cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Charged polytropic compact stars
Creators: name: Ray, Subharthi
name: Malheiro, Manuel
name: Lemos, Jose' P. S.
name: Zanchin, Vilson T
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, we analyze the effect of charge in compact stars considering the limit of the maximum amount of charge they can hold. We find that the global balance of the forces allows a huge charge (~ 10^{20} Coulomb) to be present in a neutron star producing a very high electric field (~ 10^{21} V/m). We have studied the particular case of a polytropic equation of state and assumed that the charge distribution is proportional to the mass density. The charged stars have large mass and radius as we should expect due to the effect of the repulsive Coulomb force with the M/R ratio increasing with charge. In the limit of the maximum charge the mass goes up to ~ 10 M_sun which is much higher than the maximum mass allowed for a neutral compact star. However, the local effect of the forces experienced by a single charged particle, makes it to discharge quickly. This creates a global force imbalance and the system collapses to a charged black hole.
Supporting Cultural Rights and Indigenous Sovereignty through Archival Repatriation
Creators: name: Sorensen, Amanda H.
name: Bull, Ia
name: Marsh, Diana
name: Lee, Samantha
Publisher: name: PoLAR: Political and Legal Anthropology Review
Year: 2024
Subjects: repatriation
Indigenous knowledge
legal anthropology
Indigenous data sovereignty
archives
NAGPRA
digital returns
archival repatriation
traditional knowledge
community archives
shared stewardship
ownership

description: Primary source materials are irreplaceable cultural resources for the communities in which they originated, particularly when they derive from Native and Indigenous communities (Parezo 1999). These communities have been disenfranchised from their own information, data, and knowledge through the evidentiary and collecting practices of historical anthropological researchers, as well as the actions of archives, museums, and other collecting institutions. Knowledge extraction, wherein practitioners collect data for their own uses without appreciation of originating community perspectives or needs to access the data, was frequent in the early years of the discipline (First Archivists Circle 2007; Christen and Anderson 2019, 92-3). This localized information (regarding religious or ceremonial practices, for example) was dispersed to archives worldwide via what scholars have called an “archival diaspora” (Punzalan 2014a), effectively removing archives from the hands of originating communities. Furthermore, anthropologists have at times created field records in the context of assimilation and genocide, or through imbalanced and unethical power relations (O’Neal 2014). These historical factors underscore the ethical responsibility of archivists and data curators to provide community access to archival and unpublished information. There is a strong need for political and legal anthropologists, cultural heritage professionals, and policy writers to not only center human rights in ongoing research, but also to place Indigenous Knowledge Systems at the core of their efforts (O’Neal 2019, 50). We argue that the repatriation of archival materials (including physical repatriation but also encompassing ownership transfer or shared stewardship) is crucial to protecting “moral and material interests” embedded in community knowledge, language, storytelling, survivance, and the wider “cultural life of the community” (United Nations 2007).
Hydrodynamic simulations unravel the progenitor-supernova-remnant connection in SN 1987A
Creators: name: Orlando, S.
name: Ono, M.
name: Nagataki, S.
name: Miceli, M.
name: Umeda, H.
name: Ferrand, G.
name: Bocchino, F.
name: Petruk, O.
name: Peres, G.
name: Takahashi, K.
name: Yoshida, T.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: (Abridged) We aim at linking the dynamical and radiative properties of the remnant of SN 1987A to the geometrical and physical characteristics of the parent aspherical SN explosion and to the internal structure of its progenitor star. We performed 3D hydrodynamic simulations which describe the long-term evolution of SN 1987A from the onset of the SN to the full-fledged remnant at the age of 50 years, accounting for the pre-SN structure of the progenitor star. The simulations include all physical processes relevant for the complex phases of SN evolution and for the interaction of the SNR with the highly inhomogeneous ambient environment around SN 1987A. From the simulations, we synthesize observables to be compared with observations. By comparing the model results with observations, we constrained the initial SN anisotropy causing Doppler shifts observed in emission lines of heavy elements from ejecta, and leading to the remnant evolution observed in the X-ray band in the last 30 years. In particular, we found that the high mixing of ejecta unveiled by high redshifts and broadenings of [FeII] and $^{44}$Ti lines require a highly asymmetric SN explosion channeling a significant fraction of energy along an axis almost lying in the plane of the central equatorial ring around SN 1987A, roughly along the line-of-sight but with an offset of 40 deg, with the lobe propagating away from the observer slightly more energetic than the other. We found unambiguously that the observed distribution of ejecta and the dynamical and radiative properties of the SNR can be best reproduced if the structure of the progenitor star was that of a blue supergiant resulted from the merging of two massive stars.
description: Accepted for publication in Astronomy & Astrophysics, 20 pages, 13 figures, 5 tables
Gnumyia Bezzi 1921
Creators: name: Greathead, David J.
Publisher: name: Zenodo
Year: 2006
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bombyliidae
Gnumyia

