cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The motion of point particles in curved spacetime
Creators: name: Poisson, Eric
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This review is concerned with the motion of a point scalar charge, a point electric charge, and a point mass in a specified background spacetime. In each of the three cases the particle produces a field that behaves as outgoing radiation in the wave zone, and therefore removes energy from the particle. In the near zone the field acts on the particle and gives rise to a self-force that prevents the particle from moving on a geodesic of the background spacetime. The field's action on the particle is difficult to calculate because of its singular nature: the field diverges at the position of the particle. But it is possible to isolate the field's singular part and show that it exerts no force on the particle -- its only effect is to contribute to the particle's inertia. What remains after subtraction is a smooth field that is fully responsible for the self-force. Because this field satisfies a homogeneous wave equation, it can be thought of as a free (radiative) field that interacts with the particle; it is this interaction that gives rise to the self-force. The mathematical tools required to derive the equations of motion of a point scalar charge, a point electric charge, and a point mass in a specified background spacetime are developed here from scratch. The review begins with a discussion of the basic theory of bitensors (part I). It then applies the theory to the construction of convenient coordinate systems to chart a neighbourhood of the particle's word line (part II). It continues with a thorough discussion of Green's functions in curved spacetime (part III). The review concludes with a detailed derivation of each of the three equations of motion (part IV).
description: LaTeX2e, 116 pages, 10 figures. This is the final version, as it will appear in Living Reviews in Relativity
Strong gravitational lensing of a 4-dimensional Einstein-Gauss-Bonnet black hole in homogeneous plasma
Creators: name: Jin, Xing-Hua
name: Gao, Yuan-Xing
name: Liu, Dao-Jun
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the strong gravitational lensing of spherically symmetric black holes in the novel Einstein-Gauss-Bonnet(EGB) gravity surrounded by unmagnetised plasma medium. The deflection angle in the strong deflection limit in EGB spacetime with homogeneous plasma is derived. We find that both the coupling constant $α$ in the novel EGB gravity and the presence of plasma can affect the radius of photon sphere, strong field limit coefficient and other lensing observables significantly. While plasma has little effect on the angular image separation and the relative magnifications as $α/M^2\to -8$ and $α/M^2\to 1$, respectively.
description: 16 pages, 7 figures; v2: references added, words polished and some typos corrected; v3: version to appear in IJMPD
Additional file 1 of International evidence-based guidelines on Point of Care Ultrasound (POCUS) for critically ill neonates and children issued by the POCUS Working Group of the European Society of Paediatric and Neonatal Intensive Care (ESPNIC)
Creators: name: Yogen Singh
name: Tissot, Cecile
name: MarÃ­A Fraga
name: Yousef, Nadya
name: Cortes, Rafael
name: Lopez, Jorge
name: Sanchez-De-Toledo, Joan
name: Brierley, Joe
name: Colunga, Juan
name: Dusan Raffaj
name: Cruz, Eduardo
name: Durand, Philippe
name: Kenderessy, Peter
name: Hans-Joerg Lang
name: Nishisaki, Akira
name: Kneyber, Martin
name: Tissieres, Pierre
name: Conlon, Thomas
name: Luca, Daniele De
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1. Online supplementary material.
Mean-field dynamics of sequence processing neural networks with finite connectivity
Creators: name: Theumann, W. K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A recent dynamic mean-field theory for sequence processing in fully connected neural networks of Hopfield-type (During, Coolen and Sherrington, 1998) is extended and analized here for a symmetrically diluted network with finite connectivity near saturation. Equations for the dynamics and the stationary states are obtained for the macroscopic observables and the precise equivalence is established with the single-pattern retrieval problem in a layered feed-forward network with finite connectivity.
description: 16 pages Latex
Food System Proposal and Strategies in Apec
Creators: name: Eor, Myongkeu
name: Oh, Seik
name: Eor, Myongkeu
name: Oh, Seik
Publisher: name: Unknown
Year: 2003
Subjects: Food Security and Poverty

