cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Oscillation dynamics of scalarized neutron stars
Creators: name: Krüger, Christian J.
name: Doneva, Daniela D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Scalar-tensor theories are well studied extensions of general relativity that offer deviations which are yet within observational boundaries. We present the time evolution equations governing the perturbations of a nonrotating scalarized neutron star, including a dynamic spacetime as well as scalar field within the framework of such scalar-tensor theories. We employ a theory that allows for a massive scalar field or a self-interaction term and we study the impact of those parameters on the non-axisymmetric $f$-mode. The time evolution approach allows for a comparatively simple implementation of the boundary conditions. We find that the $f$-mode frequency is no longer a simple function of the star's average density when a scalar field is present. We also evaluate the accuracy of different variants of the Cowling approximation commonly used in previous studies of neutron star oscillation modes in alternative theories of gravity and demonstrate that it can give us not only qualitatively correct results, but in some cases also good quantitative estimates of the oscillations frequencies.
description: 28 pages, 5 figures
The Transient Ultra-luminous X-ray Source, ULX-4, in M51
Creators: name: Allak, S.
name: Akyuz, A.
name: Oralhan, İ. Akkaya
name: Avdan, S.
name: Aksaker, N.
name: Vinokurov, A.
name: Soydugan, F.
name: Sonbas, E.
name: Dhuga, K. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the results of a temporal and spectral analysis of the transient source ULX-4 in the galaxy M51. The data used were drawn from Chandra, XMM-Newton and Swift-XRT archives, spanning the years 2000-2019. The X-ray flux of the source is seen to vary by two orders of magnitudes within a month but a short-term variability was not observed over the time intervals of 100-2000 second in the 0.3-10 keV energy band. We find some evidence for the existence of bi-modality feature in the flux distribution of ULX-4. We identified two optical sources as possible counterparts within an error radius of 0."18 at 95% confidence level for ULX-4 based on the archival HST/ACS and HST/WFC3 data. Blackbody fits of the spectral energy distributions (SEDs) indicate the spectral type to be B-type stars. One of these counterparts exhibits a low-amplitude optical periodicity of 264 days in the F606W filter; if we assume this apparent periodicity is associated with the orbital motion of the donor, then it is more likely that the donor is a red supergiant satisfying the long periodicity and accretion via Roche-lobe overflow. Consequently, the SED would then have to be interpreted as a superposition of emissions from a cold donor and a hot flow component, most likely from an accretion disk. If, on the other hand, the periodicity is super orbital in nature i.e., due to possible interactions of the compact object with a circumstellar disk, the donor could then be a Be/X star hosting a neutron star.
description: Accepted for publication in MNRAS. 16 pages, 12 figures, 6 tables
title: Through Portugal
title: From a British Traveller’s Deconstruction of the Spanish Image of Portugal to the Promotion of the Country as a Tourist Destination
titleType: Subtitle
Creators: name: Terenas, Gabriela Gândara
Publisher: name: CETAPS, Centre for English, Translation and Anglo-Portuguese Studies, Faculdade de Ciências Sociais e Humanas, Universidade NOVA de Lisboa
Year: 2021

description: Through Portugal (1907), a travel account written by the Hispanist, Martin Andrew Sharp Hume (1843-1910), invites examination from two complimentary angles. Due to Spanish ancestry on his mother’s side, Hume lived for a time in Spain, an experience which would mark his view of other countries and cultures. Hence, the first part of the present article will attempt to assess how far his experience of life in Spain gave him a stereotyped view of the neighbouring country – Portugal – which the author systematically deconstructs along his account. As I will attempt to show, it is the (re)discovery of the “Other” filtered not through what had been previously written by other British “Selfs” but rather by what “other Others”, the Spanish, had passed on to him. In the second part the impact of the book on the English-speaking world will be examined, linking it to the promotion of tourism to Portugal carried out by the Sociedade Propaganda de Portugal.
