cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
NA60 results on the rho spectral function in In-In collisions
Creators: name: Damjanovic, S.
name: Collaboration, NA60
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The NA60 experiment at the CERN SPS has studied low-mass muon pairs in 158 AGeV In-In collisions. A strong excess of pairs is observed above the yield expected from neutral meson decays. After subtraction of the decay sources, the shape of the resulting mass spectrum is largely consistent with a dominant contribution from pi+pi- -> rho -> mu+mu- annihilation. The associated rho spectral function exhibits considerable broadening, but essentially no shift in mass. The acceptance-corrected pT spectra have a shape atypical for radial flow. They also significantly depend on mass, pointing to different sources in different mass regions. Both mass and pT spectra are compared to recent theoretical predictions.
description: Prepared for International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2006), Asilomar, Pacific Grove, California, 9-16 Jun 2006
Towards Practical Implementations of Person Re-Identification from Full Video Frames
Creators: name: Sumari, Felix O.
name: Machaca, Luigy
name: Huaman, Jose
name: Clua, Esteban W. G.
name: Guérin, Joris
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: With the major adoption of automation for cities security, person re-identification (Re-ID) has been extensively studied recently. In this paper, we argue that the current way of studying person re-identification, i.e. by trying to re-identify a person within already detected and pre-cropped images of people, is not sufficient to implement practical security applications, where the inputs to the system are the full frames of the video streams. To support this claim, we introduce the Full Frame Person Re-ID setting (FF-PRID) and define specific metrics to evaluate FF-PRID implementations. To improve robustness, we also formalize the hybrid human-machine collaboration framework, which is inherent to any Re-ID security applications. To demonstrate the importance of considering the FF-PRID setting, we build an experiment showing that combining a good people detection network with a good Re-ID model does not necessarily produce good results for the final application. This underlines a failure of the current formulation in assessing the quality of a Re-ID model and justifies the use of different metrics. We hope that this work will motivate the research community to consider the full problem in order to develop algorithms that are better suited to real-world scenarios.
description: 7 pages, 9 figures, This paper is under consideration at Pattern Recognition Letters
Multimodal assessment of nigrosomal degeneration in Parkinson's disease
Creators: name: Langley, Jason
name: Huddleston, Daniel E.
name: Crosson, Bruce
name: Song, David
name: Factor, Stewart A.
name: Hu, Xiaoping
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Background: Approximately forty percent of all dopaminergic neurons in SNpc are located in five dense neuronal clusters, named nigrosomes. T2- or T2*-weighted images are used to delineate the largest nigrosome, named nigrosome-1. In these images, nigrosome-1 is a hyperintense region in the caudal and dorsal portion of the T2- or T2*-weighted substantia nigra. In PD, nigrosome-1 experiences iron accumulation, which leads to a reduction in T2-weighted hyperintensity. Here, we examine neuromelanin-depletion and iron deposition in regions of interest (ROIs) derived from quantitative-voxel based morphometry (qVBM) on neuromelanin-sensitive images and compare the ROIs with nigrosome-1 identified in T2*-weighted images. Methods: Neuromelanin-sensitive and multi-echo gradient echo imaging data were obtained. R2* was calculated from multi-echo gradient echo imaging data. qVBM analysis was performed on neuromelanin-sensitive images and restricted to SNpc. Mean neuromelanin-sensitive contrast and R2* was measured from the resulting qVBM clusters. Nigrosome-1 was segmented in T2*-weighted images of control subjects and its location was compared to the spatial location of the qVBM clusters. Results: Two bilateral clusters emerged from the qVBM analysis. These clusters showed reduced neuromelanin-sensitive contrast and increased mean R2* in PD as compared to controls. Cluster-1 from the qVBM analysis was in a similar spatial location as nigrosome-1, as seen in T2*-weighted images. Conclusion: qVBM cluster-1 shows reduced neuromelanin-sensitive contrast and is in a similar spatial position as nigrosome-1. This region likely corresponds to nigrosome-1 while the second cluster may correspond to nigrosome-2.
description: 11 pages, 3 figures, 1 table. Submitted to Parkinsonism and Related Disorders
On the Luminosity of Young Jupiters
Creators: name: Marley, M. S.
name: Fortney, J. J.
name: Hubickyj, O.
name: Bodenheimer, P.
name: Lissauer, J. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Traditional thermal evolution models of giant planets employ arbitrary initial conditions selected more for computational expediency than physical accuracy. Since the initial conditions are eventually forgotten by the evolving planet, this approach is valid for mature planets, if not young ones. To explore the evolution at young ages of jovian mass planets we have employed model planets created by one implementation of the core accretion mechanism as initial conditions for evolutionary calculations. We find that young jovian planets are smaller, cooler, and several to 100 times less luminous than predicted by earlier models. Furthermore the time interval during which the young jupiters are fainter than expected depends on the mass of planet. Jupiter mass planets (1 M_J) align with the conventional model luminosity in as little at 20 million years, but 10 M_J planets can take up to 1 billion years to match commonly cited luminosities, given our implementation of the core accretion mechanism. If our assumptions, especially including our treatment of the accretion shock, are correct, then young jovian planets are substantially fainter at young ages than currently believed. These results have important consequences both for detection strategies and for assigning masses to young jovian planets based on observed luminosities.