description: This study tried to both enlighten the background and intrinsic perspectives of the APEC food system and provide logical bases for food importing members. Since food exporting member economies were persistent to insert trade issues into the agenda of ATCWG, a strategic approach to the AFS issue in the ATCWG is required for importing economies. Implementation of the AFS would destroy many trade barriers in food importing countries. According to the APEC principles of voluntarism and flexibility, food importing members can minimize the impact of trade liberalization on domestic food and agricultural production. At the same time, they should emphasize that there are other mechanisms dealing with food trade issues both inside and outside the ATCWG. Importing members also should persuade the exporting members to expand their exports but not to dominate the market.
A hydrodynamical study of outflows in starburst galaxies with different driving mechanisms
Creators: name: Yu, B. P. Brian
name: Owen, Ellis R.
name: Wu, Kinwah
name: Ferreras, Ignacio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Outflows from starburst galaxies can be driven by thermal pressure, radiation and cosmic rays. We present an analytic phenomenological model that accounts for these contributions simultaneously to investigate their effects on the hydrodynamical properties of outflows. We assess the impact of energy injection, wind opacity, magnetic field strength and the mass of the host galaxy on flow velocity, temperature, density and pressure profiles. For an M82-like wind, a thermally-dominated driving mechanism is found to deliver the fastest and hottest wind. Radiation-driven winds in typical starburst-galaxy configurations are unable to attain the higher flow velocities and temperatures associated with thermal and cosmic ray-driven systems, leading to higher wind densities which would be more susceptible to cooling and fragmentation at lower altitudes. High opacity winds are more sensitive to radiative driving, but terminal flow velocities are still lower than those achieved by other driving mechanisms at realistic opacities. We demonstrate that variations in the outflow magnetic field can influence its coupling with cosmic rays, where stronger fields enable greater streaming but less driving near the base of the flow, instead with cosmic rays redirecting their driving impact to higher altitudes. The gravitational potential is less important in M82-like wind configurations, and substantial variations in the flow profiles only emerge at high altitude in massive haloes. This model offers a more generalised approach to examine the large scale hydrodynamical properties for a wide variety of starburst galaxies.
description: 16 pages, 9 figures, 3 tables, accepted for publication in MNRAS
Absence of the d-Density Wave State in 2D Hubbard Model
Creators: name: Macridin, Alexandru
name: Jarrell, Mark
name: Maier, Thomas
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Using the Dynamical Cluster Approximation (DCA) we calculate the alternating circulating-current susceptibility and investigate the transition to the d-density wave (DDW) order in the two-dimensional Hubbard model. The 2 x 2 cluster used in the DCA calculation is the smallest that can capture d-wave order; therefore, due to the mean-field character of our calculation, we expect to overestimate d-wave transition temperatures. Despite this, we found no transition to the DDW state. In the pseudogap region the DDW susceptibility is enhanced, as predicted by the slave boson SU(2) theory, but it still is much smaller than the d-wave pairing susceptibility.
Additional file 1 of Comparison of knowledge, attitude, and practices of animal and human brucellosis between nomadic pastoralists and non-pastoralists in Kenya
Creators: name: M. Njenga
name: Ogolla, Eric
name: Thumbi, Samuel
name: Ngere, Isaac
name: Omulo, Sylvia
name: Muturi, Mathew
name: Marwanga, Doris
name: Austine Bitek
name: Bett, Bernard
name: Marc-Alain Widdowson
name: Munyua, Peninah
name: Osoro, Eric
Publisher: name: figshare
Year: 2020
Subjects: subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Marine Biology
subject: Science Policy

description: Additional file 1. STROBE Checklist.
Visualisation of two-dimensional kinematic data from bimanual control of a commercial gaming system used in post-stroke rehabilitation
Creators: name: Valdés, Bulmaro A.
name: Shirzad, Navid
name: Hung, Chai-Ting
name: Glegg, Stephanie
name: Reeds, Erin
name: Van Der Loos, H. F. Machiel
Publisher: name: The University of British Columbia
Year: 2015