description: Gnumyia Bezzi
 Gnumyia Bezzi, 1921a: 82.
description: Published as part of Greathead, David J., 2006, New records of Namibian Bombyliidae (Diptera), with notes on some genera and descriptions of new species, pp. 1-88 in Zootaxa 1149 (1) on page 59, DOI: 10.11646/zootaxa.1149.1.1, http://zenodo.org/record/5058081
Toward reconstruction of dynamics of the Universe from distant supernovae type Ia
Creators: name: Szydlowski, Marek
name: Czaja, Wojciech
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We demonstrate a model-independent method of estimating qualitative dynamics of an accelerating universe from observations of distant type Ia supernovae. Our method is based on the luminosity-distance function, optimized to fit observed distances of supernovae, and the Hamiltonian representation of dynamics for the quintessential universe with a general form of equation of state $p=w(a(z))ρ$. Because of the Hamiltonian structure of FRW dynamics with the equation of state $p = w(a(z)) ρ$, the dynamics is uniquelly determined by the potential function $V(a)$ of the system. The effectiveness of this method in discrimination of model parameters of Cardassian evolution scenario is also given. Our main result is the following, restricting to the flat model with the current value of $Ω_{m,0}=0.3$, the constraints at $2σ$ confidence level to the presence of $ρ^{n}$ modification of the FRW models are $-0.50 \lesssim n \lesssim 0.36$.
description: 15 pages, 12 figures, RevTeX4
Lasioglossum (Sphecodogastra) intermedium
Creators: name: Gaspar, Hugo
name: Flaminio, Simone
name: Soares, Albano
name: Rufino, Cristina
name: Loureiro, João
name: Castro, Sílvia
name: Wood, Thomas J.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Lasioglossum
Lasioglossum intermedium

description: Lasioglossum (Sphecodogastra) intermedium (Schenck, 1868)
New data.
Portugal • Lisboa; 1876–1910; 1 ♀ (ZOO.0031986); det. S. Flaminio • Coimbra, Coimbra, Ponte da Portela; 09. iv. 1968; 1 ♀ (ZOO.0028768, Fig. 3 C); det. S. Flaminio, leg. M. A. Diniz • Coimbra, Coimbra, Pinhal de Marrocos; 10. iv. 1968; 1 ♀ (ZOO.0028772); 07. v. 1968; 1 ♀ (ZOO.0028802, UMONS); det. S. Flaminio, leg. M. A. Diniz • Porto, Amarante; 16. vii. 1969; 1 ♀ (ZOO.0020259); det. S. Flaminio, leg. M. A. Diniz.
Remarks.
Prior to the publication of these records here, this species had very scarce records in Iberia (Ortiz-Sánchez and Pauly 2017; Fidalgo et al. 2020). This finding expands considerably the distribution of this species westwards in the Iberian Peninsula.
Distribution.
Central and northern regions.
description: Published as part of Gaspar, Hugo, Flaminio, Simone, Soares, Albano, Rufino, Cristina, Loureiro, João, Castro, Sílvia & Wood, Thomas J., 2025, New data from the historical bee collection (Hymenoptera, Anthophila) of the Science Museum of the University of Coimbra and additional faunistic updates for Portugal, pp. 165-194 in Journal of Hymenoptera Research 98 on pages 165-194, DOI: 10.3897/jhr.98.142965
Search for resonant sneutrino production at sqrt(s) = 183 to 208 GeV
Creators: name: The DELPHI Collaboration
name: Abdallah, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Searches for resonant sneutrino production in e+e- collisions under the assumption that R-parity is not conserved and that the dominant R-parity violating coupling is lambda_{121} or lambda_{131} used data recorded by DELPHI in 1997 to 2000 at centre-of-mass energies of 183 to 208 GeV. No deviation from the Standard Model was observed. Upper limits are given for the lambda_{121} and lambda_{131} couplings as a function of the sneutrino mass and total width. The limits are especially stringent for sneutrino masses equal to the centre-of-mass energies with the highest integrated luminosities recorded.
description: 21 pages, 8 figures, Accepted by Eur. Phys. J. C
Αστρικές αποκρύψεις στη μετά Gaia εποχή
Creators: name: Τσαβδαρίδης, Σωτήριος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Αποκρύψεις
Αστεροειδείς
Απόφις
Occultations
Asteroids
Apophis

