cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The effect of a two-fluid atmosphere on relativistic stars
Creators: name: Govender, Gabriel
name: Brassel, Byron P.
name: Maharaj, Sunil D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We model the physical behaviour at the surface of a relativistic radiating star in the strong gravity limit. The spacetime in the interior is taken to be spherically symmetrical and shear-free. The heat conduction in the interior of the star is governed by the geodesic motion of fluid particles and a nonvanishing radially directed heat flux. The local atmosphere in the exterior region is a two-component system consisting of standard pressureless (null) radiation and an additional null fluid with nonzero pressure and constant energy density. We analyse the generalised junction condition for the matter and gravitational variables on the stellar surface and generate an exact solution. We investigate the effect of the exterior energy density on the temporal evolution of the radiating fluid pressure, luminosty, gravitational redshift and mass flow at the boundary of the star. The influence of the density on the rate of gravitational collapse is also probed and the strong, dominant and weak energy conditions are also tested. We show that the presence of the additional null fluid has a significant effect on the dynamical evolution of the star.
description: 31 pages, Minor corrections implemented
Lewis Frieman 2017 Hall Rings field system
Creators: name: Frieman, Catherine
Publisher: name: figshare
Year: 2020
Subjects: subject: 210105 Archaeology of Europe, the Mediterranean and the Levant
subject: FOS: History and archaeology
subject: 40499 Geophysics not elsewhere classified
subject: FOS: Earth and related environmental sciences

description: Lewis, J. & Frieman, C.J. 2017. A geophysical survey of Hall Rings enclosure and Field system, Pelynt, Cornwall. Southeast Kernow Archaeological Survey, Report No. 9.
Cos4Env: a portal that integrates environmental data from multiple citizen observatories
Creators: name: Justamante, Ángela
name: De La Riva, Santiago Martínez
name: Parrilla, Marisol
name: Ribera, Robin Giles
name: Liñán, Sonia
name: Soacha, Karen
name: Piera, Jaume
Publisher: name: Zenodo
Year: 2023
Subjects: citizen science
citizen observatories
environmental data
environment
European Open Science Cloud
EOSC

description: Cos4Env is a service that integrates environmental data from multiple citizen observatories in one place. More information: https://cos4cloud-eosc.eu/cos4env/ Cos4Env has been developed by Bineo Consulting in the Cos4Cloud framework. Infographic designer: Lucas Wainer.
Cos4Bio: an online portal that integrates biodiversity observations from multiple citizen observatories
Creators: name: Justamante, Ángela
name: De La Riva, Santiago Martínez
name: Parrilla, Marisol
name: Ribera, Robin Giles
name: Liñán, Sonia
name: Soacha, Karen
name: Piera, Jaume
Publisher: name: Zenodo
Year: 2023
Subjects: citizen science
environment
environmental data
citizen observatories
citizen science data

description: Cos4Bio is an online platform that integrates observations on biodiversity from various citizen observatories, potentially an enormous number of observations that are of interest to the expert community. The portal allows citizen science experts to view and identify all the observations in one place. Once identified, the observation returns to the citizen observatory portal where it was reported for final validation according to their specific algorithm. More information: https://cos4cloud-eosc.eu/services/cos4bio/ Cos4Bio has been developed by Bineo Consulting in the Cos4Cloud framework. Infographic designer: Lucas Wainer.
Discovering Heavy New Physics in Boosted $Z$ Channels: $Z \rightarrow l ^+l^- $ vs. $ Z \rightarrow ν\barν$
Creators: name: Backović, Mihailo
name: Flacke, Thomas
name: Kim, Jeong Han
name: Lee, Seung J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We propose a strategy for new physics searches in channels which contain a boosted $Z$ boson in the final state. Our proposal exploits the previously overlooked advantages of boosted $Z\rightarrow ν\barν$ topologies, where collimated neutrinos result in signals with large missing energy. We illustrate the advantage of this channel in a case study of singly produced TeV scale charge 2/3 fermionic top partners ($T'$) which decay to $t+Z$. A comparison with the di-leptonic channel reveals that signals with missing energy offer superior probes of new physics at TeV scales, despite the large $t\bar{t}$ backgrounds. The effect can be attributed to a factor of $\sim 3$ enhancement in the signal cross section, coming from the branching ratio of $Z\rightarrow ν\barν$. We exploit the unique event topology of singly produced top partners to suppress the $t\bar{t}$ background, as well as further improve on the existing proposals to detect $T'$ in the boosted di-lepton channel. Our conclusions on advantages of $Z\rightarrow ν\barν$ can be extended to most physics searches which utilize a boosted $Z$ boson in the final state.
description: Fig. 2 added, typos fixed, references added, version corresponds to version published in PRD
DUNS: a data use notification service for citizen observatories
Creators: name: Justamante, Ángela
name: De La Riva, Santiago Martínez
name: Parrilla, Marisol
name: Giles, Robin
name: Liñán, Sonia
name: Soacha, Karen
name: Piera, Jaume
Publisher: name: Zenodo
Year: 2023
Subjects: citizen science
notification service
citizen observatory
LSID
data use
EOSC
European Open Science Cloud