description: Terenas, Gabriela Gândara, Through Portugal: From a British Traveller’s Deconstruction of the Spanish Image of Portugal to the Promotion of the Country as a Tourist Destination. Revista de Estudos Anglo-Portugueses / Journal of Anglo-Portuguese Studies, n.º 30 (2021) pp. 201–220. ISSN: 0871-682X
Buddhaghosa’s Padyacudamani: as a biography of the Buddha
Creators: name: Fernando, Anusha
Publisher: name: University of British Columbia
Year: 2009

description: The objective of this thesis is to present the PadyacDdmani, a previously untranslated Sanskrit poem on the life or the Buddha. This text has been ascribed to the Pãli scholar Bhadantcariya Buddhaghosa. My study will focus upon this text as a biography of the Buddha. To do so, I will present only those verses which move the Padyacüdmani’s narrative forward. These verses will be presented within the thesis and recollected in an Appendix. To study the Padyacadamani as a biography of the Buddha I will compare it with the traditional Buddha biographies. These are the Buddhacarita, Lalitavistara and Mahvastu [all Sanskrit works] and the Nidnakathã, the only biography of the Buddha written in Päli. What is illuminated by such a comparison is the striking similarity between the PadyaciJdmani and the Avidüre Nidäna [Intermediate Epoch] of the Nidnakathã biographical account. This similarity is made more interesting by the fact that the Nidnakathã has also been ascribed to Buddhaghosa. However, Buddhaghosa’s authorship of the Nidãnakath has been questioned due to its difference in style and expression from his other works. I will argue that the PadyacOdãmani is also a peculiar work for the Buddhist scholar Bhadantcariya Buddhaghosa, for, it is his only Sanskrit work, his only poem and, unlike his other works, is primarily not a Buddhist work. I will argue that the association of Buddhaghosa’s name with the Padyacadamani is not to indicate his authorship of this text but a way of highlighting the relationship between the Padyacüdãmani and the Nidänakath, which has been ascribed to Buddhaghosa. By presenting the PC as a biography of the Buddha, two avenues for further exploration are illuminated. Firstly, more research should be done on the relationship between the PadyacOdmani and the Nidnakath biographical accounts. Secondly, it seems that there are good grounds to question whether the Pãli scholar Buddhaghosa was indeed the author of this text.
Complete Michel Parameter Analysis of inclusive semileptonic b \to c transition
Creators: name: Dassinger, Benjamin
name: Feger, Robert
name: Mannel, Thomas
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a complete "Michel parameter" analysis of all possible helicity structures which can appear in the process $B \to X_c \ell \barν_\ell$. We take into account the full set of operators parametrizing the effective Hamiltonian and include the complete one-loop QCD corrections as well as the non-perturbative contributions. The moments of the leptonic energy as well as the combined moments of the hadronic energy and hadronic invariant mass are calculated including the non-standard contributions.
description: 22 pages, 3 figures, non-perturbative corrections added
Reconnection and particle acceleration in 3D current sheet evolution in moderately-magnetized astrophysical pair plasma
Creators: name: Werner, Gregory R.
name: Uzdensky, Dmitri A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Magnetic reconnection, a plasma process converting magnetic energy to particle kinetic energy, is often invoked to explain magnetic energy releases powering high-energy flares in astrophysical sources including pulsar wind nebulae and black hole jets. Reconnection is usually seen as the (essentially 2D) nonlinear evolution of the tearing instability disrupting a thin current sheet. To test how this process operates in 3D, we conduct a comprehensive particle-in-cell simulation study comparing 2D and 3D evolution of long, thin current sheets in moderately-magnetized, collisionless, relativistically-hot electron-positron plasma, and find dramatic differences. We first systematically characterize this process in 2D, where classic, hierarchical plasmoid-chain reconnection determines energy release, and explore a wide range of initial configurations, guide magnetic field strengths, and system sizes. We then show that 3D simulations of similar configurations exhibit a diversity of behaviours, including some where energy release is determined by the nonlinear relativistic drift-kink instability. Thus, 3D current-sheet evolution is not always fundamentally classical reconnection with perturbing 3D effects, but, rather, a complex interplay of multiple linear and nonlinear instabilities whose relative importance depends sensitively on the ambient plasma, minor configuration details, and even stochastic events. It often yields slower but longer-lasting and ultimately greater magnetic energy release than in 2D. Intriguingly, nonthermal particle acceleration is astonishingly robust, depending on the upstream magnetization and guide field, but otherwise yielding similar particle energy spectra in 2D and 3D. Though the variety of underlying current-sheet behaviours is interesting, the similarities in overall energy release and particle spectra may be more remarkable.
description: 92 pages, 42 figures, 4 tables
Quantum mutual information and the one-time pad
Creators: name: Schumacher, Benjamin
name: Westmoreland, Michael D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Alice and Bob share a correlated composite quantum system AB. If AB is used as the key for a one-time pad cryptographic system, we show that the maximum amount of information that Alice can send securely to Bob is the quantum mutual information of AB.