description: Kinematic data from two stroke participants and a healthy control were collected using a novel bimanual rehabilitation system. The system employs two customized PlayStation Move Controllers and an Eye camera to track the participants’ hand movements. In this study, the participants played a Facebook game by symmetrically moving both hands to control the computer’s mouse cursor. The collected data were recorded during one game session, and movement distribution analysis was performed to create density plots of each participant’s hand motion in the XY plane. This type of kinematic information that can be gathered by rehabilitation systems with motion tracking capabilities has the potential to be used by therapists to monitor and guide home-based rehabilitation programs.
The Proper Motion of Sagittarius A*: III. The Case for a Supermassive Black Hole
Creators: name: Reid, M. J.
name: Brunthaler, A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report measurements with the Very Long Baseline Array of the proper motion of Sgr A* relative to two extragalactic radio sources spanning 18 years. The apparent motion of Sgr A* is -6.411 +/- 0.008 mas/yr along the Galactic plane and -0.219 +/- 0.007 mas/yr toward the North Galactic Pole. This apparent motion can almost entirely be attributed to the effects of the Sun's orbit about the Galactic center. Removing these effects yields residuals of -0.58 +/- 2.23 km/s in the direction of Galactic rotation and -0.85 +/- 0.75 km/s toward the North Galactic Pole. A maximum-likelihood analysis of the motion, both in the Galactic plane and perpendicular to it, expected for a massive object within the Galactic center stellar cluster indicates that the radiative source, Sgr A*, contains more than about 25% of the gravitational mass of 4 x 10^6 Msun deduced from stellar orbits. The intrinsic size of Sgr A* is comparable to its Schwarzschild radius, and the implied mass density of >4 x 10^23 Msun/pc^-3 very close to that expected for a black hole, providing overwhelming evidence that it is indeed a super-massive black hole. Finally, the existence of "intermediate-mass" black holes more massive than 3 x 10^4 Msun between approximately 0.003 and 0.1 pc from Sgr A*are excluded.
description: 19 pages, 4 figures and 4 tables
Superscattering from subwavelength corrugated cylinders
Creators: name: Shcherbinin, Vitalii I.
name: Fesenko, Volodymyr I.
name: Tkachova, Tetiana I.
name: Tuz, Vladimir R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applied Physics (physics.app-ph)
subject: Classical Physics (physics.class-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Wave scattering from a cylinder with a tensor impedance surface is investigated based on the Lorentz-Mie theory. A practical example of such a cylinder is a subwavelength metallic rod with helical dielectric-filled corrugations. The investigation is performed with the aim to maximize scattering cross-section by tailoring the surface impedance of cylindrical scatterers. For the normally incident TEz and TMz waves the required surface impedance of a subwavelength cylinder can be produced by longitudinal (axial) and transverse (circumferential) corrugations, respectively. It is shown that such corrugations induce superscattering at multiple frequencies, which can be widely tuned with either or both the size and permittivity of dielectric-filled corrugations. In the microwave band, this effect is demonstrated to be robust to material losses and is validated against the full-wave simulations and experiment. For the TEz waves the enhanced scattering from the cylinder is found to have a broad frequency bandwidth, provided that the relative permittivity of corrugations is low or equal unity. In the latter case, the corrugated cylinder acts as an all-metal superscatterer. For such cylinders the near-field measurements are implemented and provide the first experimental evidence of the superscattering phenomenon for all-metal objects. In addition to multifrequency superscattering, the dielectric-filled corrugations are shown to provide multifrequency cloaking of the cylinder under the incidence of the TMz waves. Simultaneous superscattering and cloaking at multiple frequencies distinguishes corrugated cylinders from other known practicable scatterers for potential applications in antenna designing, sensing, and energy harvesting.
description: 12 pages, 6 figures
Service user experiences of mental health assessments: a systematic review and thematic synthesis of qualitative literature
Creators: name: Patel, Paras
name: Kennedy, Angela
name: Carr, Sarah
name: Gillard, Steve
name: Harris, Poppy
name: Sweeney, Angela
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Mental Health

description: Successive governments have placed service users’ experiences at the heart of mental health services delivery and development. However, little is known about service users’ experiences of assessments and there is some evidence that assessments can cause harm. To synthesise the qualitative literature on service users’ experiences of undergoing mental health service assessments. Literature was systematically searched, screened and extracted, following PRISMA guidelines. Several search strategies were employed, including electronic database searches, handsearching, and forward and backward citation tracking, to identify literature which contained data on service users’ experiences of mental health assessments. Thematic synthesis was used to derive a set of themes underpinning these experiences. Of the 10,137 references screened, 47 were identified as relevant to the review. Two main themes were identified: the importance of humanising assessment processes and experiences of service user agency, with each theme containing four sub-themes. Findings highlight key factors determining service user experience. We identify key practice implications, contextualised within the literature on trauma-informed approaches and conclude that trauma-informed approaches may aid understanding and improvement of people’s assessment experiences. Further research into the experiences of people from Black and minority ethnic communities is indicated.
What does recovery mean to Jordanian mental health service users and their families? A descriptive qualitative study
Creators: name: Abu-Mahfouz, Mohammad S.
name: Weller, Gordon
name: Clarke, Lisa
name: Thom, Betsy
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Mental Health

description: The concept of recovery in mental health has been extensively documented in the Western context. Yet, little is known about this concept in the Arab context, particularly in Jordan. The aim of this study was to explore the conceptuality of recovery in mental health from the perspectives of both Jordanian service users and their families. A qualitative descriptive design was used, and semi structured interviews were conducted with 16 service users and 16 family members, selected from three different mental health sectors in Jordan: Government, Military and University Sectors. The data were transcribed verbatim, translated into English, and then analyzed using an inductive thematic analysis approach. Three main themes were identified as a result of the qualitative data analysis: (1) the definition of recovery implies functional recovery, (2) the definition of recovery implies symptomatic recovery, and (3) the definition of recovery from a religious perspective. The findings of the present study shed light on how recovery in mental health is perceived by service users and their families in the Jordanian context, and they generate insight into what to consider when targeting the development and implementation of recovery-supporting care within the mental health services (MHSs) in Jordan.
Variational principles for involutive systems of vector fields
Creators: name: Gaeta, G.
name: Morando, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 58A15 ; 58A30