description: DUNS (Data Use Notification Service) is a centralised service to (1) register the use of citizen science observations downloaded from the Cos4Bio portal and (2) make this information available to the citizen observatory the observation comes from. The aim is to help make citizen observatories aware of how their data is used and reward their users’ contributions. More information: https://cos4cloud-eosc.eu/services/data-use-notification/ DUNS has been developed by Bineo Consulting in the Cos4Cloud framework. Infographic designer: Lucas Wainer.
A Deep-structured Conditional Random Field Model for Object Silhouette Tracking
Creators: name: Shafiee, Mohammad
name: Azimifar, Zohreh
name: Wong, Alexander
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: In this work, we introduce a deep-structured conditional random field (DS-CRF) model for the purpose of state-based object silhouette tracking. The proposed DS-CRF model consists of a series of state layers, where each state layer spatially characterizes the object silhouette at a particular point in time. The interactions between adjacent state layers are established by inter-layer connectivity dynamically determined based on inter-frame optical flow. By incorporate both spatial and temporal context in a dynamic fashion within such a deep-structured probabilistic graphical model, the proposed DS-CRF model allows us to develop a framework that can accurately and efficiently track object silhouettes that can change greatly over time, as well as under different situations such as occlusion and multiple targets within the scene. Experiment results using video surveillance datasets containing different scenarios such as occlusion and multiple targets showed that the proposed DS-CRF approach provides strong object silhouette tracking performance when compared to baseline methods such as mean-shift tracking, as well as state-of-the-art methods such as context tracking and boosted particle filtering.
description: 17 pages
Diameter of the commutation classes graph of a permutation
Creators: name: Gutierres, G.
name: Mamede, R.
name: Santos, J. L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We define a statistic on the graph of commutation classes of a permutation of the symmetric group which is used to show that these graphs are equipped with a ranked poset structure, with a minimum and maximum. This characterization also allows us to compute the diameter of the commutation graph for any permutation, from which the results for the longest permutation and for fully commutative permutations are recovered.
description: Some typos corrected and references added
Torsion exponents in stable homotopy and the Hurewicz homomorphism
Creators: name: Mathew, Akhil
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We give estimates for the torsion in the Postnikov sections $τ_{[1, n]} S^0$ of the sphere spectrum, and show that the $p$-localization is annihilated by $p^{n/(2p-2) + O(1)}$. This leads to explicit bounds on the exponents of the kernel and cokernel of the Hurewicz map $π_*(X) \to H_*(X; \mathbb{Z})$ for a connective spectrum $X$. Such bounds were first considered by Arlettaz, although our estimates are tighter and we prove that they are the best possible up to a constant factor. As applications, we sharpen existing bounds on the orders of $k$-invariants in a connective spectrum, sharpen bounds on the unstable Hurewicz of an infinite loop space, and prove an exponent theorem for the equivariant stable stems.
description: 13 pages. To appear in Algebraic and Geometric Topology
Semi-continuity of Stability for Sheaves and Variation of Gieseker Moduli Spaces
Creators: name: Greb, Daniel
name: Ross, Julius
name: Toma, Matei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 14D20, 14J60, 32G13, 14L24, 16G20

description: We investigate a semi-continuity property for stability conditions for sheaves that is important for the problem of variation of the moduli spaces as the stability condition changes. We place this in the context of a notion of stability previously considered by the authors, called multi-Gieseker-stability, that generalises the classical notion of Gieseker-stability to allow for several polarisations. As such we are able to prove that on smooth threefolds certain moduli spaces of Gieseker-stable sheaves are related by a finite number of Thaddeus-flips (that is flips arising for Variation of Geometric Invariant Theory) whose intermediate spaces are themselves moduli spaces of sheaves.
description: 40 pages, reorganised and new introduction and new title. Main results unchanged
Integrating spatial continuous wavelet transform and constraints-based boundary recognition model to detect the urban-rural fringe
Creators: name: Jing, Yang
name: Jingwen Dong
name: Yizhong Sun
name: Zhu, Jie
name: Huang, Yi
name: Yang, Sheng
Publisher: name: figshare
Year: 2019
Subjects: subject: 120504 Land Use and Environmental Planning
subject: FOS: Social and economic geography

description: It contains the remote sensing data, POI data, night lighting data of Jiangyin City, and the codes of SCWT method and Constraints-based boundary recognition model.
The LISA beamline at ESRF: present status
Creators: name: D'Acapito, Francesco
name: PUri, Alessandro
name: Orsilli, Jacopo
Publisher: name: Zenodo
Year: 2023

