cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 2 of The impact of the Nutri-Score front-of-pack nutrition label on purchasing intentions of unprocessed and processed foods: post-hoc analyses from three randomized controlled trials
Creators: name: Egnell, Manon
name: Galan, Pilar
name: Fialon, Morgane
name: Touvier, Mathilde
name: Péneau, Sandrine
name: Kesse-Guyot, Emmanuelle
name: Hercberg, Serge
name: Julia, Chantal
Publisher: name: figshare
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 2: Supplemental Figure 2. Images of the Nutri-Score and the Reference Intakes labels used in the trials.
Parameters of Three Selected Model Galactic Potentials Based on the Velocities of Objects at Distances up to 200 kpc
Creators: name: Bobylev, V. V.
name: Bajkova, A. T.
name: Gromov, A. O.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This paper is a continuation of our recent paper devoted to refining the parameters of three component (bulge, disk, halo) axisymmetric model Galactic gravitational potentials differing by the expression for the dark matter halo using the velocities of distant objects. In all models the bulge and disk potentials are described by the Miyamoto-Nagai expressions. In our previous paper we used the Allen-Santill'an (I), Wilkinson--Evans (II), and Navarro-Frenk-White (III) models to describe the halo. In this paper we use a spherical logarithmic Binney potential (model IV), a Plummer sphere (model V), and a Hernquist potential (model VI) to describe the halo. A set of present-day observational data in the range of Galactocentric distances R from 0 to 200 kpc is used to refine the parameters of the listed models, which are employed most commonly at present. The model rotation curves are fitted to the observed velocities by taking into account the constraints on the local matter density and the vertical force . Model VI looks best among the three models considered here from the viewpoint of the achieved accuracy of fitting the model rotation curves to the measurements. This model is close to the Navarro-Frenk-White model III refined and considered best in our previous paper, which is shown using the integration of the orbits of two globular clusters, Lynga 7 and NGC 5053, as an example.
description: 14 pages, 3 figures, 3 tables. arXiv admin note: substantial text overlap with arXiv:1607.08050
The Order of Sir Bondi
Creators: name: Barreto, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The direct and indirect relationship between the British physicist originally from Austria, Sir Hermann Bondi, and Venezuelan physics are presented. Special emphasis is made of his more remarkable human qualities, nobility and humbleness, besides his important contribution to General Relativity and to the European science agencies. Self--declared as a staunch disciple of Popperian philosophy, Bondi defended the "hard and dirty" physics against the "inmaculate and beauty" physics. Attention is focused on two cornerstones of Bondi's work, followed thoroughly by Luis Herrera and disciples in Venezuela.
description: 9 pages, 1 figure; to appear in Interciencia; bilingual version; some minor changes in the text and typos corrected
Il percorso dell’identità nazionale pluralistica a Taiwan dai processi di colonizzazione alla democratizzazione
Creators: name: Pelaggi, Stefano
Publisher: name: OrizzonteCina
Year: 2020