description: 20 pages, 6 figures, Astrophys. J. in press
Planck scale inflationary spectra from quantum gravity
Creators: name: Alberghi, Gian Luigi
name: Casadio, Roberto
name: Tronconi, Alessandro
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We derive the semiclassical evolution of massless minimally coupled scalar matter in the de Sitter space-time from the Born-Oppenheimer reduction of the Wheeler-DeWitt equation. We show that the dynamics of trans-Planckian modes can be cast in the form of an effective modified dispersion relation and that high energy corrections in the power spectrum of the cosmic microwave background radiation produced during inflation remain very small if the initial state is the Bunch-Davies vacuum.
description: 6 pages, no figures, final version to appear in PRD
Day Ahead Price Forecasting Models in Thin Electricity Market
Creators: name: Gupta, Sayani
name: Chitkara, Puneet
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Day Ahead Electricity Markets (DAMs) in India are thin but growing. Consistent price forecasts are important for their utilization in portfolio optimization models. Univariate or multivariate models with standard exogenous variables such as special day effects etc. are not always useful. Drivers of demand and supply include weather variations over large geographic areas, outages of power system elements and sudden changes in contracts which lead the players to access power exchanges. These needs to be considered in forecasting models. Such models are observed to considerably reduce forecasting errors by outperforming other models under conditions, which are neither infrequent nor recur at defined intervals. This paper develops models for India and tests the utility of these models using Model Confidence Set (MCS) approach which picks up the best models. The approach has been developed for a power utility in India over a period of two years in live business environment.
description: 6 pages, 6 figures, Power and Energy Conference at Illinois (PECI) 2017
A MARKOV chain model of a polling system with parameter regeneration
Creators: name: MacPhee, Iain
name: Menshikov, Mikhail
name: Petritis, Dimitri
name: Popov, Serguei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 60K25, 60J10 (Primary); 60G42, 90B22 (Secondary)

description: We study a model of a polling system, that is, a collection of $d$ queues with a single server that switches from queue to queue. The service time distribution and arrival rates change randomly every time a queue is emptied. This model is mapped to a mathematically equivalent model of a random walk with random choice of transition probabilities, a model which is of independent interest. All our results are obtained using methods from the constructive theory of Markov chains. We determine conditions for the existence of polynomial moments of hitting times for the random walk. An unusual phenomenon of thickness of the region of null recurrence for both the random walk and the queueing model is also proved.
description: Published in at http://dx.doi.org/10.1214/105051607000000212 the Annals of Applied Probability (http://www.imstat.org/aap/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Pholcus kangding Zhang & Zhu 2009
Creators: name: Tong, Yanfeng
name: Li, Shuqiang
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Pholcidae
Pholcus
Pholcus kangding

description: Pholcus kangding Zhang & Zhu, 2009 Figs 2G–I, 10A–F Pholcus kangding Zhang & Zhu, 2009: 43, fig. 20A–I. Material examined: 1 male, 1 female, CHINA: Sichuan Province, Kangding County, Paoma Hill (30°02.628´N, 101°57.924´E), 12 October 2005, X. Xu & X. Zhang Leg. Remarks: This species has been well described by Zhang & Zhu (2009). Distribution: Sichuan (type locality: Kangding County).
description: Published as part of Tong, Yanfeng & Li, Shuqiang, 2010, Eight new spider species of the genus Pholcus (Araneae, Pholcidae) from China, pp. 35-55 in Zootaxa 2355 on page 47
description: {"references": ["Zhang, F. & Zhu, M. S. (2009) A review of the genus Pholcus (Araneae: Pholcidae) from China. Zootaxa, 2037, 1 - 114."]}
Realistic Few-Body Physics in the $dd\to απ^0$ Reaction
Creators: name: Nogga, A.
name: Fonseca, A. C.
name: Gardestig, A.
name: Hanhart, C.
name: Horowitz, C. J.
name: Miller, G. A.
name: Niskanen, J. A.
name: van Kolck, U.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We use realistic two- and three-nucleon interactions in a hybrid chiral-perturbation-theory calculation of the charge-symmetry-breaking reaction $dd\toαπ^0$ to show that a cross section of the experimentally measured size can be obtained using LO and NNLO pion-production operators. This result supports the validity of our power counting scheme and demonstrates the necessity of using an accurate treatment of ISI and FSI.
description: 11 pages, 1 figure
Soft thresholding schemes for multiple signal classification algorithm
Creators: name: Acuña, Sebastian
name: Opstad, Ida S.
name: Godtliebsen, Fred
name: Ahluwalia, Balpreet Singh
name: Agarwal, Krishna
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Biological sciences

description: Multiple signal classification algorithm (MUSICAL) exploits temporal fluctuations in fluorescence intensity to perform super-resolution microscopy by computing the value of a super-resolving indicator function across a fine sample grid. A key step in the algorithm is the separation of the measurements into signal and noise subspaces, based on a single user-specified parameter called the threshold. The resulting image is strongly sensitive to this parameter and the subjectivity arising from multiple practical factors makes it difficult to determine the right rule of selection. We address this issue by proposing soft thresholding schemes derived from a new generalized framework for indicator function design. We show that the new schemes significantly alleviate the subjectivity and sensitivity of hard thresholding while retaining the super-resolution ability. We also evaluate the trade-off between resolution and contrast and the out-of-focus light rejection using the various indicator functions. Through this, we create significant new insights into the use and further optimization of MUSICAL for a wide range of practical scenarios.
