cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mass-matrix ansatz and constraints on $B_{s}^{0}-\bar{B}_{s}^{0}$ mixing in 331 models
Creators: name: Martinez, R.
name: Ochoa, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Comparing the theoretically predicted and measured values of the mass difference of the $B^{0}_{s}$ system, we estimate the lower bound on the mass of the $Z^{\prime}$ boson of models based on the $SU(3)_{c} \otimes SU(3)_{L} \otimes U(1)_X$ gauge group. By assuming zero-texture approaches of the quark mass matrices, we find the ratio of the measured value to the theoretical prediction from the Standard Model and the $Z^{\prime}$ contribution from the 331 models of the mass difference of the $B^{0}_{s}$ system. We find lower bounds on the $Z^{\prime}$ mass ranging between 1 TeV and 30 TeV for the two most popular 331 models, and four different zero-textures ansätze. The above results are expressed as a function of the weak angle associated to the $b-s-Z^{\prime}$ couplings.
description: To be published at Physical Revew D
The surface of (1) Ceres in visible light as seen by Dawn/VIR
Creators: name: Rousseau, B.
name: De Sanctis, M. C.
name: Raponi, A.
name: Ciarniello, M.
name: Ammannito, E.
name: Frigeri, A.
name: Ferrari, M.
name: De Angelis, S.
name: Tosi, F.
name: Schröder, S. E.
name: Raymond, C. A.
name: Russell, C. T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We study the surface of Ceres at visible wavelengths, as observed by the Visible and InfraRed mapping spectrometer (VIR) onboard the Dawn spacecraft, and analyze the variations of various spectral parameters across the whole surface. We also focus on several noteworthy areas of the surface of this dwarf planet. We made use of the newly corrected VIR visible data to build global maps of a calibrated radiance factor at 550 nm, with two color composites and three spectral slopes between 400 and 950 nm. We have made these maps available for the community via the Aladin Desktop software. Ceres surface shows diverse spectral behaviors in the visible range. The color composite and the spectral slope between 480 and 800 nm highlight fresh impact craters and young geologic formations of endogenous origin, which appear bluer than the rest of the surface. The steep slope before 465 nm displays very distinct variations and may be a proxy for the absorptions caused by the $O_2^{-}$ -> $Fe^{3+}$ or the $2Fe^{3+}$ -> $Fe^{2+} + Fe^{4+}$ charge transfer, if the latter are found to be responsible for the drop in this spectral range. We notice several similarities between the spectral slopes and the abundance of phyllosilicates detected in the infrared by the VIR, whereas no correlation can be clearly established with carbonate species. The region of the Dantu impact crater presents a peculiar spectral behavior (especially through the color and the spectral slope before 465 nm) suggesting a change in composition or in the surface physical properties that is not observed elsewhere on Ceres.
description: 22 pages, 14 + 5 figures. Published online on Astronomy and Astrophysics on 07-10-2020
title: Habitat Winners and Losers: Predictive Habitat Modelling of OSPAR Priority Marine Habitats
Creators: name: Gormley, Kate
name: Hull, Angela
name: Porter, Joanne
name: Bell, Michael
name: Sanderson, William
Publisher: name: ASC 2013 - Theme session B
Year: 2024
Subjects: The sea and human culture and societies
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. OSPAR contracting parties and marine regions may experience the loss and gain of Priority Marine Habitats (PMHs) in the future as a result of warming seas. A Species Distribution Model, Maxent, was used to determine the potential extent and distribution of PMHs in the north east Atlantic under a 4oC increase in ocean temperature between 2009 and 2100; scenario A1B. Results showed the potential movement; and loss or gain of PMHs throughout the OSPAR regions in the projected timeframe. Belgium was projected as gaining the most PMH; while Germany may potentially lose the most. Looking towards the future, management initiatives and strategies will need to be put in place in order to manage the potential loss and gain of PMHs between sub-regions and countries.
