cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anharmonicity reveals the tunability of the charge density wave orders in monolayer VSe$_2$
Creators: name: Fumega, Adolfo O.
name: Diego, Josu
name: Pardo, V.
name: Blanco-Canosa, S.
name: Errea, Ion
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: VSe$_2$ is a layered compound that has attracted great attention due to its proximity to a ferromagnetic state that is quenched by the presence of a charge density wave (CDW) phase. In the monolayer limit, unrelated experiments have reported different CDW orders with transition temperatures in the range of 130 to 220 K, making this monolayer very controversial. Here we perform first-principles non-perturbative anharmonic phonon calculations in monolayer VSe$_2$ in order to estimate the CDW order and the corresponding transition temperature. Our analysis solves previous experimental contradictions as we reveal that monolayer VSe$_2$ develops two independent charge density wave orders associated to $\sqrt{3} \times \sqrt{7}$ and $4 \times 4$ modulations that compete as a function of strain. In fact, tiny variations of only 1.5% in the lattice parameter are enough to stabilize one order or the other, which underlines that the CDW order becomes substrate-dependent. The predicted CDW temperature is strain-dependent and has a value of around 220 K, in good agreement with experiments. Moreover, we analyze the impact of external Lennard-Jones interactions on the CDW. We show that these can act together with the anharmonicity to suppress the CDW orders. In the particular case of monolayer VSe$_2$, this may give rise to the emergence of a ferromagnetic order.
description: 8 pages, 4 figures, and supplemental material
title: "Basamento composto di frammenti eterogenei uniti: lastra con eroti reggenti una tabella; frammento a tema dionisiaco e scena di battaglia tra romani e barbari; due lastre a tema dionisiaco", arte romana, inv. CCXLVa (ITA/EN)
title: Scheda catalogo digitale Borghese
titleType: AlternativeTitle
Creators: name: Ciccarello, Giulia
name: Galleria Borghese
Publisher: name: Galleria Borghese
Year: 2024

description: Pubblicazione delle schede delle opere conservate nel museo ed estratte dal catalogo digitale di

Galleria Borghese, nelle due versioni esistenti online, in italiano e inglese.

Collegamento al catalogo digitale:

ITA: https://www.collezionegalleriaborghese.it/

EN: https://www.collezionegalleriaborghese.it/en
Tafeln
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2020

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 27 Nr. 6 (1974): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Effects on Amorphous Silicon Photovoltaic Performance from High-temperature Annealing Pulses in Photovoltaic Thermal Hybrid Devices
Creators: name: Pathak, M. J. M.
name: Pearce, J. M.
name: Harrison, S. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: There is a renewed interest in photovoltaic solar thermal (PVT) hybrid systems, which harvest solar energy for heat and electricity. Typically, a main focus of a PVT system is to cool the photovoltaic (PV) cells to improve the electrical performance, however, this causes the thermal component to under-perform compared to a solar thermal collector. The low temperature coefficients of amorphous silicon (a-Si:H) allow for the PV cells to be operated at higher temperatures and are a potential candidate for a more symbiotic PVT system. The fundamental challenge of a-Si:H PV is light-induced degradation known as the Staebler-Wronski effect (SWE). Fortunately, SWE is reversible and the a-Si:H PV efficiency can be returned to its initial state if the cell is annealed. Thus an opportunity exists to deposit a-Si:H directly on the solar thermal absorber plate where the cells could reach the high temperatures required for annealing. In this study, this opportunity is explored experimentally. First a-Si:H PV cells were annealed for 1 hour at 100\degreeC on a 12 hour cycle and for the remaining time the cells were degraded at 50\degreeC in order to simulate stagnation of a PVT system for 1 hour once a day. It was found that, when comparing the cells after stabilization at normal 50\degreeC degradation, this annealing sequence resulted in a 10.6% energy gain when compared to a cell that was only degraded at 50\degreeC.
Data Leakage and Evaluation Issues in Micro-Expression Analysis
Creators: name: Varanka, Tuomas
name: Li, Yante
name: Peng, Wei
name: Zhao, Guoying
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Micro-expressions have drawn increasing interest lately due to various potential applications. The task is, however, difficult as it incorporates many challenges from the fields of computer vision, machine learning and emotional sciences. Due to the spontaneous and subtle characteristics of micro-expressions, the available training and testing data are limited, which make evaluation complex. We show that data leakage and fragmented evaluation protocols are issues among the micro-expression literature. We find that fixing data leaks can drastically reduce model performance, in some cases even making the models perform similarly to a random classifier. To this end, we go through common pitfalls, propose a new standardized evaluation protocol using facial action units with over 2000 micro-expression samples, and provide an open source library that implements the evaluation protocols in a standardized manner. Code is publicly available in \url{https://github.com/tvaranka/meb}.
Supporting Information for New early Neoproterozoic paleomagnetic constraints of the northwestern China blocks on the periphery of Rodinia
Creators: name: Xu, Yan
Publisher: name: figshare
Year: 2022
Subjects: Geophysics not elsewhere classified