description: 15 pages, 5 figures
Predominant Contribution of Direct Laser Acceleration to High-Energy Electron Spectra in a Low-Density Self-Modulated Laser Wakefield Accelerator
Creators: name: King, P. M.
name: Miller, K.
name: Lemos, N.
name: Shaw, J. L.
name: Kraus, B. F.
name: Thibodeau, M.
name: Hegelich, B. M.
name: Hinojosa, J.
name: Michel, P.
name: Joshi, C.
name: Marsh, K. A.
name: Mori, W.
name: Pak, A.
name: Thomas, A. G. R.
name: Albert, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The two-temperature relativistic electron spectrum from a low-density ($3\times10^{17}$~cm$^{-3}$) self-modulated laser wakefield accelerator (SM-LWFA) is observed to transition between temperatures of $19\pm0.65$ and $46\pm2.45$ MeV at an electron energy of about 100 MeV. When the electrons are dispersed orthogonally to the laser polarization, their spectrum above 60 MeV shows a forking structure characteristic of direct laser acceleration (DLA). Both the two-temperature distribution and the forking structure are reproduced in a quasi-3D \textsc{Osiris} simulation of the interaction of the 1-ps, moderate-amplitude ($a_{0}=2.7$) laser pulse with the low-density plasma. Particle tracking shows that while the SM-LWFA mechanism dominates below 40 MeV, the highest-energy ($>60$ MeV) electrons gain most of their energy through DLA. By separating the simulated electric fields into modes, the DLA-dominated electrons are shown to lose significant energy to the longitudinal laser field from the tight focusing geometry, resulting in a more accurate measure of net DLA energy gain than previously possible.
Molecular gas in nearby elliptical radio galaxies
Creators: name: Ocana-Flaquer, B.
name: Leon, S.
name: Lim, J.
name: Combes, F.
name: Dinh-V-Trung
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Powerful radio-AGN are hosted by massive elliptical galaxies which are usually very poor in molecular gas. Nevertheless the central Black Hole (BH) needs molecular gas for the nuclear activity. Thus it is important to study the origin, the distribution and the kinematics of the molecular gas in such objects. We have performed at the IRAM-30m telescope a survey of the CO(1-0) and CO(2-1) emission in the most powerful radio galaxies of the Local Universe, selected only on the basis of their radio continuum fluxes. The main result of that survey is the low content in molecular gas of such galaxies compared to Seyfert galaxies. The median value of the molecular gas mass is 4x10^8 Msun. Moreover, the CO spectra indicate the presence of a central molecular gas disk in some of these radio galaxies. We complemented this survey with photometric data of SPITZER and IRAS fluxes with the purpose to study the dust and its relation with the molecular gas and AGN.
description: 3 pages and 2 figures. Conference of "The Evolution of Galaxies through the Neutral Hydrogen Window" February 1-3, 2008 Arecibo Observatory, Puerto Rico
PHENIX cold QCD and spin measurements
Creators: name: Seidl, Ralf
Publisher: name: Zenodo
Year: 2024
Subjects: hp24
phenix
spin
helicity
longitudinal spin asymmetry
transverse spin asymmetry
p+p
gluon
photon
direct photon
cross section
isolated
forward-rapidity
η
qcd
hadron
heavy flavor
electron
p+al
p+au
π0
raa
nuclear
modification
mid-rapidity
backward-rapidity
d+au
3he+au
pion
kaon
proton
asymmetry
neutron
zdc

description: Talk presented at the Hard and Electromagnetic Probes of High-Energy Nuclear Collisions 202 conference
Higher-dimensional black holes with a conformally invariant Maxwell source
Creators: name: Hassaine, Mokhtar
name: Martinez, Cristian
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider an action for an abelian gauge field for which the density is given by a power of the Maxwell Lagrangian. In d spacetime dimensions this action is shown to enjoy the conformal invariance if the power is chosen as d/4. We take advantage of this conformal invariance to derive black hole solutions electrically charged with a purely radial electric field. Because of considering power of the Maxwell density, the black hole solutions exist only for dimensions which are multiples of four. The expression of the electric field does not depend on the dimension and corresponds to the four-dimensional Reissner-Nordstrom field. Using the Hamiltonian action we identify the mass and the electric charge of these black hole solutions.