description: 11 pages, LaTeX
Risk Factors for Intimate Partner Violence in Asylum Seeking and Refugee Populations: A Systematic Review
Creators: name: Elmoslemany, Riyad
Publisher: name: Royal College of Surgeons in Ireland
Year: 2021
Subjects: subject: 111799 Public Health and Health Services not elsewhere classified
subject: FOS: Health sciences

description: Background: Intimate partner violence is a serious public health problem. Asylum seekers and refugees are marginalised populations that are vulnerable to violence in general and may be vulnerable to intimate partner violence (IPV) in particular. More research exists on risk factors for IPV in the general population than in asylum seeking and refugee populations. Evidence is emerging that the prevalence of IPV in these populations is high but risk factors for IPV within these populations have yet to be established. To the best of our knowledge, this is the first study to review IPV in asylum seeking and refugee populations. The aim and objective of this thesis is to identify risk factors for intimate partner violence in asylum seeking and refugee populations through systematic review and narrative synthesis of the literature.Methods: PubMed, Web of Science, SCOPUS, Embase, Global Health, PsycINFO, Westlaw and Social Science Research Network electronic databases were searched. Grey literature databases, agency websites and bibliographic citations were also searched. Studies were selected according to a population, exposure and outcome framework. Adult asylum seekers and refugees that had crossed an international border were included. Any quantitative observational study on risk factors for IPV was eligible for inclusion. Data were extracted across six domains; study details, methods, exposure, outcome, analysis and results. Studies were critically appraised with the Joanna Briggs Institute SUMARI tool and quality assessed according to the GRADE approach. Meta-analysis was not possible due to multiple heterogeneity types.Results: A complex multitude of risk factors for IPV in asylum seeking and refugee populations was found. Narrative synthesis of 23 studies revealed an inverse association between both perpetrator and victim education level and IPV, with lower levels of education being associated with higher levels of IPV. Relationship factors, legal status and age were also important risk factors for IPV. The majority of studies had a cross-sectional design. Heterogeneity in definitions of IPV, sample, methods, statistical procedures and outcomes was uncovered.Conclusions: Low education level is a potentially modifiable risk factor for IPV in asylum seeking and refugee populations. There is a dearth of high quality rigorous research in this area. Future research needs more consistency particularly regarding definitions of IPV. Multiple stakeholders could use the results of this review to help these populations and address the insidious problem of intimate partner
Fully coupled functional equations for the quark sector of QCD
Creators: name: Gao, Fei
name: Papavassiliou, Joannis
name: Pawlowski, Jan M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a comprehensive study of the quark sector of $2+1$ flavour QCD, based on a self-consistent treatment of the coupled system of Schwinger-Dyson equations for the quark propagator and the full quark-gluon vertex. The individual form factors of the quark-gluon vertex are expressed in a special tensor basis obtained from a set of gauge-invariant operators. The sole external ingredient used as input to our equations is the Landau gauge gluon propagator with $2+1$ dynamical quark flavours, obtained from studies with Schwinger-Dyson equations, the functional renormalisation group approach, and large volume lattice simulations. The appropriate renormalisation procedure required in order to self-consistently accommodate external inputs stemming from other functional approaches or the lattice is discussed in detail, and the value of the gauge coupling is accurately determined at two vastly separated renormalisation group scales. Our analysis establishes a clear hierarchy among the vertex form factors. We identify only three dominant ones, in agreement with previous results. The components of the quark propagator obtained from our approach are in excellent agreement with the results from Schwinger-Dyson equations, the functional renormalisation group, and lattice QCD simulation, a simple benchmark observable being the chiral condensate in the chiral limit, which is computed as $(245\,\textrm{MeV})^3$. The present approach has a wide range of applications, including the self-consistent computation of bound-state properties and finite temperature and density physics, which are briefly discussed.
description: 72 pages, 30 figures. Version including minor changes of version published in PRD. For the benefit of the reader we have also added an Appendix, that contains many more details of the renormalization scheme (MOM${}^2$ scheme) used in this work. In particular we provide a comparison with MOM scheme results in the literature (Appendix A2), as well as the derivation of the RG scheme (Appendix A3)
X-ray Properties of Intermediate-Redshift Groups of Galaxies
Creators: name: Jeltema, T. E.
name: Mulchaey, J. S.
name: Lubin, L. M.
name: Rosati, P.
name: Bohringer, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have undertaken a multiwavelength project to study the relatively unknown properties of groups and poor clusters of galaxies at intermediate redshifts. In this paper, we describe the XMM-Newton observations of six X-ray selected groups with 0.2
description: 31 pages, 13 figures, accepted to ApJ for version with full resolution figures see http://www.ociw.edu/~tesla/midzgroups.ps.gz
Exact treatment of exciton-polaron formation by Diagrammatic Monte Carlo
Creators: name: Burovski, Evgeni
name: Fehske, Holger
name: Mishchenko, Andrei S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We develop an approximation-free Diagrammatic Monte Carlo technique to study fermionic particles interacting with each other simultaneously through both an attractive Coulomb potential and bosonic excitations of the underlying medium. Exemplarily we apply the method to the long-standing exciton-polaron problem and present numerically exact results for the wave function, ground-state energy, binding energy and effective mass of this quasiparticle. Focusing on the electron-hole pair bound-state formation, we discuss various limiting cases of a generic exciton-polaron model. The frequently used instantaneous approximation to the retarded interaction due to the phonon exchange is found to be of very limited applicability. For the case of a light electron and heavy hole the system is well approximated by a particle in the field of a static attractive impurity.