description: This supporting information contains 4 Figures showing whole-rock major and trace elements versus loss on ignition (Figure S1), detailed demagnetization behaviors of mafic dikes (Figure S2), and mean directions of the soft component isolated from dikes (Figure S3), and from host rocks (Figures S4); and 4 tables including baddeleyite SHRIMP U-Pb data (Table S1), alternating field demagnetization results (Table S2) and major and trace elements compositions (Table S3) from the mafic dikes, and the Euler rotation parameters for our paleogeographic reconstructions (Table S4).
Exploring dark photons via a subfrequency laser searchin gravitational wave detectors
Creators: name: Ismail, M. Afif
name: Nugroho, Chrisna Setyo
name: Wong, Henry Tsz-King
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a novel idea to detect a dark photon in gravitational wave experiments. Our setups are capable of performing the whole process of dark photon production, its decay products, and new physics signal discovery. This mini-LHC is inspired by the recent idea of dark photon detection using laser light in light shining through the wall (LSW) experiments such as ALPS II. Taking the subfrequency light emitted from the laser source as the new physics signal, we show that the sensitivity of our proposal is 2orders of magnitude better than the original idea in the LSW studies.
description: 5 figures, 1 table
The nature of the companion of PSR J1719-1438: a white dwarf or an exotic object?
Creators: name: Horvath, J. E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We rise in this Letter the possibility that the very dense, compact companion of PSR J1719-1438, having a Jupiter-like mass is an exotic quark object rather than a light helium or carbon white dwarf. The exotic hypothesis explains naturally some of the observed features, and gives quite strong predictions for this system, to be confirmed or refuted in future feasible studies.
description: 4 pp., no figures, to appear in Research in Astronomy and Astrophysics
Enhanced Sampling for Free Energy Profiles with Post-Transition-State Bifurcations
Creators: name: Nam, Juno
name: Jung, YounJoon
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a method to explore the free energy landscapes of chemical reactions with post-transition-state bifurcations using an enhanced sampling method based on well-tempered metadynamics. Obviating the need for computationally expensive DFT-level ab initio molecular dynamics simulations, we obtain accurate energetics by utilizing a free energy perturbation scheme and deep learning estimator for the single-point energies of substrate configurations. Using a pair of easily interpretable collective variables, we present a quantitative free energy surface that is compatible with harmonic transition state theory calculations and in which the bifurcations are clearly visible. We demonstrate our approach with the example of the SpnF-catalyzed Diels-Alder reaction, a cycloaddition reaction in which post-transition-state bifurcation leads to the [4+2] as well as the [6+4] cycloadduct. We obtain the free energy landscapes for different stereochemical reaction pathways and characterize the mechanistic continuum between relevant reaction channels without explicitly searching for the pertinent transition state structures.
description: 27 pages, 5 figures
Aachen – Karl der Große, Kunst und Kurioses
Creators: name: Gegenmantel, Antje
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2020

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 25 Nr. 1 (2019): AKMB-news
Identificational Integration of Second Generation Russians in Estonia
Creators: name: Nimmerfeldt, Gerli
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: second generation; integration; ethnic identity; national identity; Estonian Russian youth

description: This article takes a look at integration processes of second generation Russian youth in Estonia at identity level which is often referred to as identiﬁcational integration. The focus is set on two dimensions of the identiﬁcational integration: identiﬁcation with one’s own ethnic group and identiﬁcation with the majority group in host country. First the role and place of identity in theoretical approaches to integration processes is explored. The second task of the article is to demonstrate the shortcomings of widespread theories and commonly used research instruments for studying the identiﬁcational integration. For that purpose the hypotheses on identiﬁcational integration that stem from literature and presume that national level belongingness either replaces or replenishes ethnic identity are put on test. The analysis is based on both survey data and follow-up face-to-face interviews conducted with 18-35 year old Russians born in Estonia to parents of whom at least one have migrated to Estonia during Soviet times. Conducted analysis on ethnic identity of Russian youth and their sense of belonging to the majority group reveal a need for an enhanced approach to conceptualising and operationalising the identity level integration processes.
description: Studies of Transition States and Societies, Vol 1, No 1 (2009)
Ethnic Self-Esteem and Intergroup Attitudes Among the Estonian Majority and the non-Estonian Minority
Creators: name: Raudsepp, Maaris
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: intergroup attitudes; social identity; collective self-esteem; social representations.