description: 5 pages
Exploring reasons for popular support of spontaneous vigilantism
Creators: name: Arhin, Louise Gyasiwa
Publisher: name: The University of St Andrews
Year: 2025
Subjects: Mob justice
Police effectiveness
Police fairness
Legitimacy
Frontiers
Social norms
Legal pluralism
Spontaneous vigilantism
Right-wing authoritarianism

description: This thesis examines the reasons why people engage in spontaneous vigilantism, where it often takes place, why the act itself appears spontaneous, and whether there are individual differences in predicting support for it. Prior research, reviewed in chapters 2 and 3, has demonstrated that people mostly engage and/or support spontaneous vigilantism when law enforcement is not established or, even if established, are inadequate, ineffective and/or unfair. Some researchers like Brown (1975) see vigilantism as a positive act where citizens cooperate for self-protection under conditions of disorder (p.130). However, Sederberg & Rosenberg (1976) argue otherwise, maintaining that vigilantism is a form of politics with three purposes: crime control, social group control and regime change. Johnston (1996) thinks it is too broad a conceptualisation of vigilantism if actions of state authorities against its citizens are considered vigilantism. This thesis investigated vigilantism done with or on behalf of the state in the form of neighbourhood watches and informal vigilante groups (with a focus on the latter due to the spontaneous nature of their activities). Ethnographic research conducted in Ghana (chapter 4) finds that rather than mere police effectiveness (which was a factor), the existence of legal orders in one social field (termed legal pluralism) meant that residents chose who to resolve their cases for them. Claims of ineffective police, though true, were mainly a rhetorical strategy to legitimise community leaders. Surveys conducted in Ghana, Nigeria and the U.K. (chapter 5) find that pro-vigilantism norms, rather than police effectiveness or unfairness, predict participants’ support for vigilantism in all three countries. Survey evidence from the U.K. (chapter 6) finds that authoritarianism and having a dangerous worldview were the individual differences predicting support for spontaneous vigilantism and suggests that vigilantism thrives in frontiers by creating a dangerous worldview and predicting support for spontaneous vigilantism.
Searching for Supersymmetry: The $μν$SSM
Creators: name: Lopez-Fogliani, Daniel E.
name: Munoz, Carlos
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the role played by the '$μ$ from $ν$' supersymmetric standard model ($μν$SSM) in the search for supersymmetry. First, we discuss its theoretical motivation, that is the simultaneous solution of $μ$- and $ν$-problems through the introduction of right-handed neutrinos. The latter produces $R$-parity violation (RPV), giving rise to interesting signals of new physics. As by-products, in the $μν$SSM there are dark matter candidates, and electroweak baryogenesis can be realized. Then, we survey signals by which the model could be tested at the large hadron collider (LHC). In addition to the enlarged Higgs sector with sneutrinos, we put special emphasis in analyzing the intimate connection between the lightest supersymmetric particle (LSP) lifetime and the size of neutrino Yukawa couplings. Displaced vertices and/or multileptons are some of the interesting signatures that can be probed. Finally, we discuss possible extensions of the $μν$SSM such as the inclusion in the superpotential of the conventional trilinear lepton-number violating couplings, the addition of an extra $U(1)'$ gauge group to the symmetry of the standard model, or the reinterpretation of the Higgs doublets as a fourth family of leptons superfields motivating the existence of a fourth family of vector-like quark doublet superfields.
description: A short review of the $\mu \nu$SSM prepared by invitation for EPJ Special Topics on "Supersymmetry and Unification" -edited by U. Chattopadhyay and S. Roy- 42 pages, 7 figures
Democrinus rawsonii
Creators: name: Madeira, Patrícia
name: Kroh, Andreas
name: Cordeiro, Ricardo
name: De, António M.
name: Martins, Frias
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Crinoidea
Bourgueticrinida
Bathycrinidae
Democrinus
Democrinus rawsonii

description: Erroneous— Democrinus rawsonii (Pourtalès, 1874)   Reports for the Azores:
 non Rhizocrinus rawsoni Pourtalès, 1874 — Carpenter 1883b: 173–175, 1884: 262–269, pl. 9, figs. 3–5, pl. 10, figs. 3–20, pl. 53, figs. 7, 8 [misidentification of Democrinus parfaiti]; Koehler 1909: 255–256 [misidentification of Democrinus parfaiti]; Pérès 1992: 256 [misidentification of Democrinus parfaiti]; non Democrinus rawsonii (Pourtalès, 1874) — García–Diez et al. 2005: 46 [based on Koehler 1909].
 Type locality: Barbados.
 See: A.M. Clark (1977: 177).
 Occurrence: Western Atlantic, in the Caribbean waters.
 Depth: 66–652 m.
 Remarks: Democrinus rawsonii was recorded in the Azores based on the erroneous assumption that D. parfaiti was conspecific with this species (for details see remarks under D. parfaiti). In view of this, all reports of this comatulid in the archipelago should be considered as D. parfaiti.
description: Published as part of Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), pp. 1-231 in Zootaxa 4639 (1) on page 160, DOI: 10.11646/zootaxa.4639.1, http://zenodo.org/record/3342161
Dark Energy as a Critical Phenomenon: a Resolution for Hubble Tension
Creators: name: Banihashemi, Abdolali
name: Khosravi, Nima
name: Shafieloo, Arman
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose a dark energy model based on the physics of critical phenomena which is consistent with both the Planck's CMB and the Riess et al.'s local Hubble measurements. In this model the dark energy density behaves like the magnetization of the Ising model. This means the dark energy is an emergent phenomenon and we named it critically emergent dark energy model, CEDE. In CEDE, dark energy emerges at a transition redshift, $z_c$, corresponding to the critical temperature in critical phenomena. Combining the Planck CMB data and local measurement of the Hubble constant from Riess et al. (2019) we find statistically significant support for this transition with respect to the case of very early transition that represents effectively the cosmological constant. This is understandable since CEDE model naturally prefers larger values of Hubble constant consistent with local measurements. Since CEDE prefers a non-trivial transition when we consider both high redshift Planck CMB data and local Hubble constant measurements, we conclude that $H_0$ tension can be a hint for the substructure of the dark energy as a well-studied properties of critical phenomena.