description: This article explores Taiwanese national identity, through an analytical excursus of the composite ethnic and linguistic mosaic of the island's inhabitants from 1500 to the present day. The relationship with the Chinese empire and the relative indifference of the Imperial court in Beijing are analysed in the first part. Subsequent Japanese colonization represented the first attempt to align the inhabitants of the island along a new paradigm of cultural uniformity, a hegemonic attempt of colonial nature that encouraged the Taiwanese to look at themselves, through the eyes of the colonizer, as a coherent entity. The ethnic fracture that emerged forcefully upon the arrival of the Kuomintang troops after World War II resulted in a further remoulding of Taiwanese identity. The process of redefining national identity became an essential tool in the electoral contest, in the aftermath of the democratization process of the country.
description: OrizzonteCina, V. 11 N. 1 (2020): Taiwan: prospettive al di là dello stretto
Long-time existence for Yang-Mills flow
Creators: name: Waldron, Alex
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We establish that finite-time singularities do not occur in four-dimensional Yang-Mills flow, confirming the conjecture of Schlatter, Struwe, and Tahvildar-Zadeh. The proof relies on a weighted energy identity and sharp decay estimates in the neck region.
description: Final version accepted in Inventiones. 56pp
Performance Analysis of 6TiSCH Networks Using Discrete Events Simulator
Creators: name: Peron, Guilherme de Santi
name: Monteiro, Marcos Eduardo Pivaro
name: de Barros, João Luís Verdegay
name: Farhat, Jamil
name: Brante, Glauber
Publisher: name: arXiv
Year: 2024
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The Internet of Things (IoT) empowers small devices to sense, react, and communicate, with applications ranging from smart ordinary household objects to complex industrial processes. To provide access to an increasing number of IoT devices, particularly in long-distance communication scenarios, a robust low-power wide area network (LPWAN) protocol becomes essential. A widely adopted protocol for this purpose is 6TiSCH, which builds upon the IEEE 802.15.4 standard. It introduces time-slotted channel hopping (TSCH) mode as a new medium access control (MAC) layer operating mode, in conjunction with IEEE 802.15.4g, which also defines both MAC and physical layer (PHY) layers and provides IPv6 connectivity for LPWAN. Notably, 6TiSCH has gained adoption in significant standards such as Wireless Intelligent Ubiquitous Networks (Wi-SUN). This study evaluates the scalability of 6TiSCH, with a focus on key parameters such as queue size, the maximum number of single-hop retries, and the slotframe length. Computational simulations were performed using an open-source simulator and obtained the following results: increasing the transmission queue size, along with adjusting the number of retries and slotframe length, leads to a reduction in the packet error rate (PER). Notably, the impact of the number of retries is particularly pronounced. Furthermore, the effect on latency varies based on the specific combination of these parameters as the network scales.
Atomic quasi-Bragg diffraction in a magnetic field
Creators: name: Domen, K. F. E. M.
name: Jansen, M. A. H. M.
name: van Dijk, W.
name: van Leeuwen, K. A. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on a new technique to split an atomic beam coherently with an easily adjustable splitting angle. In our experiment metastable helium atoms in the |{1s2s}^3S_1 M=1> state diffract from a polarization gradient light field formed by counterpropagating σ^+ and σ^- polarized laser beams in the presence of a homogeneous magnetic field. In the near-adiabatic regime, energy conservation allows the resonant exchange between magnetic energy and kinetic energy. As a consequence, symmetric diffraction of |M=0> or |M=-1> atoms in a single order is achieved, where the order can be chosen freely by tuning the magnetic field. We present experimental results up to 6th order diffraction (24 \hbar k momentum splitting, i.e., 2.21 m/s in transverse velocity) and present a simple theoretical model that stresses the similarity with conventional Bragg scattering. The resulting device constitutes a flexible, adjustable, large-angle, three-way coherent atomic beam splitter with many potential applications in atom optics and atom interferometry.
description: 4 pages, 5 figures
Reinforcenment Learning-Aided NOMA Random Access: An AoI-Based Timeliness Perspective
Creators: name: Pereira, Felippe Moraes
name: Farhat, Jamil de Araujo
name: Rebelatto, João Luiz
name: Brante, Glauber
name: Souza, Richard Demo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this paper, we investigate the age-of-information (AoI) of a power domain non-orthogonal multiple access (NOMA) network, where multiple internet-of-things (IoT) devices transmit to a common gateway in a grant-free random fashion. More specifically, we consider a framed setup composed of multiple time slots, and resort to the $Q$-learning algorithm to properly define, in a distributed manner, the time slot and the power level each IoT device transmits within a frame. In the proposed AoI-QL-NOMA scheme, the $Q$-learning reward is adapted with the aim of minimizing the average AoI of the network, while only requiring a single feedback bit per time slot, in a frame basis. Our results show that AoI-QL-NOMA significantly improves the AoI performance compared to some recently proposed schemes, without significantly reducing the network throughput.
Coding for the Non-Orthogonal Amplify-and-Forward Cooperative Channel
Creators: name: Kraidy, Ghassan M.
name: Gresset, Nicolas
name: Boutros, Joseph J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this work, we consider the problem of coding for the half-duplex non-orthogonal amplify-and-forward (NAF) cooperative channel where the transmitter to relay and the inter-relay links are highly reliable. We derive bounds on the diversity order of the NAF protocol that are achieved by a distributed space-time bit-interleaved coded modulation (D-ST-BICM) scheme under iterative APP detection and decoding. These bounds lead to the design of space-time precoders that ensure maximum diversity order and high coding gains. The word error rate performance of D-ST-BICM are also compared to outage probability limits.
description: 25 pages, 10 figures, submitted to IEEE Transactions on Information Theory
Simone Pieranni, Red Mirror. Il nostro futuro si scrive in Cina (Bari e Roma: Laterza, 2020)
Creators: name: Gabusi, Giuseppe
Publisher: name: OrizzonteCina
Year: 2020

description: N/A
description: OrizzonteCina, V. 11 N. 2 (2020): Italia e Cina: 50 anni di relazioni
Numerical investigations of non-uniqueness for the Navier-Stokes initial value problem in borderline spaces
Creators: name: Guillod, Julien
name: Šverák, Vladimír
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Numerical Analysis (math.NA)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35A02, 35D30, 35Q30, 76D05, 76D03, 76M10