description: The study was focused on the relationships between ethnic self-esteem and various indicators of intergroup attitudes in a representative sample of adult population of Estonia (N=1142). Attitudinal variables that discriminated most between persons with high and low ethnic self-esteem were identiﬁed. Among Estonians ethnic self-esteem was related to positive ingroup bias, readiness for outgroup contact, perceived threat from the outgroup, attitudes to non-Estonian minority, and attitudes toward minority integration. Among non-Estonians ethnic self-esteem was related to readiness for outgroup contact, ethnic sterotypes, and various attitudes towards minority integration. An attempt was made to reconstruct the system of intergroup attidues of prototypical persons with high and low ethnic self-esteem and to describe psychological implications of high and low ethnic self-esteem for members of majority and minority groups. Various theoretical models (social identity theory, integrated threat theory, social dominance theory) were used for interpretation of the results.
description: Studies of Transition States and Societies, Vol 1, No 1 (2009)
Supplementary document for Massively Multiplexed Wide-field Photon Correlation Sensing - 7388070.pdf
Creators: name: Elmalem, Shay
name: Lubin, Gur
name: Wayne, Michael
name: Bruschini, Claudio
name: Charbon, Edoardo
name: Oron, Dan
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplemental document
Beispiel Amsterdam – die Bibliothek des Stedelijk Museum: Informationszentrum gestern – heute – morgen
Creators: name: Nijhof, Michiel
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2020

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 25 Nr. 2 (2019): AKMB-news
Spectroscopic confirmation of z~7 LBGs: probing the earliest galaxies and the epoch of reionization
Creators: name: Pentericci, L.
name: Fontana, A.
name: Vanzella, E.
name: Castellano, M.
name: Grazian, A.
name: Dijkstra, M.
name: Boutsia, K.
name: Cristiani, S.
name: Dickinson, M.
name: Giallongo, E.
name: Giavalisco, M.
name: Maiolino, R.
name: Moorwood, A.
name: Santini, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the final results from our ultra-deep spectroscopic campaign with FORS2 at the ESO/VLT for the confirmation of z~7 "z--band dropout" candidates selected from our VLT/Hawk-I imaging survey over three independent fields. In particular we report on two newly discovered galaxies at redshift ~6.7 in the NTT deep field: both galaxies show a Ly-alpha emission line with rest-frame EWs of the order 15-20 A and luminosities of 2-4 X 10^{42} erg/s. We also present the results of ultra-deep observations of a sample of i-dropout galaxies, from which we set a solid upper limit on the fraction of interlopers. Out of the 20 z-dropouts observed we confirm 5 galaxies at 6.7 < z < 7.1. This is systematically below the expectations drawn on the basis of lower redshift observations: in particular there is a significant lack of objects with intermediate Ly-alpha EWs (between 20 and 55 A). We conclude that the trend for the fraction of Ly-alpha emission in LBGs that is constantly increasing from z~3 to z~6 is most probably reversed from z~6 to z~7. Explaining the observed rapid change in the LAE fraction among the drop-out population with reionization requires a fast evolution of the neutral fraction of hydrogen in the Universe. Assuming that the Universe is completely ionized at z=6 and adopting the semi-analytical models of Dijkstra et al. (2011), we find that our data require a change of the neutral hydrogen fraction of the order Delta chi_{HI} ~ 0.6 in a time Delta z ~ 1, provided that the escape fraction does not increase dramatically over the same redshift interval.
description: Submitted to ApJ
Die schwarze Madonna: ein Kriminalroman aus der Kunstszene Havannas
Creators: name: Held, Laura
Publisher: name: AKMB-news: Informationen zu Kunst, Museum und Bibliothek
Year: 2020

description: AKMB-news: Informationen zu Kunst, Museum und Bibliothek, Bd. 25 Nr. 2 (2019): AKMB-news
Finlay, Thames, Dufay, and Paget color screen process collections: Using digital registration of viewing screens to reveal original color
Creators: name: Barker, Geoffrey
name: Hubička, Jan
name: Jacobs, Mark
name: Kimrová, Linda
name: Meyer, Kendra
name: Peterson, Doug
Publisher: name: arXiv
Year: 2022
Subjects: subject: Graphics (cs.GR)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences
subject: I.4.1; I.4.5; I.4.8