description: Η καταγραφή και μελέτη των αστεροειδών αποτελεί σήμερα έναν από τους πλέον διαδεδομένους και δημοφιλείς στόχους επαγγελματιών αλλά και ερασιτεχνών αστρονόμων. Με τη χρήση τηλεσκοπίων και ειδικού εξοπλισμού, είμαστε σε θέσει μελετήσουμε τις τροχιές τους κι ορισμένα από χαρακτηριστικά τους. Η κατεξοχήν εφαρμοσμένη μέθοδος είναι αυτή των αστρικών αποκρύψεων. Βασιζόμενοι στη μέθοδο της απόκρυψης μπορούμε να μετρήσουμε απ’ ευθείας το μέγεθος και το σχήμα του αστεροειδή. Σε αυτό έχει συνεισφέρει τα μέγιστα και η αποστολή Gaia, χάρη στην οποία γνωρίζουμε με ακρίβεια τη θέση περισσότερων από 1.6x10^9 αστέρων. Στην παρούσα εργασία, έχουμε στόχο την καταγραφή δύο συγκεκριμένων αστρικών αποκρύψεων από τους αστεροειδείς Απόφις και Δίδυμος, χρησιμοποιώντας συγκεκριμένο εξοπλισμό. Αρχικά θα μελετήσουμε τις δυνατότητες του υπάρχοντος εξοπλισμού με μια βαθμονόμηση πεδίου, ώστε να είμαστε σε θέση για την καταγραφή αυτών αλλά και οποιοδήποτε άλλων αποκρύψεων. Κατά τη διαδικασία αυτή συλλέγουμε πειραματικές μετρήσεις πεδίου και αναλύουμε τα αποτελέσματα. Στη συνέχεια θα μελετήσουμε τις δύο προαναφερθείσες περιπτώσεις, οι οποίες κατέληξαν σε αρνητική καταγραφή. Περιγράφεται η πλήρης διαδικασία εντοπισμού και καταγραφής τους με παρουσίαση των αποτελεσμάτων. Στο τελευταίο σκέλος της εργασίας θα παρουσιάσουμε την επιτυχημένη καταγραφή απόκρυψης από τον αστεροειδή (5772) Johnlambert, με έναν ενδεικτικό υπολογισμό της διαμέτρου του
description: The recording and study of asteroids is on these days one of the most widespread and popular goals of professional and amateur astronomers. Using telescopes and special equipment, we are able to study their orbits and some of their characteristics. The preeminent method is that of stellar occultations. Based on the method of stellar occultation, we can directly measure the size and shape of the asteroid. The Gaia mission has also contributed the most to this, thanks to which we know the exact location of more than 1.6x10 ^ 9 stars. In this thesis, we aim to record two specific stellar occultations, those from the asteroids Apophis and Didymos, using specific equipment. At first we will study the capabilities of the existing equipment with some field calibration by star measurements, so that we are able to record these and any other occultations. During this process we collect data by experimental field measurements and analyze the results. Next we will study the two aforementioned cases, which resulted in a negative recording. The complete process of locating and recording them is described and we are presenting the results. Finally, we will present a successful occultation event by the asteroid (5772) Johnlambert, with an indicative calculation of its diameter
Intensity-Modulated Fiber-Optic Voltage Sensors for Power Distribution Systems
Creators: name: Lukens, Joseph M.
name: Lagakos, Nicholas
name: Kaybulkin, Victor
name: Vizas, Christopher J.
name: King, Daniel J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We design, test, and analyze fiber-optic voltage sensors based on optical reflection from a piezoelectric transducer. By controlling the physical dimensions of the device, we can tune the frequency of its natural resonance to achieve a desired sensitivity and bandwidth combination. In this work, we fully characterize sensors designed with a 2 kHz characteristic resonance, experimentally verifying a readily usable frequency range from approximately 10 Hz to 3 kHz. Spectral noise measurements indicate detectable voltage levels down to 300 mV rms at 60 Hz, along with a full-scale dynamic range of 60 dB, limited currently by the readout electronics, not the inherent performance of the transducer in the sensor. Additionally, we demonstrate a digital signal processing approach to equalize the measured frequency response, enabling accurate retrieval of short-pulse inputs. Our results suggest the value and applicability of intensity-modulated fiber-optic voltage sensors for measuring both steady-state waveforms and broadband transients which, coupled with the straightforward and compact design of the sensors, should make them effective tools in electric grid monitoring.
DEVELOPMENT OF AN INNOVATION POSSIBILITY FRONTIER FOR PURPOSES OF RESEARCH PLANNING AND EVALUATION
Creators: name: Klein, K.K.
name: Kehrberg, E.W.
name: Klein, K.K.
name: Kehrberg, E.W.
Publisher: name: Unknown
Year: 1977
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Agricultural research activities can be planned and evaluated on the basis of an Innovation Possibility Frontier. Procedures for estimating such a frontier (to be employed in a normative context) are developed. Its uses for screening projects and for sensitivity analyses are emphasized.
title: Nitrous oxide release from agricultural riparian ecosystems
Creators: name: Machefert, Séverine
Publisher: name: The Open University
Year: 2005

description: The closed chamber technique and acetylene inhibition method were applied to the investigation of the environmental factors controlling nitrous oxide (N2O) emissions in the field and denitrification, both in situ and in the laboratory, from agricultural riparian ecosystems. N2O emissions were measured along with environmental factors weekly to fortnightly over a whole year and were found to be mainly controlled by water-filled pore space (WFPS) and soil temperature with a threshold response at 35% WFPS and 8°C, below which N2O emissions were very low. Nitrate (NO3) was not a limiting factor at either of the two experimental sites. There was also a ‘threshold’ effect of rainfall, in which major rainfall events (> 10mm) triggered a pulse of high N2O emission if none of the other environmental factors were limiting. The best model for denitrification in riparian ecosystems included water-filled pore space as the main explanatory variable and soil nitrate. Denitrification rates were measured in an intact riparian site and were exponentially correlated to the water-filled pore space of the soil. A threshold response at 60-80% WFPS was also found. The absolute denitrification rate was also related to the soil NO3 concentration. Annual denitrification fluxes were determined on different levels of the riparian zone and were 5.0 and 4.8 kg N ha-1 at the intermediate and upper levels respectively, farthest from the stream surface where the moisture status of the soil was not significantly different and 71.7 kg N ha-1 at the near-stream site where the soil moisture was higher. These results were used to calibrate the INCA model and run an advance version of the model, INCA-N Riparian in order to predict denitrification rates in riparian ecosystems. Annual denitrification rates were well simulated in response to moisture changes.
A MODEL FOR DETERMINING OPTIMAL MULTI-NATIONAL EXPLOITATION OF A MARINE FISHERY
Creators: name: Altobello, Marilyn A.
name: Conrad, Jon M.
name: Altobello, Marilyn A.
name: Conrad, Jon M.
Publisher: name: Unknown
Year: 1977
Subjects: Resource /Energy Economics and Policy

