H63, E43

description: Le forze che hanno portato alla crisi del debito degli anni 1980 vanno molto indietro nel tempo . Come un paese vive un rapporto di crescente di servizio del debito di esportare i guadagni per cui il suo rischio aumenta di default. Indicatori mostrano che i tassi di interesse erano su una tendenza al rialzo dei prezzi delle commodity , quando erano in una tendenza al ribasso . Tuttavia , questa è una analisi semplicistica . Gli autori disgregano il rapporto in cinque componenti : una variazione di volume del debito ; una variazione del tasso di ammortamento; una variazione del tasso di interesse; una variazione del volume delle esportazioni ; una variazione del prezzo delle esportazioni . L'articolo esamina questi autonomamente alla luce dei dati disponibili . I risultati suggeriscono che la riprogrammazione politica è scoordinata e che i metodi di gestione del debito può essere migliorata The forces leading up to the debt crisis of the 1980s go back a long way. As a country experiences a rising ratio of debt service payments to export earnings so its default risk increases. World indicators show that interest rates were on a rising trend when commodity prices were on a downward trend. However, this is a simplistic analysis. The authors disaggregate the ratio into five components: a change in the volume of debt; a change in the rate of amortisation; a change in the rate of interest; a change in the volume of exports; a change in the price of exports. The article examines these independently in the light of the available data. Results suggest that rescheduling policy is uncoordinated and that debt-management methods can be improved. JEL: F34, H63, E43
description: Moneta e Credito, V. 42, N. 166 (1989)
Frühe Förderung bei Kindern aus Familien in Risikosituationen – Effekte eines Förderprogramms überlagert vom Einfluss zusätzlicher Angebote wie Kindertagesstätten? Qualitätserfassung der Interaktion Kind Erzieherin in Kitas bei der ZEPPELIN-Stichprobe
Creators: name: Broger, Bettina
name: Moosmann, Aline
name: Stierli, Andrea
Publisher: name: Zenodo
Year: 2016
Subjects: Sonderpädagogik
Kindertagesstätte
Frühförderung
Masterarbeit

description: Die Interventionsstudie ZEPPLIN 0-3 untersucht, ob Massnahmen der selektiven Prävention ab Geburt die Bildungschancen von Kindern aus Familien in Risikosituationen erhöhen. Dazu durchliefen 119 Kinder und Eltern während drei Jahren das Frühförderprogramm PAT. Es stellt sich die Frage, ob die positiven Zwischenergebnisse nur auf PAT zurückzuführen sind, oder ob sie mit zusätzlichen Treatments zusammenhängen. Es wurde eine Liste erstellt, in der die zusätzlichen Treatments der ZEPPELIN-Kinder erfasst sind. Wir konzentrierten uns im Speziellen auf die Kinder, die eine Kita besuchten. In einigen betreffenden Kindertagesstätten wurde mit Hilfe des Beobachtungsinstrumentes CLASS die Qualität der Kind-Erzieherinnen-Interaktion erfasst. Die Ergebnisse dienen dazu, zu einem späteren Zeitpunkt Rückschlüsse ziehen zu können, inwiefern PAT und Kitabesuche den Bildungserfolg der Kinder beeinflussen.
High-resolution tunneling spin transport characteristics of topologically distinct magnetic skyrmionic textures from theoretical calculations
Creators: name: Palotás, Krisztián
name: Rózsa, Levente
name: Simon, Eszter
name: Szunyogh, László
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: High-resolution tunneling electron spin transport properties (longitudinal spin current (LSC) and spin transfer torque (STT) maps) of topologically distinct real-space magnetic skyrmionic textures are reported by employing a 3D-WKB combined scalar charge and vector spin transport theory in the framework of spin-polarized scanning tunneling microscopy (SP-STM). For our theoretical investigation metastable skyrmionic spin structures with various topological charges ($Q=-3,-2,-1,0,1,2$) in the (Pt$_{0.95}$Ir$_{0.05}$)/Fe/Pd(111) ultrathin magnetic film are considered. Using an out-of-plane magnetized SP-STM tip it is found that the maps of the LSC vectors acting on the spins of the magnetic textures and all STT vector components exhibit the same topology as the skyrmionic objects. In contrast, an in-plane magnetized tip generally does not result in spin transport vector maps that are topologically equivalent to the underlying spin structure, except for the LSC vectors acting on the spins of the skyrmionic textures at a specific relation between the spin polarizations of the sample and the tip. The magnitudes of the spin transport vector quantities exhibit close relations to charge current SP-STM images irrespectively of the skyrmionic topologies. Moreover, we find that the STT efficiency (torque/current ratio) acting on the spins of the skyrmions can reach large values up to $\sim$25 meV/$μ$A ($\sim$0.97 $h/e$) above the rim of the magnetic objects, but it considerably varies between large and small values depending on the lateral position of the SP-STM tip above the topological spin textures. A simple expression for the STT efficiency is introduced to explain its variation. Our calculated spin transport vectors can be used for the investigation of spin-polarized tunneling-current-induced spin dynamics of topologically distinct surface magnetic skyrmionic textures.
description: 19 pages, 6 figures; accepted in J. Magn. Magn. Mater
L'impatto della politica fiscale e dell'inflazione sul risparmio nazionale: un commento. (The impact of fiscal policy and inflation on national saving. A comment)
Creators: name: ROSSI, N.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Italy, fiscal policy, inflation, savings, Ricardian Equivalence Proposition
subject: E31, E62