Κράτος, Κυριαρχία και Θάνατος στο έργο του Thomas Hobbes:
Creators: name: Κόντος, Χρήστος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Κράτος
Θάνατος
Χομπς
State
Death
Hobbes

description: Σκοπός της Μεταπτυχιακής Εργασίας ήταν η μελέτη των εννοιών του Κράτους, της Κυριαρχία και του Θανάτου στο έργο του Thomas Hobbes. Με βάση το βιβλίο του Λεβιάθαν (1651), εξετάσαμε κάθε μία έννοια ξεχωριστά και τη διαπλοκή τους. Οι παραπάνω έννοιες εξετάσθηκαν τόσο στη Φυσική όσο και στην Πολιτική Κατάσταση, όπως περιγράφονται στο έργο του. Επιπλέον δείξαμε τη μεταξύ τους διαπλοκή και αλληλεξάρτηση στη θεωρία του Hobbes, καθώς και την πρωτοκαθεδρία του Θανάτου στο εννοιολογικό τρίγωνο εξήγησης της Πολιτικής Κατάστασης. Τέλος, παρουσιάσαμε και την ερμηνεία του Carl Schmitt για τον Thomas Hobbes και συγκεκριμένα για το βιβλίο του Λεβιάθαν.
description: The aim of the present postgraduate work was to study the meanings of State, Dominance and Death in Thomas Hobbes writings. Based on his book Leviathan (1651) we examined the meaning of each notion and the weave between them. These notions were examined not only in Physical but also in the Political situation, as both described by Thomas Hobbes. Moreover we point apart from their weave the interdependence between them in his theory as well as the primacy of Death. We also present the conceptual triangle of explaining the political situation with the primacy of Death in his Political Philosophy. In the conclusion we present the reading of Thomas Hobbes’ theory by Carl Schmitt and especial his book Leviathan.
Electron Acceleration in Solar Flares: Theory of Spectral Evolution
Creators: name: Grigis, Paolo C.
name: Benz, Arnold O.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: Stochastic acceleration is thought to be a key mechanism in the energization of solar flare electrons. Aims: We study whether stochastic acceleration can reproduce the observed soft-hard-soft evolution of the spectral features of the hard X-ray emitted by suprathermal electron. We pay special attention to the effects of particle trapping and escape. Methods: The Fokker-Planck equation for the electron distribution is integrated numerically using the coefficients derived by Miller et al. for transit-time damping acceleration. The electron spectra are then converted to photon spectra for comparison with RHESSI observation of looptop sources. Results: The presence of particle escape softens the model spectra computed in the stochastic acceleration framework. The ratio between the efficiency of trapping and acceleration controls the spectral evolution which follows a soft-hard-soft pattern. Furthermore, a pivot point (that is, a common crossing point of the accelerated particle spectra at different times) is found at around 10 keV. It can be brought into agreement with the observed value of 20 keV by enhanced trapping through an electric potential. Conclusions: The model proposed here accounts for the key features observed in the spectral evolution of hard X-ray emission from looptop sources.
description: expanded in answer to the referee's comments, accepted by Astronomy & Astrophysics
Measurements of D-D fusion neutrons generated in nanowire array laser plasma using Timepix3 detector
Creators: name: Rubovic, Peter
name: Bonasera, Aldo
name: Burian, Petr
name: Cao, Zhengxuan
name: Fu, Changbo
name: Kong, Defeng
name: Lan, Haoyang
name: Lou, Yao
name: Luo, Wen
name: Lv, Chong
name: Ma, Yugang
name: Ma, Wenjun
name: Ma, Zhiguo
name: Meduna, Lukas
name: Mei, Zhusong
name: Mora, Yesid
name: Pan, Zhuo
name: Shou, Yinren
name: Sykora, Rudolf
name: Veselsky, Martin
name: Wang, Pengjie
name: Wang, Wenzhao
name: Yan, Xueqing
name: Zhang, Guoqiang
name: Zhao, Jiarui
name: Zhao, Yanying
name: Zemlicka, Jan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present the results of neutron detection in a laser plasma experiment with a CD$_2$ nanowire target. A hybrid semiconductor pixel detector Timepix3 covered with neutron converters was used for the detection of neutrons. D-D fusion neutrons were detected in a polyethylene converter through recoiled protons. Both the energy of recoiled protons and the time-of-flight of neutrons (and thus their energy) were determined. We report $(2.4 \pm 1.8) \times 10^7$ neutrons generated for 1~J of incoming laser energy. Furthermore, we proved that Timepix3 is suitable for difficult operational conditions in laser experiments.