description: 5 pages, 5 figures
Rotating Black Holes in Higher Dimensional Einstein-Maxwell Gravity
Creators: name: Aliev, A. N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The strategy of obtaining the familiar Kerr-Newman solution in general relativity is based on either using the metric ansatz in the Kerr-Schild form, or applying the method of complex coordinate transformation to a non-rotating charged black hole. In practice, this amounts to an appropriate re-scaling of the mass parameter in the metric of uncharged black holes. Using a similar approach, we assume a special metric ansatz in N+1 dimensions and present a new analytic solution to the Einstein-Maxwell system of equations. It describes rotating charged black holes with a single angular momentum in the limit of slow rotation. We also give the metric for a slowly rotating charged black hole with two independent angular momenta in five dimensions. We compute the gyromagnetic ratio of these black holes which corresponds to the value g=N-1.
description: 19 pages, minor changes, typos corrected
title: Dickens in ‘Trajes Portugueses’
title: Translation and Retranslation of the Short Narrative ‘The Black Veil’
title: Dickens em “Trajes Portugueses”
title: Tradução e Retradução do Conto “The Black Veil”
titleType: Subtitle
Creators: name: Castanheira, Maria Zulmira
Publisher: name: CETAPS, Centre for English, Translation and Anglo-Portuguese Studies, Faculdade de Ciências Sociais e Humanas, Universidade NOVAa de Lisboa
Year: 2021

description: The way Alexandre Herculano (1810-1877), one of the founders of Portuguese Romanticism, refers to Charles Dickens (1812-1870) in 1851, including him among the modern representatives of ‘industrial literature,’ of ‘merchandise literature,’ of ‘pot boilers’ (“Da Propriedade Litteraria”), is significant proof that admiration for the British novelist and recognition of his work’s social scope were late in arriving in Portugal. The following years saw some of the most prominent Portuguese literary critics of the Romantic period follow in Herculano’s footsteps in displaying the same lack of knowledge of and appreciation for Dickens’s work. This poverty in the critical reception of Dickens was matched by an equally poor reception of his work in translation. Up to 1865, the year which witnessed the crucial turning point in the Portuguese Romantic process, published translations into Portuguese of Dickens’s work were few and did not include any of his novels. However, these translations appeared in the periodical press, at the time the most widely read medium for cultural dissemination, so that they will have reached a relatively wide audience. Of the narratives to be found in Sketches by Boz published by Jornal do Porto in 1863-1864, ‘O veu negro’ (‘The Black Veil’ in the original) stands out as the Boz story which would most often be published in Portuguese: nine times between 1863 e 1904. This peculiarity constitutes this article’s object of study, which seeks to follow the transit of this short narrative in Portugal in translation. By comparing the nine versions one against the other I will enquire whether these are all different translations or reprints, subject to revision or otherwise. I will further examine the linguistic-textual features of the successive translations, considering whether there is paratextual material, the translating strategies used, the processes of manipulation and re-writing, and also the elements which allow us to infer the status of the translator and of the practice of translation in the Portuguese literary system of the time.
description: Castanheira, Maria Zulmira. Dickens in ‘Trajes Portugueses’:Translation and Retranslation of the Short Narrative ‘The Black Veil’. Revista de Estudos Anglo-Portugueses / Journal of Anglo-Portuguese Studies, n.º 30 (2021) pp. 127-153. ISSN: 0871-682X
Code-Verification Techniques for the Method-of-Moments Implementation of the Electric-Field Integral Equation
Creators: name: Freno, Brian A.
name: Matula, Neil R.
name: Owen, Justin I.
name: Johnson, William A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The method-of-moments implementation of the electric-field integral equation yields many code-verification challenges due to the various sources of numerical error and their possible interactions. Matters are further complicated by singular integrals, which arise from the presence of a Green's function. In this paper, we provide approaches to separately assess the numerical errors arising from the use of basis functions to approximate the solution and the use of quadrature to approximate the integration. Through these approaches, we are able to verify the code and compare the error from different quadrature options.
description: arXiv admin note: text overlap with arXiv:2012.08681
Electronic viscosity in a quantum well: A test for the local density approximation
Creators: name: D'Agosta, Roberto
name: Di Ventra, Massimiliano
name: Vignale, Giovanni
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the local density approximation (LDA) for electronic time-dependent current-density functional theory (TDCDFT) many-body effects are described in terms of the visco-elastic constants of the homogeneous three-dimensional electron gas. In this paper we critically examine the applicability of the three-dimensional LDA to the calculation of the viscous damping of 1-dimensional collective oscillations of angular frequency $ω$ in a quasi 2-dimensional quantum well. We calculate the effective viscosity $ζ(ω)$ from perturbation theory in the screened Coulomb interaction and compare it with the commonly used three-dimensional LDA viscosity $Y(ω)$. Significant differences are found. At low frequency $Y(ω)$ is dominated by a shear term, which is absent in $ζ(ω)$. At high frequency $ζ(ω)$ and $Y(ω)$ exhibit different power law behaviors ($ω^{-3}$ and $ω^{-5/2}$ respectively), reflecting different spectral densities of electron-hole excitations in two and three dimensions. These findings demonstrate the need for better approximations for the exchange-correlation stress tensor in specific systems where the use of the three-dimensional functionals may lead to unphysical results.