description: We consider the Cauchy problem for the incompressible Navier-Stokes equations in $\mathbb{R}^3$ for a one-parameter family of explicit scale-invariant axi-symmetric initial data, which is smooth away from the origin and invariant under the reflection with respect to the $xy$-plane. Working in the class of axi-symmetric fields, we calculate numerically scale-invariant solutions of the Cauchy problem in terms of their profile functions, which are smooth. The solutions are necessarily unique for small data, but for large data we observe a breaking of the reflection symmetry of the initial data through a pitchfork-type bifurcation. By a variation of previous results by Jia & Šverák (2013) it is known rigorously that if the behavior seen here numerically can be proved, optimal non-uniqueness examples for the Cauchy problem can be established, and two different solutions can exists for the same initial datum which is divergence-free, smooth away from the origin, compactly supported, and locally $(-1)$-homogeneous near the origin. In particular, assuming our (finite-dimensional) numerics represents faithfully the behavior of the full (infinite-dimensional) system, the problem of uniqueness of the Leray-Hopf solutions (with non-smooth initial data) has a negative answer and, in addition, the perturbative arguments such those by Kato (1984) and Koch & Tataru (2001), or the weak-strong uniqueness results by Leray, Prodi, Serrin, Ladyzhenskaya and others, already give essentially optimal results. There are no singularities involved in the numerics, as we work only with smooth profile functions. It is conceivable that our calculations could be upgraded to a computer-assisted proof, although this would involve a substantial amount of additional work and calculations, including a much more detailed analysis of the asymptotic expansions of the solutions at large distances.
description: 31 pages, 19 figures
Additional file 1 of The impact of the Nutri-Score front-of-pack nutrition label on purchasing intentions of unprocessed and processed foods: post-hoc analyses from three randomized controlled trials
Creators: name: Egnell, Manon
name: Galan, Pilar
name: Fialon, Morgane
name: Touvier, Mathilde
name: Péneau, Sandrine
name: Kesse-Guyot, Emmanuelle
name: Hercberg, Serge
name: Julia, Chantal
Publisher: name: figshare
Year: 2021
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 1: Supplemental Figure 1. Flowcharts of the three randomized controlled trials.
Extentions of rings and modules
Creators: name: Chew, Kim Lin
Publisher: name: University of British Columbia
Year: 2011

description: The primary objective of this thesis is to present a unified account of the various generalizations of the concept of ring of quotients given by K, Asano (1949), R. E. Johnson (1951), Y. Utumi (1956), G. D. Findlay and J. Lambek (1958). A secondary objective is to investigate how far the commutative localization can be carried over to the noncommutative case. We begin with a formulation of the notion of D-system of right ideals of a ring R. The investigation of the D-systems was motivated by the fact that each maximal right quotient ring of R consists precisely of semi R-homomorphisms into R with domains in a specific D-system of right ideals of R or of R¹, the ring obtained from R by adjoining identity. A nonempty family X of right ideals of R is called a D-system provided the following three conditions holds: D1. Every right ideal of R containing some member of X is in X. D2. For any two right ideals A and B of R belonging to X, φ⁻¹B belongs to X for each R-homomorphism φ of A into R. D3. If A belongs to X and if for each a in A there exists Ba in X, then the ideal sum of aBa (a in A) is in X, Each D-system X of right ideals of R induces a modular closure operation on the lattice L(M) of all submodules of an R-module M and hence gives rise to a set Lx(M) of closed submodules of M. We are able to set up an isomorphism between the lattice of all modular closure operations on L(R) and the lattice of all D-systems of right ideals of R and characterize the D-systems X used in Asano's, Johnson's and Uturai's constructions of«quotient rings in terms of properties of Lx(R). In view of the intimate relation between the rings of quotients of a ring R and the extensions of R-modules, we generalize the concepts of infective R-module, rational and essential extensions of an R-module corresponding to a D-system T of right ideals of R¹. The existence and uniqueness of the maximal Y-essential extension, minimal Y-injective extension and maximal Y-rational extension of an R-module and their mutual relations are established. Finally, we come to the actual constructions of various extensions of rings and modules. The discussions center around the centralizer of a ring over a module, the maximal essential and rational extensions and the different types of rings of right quotients. We include here also a partial, though not satisfactory, solution of the noncommutative localization problem.
Absence of squirt singularities for the multi-phase Muskat problem
Creators: name: Cordoba, Diego
name: Gancedo, Francisco
Publisher: name: arXiv
Year: 2009
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper we study the evolution of multiple fluids with different constant densities in porous media. This physical scenario is known as the Muskat and the (multi-phase) Hele-Shaw problems. In this context we prove that the fluids do not develop squirt singularities.
description: 16 pages
Quando i cinesi d’Italia mutarono bandiera e diventarono “cinesi d’oltremare patriottici”
Creators: name: Brigadoi Cologna, Daniele
Publisher: name: OrizzonteCina
Year: 2020

description: N/A
description: OrizzonteCina, V. 11 N. 2 (2020): Italia e Cina: 50 anni di relazioni
L’Italia e le società di telecomunicazioni cinesi tra congiuntura politica globale e incertezze interne
Creators: name: Silvestri, Francesco
name: Mariano, Virginia
Publisher: name: OrizzonteCina
Year: 2020

