cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Food Poverty in the UK: An Anthropological Study in North London and South Wales, 2014-2019
Creators: name: Caplan, P.
Publisher: name: UK Data Service
Year: 2022

description:
This study draws from data collected in two areas: a borough in north London and a county in west Wales. Interviews and participant observation were carried out in food banks, a soup kitchen,  community cafes and  centres, and a Citizen’s Advice Bureau for a five year period between 2014 and 2019. The researcher spoke to clients, trustees, volunteers, employees and made use of each organisation‘s own literature such as Facebook pages, web sites, minutes of meetings, and newsletters. The organisations were placed in their wider economic and political contexts, both local and national, with particular attention paid to changes in policy.

Use was also made of other research literature in the area of food poverty by social scientists and others, and I attended conferences and seminars and exchanged ideas and information with others researching the area, of whom there were an increasing number. The topic of food poverty was extensively and variously covered by the media. It was widely assumed that food poverty could be solved by used of surplus (‘waste’) food from the food industry distributed by food banks and other charitable organisations.

The findings revealed that the increase in food poverty had been exacerbated by a number of wider factors. One such was national austerity policies, including reductions in state benefits, justified through notions such as the ‘Big Society’ and individual responsibility. Another was the situation in the labour market, with many people only able to find precarious and low-paid work and others, especially in regions like parts of Wales, no work at all.
Archive in a box for Dataverse. Building Distributed Data Network with shared services
Creators: name: Tykhonov, Vyacheslav
name: Wittenberg, Marion
name: Steinhoff, Wilko
Publisher: name: Zenodo
Year: 2022
Subjects: dataverse
data repository
archive software
research infrastructure

description: "Archive in a box" presentation for the Dataverse Community Meeting 2022, Harvard University.
Invariant-based pulse design for three-level systems without the rotating-wave approximation
Creators: name: Kang, Yi-Hao
name: Chen, Ye-Hong
name: Huang, Bi-Hua
name: Song, Jie
name: Xia, Yan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, a scheme is put forward to design pulses which drive a three-level system based on the reverse engineering with Lewis-Riesenfeld invariant theory. The scheme can be applied to a three-level system even when the rotating-wave approximation (RWA) can not be used. The amplitudes of pulses and the maximal values of detunings in the system could be easily controlled by adjusting control parameters. We analyze the dynamics of the system by an invariant operator, so additional couplings are unnecessary. Moreover, the approaches to avoid singularity of pulses are studied and several useful results are obtained. We hope the scheme could contribute to fast quantum information processing without RWA.
description: 9 pages 9 figures, has been accepted for publication as a Regular Article in Annalen der Physik
2021 Census: Aggregate Data
Creators: name: Hurst, Cameron
Publisher: name: UK Data Service
Year: 2022

description:
For Northern Ireland the estimates are by five-year age band and sex, residence type, and the household count with average household size at country level. Estimates in this release were published in rounded form.

For England and Wales the estimates are rounded population and household estimates for local authorities and regions in England and Wales, by sex and five-year age group. The figures also include estimated household size and population density at local authority level.
Coupling librational and translational motion of a levitated nanoparticle in an optical cavity
Creators: name: Liu, Shengyan
name: Li, Tongcang
name: Yin, Zhang-qi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An optically levitated nonspherical nanoparticle can exhibit both librational and translational vibrations due to orientational and translational confinements of the optical tweezer, respectively. Usually, the frequency of its librational mode in a linearly-polarized optical tweezer is much larger than the frequency of its translational mode. Because of the frequency mismatch, the intrinsic coupling between librational and translational modes is very weak in vacuum. Here we propose a scheme to couple its librational and center-of-mass modes with an optical cavity mode. By adiabatically eliminating the cavity mode, the beam splitter Hamiltonian between librational and center-of-mass modes can be realized. We find that high-fidelity quantum state transfer between the librational and translational modes can be achieved with practical parameters. Our work may find applications in sympathetic cooling of multiple modes and quantum information processing.
description: 6 pages, 3 figures
On a stabilization mechanism for low velocity detonations
Creators: name: Sow, Aliou
name: Semenko, Roman E.
name: Kasimov, Aslan R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We use numerical simulations of the reactive Euler equations to analyze the nonlinear stability of steady-state one-dimensional solutions for gaseous detonations in the presence of both momentum and heat losses. Our results point to a possible stabilization mechanism for the low velocity detonations in such systems. The mechanism stems from the existence of a one-parameter family of solutions found in Semenko et al. (Shock Waves 26 (2), 141-160, 2016).
Efficient polarization analysis for focusing neutron instruments
Creators: name: Stahn, Jochen
name: Glavic, Artur
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Polarized neutrons are a powerful probe to investigate magnetism in condensed matter on length scales from single atomic distances to micrometers. With the ongoing advancement of neutron optics, that allow to transport beams with increased divergence, the demands on neutron polarizes and analyzers have grown as well. The situation becomes especially challenging for new instruments at pulsed sources, where a large wavelength band needs to be polarized to make efficient use of the time structure of the beam. Here we present a polarization analysis concept for highly focused neutron beams that is based on transmission supermirrors that are bend in the shape of equiangular spirals. The method allows polarizations above 95\% and good transmission, without negative impact on other beam characteristics. An example of a compact polarizing device already tested on the AMOR reflectometer is presented as well as the concept for the next generation implementation of the technique that will be installed on the Estia instrument being build for the European Spallation Source.
description: Proceedings of PNCMI 2016
Constructing the European Higher Education Student: a Comparative Study of six European Countries, 2016-2019
Creators: name: Brooks, R.
Publisher: name: UK Data Service
Year: 2022