description: 10 pages, 7 figures, RevTex4
Controlling electronic spin relaxation of cold molecules with electric fields
Creators: name: Tscherbul, T. V.
name: Krems, R. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a theoretical study of atom - molecule collisions in superimposed electric and magnetic fields and show that dynamics of electronic spin relaxation in molecules at temperatures below 0.5 K can be manipulated by varying the strength and the relative orientation of the applied fields. The mechanism of electric field control of Zeeman transitions is based on an intricate interplay between intramolecular spin-rotation couplings and molecule-field interactions. We suggest that electric fields may affect chemical reactions through inducing nonadiabatic spin transitions and facilitate evaporative cooling of molecules in a magnetic trap.
description: 4 figures
Nesting and roosting habitat and breeding biology of the barn owl (Tyto alba) in the Lower Mainland of British Columbia
Creators: name: Andrusiak, Lorraine A.
Publisher: name: University of British Columbia
Year: 2009

description: Nesting and roosting habitat use and breeding biology of the barn owl (Tyto alba pratincola) in the Lower Mainland of British Columbia were studied over 3 years from 1990-92. A total of 236 sites used by barn owls were located, all but 9 of which were man-made. The majority of the sites (72%) were barns, then silos (11 %) and industrial buildings (4%). Natural nest sites were located in both live trees and snags. It is suggested that barn owls choose man-made sites over natural sites because of the increased thermal cover and increased security from predators. Yearly variations in brood size and the mean number of young fledged per nest were observed, with the lowest values for both recorded in 1991. Poor environmental conditions are thought to be responsible for lowered breeding success in this case. The 3 year mean clutch size, brood size and number of young fledged per nest and their standard deviations were 6.5 (+ 3.5), 3.3 (± 2.0) and 2.6 (±2.1), respectively. Taxidermy data provided information on mortality of adult barn owls. Road kills were found to account for the largest proportion (62.9%) of the carcasses, with starvation (16.7%) and unknown causes (14.6%) making up most of the remainder. Mortality in general was lowest in the summer and highest in the winter. Examination of banding records revealed an average age of 28.1 months at death, with most birds being recovered less than 20 km from their place of banding. Contrary to published hypotheses, no evidence of southward migration could be found. Six adult barn owls were radio-tracked and each was found to have a favoured roost site at which it could be located most of the time. The barn owls roosted at both manmade and natural sites, the choice of which seemed to depend on the preferences of the individual. Several barn owl nestbox programs have been initiated in the Lower Mainland and preliminary results from 2 of the programs show occupancy of the boxes at 31-57% about 2 years after the installation of the boxes. Examination of the history of agriculture in the Lower Mainland reveals that acreage of prime barn owl hunting habitat such as pasture and unimproved pasture are declining. The future of the barn owl in the Lower Mainland depends upon the efficacy of farmland conservation programs such as the Agricultural Land Reserve in preserving farmland from urban development.
Direct detection of exoplanet host star companion gamma Cep B and revised masses for both stars and the sub-stellar object
Creators: name: Neuhaeuser, Ralph
name: Mugrauer, Markus
name: Fukagawa, Misato
name: Torres, Guillermo
name: Schmidt, Tobias
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The star gamma Cep is known as a single-lined spectroscopic triple system at a distance of 13.8 pc, composed of a K1 III-IV primary star with V = 3.2 mag, a stellar-mass companion in a 66--67 year orbit (Torres 2006), and a substellar companion with M_p sin i = 1.7 M_Jup that is most likely a planet (Hatzes et al. 2003). We aim to obtain a first direct detection of the stellar companion, to determine its current orbital position (for comparison with the spectroscopic and astrometric data), its infrared magnitude and, hence, mass. We use the Adaptive Optics camera CIAO at the Japanese 8m telescope Subaru on Mauna Kea, Hawaii, with the semi-transparent coronograph to block most of the light from the bright primary gamma Cep A, and to detect at the same time the faint companion B. In addition, we also used the IR camera Omega-Cass at the Calar Alto 3.5m telescope, Spain, to image gamma Cep A and B by adding up many very short integrations (without AO). gamma Cep B is clearly detected on our CIAO and Omega-Cass images. We use a photometric standard star to determine the magnitude of B after PSF subtraction in the Subaru image, and the magnitude difference between A and B in the Calar Alto images, and find an average value of K = 7.3 \pm 0.2 mag. The separations and position angles between A and B are measured on 15 July 2006 and 11 and 12 Sept 2006, B is slightly south of west of A. By combining the radial velocity, astrometric, and imaging data, we have refined the binary orbit and determined the dynamical masses of the two stars in the gamma Cep system, namely 1.40 \pm 0.12 M_sun for the primary and 0.409 \pm 0.018 M_sun for the secondary (consistent with being a M4 dwarf). We also determine the minimum mass of the sub-stellar companion to be M_p sin i = 1.60 \pm 0.13 M_Jup.