description: La crescente preoccupazione per la sostenibilità delle politiche di bilancio attuali in Italia ha portato ad una serie di tentativi negli ultimi anni per valutare l' equivalenza ricardiana Proposizione . Quello che colpisce è che diversi autori hanno prodotto , se non contraddittoria , prove in gran parte basato sulle stesse informazioni . Il presente lavoro mette in evidenza un particolare lavoro di Modigliani , Jappelli e Pagano ( 1985) , per dimostrare che quello che sembra essere la prova contraddittoria è in gran parte il risultato di un trattamento errato della dinamica . Conclusioni dell'autore forniscono un avvertimento contro il pericolo di test micro- ipotesi e di conseguenza derivante prescrizioni di politica sul terreno di una non corretta applicazione degli strumenti econometrici a dati aggregati The increasing concern about the sustainability of current fiscal policies in Italy has led to a number of attempts in recent years to assess the Ricardian Equivalence Proposition. What is striking is that different authors have produced mixed, if not contradictory, evidence based largely on the same information. The present work highlights a particular work by Modigliani, Jappelli and Pagan (1985), to show that what appears to be contradictory evidence is largely the result of an incorrect treatment of dynamics. The author’s conclusions provide a warning against the danger of testing micro-hypotheses and consequently deriving policy prescriptions on the ground of an incorrect application of econometric tools to aggregate data. JEL: E31, E62
description: Moneta e Credito, V. 42, N. 166 (1989)
L'impatto della politica fiscale e dell'inflazione sul risparmio nazionale: una replica. (The impact of fiscal policy and inflation on national saving. A reply)
Creators: name: MODIGLIANI, F.
name: JAPPELLI, T.
name: PAGANO, M.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Italy, fiscal policy, inflation, savings, Ricardian Equivalence Proposition
subject: E31, E62

description: L' articolo serve come risposta alla critica di Nicola Rossi di precedenti lavori degli autori in materia di politica fiscale e di risparmio nazionale in Italia . Gli autori ribadiscono la loro scoperta precedente che i deficit hanno infatti ridotto i risparmi nazionali e in particolare su due punti . In primo luogo , contrariamente a quanto egli afferma , la prova di Rossi è incompatibile con l' equivalenza ricardiana Proposizione . In secondo luogo , questo fallimento diventa ancora più evidente se si basa sulla formulazione dati aggiornati e migliorati sottostante il contributo più recente di Modigliani e Jappelli ( 1987) The article serves as a response to Nicola Rossi’s critique of the authors’ previous work on fiscal policy and national savings in Italy. The authors reaffirm their previous finding that deficits have indeed reduced national savings and in particular make two points. First, contrary to his assertions, Rossi’s evidence is inconsistent with the Ricardian Equivalence Proposition. Second, this failure becomes even more apparent if one relies on the updated formulation and improved data underlying the more recent contribution of Modigliani and Jappelli (1987). JEL: E31, E62
description: Moneta e Credito, V. 42, N. 166 (1989)
title: Development Of A Cold Atoms Platform For A DQC1 Implementation
Creators: name: Krzyzanowska, Katarzyna
Publisher: name: The Open University
Year: 2018