description: 8 pages, 4 figures, 1 table. comments are welcome
Taking it to the streets : An activist’s story of the Vancouver housing crisis of 1989
Creators: name: Marcoux, Roneen
Publisher: name: University of British Columbia
Year: 2009

description: The Vancouver tenants' movement emerged in a context of changing urban land use. Influxes of foreign capital into Canadian real estate markets have resulted in dramatic increases in urban land values. In Vancouver, real estate developers seeking the best return on their investment have opted for condominium development as the most lucrative means of obtaining capital gains. The increased pressure on urban land for condominium development resulted in the demolition of thousands of rental units. In 1989 this wave of re-development reached critical proportions. Evicted tenants were finding it increasingly difficult to find alternative accommodation. Vacancy rates fell to an all time low as rents on remaining rental units skyrocketed. In response to this "Housing Crisis" Vancouver tenants joined together with neighbourhood associations, seniors, homeowners, community groups, churches and squatters to form a city-wide coalition, the Vancouver Housing Forum, aimed at stopping the demolition of affordable housing and slowing the pace of development in their neighbourhoods. This project offers a reflective analysis of the work done by tenant organizers and in particular of a specific community organizing initiative that impacted on the housing situation in Vancouver.
On a q-analog of a Sahi result
Creators: name: Bershtein, Olga
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B37, 20G42, 16S32

description: We obtain a $q$-analog of a well known Sahi result on the joint spectrum of $S(GL_n \times GL_n)$-invariant differential operators with polynomial coefficients on the vector space of complex $n \times n$-matrices.
description: 9 pages, some improvements in exposition have been made
Ιερός Ναός Παναγίας Κοσμοσώτηρας στις Φέρρες Αλεξανδρούπολης. Μελέτη αποτίμησης φέρουσας ικανότητας του Ναού και διερεύνηση μεθόδων αποκατά
Creators: name: Τεντώνης, Γεώργιος Θωμά
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Κοσμοσώτηρα
Αποκατάσταση
Αλεξανδρούπολη
Kosmosotira
Restoration
Alexandroupolis

description: Σκοπός της διατριβής ήταν η μελέτη του Ιερού Ναού της Παναγίας Κοσμοσώτηρας στις Φέρρες Αλεξανδρούπολης. Αρχικά εξετάστηκαν τα ιστορικά και αρχιτεκτονικά στοιχεία του Ναού, ώστε να αποκτηθεί μια συνολική κατά το δυνατόν εικόνα για το μνημείο. Εν συνεχεία παρουσιάστηκαν στοιχεία για τις προηγούμενες επεμβάσεις που έγιναν στο μνημείο, καθώς και μελετών προηγούμενων ετών. Το κύριο μέρος της διατριβής ασχολήθηκε με τη στατική και δυναμική ανάλυση του Ναού, την αποτίμηση της υπάρχουσας κατάστασής του μέσω μοντέλων προσομοίωσης, αλλά και τη μελέτη του σε ενδεχόμενο αφαίρεσης των εξωτερικών αντηρίδων που τοποθετήθηκαν τη δεκαετία του 1930. Στο τελευταίο μέρος της διατριβής γίνεται αναφορά στα εξαγόμενα συμπεράσματα από τη στατική ανάλυση της κατασκευής και προτείνονται επεμβάσεις στο μνημείο, οι οποίες είναι αντιστρέψιμες και σύμφωνες με τις γενικές αρχές αποκατάστασης των μνημείων.
description: The aim of the present thesis was the study of the Holy Temple of Panagia Kosmosotira in Ferrai Alexandroupolis. At first we examined the historical and architectural data of the Temple so as the reader to obtain an overall picture of the monument. Thereafter, data were presented related to previous interventions as well as studies that carried out in previous years. The main part of this thesis dealt with the static and dynamic analysis of the Temple, to assess the existing situation through simulation models and the study of a potential removal of the external trusses placed in the 1930s. The final part of this thesis refers the conclusions drawn from the static analysis of the structure and interventions are proposed for the monument, which is reversible and consistent with the general principles of monument preservation.
Wigner functions, contact interactions, and matching
Creators: name: Walton, Mark A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum mechanics in phase space (or deformation quantization) appears to fail as an autonomous quantum method when infinite potential walls are present. The stationary physical Wigner functions do not satisfy the normal eigen equations, the *-eigen equations, unless an ad hoc boundary potential is added [Dias-Prata]. Alternatively, they satisfy a different, higher-order, ``*-eigen-* equation'', locally, i.e. away from the walls [Kryukov-Walton]. Here we show that this substitute equation can be written in a very simple form, even in the presence of an additional, arbitrary, but regular potential. The more general applicability of the -eigen- equation is then demonstrated. First, using an idea from [Fairlie-Manogue], we extend it to a dynamical equation describing time evolution. We then show that also for general contact interactions, the -eigen- equation is satisfied locally. Specifically, we treat the most general possible (Robin) boundary conditions at an infinite wall, general one-dimensional point interactions, and a finite potential jump. Finally, we examine a smooth potential, that has simple but different expressions for x positive and negative. We find that the -eigen- equation is again satisfied locally. It seems, therefore, that the -eigen- equation is generally relevant to the matching of Wigner functions; it can be solved piece-wise and its solutions then matched.