description: We discuss digitization, subsequent digital analysis and processing of negatives (and diapositives) made by Finlay, Thames, Dufay, Paget, and similar additive color screen processes. These early color processes (introduced in the 1890s and popular until the 1950s) used a special color screen filter and a monochromatic negative. Due to poor stability of dyes used to produce color screens many of the photographs appear faded; others exist only in the form of (monochromatic) negatives. We discuss the possibility of digitally reconstructing the original color from scans of original negatives or by virtue of infrared imaging of original transparencies (which eliminates the physically coupled color filters) and digitally recreating the original color filter pattern using a new open-source software tool. Photographs taken using additive color screen processes are some of the very earliest color images of our shared cultural heritage. They depict people, places, and events for which there are no other surviving color images. We hope that our new software tool can bring these images back to life.
description: 8 figures, 9 pages; submitted to the proceedings of Colour Photography and Film: sharing knowledge of analysis, preservation, conservation, migration of analogue and digital materials
Jumping kinetic Monte Carlo: Fast and accurate simulations of partially delocalised charge transport in organic semiconductors
Creators: name: Willson, Jacob T.
name: Liu, William
name: Balzer, Daniel
name: Kassal, Ivan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Developing devices using disordered organic semiconductors requires accurate and practical models of charge transport. In these materials, charge transport occurs through partially delocalised states in an intermediate regime between localised hopping and delocalised band conduction. Partial delocalisation can increase mobilities by orders of magnitude over conventional hopping, making it important for materials and device design. Although delocalisation, disorder, and polaron formation can be described using delocalised kinetic Monte Carlo (dKMC), it is a computationally expensive method. Here, we develop jumping kinetic Monte Carlo (jKMC), a model that approaches the accuracy of dKMC with a computational cost comparable to conventional hopping. jKMC achieves its computational performance by modelling conduction using identical spherical polarons, yielding a simple delocalisation correction to the Marcus hopping rate that allows polarons to jump over their nearest neighbours. jKMC can be used in regimes of partial delocalisation inaccessible to dKMC to show that modest delocalisation can increase mobilities by as much as two orders of magnitude.
Half-quantum vortex state in a spin-orbit coupled Bose-Einstein condensate
Creators: name: Ramachandhran, B.
name: Opanchuk, Bogdan
name: Liu, Xia-Ji
name: Pu, Han
name: Drummond, Peter D.
name: Hu, Hui
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate theoretically the condensate state and collective excitations of a two-component Bose gas in two-dimensional harmonic traps subject to isotropic Rashba spin-orbit coupling. In the weakly interacting regime when the inter-species interaction is larger than the intra-species interaction ($g_{\uparrow\downarrow}>g$), we find that the condensate ground state has a half-quantum-angular-momentum vortex configuration with spatial rotational symmetry and skyrmion-type spin texture. Upon increasing the interatomic interaction beyond a threshold $g_{c}$, the ground state starts to involve higher-order angular momentum components and thus breaks the rotational symmetry. In the case of $g_{\uparrow\downarrow}g_{c}$ and $g_{\uparrow\downarrow}
description: 13 pages, 18 figures
Anomalous relaxation of density waves in a ring-exchange system
Creators: name: Patil, Pranay
name: Heyl, Markus
name: Alet, Fabien
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: We present the analysis of the slowing down exhibited by stochastic dynamics of a ring-exchange model on a square lattice, by means of numerical simulations. We find the preservation of coarse-grained memory of initial state of density-wave types for unexpectedly long times. This behavior is inconsistent with the prediction from a low frequency continuum theory developed by assuming a mean-field solution. Through a detailed analysis of correlation functions of the dynamically active regions, we exhibit an unconventional transient long ranged structure formation in a direction which is featureless for the initial condition, and argue that its slow melting plays a crucial role in the slowing-down mechanism. We expect our results to be relevant also for the dynamics of quantum ring-exchange dynamics of hard-core bosons and more generally for dipole moment conserving models
description: 15 pages, 14 figures, data for all figures available at https://zenodo.org/record/7417752#.ZDpocvIzY5l
The generalized solutions of the Lama's equations in the case of running loads. The shock waves
Creators: name: Alexeyeva, Lyudmila A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: MSQ 74B05, 35E05

description: The system of Lama's equations is investigated, describing the motion of the elastic media under subsonic, transonic and supersonic velocities of the moving source of distributions, and its decisions in space of generalized vector-functions. The questions are considered connected with arising shock waves, which appear in ambience under supersonic source of distributions. On base of the generalized functions theories the method of the determination of the conditions on gaps of the decisions and their derivatives on shock waves fronts is offered.
description: 10 pages
Perspectives of Local Government Amalgamations in a Transition Society: The Case of Estonia
Creators: name: Sootla, Georg
name: Kalev, Leif
name: Kattai, Kersten
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: local autonomy; amalgamations of municipalities; cooperation of municipalities; civil society; empowerment