description: There are currently over 35 million students within Europe and <span style="font-size:11.0pt;font-family:"Calibri",sans-serif; mso-fareast-font-family:Calibri;mso-fareast-theme-font:minor-latin;mso-ansi-language: EN-GB;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">yet there is no clear understanding  of the extent to which understandings of ‘the student’ are shared. Thus, a central aim of this project was to investigate how the contemporary higher education (HE) student is conceptualised and the extent to which this differs both within nation-states and across them. This is significant in terms of implicit (and sometimes explicit) assumptions that are made about common understandings of ‘the student’ across Europe – underpinning, for example, initiatives to increase cross-border educational mobility and the wider development of a European Higher Education Area. It is also significant in relation to exploring the extent to which understandings are shared within a single nation and, particularly, the degree to which there is congruence between the ways in which students are conceptualised within policy texts and by policymakers, and the understandings of other key social actors such as the media, higher education institutions and students themselves.
The empirical project was guided by four main research questions: (i) How are understandings of the higher education student produced, shaped and disseminated by (a) policymakers, (b) the media and (c) higher education institutions? (ii) To what extent do these understandings differ within and across European nations? (iii) How do students of different national and social backgrounds understand the role of the higher education student? (iv) To what extent are their understandings consonant with those produced, shaped and disseminated by policymakers, the media and higher education institutions?

To answer these questions, data were collected from six different European countries – Denmark, England, Ireland, Germany, Poland and Spain – and through four strands of work, each of which focuses on a different social actor i.e. policymakers, the media, higher education institutions and students themselves.
Study of the Process $e^+e^-\to π^+π^-π^+π^-$ IN THE C.M. Energy Range 920--1060 MeV with the CMD-3 Detector
Creators: name: Akhmetshin, R. R.
name: Amirkhanov, A. N.
name: Anisenkov, A. V.
name: Aulchenko, V. M.
name: Banzarov, V. Sh.
name: Bashtovoy, N. S.
name: Berkaev, D. E.
name: Bondar, A. E.
name: Bragin, A. V.
name: Eidelman, S. I.
name: Epifanov, D. A.
name: Epshteyn, L. B.
name: Erofeev, A. L.
name: Fedotovich, G. V.
name: Gayazov, S. E.
name: Grebenuk, A. A.
name: Gribanov, S. S.
name: Grigoriev, D. N.
name: Ignatov, F. V.
name: Ivanov, V. L.
name: Karpov, S. V.
name: Kasaev, A. S.
name: Kazanin, V. F.
name: Koop, I. A.
name: Kovalenko, O. A.
name: Korobov, A. A.
name: Kozyrev, A. N.
name: Kozyrev, E. A.
name: Krokovny, P. P.
name: Kuzmenko, A. E.
name: Kuzmin, A. S.
name: Logashenko, I. B.
name: Lysenko, A. P.
name: Lukin, P. A.
name: Mikhailov, K. Yu.
name: Okhapkin, V. S.
name: Pestov, Yu. N.
name: Perevedentsev, E. A.
name: Popov, A. S.
name: Razuvaev, G. P.
name: Rogovsky, Yu. A.
name: Ruban, A. A.
name: Ryskulov, N. M.
name: Ryzhenenkov, A. E.
name: Shebalin, V. E.
name: Shemyakin, D. N.
name: Shwartz, B. A.
name: Shwartz, D. B.
name: Sibidanov, A. L.
name: Shatunov, Yu. M.
name: Solodov, E. P.
name: Titov, V. M.
name: Talyshev, A. A.
name: Vorobiov, A. I.
name: Yudin, Yu. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A cross section of the process $e^+e^- \to \pipi\pipi$ has been measured using 6798$\pm$93 signal events from a data sample corresponding to an integrated luminosity of 9.8 pb$^{-1}$ collected with the CMD-3 detector in the center-of-mass energy range 920--1060 MeV. The measured cross section exhibits an interference pattern of the $ϕ(1020)\to\pipi\pipi$ decay with a non-resonant process $e^+e^- \to \pipi\pipi$, from which we obtain the branching fraction of the doubly suppressed decays (by G-parity and OZI rule): $\BR(ϕ\to\pipi\pipi) = (6.5\pm2.7\pm1.6)\times 10^{-6}$.
description: 16 pages, 6 figures
Maximal violation of n-locality inequalities in a star-shaped quantum network
Creators: name: Andreoli, Francesco
name: Carvacho, Gonzalo
name: Santodonato, Luca
name: Chaves, Rafael
name: Sciarrino, Fabio
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bell's theorem was a cornerstone for our understanding of quantum theory, and the establishment of Bell non-locality played a crucial role in the development of quantum information. Recently, its extension to complex networks has been attracting a growing attention, but a deep characterization of quantum behaviour is still missing for this novel context. In this work we analyze quantum correlations arising in the bilocality scenario, that is a tripartite quantum network where the correlations between the parties are mediated by two independent sources of states. First, we prove that non-bilocal correlations witnessed through a Bell-state measurement in the central node of the network form a subset of those obtainable by means of a separable measurement. This leads us to derive the maximal violation of the bilocality inequality that can be achieved by arbitrary two-qubit quantum states and arbitrary projective separable measurements. We then analyze in details the relation between the violation of the bilocality inequality and the CHSH inequality. Finally, we show how our method can be extended to n-locality scenario consisting of n two-qubit quantum states distributed among n+1 nodes of a star-shaped network.
description: 13 pages, 2 figures
Φορολογία ακινήτων
Creators: name: Παπαϊωάννου, Παναγιώτης Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Φορολογία
Ακίνητα
Εισόδημα
Τaxation
Real estate
Ιncome