description: N/A
description: OrizzonteCina, V. 11 N. 2 (2020): Italia e Cina: 50 anni di relazioni
Indication of a deeply bound compact K-pp state formed in the pp -> p Lambda K+ reaction at 2.85 GeV
Creators: name: Yamazaki, T.
name: Maggiora, M.
name: Kienle, P.
name: Suzuki, K.
name: Amoroso, A.
name: Alexeev, M.
name: Balestra, F.
name: Bedfer, Y.
name: Bertini, R.
name: Bland, L. C.
name: Brenschede, A.
name: Brochard, F.
name: Bussa, M. P.
name: Choi, Seonho
name: Colantoni, M. L.
name: Dressler, R.
name: Dzemidzic, M.
name: Faivre, J. -Cl.
name: Ferrero, L.
name: Foryciarz, J.
name: Froehlich, I.
name: Frolov, V.
name: Garfagnini, R.
name: Grasso, A.
name: Heinz, S.
name: Jacobs, W. W.
name: Kuhn, W.
name: Maggiora, A.
name: Panzieri, D.
name: Pfaff, H. -W.
name: Pontecorvo, G.
name: Popov, A.
name: Ritman, J.
name: Salabura, P.
name: Sosio, S.
name: Tchalyshev, V.
name: Vigdor, S. E.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We have analyzed data of the DISTO experiment on the exclusive pp -> p Lambda K+ reaction at 2.85 GeV to search for a strongly bound compact K-pp (= X) state to be formed in the pp -> K+ + X reaction. The observed spectra of the K+ missing-mass and the p Lambda invariant-mass with high transverse momenta of p and K+ revealed a broad distinct peak with a mass M_X = 2265 +- 2 (stat) +- 5 (syst) MeV/c2 and a width Gamma_X = 118 +- 8 (stat) +- 10 (syst) MeV.
description: 4 pages, 4 figures
Regularity results for a class of obstacle problems with $p,q-$growth conditions
Creators: name: Caselli, Michele
name: Eleuteri, Michela
name: di Napoli, Antonia Passarelli
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we prove the local boundedness as well as the local Lipschitz continuity for solutions to a class of obstacle problems of the type $$\min\left\{\int_Ω{F(x, Dz)}: z\in \mathcal{K}_ψ(Ω)\right\}.$$ Here $\mathcal{K}_ψ(Ω)$ is set of admissible functions $z \in W^{1,p}(Ω)$ such that $z \ge ψ$ a.e. in $Ω$, $ψ$ being the obstacle and $Ω$ being an open bounded set of $\mathbb{R}^n$, $n \ge 2$. The main novelty here is that we are assuming $ F(x, Dz)$ satisfying $(p,q)$-growth conditions {and less restrictive assumptions on the obstacle with respect to the existing regularity results}.
Neural Networks for cosmological model selection and feature importance using Cosmic Microwave Background data
Creators: name: Ocampo, I.
name: Cañas-Herrera, G.
name: Nesseris, S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The measurements of the temperature and polarisation anisotropies of the Cosmic Microwave Background (CMB) by the ESA Planck mission have strongly supported the current concordance model of cosmology. However, the latest cosmological data release from ESA Planck mission still has a powerful potential to test new data science algorithms and inference techniques. In this paper, we use advanced Machine Learning (ML) algorithms, such as Neural Networks (NNs), to discern among different underlying cosmological models at the angular power spectra level, using both temperature and polarisation Planck 18 data. We test two different models beyond $Λ$CDM: a modified gravity model: the Hu-Sawicki model, and an alternative inflationary model: a feature-template in the primordial power spectrum. Furthermore, we also implemented an interpretability method based on SHAP values to evaluate the learning process and identify the most relevant elements that drive our architecture to certain outcomes. We find that our NN is able to distinguish between different angular power spectra successfully for both alternative models and $Λ$CDM. We conclude by explaining how archival scientific data has still a strong potential to test novel data science algorithms that are interesting for the next generation of cosmological experiments.
description: 24 pages, 9 figures, 2 tables, comments welcome
Italia-Cina: le interazioni in ambito navale e la proiezione cinese nel Mediterraneo allargato
Creators: name: Dossi, Simone
Publisher: name: OrizzonteCina
Year: 2020

description: In October 1979, the Italian naval vessels “Ardito” and “Lupo” were welcomed in Shanghai in the first visit by the Italian Navy to the People’s Republic of China. Despite this promising start, exchanges with the People’s Liberation Army Navy remained limited for a long time. Since the early 2010s, however, interactions have intensified, mostly amid China’s growing projection towards the wider Mediterranean region. On the one hand, the two navies have increasingly interacted in the Gulf of Aden, in the context of their respective anti-piracy missions. On the other, such interactions have gradually extended to the Mediterranean Sea, with an increasing frequency of Chinese visits to Italian ports. While China’s naval projection towards the wider Mediterranean region has fostered stability in the region, as demonstrated by Beijing’s contribution to anti-piracy efforts in the Gulf of Aden, its broader strategic implications for Italy should not be overlooked.
description: OrizzonteCina, V. 11 N. 2 (2020): Italia e Cina: 50 anni di relazioni
Taking the Long View?
Creators: name: Brett, Daniel
Publisher: name: Rural History Yearbook
Year: 2022

