cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Post-Accession Crisis in the New Member States: Progressing or Backsliding in the EU?
Creators: name: Agh, Attila
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: post-accession crisis; effective membership; Europeanization of new member states; deepening and widening of the EU

description: The global crisis broke out ‘externally’ when the ‘internal’ institutional crisis in the EU reached its peak. In addition, the new member states were still in the post-accession crisis. These three types of ‘crises’ can be observed: first, a deep systemic crisis is ongoing in the global world; second, the creative crisis is the usual way of development in the EU; and finally third, the serious problems, disturbances, troubles in the new member states are transitory as the unavoidable contradiction of Europeanisation within the EU. Nonetheless, in the deepening-widening relationship, the new members are the main losers of the triple crisis, since the global financial crisis has broken out when they have been in their most vulnerable situation, so it deteriorates significantly their efforts to catch up and reach ‘effective membership’.Two alternative scenarios can be outlined: (1) the ‘post-communist track’ and (2) the ‘completing the membership’ scenario. The first scenario has been based on the ‘Prague-Vladivostok doctrine’, which presupposes that these ‘post-communist countries’ are basically of the same nature from Prague to Vladivostok and due to the burden of history they are doomed to fail in the process of catching up in the EU. The completing the membership scenario has been based on the Europeanisation process, which indicates that the new member states can reach effective membership by 2015. All in all, a new kind of controversial progress has begun, since the global economic and social crisis with new dangers and new opportunities has accelerated the necessary domestic reforms in the new member states.
description: Studies of Transition States and Societies, Vol 2, No 1 (2010)
In Search of a Polish Interest Representation Pattern in the European Union – The Case of Sector Interest Organisations
Creators: name: Kurczewska, Ursula
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: lobbying; interest groups; European Union

description: It may be expected that along with Poland’s accession to the EU, domestic sector interest organisations, to a larger extent than hitherto, will also be lobbying at the EU level, by using various ‘channels of access’. This article has two objectives: first, it is aimed at reconstructing the pattern of interest representation of Polish third sector organisations at the EU level; second, it analyses whether and how the isolated scheme fits into a pluralistic economic interest intermediation system in the EU. The analysis of individual cases reveals the advantage of a non-corporation related model in the representation of Polish interest groups, with the government occupying a dominant role, which may not be in line with the pluralistic and network-dependent character of the system at the EU level.
description: Studies of Transition States and Societies, Vol 2, No 2 (2010)
Is negative-weight percolation compatible with SLE?
Creators: name: Norrenbrock, C.
name: Melchert, O.
name: Hartmann, A. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study numerically the geometrical properties of minimally weighted paths that appear in the negative-weight percolation (NWP) model on two-dimensional lattices assuming a combination of periodic and free boundary conditions (BCs). Each realization of the disorder consists of a random fraction 1-rho of bonds with unit strength and a fraction rho of bond strengths drawn from a Gaussian distribution with zero mean and unit width. For each such sample, the path is forced to span the lattice along the direction with the free BCs. The path and a set of negatively weighted loops form a ground state (GS). A ground state on such a lattice can be determined performing a non-trivial transformation of the original graph and applying sophisticated matching algorithms. Here we examine whether the geometrical properties of the paths are in accordance with predictions of Schramm-Loewner evolution (SLE). Measuring the fractal dimension and reviewing Schramm's left passage formula indicates that the paths cannot be described in terms of SLE.
description: 9 pages, 8 figures, paper summary available at http://papercore.org/Norrenbrock2012
Coming to Terms with the Communist Past in Romania: An Analysis of the Political and Media Discourse Concerning the Tismăneanu Report
Creators: name: Hogea, Alina
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: collective memory; communism; Romania; politics; media discourse

description: This paper looks at the public debates about the communist past, as triggered by the final report on the communist dictatorship in Romania (the Tismăneanu report) and its presidential endorsement in December 2006. The paper employs narrative and discourse analysis to examine the political reactions to the official condemnation of communism, as well as its reflection in several Romanian newspapers. The Tismăneanu report was meant to be a ‘redressive ritual’ that would provide closure to a traumatic past by retrospectively denouncing the meaning of communism, but instead it generated more public debates and political turmoil. This indicates that the contorted path taken by Romania to confront its communist past is not a finished process yet, but rather represents a dynamic field in which social actors are fighting over which events and actors in the past should be collectively remembered, and especially how they have to be represented in the collective memory of post-communist Romania.
description: Studies of Transition States and Societies, Vol 2, No 2 (2010)
A Representation of Binary Matrices
Creators: name: Kostadinova, Hristina
name: Yordzhev, Krasimir
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Software (cs.MS)
subject: FOS: Computer and information sciences
subject: 68N15, 68W40, 15B34