description: In many relevant cases -- e.g., in hamiltonian dynamics -- a given vector field can be characterized by means of a variational principle based on a one-form. We discuss how a vector field on a manifold can also be characterized in a similar way by means of an higher order variational principle, and how this extends to involutive systems of vector fields.
description: 31 pages. To appear in International Journal of Geometric Methods in Modern Physics (IJGMMP)
Decoherence-Free Quantum Information Processing with Four-Photon Entangled States
Creators: name: Bourennane, Mohamed
name: Eibl, Manfred
name: Gaertner, Sascha
name: Kurtsiefer, Christian
name: Cabello, Adan
name: Weinfurter, Harald
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Decoherence-free states protect quantum information from collective noise, the predominant cause of decoherence in current implementations of quantum communication and computation. Here we demonstrate that spontaneous parametric down-conversion can be used to generate four-photon states which enable the encoding of one qubit in a decoherence-free subspace. The immunity against noise is verified by quantum state tomography of the encoded qubit. We show that particular states of the encoded qubit can be distinguished by local measurements on the four photons only.
description: 4 pages, 4 eps figures, revtex4
Measuring technical efficiency of wheat farmers in Egypt
Creators: name: Croppenstedt, André
name: Croppenstedt, André
Publisher: name: Unknown
Year: 2005
Subjects: Farm Management
Agricultural and Food Policy

description: Liberalization of Egyptian agricultural policy and new wheat technology has led to significant increases in area allocated to wheat as well as wheat yields. The wheat self-sufficiency ratio increased from 21 percent in 1986 to about 59 percent over the 2001-03 period. However, the country still imports 4-5 million tonnes of wheat per year. This paper addresses the issue of what kind of output gains can be achieved from improving technical efficiency, i.e. how much more output can be produced with the given levels of inputs and current technology. On average wheat farmers are found to operate 20 percent below the potential output. Better information on irrigation management and two or more extension visits were found to raise output by 14 and 7 percent respectively. However, neither factor was found to affect technical efficiency. Technical efficiency was found not to vary with farm size.
description: FAO Document Repository: http://www.fao.org/3/a-ae880t.pdf
Automated Isolation for White-box Test Generation
Creators: name: Honfi, Dávid
name: Micskei, Zoltán
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context. White-box test generation is a technique used for automatically selecting test inputs using only the source or binary code. However, such techniques encounter challenges when applying them to complex programs. One of the main challenges is handling the dependencies of the unit under test. Objective. Without proper actions, generated tests cannot cover all parts of the source code, or calling the dependencies may cause unexpected side effects (e.g., file system or network access). These issues should be tackled while maintaining the advantages of white-box test generation. Method. In this paper, we present an automated source code transformation approach tackling the dependency issue for white-box test generation. This technique isolates the test execution by creating a parameterized sandbox wrapped around the transformed unit. We implemented the approach in a ready-to-use tool using Microsoft Pex as a test generator, and evaluated it on 10 open-source projects from GitHub having more than 38.000 lines of code in total. Results. The results from the evaluation indicate that if the lack of isolation hinders white-box test generation, then our approach is able to help: it increases the code coverage reached by the automatically generated test, while it reduces unwanted side effects. Also, our results act as a unique baseline for the test generation performance of Microsoft Pex on open-source projects. Conclusion. Based on the results, our source code transformations might serve well for alleviating the isolation problem in white-box test generation as it increases the coverage reached in such situations, while maintaining the practical applicability of the tests generated on the isolated code.
Natural Orbitals and BEC in traps, a diffusion Monte Carlo analysis
Creators: name: DuBois, Jonathan L.
name: Glyde, Henry R.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the properties of hard core Bosons in harmonic traps over a wide range of densities. Bose-Einstein condensation is formulated using the one-body Density Matrix (OBDM) which is equally valid at low and high densities. The OBDM is calculated using diffusion Monte Carlo methods and it is diagonalized to obtain the "natural" single particle orbitals and their occupation, including the condensate fraction. At low Boson density, $na^3 < 10^{-5}$, where $n = N/V$ and $a$ is the hard core diameter, the condensate is localized at the center of the trap. As $na^3$ increases, the condensate moves to the edges of the trap. At high density it is localized at the edges of the trap. At $na^3 \leq 10^{-4}$ the Gross-Pitaevskii theory of the condensate describes the whole system within 1%. At $na^3 \approx 10^{-3}$ corrections are 3% to the GP energy but 30% to the Bogoliubov prediction of the condensate depletion. At $na^3 \gtrsim 10^{-2}$, mean field theory fails. At $na^3 \gtrsim 0.1$, the Bosons behave more like a liquid $^4$He droplet than a trapped Boson gas.
description: 13 pages, 14 figures, submitted Phys. Rev. A
Stigma perpetuation at the interface of mental health care: a review to compare patient and clinician perspectives of stigma and borderline personality disorder
Creators: name: Ring, Daniel
name: Lawn, Sharon
Publisher: name: Taylor & Francis
Year: 2019
Subjects: Biotechnology
Cancer
Science Policy
Mental Health