description: Der Aufsatz beinhaltet eine vergleichende Analyse der rumänischen und polnischen Agrarbewegungen und Bauernparteien von der Mitte des 19. Jahrhunderts bis 1947. In den habsburgischen Provinzen Siebenbürgen und Galizien bewegten sich die Bauernparteien in einem je unterschiedlichen politischen Kontext im Vergleich zum rumänischen Altreich und Zentralpolen. Insbesondere die langjährige Verknüpfung der nationalen mit der sozialen Frage führte in der Zwischenkriegszeit zu erheblichen Integrationsschwierigkeiten der Agrarbewegungen zu nationalen Bauernparteien sowie dieser Parteien in das politische System. Diese Langzeitbetrachtung ermöglicht, die traditionelle Sicht der kommunistischen Machtergreifung im Zeitraum 1944-1947 in Frage zu stellen. Diese muss auch vor dem Hintergrund eines weitgehenden Scheiterns der Bauernparteien gelesen werden, den sozioökonomischen und kulturellen Wandel im ländlichen Bereich politisch zu gestalten.
description: Rural History Yearbook, Bd. 7 (2010): Transforming Rural Societies. Agrarian Property and Agrarianism in East Central Europe in the Nineteenth and Twentieth Centuries
Effective reconstruction of generic genus 5 curves from their theta hyperplanes
Creators: name: Lehavi, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14H40, 14Q20

description: We effectively reconstruct the set of enveloping quadrics of a generic curve C of genus 5 from its theta hyperplanes; for a generic genus 5 curve C this data suffices to effectively reconstruct C. As a consequence we get a complete description of the Schottky locus in genus 5 in terms of theta hyperplanes. The computational part of the proof is a certified numerical argument.
description: 25 pages + accompanying cpp computer program in the ancillary files
Characterizations of the Hardy space $\mathcal{H}_{FIO}^{1}(\mathbb{R}^{n})$ for Fourier integral operators
Creators: name: Fan, Zhijie
name: Liu, Naijia
name: Rozendaal, Jan
name: Song, Liang
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary 42B35. Secondary 35S30, 42B30

description: The Hardy spaces for Fourier integral operators $\mathcal{H}_{FIO}^{p}(\mathbb{R}^{n})$, for $1\leq p\leq \infty$, were introduced by Smith in [Smith,1998] and Hassell et al. in [Hassell-Portal-Rozendaal,2020]. In this article, we give several equivalent characterizations of $\mathcal{H}_{FIO}^{1}(\mathbb{R}^{n})$, for example in terms of Littlewood--Paley $g$ functions and maximal functions. This answers a question from [Rozendaal,2021]. We also give several applications of the characterizations.
description: 24 pages. Minor changes to the previous version. To appear in Studia Mathematica
Il Mediterraneo allargato e la Cina come “offshore balancer”
Creators: name: Ghiselli, Andrea
name: Giuffrida, Maria Grazia
Publisher: name: OrizzonteCina
Year: 2020

description: As the wider Mediterranean region makes its return to the centre of international politics, China’s role in it is also becoming more prominent. This study argues that China, so far, has adopted a strategy of offshore balancing in order to weaken American influence in that region without, however, making evident attempts to establish its own sphere of influence. China’s balancing act is performed through various diplomatic means and multilateral platforms, especially the UN, to maximize the effectiveness of its strategy while minimizing the risks to China’s political and economic interests in the region. Within a defensive neorealist framework, this argument is based on the analysis of China’s approach to Libya, Syria, and Iran. This study has important implications on how we understand China’s approach to regional crises, and regional and extra-regional actors.
description: OrizzonteCina, V. 11 N. 2 (2020): Italia e Cina: 50 anni di relazioni
Zajednica otvorene nauke Srbije
Creators: name: Miljković, Nadica
Publisher: name: Zenodo
Year: 2021
Subjects: open science
otvorena nauka
open science community
zajednica otvorene nauke
research
library
istraživanje
biblioteka

description: Prezentacija koja je održana na otvaranju osnivačkog sastanka Zajednice otvorene nauke Srbije (eng. Open Science Community Serbia, OSCS) 2. novembra 2021. godine.
description: Prezentacija sadrži i agendu OSCS sastanka.
L’ascesa del populismo e il suo impatto sulle relazioni sino-europee
Creators: name: Sun, Fanglu
name: Ponzini, Arianna
Publisher: name: OrizzonteCina
Year: 2020