description: In this article we discuss the presentation of a random binary matrix using sequence of whole nonnegative numbers. We examine some advantages and disadvantages of this presentation as an alternative of the standard presentation using two-dimensional array. It is shown that the presentation of binary matrices using ordered n-tuples of natural numbers makes the algorithms faster and saves a lot of memory. In this work we use object-oriented programming using the syntax and the semantic of C++ programming language.
description: Proceedings of the Thirty Ninth Spring Conference of the Union of Bulgarian Mathematicians, Albena, April 6-10, 2010
Contemporary Welfare Regimes in Baltic States: Adapting Post-Communist Conditions to Post-Modern Challenges
Creators: name: Toots, Anu
name: Bachmann, Janika
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: welfare state; Baltic States; employment patterns; family policy; post-modernity

description: This article revises the conventional approach to welfare state development in the post-communist world, according to which the main challenge for the Eastern European states is to catch up with Western European welfare regimes. The article argues that adjustment to the new social risks and volatile markets is more important today than the catching-up scenario. Based on social and labour market statistics for Estonia, Latvia and Lithuania, the article analyses how the Baltic States are coping with this adjustment challenge. Adaptation to the post-modern conditions can be regarded as successful if the stability of welfare spending is accompanied by the expanding and flexible employment and by the stable or decreasing level of poverty. The findings suggest that the opportunities to increase the flexibility and equality of the labour market provided by the breakdown of the communist regime were not used. Instead, the Baltic welfare states continue to focus on protecting against the old social risks by combining neoliberal and post-communist principles. Poor performance in meeting new social risks poses a greater challenge for the post-communist welfare states than their lag in terms of gross welfare expenditure.
description: Studies of Transition States and Societies, Vol 2, No 2 (2010)
The Dark Magnetism of the Universe
Creators: name: Jimenez, Jose Beltran
name: Maroto, Antonio L.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Despite the success of Maxwell's electromagnetism in the description of the electromagnetic interactions on small scales, we know very little about the behaviour of electromagnetic fields on cosmological distances. Thus, it has been suggested recently that the problems of dark energy and the origin of cosmic magnetic fields could be pointing to a modification of Maxwell's theory on large scales. Here, we review such a proposal in which the scalar state which is usually eliminated be means of the Lorenz condition is allowed to propagate. On super-Hubble scales, the new mode is essentially given by the temporal component of the electromagnetic potential and contributes as an effective cosmological constant to the energy-momentum tensor. The new state can be generated from quantum fluctuations during inflation and it is shown that the predicted value for the cosmological constant agrees with observations provided inflation took place at the electroweak scale. We also consider more general theories including non-minimal couplings to the space-time curvature in the presence of the temporal electromagnetic background. We show that both in the minimal and non-minimal cases, the modified Maxwell's equations include new effective current terms which can generate magnetic fields from sub-galactic scales up to the present Hubble horizon. The corresponding amplitudes could be enough to seed a galactic dynamo or even to account for observations just by collapse and differential rotation in the protogalactic cloud.
description: Invited brief review to appear in Modern Physics Letters A
Change and Continuity: Adaption of Persons Working in the Secondary Sector During the Period of Socio-Economic Reforms in the 1990s in Estonia
Creators: name: Kazjulja, Margarita
name: Saar, Ellu
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: personal destinies; adaptation; post-socialist structural changes; secondary sector

description: The aim of this paper is to analyse the interrelationship between the structural changes and personal destinies of people who worked in the secondary sector at the beginning of the transition period. The focal question is whether structural and institutional changes were brought about by a minimum of adaptations and fluctuations or a by maximum of turbulence and mobility. The paper is based on indepth interviews conducted in 2003 and 2004 with people who graduated from secondary educational institutions in 1983 and belong to the so-called ‘winners’ cohort. One of the pivotal results of the analysis is that when companies were winding down and being reorganised, it launched processes of intercompany workers’ displacement and lead to their imminent unemployment. Individuals changed their plans and behaviour because they had to adapt. Opportunities proved to be less a matter of individual control and planning, than of unfavourable structural conditions. A work place in the secondary sector often worked as a ‘push’ factor for mobility during the reforms, as massive layoffs and restructuring in the economy did not leave any other choices for people than to start looking for new possibilities. In spite of some attempts to set up businesses, the majority of former industrial workers belong to the same occupational group and are working in the same sector, even 15 years after the reforms. This means that the relative occupational ranking of the workers remained the same despite the change in the political and social order.
description: Studies of Transition States and Societies, Vol 2, No 2 (2010)
Post-Soviet Transitions of the Planned Socialist Towns: Visaginas, Lithuania
Creators: name: Baločkaitė, Rasa
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: Visaginas; Sniečkus; planned socialist towns; mono industry towns; new socialist towns; post-Soviet; transition