description: Background: People with borderline personality disorder (BPD) experience significant stigma, particularly at the interface of care delivery. Aims: To compare and contrast what stigma looks like within mental health care contexts, from the perspective of patients and mental health professionals (MHPs) and how it is perpetuated at the interface of care. Method: A review of the literature was undertaken to compare the experiences of stigma towards BPD from the patient and MHP perspective by thematically analysing the results from empirical studies exploring their experiences. Results: Thirty studies were found; 12 on patients perspectives and 18 on clinicians perspectives. Six themes arose from the thematic synthesis: (1) stigma related to diagnosis and disclosure; (2) perceived un-treatability; (3) stigma as a response to feeling powerless; (4) stigma due to preconceptions of patients; (5) low BPD health literacy and (6) overcoming stigma through enhanced empathy. A conceptual framework for explaining the perpetuation of stigma and BPD is proposed. Conclusion: Stigma towards people with BPD is perpetuated through poor BPD health literacy by patients and MHPs that stalls effective treatment and engagement, and disempowers all concerned, deferring responsibility to others. Addressing this stigma requires multiple strategies that include more targeted education, advocacy and leadership.
Food aid: a primer
Creators: name: Lowder, Sarah K.
name: Raney, Terri
name: Lowder, Sarah K.
name: Raney, Terri
Publisher: name: Unknown
Year: 2005
Subjects: Food Security and Poverty

description: As an introduction to food aid this paper reviews various definitions of food aid and terminology used by practitioners and academics. It also briefly examines the size of food aid relative to Official Development Assistance, trade and food production in recipient countries and recognizes that in many instances food aid may play an important role in issues related to food security. Lastly, it summarizes actions taken by various international organizations to limit possible trade distortion resulting from food aid.
description: FAO Document Repository: http://www.fao.org/3/a-ae878t.pdf
Additional file 1 of Exploring the influences on menâ€™s engagement with weight loss services: a qualitative study
Creators: name: Elliott, Megan
name: Gillison, Fiona
name: Barnett, Julie
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology

description: Additional file 1. Interview schedule.
Integer cells in convex sets
Creators: name: Vershynin, Roman
Publisher: name: arXiv
Year: 2004
Subjects: subject: Functional Analysis (math.FA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C07, 46B07, 05D05

description: Every convex body K in R^n has a coordinate projection PK that contains at least vol(0.1 K) cells of the integer lattice PZ^n, provided this volume is at least one. Our proof of this counterpart of Minkowski's theorem is based on an extension of the combinatorial density theorem of Sauer, Shelah and Vapnik-Chervonenkis to Z^n. This leads to a new approach to sections of convex bodies. In particular, fundamental results of the asymptotic convex geometry such as the Volume Ratio Theorem and Milman's duality of the diameters admit natural versions for coordinate sections.
description: Historical remarks on the notion of the combinatorial dimension are added. This is a published version in Advances in Mathematics
Copyright History in Review
Creators: name: Cooper, Elena
Publisher: name: Zenodo
Year: 2021

description: This Working Paper is a re-print of reviews of recent scholarly books concerning the history of the laws that we today term ‘intellectual property’ by Elena Cooper published in The Burlington Magazine, Law and History Review, Law, Culture and the Humanities and the Modern Law Review. The first three reviews, concerning the work of Katie Scott (Becoming Property, 2018, Yale University Press), Derek Miller (Copyright and the Value of Performance, 2018, CUP) and Will Slauter (Who Owns the News? 2019, Stanford University Press) chart a change in recent copyright history scholarship - a shift in the focus of copyright history away from books and literary works to other subject matter (visual art, drama and news) – and can be read in conjunction with the accompanying CREATe Working Paper ‘Introduction to Art and Modern Copyright: The Contested Image (CUP, 2018)’ also by Elena Cooper (CREATe Working Paper 2021/4). The final review concerns a collection of essays concerning the history of intellectual property more generally edited by Claudy Op den Kamp and Dan Hunter (A History of Intellectual Property in 50 Objects, 2019, CUP) which examines the history of intellectual property law through the lens of 50 different objects. Taken together, the reviews reveal the depth and breadth of historical work in the field and the richness of historical perspectives as a terrain for future study.
Transient sliding of thin hydrogel films: the role of poroelasticity
Creators: name: Ciapa, Lola
name: Delavoipi\ère, Jessica
name: Tran, Yvette
name: Verneuil, Emilie
name: Chateauminois, Antoine
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We report on the transient frictional response of contacts between a rigid spherical glass probe and a micrometer-thick poly(dimethylacrylamide) hydrogel film grafted onto a glass substrate when a lateral relative motion is applied to the contact initially at rest. From dedicated experiments with \textit{in situ} contact visualization, both the friction force and the contact size are observed to vary well beyond the occurrence of a full sliding condition at the contact interface. Depending on the imposed velocity and on the static contact time before the motion is initiated, either an overshoot or an undershoot in the friction force is observed. These observations are rationalized by considering that the transient is predominantly driven by the flow of water within the stressed hydrogel networks. From the development of a poroelastic contact model using a thin film approximation, we provide a theoretical description of the main features of the transient. We especially justify the experimental observation that the relaxation of friction force $F_t(t)$ toward steady state is uniquely dictated by the time-dependence of the contact radius $a(t)$, independently on the sliding velocity and on the applied normal load.
Additional file 1 of Compliance to spectacle use in children with refractive errors- a systematic review and meta-analysis
Creators: name: Dhirar, Nonita
name: Sankalp Dudeja
name: Duggal, Mona
name: Gupta, Parul
name: Nishant Jaiswal
name: Singh, Meenu
name: Jagat Ram
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy

description: Additional file 1: eTable 1: Quality Assessment tool (modified for the study). eTable 2: Quality assessment of studies selected for the review. eFig.1 Forest plot showing the effect of setting (screening vs clinical care) on the compliance with spectacle use. eFig.2 Forest plot showing the effect of assessment method (interview vs observation) on the compliance with spectacle use. eFig.3 Galbraith plot for statistical heterogeneity amongst studies. eFig 4. Reasons for Non-compliance to spectacle use.
Representation of Female Queer Characters on Contemporary Television: “Queerbaiting” and the “Bury Your Gays” Trope
Creators: name: Πουτιού, Μαρία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Τηλεόραση
Αναπαράσταση των Queer
Αφηγηματικές Τάσεις (Queerbaiting, Bury Your Gays)
Television
Queer Representation
Narrative Tropes (Queerbaiting, Bury Your Gays)

description: According to fans, the “Bury Your Gays” trope and “Queerbaiting” are two tendencies that undermine the positive representation of LGBTQ+ characters in American television. This thesis examines the ways these two tropes have affected the representation of female queer characters in contemporary science-fiction/fantasy shows. Based on a corpus that consists of 40 television shows from 2016 to 2020, the analysis focuses on queer representation by specific networks and the shows’ connection to the two tropes. As it is observed, in most cases, this connection is debatable. However, audiences keep protesting about the excessive use of these two tendencies by participating in online activistic trends. To address this obstacle, Supergirl (2016-present) is examined as a case study. Drawing from the works by Joseph Brennan (2016, 2018), Emma Nordin (2015, 2019), Alexander Doty (2000) and Melanie E.S. Kohnen (2008, 2016), I discuss how fans spot signs that indicate homoeroticism and they “read” them “queerly,” and argue that instead of welcoming these signs as indicators of a potential romantic relationship they turn them into accusations of “queerbaiting”.
description: Σύμφωνα με τους θεατές, τα «Bury Your Gays» και «Queerbaiting» είναι δύο τάσεις που υπονομεύουν τη θετική αναπαράσταση των ΛΟΑΤΚΙ+ χαρακτήρων στην Αμερικανική τηλεόραση. Αυτή η θέση εξετάζει τους τρόπους με τους οποίους αυτές οι δύο τάσεις έχουν επηρεάσει την αναπαράσταση των γυναικείων queer χαρακτήρων σε σύγχρονες σειρές επιστημονικής φαντασίας/φαντασίας. Βασισμένη σε μία λίστα που αποτελείται από 40 τηλεοπτικές σειρές από το 2016 έως το 2020, αυτή η έρευνα επικεντρώνεται στην αναπαράσταση των queer χαρακτήρων από συγκεκριμένα κανάλια, αλλά και τη συσχέτισή τους με τις δύο αυτές τάσεις. Όπως παρατηρείται στην πλειοψηφία των περιπτώσεων, αυτή η συσχέτιση είναι αμφισβητήσιμη. Παρ’ όλα αυτά, το κοινό συνεχίζει να αντιτίθεται στη χρήση τους μέσα από το διαδίκτυο. Για τη εξέταση αυτού του φαινομένου, μελετάται η σειρά «Supergirl” (2016-τώρα). Αντλώντας πληροφορίες από τις δουλειές των Joseph Brennan (2016, 2018), Emma Nordin (2015, 2019), Alexander Doty (2000) και Melanie E.S. Kohnen (2008, 2016), εξετάζω το πώς οι θεατές εντοπίζουν σημάδια που υποδεικνύουν ομοφυλοφιλική συμπεριφορά και τα διαβάζουν με έναν τρόπο “queer”, και ισχυρίζομαι πως αντί να τα ερμηνεύσουν ως ενδείξεις μιας πιθανής υπαρκτής ρομαντικής σχέσης, κατηγορούν τους δημιουργούς πως τα χρησιμοποιούν ως «δόλωμα» για να προσελκύσουν το queer κοινό.
Transaction costs, institutions and smallholder market integration: potato producers in Peru
Creators: name: Maltsoglou, Irini
name: Tanyeri-Abur, Aysen
name: Maltsoglou, Irini
name: Tanyeri-Abur, Aysen
Publisher: name: Unknown
Year: 2005
Subjects: Crop Production/Industries
Farm Management