description: A&A in press, 5 pages with 4 figures
LA CORRUZIONE DELLA NATURA UMANA NEL PENSIERO MEDIEVALE: BONAVENTURA INTERPRETE DI AGOSTINO
Creators: name: COVA, LUCIANO
Publisher: name: Dipartimento di Scienze Umane, Università di Ferrara
Year: 2015
Subjects: Antropologia medievale, Agostinismo, Peccato originale, Medieval Anthropology, Augustinism, Original Sin

description: The current state of weakness and moral conflict is not the true condition of man, but rather the result of a fall, which has corrupted his nature. This is a conviction deeply rooted in medieval culture. It is also the idea already supported by Augustine in controversy with the Pelagians. According to these, a nature created good cannot be corrupted by the abuse of an individual, because sin is always a personal act and cannot be transmitted from father to son. The most penetrating reading of Augustine’s speech can be found perhaps in the work of Bonaventure, the Franciscan teacher who worked in Paris in the mid of the 13th century. In the same years, the Dominican Thomas Aquinas, more attentive to the needs of the Aristotelian natural philosophy, that scholastic thought was rediscovering, judged the fall is not a real distortion of human nature, but rather the loss of supernatural gifts, by which God had exempted man from limits inherent in his nature. For Bonaventure instead, we cannot rationally admit that from a good, just and wise God originates a nature inclined to evil, marked by the concupiscence and destined to suffering, ageing and death. It was Adam’s rebellion that merited the pain of this disorder, because that sensuality and the body do not obey any more the higher faculties of the soul. Nevertheless, man through his own forces cannot recover the primitive harmony. Only God can do it through his grace. Christ’s redemption not only restores human nature, but also elevates it to the heavenly glory. However, this will only happen at the end of time, whereas now, in spite of the baptism that washes away the guilt, there remain concupiscence, ignorance and mortality. But it remains also a coercive social order, that is the domination of rulers over their subjects, husbands over wives and lords over slaves. This order, regarded as result but also as remedy of sin, must remain, and fallen man cannot aspirate to rebuild a paradise on earth.
description: I castelli di Yale online, volume III, numero 1, 2015
The changing notion of chimera states, a critical review
Creators: name: Haugland, Sindre W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Chimera states, states of coexistence of synchronous and asynchronous motion, have been a subject of extensive research since they were first given a name in 2004. Increased interest has lead to their discovery in ever new settings, both theoretical and experimental. Less well-discussed is the fact that successive results have also broadened the notion of what actually constitutes a chimera state. In this article, we critically examine how the results for different model types and coupling schemes, as well as varying implicit interpretations of terms such as coexistence, synchrony and incoherence, have influenced the common understanding of what constitutes a chimera. We cover both theoretical and experimental systems, address various chimera-derived terms that have emerged over the years and finally reflect on the question of chimera states in real-world contexts.
description: Review paper. 10 pages, 5 figures. Significantly expanded introduction since the first version, added a few references on solitary states and scroll-ring chimeras as well as a sentence in the concluding remarks
LA MINACCIA DEL CORPO MORTO.  UN FILONE ESTENSE DAL CINQUE AL SETTECENTO
Creators: name: RICCI, GIOVANNI
Publisher: name: Dipartimento di Scienze Umane, Università di Ferrara
Year: 2015
Subjects: History of ideas, Corruption, Body, Death, Storia della idee, Corruzione, Corpo, Morte

description: This essay considers the first and not metaphorical meaning of the word corruption: «The corrupt, being corrupt, in the sense of decomposition, decay, rot». I will reflect on the relationship between the living and the dead meaning the seconds actually like dead bodies. Along a thin line, defined as Estense because unraveled between Ferrara and Modena, I will trace the signs of a growing rift between the living and the dead during the Modern Age, starting from a curious short essay published in Ferrara in 1565: De non sepeliendis mortis penes aram («Do not bury the dead close to the altars of the churches»).
description: I castelli di Yale online, volume III, numero 1, 2015
Coherent Scattering-mediated correlations between levitated nanospheres
Creators: name: Brandão, Igor
name: Tandeitnik, Daniel
name: Guerreiro, Thiago
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore entanglement generation between multiple optically levitated nanospheres interacting with a common optical cavity via the Coherent Scattering optomechanical interaction. We derive the many-particle Hamiltonian governing the unitary evolution of the system and show that it gives rise to quantum correlations among the various partitions of the setup, following a non-Markovian dynamics of entanglement birth, death and revivals. We also consider the effects of coupling the system to external environments and show that under reasonable experimental conditions entanglement between the mechanical modes can survive even at room temperature. Its dependence upon the number of nanoparticles, their initial temperature and coupling strength is studied. A numerical toolbox to simulate the closed and open dynamics of Gaussian optomechanical states and their informational measures is developed.