description: Visaginas, formerly Sniečkus, (Lithuania) was built as a planned socialist town and a satellite settlement to the Ignalina Nuclear Power Plant. Both the plant and the town were established in order to integrate Lithuania into the All-Union economic structures via the energy supply system,. The specific characteristics of the town were a particular mono industry, high living standards, ethnic composition (mostly Russian speaking migrants, Lithuanians as minority), absence of any history prior to 1973 and strong pro-Soviet attitudes. For years, it was a success story and the vanguard site of the socialism. After the declaration of Lithuanian Independency in 1990, the town became the site of tensions and uncertainties. The aim of this research study is to illuminate how post-Soviet transition has been experienced by this particular type of community shaped by socialism. Community experiences are retrospectively reconstructed via content analysis of the local media. The particular characteristics of the town (ethnic composition, employment structure, etc.) made the process of transition extremely complicated. While other planned socialist towns established new identities and new trajectories of development, in the case of Visaginas, not the future, but the past played a crucial role in shaping the town’s identity
description: Studies of Transition States and Societies, Vol 2, No 2 (2010)
Youth Work in Tallinn: the Positive Impact on Young People
Creators: name: Taru, Marti
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: youth; effects of youth work; integration

description: The article looks into youth work participation in Tallinn, the capital of Estonia. While the focus is on describing the link between participation in different activities and some characteristics of youth development, the article also describes youth work in Tallinn. The article looks at the link between participation in five distinct youth work activities (youth centres, hobby education, youth projects, youth organisations, counseling) and three outcome variables: labor market orientation, multiculturalism and youth voting. The empirical analysis is based on a database of 1061 elementary and secondary school pupils that was collected in Tallinn in spring 2010. Analysis results indicate a positive relationship between youth work participation and levels of the outcome variables. Thought not all regression coefficients were statistically significant, they consistently pointed in the same direction. The findings are interpreted as supporting the hypothesis that youth work participation does have a positive influence on youth development.
description: Studies of Transition States and Societies, Vol 2, No 2 (2010)
On the Picard number of singular Fano varieties
Creators: name: Della Noce, Gloria
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Let X be a Q-factorial Gorenstein Fano variety. Suppose that the singularities of X are canonical and that the locus where they are non-terminal has dimension zero. Let D be a prime divisor of X. We show that rho_X - rho_D < 9 (where rho is the Picard number). Moreover, if rho_X - rho_D > 3, there exists a finite morphism from X to S x Y, where S is a surface with rho_S at most 9. As an application we prove that, if X has dimension 3, then rho_X is at most 10.
description: arXiv admin note: text overlap with arXiv:0905.3239
Muscle fat content correlates with postoperative survival of viral-related cirrhosis patients after the TIPS: a retrospective study
Creators: name: Li, Sai
name: Li, Yong
name: Zhou, Chunhui
name: Li, Haiping
name: Zhao, Yazhuo
name: Yi, Xiaoping
name: Chen, Changyong
name: Peng, Changli
name: Wang, Tianming
name: Liu, Fei
name: Xiao, Juxiong
name: Shi, Liangrong
Publisher: name: Taylor & Francis
Year: 2025
Subjects: Medicine
Cell Biology
Biotechnology
Biological Sciences not elsewhere classified
Cancer
Science Policy
Cardiology