description: pdflatex, accepted for publication in NIM A
Interpretable Multiple Treatment Revenue Uplift Modeling
Creators: name: Gubela, Robin M.
name: Lessmann, Stefan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Big data and business analytics are critical drivers of business and societal transformations. Uplift models support a firm's decision-making by predicting the change of a customer's behavior due to a treatment. Prior work examines models for single treatments and binary customer responses. The paper extends corresponding approaches by developing uplift models for multiple treatments and continuous outcomes. This facilitates selecting an optimal treatment from a set of alternatives and estimating treatment effects in the form of business outcomes of continuous scale. Another contribution emerges from an evaluation of an uplift model's interpretability, whereas prior studies focus almost exclusively on predictive performance. To achieve these goals, the paper develops revenue uplift models for multiple treatments based on a recently introduced algorithm for causal machine learning, the causal forest. Empirical experimentation using two real-world marketing data sets demonstrates the advantages of the proposed modeling approach over benchmarks and standard marketing practices.
Towards an integrated model of supportive peer relationships in early adolescence: A systematic review and exploratory meta-analysis (supplemental materials)
Creators: name: Mitic, Marija
Publisher: name: figshare
Year: 2020
Subjects: subject: 111714 Mental Health
subject: FOS: Health sciences

description: The archive comprise following materials:
A. Supplementary tables (ST)- Table 1 – Characteristics of included studies (.xlsx)- Table 2 – Measures of peer relationship quality (.pdf) - Table 3 – List of excluded studies with reasons (.xlsx)
B.Supplementary figures (SF)- Figure 1 –Conceptual triangulation (.pdf)- Figure 2 – Histogram of estimated correlations coefficients (.pdf)- Figures 3 – 95 – forest plots for all variables (.pdf)- Figures 96 – 219 – publication bias funnel plots (.bmp)- Figure 220 – Geographic data (.pdf)

C. Supplementary documents (SD)- Document 1 – Search strategy (.pdf)- Document 2 – Risk of bias (RoB) tools adaptation (.pdf)- Document 3 – List of included studies (.pdf)- Document 4 – PRISMA 2009 checklist (.pdf)- Document 5 – PRISMA 2009 flow diagram (.pdf)
D. Data set (DS)- DS1 - Meta-analysis data set (.xlsx)
* the version 5 contains one new file (Supplementary Figure 1) and a link to a preprint file available at the PsyArXiv repository.
title: Potential influence of climate change on anadromous river herring in their marine habitat
Creators: name: Lynch, Patrick
name: Nye, Janet
name: Hare, Jonathan
name: Stock, Charles
name: Alexander, Michael
name: Scott, James
name: Curti, Kiersten
name: Drew, Katherine
Publisher: name: ASC 2013 - Theme session B
Year: 2024
Subjects: The sea and human culture and societies
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The term ‘river herring’ collectively refers to alewife (Alosa pseudoharengus) and blueback herring (Alosa aestivalis), two anadromous fishes distributed along the east coast of North America. Historically, river herring spawning migrations supported important fisheries, and their runs continue to be of  cultural significance to many coastal communities; however, substantial declines in spawning run size  have been observed, and climate change has been identified a potentially significant stressor. For anadromous species that utilize a range of habitats throughout their life cycle, the response to a changing global climate is inherently complex, and likely varies regionally. River herring occupy marine habitat for the majority of their lives, and we project changes in marine distribution and abundance under future climate scenarios by coupling species distribution models with projected temperature regimes from global climate models. We project northward shifts in distributions, and declines in preferred habitat along the US east coast. We demonstrate that current abundance may play an important role governing the significance of climate effects on future abundance; however, there is uncertainty surrounding current population size. Thus, establishing effective conservation efforts in the near term would likely improve population resiliency, and provide lasting benefits to river herring populations.
Defects in single crystal Silicon wafer
Creators: name: Sharma, Rishabh
name: Sharma, Shivam
Publisher: name: Zenodo
Year: 2021
Subjects: Silicon wafer defects, Light point defects, Crystal originated particles, Monocrystalline Silicon wafer defects

description: During the manufacturing of monocrystalline Silicon ingot for wafer production, interstitial and vacancy defects are formed in the crystal lattice. Presence of these defects in wafers have major impact on the performance of Silicon based electronic devices.