On the volume of nodal sets for eigenfunctions of the Laplacian on the torus
Creators: name: Rudnick, Zeev
name: Wigman, Igor
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 35P20

description: We study the volume of nodal sets for eigenfunctions of the Laplacian on the standard torus in two or more dimensions. We consider a sequence of eigenvalues $4π^2\eigenvalue$ with growing multiplicity $\Ndim\to\infty$, and compute the expectation and variance of the volume of the nodal set with respect to a Gaussian probability measure on the eigenspaces. We show that the expected volume of the nodal set is $const \sqrt{\eigenvalue}$. Our main result is that the variance of the volume normalized by $\sqrt{\eigenvalue}$ is bounded by $O(1/\sqrt{\Ndim})$, so that the normalized volume has vanishing fluctuations as we increase the dimension of the eigenspace.
description: 20 pages, Was accepted for publication in the Annales Henri Poincare
Access to public records legislation in North America : a content analysis
Creators: name: Weber, David Allen
Publisher: name: University of British Columbia
Year: 2009

description: This thesis examines federal, state and provincial legislation concerning access to public records in the United States and Canada using content analysis as a method for gathering data. The analysis focuses on the following specific statutory elements: the legislative intent or purpose, eligibility, the definition of records or public records, the duration of exemptions, severability, responsiveness to requests, and publication of information about records. The elements are discussed from the perspective of archival theory and practice. With regard to legislative intent or purpose, the most appropriately expressed clearly confer a right of access to records. If the overall purpose is accountability, right of access is best conferred on citizens. If general openness is the aim, eligibility for all persons is more fitting. When legislative definitions of public records and a model definition are compared, the model definition covers a broader concept of public agencies than is normal within the scope of existing access legislation. A more consistent application of the definition would also have legislators define records instead of public records, and provide a means of identifying more specifically those public agencies which fall within the purview of the legislation. Because the passage-of-time principle has rarely formed part of legislation, it is possible that, contrary to the spirit of access legislation, exemptions may apply in perpetuity. Although provisions for severability of information result in the release of more records, they may also affect the probative value of records. With regard to responsiveness to requests and provision of information about records, government agencies might take advantage of the expertise and experience of archivists in providing reference services and producing finding aids. The overall results point to the appropriateness of adopting a unified view of public records administration with the archivist and the record administrator each moving beyond traditional bounds of responsibility for historical records and active records, respectively. For archivists, the introduction of access to public records legislation represents an opportunity to make their expertise more widely available to administer access to records at all stages.
CORRUZIONE E MALATTIA NELLA MEDICINA D’ETÀ MODERNA
Creators: name: BRESADOLA, MARCO
Publisher: name: Dipartimento di Scienze Umane, Università di Ferrara
Year: 2015
Subjects: Storia della medicina in età moderna, autopsie, History of medicine in modern age, autopsies

description: The concept of corruption plays a central role in early modern medicine, in which it can refer either to the disease process or to the decaying process that follows the death of the body. The article explores these different meanings of the term, and their relative tensions, in two specific areas: medicina practica and anatomy. While in practical medicine the concept of corruption is generally associated to the process of putrefaction that accompanies the disease, in anatomy the question arises whether the corruption of the body, observed during post-mortem inspection, precedes or follows the death of the patient. The different uses of the concept of corruption show the ambiguity of this term in early modern medicine, but also its ubiquitous presence and important role in the medical discourse and practice.
description: I castelli di Yale online, volume III, numero 1, 2015
CORRUPTION IN VICO’S PHILOSOPHY  OF HISTORY. SACRED, PROFANE AND CIVIL TIME
Creators: name: ROBERTSON, JOHN
Publisher: name: Dipartimento di Scienze Umane, Università di Ferrara
Year: 2015
Subjects: History of Philosophy; Philosophy of History; Early Modern; Enlightenment, Storia della filosofia, Filosofia della storia, Età moderna, Illuminismo

description: Giambattista Vico's conception of a «storia ideale eterna», in which history is characterised by «corso» and «ricorso», is, on the face of it, highly likely to give prominence to the theme of corruption.  It is argued here, however, that corruption plays only a minor part in Vico’s philosophy of history.  The explanation for this is found in Vico’s purpose in the Scienza Nuova, to provide an explanation of the formation of human societies which would refute that offered by the Protestant natural jurists, Hobbes, Grotius, Selden and Pufendorf.  Against these, Vico would demonstrate the regular operation of divine providence in the «corso» and «ricorso» of nations; and in the «ricorso» following the fall of Rome he believed that modern monarchies had acquired the capacity to resist corruption.  By way of epilogue, Vico’s philosophy of history is compared with Rousseau's: it was the latter, it is argued, who made corruption once again a major problem for moral, political and historical philosophers.
description: I castelli di Yale online, volume III, numero 1, 2015
Agriculture and Trade of Nicaragua
Creators: name: Coyner, Mary S.
name: Coyner, Mary S.