description: Early prediction of the prognosis of viral-related cirrhosis patients after transjugular intrahepatic portosystemic shunt (TIPS) is beneficial for clinical decision-making. The aim of this study is to explore a comprehensive prognostic assessment model for evaluating the survival outcomes of patients post-TIPS. A total of 155 patients treated with TIPS were included in the study. The data were collected from electronic records. The nutritional status of the patient is evaluated using imaging examinations measuring by the axial CT images from the L3 vertebral level. The primary endpoint was set as death within 1 year after TIPS. Multivariate Cox regression was performed to determine the factors associated with mortality. The Cox regression analysis revealed that the lower PMFI was associated with a lower risk of all-cause mortality after TIPS (hazard ratio [HR] 1.159, 95% confidence interval [CI] 1.063–1.263, p = 0.001). Furthermore, subgroup analyses according to gender revealed the PMFI was associated with postoperative death both in male (HR 2.125, 95% CI, 1.147–3.936, p = 0.017) and female patients (HR 1.070, 95% CI, 1.001–1.144, p = 0.047). The area under the curve (AUC) for predicting death within 1 year was 0.807. The clinical impact curve analysis showed that PMFI had higher levels of risk threshold probability and a smaller gap between actual and predicted curves. In viral-related cirrhosis patients with portal hypertension, increased muscle fat content might be a potential prognostic marker and associated with postoperative death after TIPS. Early prediction of post-TIPS patient survival is currently a clinical challenge.The absolute muscle fat content is correlated with post-TIPS survival time.The muscle fat infiltration can be used as a new evaluation method. The absolute muscle fat content is correlated with post-TIPS survival time. The muscle fat infiltration can be used as a new evaluation method.
Book Review: Rebuilding Leviathan: Party Competition and State Exploitation in Post-Communist Democracies by Anna Grzymala Busse, 2007, Cambridge: Cambridge University Press
Creators: name: Vukovic, Ivan
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: book review; post-communist democracies; party competition

description: Rebuilding Leviathan: Party Competition and State Exploitation in Post-Communist Democracies by Anna Grzymala Busse, 2007, Cambridge: Cambridge University Press
description: Studies of Transition States and Societies, Vol 2, No 2 (2010)
The Solar neighbourhood in angle coordinates: the Hyades moving group
Creators: name: McMillan, Paul J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: I investigate the suggestion that the Hyades moving group in the Solar neighbourhood is the result of a recent inner Lindblad resonance. I use dynamical "torus" models of the Galaxy to understand the expected distribution of solar neighbourhood stars in angle coordinates for phase-mixed models and models which include a resonant component. I show that attempts to find the signatures of resonances in angle coordinates are strongly influenced by selection effects, including rather subtle effects associated with the relationship between action and angle for stars at a given point. These effects mean that one can not use simple tests to determine whether substructures seen in the Solar neighbourhood are associated with any given resonance.
description: 11 pages, 12 figures, MNRAS submitted
The Evolution of a Double Diffusive Magnetic Buoyancy Instability
Creators: name: Silvers, Lara J.
name: Vasil, Geoffrey M.
name: Brummell, Nicholas H.
name: Proctor, Michael R. E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Recently, Silvers, Vasil, Brummell, & Proctor (2009), using numerical simulations, confirmed the existence of a double diffusive magnetic buoyancy instability of a layer of horizontal magnetic field produced by the interaction of a shear velocity field with a weak vertical field. Here, we demonstrate the longer term nonlinear evolution of such an instability in the simulations. We find that a quasi two-dimensional interchange instability rides (or "surfs") on the growing shear-induced background downstream field gradients. The region of activity expands since three-dimensional perturbations remain unstable in the wake of this upward-moving activity front, and so the three-dimensional nature becomes more noticeable with time.
description: 9 pages; 3 figures; accepted to appear in IAU symposium 271
Parametric Resonances in Axionic Cosmic Strings
Creators: name: Blanco-Pillado, Jose J.
name: Jiménez-Aguilar, Daniel
name: Queiruga, Jose M.
name: Urrestilla, Jon
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this letter we uncover a new parametric resonance of axionic cosmic strings. This process is triggered by the presence on the string of internal mode excitations that resonantly amplify the amplitude of transverse displacements of the string. We study this process by running numerical simulations that demonstrate the existence of this phenomenon in a $(3+1)$ dimensional lattice field theory and compare the results with the analytic expectations for the effective Lagrangian of the amplitude of these modes and their interactions. Finally, we also analyze the massless and massive radiation produced by these excited strings and comment on its relevance for the interpretation of the results of current numerical simulations of axionic cosmic string networks.
description: 13 pages + appendices, 5 figures. Published version
Constitutional Conﬂicts between Politics and Law in Transition Societies: A Systems-Theoretical Approach
Creators: name: Hein, Michael
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: constitutional conﬂicts; democratisation; transition; systems theory; Central and Eastern Europe