description: Although there is no single “populist foreign policy,” populism does have a profound impact on the foreign policies of States, and on international relations by extension. Populist movements not only shape the debate but also substantially influence the way Europe engages with China. However, there is no clear evidence showing that populist governments are more negative toward China than non-populist governments. European populists have neither staked their mandate on the China card, nor focused their negative energies on China very much. Instead, as calls for greater assertiveness grow across Europe, countries governed by mainstream parties seem to take a much more negative stance. Overall, the rise of populism has contributed to fragmentation and uncertainties in European politics; therefore, it presents very significant challenges to Europe-China relations.
description: OrizzonteCina, V. 11 N. 2 (2020): Italia e Cina: 50 anni di relazioni
Anomalous properties of the local dynamics in polymer glasses
Creators: name: Casalini, R.
name: Roland, C. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The emergence of nanoscience has increased the importance of experiments able to probe the very local structure of materials, especially for disordered and heterogeneous systems. This is technologically important; for example, the nanoscale structure of glassy polymers has a direct correlation with their macroscopic physical properties. We have discovered how a local, high frequency dynamic process can be used to monitor and even predict macroscopic behavior in glassy polymers. Polyvinylethylenes vitrified by different chemical and thermodynamic pathways exhibit different densities in the glassy state. We find that the rate and amplitude of a high frequency relaxation mode (the Johari-Goldstein process involving local motion of segments of the chain backbone) can either correlate or anti-correlate with the density. This implies that neither the unoccupied (free) volume nor the configurational entropy governs the local dynamics in any general sense. Rather it is the magnitude of the fluctuations in local density that underlie these nm-scale motions. We show how properties of the dynamics and the density fluctuations can both be interpreted in terms of an asymmetric double well potential. Finally, since fluctuations underlie the macroscopic properties, we argue that information about the latter should be obtainable from characterization of the local dynamics.
description: 14 pages, 4 figures
“Reality check”: le relazioni bilaterali Italia-Cina in ambito economico dagli anni Settanta alle “nuove Vie della Seta”
Creators: name: Gabusi, Giuseppe
name: Prodi, Giorgio
Publisher: name: OrizzonteCina
Year: 2020

description: On the occasion of the 50th anniversary of the re-establishment of diplomatic relations between Italy and China, this article assesses the structure, dynamics and evolution of bilateral economic ties from the 1970s to 2020. Although the structures of trade and investment have changed over the past few decades, the article argues that the importance of the Chinese market for the Italian economy has always been overstated. Similarly to its European partners – but from a much weaker position – Italy faces a double dilemma vis-à-vis China: on the one hand, the Chinese market is too large for companies to overlook, but on the other hand political and commercial tensions between China and the West do not guarantee that market potential would inevitably result in profit opportunities. The economic relationship between Italy and China needs a “reality check” to rationally control the politically sensitive China debate after Italy signed the BRI memorandum in 2019.
description: OrizzonteCina, V. 11 N. 2 (2020): Italia e Cina: 50 anni di relazioni
Evaluation of scientific CMOS sensors for sky survey applications
Creators: name: Karpov, S.
name: Bajat, A.
name: Christov, A.
name: Prouza, M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Scientific CMOS image sensors are a modern alternative for a typical CCD detectors, as they offer both low read-out noise, large sensitive area, and high frame rates. All these makes them promising devices for a modern wide-field sky surveys. However, the peculiarities of CMOS technology have to be properly taken into account when analyzing the data. In order to characterize these, we performed an extensive laboratory testing of Andor Marana sCMOS camera. Here we report its results, especially on the temporal stability and linearity, and compare it to the previous versions of Andor sCMOS cameras. We also present the results of an on-sky testing of this sensor connected to a wide-field lens, and discuss its applications for an astronomical sky surveys.
description: Accepted to Astronomische Nachrichten
A Thermodynamic Constraint for the Electronic Structure of Fe-Ni Alloys at Room And High-Temperature
Creators: name: Paras, Jonathan
name: Allanore, Antoine
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The measurement of the electronic structure of metal alloys is hampered by the in-applicability of conventional quantum oscillation measurements owing to electron scattering by thermal or alloy disorder. Recent advancements in the study of the electronic contribution to the entropy suggest a path to ground transport properties in alloy equilibrium thermodynamics. Fe-Ni represents an interesting test-case because it exhibits an intricate electronic structure, order-disorder transformations, and a large solid-solution region where equilibrium data can be obtained. Using cluster modeling, the electronic contribution to the entropy can be inferred from high-temperature thermodynamic data. Electronic transport property measurements can be used to independently evaluate the electronic contribution to the entropy. Reconciling these two approaches at high temperature supports this method to study electronic structure for metal alloys.
Tra status e agency: Cina e Italia a 50 anni dalla normalizzazione delle relazioni
Creators: name: Andornino, Giovanni
Publisher: name: OrizzonteCina
Year: 2020

description: The signing of the Memorandum of Understanding for cooperation on the Belt and Road Initiative marks the culmination of several years of deepening relations between Italy and China. While many observers have emphasised the international implications of the first G-7 country formally adhering to Chinese President Xi Jinping’s signature foreign policy agenda, more attention needs to be devoted to the domestic politics and political economy rationales underlying Italy’s choices. This article argues that the contentious foreign policy choice made by Rome’s populist government in 2019 is premised on a trade-off between international status and greater bargaining power on critical trade and investment negotiations.
description: OrizzonteCina, V. 11 N. 2 (2020): Italia e Cina: 50 anni di relazioni
e-VLBI observations of GHz-Peaked Spectrum (GPS) radio sources in nearby galaxies from the AT20G survey
Creators: name: Hancock, Paul J.
name: Tingay, Steven J.
name: Sadler, Elaine M.
name: Phillips, Chris
name: Deller, Adam T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: GHz-peaked spectrum (GPS) radio sources are thought to be young objects which later evolve into FR-I and FR-II radio galaxies. We have used the Australia Telescope 20GHz (AT20G) survey catalogue to select a uniform sample of GPS sources with spectral peaks above 5GHz, which should represent the youngest members of this class. In this paper, we present e-VLBI observations of ten such objects which are associated with nearby (z<0.15) galaxies and so represent a new population of local, low--power GPS sources. Our e-VLBI observations were carried out at 4.8GHz with the Australia Telescope Long Baseline Array (LBA) using a real--time software correlator. All ten sources were detected, and were unresolved on scales of ~100mas, implying that they are typically less than 100pc in linear size.
description: 7 pages, 7 figures, 3 tables
Hausdorff measures in topological spaces
Creators: name: Willmott, Richard C.
Publisher: name: University of British Columbia
Year: 2011