description: The paper analyses the impacts of transaction costs on the degree of household market integration using survey data collected from smallholder potato farmers located in the Peruvian Andes. The analysis focuses on the impacts of transaction costs differentiated as information, negotiation and monitoring costs. Two proxies are used to measure the degree of market integration of households, namely quantity sold in the market and sales in large markets. The results show that, in addition to transport costs and market prices, information, negotiation and monitoring costs affect market integration. The study reinforces previous results and sheds light on possible policy options to support smallholders in improving their access to national and global markets.
description: FAO Document Repository: http://www.fao.org/3/a-ae876e.pdf
Quantum mechanics of bending of a nonrelativistic charged particle beam by a dipole magnet
Creators: name: Khan, Sameen Ahmed
name: Jagannathan, Ramaswamy
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Quantum mechanics of bending of a nonrelativistic monoenergetic charged particle beam by a dipole magnet is studied in the paraxial approximation. The transfer map for the position and momentum components of a particle of the beam between two transverse planes at different points on the curved optic axis of the system is derived starting with the nonrelativistic Schrödinger equation. It is found that the quantum transfer map contains the classical transfer map as the main part and there are tiny quantum correction terms. The negligibly small quantum corrections explain the remarkable success of classical mechanics in charged particle beam optics.
description: 21 pages
Gravitational F-terms of N=1 Supersymmetric SU(N) Gauge Theories
Creators: name: Ita, Harald
name: Nieder, Harald
name: Oz, Yaron
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use the generalized Konishi anomaly equations and R-symmetry anomaly to compute the exact perturbative and non-perturbative gravitational F-terms of four-dimensional N=1 supersymmetric gauge theories. We formulate the general procedure for computation and consider chiral and non-chiral SU(N) gauge theories.
description: 25 pages, v2: minor changes in section 4, references added
Σύγχρονες τάσεις και προσεγγίσεις της πολιτισμικής/μουσειακής εκπαίδευσης στη νέα ψηφιακή εποχή: H περίπτωση του Μουσείου Βυζαντινού Πολιτισμού στη Θεσσαλονίκη
Creators: name: Ταλαμπίρη, Γενοβέφα Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Πολιτισμική/Μουσειακή Εκπαίδευση
Τεχνολογίες Πληροφορίας και Επικοινωνιών
Μουσείο Βυζαντινού Πολιτισμού Θεσσαλονίκης
Cultural/Museum Education
Information and Communication Technologies
Museum of Byzantine Culture Thessaloniki

description: Η παρούσα διπλωματική πραγματεύεται τις σύγχρονες τάσεις και αντιλήψεις της πολιτισμικής/μουσειακής εκπαίδευσης στη νέα ψηφιακή εποχή και ειδικότερα μελετά την εφαρμογή τους στο Μουσείο Βυζαντινού Πολιτισμού της Θεσσαλονίκης. Αρχικά, γίνεται μια εννοιολογική αναδίφηση ως προς την έννοια της πολιτισμικής και μουσειακής εκπαίδευσης και μια σύντομη ιστορική αναδρομή της τελευταίας, για την διασαφήνιση και τον ορισμό του πλαισίου, μέσα στο οποίο καλούνται οι Τεχνολογίες της Πληροφορίας και των Επικοινωνιών (ΤΠΕ) να διαδραματίσουν σημαντικό ρόλο για τη μουσειακή εμπειρία των επισκεπτών. Στη συνέχεια, παρουσιάζονται εφαρμογές τεχνολογικών εργαλείων που αξιοποιούνται σε μουσεία της Ελλάδας και του εξωτερικού. Παράλληλα, αναλύονται τα οφέλη, αλλά και οι αρνητικές συνέπειες της χρήσης των νέων τεχνολογιών στα μουσεία, όσον αφορά την πολιτισμική/μουσειακή εκπαίδευση του κοινού. Επιπλέον, μελετάται η περίπτωση του Μουσείου Βυζαντινού Πολιτισμού της Θεσσαλονίκης, ως προς τις ΤΠΕ που αξιοποιεί. Τέλος, προτείνονται αλλαγές προς βελτίωση αυτού του μουσείου, αναφορικά με τη χρήση νέων τεχνολογιών.
description: This dissertation deals with the current trends and perceptions of cultural/museum education in the new digital age and in particular studies their application at the museum of Byzantine Culture in Thessaloniki. Initially, there is a conceptual overview of the concept of cultural and museum education and a brief historical overview of the latter, to clarify and define the context in which Information and Communication Technologies (ICT) are called to play an important role in the visitors’ museum experience. Subsequently, applications of technological tools used in Greece and abroad are presented. At the same time, the benefits are analyzed, as well as the negative consequences of the use of new technologies in museums, regarding the visitors’ cultural/museum education. In addition, the case of the Museum of Byzantine Culture of Thessaloniki is studied, in terms of the ICT it utilizes. Finally, changes are suggested to improve this museum, regarding the use of new technologies.
Familiar faces, familiar places: the role of family networks and previous experience for Albanian migrants
Creators: name: Carletto, Calogero
name: Davis, Benjamin
name: Stampini, Marco
name: Carletto, Calogero
name: Davis, Benjamin
name: Stampini, Marco
Publisher: name: Unknown
Year: 2005
Subjects: Labor and Human Capital