description: The LISA beamline is operative on a bending magnet source of the new ESRF-EBS storage ring. It is presently open to users through the open access programs provided by ESRF and CERIC. In this poster we will present the latest user statistics, updates and technical developments of the beamline. In particular, we will show the LISA capability of dealing with small sized samples with an example on rare earth dopants in the core of optic fibres. Moreover, we will show the new data collection and storage policy that follows the FAIR prescriptions will be presented as well as the new software for the collection of data in pump-and-probe mode [1]. The new data pre-treatment code and a renewed version of the beamline user manual will also be shown. As a perspective, we will introduce the new BLISS beamline control environment that has become the new standard for ESRF and that will be soon implemented at the beamline. Acknowledgements: The experiment on the optic fibres was carried out in collaboration with W. Blanc from Nice University. [1] F. d’Acapito et al.,”Activity report of the Italian CRG beamline at the European Synchrotron Radiation Facility (ESRF), Year 2022”, DOI: 10.5281/zenodo.7436673.
Proposal for Quantum Rational Secret Sharing
Creators: name: Maitra, Arpita
name: De, Sourya Joyee
name: Paul, Goutam
name: Pal, Asim K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: A rational secret sharing scheme is a game in which each party responsible for reconstructing a secret tries to maximize his utility by obtaining the secret alone. Quantum secret sharing schemes, either derived from quantum teleportation or from quantum error correcting code, do not succeed when we assume rational participants. This is because all existing quantum secret sharing schemes consider that the secret is reconstructed by a party chosen by the dealer. In this paper, for the first time, we propose a quantum secret sharing scheme which is resistant to rational parties. The proposed scheme is fair (everyone gets the secret), correct and achieves strict Nash equilibrium.
The dual role of the student athlete: Meaningful work and resilience
Creators: name: Higgins, Matthew
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Sports Studies
subject: Industrial and Organizational Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Meaningful work
subject: Resilience

description: Regression analysis of the relationship between meaningful work and resilience for college student athletes.
Gentle patterning approaches towards compatibility with bio-organic materials and their environmental aspects
Creators: name: Grebenko, Artem K.
name: Motovilov, Konstantin A.
name: Bubis, Anton V.
name: Nasibulin, Albert G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Advances in material science, bio-electronic, and implantable medicine combined with recent requests for eco-friendly materials and technologies inevitably formulate new challenges for nano- and micro-patterning techniques. Overall, the importance of creating micro and nanostructures is motivated by a large manifold of fundamental and applied properties accessible only at the nanoscale. Lithography is a crucial family of fabrication methods to create prototypes and produce devices on an industrial scale. The pure trend in the miniaturization of critical electronic semiconducting components is recently enhanced by implementing bio-organic systems in electronics. So far, significant efforts have been made to find novel lithographic approaches and develop old ones to reach compatibility with delicate bio-organic systems and minimize the impact on the environment. Herein, we briefly review such delicate materials and sophisticated patterning techniques.
description: Submitted to Small, Wiley-VCH
Integrable nonlinear Klein-Gordon systems with $\mathcal{PT}$ nonlocality and/or space-time exchange nonlocality
Creators: name: Jia, Man
name: Lou, S. Y.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In additional to the parity ($\mathcal{P}$) symmetric, time reversal ($\mathcal{T}$) symmetric, and $\mathcal{PT}$ symmetric nonlocal integrable systems, some other types of nonlocal integrable Klein-Gordon models with the space-time exchange nonlocality and the moving nolocality are proposed. The Lax pairs of the established nonlinear nonlocal Klein-Gordon equations are explicitly given. A special soliton solution, composed of $\mathcal{PT}$-symmetric part and $\mathcal{PT}$-antisymmetric part, is illustrated with the shape change.
Unemployment gap, isteresi e disoccupazione di lunga durata: quale ruolo per la comprensione dell’inflazione?
Creators: name: Romaniello, Davide
Publisher: name: Moneta e Credito
Year: 2022

description: L’appiattimento della Curva di Phillips, in presenza di alti e persistenti tassi di disoccupazione, è una delle possibili manifestazioni dell’isteresi. L’interpretazione più diffusa attribuisce l’isteresi all’aumento dei disoccupati di lunga durata i quali, in quanto emarginati dal mercato del lavoro, ostacolerebbero l’azione depressiva della disoccupazione totale sui salari. Non considerare "il rischio" di isteresi, porterebbe a sottostimare il NAIRU e ad attendersi una disinflazione maggiore di quella effettivamente osservata. Per quanto rappresenti un tentativo di estendere al lungo periodo il ruolo della domanda aggregata, la teoria dell’isteresi resta ancorata ai principi neoclassici e necessita di addurre eccezioni particolari per spiegare i fenomeni della persistenza della disoccupazione e dell’assenza di (dis)inflazione. Al contrario, un approccio alternativo che coniughi il principio della domanda effettiva con una spiegazione conflittuale della distribuzione può fornire una spiegazione solida della presenza di alti tassi di disoccupazione e delle dinamiche dei prezzi.
description: Moneta e Credito, Vol. 75 No. 299 (2022)
The Relationship between Poverty and Depression: Urban-rural Comparison
Creators: name: Kim, Taewan
name: Kim, Taewan
Publisher: name: Unknown
Year: 2015
Subjects: subject: Community/Rural/Urban Development
subject: Food Security and Poverty
subject: poverty
subject: depression
subject: urban-rural comparison