description: Η φορολογία των ακινήτων αποτελεί έναν σημαντικό παράγοντα που επιδρά στο κόστος για την κτήση και την κατοχή, στα έσοδα από την χρήση και στα κέρδη από την πώληση ενός ακινήτου. Στην Ελλάδα εφαρμόζεται εδώ και τρεις περίπου δεκαετίες το σύστημα των αντικειμενικών αξιών. Αρχικός σκοπός του νομοθέτη υπήρξε ο αντικειμενικός προσδιορισμός του φόρου που θα κατέβαλε ο κάθε πολίτης στην εφορία σε περιπτώσεις αγοραπωλησίας ή άλλης εμπορικής εκμετάλλευσης κάποιου ακινήτου. Η αντικειμενική αξία ενός ακινήτου είναι ένα φορολογικό τεκμήριο που εκφράζεται σε αξία ανά τετραγωνικό μέτρο και προκύπτει βάση του αντικειμενικού συστήματος προσδιορισμού που καθορίζεται από το Υπουργείο Οικονομικών. Οι αντικειμενικές αξίες διαφοροποιούνται ανάλογα με την τοποθεσία που βρίσκεται το ακίνητο. Αφορά δε οποιαδήποτε πώληση ή δωρεά ακινήτου. Όλα τα παραπάνω – οι φόροι που επιβάλλονται στα ακίνητα, κατά την κατοχή, μεταβίβαση και τη χρήση τους – αποτελούν θέμα της παρούσας πτυχιακής εργασίας
description: Real estate taxation is an important factor that affects the cost of acquisition and ownership, income from use and profits from the sale of a property. In Greece, the system of objective values has been in place for almost three decades. The original purpose of the legislator was to determine the tax that each citizen would pay to the tax office in the event of a sale or other commercial exploitation of a property. The objective value of a property is a tax item expressed in value per square meter and derived from the objective system of determination determined by the Ministry of Finance. Objective values vary according to the location of the property. It concerns any sale or donation of property. All the above - the taxes imposed on the properties, their possession, transfer and use - are the subject of this dissertation
Toward an initial mass function for giant planets
Creators: name: Carrera, Daniel
name: Davies, Melvyn B.
name: Johansen, Anders
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The distribution of exoplanet masses is not primordial. After the initial stage of planet formation is complete, the gravitational interactions between planets can lead to the physical collision of two planets, or the ejection of one or more planets from the system. When this occurs, the remaining planets are typically left in more eccentric orbits. Here we use present-day eccentricities of the observed exoplanet population to reconstruct the initial mass function of exoplanets before the onset of dynamical instability. We developed a Bayesian framework that combines data from N-body simulations with present-day observations to compute a probability distribution for the planets that were ejected or collided in the past. Integrating across the exoplanet population, we obtained an estimate of the initial mass function of exoplanets. We find that the ejected planets are primarily sub-Saturn type planets. While the present-day distribution appears to be bimodal, with peaks around $\sim 1 M_{\rm J}$ and $\sim 20 M_\oplus$, this bimodality does not seem to be primordial. Instead, planets around $\sim 60 M_\oplus$ appear to be preferentially removed by dynamical instabilities. Attempts to reproduce exoplanet populations using population synthesis codes should be mindful of the fact that the present population has been depleted of intermediate-mass planets. Future work should explore how the system architecture and multiplicity might alter our results.
description: 10 pages, 9 figures; submitted to MNRAS
Association of migration status with quality of life among rural and urban adults with rare diseases: A cross-sectional study from China.
Creators: name: Zhang, Huanyu
name: Chen, Shanquan
name: Dong, Dong
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Public Health
migration
rare diseases
quality of life
rural
urban