description: Post-autocratic transitions are often followed by constitutional conﬂ icts between state powers. With respect to the question of rule of law in young democracies, clashes between the executive and legislative branches, on the one hand, and the judiciary and constitutional courts, on the other, as well as those between ordinary and constitutional courts are particularly virulent. All these conﬂ icts have massively aﬀ ected the key distinction between politics and law that had been mainly violated in the previous autocratic regimes. Based on Niklas Luhmann’s theory, this article presents a systems-theoretical approach in order to explain the occurrence of these constitutional conﬂ icts. The central argument reads as follows: constitutional conﬂ icts between politics and law will occur under two circumstances—if a constitutional order allows the decision of legal questions based on political criteria or vice versa, and if a constitutional order allows the judiciary or the constitutional court to decide political questions based on political criteria. This argument is further substantiated by means of two exploratory case studies with a special emphasis on post-socialist transitions in Central and Eastern Europe. The main results are eight detailed hypotheses on the question of when, in constitutional orders, and under what circumstances are constitutional conﬂicts to be expected.
description: Studies of Transition States and Societies, Vol 3, No 1 (2011)
Slow Steps Towards Dual Earner/Dual Carer Family Model: Why Fathers do not Take Parental Leave
Creators: name: Karu, Marre
name: Kasearu, Kairi
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: family policy; parental leave; fathers; gender equality

description: The article looks at the transition of Estonian society towards dual earner/dual carer family model and focuses on fathers’ decision regarding taking their parental leave. Based on theory of planned behaviour by Ajzen, data from 20 qualitative interviews with fathers of small children are analysed to explore the beliefs fathers have when it comes to parental leave. The analysis distinguishes between two images of ‘good parenting’ that play a role in the fathers’ intention to take parental leave. First, there is an image of an outcome-oriented ‘project manager’ aﬀ ected by failure anxiety, and second, there is a much more relaxed image of a ‘good parent’ as a ‘companion’ who values everyday contact and a close relationship with the child(ren).
description: Studies of Transition States and Societies, Vol 3, No 1 (2011)
Field operators in topological quantum theories
Creators: name: Guadagnini, Enore
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The perturbative approach to the topological quantum field theories of the Chern-Simons type formulated in R^3 is considered. By means of the canonical quantization of the euclidean Chern-Simons lagrangian in the Landau gauge, a Fock space representation of the free field operators is produced. The perturbative equivalence of the path-integral formalism and the field operator approach is exhibited. The expression of the one-loop effective action in background gauge is derived.
description: 16 pages
Hydrodynamics of dipole-conserving fluids
Creators: name: Głódkowski, Aleksander
name: Peña-Benítez, Francisco
name: Surówka, Piotr
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Dipole-conserving fluids serve as examples of kinematically constrained systems that can be understood on the basis of symmetry. They are known to display various exotic features including glassylike dynamics, subdiffusive transport, and immobile excitations dubbed fractons. Unfortunately, such systems have so far escaped a complete macroscopic formulation as viscous fluids. In this work, we construct a consistent hydrodynamic description for fluids invariant under translation, rotation, and dipole shift symmetry. We use symmetry principles to formulate a thermodynamic theory for dipole-conserving systems at equilibrium and apply irreversible thermodynamics in order to elucidate dissipative effects. Remarkably, we find that the inclusion of the energy conservation not only renders the longitudinal modes diffusive rather than subdiffusive but also diffusion is present even at the lowest order in the derivative expansion. This work paves the way towards an effective description of many-body systems with constrained dynamics such as ensembles of topological defects, fracton phases of matter, and certain models of glasses.
description: 8 + 4 pages; 1 figure. v2: published version with minor revisions
Material Deprivation, Social Class and Life Course in the Balkans, Eastern Europe and Central Asia
Creators: name: Gugushvili, Alexi
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: deprivation; Eastern Europe; social class; life course