description: This article analyses the general institutional preconditions and restraints of a successful local government amalgamation policy in Estonia from a Central and Eastern European perspective. We start by re-examining and re-synthesising the dynamics of capacity-scale problems during the post-communist transition. On this basis, we analyse the patterns and models of local governance and amalgamations in the sparsely populated countries with already large municipalities, developing the possibilities and barriers to achieve economy of scale and economy of scope. The article addresses key factors of local governance and amalgamations, first of all their relations vis-à-vis the citizens and the civil society. The vicious circle of a clan pattern of local government and citizen estrangement can be broken when the existing practice of municipality amalgamation will be changed. The mediating role of the central government or citizens’ peak organisations must become central in the amalgamation process, because they can neutralise the traditional corporatist values of local elites at negotiations and promote the new structural profile of a municipality based on the values of democratic governance.
description: Studies of Transition States and Societies, Vol 1, No 1 (2009)
CERN Accelerator Strategy
Creators: name: Myers, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The CERN strategy for future accelerator projects is outlined and the role of the HE-LHC inside this strategy is described.
description: 1 page, Contribution given to the EuCARD-AccNet-EuroLumi Workshop: The High-Energy Large Hadron Collider, Malta, Republic of Malta, 14 - 16 Oct 2010
Gender Segregated Labour Markets in the Baltics What are Prevailing – Similarities or Differences?
Creators: name: Vöörmann, Rein
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: gender, segregation; labour market; (in)equality; Baltic states

description: This paper focuses on men and women and the gender segregation of jobs in the Baltic countries. Based on the Estonian, Latvian and Lithuanian labour force survey data, a look is taken at the employment structure of men and women by industries and occupations, as well as at the question whether or not gender segregation in the labour market has been increased after the collapse of the communist systems in the region under consideration. Empirical data demonstrate that in respect to industrial gender segregation there is some increase in Estonia and Latvia, but not in Lithuania. Occupational gender segregation demonstrates more stability in all three Baltic States. Compared to the Western European countries, the main trend is towards bigger similarities.
description: Studies of Transition States and Societies, Vol 1, No 1 (2009)
Graviton in a Curved Space-Time Background and Gauge Symmetry
Creators: name: Red'kov, V. M.
name: Tokarevskaya, N. G.
name: Kisel, V. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: G.1
subject: 35

description: Pauli-Fierz approach to description of a massless spin-2 particle is investigated in the framework of 30-component first order relativistic wave equation theory on a curved space-time background. It is shown that additional gauge symmetry of massless equations established by Pauli-Fierz can be extended only to curved space-time regions where Ricci tensor vanishes. In all such space-time models the generally covariant S=2 massless wave equation exhibits gauge symmetry property, otherwise it is not so.
description: 9 pages
Zur Dokumentation archäologischer Sammlungen und Archivierung von Quellenmaterial am Museum für Vor- und Frühgeschichte
Creators: name: Junker, Horst
Publisher: name: Acta Praehistorica et Archaeologica
Year: 2020

description: Acta Praehistorica et Archaeologica, Bd. 36/37 2004/2005(2005)
Thermal first-order phase transitions, Ising critical points, and reentrance in the Ising-Heisenberg model on the diamond-decorated square lattice in a magnetic field
Creators: name: Strecka, Jozef
name: Karlova, Katarina
name: Verkholyak, Taras
name: Caci, Nils
name: Wessel, Stefan
name: Honecker, Andreas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The thermal phase transitions of a spin-1/2 Ising-Heisenberg model on the diamond-decorated square lattice in a magnetic field are investigated using a decoration-iteration transformation and classical Monte Carlo simulations. A generalized decoration-iteration transformation maps this model exactly onto an effective classical Ising model on the square lattice with temperature-dependent effective nearest-neighbor interactions and magnetic field strength. The effective field vanishes along a ground-state phase boundary of the original model, separating a ferrimagnetic and a quantum monomer-dimer phase. At finite temperatures this phase boundary gives rise to an exactly solvable surface of discontinuous (first-order) phase transitions, which terminates in a line of Ising critical points. The existence of discontinuous reentrant phase transitions within a narrow parameter regime is reported and explained in terms of the low-energy excitations from both phases. These exact results, obtained from the mapping to the zero-field effective Ising model are corroborated by classical Monte Carlo simulations of the effective model.
description: 17 pages, 15 figures
Immigrant-Established Resident Interactions in Miami, Florida
Creators: name: Stepick, Alex
name: Dutton Stepick, Carol
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: interethnic relations; Miami; international migration; contact hypothesis; Cubans; Haitians