description: The marine fishery is an example of a renewable common property resource and as such, exhibits a distinguishing characteristic which results in unusual economic implications. More precisely, ownership of or property rights to the common property resource are not clearly defined. Thus the resource can be exploited by more than one economic agent, and in the case of the marine fishery, by more than one nation. Furthermore, no single vessel owner or nation can prevent another from harvesting a particular fishery resource.
Shedding light on El Farol
Creators: name: Challet, Damien
name: Marsili, Matteo
name: Ottino, Gabriele
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We mathematize El Farol bar problem and transform it into a workable model. In general, the average convergence to optimality at the collective level is trivial and does not even require any intelligence on the side of agents. Secondly, specializing to a particular ensemble of continuous strategies yields a model similar to the Minority Game. Statistical physics of disordered systems allows us to derive a complete understanding of the complex behavior of this model, on the basis of its phase diagram.
description: 8 pages, 5 figures
Dissemination and Communication Strategy - D8.1
Creators: name: Claridge, Nigel
name: Ganse, Yasmina
Publisher: name: Zenodo
Year: 2020
Subjects: Dissemination, Communication, stakeholders, multi-channel, AI, Big Data, Electrical distribution grids

description: The overall scope of BD4OPEM is to create an open innovation marketplace where, using an AI-driven analytic toolbox to process Big Data, unique and innovative services developed during the project will be made available to stakeholders to enhance existing practices for the monitoring, operation, maintenance and planning of electrical distribution grids. The objective of dissemination and communication is to ensure that the results of the project are disseminated appropriately to defined stakeholders and target groups. A multi-channel approach will be adopted to engage stakeholders and target groups, with awareness-raising activities being carried out to reach all other project beneficiaries. The planned strategy outlined in this document will:
 • Raise awareness among target groups and stakeholders
 • Demonstrate project outcome impact on services, employment and economy.
 • Strengthen internal and external communication
 • Support post-project sustainability and market uptake of solutions produced. The Dissemination and Communication Strategy contains a plan required to fullfil project communication objectives. The document describes all actions to be taken, partner and collaborator responsibilities, timelines and communication guidelines. It also
 presents an initial list of Stakeholders and Target Groups, an initial list of products and services to be developed during the project and it identifies both project service providers and project data providers. It provides guidelines for using various repositories. There are also sections on European Commission events and meetings to attend, in particular, the BRIDGE initiative; the Advisory Board for Dissemination and Exploitation; and general characteristics of large-scale events such as conferences/seminars. The plan was produceded pre-covid pandemic and has been reviewed and revised since.
Teilprojekt 1 - Mehr transformative Verträge für Österreich
Creators: name: Kromp, Brigitte
name: Poernbacher, Erika
Publisher: name: Zenodo
Year: 2024

description: The Austrian Transition to Open Access 2 (AT2OA2) project supports different aspects of the Open Access-transformation process. Subproject 1 aims to increase the number of contracts with Open Access components (transformative agreements) with scholarly publishers. This poster summarizes the findings of the four year project phase and was first presented at the AT2OA2 closing event on October 09th, 2024.
Unbiased evaluation of ranking metrics reveals consistent performance in science and technology citation data
Creators: name: Xu, Shuqi
name: Mariani, Manuel Sebastian
name: Lü, Linyuan
name: Medo, Matúš
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Digital Libraries (cs.DL)
subject: Information Retrieval (cs.IR)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Despite the increasing use of citation-based metrics for research evaluation purposes, we do not know yet which metrics best deliver on their promise to gauge the significance of a scientific paper or a patent. We assess 17 network-based metrics by their ability to identify milestone papers and patents in three large citation datasets. We find that traditional information-retrieval evaluation metrics are strongly affected by the interplay between the age distribution of the milestone items and age biases of the evaluated metrics. Outcomes of these metrics are therefore not representative of the metrics' ranking ability. We argue in favor of a modified evaluation procedure that explicitly penalizes biased metrics and allows us to reveal metrics' performance patterns that are consistent across the datasets. PageRank and LeaderRank turn out to be the best-performing ranking metrics when their age bias is suppressed by a simple transformation of the scores that they produce, whereas other popular metrics, including citation count, HITS and Collective Influence, produce significantly worse ranking results.
description: 21 pages, 11 figures, 5 tables
Entropy-Driven Reentrant Behavior in CMR Manganites
Creators: name: Furukawa, Nobuo
name: Motome, Yukitoshi
name: Nagaosa, Naoto
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss the origin of the reentrant behaviors of insulating states above the Curie temperature of the colossal magnetoresistance manganites. We consider a system where charge ordering and ferromagnetism compete with each other. In the presence of randomness which pins charge order fluctuations, entropy-driven reentrant behaviors will appear, which explains the typical temperature dependence of the resistivity for CMR manganites.
description: 2 pages, 1 figure, submitted to SCES'04
ТЕНЕВАЯ ЭКОНОМИКА: ПРОБЛЕМЫ, ПРИЧИНЫ И ПУТИ РЕШЕНИЯ
Creators: name: Муродов, Бобиржон
Publisher: name: Zenodo
Year: 2025