description: Using data from the 2003 Albania Panel Survey, the paper sets out to achieve two mainobjectives. First, we fully characterize the evolution of Albanian international migration since the fall of Communism in 1990. We distinguish between permanent and temporary migration, and between the two principal destinations, Greece and Italy. Second, we explore, using multivariate analysis, what individual, household and community level factors influence the current decision to migrate internationally, focusing on the role of previous personal experience and family networks. We find evidence of important changes over time in the pull and push factors that drive migration flows. The results have important policy implications. First, policies aimed at controlling migration are likely to be less effective where networks have already developed or where engrained patterns of repeat migration are established. Second, despite increasing legality, migration, particularly for newcomers, is still difficult, risky and often illegal, which fosters a climate of exploitation and abuse. Third, we find that highly educated individuals have a higher propensity to migrate permanently, which constitutes a serious potential risk in terms of brain drain.
description: FAO Document Repository: http://www.fao.org/3/a-ae592t.pdf
Phase Transitions and Critical Behavior for Charged Black Holes
Creators: name: Carlip, S.
name: Vaidya, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the thermodynamics of a four-dimensional charged black hole in a finite cavity in asymptotically flat and asymptotically de Sitter space. In each case, we find a Hawking-Page-like phase transition between a black hole and a thermal gas very much like the known transition in asymptotically anti-de Sitter space. For a ``supercooled'' black hole--a thermodynamically unstable black hole below the critical temperature for the Hawking-Page phase transition--the phase diagram has a line of first-order phase transitions that terminates in a second order point. For the asymptotically flat case, we calculate the critical exponents at the second order phase transition and find that they exactly match the known results for a charged black hole in anti-de Sitter space. We find strong evidence for similar phase transitions for the de Sitter black hole as well. Thus many of the thermodynamic features of charged anti-de Sitter black holes do not really depend on asymptotically anti-de Sitter boundary conditions; the thermodynamics of charged black holes is surprisingly universal.
description: LaTeX, 14 pages, 9 eps figures; higher resolution figures available on request
Moving away from poverty: A spatial analysis of poverty and migration in Albania
Creators: name: Zezza, Alberto
name: Carletto, Calogero
name: Davis, Benjamin
name: Zezza, Alberto
name: Carletto, Calogero
name: Davis, Benjamin
Publisher: name: Unknown
Year: 2005
Subjects: Food Security and Poverty

description: This paper analyses recent patterns of migration and poverty in Albania, a country that following the collapse of the communist regime in 1990 ' has been experiencing high migration rates. Using a combination of survey and census data, the paper characterises spatial patterns in the distribution of poverty and migration at a high level of geographic disaggregation. The results emphasise the importance of analysing internal and international migration as different phenomena, as the two appear to be associated in opposite ways to observed poverty and welfare levels. While poverty acts as a push factor for internal migration, it seems to be a constraining factor for the more costly international migration. The results also suggest that rural migration to urban areas contributes to the relocation of poverty in urban areas.
description: FAO Document Repository: http://www.fao.org/3/a-ae589t.pdf
Voyager 2 enters interstellar space
Creators: name: Strauss, R. Du Toit
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: After 41 years of travel, the Voyager 2 spacecraft joins its twin in interstellar space. A suite of papers report Voyager 2's experience of its transition through the heliosheath and heliopause to what lies beyond.
Linkages and rural non-farm employment creation: Changing challenges and policies in Indonesia
Creators: name: Kristiansen, Stein
name: Kristiansen, Stein
Publisher: name: Unknown
Year: 2003
Subjects: Community/Rural/Urban Development

description: Increasing problems of rural unemployment in Indonesia are at the core of this report. Numbers of unemployed increased dramatically after the 1997 economic crisis and millions of people searched to be reabsorbed in rural labour markets. Agricultural land is scarce, however, and entry barriers are often high in non-farm businesses. Access to capital and information is limited for the rural poor and uneducated people. During successful periods of economic growth in Indonesia, various linkages in factor and commodity markets were created. Any return to the state-dominated economy and substantial government interventions in markets is unrealistic, but linkages may nevertheless be manipulated for political ends like employment creation. Policy instruments may still be applicable for reducing market failures and to facilitate commercial transactions in an economy characterised by disintegration and sectoral and geographical disconnection. This paper aims to assess experiences from former linkage strategies for rural non-farm employment creation and to point at new policies suitable in various and changing economic, political and cultural contexts of Indonesia. A conclusion is that linkages and rural employment creation strategies should aim towards mobilising the variety of local natural and cultural resources and encourage horizontal communication and economic transactions between regions and peoples.
description: FAO Document Repository: http://www.fao.org/3/a-ae055t.pdf