description: In this work we report on the development progress of a cold atoms platform to demonstrate a model of quantum computation known as deterministic Quantum computing with One Clean Qubit (DQC1). This is a novel class of algorithms where interactions between qubits enable nonclassical correlations other than entanglement, namely discord. We aim to demonstrate the DQC1 protocol using a scheme in which the information processing is realized on cold neutral rubidium atoms through the cNOT gate based on a Rydberg blockade. The implementation of this protocol imposes very stringent requirements on the cloud of atoms: to realise the cNOT gate with high fidelity it is required that a full Rydberg blockade is operating throughout the extent of the ensemble. This means that a cloud of atoms needs to have a radius below approximately 5 μm (for Rydberg states of atoms n = 43). A dipole trap system was designed and implemented during the course of this PhD with the aim of satisfying these experimental constraints. In our setup, a vapour of 87Rb is first trapped in a Magneto-Optical Trap (MOT) and cooled to sub-Doppler temperatures. The atoms are then subsequently trapped in the dipole trap. Our dipole trapping setup is based on a high numerical aperture lens (NA=0.53) to achieve a sub-micron trapping potential and simultaneously observe trapped atoms with a micrometre resolution. According to the design and the optical tests, the system is capable of creating the trapping potential with about 1 μm waist and 4 μm Rayleigh length. The aim of this work was to examine and optimise experimental conditions under which the dipole trap should be operated, so that the sufficiently small trap for the DQC1 algorithm can be obtained in the future. For characterisation, a trap of a bigger volume (about 6 μm waist and 28 μm length) was setup instead of using the full capacity of the system. This enhanced the atom loading procedure and provided more convenient conditions for experiments. The temperature of atoms was typically around 250 μK, and the trap lifetime (2.5 s) was limited by the background collisions, which indicates that the vacuum was maintained on the expected level. The key findings of the thesis are that the properties of the atoms reservoir (MOT temperature and density), and the loading processes (intensity of MOT beams), need to be optimised to be able to load a micrometre size trap. These findings are instrumental for the future implementation of the DQC1 protocol and also have implications for other protocols founded on the use of a Rydberg blockade.
PROTOCOLO DE REVISÃO INTEGRATIVA: ADVANCED NURSING PRACTICES DIRECTED AT NAVIGATION OF PATIENTS WITH HEAD AND NECK NEOPLASMS
Creators: name: Lima, Fernando Conceição de
name: Sagíca, Taís dos Passos
name: Correa Júnior, Antonio Jorge S.
name: Mendes, Clarissa Porfírio
name: Sonobe, Helena Megumi
name: Santana, Mary Elizabeth de
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 420505
subject: Nursing workforce
classificationCode: 420599
subject: Nursing not elsewhere classified

description: Objetivo: conhecer a síntese das evidências sobre as práticas avançadas de enfermagem direcionadas a navegação de pacientes com neoplasias de cabeça e pescoço. Metodologia: revisão em seis etapas. A busca da literatura, foi realiza de junho a julho de 2023, por meio do Portal de Periódicos da Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brasil. As bases de dados consultadas foram: Base de dados de Enfermagem (BDENF), Literatura Latino-americana e do Caribe em Ciências da Saúde (LILACS), Medical Literature Analysis and Retrieval System Online (MEDLINE) via PubMed Central® (PMC), Scopus Info Site (Scopus), Web of Science (WOS), EMBASE e, por fim, o repositório de trabalhos científicos Scientific Electronic Library Online (SciELO). Utilizou-se os descritores em ciências da saúde (DeCS) em português e espanhol: “neoplasias de cabeça e pescoço”, “neoplasias de cabeza y cuello”, “câncer de cabeça e pescoço”, “navegación de pacientes” e “enfermería” juntamente aos Medical Subject Headings (MeSH) em inglês: “head AND neck neoplasms”, “patient navigation” e “nursing”. Para modelagem das estratégias de busca, utilizaram-se as combinações por meio dos operadores booleanos AND e OR.
Additional file 1 of Predictive value of extracellular volume fraction determined using enhanced computed tomography for pathological grading of clear cell renal cell carcinoma: a preliminary study
Creators: name: Liu, Jian
name: Zhang, Xunlan
name: Lv, Rui
name: Zhang, Xiaoyong
name: Wang, Rongpin
name: Zeng, Xianchun
Publisher: name: figshare
Year: 2025
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Supplementary Material 1
title: Untersuchungen zum Schubmittelpunktsverlauf von Hochhauskernen mit Öffnungsreihen
Creators: name: Zierhofer, Rupert
Publisher: name: TU Wien
Year: 2014
Subjects: subject: Hochhauskerne
subject: Schubmittelpunkt