description: This paper analyzes poverty and depression in cities and rural areas in Korea. The authors used the Korea Welfare Panel Study for cross-sectional and panel analysis. Also, we employed basic statistics and regression (poission and multinominal logistic) analysis. We found differences in poverty and depression between cities and rural areas. First, there was a positive relation between poverty and depression in cities and rural areas. Second, there were differences between the two areas. For instance, poverty rates were higher in rural areas than in cities, while depression rates were higher in cities than in rural areas. By sex and age, poverty and depression rates were higher for women and older people than in men and younger people. The implication is that cities and rural areas need different policy measures which reflect their different characteristics.
Axel Leijonhufvud: A personal recollection from an Austrian perspective
Creators: name: Ferlito, Carmelo
Publisher: name: PSL Quarterly Review
Year: 2022

description: Professor Axel Leijonhufvud passed away few months ago, at the age of 89. Despite the fact that the contribution he made to economics has been widely recognized, his approach remains ‘problematic’ because of his dialogue and proximity with different streams of thought, and in particular with the Austrian School. This short recollection, developed from an Austrian perspective, touches only briefly on Leijonhufvud’s hybrid interpretation of the Great Recession. More space is instead devoted to analysing his institutional approach to the phenomenon of inflation and its link with monetary policy and monetary regimes. Some reflections are focused on the importance of microfoundations and of studying the market process as a process of inter-temporal coordination, with a final call for humility within the economics profession.
description: PSL Quarterly Review, Vol. 75 No. 302 (2022): September
Multiphonon quantum dynamics in cavity optomechanical systems
Creators: name: Macovei, Mihai A.
name: Pálffy, Adriana
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The multiphonon quantum dynamics in laser-pumped cavity optomechanical samples containing a vibrating mirror is investigated. Especially, we focus on dispersive interaction regimes where the externally applied coherent field frequency detuning from the optical resonator frequency is not equal to the mirror's oscillating frequency or to its multiples. As a result, for moderately strong couplings among the involved subsystems, the quantum dynamics of this complex system is described by multiphonon absorption or emission processes, respectively. Particularly, we demonstrate efficient ways to monitor the phonon quantum dynamics via photon detection. The possibility to extract the relevant sample parameters, for instance, the coupling strength between the mechanical mirror and the electromagnetic field, is also discussed.
description: 8 pages, 3 figures
Chile: The road to joy is paved with obstacles
Creators: name: Yajima, Giuliano Toshiro
Publisher: name: PSL Quarterly Review
Year: 2022

description: The second round of the Presidential elections in Chile marked a swing in the local political scenario. The coalition led by Gabriel Boric secured an unprecedented victory under the premise of delivering long-awaited reforms to a financially volatile, structurally fragile and deeply unequal economic structure. This paper sheds light on these three aspects of the Chilean economy, showing that its external and internal fragility feeds back on the excessive specialization and heterogeneity of the productive sectors, which in turn influence income and wealth distribution. It is argued that, in order to carry out an effective progressive agenda, the newly elected government should avoid yielding to the “discreet charm” of the Chilean bourgeoisie and its core principles – which includes fiscal prudence, minimum government intervention and financial liberalization.
description: PSL Quarterly Review, Vol. 75 No. 302 (2022): September
Double Higgs mechanisms, supermassive stable particles and the vacuum energy
Creators: name: Santillán, Osvaldo P.
name: Gabbanelli, Luciano
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the present work it is shown that some specific double Higgs like mechanisms may have interesting cosmological applications. A hidden scenario which cast long lived super heavy particles together with an extremely light particle $a$ with mass $m_a\sim 10^{-32}-10^{-33}$eV is presented. The potential energy of this particle models the vacuum energy density of the universe $ρ_c\simeq 10^{-47}\;\hbox{GeV}^4$. The construction of such scenario is non trivial since the presence of light particles may spoil the stability of the heavy particles. However, double Higgs mechanisms may be helpful for overcoming this problem. The hidden sector we propose include fermions with masses near the neutrino mass $m_ν\sim 10^{-2}$eV which arise in terms of a see saw mechanism. Besides, the super heavy particles acquire a mass due to a double Higgs like mechanism of the order of the GUT scale. The gauge group of the model is $\hbox{SU(2)}_L$ and the scalars of the double Higgs mechanism are not charged under these interactions. The light particle $a$ is the Goldstone boson associated to a Peccei-Quinn like symmetry in the double Higgs model. In addition, the double Higgs mechanism posses another CP odd scalar $A^0$, which acquire a mass of the order of the GUT scale. We show that if there is no direct coupling between $A^0$ and $a$, even in presence of indirect couplings, the $A^0$ particle is long lived an may appear in events above the GKZ bound in present times.
description: The decaying particle was changed from an scalar to a pseudoscalar since it improves stability issues, and some features that inhibits the coupling between CP odd scalars have been added
Why the distribution of wealth matters: Industrial feudalism and social democracy
Creators: name: Szymborska, Hanna
name: Toporowski, Jan
Publisher: name: PSL Quarterly Review
Year: 2022