description: Peer reviewed: True
description: Acknowledgements: The authors would like to thank the Illness Challenge Foundation for their assistance and coordination in distributing questionnaires.
description: BACKGROUND: A considerable proportion of rare disease patients decide to migrate to access a definitive diagnosis or appropriate care, which could affect their quality of life in a long term. OBJECTIVE: To compare quality of life (QoL) between migrants and residents and explore the possible mechanism of how migration influence the QoL among rural and urban adults with rare diseases, respectively. METHODS: A cross-sectional study at national level was conducted in a study sample of 1,150 adult patients in China. Migration was defined as being away from one's original place of residence for at least 12 months. Patients who remained in their place of residence in the past 12 months ("resident") were treated as a comparison group for "migrants". Original area of residence (rural vs. urban) for both residents and migrants was used for comparison. The brief version of the World Health Organization Quality of Life instrument was used to measure QoL. Multiple linear regression analyses were adopted to assess the direct association between migration status and QoL after controlling for the confounders that affect QoL. The indirect associations between migration status and QoL, mediated by potential mediators including number of family members living together, individual income, catastrophic health expenditure, and social support, were estimated using the mediation model. RESULTS: Among the group of rural participants, migration was directly associated with physical QoL (β = 5.07, 95% CI 2.01-8.13) and environmental QoL (3.95, 1.37-6.53), indirectly associated with physical QoL (0.58, 0.05-1.28) and social QoL (0.50, 0.01-1.16) via individual income, and also indirectly associated with environmental QoL (-0.47, -1.12 to -0.50) via tangible support. On the other hand, neither direct nor indirect associations of migration with four domain scores of QoL were significant among the group of urban participants. CONCLUSION: Among rural adults with rare diseases, migration was found to have positive direct effect on physical and environmental QoL, positive indirect effect on physical and social QoL through increased individual income, and negative indirect effect on environmental QoL via reduced tangible support. By contrast, neither direct nor indirect associations of migration with QoL were significant among the group of urban participants.
The Ring Produced by an Extra-Galactic Superbubble in Flat Cosmology
Creators: name: Zaninetti, L.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A superbubble which advances in a symmetric Navarro--Frenk--White density profile or in an auto-gravitating density profile generates a thick shell with a radius that can reach 10 kpc. The application of the symmetric and asymmetric image theory to this thick 3D shell produces a ring in the 2D map of intensity and a characteristic `U' shape in the case of 1D cut of the intensity. A comparison of such a ring originating from a superbubble is made with the Einstein's ring. A Taylor approximation of order 10 for the angular diameter distance is derived in order to deal with high values of the redshift.
description: 22 pages , 16 figures
Room temperature line lists for CO\2 symmetric isotopologues with \textit{ab initio} computed intensities
Creators: name: Zak, Emil J.
name: Tennyson, Jonathan
name: Polyansky, Oleg L.
name: Lodi, Lorenzo
name: Zobov, Nikolay F.
name: Tashkun, Sergei A.
name: Perevalov, Valery I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Remote sensing experiments require high-accuracy, preferably sub-percent, line intensities and in response to this need we present computed room temperature line lists for six symmetric isotopologues of carbon dioxide: $^{13}$C$^{16}$O$_2$, $^{14}$C$^{16}$O$_2$, $^{12}$C$^{17}$O$_2$, $^{12}$C$^{18}$O$_2$, $^{13}$C$^{17}$O$_2$ and $^{13}$C$^{18}$O$_2$, covering the range 0-8000 \cm. Our calculation scheme is based on variational nuclear motion calculations and on a reliability analysis of the generated line intensities. Rotation-vibration wavefunctions and energy levels are computed using the DVR3D software suite and a high quality semi-empirical potential energy surface (PES), followed by computation of intensities using an \abinitio\ dipole moment surface (DMS). Four line lists are computed for each isotopologue to quantify sensitivity to minor distortions of the PES/DMS. Reliable lines are benchmarked against recent state-of-the-art measurements and against the HITRAN2012 database, supporting the claim that the majority of line intensities for strong bands are predicted with sub-percent accuracy. Accurate line positions are generated using an effective Hamiltonian. We recommend the use of these line lists for future remote sensing studies and their inclusion in databases.
Critical phenomena and chemical potential of charged AdS black hole
Creators: name: Wei, Shao-Wen
name: Liang, Bin
name: Liu, Yu-Xiao
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the thermodynamics and the chemical potential for a five-dimensional charged AdS black hole by treating the cosmological constant as the number of colors $N$ in the boundary gauge theory and its conjugate quantity as the associated chemical potential $μ$. It is found that there exists a small-large black hole phase transition. The critical phenomena are investigated in the $N^{2}$-$μ$ chart. In particular, in the reduced parameter space, all the thermodynamic quantities can be rescaled with the black hole charge such that these reduced quantities are charge-independent. Then we obtain the coexistence curve and the phase diagram. The latent heat is also numerically calculated. Moreover, the heat capacity and the thermodynamic scalar are studied. The result indicates that the information of the first-order black hole phase transition is encoded in the heat capacity and scalar. However, the phase transition point cannot be directly calculated with them. Nevertheless, the critical point linked to a second-order phase transition can be determined by either the heat capacity or the scalar. In addition, we calculate the critical exponents of the heat capacity and the scalar for the saturated small and large black holes near the critical point.
description: 17 pages, 17 figures
Participation Survey, 2021–2022: Secure Access
Participation Survey, 2021-
Creators: name: Department For Digital, Culture
Publisher: name: UK Data Service
Year: 2022