description: 20 pages, no figures
Endoxocrinus (Diplocrinus) wyvillethomsoni
Creators: name: Madeira, Patrícia
name: Kroh, Andreas
name: Cordeiro, Ricardo
name: De, António M.
name: Martins, Frias
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Crinoidea
Isocrinida
Pentacrinitidae
Endoxocrinus
Endoxocrinus wyvillethomsoni

description: Erroneous— Endoxocrinus (Diplocrinus) wyvillethomsoni (Thomson 1872a)   Reports for the Azores:
 Endoxocrinus Wyvillethomsoni (Thomson, 1872a) —A.H. Clark 1911: 45–46;
 Annacrinus wyvillethomsoni (Jeffreys, nomen nudum; Thomson, 1872a)— Macurda & Roux 1981: 169–219, pl. 7, figs. 1–10, pl. 8, figs. 1–9, pl. 9, figs. 1–12, pl. 10, figs. 1–9, pl. 11, figs. 1–8, pl. 12, figs. 1–12, pl. 13, figs. 1–10, pl. 14, figs. 1–9;
 Endoxocrinus (Diplocrinus) wyvillethomsoni (Jeffreys, 1870) — Mironov et al. 2014: 117.
 Type locality: off Portugal (39°42’N, 9°43’W).
 See: Macurda & Roux (1981); David et al. (2006: 39–40, figs. 17, 19b, 20d).
 Occurrence: Northeast Atlantic, from the Bay of Biscay to Morocco, including the archipelagos of Madeira and Canaries (A.H. Clark 1911, 1923).
 Depth: 1,214(?900)– 2,070 m (David et al. 2006).
 Habitat: on various substrates and under a variety of hydrodynamic conditions (Roux 1985, David et al. 2006).
 Remarks: we do not know on what basis A.H. Clark (1911) listed the Azores among the localities where Endoxocrinus wyvillethomsoni could be found. Surprisingly, he remarks that?Bell may have confused Ferne Islands (British Channel) with Faial Island (Azores), since this species was not known to occur in the former area. Thus, the presence of E. wyvillethomsoni in the archipelago seems to be a result of A.H. Clark’s interpretation on a possible mistype by Bell. In later works by the same author (e.g., A.H. Clark 1923), the Azores was never again included in the geographical range of this species. A subsequent reference to the archipelago by Macurda & Roux (1981) was based on A.H. Clark (1911) instead of A.H. Clark (1923) cited by the authors. Overall, to our knowledge no specimens belonging to E. wyvillethomsoni from the Azores were ever documented and thus its historical inclusion in the fauna of the archipelago should be considered erroneous. Additionally, Jeffreys (in Carpenter & Jeffreys 1871) was the first author to name this deep-water crinoid. However, in a review by Macurda & Roux (1981), Jeffrey’s name was considered nomen nudum. For this reason, they appointed a later reference by Thomson (1872a: 767–769) in which this species is fully described, a view followed herein.
description: Published as part of Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), pp. 1-231 in Zootaxa 4639 (1) on pages 160-161, DOI: 10.11646/zootaxa.4639.1, http://zenodo.org/record/3342161
Speech perception in noise in the elderly: the effect of text type
Creators: name: Lee, Grace May
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of the present study was to examine how age-related changes in hearing and cognition contribute to the poor speech perception performance in noise observed in elderly listeners. Passages of two different text types were presented in +6, 0, and -6 dB signal-to-noise conditions to eight normal-hearing elderly listeners. Highly structured narratives and less structured descriptions were presented in a clause-by-clause fashion using a modified tracking procedure. Subjects repeated what they heard verbatim. The number and types of errors were analyzed. It was found that elderly listeners made more errors as listening conditions became less favourable. Moreover, elderly subjects made more errors for descriptions than for narratives. It seems that the subjects were able to benefit from the supportive context, which was available to a greater extent in the narratives than in the descriptions, in order to compensate for the degraded auditory signal. These results were then compared to a previous study that examined the speech perception performance of younger, normal-hearing adults in the same conditions. It was found that elderly listeners performed more poorly than younger adult listeners as noise increased, regardless of text type. This finding is likely due to age-related declines in auditory processing abilities. Importantly, there were no age differences in the utilization of supportive context, suggesting that elderly listeners take advantage of text structure to the same extent as do young listeners.
Non-interacting coronal mass ejections and solar energetic particles near the quadrature configuration of Solar TErrestrial RElations Observatory
Creators: name: Ravishankar, Anitha
name: Michalek, Grzegorz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present our results on the correlation of non-interacting coronal mass ejections (CMEs) and solar energetic particles (SEPs). A statistical analysis was conducted on 25 SEP events and the associated CME and flare during the ascending phase of solar cycle 24, i.e., 2009-2013, which marks the quadrature configuration of Solar TErrestrial RElations Observatory (STEREO). The complete kinematics of CMEs is well studied near this configuration of STEREO. In addition, we have made comparison studies of STEREO and SOlar and Heliospheric Observatory (SOHO) results. It is well known that the CME speeds and SEP intensities are closely correlated. We further examine this correlation by employing instantaneous speeds (maximum speed and the CME speed and Mach number at SEP peak flux) to check whether they are a better indicator of SEP fluxes than the average speed. Our preliminary results show a better correlation by this approach. In addition, the correlations show that the fluxes of protons in energy channel >10 MeV are accelerated by shock waves generated by fast CMEs, whereas the particles of >50 MeV and >100 MeV energy bands are mostly accelerated by the same shock waves but partly by the associated flares. In contrast, the X-ray flux of solar flares and SEP peak flux show a poor correlation.