description: This paper explains how growing inequality of wealth and asset inflation inhibits social mobility and the functioning of the labour market, whose efficiency is a key feature of macroeconomic theory and labour economics. However, because the composition of wealth differs between social classes, growing inequality of wealth tends to more rigid social stratification, preventing the social mobility that is held to be the great advantage of free market capitalism. The paper outlines a theory of wealth distribution and credit practices that maintain a more or less rigid system of social stratification, which we call industrial feudalism. The origin of this idea is found in the work of Polish economists and social critics in the first half of the last century. Industrial feudalism also restricts the functioning of the labour market. State welfare provision, which is supposed to overcome barriers to social mobility, is undermined when the propertied classes find that they can meet their welfare needs from cash flows generated by their wealth. In this way, industrial feudalism signals the end of the welfare state and social democracy.
description: PSL Quarterly Review, Vol. 75 No. 302 (2022): September
A macro to micro analysis to understand performance in 100‑mile ultra‑marathons worldwide
Creators: name: Thuany, Mabliny
name: Weiss, Katja
name: Villiger, Elias
name: Scheer, Volker
name: Ouerghi, Nejmeddine
name: Gomes, Thayse
name: Knechtle, Beat
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 4207
subject: Sports science and exercise
classificationCode: 42
subject: Health sciences
subject: FOS: Health sciences

description: The purposes of this study were (i) to describe differences in participation in 100-mile ultra-marathons by continent; (ii) to investigate differences in performance between continents; and (iii) to identify the fastest runners by continent and country. Data from 148,169 athletes (119,408 men), aged 18–81 years, and finishers in a 100-miles ultra-marathon during 1870–2020 were investigated. Information about age, gender, origin, performance level (top three, top 10, top 100) was obtained. Kruskal–Wallis tests and linear regressions were performed. Athletes were mostly from America and Europe. A macro-analysis showed that the fastest men runners were from Africa, while the fastest women runners were from Europe and Africa. Women from Sweden, Hungary and Russia presented the best performances in the top three, top 10 and top 100. Men from Brazil, Russia and Lithuania were the fastest. The lowest performance and participation were observed for runners from Asia. In summary, in 100-miles ultra-marathon running, the majority of athletes were from America, but for both sexes and performance levels, the fastest runners were from Africa. On a country level, the fastest women were from Sweden, Hungary and Russia, while the fastest men were from Brazil, Russia and Lithuania
Debt-led growth and its financial fragility: an investigation into the dynamics of a supermultiplier model
Creators: name: David Avritzer, Joana
Publisher: name: PSL Quarterly Review
Year: 2022

description: This paper discusses the financial sustainability of demand-led growth models. We assume a supermultiplier growth model in which household consumption is the autonomous component of demand that drives growth and discuss the financial sustainability of such dynamics of growth from the perspective of the working households. We show that for positive rates of growth the model converges to an equilibrium where worker households are accumulating debt and not wealth. We also show that when the economy is growing at a rate that is positive, but not too high the model also implies that households will not be able to service their debt at the point of full long run equilibrium. We then conclude that this household debt-financed consumption pattern of economic growth generates an internal dynamic that leads to financial instability.
description: PSL Quarterly Review, Vol. 75 No. 302 (2022): September
Towards a Unified Approach to Homography Estimation Using Image Features and Pixel Intensities
Creators: name: Nogueira, Lucas
name: de Paiva, Ely C.
name: Silvera, Geraldo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The homography matrix is a key component in various vision-based robotic tasks. Traditionally, homography estimation algorithms are classified into feature- or intensity-based. The main advantages of the latter are their versatility, accuracy, and robustness to arbitrary illumination changes. On the other hand, they have a smaller domain of convergence than the feature-based solutions. Their combination is hence promising, but existing techniques only apply them sequentially. This paper proposes a new hybrid method that unifies both classes into a single nonlinear optimization procedure, applies the same minimization method, and uses the same homography parametrization and warping function. Experimental validation using a classical testing framework shows that the proposed unified approach has improved convergence properties compared to each individual class. These are also demonstrated in a visual tracking application. As a final contribution, our ready-to-use implementation of the algorithm is made publicly available to the research community.
Land-constrained growth in a developing economy: A Kaldorian perspective
Creators: name: Gupta, Isha
Publisher: name: PSL Quarterly Review
Year: 2022