description:
The Participation Survey is a continuous push-to-web survey of adults aged 16 and over in England. It serves as a successor to the Taking Part survey, which ran for 16 years as a continuous face to face survey. Paper surveys are available for those not digitally engaged. Fieldwork started in October 2021 and it is envisaged that the survey will be a key evidence source for Department for Digital, Culture, Media and Sport (DCMS) and its sectors by providing statistically representative national estimates of adult engagement with the DCMS sectors. The survey’s main objectives are to:

Provide a central, reliable evidence source that can be used to analyse cultural, digital, and sporting engagement, providing a clear picture of why people do or do not engage.

Provide data at a county level to meet user needs, including providing evidence for the levelling up agenda.

Underpin further research on driving engagement and the value and benefits of engagement.

Further information on the survey can be found on the gov.uk Participation Survey webpage.

Three versions of the Participation Survey 2021-2022 are available:

An open access version (SN 9013). This version is freely available to download and does not require UK Data Service registration. 

A safeguarded dataset (SN 9012), which includes some additional detail. It is only available to registered UKDS users who have agreed to abide by the conditions of the End User Licence. 

This Secure Access version (SN 9014), which contains further detailed information. Access to this version is very restricted and requires UKDS registration, completion of an extensive application form, approval from the depositor, and successful completion of a Safe Researcher Training course before access can be granted. Users are advised to first download the safeguarded version (SN 9012) to check whether it includes sufficient detail for their research, before considering making an application for the Secure Access version.

Details of all variables available for the version concerned can be found in the UKDS Data Dictionary - see the Documentation section.
Great Britain Historical Database: Census Data: Industry Statistics, 1931, 1951 and 1971
Great Britain Historical Database, 1801-1992
GBHD
Creators: name: Southall, H. R.
Publisher: name: UK Data Service
Year: 2022

description:
The Great Britain Historical Database has been assembled as part of the ongoing Great Britain Historical GIS Project. The project aims to trace the emergence of the north-south divide in Britain and to provide a synoptic view of the human geography of Britain at sub-county scales. Further information about the project is available on A Vision of Britain webpages, where users can browse the database's documentation system online.

These data were originally collected by the Censuses of Population for England and Wales, and for Scotland. They were computerised by the Great Britain Historical GIS Project. 

The 19th century censuses gathered data only on "occupations", meaning individuals' roles in the workplace, but the changing nature of work created a need for separate counts by "employer's business". The first such industry statistics resulted from the 1911 census, but the first data included here are from 1931. The 1931 data, unlike the later data, are tabulated by place of residence, as data on journeys to work were not gathered by that census.
Supplemental Information from Role of turgor-pressure induced boundary tension in the maintenance of the shoot apical meristem of Arabidopsis thaliana
Creators: name: Michael, Christian
name: Banwarth-Kuhn, Mikahl
name: Rodriguez, Kevin
name: Ta, Calvin-Khang
name: Roy-Chowdhury, Amit
name: Chen, Weitao
name: Venugopala Reddy, G.
name: Alber, Mark
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: 110601 Biomechanics
subject: FOS: Health sciences
subject: Computational Biology
subject: 10202 Biological Mathematics
subject: FOS: Mathematics