description: Der Schubmittelpunkt eines rechteckigen, dünnwandigen und geschlossenen Querschnitts mit konstanter Wanddicke fällt mit dem Schwerpunkt zusammen. Wird dieser Querschnitt an einer Seite geöffnet, ändert sich die Lage des Schubmittelpunkts so, dass er sich außerhalb des Querschnitts befindet. In Hochhäusern werden aussteifende Kerne häufig zur Unterbringung von Liftschächten verwendet. Aufgrund der geschoßweisen Anordnung von Liftöffnungen treten geschlossene und offene Querschnittsabschnitte in abwechselnder Reihenfolge auf. Zur Untersuchung, in welcher Form und nach welchen Gesetzmäßigkeiten sich der Schubmittelpunkt über die Höhe des Hochhauskerns mit einer Öffnungsreihe bewegt, wurden sieben sich hinsichtlich ihrer Öffnungsanzahl, -anordnung und -größe unterscheidende Kerne im Maßstab 1:50 hergestellt. Die Auffindung des Schubmittelpunktverlaufs eines Modellkörpers erfolgte einerseits über Messungen in physikalischen Versuchen und andererseits durch numerische Simulationen. Sowohl der entwickelte Versuchsaufbau als auch die Vorgehensweise der numerischen Simulationen werden erläutert. Ein Zusammenhang zwischen der Periodizität der Schubmittelpunktsverläufe und der Öffnungsanordnungen bzw. -größen konnte beobachtet werden. Zusätzlich war eine Abnahme der Exzentrizitäten der Schubmittelpunkte mit abnehmender Distanz zur Einspannung der Probekörper zu erkennen. Im Vergleich zu den physikalischen Versuchen war diese Abnahme in den numerischen Simulationen stärker ausgeprägt.
description: The shear center of a rectangular, thin-walled, and closed cross section with a constant thickness coincides with its center of gravity. If the profile is not closed but opened at one side of the rectangle, the shear center moves from the inside to the outside of the cross section. In high-rise buildings stiffening cores are often used as elevator shafts which require wall openings in each floor. Thus alternating sections of closed and opened profiles occur along the height of the core. In this work, seven 1:50 scaled models of high-rise cores have been investigated, where numbers, positions, and sizes of the perforations have been varied. A set-up for the measurement of the movement of the shear center along the height has been developed. Physical measurements and numerical simulations have been carried out. A general coincidence is observed regarding the geometric patterns of the perforations and the periodicity of the shear center movements. In addition, the eccentricity of the shear center seems to decrease with decreasing distance to the rigid clamping. This relationship is more pronounced in the simulations as compared to the experimental results.
Scattering in the Ising Model Using Quantum Lanczos Algorithm
Creators: name: Yeter-Aydeniz, Kübra
name: Siopsis, George
name: Pooser, Raphael C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Time evolution and scattering simulation in phenomenological models are of great interest for testing and validating the potential for near-term quantum computers to simulate quantum field theories. Here, we simulate one-particle propagation and two-particle scattering in the one-dimensional transverse Ising model for 3 and 4 spatial sites with periodic boundary conditions on a quantum computer. We use the quantum Lanczos algorithm to obtain all energy levels and corresponding eigenstates of the system. We simplify the quantum computation by taking advantage of the symmetries of the system. These results enable us to compute one- and two-particle transition amplitudes, particle numbers for spatial sites, and the transverse magnetization as functions of time. The quantum circuits were executed on IBM 5-qubit superconducting hardware. The experimental results with readout error mitigation are in very good agreement with the values obtained using exact diagonalization.
Modelado de relés de distancia para ATP-EMTP - Parte 2.pdf
Creators: name: Guaman Medina, Ruben
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 400805
subject: Electrical energy transmission, networks and systems

description: En esta segunda parte se presenta los métodos de procesamiento de señales digitales utilizados en el modelo del relé de distancia. Se hace una introducción a los conceptos generales del procesamiento de señales digitales o DSP (del inglés Digital Signal Processing) con el fin de tener un contexto claro en el cual se enmarca el modelo.
Riflessioni radicali di un economista applicato. (The radical reflections of an applied economist)
Creators: name: PHELPS BROWN, H.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Henry Phelps Brown, biography, recollections
subject: B31, A10