description: This paper employs the factor analysis technique and data from the UNDP/UNICEF Social Inclusion Survey to construct a material deprivation index for ﬁ ve transitional societies in the Balkans (FYR Macedonia and Serbia), Eastern Europe (Moldova and Ukraine) and Central Asia (Kazakhstan). The distribution of deprivation between these societies can be largely explained by their level of economic development, but within-county variance is not limited to monetary dimension. Controlling for settlement type, human capital and employment status in multivariate settings, the paper tests the hypothesis of the continuous importance of occupational social class and the emerging role of diﬀ erent life phases in individuals’ welfare outcomes. The results reveal that all speciﬁ ed social classes and most of the deﬁ ned life phases have diverse and statistically signiﬁ cant eﬀ ects on the constructed deprivation index and the likelihood of being under 70 per cent of the median deprivation threshold. Belonging to non-skilled manual, farmers and skilled manual social class as well as being a child or lone parent were revealed to have the highest risk of material deprivation. These ﬁ ndings are in line with the conclusions made for the Western welfare democracies on the complementary nature of social class and life course dimensions in explaining social hardship.
description: Studies of Transition States and Societies, Vol 3, No 1 (2011)
title: "Statua di peplofora", arte romana, inv. CCXVI (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
Metastability and quantum coherence-assisted sensing in interacting parallel quantum dots
Creators: name: Matern, Stephanie
name: Macieszczak, Katarzyna
name: Wozny, Simon
name: Leijnse, Martin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the transient dynamics subject to quantum coherence effects of two interacting parallel quantum dots weakly coupled to macroscopic leads. The stationary particle current of this quantum system is sensitive to perturbations much smaller than any other energy scale, specifically compared to the system-lead coupling and the temperature. We show that this is due to the presence of a parity-like symmetry in the dynamics, as a consequence of which, two distinct stationary states arise. In the presence of small perturbations breaking this symmetry, the system exhibits metastability with two metastable phases that can be approximated by a combination of states corresponding to stationary states in the unperturbed limit. Furthermore, the long-time dynamics can be described as classical dynamics between those phases, leading to a unique stationary state. In particular, the competition of those two metastable phases explains the sensitive behavior of the stationary current towards small perturbations. We show that this behavior bears the potential of utilizing the parallel dots as a charge sensor which makes use of quantum coherence effects to achieve a signal to noise ratio that is not limited by the temperature. As a consequence, the parallel dots outperform an analogous single-dot charge sensor for a wide range of temperatures.
description: 10 + 10 pages, 4 + 2 figures, close to published version
Structural Components of Lifestyle and Beyond: The Case of Hungary
Creators: name: Keller, Tamás
name: Róbert, Péter
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: personal destinies; adaptation; post-socialist structural changes; secondary sector

description: This paper deals with the question of when and how lifestyle and its components are important in social stratiﬁ cation. There is considerable consensus among scholars about the structure of the society being a consequence of hierarchical dimensions like occupation, income, or wealth. Some thirty years ago, largely based on Bourdieu’s “Distinction”, a new paradigm emerged highlighting the lifestyle components and the value-oriented cultural and material consumption in stratiﬁ cation. The idea reﬂ ects the empirical ﬁ nding that inequality between social classes has largely decreased, giving priority to horizontal lifestyle diﬀ erentiation instead of vertical inequality dimensions. From a theoretical viewpoint, a challenge in the approach is ﬁ nding out to what extent lifestyle typology is of a non-vertical character in reality. This social determination of lifestyle is investigated for Hungary when comparing an occupation-based typology with a consumption-based one. On the one hand, results reveal that the eﬀ ects of structural components on social status are stronger than those of lifestyle. On the other hand, lifestyle turns out to be less independent of social position and the top and bottom levels of the lifestyle typology are particularly predictable by structural measures.
description: Studies of Transition States and Societies, Vol 3, No 1 (2011)
The Relationship between Integration Dimensions among Second Generation Russians in Estonia
Creators: name: Nimmerfeldt, Gerli
name: Schulze, Jennie
name: Taru, Marti
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: integration; second generation; Estonian-Russians; linear assimilation theory