description: This article examines factors that affect interethnic relations in Miami, Florida. The theoretical framework, based on the ‘contact hypothesis’ argues that better interethnic relations stem from not only contact, but also contact in which individuals from opposing groups share equal status and a stake in outcomes, and when contact activities require cooperation. The contact hypothesis, however, does not address the factors that produce inequality in social relations. To address these factors ideas from international migration research are used to argue that those with power must create structures in which other groups feel welcome rather than rejected and that leaders must emphasize similarities rather than differences among groups.
description: Studies of Transition States and Societies, Vol 1, No 1 (2009)
Book Review: Can Physics Save Social Sciences?
Creators: name: Tart, Indrek
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: predictive models; book review; social science

description: Making social sciences more scientific: the need for predictive models by Rein Taagepera, 2008, Oxford University Press, USA.
description: Studies of Transition States and Societies, Vol 1, No 1 (2009)
The Strategies of Inter-Ethnic Adaptation of Estonian Russians
Creators: name: Kruusvall, Jüri
name: Vetik, Raivo
name: Berry, John W.
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: inter-cultural relations; acculturation strategies; integration policy; Estonia; Russian-speakers

description: Based on the inter-cultural relations model of John Berry, four diﬀerent groups among Russian-speakers in Estonia were diﬀerentiated in the analysis of ‘Integration monitoring 2005’. The analysis reveals that both similarities and diﬀerences exist between the characteristics of these four groups and the groups in the typology of Berry (integration, assimilation, marginalisation, separation). The diﬀerences that emerged are related to the assimilation and integration strategies, which proved to be rather restrained for Russian-speakers in the current social and political context in Estonia. The analysis gives us ground to claim that the strong ethnic connotation of the current nation-state model in Estonia hinders ﬁnding a positive place in this country even for those Russian-speakers, who, in fact, would like to integrate.
description: Studies of Transition States and Societies, Vol 1, No 1 (2009)
The Composite Operator Method (COM)
Creators: name: Avella, Adolfo
name: Mancini, Ferdinando
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Composite Operator Method (COM) is formulated, its internals illustrated in detail and some of its most successful applications reported. COM endorses the emergence, in strongly correlated systems (SCS), of composite operators, optimally deals with their unusual features and implements algebra constraints, and other relevant symmetries, in order to properly compute the unconventional properties of SCS.
description: Strongly Correlated Systems: Theoretical Methods, Springer Series in Solid-State Sciences, Vol. 171 (2012) [ISBN 978-3-642-21830-9]
Citizenship Policies Between Nation-State Building and Globalisation: Attitudes of the Decision Makers in Estonia
Creators: name: Kalev, Leif
name: Ruutsoo, Rein
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: citizenship; multiple citizenship; nation-building; post-communism; Europeanisation

description: In the following article, we examine the positions of the decision makers of Estonia on multiple and European citizenship. The Estonian case ofers good opportunities to discuss the structuring of the feld of citizenship in the context of a country that is building up a European style nation-state but that has to simultaneously adjust to the changes in statehood usually characterised as globalisation and Europeanisation. The article is based on a survey conducted in 2003-2004 in eight countries: Estonia, Finland, France, Germany, Greece, Israel, Portugal and United Kingdom. We will frst briefy characterise the socio-historical context of Estonian citizenship policies, then discuss the results of the empirical research, relate these to wider trends and draw some conclusions.
description: Studies of Transition States and Societies, Vol 2, No 1 (2010)
Physical layer insecurity
Creators: name: Médard, Muriel
name: Duffy, Ken R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In the classic wiretap model, Alice wishes to reliably communicate to Bob without being overheard by Eve who is eavesdropping over a degraded channel. Systems for achieving that physical layer security often rely on an error correction code whose rate is below the Shannon capacity of Alice and Bob's channel, so Bob can reliably decode, but above Alice and Eve's, so Eve cannot reliably decode. For the finite block length regime, several metrics have been proposed to characterise information leakage. Here we assess a new metric, the success exponent, and demonstrate it can be operationalized through the use of Guessing Random Additive Noise Decoding (GRAND) to compromise the physical-layer security of any moderate length code. Success exponents are the natural beyond-capacity analogue of error exponents that characterise the probability that a maximum likelihood decoding is correct when the code-rate is above Shannon capacity, which is exponentially decaying in the code-length. Success exponents can be used to approximately evaluate the frequency with which Eve's decoding is correct in beyond-capacity channel conditions. Through the use of GRAND, we demonstrate that Eve can constrain her decoding procedure so that when she does identify a decoding, it is correct with high likelihood, significantly compromising Alice and Bob's communication by truthfully revealing a proportion of it. We provide general mathematical expressions for the determination of success exponents as well as for the evaluation of Eve's query number threshold, using the binary symmetric channel as a worked example. As GRAND algorithms are code-book agnostic and can decode any code structure, we provide empirical results for Random Linear Codes as exemplars. Simulation results demonstrate the practical possibility of compromising physical layer security.
Baudenkmale gefährdet - Baudenkmale gerettet
Creators: name: Hofrichter, Hartmut
name: Oelwein, Cornelia
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2020