description: L'articolo è un contributo ad una serie di ricordi e riflessioni sulle esperienze professionali di illustri economisti cominciati con Banca Nazionale del Lavoro Quarterly Review nel 1979. In esso Henry Phelps Brown guarda indietro a riflettere sulla professione di economia .. The paper is a contribution to a series of recollections and reflections on the professional experiences of distinguished economists which the Banca Nazionale del Lavoro Quarterly Review started in 1979. In it Henry Phelps Brown looks back to reflect on the profession of economics. JEL: B31, A10
description: Moneta e Credito, V. 33, N. 129 (1980)
Dynamic Zoom Simulations: a fast, adaptive algorithm for simulating lightcones
Creators: name: Garaldi, Enrico
name: Nori, Matteo
name: Baldi, Marco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The advent of a new generation of large-scale galaxy surveys is pushing cosmological numerical simulations in an uncharted territory. The simultaneous requirements of high resolution and very large volume pose serious technical challenges, due to their computational and data storage demand. In this paper, we present a novel approach dubbed Dynamic Zoom Simulations -- or DZS -- developed to tackle these issues. Our method is tailored to the production of lightcone outputs from N-body numerical simulations, which allow for a more efficient storage and post-processing compared to standard comoving snapshots, and more directly mimic the format of survey data. In DZS, the resolution of the simulation is dynamically decreased outside the lightcone surface, reducing the computational work load, while simultaneously preserving the accuracy inside the lightcone and the large-scale gravitational field. We show that our approach can achieve virtually identical results to traditional simulations at half of the computational cost for our largest box. We also forecast this speedup to increase up to a factor of 5 for larger and/or higher-resolution simulations. We assess the accuracy of the numerical integration by comparing pairs of identical simulations run with and without DZS. Deviations in the lightcone halo mass function, in the sky-projected lightcone, and in the 3D matter lightcone always remain below 0.1%. In summary, our results indicate that the DZS technique may provide a highly-valuable tool to address the technical challenges that will characterise the next generation of large-scale cosmological simulations.
description: 17 pages, 13 figures, version accepted for publication in MNRAS
Planning dynamic vehicle motion using move trees
Creators: name: Adam, Andrew
Publisher: name: University of British Columbia
Year: 2011

description: Generating skilled and well-planned behaviours for autonomous agents is a challenging problem common to both computer animation and robotics. This thesis presents a system that uses motion graphs for online motion planning, resulting in skilled driving behaviours for a dynamic model of a car in a constrained environment. The result reproduces skilled driving behaviors. It is a particular challenge to get the cars to produce skidding-into-turn behaviors when approaching sharp corners, which can achieve the fastest speeds around a track. The techniques explored in this thesis are potentially generalizable to other dynamic vehicle behaviours, in computer games or simulations. We demonstrate that a well-formed move tree or motion graph, created from the output of a physics-based simulation can be used to produce realistic steering behaviours on a variety of tracks. We show that a finite-horizon A * search algorithm is well suited to this task. We have produced a number of smooth animations that demonstrate considerable anticipation and agility, be it through acceleration/deceleration around tricky obstacles, or a hard skidding turn into a corner after approaching at high speed. Finally, we offer a number of ways that we could speed up the algorithms for future work in this area.
On cosmic acceleration in four dimensional Einstein-Gauss-Bonnet gravity
Creators: name: Sadjadi, H. Mohseni
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the possibility that in the model introduced in \cite{GBN}, the Gauss-Bonnet term alone gives rise to the cosmic acceleration and super-acceleration in four-dimensional FLRW space-time at the late time. We also discuss transitions from deceleration to acceleration and acceleration to super-acceleration. We show that the Gauss-Bonnet invariant can drive the acceleration in the low redshift provided that its regularized coefficient has the same order as the squared of the ratio of the reduced Planck mass to the Hubble parameter.
description: major revision, 17 pages, typos corrected, accepted by Physics of the Dark Universe
Alternating copolymers with glycyl-glycine and alanyl-alanine side-chain pendants: synthesis, characterization and solution properties
Creators: name: Goswami, Krishna Gopal
name: Saha, Biswajit
name: Priyadarsi De
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified

description: A series of chiral alternating copolymers based on glycyl-glycine attached styrenic monomer (VG) and alanyl-alanine tethered maleimide (MA) are synthesized through reversible addition-fragmentation chain transfer (RAFT) polymerization. The alternating sequential arrangement of the two monomers along the synthetic copolymer chain is systematically established through 1H and 13C NMR spectroscopic investigation. The thermal as well as chiroptical characteristics of the copolymers are also studied. Interestingly, the copolymers show unusual luminescence characteristics in different organic solvents under UV light irradiation, whereas in the solid state they emit blue, green and red fluorescence as witnessed from the corresponding fluorescence microscopy micrographs. Furthermore, after successful Boc group removal, the deprotected copolymers show pH-dependent solubility variation in aqueous solution with an almost invariant transition pH with respect to varying chain lengths of the polymers. Thus, the strategy reported herein offers a notable direction to fabricate various dipeptide-based sequence-controlled polymers with promising applications.
L'evoluzione del pensiero economico. (Evolutions of thought in economics)
Creators: name: SHACKLE, G.L.S.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: History of economic thought, Classical, Keynesian, Sraffian
subject: B15, B20