description: Теневая экономика оказывает значительное влияние на макроэкономические показатели, уровень налоговых поступлений и социальное благополучие граждан. Мы рассмотрели причины возникновения теневой экономики, её масштабы и последствия, а также возможные меры по её минимизации.
The four-point correlation function of the energy-momentum tensor in the free conformal field theory of a scalar field
Creators: name: Serino, Mirko
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present an explicit momentum space computation of the four-point function of the energy-momentum tensor in 4 spacetime dimensions for the free and conformally invariant theory of a scalar field. The result is obtained by explicit evaluation of the Feynman diagrams by tensor reduction. We work by embedding the scalar field theory in a gravitational background consistently with conformal invariance in order to derive all the terms the correlator consists of and all the Ward identities implied by the requirements of general covariance and anomalous Weyl symmetry. We test all these identities numerically in several kinematic configurations. Mathematica notebooks detailing the step-by-step computation are made publicly available through a GitHub repository. To the best of our knowledge, this is the first explicit result for the four-point correlation function of the energy-momentum tensor in a conformal and non supersymmetric field theory which is readily numerically evaluable in any kinematic configuration.
description: Final minor typos amended, 37 pages, 12 figures, associated Mathematica notebooks available on https://github.com/mirkos86/4-EMT-correlation-function-in-a-4d-CFT
Fig. S5 from Thoracic scales of moths as a stealth coating against bat biosonar
Creators: name: Neil, Thomas R.
name: Zhiyuan Shen
name: Robert, Daniel
name: Drinkwater, Bruce W.
name: Holderied, Marc W.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Biophysics
subject: 60114 Systems Biology
subject: FOS: Biological sciences

description: Fur of two moths A. suraka (A, E, I, M), C. promethea (B, F, J, K), and two butterflies G. agamemnon (C, G, K, O), P. troilus (D, H, L, P). Light microscope images showing thorax furriness (A, B, C, D) and ventral tegula morphology (E, F, G, H). SEM images of midsagittal sections through the thorax (I, J, K, L), and dorsal views of partly descaled tegulae showing scale types and insertion point density (M, N, O, P). Labels: b = base scales; p = piliform scales. Scale bars shown in left column of panels apply to all panels to their right.
Elastic and inelastic scattering of $^{16}$O on $^{27}$Al and $^{28}$Si at 240 MeV
Creators: name: Fonseca, L. M.
name: Linares, R.
name: Zagatto, V. A. B.
name: Cappuzzello, F.
name: Carbone, D.
name: Cavallaro, M.
name: Agodi, C.
name: Lubian, J.
name: Oliveira, J. R. B.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The nuclear scattering at energies well above the Coulomb barrier allows for a fairly sensitive examination of the parameters of the optical potential when the relevant couplings are included into the calculations. In this work we present experimental angular distribution data for the elastic and inelastic scatterings of $^{16}$O impinging on $^{27}$Al and $^{28}$Si target nuclei at \textit{E}$_{lab}=240$ MeV. The experimental data were measured at $7\degree < θ_{c.m.} < 16\degree$ with good angular resolution. Experimental data are compared with coupled channel calculations with the inclusion of couplings to excited states in the target and projectile. We show that the shape of angular distributions are sensitive to the mass diffuseness parameter and the best agreement is achieved for $a = 0.62$ fm.
description: 19 pages, 9 figures
The effect of parallel static and microwave electric fields on excited hydrogen atoms
Creators: name: Richards, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by recent experiments we analyse the classical dynamics of a hydrogen atom in parallel static and microwave electric fields. Using an appropriate representation and averaging approximations we show that resonant ionisation is controlled by a separatrix, and provide necessary conditions for a dynamical resonance to affect the ionisation probability. The position of the dynamical resonance is computed using a high-order perturbation series, and estimate its radius of convergence. We show that the position of the dynamical resonance does not coincide precisely with the ionisation maxima, and that the field switch-on time can dramatically affect the ionisation signal which, for long switch times, reflects the shape of an incipient homoclinic. Similarly, the resonance ionisation time can reflect the time-scale of the separatrix motion, which is therefore longer than conventional static field Stark ionisation. We explain why these effects should be observed in the quantum dynamics. PACs: 32.80.Rm, 33.40.+f, 34.10.+x, 05.45.Ac, 05.45.Mt
description: 47 pages, 20 figures
Isotropic Lifshitz Scaling in four dimensions
Creators: name: Zappala, Dario
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The presence of isotropic Lifshitz points for a O(N)-symmetric scalar theory is investigated with the help of the Functional Renormalization Group. In particular, at the supposed lower critical dimension d=4, evidence for a continuous line of fixed points is found for the O(2) theory, and the observed structure presents clear similarities with the properties observed in the 2-dimensional Berezinskii-Kosterlitz-Thouless phase.
In-situ generated palladium seeds lead to single-step bioinspired growth of AuPd bimetallic nanoparticles with catalytic performance
Creators: name: Alizadeh, Abdolhamid
name: Sze-Ting Wong
name: Mustaffa Shamsuddin
name: Yeoung-Sang Yun
Publisher: name: figshare
Year: 2021
Subjects: subject: Organic Chemistry
subject: FOS: Chemical sciences

description: AuePd bimetallic nanospheres were synthesized via a green approach based on an in situ seed-mediated growth method using Etlingera elatior (EE) leaf extract as a bioreducing and capping agent. The synthesized bimetallic Au1Pd1, Au1Pd10, Au10Pd1 and monometallic Au and Pd nanoparticles were characterized using various spectroscopic and microscopic techniques. This study reveals the morphology control of anisotropic Au nanoparticles, which can be achieved by the addition of palladium into the aqueous reaction mixture. Furthermore, the catalytic ability of each nanoparticle to catalyze the reduction of 4-nitrophenol to 4-aminophenol were investigated. The bimetallic nanoparticles are more efficient in catalyzing the reduction of 4-nitrophenol than monometallic Au and Pd whereby the Au1Pd1 was the most efficient, with a rate constant, k, of 24.0 × 10-3 min-1.
Andrena (Hoplandrena) ferox Smith 1847
Creators: name: Gaspar, Hugo
name: Flaminio, Simone
name: Soares, Albano
name: Rufino, Cristina
name: Loureiro, João
name: Castro, Sílvia
name: Wood, Thomas J.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena ferox