Εκκλησία και διαπλοκή:
Creators: name: Θεοδοσιάδης, Μάριος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Εκκλησία
Διαπλοκή
Church
Interweaving

description: Σκοπός της διατριβής ήταν η μελέτη της διαπλοκής μεταξύ Κράτους και Εκκλησίας στην Ελλάδα. Αρχικά, εξετάσαμε την έκταση δικαιοδοσίας της Ορθοδόξου Εκκλησίας της Ελλάδος. Εν συνεχεία, αναφερθήκαμε στο ισχύον σύστημα σχέσεων μεταξύ Εκκλησίας και Ελληνικής Πολιτείας και κατόπιν παρουσιάσαμε αναλυτικά τη διακύμανση των σχέσεων μεταξύ Ορθοδόξου Εκκλησίας της Ελλάδος και Ελληνικής Πολιτείας, από καταβολής κηρύξεως ανεξάρτητου του Ελληνικού Κράτους μέχρι σήμερα. Ακόμη, αναφερθήκαμε στις κυριότερες εστίες τριβής και διαπλοκής μεταξύ Κράτους και Εκκλησίας στην Ελλάδα, παραθέτοντας συγκεκριμένα ιστορικά παραδείγματα. Ένα άλλο θέμα που θίξαμε ήταν η Εκκλησιαστική περιουσία. Συγκεκριμένα, αναφερθήκαμε στην οικονομική οργάνωση των Μητροπόλεων και των Ενοριών και στην Εκκλησιαστική Κεντρική Υπηρεσία Οικονομικών. Ασχοληθήκαμε επιπλέον με τις επιχειρηματικές δραστηριότητες της Εκκλησίας, τις κυριότερες οικονομικές της διεκδικήσεις από το Ελληνικό Κράτος, την ικανότητά της για απορρόφηση κονδυλίων της Ευρωπαϊκής Ένωσης και προβήκαμε σε μία καταγραφή της Μοναστηριακής Περιουσίας. Τέλος, αναφερθήκαμε στις απόψεις που ακούγονται πρόσφατα από Ιεράρχες της Εκκλησίας για χωρισμό σχέσεων μεταξύ Κράτους και Εκκλησίας, ένεκα της υφιστάμενης οικονομικής κρίσεως.
description: The purpose of the thesis was to study the interlinkages between the State and Church in Greece. Initially, we examined the extent of jurisdiction of the Orthodox Church of Greece. Then, we discussed the current system of relations between the Church and the Greek state and then presented in detail the variation of the relations between the Orthodox Church of Greece and the Greek state, since the beginning of the declaration of an independent Greek state, until today. Furthermore, we discussed the main sources of friction and interlocking between the State and Church in Greece, citing specific historical examples. Another issue touched upon was the church property. Specifically, we discussed the economic organization of the Metropolis and Parishes and the Church Central Finance Office. We dealt also with the business of the Church, the main economic demands of the Church from the Greek Government, the Church’s capacity of absorbing EU funds and we made a recording of the monastery property. Finally, we discussed the views heard recently from bishops of the Church for breaking relations between church and state, due to the current economic crisis.
A Neutrosophic Description Logic
Creators: name: Wang, Haibin
name: Rogatko, Andre
name: Smarandache, Florentin
name: Sunderraman, Rajshekhar
Publisher: name: arXiv
Year: 2006
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: F.4.1

description: Description Logics (DLs) are appropriate, widely used, logics for managing structured knowledge. They allow reasoning about individuals and concepts, i.e. set of individuals with common properties. Typically, DLs are limited to dealing with crisp, well defined concepts. That is, concepts for which the problem whether an individual is an instance of it is yes/no question. More often than not, the concepts encountered in the real world do not have a precisely defined criteria of membership: we may say that an individual is an instance of a concept only to a certain degree, depending on the individual's properties. The DLs that deal with such fuzzy concepts are called fuzzy DLs. In order to deal with fuzzy, incomplete, indeterminate and inconsistent concepts, we need to extend the fuzzy DLs, combining the neutrosophic logic with a classical DL. In particular, concepts become neutrosophic (here neutrosophic means fuzzy, incomplete, indeterminate, and inconsistent), thus reasoning about neutrosophic concepts is supported. We'll define its syntax, its semantics, and describe its properties.