description: -
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 53 Nr. 1 (2012): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Atomic and electronic structures of FeSe monolayer and bilayer thin films on SrTiO$_3$ (001): a first-principles study
Creators: name: Liu, Kai
name: LU, Zhong-Yi
name: Xiang, Tao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: By the first-principles electronic structure calculations, we have studied electronic structures of FeSe monolayer and bilayer thin films on SrTiO$_3$ (001) with SrO-termination or TiO$_2$ termination. We find that both FeSe monolayer and bilayer on either termination behave like a slightly doped semiconductor and a collinear antiferromagnetic order on Fe ions. There is no substantial charge transfer between the FeSe layers and the substrate. FeSe is adhered to the SrTiO$_3$ surface by a dipole-dipole interaction. The Fermi surface is mainly the contribution of Fe-3d orbitals. A valence band contributed mainly by the O-$2p$ orbitals in the TiO$_2$ layer is located slightly below the Fermi level, which can become conducting upon a small doping of holes.
description: 8 pages and 16 figures; updating some figures
title: "Statua di Venere, variante del tipo Landolina", arte romana, inv. CCXV (ITA/EN)
title: Scheda catalogo digitale Borghese
titleType: AlternativeTitle
Creators: name: Clementi, Jessica
name: Galleria Borghese
Publisher: name: Galleria Borghese
Year: 2024

description:  

Pubblicazione delle schede delle opere conservate nel museo ed estratte dal catalogo digitale di

Galleria Borghese, nelle due versioni esistenti online, in italiano e inglese.

Collegamento al catalogo digitale:

ITA: https://www.collezionegalleriaborghese.it/

EN: https://www.collezionegalleriaborghese.it/en
Democracy and Globality
Creators: name: Axtmann, Roland
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: globalisation; democratic governance; cosmopolitan democracy; democratisation

description: In this article, I consider the connection between globalisation and democracy with respect of (1) the historical ‘waves’ of democratisation and the (global) spread of ‘democratic’ system of political rule, and (2) the debate on a reformulation of democratic rule ‘in the age of globalisation’, and the concerns with global civil society, global governance and ‘cosmopolitan democracy’ in particular. Linking these two parts are considerations of the question as to whether a universal entitlement to democratic governance is emerging as a right in international law.
description: Studies of Transition States and Societies, Vol 2, No 1 (2010)
Informal Support Networks in a Changing Society – are FamilyBased Networks Being ‘Crowded out’?
Creators: name: Kutsar, Dagmar
name: Kasearu, Kairi
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: informal support networks; support exchange; social capital; welfare state