description: Given a non-negative set function τ on a family ɑ of subsets of a metric space X, an outer measure ν can be generated on X as follows: for B⊂X and δ > 0, [Equations omitted] The Hausdorff s-dimensional and h-measures are special cases of this measure. A number of processes have been suggested for generating a measure on an arbitrary topological space, which generalize this Hausdorff measure process in a metric space. In this thesis we introduce and study a process for generating a measure on.an arbitrary space, which abstracts the essential idea behind all the Hausdorff measures and their generalizations, and contains them as special cases. In chapter I the concept of a measure generated on a space by a gauge and a filterbase is introduced. We show that with any such filterbase is automatically associated a topology for the space, the filterbase topology. We then impose different conditions on the filterbase and deduce resulting properties of the filterbase topology and of the measure. Measurability and approximation properties of the measure are obtained for sets defined in terms of the filterbase, and then for sets defined in terms of the filterbase topology, such as closed, compact, etc. In chapter II we consider measures generated on a topological space. We show that previous measures are special cases of our measure and that known measurability and approximation results can be obtained for them from our general theory. The relationship between the given topology and the topologies of the filterbases used to generate the various measures is examined. A number of additional processes for generating a measure on a topological space are investigated and relations among the various measures are studied. In chapter III we consider several processes for generating measures on a quasi-uniform space, showing that a number of the previously studied measures are included. In particular, we study the measure generated on a uniform space, and obtain some measurability properties by applying our general theory. In chapter IV we work in a compact Hausdorff space and generate a measure using the uniformity for the space and the process of the previous chapter. For the first time, restrictions are placed on the generating set function τ. We examine some consequences of this restriction and then introduce a partial ordering on the family of such functions which generalizes the usual ordering on the h-functions in Hausdorff h-measure theory. This ordering has been used in connection with studies of non-σ- finiteness. We show here that its interest is essentially limited to the metric case.
Regularity results for solutions to obstacle problems with Sobolev coeffcients
Creators: name: Caselli, Michele
name: Gentile, Andrea
name: Giova, Raffaella
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We establish the higher differentiability of solutions to a class of obstacle problems for integral functionals where the convex integrand f satisfies p-growth conditions with respect to the gradient variable. We derive that the higher differentiability property of the weak solution v is related to the regularity of the assigned , under a suitable Sobolev assumption on the partial map that measures the oscillation of f with respect to the x variable. The main novelty is that such assumption is independent of the dimension n and that, in the case p<=n-2, improves previous known results.
Integral orthogonal bases of small height for real polynomial spaces
Creators: name: Fukshansky, Lenny
Publisher: name: arXiv
Year: 2009
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11C08, 11G50, 05B30

description: Let $P_N(R)$ be the space of all real polynomials in $N$ variables with the usual inner product $$ on it, given by integrating over the unit sphere. We start by deriving an explicit combinatorial formula for the bilinear form representing this inner product on the space of coefficient vectors of all polynomials in $P_N(R)$ of degree $\leq M$. We exhibit two applications of this formula. First, given a finite dimensional subspace $V$ of $P_N(R)$ defined over $Q$, we prove the existence of an orthogonal basis for $(V, )$, consisting of polynomials of small height with integer coefficients, providing an explicit bound on the height; this can be viewed as a version of Siegel's lemma for real polynomial inner product spaces. Secondly, we derive a criterion for a finite set of points on the unit sphere in $R^N$ to be a spherical $M$-design.
description: 10 pages; to appear in the Online Journal of Analytic Combinatorics
TrajDiffuse: A Conditional Diffusion Model for Environment-Aware Trajectory Prediction
Creators: name: Qingze
name: Liu
name: Li, Danrui
name: Sohn, Samuel S.
name: Yoon, Sejong
name: Kapadia, Mubbasir
name: Pavlovic, Vladimir
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Accurate prediction of human or vehicle trajectories with good diversity that captures their stochastic nature is an essential task for many applications. However, many trajectory prediction models produce unreasonable trajectory samples that focus on improving diversity or accuracy while neglecting other key requirements, such as collision avoidance with the surrounding environment. In this work, we propose TrajDiffuse, a planning-based trajectory prediction method using a novel guided conditional diffusion model. We form the trajectory prediction problem as a denoising impaint task and design a map-based guidance term for the diffusion process. TrajDiffuse is able to generate trajectory predictions that match or exceed the accuracy and diversity of the SOTA, while adhering almost perfectly to environmental constraints. We demonstrate the utility of our model through experiments on the nuScenes and PFSD datasets and provide an extensive benchmark analysis against the SOTA methods.
description: Accepted to be published as inpreceedings of the 2024 International Conference on Pattern Recognition (ICPR)
An Algorithmic Perspective on Some Network Design, Construction and Analysis Problems
Creators: name: Andreica, Mugurel Ionut
name: Ungureanu, Mihai Aristotel
name: Andreica, Romulus
name: Andreica, Angela
Publisher: name: arXiv
Year: 2009
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: F.2.2; G.2.2; I.2.8