description: L' articolo riassume brevemente la storia del pensiero economico da Quesnay al 1920 - '30 concentrandosi sulla visione pre-analitica e le questioni essenziali esposte dagli economisti in tempi diversi . Esso si ispira in particolare alle principali idee e temi che collegano la tradizione classica , basata sulla distribuzione del surplus , con la tradizione keynesiana e Sraffiana The article briefly summarises the history of economic thought from Quesnay to 1920s-30s focusing on the pre-analytical vision and essential questions answered by economists at different times. It specifically draws the main ideas and themes that connect the classical tradition, based on the distribution of the surplus, with the Keynesian and Sraffian tradition. JEL: B15, B20
description: Moneta e Credito, V. 33, N. 129 (1980)
Tropical Tensor Network for Ground States of Spin Glasses
Creators: name: Liu, Jin-Guo
name: Wang, Lei
name: Zhang, Pan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: Computation (stat.CO)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We present a unified exact tensor network approach to compute the ground state energy, identify the optimal configuration, and count the number of solutions for spin glasses. The method is based on tensor networks with the Tropical Algebra defined on the semiring. Contracting the tropical tensor network gives the ground state energy; differentiating through the tensor network contraction gives the ground state configuration; mixing the tropical algebra and the ordinary algebra counts the ground state degeneracy. The approach brings together the concepts from graphical models, tensor networks, differentiable programming, and quantum circuit simulation, and easily utilizes the computational power of graphical processing units (GPUs). For applications, we compute the exact ground state energy of Ising spin glasses on square lattice up to 1024 spins, on cubic lattice up to 216 spins, and on 3 regular random graphs up to 220 spins, on a single GPU; We obtain exact ground state energy of (+/-)J Ising spin glass on the chimera graph of D-Wave quantum annealer of 512 qubits in less than 100 seconds and investigate the exact value of the residual entropy of (+/-)J spin glasses on the chimera graph; Finally, we investigate ground-state energy and entropy of 3-state Potts glasses on square lattices up to size 18 x 18. Our approach provides baselines and benchmarks for exact algorithms for spin glasses and combinatorial optimization problems, and for evaluating heuristic algorithms and mean-field theories.
description: code: https://github.com/TensorBFS/TropicalTensors.jl
The pseudoatomic orbital basis: electronic accuracy and soft-mode distortions in ABO$_3$ perovskites
Creators: name: Baker, Jack S.
name: Miyazki, Tsuyoshi
name: Bowler, David R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The perovskite oxides are known to be susceptible to structural distortions over a long wavelength when compared to their parent cubic structures. From an ab initio simulation perspective, this requires accurate calculations including many thousands of atoms; a task well beyond the remit of traditional plane wave-based density functional theory (DFT). We suggest that this void can be filled using the methodology implemented in the large-scale DFT code, CONQUEST, using a local pseudoatomic orbital (PAO) basis. Whilst this basis has been tested before for some structural and energetic properties, none have treated the most fundamental quantity to the theory, the charge density $n(\mathbf{r})$ itself. An accurate description of $n(\mathbf{r})$ is vital to the perovskite oxides due to the crucial role played by short-range restoring forces (characterised by bond covalency) and long range coulomb forces as suggested by the soft-mode theory of Cochran and Anderson. We find that modestly sized basis sets of PAOs can reproduce the plane-wave charge density to a total integrated error of better than 0.5% and provide Bader partitioned ionic charges, volumes and average charge densities to similar degree of accuracy. Further, the multi-mode antiferroelectric distortion of PbZrO$_3$ and its associated energetics are reproduced by better than 99% when compared to plane-waves. This work suggests that electronic structure calculations using efficient and compact basis sets of pseudoatomic orbitals can achieve the same accuracy as high cutoff energy plane-wave calculations. When paired with the CONQUEST code, calculations with high electronic and structural accuracy can now be performed on many thousands of atoms, even on systems as delicate as the perovskite oxides.
title: Genomic and Phenotypic Analyses of Polychaete Sibling Species Platynereis dumerilii and Platynereis massiliensis in Relation to Ocean Acidification
Creators: name: Valvassori, Giulia
Publisher: name: The Open University
Year: 2018

description: The increase of anthropogenic carbon dioxide emissions and the subsequent uptake of CO2 by the sea, is leading to a decrease in the pH of the oceans, a process known as Ocean Acidification. One of the main challenges of the current research on climate change is to determine how marine species respond to low pH/elevated pCO2 conditions.