description: This article examines the relationship between structural, cultural, social and identiﬁ cational integration dimensions among second generation Russians in Estonia on the basis of TIES data. The relationship between structural integration and other dimensions is established through cluster analysis, which involves the analysis of the diﬀ erence between means across clusters. In addition, a bivariate correlation analysis is used to determine the relationship between cultural, social, and identiﬁ cational dimensions. The results raise questions regarding the pertinence of linear assimilation theory in the Estonian case. While the cluster analysis reveals a positive relationship between structural and cultural integration, higher levels of social and identiﬁ cational integration are not correlated with higher levels of structural and cultural integration. Second generation Russians retain a strong ethnic identity and socialise primarily with other Russians. A bivariate correlation analysis reveals that there is a relationship between cultural, social and identity-related dimensions. Feelings of belonging to Estonia and distance from both Russia and Russians in Russia are stronger among those with good Estonian language proﬁ ciency. Respondents with strong Estonian language skills also tend to be more socially integrated and to have more Estonian friends.
description: Studies of Transition States and Societies, Vol 3, No 1 (2011)
Redundancy Calibration of Phased Array Stations
Creators: name: Noorishad, Parisa
name: Wijnholds, Stefan J.
name: van Ardenne, Arnold
name: van der Hulst, Thijs
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Our aim is to assess the benefits and limitations of using the redundant visibility information in regular phased array systems for improving the calibration. Regular arrays offer the possibility to use redundant visibility information to constrain the calibration of the array independent of a sky model and a beam models of the station elements. It requires a regular arrangement in the configuration of array elements and identical beam patterns. We revised a calibration method for phased array stations using the redundant visibility information in the system and applied it successfully to a LOFAR station. The performance and limitations of the method were demonstrated by comparing its use on real and simulated data. The main limitation is the mutual coupling between the station elements, which leads to non-identical beams and stronger baseline dependent noise. Comparing the variance of the estimated complex gains with the Cramer-Rao Bound (CRB) indicates that redundancy is a stable and optimum method for calibrating the complex gains of the system. Our study shows that the use of the redundant visibility does improve the quality of the calibration in phased array systems. In addition it provides a powerful tool for system diagnostics. Our results demonstrate that designing redundancy in both the station layout and the array configuration of future aperture arrays is strongly recommended. In particular in the case of the Square Kilometre Array with its dynamic range requirement which surpasses any existing array by an order of magnitude.
description: 16 pages, 15 figures, accepted for publication in the A&A in Section 13, acceptance date: 1st May 2012. NOTE: Please contact the first author for high resolution figures
Certification of non-classicality in all links of a photonic star network without assuming quantum mechanics
Creators: name: Wang, Ning-Ning
name: Pozas-Kerstjens, Alejandro
name: Zhang, Chao
name: Liu, Bi-Heng
name: Huang, Yun-Feng
name: Li, Chuan-Feng
name: Guo, Guang-Can
name: Gisin, Nicolas
name: Tavakoli, Armin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Networks composed of independent sources of entangled particles that connect distant users are a rapidly developing quantum technology and an increasingly promising test-bed for fundamental physics. Here we address the certification of their post-classical properties through demonstrations of full network nonlocality. Full network nonlocality goes beyond standard nonlocality in networks by falsifying any model in which at least one source is classical, even if all the other sources are limited only by the no-signaling principle. We report on the observation of full network nonlocality in a star-shaped network featuring three independent sources of photonic qubits and joint three-qubit entanglement-swapping measurements. Our results constitute the first experimental demonstration of full network nonlocality beyond the bilocal network.
description: 15+10+6 pages (main + materials + supplementary), 3+4+1 figures. The computational appendix is available at https://www.github.com/apozas/three-star-fnn
Book Review: Post-Communism and Post-Democracy
Creators: name: Kalev, Leif
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: book review; post-communism;post-democracy