description: Efficient network design, construction and analysis are important topics, considering the highly dynamic environment in which data communication occurs nowadays. In this paper we address several problems concerning these topics from an algorithmic point of view.
description: Proceedings of the International Symposium on Sustainable Development in Conditions of Economic Instability, Satu Mare, 26-27 June, 2009
Convex co-compact actions of relatively hyperbolic groups
Creators: name: Islam, Mitul
name: Zimmer, Andrew
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geometric Topology (math.GT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A20, 20F67, 57N16, 58B20, 20H10

description: In this paper we consider discrete groups in ${\rm PGL}_d(\mathbb{R})$ acting convex co-compactly on a properly convex domain in real projective space. For such groups, we establish necessary and sufficient conditions for the group to be relatively hyperbolic in terms of the geometry of the convex domain. This answers a question of Danciger-Guéritaud-Kassel and is analogous to a result of Hruska-Kleiner for ${\rm CAT}(0)$ spaces.
description: Minor revisions, final version to appear in Geometry & Topology. 96 pages, 2 figures. Comments welcome
Which FLRW comoving 3-manifold is preferred observationally and theoretically?
Creators: name: Roukema, Boudewijn F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The lack of structure greater than 10 Gpc/h in Wilkinson Microwave Anisotropy Probe (WMAP) observations of the cosmic microwave background (CMB) favours compact Friedmann-Lemaitre-Robertson-Walker (FLRW) models of the Universe. The present best candidates based on observations are the Poincare dodecahedral space S^3/I^* and the 3-torus T^3. The residual gravity effect favours the Poincare space, while a measure space argument where the density parameter is a derived parameter favours flat spaces almost surely.
description: 3 pages, Twelfth Marcel Grossmann Meeting on General Relativity, ed. Thibault Damour, Robert T Jantzen, Remo Ruffini, Singapore: World Scientific
Aurorae, Clouds or Magnetic Spots? Disentangling drivers of variability in three early L-Dwarfs.
Creators: name: O'Toole, Cian
name: Vos, Johanna
name: Kao, Melodie
name: Pineda, Sebastian
name: Zhou, Yifan
Publisher: name: Zenodo
Year: 2024

description: Brown dwarfs provide unique insights into exometeorology - weather on extrasolar objects. They act as powerful analogs to directly imaged exoplanets, due to their similar position on colour-magnitude diagrams. They provide a wealth of information as to how both of these substellar populations form and evolve as they can be observed far easier than directly imaged exoplanets. This study investigates the spectroscopic variability of three early L-type brown dwarfs, 2M0036+18, 2M1721+33 and 2M1906+40, using a novel approach of simultaneous observations from HST/WFC3 at near-IR wavelengths and the VLA in the radio (4-12 GHz). Early L-Dwarfs are especially interesting as they are at the right temperature to allow a number of processes to occur that are not possible at other spectral types including any one of, or a combination of, aurorae, clouds and magnetic spots. This allows different insights into the atmospheric processes in giant extrasolar worlds. We use the HST data to distinguish between the various drivers of variability and potentially detect auroral activity in the near-IR for the first time. 2M0036+18 is a known auroral emitter in the radio, while 2M1721+33's variability is primarily due to condensate clouds. The final case however, 2M1906+40, has ambiguous behaviour. All three objects show significant variability in the HST observations and we aim to disentangle the drivers of variability in each object by analysing their unique signatures of variability.+
Spontaneous Parity Violation in a Supersymmetric Left-Right Symmetric Model
Creators: name: Patra, Sudhanwa
name: Sarkar, Anjishnu
name: Sarkar, Utpal
name: Yajnik, Urjit
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a novel implementation of spontaneous parity breaking in supersymmetric left-right symmetric model, avoiding some of the problems encountered in previous studies. This implementation includes a bitriplet and a singlet, in addition to the bidoublets which extend the Higgs sector of the Minimal Supersymmetric Standard Model (MSSM). The supersymmetric vacua of this theory are shown to lead generically to spontaneous violation of parity, while preserving R parity. The model is shown to reproduce the see-saw relation for vacuum expectation values, $v_L v_R \approx m_{EW}^2$ relating the new mass scales $v_L$, $v_R$ to the electroweak scale $m_{EW}$, just as in the non-supersymmetric version. The scale $v_R$ determines the mass scale of heavy majorana neutrinos, which gets related to the obeserved neutrino masses through type II see-saw relation.
description: 12 pages, revtex4