description: Extended model description, experimental methods, and image analysis methods.
A family of Finch and Skea relativistic stars
Creators: name: Maharaj, S. D.
name: Matondo, D. Kileba
name: Takisa, P. Mafa
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Several new families of exact solution to the Einstein-Maxwell system of differential equations are found for anisotropic charged matter. The spacetime geometry is that of Finch and Skea which satisfies all criteria for physical acceptability. The exact solutions can be expressed in terms of elementary functions, Bessel functions and modified Bessel functions. When a parameter is restricted to be an integer then the special functions reduce to simple elementary functions. The uncharged model of Finch and Skea (Class. Quantum Grav. 6, 467 (1989)) and the charged model of Hansraj and Maharaj (Int. J. Mod. Phys. D 8, 1311 (2006)) are regained as special cases. The solutions found admit a barotropic equation of state. A graphical analysis indicates that the matter and electric quantities are well behaved.
description: 27 pages, submitted for publication
Parallel transport in principal 2-bundles
Creators: name: Waldorf, Konrad
Publisher: name: arXiv
Year: 2017
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: A nice differential-geometric framework for (non-abelian) higher gauge theory is provided by principal 2-bundles, i.e. categorified principal bundles. Their total spaces are Lie groupoids, local trivializations are kinds of Morita equivalences, and connections are Lie-2-algebra-valued 1-forms. In this article, we construct explicitly the parallel transport of a connection on a principal 2-bundle. Parallel transport along a path is a Morita equivalence between the fibres over the end points, and parallel transport along a surface is an intertwiner between Morita equivalences. We prove that our constructions fit into the general axiomatic framework for categorified parallel transport and surface holonomy.
description: 60 pages
Derivative Expansion of Wave Function Equivalent Potentials
Creators: name: Sugiura, Takuya
name: Ishii, Noriyoshi
name: Oka, Makoto
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Properties of the wave function equivalent potentials introduced by HAL QCD collaboration are studied in a non-relativistic coupled-channel model. The derivative expansion is generalized, and then applied to the energy-independent and non-local potentials. The expansion coefficients are determined from analytic solutions to the Nambu-Bethe-Salpeter wave functions. The scattering phase shifts computed from these potentials are compared with the exact values to examine the convergence of the expansion. It is confirmed that the generalized derivative expansion converges in terms of the scattering phase shift rather than the functional structure of the non-local potentials. It is also found that the convergence can be improved by tuning either the choice of interpolating fields or expansion scale in the generalized derivative expansion.
description: 16 pages, 17 figures
Towards superfluidity of dipolar excitons in a TMDC double layer
Creators: name: Berman, Oleg L.
name: Kezerashvili, Roman Ya.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study formation and superfluidity of dipolar excitons in double layer heterostructures formed by two transition metal dichalcogenide (TMDC) atomically thin layers. Considering screening effects for an electron-hole interaction via the harmonic oscillator approximation for the Keldysh potential, the analytical expressions for the exciton energy spectrum and the mean field critical temperature $T_{c}$ for the superfluidity are obtained. It is shown that binding energies of A excitons are larger than for B excitons. The mean field critical temperature for a two-component dilute exciton system in a TMDC double layer is analyzed and shown that latter is an increasing function of the factor $Q$, determined by the effective masses of A and B excitons and their reduced mass. Comparison of the calculations for $T_{c}$ performed by employing the Coulomb and Keldysh interactions demonstrates the importance of screening effects in TMDC.
description: 14 pages, 5 figures
Anisotropic charged core envelope star
Creators: name: Takisa, P. Mafa
name: Maharaj, S. D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study a charged compact object with anisotropic pressures in a core envelope setting. The equation of state is quadratic in the core and linear in the envelope. There is smooth matching between the three regions: the core, envelope and the Reissner-Nordström exterior. We show that the presence of the electric field affects the masses, radii and compactification factors of stellar objects with values which are in agreement with previous studies. We investigate in particular the effect of electric field on the physical features of the pulsar PSR J1614-2230 in the core envelope model. The gravitational potentials and the matter variables are well behaved within the stellar object. We demonstrate that the radius of the core and the envelope can vary by changing the parameters in the speed of sound.
description: 11 pages, submitted for publication
Great Britain Historical Database: Age- and Cause-Specific Mortality in England and Wales at District-Level, 1851-1910
GBHD
Creators: name: Southall, H. R.
name: Woods, R.
name: Shelton, N.
name: Gatley, D. Alan
Publisher: name: UK Data Service
Year: 2022

description:
This study comprises a complete transcription of all the district-level tables which are the main contents of each of the Registrar-General for England and Wales Decennial Supplements from 1851-60 to 1901-10; these are supplements to the 25th, 35th, 45th, 55th, 65th and 75th Annual Reports.

The reports for 1851-1900 were computerised by a project led by Professor Robert Woods of Liverpool University, creating a large set of spreadsheets, one for each district in each decade. These were assembled into a single large file by the Great Britain Historical GIS, working in collaboration with Hamish James of the UK Data Archive. The GBHGIS team computerised the 1901-10 report, checked all data against the original reports, and added identifiers linking the districts to the digital boundary data they had created.

For each district in each decade, the reports cross-tabulate causes of death against age. In some decades, there are separate tables for each district for males and females, and the causes of death vary between decades. There were c. 630 districts, the exact number varying by decade.
Great Britain Historical Database: Vital Statistics for England and Wales 1911-1973
GBHD
Creators: name: Southall, H. R.
name: Mooney, G.
Publisher: name: UK Data Service
Year: 2022

description:
This data was originally published in the reports of the Registrar-General for England and Wales. It was computerised by the Great Britain Historical GIS Project and its collaborators. It forms part of the Great Britain Historical Database, which contains a wide range of geographically-located statistics, selected to trace the emergence of the north-south divide in Britain and to provide a synoptic view of the human geography of Britain, generally at sub-county scales.