description: The paper develops a two-sector model of economic growth, using agriculture and industry. The distinguishing feature in this analysis is that land is an essential input in the agricultural sector, but it is also used in the production process of industrial sector, which is assumed to be imperfectly competitive. The significant role of land allocations is highlighted for a developing economy like India, where any constraint on land transfers from agricultural to non-agricultural sectors imposes a constraint on the overall growth process of the economy. Using the two-sector Kaldorian framework, we analyse the complementary interactions between agriculture and industry through trade flows, labour movements, and land transfers in this setup. We characterize the balanced growth path for such an economy in the long run using two scenarios: a) equilibrium growth with fixed distribution of land by the centralized authority in each sector and b) equilibrium growth with inter-sectoral land transfers accompanied by land-saving innovations in each sector.
description: PSL Quarterly Review, Vol. 75 No. 302 (2022): September
Topological phase transitions in superradiance lattices
Creators: name: Wang, Da-Wei
name: Cai, Han
name: Yuan, Luqi
name: Zhu, Shi-Yao
name: Liu, Ren-Bao
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological phases of matters are of fundamental interest and have promising applications. Fascinating topological properties of light have been unveiled in classical optical materials. However, the manifestation of topological physics in quantum optics has not been discovered. Here we study the topological phases in a two-dimensional momentum-space superradiance lattice composed of timed Dicke states (TDS) in electromagnetically induced transparency (EIT). By periodically modulating the three EIT coupling fields, we can create a Haldane model with in-situ tunable topological properties, which manifest themselves in the contrast between diffraction signals emitted by superradiant TDS. The topological superradiance lattices provide a controllable platform for simulating exotic phenomena in condensed matter physics and offer a basis of topological quantum optics and novel photonic devices.
description: 11 pages, 10 figures
Ben-David et al._STOTEN_SuppInfo_AB_IS_EBD.docx
Creators: name: Ben-David, Eric
name: Sabbah, Isam
name: Angel, Dror L.
name: Booth, Andy M.
Publisher: name: figshare
Year: 2020
Subjects: subject: 50204 Environmental Impact Assessment
subject: FOS: Earth and related environmental sciences
subject: 50205 Environmental Management
subject: 50206 Environmental Monitoring
subject: 50207 Environmental Rehabilitation (excl. Bioremediation)
subject: Environmental Science
subject: 50299 Environmental Science and Management not elsewhere classified
subject: 59999 Environmental Sciences not elsewhere classified