description: 12 pages, 11 figures
Magneto-elastic effects and magnetization plateaus in two dimensional systems
Creators: name: Bissola, Samuele
name: Lante, Valeria
name: Parola, Alberto
name: Becca, Federico
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show the importance of both strong frustration and spin-lattice coupling for the stabilization of magnetization plateaus in translationally invariant two-dimensional systems. We consider a frustrated spin-1/2 Heisenberg model coupled to adiabatic phonons under an external magnetic field. At zero magnetization, simple structures with two or at most four spins per unit cell are stabilized, forming dimers or $2 \times 2$ plaquettes, respectively. A much richer scenario is found in the case of magnetization $m=1/2$, where larger unit cells are formed with non-trivial spin textures and an analogy with the corresponding classical Ising model is detectable. Specific predictions on lattice distortions and local spin values can be directly measured by X-rays and Nuclear Magnetic Resonance experiments.
description: 4 pages and 4 figures
Punctures and p-spin curves from matrix models II
Creators: name: Hikami, S.
name: Brezin, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We report here an extension of a previous work in which we have shown that matrix models provide a tool to compute the intersection numbers of p-spin curves. We discuss further an extension to half-integer p, and in more details for p=1/2 and p=3/2. In those new cases one finds contributions from the Ramond sector, which were not present for positive integer p.The existence of Virasoro constraints, in particular a string equation, is considered also for half-integral spins. The contribution of the boundary of a Riemann surface, is investigated through a logarithmic matrix model The supersymmetric random matrices provide extensions to mixed positive and negative p punctures.
description: 27 pages
Επιστημονική-Διδακτική Καθοδήγηση της Θρησκευτικής Αγωγής στη Δημοτική Εκπαίδευση
Creators: name: Ταμβάκης, Παναγιώτης Ονούφριου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Καθοδήγηση
Θρησκευτικά Εκπαίδευση
Guidance
Religious Education

description: Η σημασία της παιδαγωγικής και επιστημονικής (θεολογικής) καθοδήγησης της θρησκευτικής αγωγής στο δημοτικό σχολείο έγκειται κυρίως στα εξής: αφ’ ενός στην αναγκαιότητα να αρθούν οι παρεξηγήσεις και να αναγνωριστεί η σημαντικότητα της θέσης και του έργου, του ρόλου της θρησκευτικής αγωγής στο σύγχρονο ελληνικό σχολείο και αφ’ ετέρου στην αναγκαιότητα να ληφθούν σοβαρά υπόψη οι ιδιαιτερότητες της θρησκευτικής αγωγής στο δημοτικό σχολείο, κυρίως όσον αφορά στον ρόλο των εκπαιδευτικών της δημοτικής εκπαίδευσης που διδάσκουν το μάθημα των θρησκευτικών και ασκούν γενικότερα θρησκευτική αγωγή. Η σημαντικότητα του ρόλου της θρησκευτικής αγωγής έχει πλέον αναγνωριστεί πέραν των ορίων του θρησκευτικού ή του αντιθρησκευτικού φανατισμού ως θρησκευτικός γραμματισμός απαραίτητος για τον σύγχρονο, υπεύθυνο και δημοκρατικό πολίτη που αποτελεί σκοπό της αγωγής και της κρατικής εκπαίδευσης. Κύριος παράγοντας τόσο για την ανάδειξη της σημαντικότητας της θρησκευτικής αγωγής γενικότερα όσο και ειδικότερα στην πρωτοβάθμια εκπαίδευση για την καθοδήγηση (υποστήριξη κατά τη διάρκεια της μαθησιακής διαδικασίας και επιμόρφωση) των δασκάλων, αποδεικνύεται, με την παρούσα εργασία, ο Σχολικός ή η Σχολική Σύμβουλος Δημοτικής Εκπαίδευσης που ασκεί την γενική παιδαγωγική και επιστημονική καθοδήγηση των εκπαιδευτικών αυτών.
description: The importance of pedagogical and scientific (theological) guidance of Religious Education in the Primary School lies mainly in the following factors: Firstly, in the necessity to remove misunderstandings so that the importance of the position, work and role of Religious Education in the contemporary Greek school can be recognised. Secondly, in the necessity to take the particularities of Religious Education into consideration and especially with regard to the role of primary school teachers who teach the subject of Religious Education and in general they practise Religious Education. The importance, on the other hand, of the role of Religious Education has already been recognised beyond the religious or anti-religious fanaticism as religious literacy necessary for the contemporary, responsible and democratic citizen which constitutes a purpose of education and state schooling. The main factor to launch the importance of RE in general and in particular in Primary Education for the guidance (support during the learning process and training) of the teachers proves to be, through this paper, the School Counsellor of Primary Education who exercises the general pedagogical and scientific guidance of the aforementioned teachers.