In this period, 1911 to 1973, the main reporting units were over 1,500 local government districts, as compared to c. 600 Registration Districts pre-1911. As a result, most tabulations provide data only for the larger urban units, plus aggregates covering all Rural Districts and all other urban units in each county. This study centers on the main exception to this, an annual table providing counts of all births, all deaths and all infant deaths in all districts, appearing in the Registrar-General's Annual Reports from 1911 to 1920, then in the RG's Statistical Reviews from 1921 to 1973. Later reports include additional variables. This study also includes more limited transcriptions of causes of death and age-specific mortality.
A quantum correlated twin atom laser from a Bose-Hubbard system
Creators: name: Olsen, M. K.
name: Bradley, A. S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose and evaluate a method to construct a quantum correlated twin atom laser using a pumped and damped Bose-Hubbard inline trimer which can operate in a stationary regime. With pumping via a source condensate filling the middle well and damping using either an electron beam or optical means at the two end wells, we show that bipartite quantum correlations build up between the ends of the chain, and that these can be measured either in situ or in the outcoupled beams. While nothing similar to our system has yet been achieved experimentally, recent advances mean that it should be practically realisable in the near future.
description: 15 pages, 8 figures, theory. Typos fixed and material added to introduction
Fine structure of excitons in InAs quantum dots on GaAs(110) planar layers and nanowire facets
Creators: name: Corfdir, Pierre
name: Lewis, Ryan B.
name: Geelhaar, Lutz
name: Brandt, Oliver
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the optical properties of InAs quantum dots grown by molecular beam epitaxy on GaAs(110) using Bi as a surfactant. The quantum dots are synthesized on planar GaAs(110) substrates as well as on the {110} sidewall facets of GaAs nanowires. At 10 K, neutral excitons confined in these quantum dots give rise to photoluminescence lines between 1.1 and 1.4 eV. Magneto-photoluminescence spectroscopy reveals that for small quantum dots emitting between 1.3 and 1.4 eV, the electron-hole coherence length in and perpendicular to the (110) plane is on the order of 5 and 2 nm, respectively. The quantum dot photoluminescence is linearly polarized, and both binding and antibinding biexcitons are observed, two findings that we associate with the strain in the (110) plane This strain leads to piezoelectric fields and to a strong mixing between heavy and light hole states, and offers the possibility to tune the degree of linear polarization of the exciton photoluminescence as well as the sign of the binding energy of biexcitons.
Doping effects on trimerization and magnetoelectric coupling of single crystal multiferroic (Y,Lu)MnO3
Creators: name: Choi, Seongil
name: Sim, Hasung
name: Kang, Sunmin
name: Choi, Ki-Young
name: Park, Je-Geun
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hexagonal RMnO3 is a multiferroic compound with a giant spin-lattice coupling at an antiferromagnetic transition temperature [1]. Despite extensive studies over the past two decades, however, the origin and underlying microscopic mechanism of the strong spin-lattice coupling remain still very much elusive. In this study, we have tried to address this problem by measuring the thermal expansion and dielectric constant of doped single crystals Y1-xLuxMnO3 with x = 0, 0.25, 0.5, 0.75, and 1.0. From these measurements, we confirm that there is a progressive change in the physical properties with doping. At the same time, all our samples exhibit clear anomalies at TN, even in the samples with x = 0.5 and 0.75 as opposed to some earlier ideas, which suggests an unusual doping dependence of the anomaly. Our work reveals yet another interesting facet of the spin lattice coupling issue in hexagonal RMnO3.
description: 11 pages, 5 figures
Submillimetre galaxies in two massive protoclusters at z = 2.24: witnessing the enrichment of extreme starbursts in the outskirts of HAE density peaks
Creators: name: Zhang, Yuheng
Publisher: name: Zenodo
Year: 2023

description: Submillimetre galaxies represent a rapid growth phase of both star formation and massive galaxies. Mapping SMGs in galaxy protoclusters provides key insights into where and how these extreme starbursts take place in connections with the assembly of the large-scale structure in the early Universe. We search for SMGs at 850 μ m using JCMT/SCUBA-2 in two massive protoclusters at z = 2.24, BOSS1244 and BOSS1542, and detect 43 and 54 sources with S 850 > 4 mJy at the 4σ level within an effective area of 264 arcmin 2 , respectively. We construct the intrinsic number counts and find that the abundance of SMGs is 2.0 ± 0.3 and 2.1 ± 0.2 times that of the general fields, confirming that BOSS1244 and BOSS1542 contain a higher fraction of dusty galaxies with strongly enhanced star formation. The volume densities of the SMGs are estimated to be ∼15–30 times the average, significantly higher than the overdensity factor (∼6) traced by H α emission-line galaxies (HAEs). More importantly, we discover a prominent offset between the spatial distributions of the two populations in these two protoclusters – SMGs are mostly located around the high-density regions of HAEs, and few are seen inside these regions. This finding may have revealed for the first time the occurrence of violent star formation enhancement in the outskirts of the HAE density peaks, likely driven by the boosting of gas supplies and/or starburst triggering events. Meanwhile, the lack of SMGs inside the most overdense regions at z ∼ 2 implies a transition to the environment disfavouring extreme starbursts.
Three-dimensional abundance distributions in ApBp star atmospheres: non-axisymmetric magnetic geometry
Creators: name: Alecian, G.
name: Stift, M. J.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Numerical models for the atmospheres of magnetic ApBp stars have in the past dealt only with centred dipole magnetic field geometries. These models include atomic diffusion that stratifies the abundances of metals according to the local magnetic field strength and the direction with respect to the surface normal. The magnetic variations with rotational phase of most well observed stars however reveal that this assumption is far too simplistic. In this work we establish for the first time a three-dimensional (3D) model with abundance stratifications arising from atomic diffusion of 16 metals, adopting a non-axisymmetric magnetic field geometry inspired by the configuration derived for a real ApBp star. We find that the chemical elements are distributed in complex patterns in all three dimensions, far from the simple rings that have been proposed as the dominant abundance structures from calculations that assume a perfectly centred dipolar magnetic geometry
description: 6 pages, 4 figures, MNRAS in press. Accepted 2017 February 23
Η επίδραση της τηλεργασίας στην εργασιακή ικανοποίηση, την εργασιακή απόδοση και την επαγγελματική εξουθένωση του εργαζομένου
Creators: name: Στράτου, Νικολέτα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Τηλεργασία
Εργασιακή ικανοποίηση
Εργασιακή απόδοση
Επαγγελματική εξουθένωση
Telework
Job Satisfaction
Job Performance
4. Burnout