Publisher: name: Unknown
Year: 1963
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Effective April 3, 1961, the responsibility for the work in the Regional Analysis Division was transferred from the Foreign Agricultural Service to the Economic Research Service. This report, originally issued as FAS-M-87, is now reissued, without change in text, by the new agency.
BERNARD MANDEVILLE E I COSTI MORALI DELLA RICCHEZZA.  ARTE, POLITICA, ONORE E NATURA UMANA
Creators: name: BRANCHI, ANDREA
Publisher: name: Dipartimento di Scienze Umane, Università di Ferrara
Year: 2015
Subjects: Mandeville, Politica, Politeness, Onore, Self-Liking, Politic, Honour

description: Three hundred years since the publication of The Fable of the Bees Bernard Mandeville’s selfish system and his challenging observations on the way in which self-interested behaviour shapes social intercourse are remembered almost exclusively as a ground breaking theory on the moral implication of economic development, and its author as a forerunner of economic liberalism. Mandeville's main contribution to the Enlightenment's philosophy, as recent historiography has began to acknowledge, can be identified in the theory of a spontaneous, progressive development of human institutions – of sociability itself – through a slow process of natural selection of shared system of moral sentiments of approbation and disapprobation. From this perspective, the essay develops an analysis of the origins and functions of politics in Mandeville's evolutionary account of the development of human institutions and in connection with contemporary rituals of polite sociability, of male and female codes of honourable behaviour. Concurring with those Continental writers who stressed the components of hypocrisy and modish deceit implicit in the tradition of civility, Mandeville sees the rules of honour and politeness as the progressive outcome of a spontaneous balance of selfish passions in forms compatible with refined, polite commercial sociability. «Modern honour» is a form of spontaneous artificial order resulting from a natural passional disposition, an inescapable frame for the the practice and the intervention of a «skilful politician».
description: I castelli di Yale online, volume III, numero 1, 2015
«L’OPTIMISME EST DÉSESPÉRANT». VOLTAIRE E LA TEOLOGIA DELLA CORRUZIONE
Creators: name: GURRADO, ANTONIO
Publisher: name: Dipartimento di Scienze Umane, Università di Ferrara
Year: 2015
Subjects: Storia della filosofia moderna, illuminismo, religione, History of Modern Philosophy, Enlightenment, Religion

description: Voltaire’s views on optimism are grounded on what Pope wrote in An Essay on Man. Voltaire replicates such views, yet in an altogether different context, in the Discours en vers sur l’homme and exposes a full theory of the middle nature of man in the Anti-Pascal (Lettres philosophiques). Yet, originally refusing the theory of original sin, Voltaire seems to consider it more likely from 1756 on, after the great Lisbon earthquake. From his Poème sur le désastre on, Voltaire protests that optimism imposes the idea that nothing can ever change and go better than in the present evil; as such, it is «désésperant». If the world has been corrupted by original sin, though, this does not mean that religion has to change following an evolving idea of God – as Voltaire puts it in 1763, when he delineates in his Catéchisme de l’honnête homme the final step of his theology of corruption.
description: I castelli di Yale online, volume III, numero 1, 2015
Quantum annealing of the random-field Ising model by transverse ferromagnetic interactions
Creators: name: Suzuki, Sei
name: Nishimori, Hidetoshi
name: Suzuki, Masuo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce transverse ferromagnetic interactions, in addition to a simple transverse field, to quantum annealing of the random-field Ising model to accelerate convergence toward the target ground state. The conventional approach using only the transverse-field term is known to be plagued by slow convergence when the true ground state has strong ferromagnetic characteristics for the random-field Ising model. The transverse ferromagnetic interactions are shown to improve the performance significantly in such cases. This conclusion is drawn from the analyses of the energy eigenvalues of instantaneous stationary states as well as by the very fast algorithm of Bethe-type mean-field annealing adopted to quantum systems. The present study highlights the importance of a flexible choice of the type of quantum fluctuations to achieve the best possible performance in quantum annealing. The existence of such flexibility is an outstanding advantage of quantum annealing over simulated annealing.
description: 6 pages, 9 figures
TIPO, FORMA, MEMORIA. BUFFON E IL PROBLEMA DELLA DÉGÉNÉRATION
Creators: name: TEDESCO, SALVATORE
Publisher: name: Dipartimento di Scienze Umane, Università di Ferrara
Year: 2015
Subjects: Storia della filosofia, Buffon, dégénération, History of Philosophy

description: The concept of dégénération in Buffon plays a key role in allowing to articulate a reflection on the relationship between species and individual, in theorizing the unit of the type as hierarchical concept of higher order capable of giving an account of the reality of life in its diversification, and especially in allowing the arising of a consideration of the relationship between matter and living form that will profoundly affect the origins of modern biology as Goethe’s morphological thinking.
description: I castelli di Yale online, volume III, numero 1, 2015