description: Andrena (Hoplandrena) ferox Smith, 1847
New data.
Portugal • Aveiro, Mealhada, Buçaco; 1876–1910; 1 ♂ (ZOO.0032110) • Coimbra, Coimbra, Ponte da Portela; 22. iv. 1968; 1 ♂ (ZOO.0027629, Fig. 3 B); leg. M. A. Diniz • Guarda, Sabugal, Santo Estêvão; 25. iv. 2023; 1 ♀ (C 4705); leg. H. Gaspar, FLOW.
Remarks.
Specially associated with Quercus L. forests, the new findings are from sites with relatively well-preserved forests of this type. A. ferox is found here and there in more temperate parts of northern Spain, but these records noticeably expand the Iberian range.
Distribution.
Central region.
description: Published as part of Gaspar, Hugo, Flaminio, Simone, Soares, Albano, Rufino, Cristina, Loureiro, João, Castro, Sílvia & Wood, Thomas J., 2025, New data from the historical bee collection (Hymenoptera, Anthophila) of the Science Museum of the University of Coimbra and additional faunistic updates for Portugal, pp. 165-194 in Journal of Hymenoptera Research 98 on pages 165-194, DOI: 10.3897/jhr.98.142965
Hot Gas in the Circumstellar Bubble S308
Creators: name: Chu, Y. -H.
name: Guerrero, M. A.
name: Gruendl, R. A.
name: Garcia-Segura, G.
name: Wendker, H. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: S308 is a circumstellar bubble blown by the WN4 star HD50896. It is one of the only two single-star bubbles that show detectable diffuse X-ray emission. We have obtained XMM-Newton EPIC observations of the northwest quadrant of S308. The diffuse X-ray emission shows a limb-brightened morphology, with a clear gap extending from the outer edge of the diffuse X-ray emission to the outer rim of the nebular shell. The X-ray spectrum of the diffuse emission is very soft, and is well fitted by an optically thin plasma model for a N-enriched plasma at temperatures of ~1.1x10^6 K. A hotter gas component may exist but its temperature is not well constrained as it contributes less than 6% of the observed X-ray flux. The total X-ray luminosity of S308, extrapolated from the bright northwest quadrant, is <=(1.2+-0.5)x10^{34} ergs/s. We have used the observed bubble dynamics and the physical parameters of the hot interior gas of S308 in conjunction with the circumstellar bubble model of Garcia-Segura & Mac Low (1995) to demonstrate that the X-ray-emitting gas must be dominated by mixed-in nebular material.
description: 18 pages, 3 figures, to appear in the Astrophysical Journal, Dec 20 issue
Supercritical angle microscopy and spectroscopy
Creators: name: Oheim, Martin
name: Salomon, Adi
name: Brunstein, Maia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Optics (physics.optics)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Fluorescence detection, either involving propagating or near-field emission, is widely being used in spectroscopy, sensing and microscopy. Total internal reflection fluorescence (TIRF) confines fluorescence excitation by an evanescent (near-) field and it is a popular contrast generator for surface-selective fluorescence assays. Its emission equivalent, supercritical angle fluorescence (SAF) is comparably less established although it achieves a similar optical sectioning as does TIRF. SAF emerges when a fluorescing molecule is located very close to an interface and its near-field emission couples to the higher-refractive index medium (n2 > n1) and becomes propagative. Then, most fluorescence is detectable on the side of the higher-index substrate and a large fraction of this fluorescence is emitted into angles forbidden by Snell's law. SAF as well as the undercritical angle fluorescence (UAF) (far-field emission) components can be collected with microscope objectives having a high-enough detection aperture NA > n2 and be separated in the back-focal plane (BFP) by Fourier filtering. The BFP image encodes information about the fluorophore radiation pattern, and it can be analysed to yield precise information about the refractive index in which the emitters are embedded, their nanometric distance from the interface and their orientation. A SAF microscope can retrieve this near-field information through wide-field optics in a spatially resolved manner, and this functionality can be added to any existing inverted microscope.
description: 3 figures
A METHOD FOR ESTIMATING BENEFITS TO FISHERMEN OF A CHANNEL DREDGING PROJECT
Creators: name: Folsom, W. Davis
name: Folsom, W. Davis
Publisher: name: Unknown
Year: 1977
Subjects: Resource /Energy Economics and Policy