description: Η παρούσα διπλωματική εργασία στοχεύει στη διερεύνηση της επίδρασης της τηλεργασίας στους εργαζόμενους, καθώς από την πανδημία του COVID-19 κι έπειτα έχει υιοθετηθεί από πολλές ελληνικές επιχειρήσεις ως νέος τρόπος εργασίας. Συγκεκριμένα, εξετάζει κατά πόσο η εξ αποστάσεως εργασία έχει αντίκτυπο στην εργασιακή ικανοποίηση, την εργασιακή απόδοση και την επαγγελματική εξουθένωση των Ελλήνων εργαζομένων. Με τη συμβολή της διεθνούς βιβλιογραφίας, αναλύονται πρώτα σε θεωρητικό επίπεδο οι παραπάνω μεταβλητές και υπογραμμίζονται τα οφέλη και τα εμπόδια της τηλεργασίας, ενώ στη συνέχεια κατασκευάζονται οι ερευνητικές υποθέσεις για την εκτίμηση των συσχετίσεων. Για την υλοποίηση του ερευνητικού μέρους της εργασίας συντάχθηκε ένα ερωτηματολόγιο το οποίο διαμοιράστηκε μέσω διαδικτύου συγκεντρώνοντας 140 συμμετέχοντες (Ν=140). Τα ευρήματα της εργασίας συμφωνούν με τις υποθέσεις που διατυπώθηκαν, καταδεικνύοντας πως η τηλεργασία επηρεάζει θετικά την εργασιακή ικανοποίηση και την εργασιακή απόδοση του εργαζομένου, ενώ υπάρχει αρνητική σχέση με την επαγγελματική εξουθένωση. Συμπερασματικά, όταν ο εργαζόμενος εκτελεί την εργασία του εξ αποστάσεως αισθάνεται πιο ικανοποιημένος από την εργασία του και αποδίδει καλύτερα, ενώ παράλληλα μειώνονται τα επίπεδα εξουθένωσης
description: The present thesis aims to investigate the effect of telework on employees, as, since the COVID-19 pandemic it has been adopted by many Greek companies as a new way of working. Specifically, it is examined whether remote work affects the job satisfaction, the job performance and the burnout of Greek employees. By the contribution of the international bibliography first, the above variables are analyzed at a theoretical level and the benefits and obstacles of telecommuting are highlighted, while the research hypotheses are then constructed in order to evaluate the correlations. For the implementation of the research part of the work, a questionnaire was drawn up which was distributed via the internet, gathering 140 participants (Ν=140). The findings of the research align with the hypotheses formulated, proving that telework affects the employee's job satisfaction and job performance positively, while there is a negative ratio with his burnout. In conclusion, when the employee performs his work remotely he feels more satisfied with his job and performs better, while at the same time the levels of his burnout are reduced
Modal phenomena of surface and bulk polaritons in magnetic-semiconductor superlattices
Creators: name: Tuz, Vladimir R.
name: Fedorin, Illia V.
name: Fesenko, Volodymyr I.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discuss peculiarities of bulk and surface polaritons propagating in a composite magnetic-semiconductor superlattice influenced by an external static magnetic field. Three particular configurations of magnetization, namely the Voigt, polar and Faraday geometries are considered. In the long-wavelength limit, involving the effective medium theory, the proposed superlattice is described as an anisotropic uniform medium defined by the tensors of effective permittivity and effective permeability. The study is carried out in the frequency band where the characteristic resonant frequencies of the underlying constitutive magnetic and semiconductor materials of the superlattice are different but closely spaced. The effects of mode crossing and anti-crossing in dispersion characteristics of both bulk and surface polaritons are revealed and explained with an assistance of the concept of Morse critical points from the catastrophe theory.
description: 13 pages, 7 figures