description: Using data from two nationally representative surveys (Estonian Living Conditions survey 1994, n=4,455; Estonian Social Survey 2004, n=8,906), we assess whether informal support networks have changed during the ten year period in Estonia. We hypothesize that during this period due to the establishment of a new welfare system and an overall increase in living standards, on one hand, and diversification of family forms and increased geographic mobility of the population on the other, family support networks have lost their functionality. Our findings show that informal support has decreased between relatives, while mutual helping activities with non-relatives – neighbours, colleagues and friends – have remained almost at the same level. We suggest that the developments in the Estonian society are ‘crowding out’ the instrumental support exchange in the kinship system and empowering social networking with nonrelatives.
description: Studies of Transition States and Societies, Vol 2, No 1 (2010)
Estimate of halo ellipticity as a function of radius with flexions
Creators: name: Er, Xinzhong
name: Mao, Shude
name: Xu, Dandan
name: Cao, Yixian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The cold dark matter theory predicts triaxial dark matter haloes. The radial distribution of halo ellipticity depends on baryonic processes and the nature of dark matter particles (collisionless or collisional). Here we show that we can use lensing flexion ratios to measure the halo ellipticity as a function of radius. We introduce a weight function and study the relationship between the first and second order statistics of flexion ratios, both of which can be used to reduce the bias in the estimate of ellipticity. we perform numerical tests for our method, and demonstrate that it can reduce the bias and determine the halo ellipticity as a function of radius. We also point out that the minimum mean flexion ratio can be used to trace the centres of galaxy clusters.
description: 9 pages,9 figures, MNRAS accepted
Unified model for the LISA measurements and instrument simulations
Creators: name: Bayle, Jean-Baptiste
name: Hartwig, Olaf
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: LISA is a space-based mHz gravitational-wave observatory, with a planned launch in 2034. It is expected to be the first detector of its kind, and will present unique challenges in instrumentation and data analysis. An accurate preflight simulation of LISA data is a vital part of the development of both the instrument and the analysis methods. The simulation must include a detailed model of the full measurement and analysis chain, capturing the main features that affect the instrument performance and processing algorithms. Here, we propose a new model that includes, for the first time, proper relativistic treatment of reference frames with realistic orbits; a model for onboard clocks and clock synchronization measurements; proper modeling of total laser frequencies, including laser locking, frequency planning and Doppler shifts; better treatment of onboard processing and updated noise models. We then introduce two implementations of this model, LISANode and LISA Instrument. We demonstrate that TDI processing successfully recovers gravitational-wave signals from the significantly more realistic and complex simulated data. LISANode and LISA Instrument are already widely used by the LISA community and, for example, currently provide the mock data for the LISA Data Challenges.
description: 29 pages, 16 figures, 4 tables
Nonequilibrium transport through a spinful quantum dot with superconducting leads
Creators: name: Andersen, B. M.
name: Flensberg, K.
name: Koerting, V.
name: Paaske, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study the nonlinear cotunneling current through a spinful quantum dot contacted by two superconducting leads. Applying a general nonequilibrium Green function formalism to an effective Kondo model, we study the rich variation in the IV-characteristics with varying asymmetry in the tunnel coupling to source and drain electrodes. The current is found to be carried respectively by multiple Andreev reflections in the symmetric limit, and by spin-induced Yu-Shiba-Russinov bound states in the strongly asymmetric limit. The interplay between these two mechanisms leads to qualitatively different IV-characteristics in the cross-over regime of intermediate symmetry, consistent with recent experimental observations of negative differential conductance and re-positioned conductance peaks in sub-gap cotunneling spectroscopy.
description: 5 pages, 3 figs
Conceptualising Adulthood in the Transition Society Context – The Case of Estonia
Creators: name: Nugin, Raili
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: transition to adulthood; adulthood conceptualization; emerging adulthood; Estonia; postcommunist cultural changes

description: The paper focuses on the conception of adulthood in post-communist Estonia, a society that has undergone vast structural, institutional and cultural changes. To this end, 179 essays written by high school graduates in five Estonian schools are analyzed.1 It is argued that the conceptualisation of adulthood is contextual and young people position and conceptualise themselves in the framework of these changes. Youth in Estonia, like their peers in Western Countries, stress intangible features (such as responsibility, mental maturity, social maturity, freedom) along with measurable transitions (employment, marriage, parenthood) when conceptualising adulthood. However, the meanings behind the concepts differ and are valued differently among respondents. This paper aims to provide a glance into what meanings are given to these perceptions. The most prevalent themes picked up by respondents were institutional transitions, responsibility and social maturity. Such prevalence is plausible, since these features in the transition to adulthood have changed the most in recent decades: the institutional context has changed and measurable transitions have prolonged; the level of individual responsibility in transitions has grown and the society has transformed.
description: Studies of Transition States and Societies, Vol 2, No 1 (2010)
Bilinear planar Hall effect in topological insulators due to spin-momentum locking inhomogeneity
Creators: name: Zarezad, A. N.
name: Barnaś, J.
name: Qaiumzadeh, A.
name: Dyrdał, A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the effect of spin-momentum locking inhomogeneity on the planar Hall effect in topological insulators (TIs). Using the minimal model describing surface states of 3D TIs and semiclassical Boltzmann formalism, we have derived the planar Hall conductivity within the generalized relaxation time approximation. We have found that the total planar Hall conductivity is a sum of linear and nonlinear to the external electric field components. The linear term is a conventional planar Hall conductivity which scales quadratically with an external magnetic field, whereas the nonlinear term reveals bilinear behaviour, i.e., changes its sign when either charge current density or in-plane magnetic field orientation is reversed. We have shown that the emergent nonlinear planar Hall effect is a consequence of spin-momentum locking inhomogeneity in the TIs with isotropic energy dispersion and dominates under the conventional planar Hall effect.
description: 5 pages, 1 figure