Amphiura chiajei Forbes 1843
Creators: name: Madeira, Patrícia
name: Kroh, Andreas
name: Cordeiro, Ricardo
name: De, António M.
name: Martins, Frias
name: Ávila, Sérgio P.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Echinodermata
Ophiuroidea
Ophiurida
Amphiuridae
Amphiura
Amphiura chiajei

description: Erroneous— Amphiura chiajei Forbes, 1843   Reports for the Azores:
 Amphiura chiajei Forbes, 1843 — Mortensen 1927a: 212–213, figs. 117, 120.1–2; Grieg 1932: 37; Nobre 1938: 84, fig. 41.1; Tortonese 1965: 224–227, figs. 105–106; Fenaux 1970: 262–271, figs. 1–5; Moyse & Tyler 1995: 67, fig. 12.7; Micael & Costa 2010: 322; Micael et al. 2012: 3.
 Type locality: Aegean Sea, Mediterranean Sea.
 See: Forbes (1843: 150, pl. 14, figs. 8–13); Madsen (1970: 167–168, figs. 4–5a); Paterson (1985: 87–88, fig. 34).
 Occurrence: Mediterranean Sea and Northeast Atlantic, from Scandinavia to the southern coast of Angola (Mortensen 1927a, 1936, Tortonese 1965), including the Canaries (Bacallado et al. 1985) and Madeira (Jesus & Abreu 1998).
 Depth: 2– 1,250 m (Cherbonnier 1970, Koukouras et al. 2007).
 Habitat: soft sediments (sand, mud to silt) and among algae (Koukouras et al. 2007, Tortonese 1965); lives buried in the sediment with the arms extended above the surface feeding on deposited material (Picton 1993).
 Larval stage: lecithotrophic (Fenaux 1970).
 Remarks: both Mortensen (1927a) and Grieg (1932) have listed the Azores under the geographical range of Amphiura chiajei. However, to the best of our knowledge no specimen belonging to this species was ever recorded from the archipelago. In view of this, the inclusion of A. chiajei in the Azorean fauna by those authors appears to be a misprint and should be dismissed as erroneous.
description: Published as part of Madeira, Patrícia, Kroh, Andreas, Cordeiro, Ricardo, De, António M., Martins, Frias & Ávila, Sérgio P., 2019, The Echinoderm Fauna of the Azores (NE Atlantic Ocean), pp. 1-231 in Zootaxa 4639 (1) on pages 161-162, DOI: 10.11646/zootaxa.4639.1, http://zenodo.org/record/3342161
Mechanical characterization of brain tissue in simple shear at dynamic strain rates
Creators: name: Rashid, Badar
name: Destrade, Michel
name: Gilchrist, Michael D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: During severe impact conditions, brain tissue experiences a rapid and complex deformation, which can be seen as a mixture of compression, tension and shear. Moreover, diffuse axonal injury (DAI) occurs in animals and humans when both the strains and strain rates exceed 10% and 10/s, respectively. Knowing the mechanical properties of brain tissue in shear at these strains and strain rates is thus of particular importance, as they can be used in finite element simulations to predict the occurrence of brain injuries under different impact conditions. In this research, an experimental setup was developed to perform simple shear tests on porcine brain tissue at strain rates < 120/s. The maximum measured shear stress at strain rates of 30, 60, 90 and 120/s was 1.15 +/- 0.25 kPa, 1.34 +/- 0.19 kPa, 2.19 +/- 0.225 kPa and 2.52 +/- 0.27 kPa, (mean +/- SD), respectively, at the maximum amount of shear, K = 1. Good agreement of experimental, theoretical (Ogden and MooneyRivlin models) and numerical shear stresses was achieved (p = 0.7866 - 0.9935). Specimen thickness effects (2.0 - 10.0 mm thick specimens) were also analyzed numerically and we found that there is no significant difference (p = 0.9954) in the shear stress magnitudes, indicating a homogeneous deformation of the specimens during simple shear tests. Stress relaxation tests in simple shear were also conducted at different strain magnitudes (10% - 60% strain) with the average rise time of 14 ms. This allowed us to estimate elastic and viscoelastic parameters (mu = 4942.0 Pa and Prony parameters: g1 = 0.520, g2 = 0.3057, tau1 = 0.0264 s, tau2 = 0.011 s) that can be used in FE software to analyze the hyperviscoelastic behavior of brain tissue.
description: arXiv admin note: text overlap with arXiv:1302.4535, arXiv:2009.00974
Uncertainties in the $0νββ$--decay nuclear matrix elements
Creators: name: Rodin, Vadim
name: Faessler, Amand
name: Simkovic, Fedor
name: Vogel, Petr
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The nuclear matrix elements $M^{0ν}$ of the neutrinoless double beta decay ($0νββ$) of most nuclei with known $2νββ$-decay rates are systematically evaluated using the Quasiparticle Random Phase Approximation (QRPA) and Renormalized QRPA (RQRPA). The experimental $2νββ$-decay rate is used to adjust the most relevant parameter, the strength of the particle-particle interaction. With such procedure the $M^{0ν}$ values become essentially independent on single-particle basis size, the axial vector quenching factor, etc. Theoretical arguments in favor of the adopted way of determining the interaction parameters are presented. It is suggested that most of the spread among the published $M^{0ν}$'s can be ascribed to the choices of implicit and explicit parameters, inherent to the QRPA method.
description: 9 pages, 1 figure. Contribution to MEDEX'05, Corfu, Greece, September 26 - 29, 2005. A short version of nucl-th/0503063, to be published in Czech. J. Phys