 This thesis has investigated the effects of natural OA on the polychaete species Platynereis dumerilii and its sibling P. massiliensis (Annelida, Nereididae) as driver of genetic differentiation and phenotype/genotype selection. Platynereis spp. populations were sampled in five geographical areas situated along a thermo-latitudinal gradient along the Italian coasts, characterized by different pH conditions (acid vs normal). A multidisciplinary approach, focused on different aspects of the target species biology, was chosen and the following analyses were performed: (a) morphological and morphometric analyses of different populations/genotypes; (b) laboratory rearing of different populations to study the reproductive biology and gamete morphology; (c) population genetics by the amplification of a mitochondrial DNA marker (COI); (d) population genomics by a next-generation sequencing approach (RAD-seq); (e) background analyses and a long term laboratory experiment on selected genotypes/populations to study physiological responses to different pH conditions.

 This work has confirmed that Platynereis dumerilii and P. massiliensis represent two complexes of sibling species characterized by contrasting life history traits, reproductive biology and gamete morphology. The overall Platynereis massiliensis predominance in the CO2 vent systems is not a direct consequence of elevated pCO2, but it seems to derive from a winning reproductive strategy (brooding habit) in low pH conditions. Unlike Platynereis dumerilii, P. massiliensis is potentially able to thrive in the CO2 vents thanks to the higher stability of its antioxidant defence systems over temporal scale and its greater responsiveness to extreme hypercapnia conditions.
L'avvenire del sistema monetario mondiale. (The future of the international monetary system)
Creators: name: TRIFFIN, R.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: International monetary system, floating exchange rates, control, liquidity, commercial banking
subject: E42

description: Il lavoro sostiene che sulla fantastica esplosione di liquidità internazionale fornita al mercato, negli ultimi anni né quelli stabili , né i tassi di cambio fluttuanti possono funzionare in modo soddisfacente in assenza di qualsiasi controllo internazionale , e vincoli da parte delle autorità monetarie e del sistema bancario commerciale, . L'autore si concentra sugli aspetti inflazionistici di questo fenomeno , trascurando i problemi della recessione e la disoccupazione .. The work argues that neither stable, nor floating exchange rates can function satisfactorily in the absence of any international control, and restraints, over the fantastic explosion of international liquidity provided to the market, in recent years, by the monetary authorities and the commercial banking system. The author focuses on the inflationary aspects of this phenomenon, neglecting the problems of recession and unemployment. JEL: E42
description: Moneta e Credito, V. 33, N. 129 (1980)
Theory of microwave-induced oscillations in the magnetoconductivity of a 2D electron gas
Creators: name: Dmitriev, I. A.
name: Vavilov, M. G.
name: Aleiner, I. L.
name: Mirlin, A. D.
name: Polyakov, D. G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We develop a theory of magnetooscillations in the photoconductivity of a two-dimensional electron gas observed in recent experiments. The effect is governed by a change of the electron distribution function induced by the microwave radiation. We analyze a nonlinearity with respect to both the dc field and the microwave power, as well as the temperature dependence determined by the inelastic relaxation rate.
description: Extended version of cond-mat/0310668. 12 pages, 4 figures. V2: published version (minor changes, Fig. 4 corrected, references added)
Crowding out: i problemi reali. ( Crowding out: the real issues)
Creators: name: WILSON, T.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Financial crowding out, investment, interest rates, full employment
subject: E22, E24, E43, E62

description: Il presente lavoro esamina il dibattito sul crowding out finanziario . Anche se questo è stato descritto come l'approccio accademico di crowding -out , l'approccio ha dimostrato di essere utile per aiutare a contrastare l'abitudine neo- keynesiana profondamente radicata del supporre che l'offerta di fondi è sempre completamente disponibile . La rimozione di questa ipotesi speciale equivale di fatto a una accettazione della visione precedente e ingiustamente accantonata che il risparmio e gli investimenti sono in grado di influenzare direttamente il tasso di interesse, soprattutto nel breve periodo . The present work reviews the debate on financial crowding-out in an economy with slack resources. Although this has been described as the academic approach to crowding-out, it has proved to be useful in helping to break the deeply engrained neo-Keynesian habit of assuming that the supply of funds is always fully accommodating. The removal of this special assumption amounts in effect to an acceptance of the earlier and wrongly ousted view that saving and investment can directly affect the rate of interest, especially in the short run. The author then considers the practical task of bringing financial crowding-out into an appropriate relationship with crowding-out in real terms and the changing meaning of the term “full employment”. JEL: E22, E24, E43, E62
description: Moneta e Credito, V. 33, N. 129 (1980)
Scala Mobile, salari e prezzi in un modello di equilibrio di lungo periodo. (Full wage indexation, salaries and prices in a model of long-run equilibrium.)
Creators: name: NICCOLI, A.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Mobility, inflation, prices, wages
subject: E31