description: Considerable discussion has already taken place· regarding the limitations of benefit-cost analysis. The purpose of this paper is not to engender further debate concerning the merits of benefit-cost analysis, but rather to present a framework and example of application of benefit-cost analysis to a problem facing the fishing industry.
A model of electroweakly interacting non-abelian vector dark matter
Creators: name: Abe, Tomohiro
name: Fujiwara, Motoko
name: Hisano, Junji
name: Matsushita, Kohei
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose an electroweakly interacting spin-1 dark matter (DM) model. The electroweak gauge symmetry, SU(2)$_L\times$U(1)$_Y$, is extended into SU(2)$_0\times$SU(2)$_1 \times $SU(2)$_2 \times$U(1)$_Y$. A discrete symmetry exchanging SU(2)$_0$ and SU(2)$_2$ is imposed. This discrete symmetry stabilizes the DM candidate. The spin-1 DM particle ($V^0)$ and its SU(2)$_L$ partners ($V^\pm$) interact with the Standard Model (SM) electroweak gauge bosons without any suppression factors. Consequently, pairs of DM particles efficiently annihilate into the SM particles in the early universe, and the measured value of the DM energy density is easily realized by the thermal freeze-out mechanism. The model also predicts a heavy vector triplet ($W'^\pm$ and $Z'$) in the visible sector. They contribute to the DM annihilation processes. The mass ratio of $Z'$ and $V^0$ determines values of various couplings, and constraints on $W'$ and $Z'$ restrict regions of the parameter space that are viable for DM physics. We investigate the constraints from perturbative unitarity of scalar and gauge couplings, the Higgs signal strength, $W'$ search at the LHC, and DM direct detection experiments. It is found that the relic abundance of $V^0$ explains the right amount of the DM energy density for 3 TeV $\lesssim m_{V^0} \lesssim$ 19 TeV.
description: 29 pages, 7 figures, 2 tables, the version published in JHEP
Anàlisi de les notícies publicades a la portada de Meneame.net del Maig 2020 fins Abril 2021
Creators: name: De Palol, Adria Vidal
name: Alia, Zenon Perise
Publisher: name: Zenodo
Year: 2021

description: El dataset recull les notícies que han arribat a la portada de Meneame. Com que la pàgina de Meneame és un agregador de notícies, el primer camp ens mostra la URL de la notícia pròpiament dita, és a dir, és un enllaç a una altra web, ja sigui la versió digital d'un diari o un blog o qualsevol altre tipus de pàgina. A continuació trobem els dos camps principals de la notícia, que contenen la notícia pròpiament dita. Aquests són el títol i el resum de la notícia. Es tracta d'un text escrit normalment en castellà. Per tal de posar les notícies en context temporal disposem de dues dates que enregistra Meneame. Aquestes són, per un costat, la data i hora en la que la notícia ha estat enregistrada a la pàgina. És a dir, el dia i hora en el que un usuari ha decidit que una determinada notícia d'un medi extern pot ser rellevant per a la comunitat i l'ha enregistrar a Meneame. Aquesta és la data d'enviament. Després de cert temps, la comunitat ha pogut veure aquesta notícia i ha pogut votar si és rellevant o no. L'algorisme de Meneame decideix a partir d'aquests vots sí la notícia és rellevant i per tant, apareix en portada. Aquesta és la data de publicació i és la segona data que enregistrem. Tal com hem dit, la decisió de publicació es pren en funció de les votacions que ha rebut una notícia determinada. Per tal de poder ponderar el pes d'una notícia determinada el nostre dataset també conté el número de vots que ha obtingut. Per últim, no totes les noticies que s'envien a Meneame són d'actualitat pròpiament dites. També apareixen altres tipus com articles culturals o històrics. Per tal de diferenciar les notícies d'actualitat d'altre tipus de textos, disposem d'una categoria que és assignada per l'usuari que envia la notícia.
PUBLIC ECONOMICS OF THE SMALL FARM
Creators: name: Hall, Harry H.
name: Smith, Eldon D.
name: Pagoulatos, Angelos
name: Hall, Harry H.
name: Smith, Eldon D.
name: Pagoulatos, Angelos
Publisher: name: Unknown
Year: 1977
Subjects: Public Economics

description: Large numbers of rural people, especially in areas where farms are small, do not receive adequate nutrition, medical care, or education. It is argued in this paper that a combination of technical assistance and income maintenance, as opposed to income maintenance alone, may be the most cost-effective way to help such people. A conceptual model for considering the tradeoffs between technical assistance and income maintenance is presented. Evidence from Appalachian Kentucky that technical assistance can be helpful is reported. Additional categories of information required to evaluate alternatives with the conceptual model are identified.
Digital Blood in Massively Parallel CPU/GPU Systems for the Study of Platelet Transport
Creators: name: Kotsalos, Christos
name: Latt, Jonas
name: Beny, Joel
name: Chopard, Bastien
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We propose a highly versatile computational framework for the simulation of cellular blood flow focusing on extreme performance without compromising accuracy or complexity. The tool couples the lattice Boltzmann solver Palabos for the simulation of the blood plasma, a novel finite element method (FEM) solver for the resolution of the deformable blood cells, and an immersed boundary method for the coupling of the two phases. The design of the tool supports hybrid CPU-GPU executions (fluid, fluid-solid interaction on CPUs, the FEM solver on GPUs), and is non-intrusive, as each of the three components can be replaced in a modular way. The FEM-based kernel for solid dynamics outperforms other FEM solvers and its performance is comparable to the state-of-the-art mass-spring systems. We perform an exhaustive performance analysis on Piz Daint at the Swiss National Supercomputing Centre and provide case studies focused on platelet transport. The tests show that this versatile framework combines unprecedented accuracy with massive performance, rendering it suitable for the upcoming exascale architectures.
Απορριπτόμενα αλιεύματα μηχανότρατας στις ΒΔ ακτές της Κρήτης
Creators: name: Γεωργιάδης, Κωνσταντίνος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Απορριπτόμενα αλιεύματα
Μηχανότρατα
Κρητικό Πέλαγος / Νότιο Αιγαίο Πέλαγος
Discards
Bottom trawl
Cretan Sea / South Aegean Sea