description: Post Democracy by Colin Crouch, 2004, London: Polity Press.
description: Studies of Transition States and Societies, Vol 3, No 1 (2011)
Efficient aggregation of face embeddings for decentralized face recognition deployments (extended version)
Creators: name: Hofer, Philipp
name: Roland, Michael
name: Schwarz, Philipp
name: Mayrhofer, René
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Biometrics are one of the most privacy-sensitive data. Ubiquitous authentication systems with a focus on privacy favor decentralized approaches as they reduce potential attack vectors, both on a technical and organizational level. The gold standard is to let the user be in control of where their own data is stored, which consequently leads to a high variety of devices used. Moreover, in comparison with a centralized system, designs with higher end-user freedom often incur additional network overhead. Therefore, when using face recognition for biometric authentication, an efficient way to compare faces is important in practical deployments, because it reduces both network and hardware requirements that are essential to encourage device diversity. This paper proposes an efficient way to aggregate embeddings used for face recognition based on an extensive analysis on different datasets and the use of different aggregation strategies. As part of this analysis, a new dataset has been collected, which is available for research purposes. Our proposed method supports the construction of massively scalable, decentralized face recognition systems with a focus on both privacy and long-term usability.
Sulfide-modified magnetic titanium dioxide microparticles for the adsorption and solid-phase extraction of toxic metals in aqueous samples
Creators: name: Diriba, Fituma
name: Amde, Meseret
name: Teju, Endale
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: In this work, sulfide-modified magnetic titanium dioxide microparticles (magnetic TiO2-µPs@S) were synthesized and studied for adsorption-based removal and extraction of Cd(II), Co(II), Cu(II), Mn(II), and Ni(II) ions in aqueous solutions before FAAS analysis. The magnetic TiO2-µPs@S was well characterized by UV-vis, FTIR, XRD, SEM, and EDS techniques, and the material was well functionalized, pure, and had a slightly rod-like morphology. Under optimized conditions, initial concentration of 10 mg/L, sample solution pH of 7, adsorbent dose of 0.5 g/L, agitation speed of 200 rpm, and contact time of 45 min, the magnetic TiO2-µPs@S exhibited an adsorption capacity of 24.0, 34.9, 37.6, 38.5, and 27.9 mg/g for Cd(II), Co(II), Cu(II), Mn(II), and Ni(II), respectively. Then after, the desorption experiment was conducted using 5 mL of 0.2 M HNO3 as an eluting solvent. The method showed excellent linearity (R2 ≥ 0.998) in 0.05–10 mg/L concentration range. The limits of detection and quantification of the developed method were found to be in the range of 0.14–0.81 and 0.47–2.73 µg/L, consecutively, indicating high sensitivity of the proposed method, and <3% RSD was obtained. Furthermore, its practical applicability was assessed on tap water, lake water, and wastewater samples, and satisfactory percent recovery values, 84.5–114%, were acquired. These results indicate the potential applicability of the developed method. In general, the magnetic TiO2-µPs@S can be used as an effective adsorbent for removing heavy metals, and the adsorbent-based solid-phase extraction can be considered a promising technique for extracting and enriching heavy metals from aqueous solutions.
Thermally-induced magnetic phases in an Ising spin Kondo lattice model on a kagome lattice at 1/3-filling
Creators: name: Ishizuka, Hiroaki
name: Motome, Yukitoshi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Numerical investigation on the thermodynamic properties of an Ising spin Kondo lattice model on a kagome lattice is reported. By using Monte Carlo simulation, we investigated the magnetic phases at 1/3-filling. We identified two successive transitions from high-temperature paramagnetic state to a Kosterlitz-Thouless-like phase in an intermediate temperature range and to a partially disordered phase at a lower temperature. The partially disordered state is characterized by coexistence of antiferromagnetic hexagons and paramagnetic sites with period $\sqrt3 \times \sqrt3$. We compare the results with those for the triangular lattice case.
description: 4 pages, 2 figures
Structuring Knowledge of Subcultural Folk Devils through News Coverage: Social Cognition, Semiotics, and Political Economy
Creators: name: Williams, J. Patrick
Publisher: name: Studies of Transition States and Societies
Year: 2013
Subjects: folk devil; media; moral panic; news; social cognition; subculture; youth

description: The folk devil concept has been well used in subcultural studies, yet its importance might be better served by distinguishing among multiple conceptual frames through which it is articulated. In this article, I clarify how folk devils are made possible through the interaction of three concepts used by sociologists to study everyday life. The ﬁ rst is the process of social cognition, where producers and consumers of news construct and propagate a shared deﬁ nition of who subcultural youths are and why they should be the object of fear. The second are the semiotic structures of genre and narrative, which narrow the interpretive process of producers and receivers alike and sustain discourses that limit how subcultural youths can be understood in the news. The third has to do with political economy, where the ideological features of mass mediated news-making keep the news industry in relative control of meaning making. Social cognition, semiotics, and the political economy dialectically produce the phenomenon of the subcultural folk devil and support its objective eﬀ ects. I review several studies of market and state-controlled media societies and note that, in both types, the objective eﬀ ects on youths are similar and signiﬁ cant. In studying how subcultural youths are framed in the media output of transitional states and societies, the conceptual value of social cognition, semiotics, and political economy should be recognised.
description: Studies of Transition States and Societies, Vol 3, No 2 (2011): Special Issue
Anderson localization in a periodic photonic lattice with a disordered boundary
Creators: name: Naether, Uta
name: Meyer, Julia M.
name: Stützer, Simon
name: Tünnermann, Andreas
name: Nolte, Stefan
name: Molina, Mario I.
name: Szameit, Alexander
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate experimentally the light evolution inside a two-dimensional finite periodic array of weakly- coupled optical waveguides with a disordered boundary. For a completely localized initial condition away from the surface, we find that the disordered boundary induces an asymptotic localization in the bulk, centered around the initial position of the input beam.
description: 3 pages, 4 figures