description: In questo lavoro vengono esaminati gli effetti a lungo termine di piena indicizzazione dei salari ai prezzi in un sistema economico . In particolare , l'autore dimostra che la piena indicizzazione dei salari , mentre amplifica i fenomeni inflazionistici , non influenza il livello o tasso di crescita dei salari reali .Viene proposto un meccanismo alternativo con effetti inflazionistici molto più piccoli .. In this paper the long-term effects of full wage indexation to prices in an economic system are examined. In particular, the author shows that full wage indexation, while amplifying the inflationary phenomena, does not affect the level or growth rate of real wages. An alternative mechanism with much smaller inflationary effects is then proposed. JEL: E31
description: Moneta e Credito, V. 33, N. 129 (1980)
I miei primi lavori su problemi monetari internazionali. (My early work on international monetary problems)
Creators: name: MACHLUP, F.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: International monetary economics, Fritz Machlup
subject: B31, E40, F33

description: L'articolo è il primo di una serie di tre in cui l' autore passa in rassegna il suo lavoro in economia monetaria internazionale . In questo intervento , le pubblicazioni dell'autore nel periodo 1923-1940 sono intervistati . The article is the first in a series of three in which the author reviews his work in international monetary economics. In this instalment, author’s publications over the period 1923 to 1940 are surveyed. JEL: B31, E40, F33
description: Moneta e Credito, V. 33, N. 130 (1980)
Peregrinazione di un economista e scelta di un percorso. (Peregrinations of an economist and the choice of his route)
Creators: name: PERROUX, F.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Francois Perroux, biography, recollections
subject: B31

description: L'articolo è un contributo ad una serie di ricordi e riflessioni sulle esperienze professionali dei illustri economisti con Banca Nazionale del Lavoro Quarterly Review iniziate nel 1979. In esso Francois Perroux racconta la sua attività in economia oltre mezzo secolo di indagini. The paper is a contribution to a series of recollections and reflections on the professional experiences of distinguished economists which the Banca Nazionale del Lavoro Quarterly Review started in 1979. In it Francois Perroux recounts his pursuits in economics over half a century of investigation. JEL: B31
description: Moneta e Credito, V. 33, N. 130 (1980)
No radiative corrections to the Carroll-Field-Jackiw term beyond one-loop order
Creators: name: Brito, L. C. T.
name: Felipe, J. C. C.
name: Petrov, A. Yu.
name: Scarpelli, A. P. Baêta
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate explicitly the absence of the quantum corrections to the Carroll-Field-Jackiw (CFJ) term beyond one-loop within the Lorentz-breaking CPT-odd extension of QED. The proof holds within two prescriptions of quantum calculations, with the axial vector in the fermion sector {}treated either as a perturbation or as a contribution in the exact propagator of the fermion field.
description: 11 pages, 7 figures. New version with expanded discussion. The result of the paper does not change
Inflazione da "Oil Push"? (Oil push inflation?)
Creators: name: PARKIN, M.
Publisher: name: Moneta e Credito
Year: 2013
Subjects: subject: Oil-push, inflation, empirical analysis, theory
subject: E31

description: Il presente lavoro indaga la visione " oilpush " dell'inflazione , la linea ict di ragionamento e le sue conclusioni esaminando l'evoluzione dell'inflazione e variabili correlate in sei paesi , nel periodo 1968-1978 . L'articolo è principalmente empirico , con proposte di standard di macroeconomia e teorie qui monetaria sono sullo sfondo . L'ipotesi di Oil push viene prima esaminata e giudicata essere privo diefficacia empirica . Le politiche monetarie degli ultimi dieci anni sono esaminate e riscontrate per spiegare l' evoluzione dell'inflazione . Infine sono brevemente esaminati i costi della riduzione dei tassi di inflazione nel periodo post - 1973 . The present work investigates the “oilpush” view of inflation, its line of reasoning and its conclusions, by examining the evolution of inflation and related variables in six countries, over the period 1968-1978. The paper is mainly empirical, using standard propositions from macroeconomics and monetary theory which are in the background, however, rather than the forefront. The oil push hypothesis is first examined and found to be lacking in empirical content. The monetary policies of the last decade are then reviewed and found to account well for the evolution of inflation. Finally, the costs of the reduction of inflations in the post-1973 period are briefly examined. JEL: E31
description: Moneta e Credito, V. 33, N. 130 (1980)