description: Microplastic distributions in a domestic wastewater treatmentplant: removal efficiency, seasonal variation and influence of sampling technique
A Dark Year for Tidal Disruption Events
Creators: name: Guillochon, James
name: Ramirez-Ruiz, Enrico
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The disruption of a main-sequence star by a supermassive black hole results in the initial production of an extended debris stream that winds repeatedly around the black hole, producing a complex three-dimensional figure that may self-intersect. Both analytical work and simulations have shown that typical encounters generate streams that are extremely thin. In this paper we show that this implies that even small relativistic precessions attributed to black hole spin can induce deflections that prevent the stream from self-intersecting even after many windings. Additionally, hydrodynamical simulations have demonstrated that energy is deposited very slowly via hydrodynamic processes alone, resulting in the liberation of very little gravitational binding energy in the absence of stream-stream collisions. This naturally leads to a "dark period" in which the flare is not observable for some time, persisting for up to a dozen orbital periods of the most bound material, which translates to years for disruptions around black holes with mass $\sim 10^{7} M_{\odot}$. We find that more-massive black holes tend to have more violent stream self-intersections, resulting in short viscous times that lead to prompt accretion onto the black hole. For these tidal disruption events (TDEs), the accretion rate onto the black hole should still closely follow the original fallback rate after a fixed delay time $t_{\rm delay}$. For lower black hole masses ($M_{\rm h} \lesssim 10^{6}$), we find that flares are typically slowed down by about an order of magnitude, and because the accretion rates for TDEs about higher-mass black hole are already sub-Eddington, this results in the majority of TDEs being sub-Eddington at peak. This also implies that current searches for TDEs are biased towards prompt flares, with slowed flares likely having been unidentified. [abridged]
description: Accepted to ApJ. Updated version adds new figure (Figure 9). 11 pages, 9 figures. Movie of stream intersections available at http://youtu.be/W3VCdidJ5zg
Co-evolution of Extreme Star Formation and Quasar: hints from {\it Herschel} and the Sloan Digital Sky Survey
Creators: name: Ma, Zhiyuan
name: Yan, Haojing
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using the public data from the Herschel wide field surveys, we study the far-infrared properties of optical-selected quasars from the Sloan Digital Sky Survey. Within the common area of $\sim 172~deg^2$, we have identified the far-infrared counterparts for 354 quasars, among which 134 are highly secure detections in the Herschel $250~μm$ band (signal-to-noise ratios $\geq5$). This sample is the largest far-infrared quasar sample of its kind, and spans a wide redshift range of $0.14{\leq}z\leq 4.7$. Their far-infrared spectral energy distributions, which are due to the cold dust components within the host galaxies, are consistent with being heated by active star formation. In most cases ($\gtrsim80$\%), their total infrared luminosities as inferred from only their far-infrared emissions ($L_{IR}^{(cd)}$) already exceed $10^{12}~L_{\odot}$, and thus these objects qualify as ultra-luminous infrared galaxies. There is no correlation between $L_{IR}^{(cd)}$ and the absolute magnitudes, the black hole masses or the X-ray luminosities of the quasars, which further support that their far-infrared emissions are not due to their active galactic nuclei. A large fraction of these objects ($\gtrsim50\text{--}60\%$) have star formation rates $\gtrsim 300~M_{\odot}yr^{-1}$. Such extreme starbursts among optical quasars, however, is only a few per cent. This fraction varies with redshift, and peaks at around $z\approx2$. Among the entire sample, 136 objects have secure estimates of their cold-dust temperatures ($T$), and we find that there is a dramatic increasing trend of $T$ with increasing $L_{IR}^{(cd)}$. We interpret this trend as the envelope of the general distribution of infrared galaxies on the ($T$, $L_{IR}^{(cd)}$) plane.
description: 26 pages, 20 figures, Accepted for publication in ApJ
Photoinduced prethermalization phenomena in correlated metals
Creators: name: Alexander, Marc
name: Kollar, Marcus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study prethermalization phenomena in weakly interacting Hubbard systems after electric-field pump pulses with finite duration. We treat the Hubbard interaction up to second order, applying the prethermalization paradigm for time-dependent interaction protocols, and the electric field strength beyond linear order. A scaling behavior with pulse duration is observed for the absorbed energy as well as individual prethermalized momentum occupation numbers, which we attribute to the leading quadratic orders in interaction and electric field. We show that a pronounced non-thermal momentum distribution can be created with pump pulses of suitable resonance frequencies, and discuss how to distinguish them from thermal states.
description: accepted version, to be published in phys.stat.sol.(b)
title: Children's use of egocentric reference frames in spatial language is related to their numerical magnitude understanding
Creators: name: Lindner, Nadja
name: Moeller, Korbinian
name: Hildebrandt, Frauke
name: Hasselhorn, Marcus
name: Lonnemann, Jan
Publisher: name: Universitätsverlag Potsdam
Year: 2023
Subjects: subject: 150 Psychologie