description: Βασικό αντικείμενο της διπλωματικής αποτελεί η μελέτη των απορριπτόμενων αλιευμάτων του αλιευτικού εργαλείου της τράτας βυθού στην περιοχή του Βορειοδυτικού Κρητικού Πελάγους. Για τις ανάγκες της εργασίας πραγματοποιήθηκε μία δειγματοληψία με μηχανότρατα στον Κόλπο των Χανίων το Δεκέμβριο του 2018. Τα δεδομένα που συγκεντρώθηκαν αναλύθηκαν σε σύγκριση με αντίστοιχα στοιχεία από δειγματοληψίες που είχαν διενεργηθεί στον Κόλπο των Χανίων και τον Κόλπο του Αλμυρού (Ρεθύμνου) το Δεκέμβριο του 2016. Τα αποτελέσματα της στατιστικής επεξεργασίας υπέδειξαν πως ο Κόλπος του Αλμυρού είχε χαμηλότερη βιοποικιλότητα και βιομάζα σε σύγκριση με τον Κόλπο των Χανίων αν και οι τιμές της αφθονίας ήταν μεγαλύτερες. Το μέσο ολικό μήκος των περισσότερων από τα κυρίαρχα και πιο συχνά εμφανιζόμενα είδη φαίνεται πως μειώθηκε στον Κόλπο των Χανίων από το έτος 2016 στο 2018, ενώ αυξήθηκε στα είδη χαμηλής εμπορικής αξίας. Μεγαλύτερες τιμές βιοποικιλότητας, αφθονίας και βιομάζας παρατηρήθηκαν στους ρηχούς σταθμούς
description: Key issue of the master thesis is the bottom trawl discards in the Northeast Cretan Sea (South Aegean Sea). A sampling with bottom trawl was conducted during December of 2018 in Chania Bay. The collected data were analyzed and compared with older data (2016) from the same region (Chania Bay and Rethymno Bay). Species composition and biomass were found to be higher in Chania Bay although the quantities were greater in Rethymno Bay. Mean total length of discarded fish was decreased from 2016 to 2018 for most of the dominant species while it was increased in the less valuable and not commercial species. Values of biodiversity, abundance and biomass appeared to be higher in the shallow stations
Fig. S3 from Thoracic scales of moths as a stealth coating against bat biosonar
Creators: name: Neil, Thomas R.
name: Zhiyuan Shen
name: Robert, Daniel
name: Drinkwater, Bruce W.
name: Holderied, Marc W.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Biophysics
subject: 60114 Systems Biology
subject: FOS: Biological sciences

description: Thorax target strength as a function of frequency for the four species at each of the 7 elevation angles measured (10°-70°): Antherina suraka (A-Y), Callosamia promethea (B-Z), Graphium agamemnon (C-AA) and Papilio troilus (D-AB). Yellow lines are intact specimens, blue have the tegula removed and red are bald. Shaded area indicates the SEM. Colour bars indicate regions of significant difference between treatments.
Additional file 1 of Agricultural land use shapes dispersal in white-tailed deer (Odocoileus virginianus)
Creators: name: Gilbertson, Marie L. J.
name: Ketz, Alison C.
name: Hunsaker, Matthew
name: Jarosinski, Dana
name: Ellarson, Wesley
name: Walsh, Daniel P.
name: Storm, Daniel J.
name: Turner, Wendy C.
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 1
Ο Κοινωνικός τουρισμός, διεθνή παραδείγματα και η περίπτωση της Ελλάδας
Creators: name: Κουβάτσης, Νικόλαος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Κοινωνικός τουρισμός
Βιώσιμη και αειφόρος ανάπτυξη
Ειδικές μορφές τουρισμού
Social tourism
Sustainable development
Special forms of tourism

description: Ο τουρισμός ως φαινόμενο παρουσιάζει ιδιαίτερο ερευνητικό ενδιαφέρον από την σκοπιά της οικονομίας, της κοινωνίας ή οποιασδήποτε άλλης προοπτικής. Επιπροσθέτως όλα τα είδη του τουρισμού φανερώνουν εξίσου μεγάλο ενδιαφέρον για τον τρόπο που επιδρούν στο φαινόμενο του τουρισμού αλλά και στην κοινωνία γενικότερα. Παρ’ όλα αυτά στη παρούσα μελέτη επιχειρήθηκε να ερευνηθεί εάν ο Κοινωνικός τουρισμός, ως μέρος των ειδικών μορφών τουρισμού, μπορεί να συμβάλει στην βιώσιμη ανάπτυξη. Η έρευνα χωρίστηκε σε δύο μέρη, όπου στο μεν πρώτο αναλύθηκαν όλες οι βασικές έννοιες γύρω από τον τουρισμό, την αειφορία, αναλύονται τα βασικά προβλήματα που απειλούν τον τουρισμό και παρουσιάστηκαν αντίστοιχες μελέτες που πραγματεύονταν το εν λόγω θέμα. Το δε δεύτερο αφορούσε την στατιστική ανάλυση του ερωτηματολογίου όπου 125 άτομα συμμετείχαν στην έρευνα και κλήθηκαν να απαντήσουν σε ερωτήσεις γνώσεως και κατανόησης του κοινωνικού τουρισμού.
description: Tourism as a phenomenon show particular research interest from the point of view of economy, society or any other perspective. In addition, all types of tourism show equally great interest in the way they affect the phenomenon of tourism and society in general. Nevertheless, in the present study, an attempt was made to investigate whether Social tourism, as part of specific forms of tourism, can contribute to sustainable development. The research was divided into two parts, where in the first one all the basic concepts around tourism, sustainability were analyzed, the main problems that threaten tourism were analyzed and corresponding studies were presented that dealt with this issue. The second part concerned the statistical analysis of the questionnaire where 125 people participated in the research and were asked to answer questions of knowledge and understanding of social tourism and sustainable tourism.