description: Numerical magnitude information is assumed to be spatially represented in the form of a mental number line defined with respect to a body-centred, egocentric frame of reference. In this context, spatial language skills such as mastery of verbal descriptions of spatial position (e.g., in front of, behind, to the right/left) have been proposed to be relevant for grasping spatial relations between numerical magnitudes on the mental number line. We examined 4- to 5-year-old’s spatial language skills in tasks that allow responses in egocentric and allocentric frames of reference, as well as their relative understanding of numerical magnitude (assessed by a number word comparison task). In addition, we evaluated influences of children’s absolute understanding of numerical magnitude assessed by their number word comprehension (montring different numbers using their fingers) and of their knowledge on numerical sequences (determining predecessors and successors as well as identifying missing dice patterns of a series). Results indicated that when considering responses that corresponded to the egocentric perspective, children’s spatial language was associated significantly with their relative numerical magnitude understanding, even after controlling for covariates, such as children’s SES, mental rotation skills, and also absolute magnitude understanding or knowledge on numerical sequences. This suggests that the use of egocentric reference frames in spatial language may facilitate spatial representation of numbers along a mental number line and thus seem important for preschoolers’ relative understanding of numerical magnitude.
description: Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe; 815
New limits on $\mathbf{\tanβ}$ for 2HDMs with $\mathbf{Z_2}$ symmetry
Creators: name: Das, Dipankar
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In two-Higgs-doublet models with exact $Z_2$ symmetry, putting $m_h \simeq 125$ GeV at the alignment limit, the following limits on the heavy scalar masses are obtained from the conditions of unitarity and stability of the scalar potential: $m_H,~m_A,~m_{H^+} < 1$ TeV and $1/8
description: Version accepted in Int J of Mod Phys A
A New Mutation, Hb A2-Canakkale [δ10(A7)Ala→Val; HBD: c.32C>T], and Other Well-Known δ Variants Identified in a Selected Cohort with Low Hb A2 Levels
Creators: name: Karakaya, Taner
name: Silan, Fatma
name: Ozdemir, Ozturk
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Hemoglobinopathies are the most common single-gene disorders, and β-thalassemia (β-thal) imposes a tremendous health burden on Turkey. Thus, premarital carrier screening is obligatory in Turkey, as it is in some other countries. As a result of this mandatory procedure, at routine clinical checkups, many individuals who had undergone premarital screening but did not have any clinical symptoms and/or hematological findings, have compulsorily been required to undergo further evaluation due to abnormal levels of hemoglobin (Hb) fractions (Hb A, Hb A2 and Hb F). Many consequences, such as mutations in unrelated gene(s) or someone’s nutritional status, have been reported to affect the Hb fractions levels. In the present study, we aimed to determine whether HBD has a molecular causative role in patients with low Hb A2 levels (below 1.8%). The study was conducted with 20 individuals with low Hb A2 levels who had applied to our outpatient clinic. All DNA samples were analyzed for the HBD gene. Nineteen of the 20 subjects were diagnosed to carry a mutation with one of four different δ-globin variants. Three of them had been described previously [Hb A2-Yialousa (HBD: c.82G>T), Hb A2-Bornova (HBD: c.350G>C) and Hb A2-Yokoshima (HBD: c.77G>A)]. The novel [δ10(A7)Ala→Val, HBD: c.32C>T] mutation was defined as a new δ variant and reported to the HbVar database as Hb A2-Canakkale. In conclusion, the molecular characterization of Hb A2 low levels has been suggested to be significant for a definite diagnosis and counseling.
The Tsallis Distribution at Large Transverse Momenta
Creators: name: Azmi, M. D.
name: Cleymans, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Fits to the transverse momentum distributions of charged particles produced in p - p collisions at LHC energies based on the Tsallis distribution have been shown to work over 14 orders of magnitude. Two versions of the Tsallis distribution are compared and discussed, the thermodynamically consistent version leads to a temperature of T = 74 +/- 13 MeV at the highest beam energy, a result which is in agreement with previous analyses done with lower transverse momentum data.
description: 5 pages, 2 figures
Rural Welfare and the Marginal Rate of Population Aging
Creators: name: Park, Gil H.
name: Park, Gil H.
Publisher: name: Unknown
Year: 2015
Subjects: subject: Labor and Human Capital
subject: Productivity Analysis
subject: marginal rate of population aging: MRPA
subject: rural economic welfare
subject: rural scoial welfare

description: Concerning accelerated rural population aging, this article introduces the concept of the marginal rate of population aging (MRPA) drawing on the economics and welfare literatures. It is defined as the marginal rate of technical substitution between aggregate capital and “aging” aggregate labor. The traditional approach to (rural or agricultural) production was based on the presumption that aging does not affect production. However, the physical and mental capability of working decreases as population becomes aged. The externality of this declining capability needs to be reflected in aggregate productions and to be treated more significantly as population becomes more aged. After a review of the trends and spatial distributions of aging in Korea, a rural town is selected in this study as a case area whose parcel-level spatial data is analyzable in terms of MRPA. This exploratory analysis is focused on whether rural economic and social welfare may become complementary in rural aggregate production with MRPA if a design of the lifetime mortgage of farming assets (LMFA) leads to large-scale production and welfare improvements.
Post measurement bipartite entanglement entropy in conformal field theories
Creators: name: Rajabpour, M. A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive exact formulas for bipartite von Neumann entanglement entropy after partial projective local measurement in $1+1$ dimensional conformal field theories with periodic and open boundary conditions. After defining the set up we will check numerically the validity of our results in the case of Klein-Gordon field theory (coupled harmonic oscillators) and spin-$1/2$ XX chain in a magnetic field. The agreement between analytical results and the numerical calculations is very good. We also find a lower bound for localizable entanglement in coupled harmonic oscillators.
description: 6 pages , 5 figures
A Machian reformulation of Quantum Mechanics
Creators: name: Glampedakis, Kostas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The widely known but also somewhat esoteric Mach principle envisages a fully relational formulation of physical theories without any reference to a concept of `absolute space'. When applied to classical mechanics, under the guise of an extended symmetry group, this procedure is known to lead to an equation of motion with inertial-like forces that are sourced by the mass distribution of the system itself. In this paper we follow a similar procedure and reformulate the Schrödinger equation of non-relativistic quantum mechanics in a fully Machian way. Just like its classical counterpart, the resulting quantum theory is fully relational in the positions and momenta of the bodies comprising a given physical system, leaving no room for the notion of absolute space.
description: 12 pages, no figures. Final published version