description: 18 pages. Presented at the IEEE International Conference on Granular Computing, Georgia State University, Atlanta, USA, May 2006
Magnetoconvection and dynamo coefficients III: alpha-effect and magnetic pumping in the rapid rotation regime
Creators: name: Käpylä, P. J.
name: Korpi, M. J.
name: Ossendrijver, M.
name: Stix, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims. The alpha- and gamma-effects, which are responsible for the generation and turbulent pumping of large scale magnetic fields, respectively, due to passive advection by convection are determined in the rapid rotation regime corresponding to the deep layers of the solar convection zone. Methods. A 3D rectangular local model is used for solving the full set of MHD equations in order to compute the electromotive force (emf), E = , generated by the interaction of imposed weak gradient-free magnetic fields and turbulent convection with varying rotational influence and latitude. By expanding the emf in terms of the mean magnetic field, E_i = a_ij , all nine components of a_ij are computed. The diagonal elements of a_ij describe the alpha-effect, whereas the off-diagonals represent magnetic pumping. The latter is essentially the advection of magnetic fields by means other than the underlying large-scale velocity field. Comparisons are made to analytical expressions of the coefficients derived under the first-order smoothing approximation (FOSA). Results. In the rapid rotation regime the latitudinal dependence of the alpha-components responsible for the generation of the azimuthal and radial fields does not exhibit a peak at the poles, as is the case for slow rotation, but at a latitude of about 30 degrees. The magnetic pumping is predominantly radially down- and latitudinally equatorward as in earlier studies. The numerical results compare surprisingly well with analytical expressions derived under first-order smoothing, although the present calculations are expected to lie near the limits of the validity range of FOSA.
description: 14 pages, 12 figures, accepted for publication in Astronomy & Astrophysics
Beating classical heuristics for the binary paint shop problem with the quantum approximate optimization algorithm
Creators: name: Streif, Michael
name: Yarkoni, Sheir
name: Skolik, Andrea
name: Neukart, Florian
name: Leib, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The binary paint shop problem (BPSP) is an APX-hard optimization problem of the automotive industry. In this work, we show how to use the Quantum Approximate Optimization Algorithm (QAOA) to find solutions of the BPSP and demonstrate that QAOA with constant depth is able to beat classical heuristics on average in the infinite size limit $n\rightarrow\infty$. For the BPSP, it is known that no classical algorithm can exist which approximates the problem in polynomial runtime. We introduce a BPSP instance which is hard to solve with QAOA, and numerically investigate its performance and discuss QAOA's ability to generate approximate solutions. We complete our studies by running first experiments of small-sized instances on a trapped-ion quantum computer through AWS Braket.
title: Examining Incoherent UV Light as an Assistant to IR Laser on Texturing of CFRP Composites for Adhesive Joining
Creators: name: Al-Mahdy, A
Publisher: name: Liverpool John Moores University
Year: 2025

description: Carbon Fibre Reinforced Polymers (CFRPs) are widely used in aerospace and automotive industries for their high strength-to-weight ratio, but joining their structures presents challenges. Adhesive bonding is preferred to maintain lightweight advantages, yet strong bonds require precise surface preparation. Laser surface processing, a contactless method, has widely been applied to surface preparation for various materials and extensively explored for CFRPs. This technique shows promise in improving adhesion by removing contaminants, adding surface texture to enhance mechanical interlocking, activating surface chemistry, or fully removing the matrix outer layer to expose carbon fibres for direct bonding. On the other hand, incoherent UV light treatment has been studied across a range of materials, including polymeric and non-polymeric substrates. It breaks down polymer or hydrocarbon bonds at the surface, activating surface chemistry and enhancing adhesion and bonding performance. This research examines the effect of incoherent Ultraviolet (UV) light on enhancing the effectiveness of Infrared (IR) lasers in improving adhesive bonding in CFRP/CFRP structures. Two laser systems were used: a nanosecond (ns) pulsed Near-Infrared (NIR) fibre laser at 1064 nm and a Continuous-Wave (CW) Mid-Infrared (MIR) Carbon Dioxide (CO2) laser at 10600 nm. The UV light was provided by a 46 W germicidal lamp emitting at 254 nm. The study optimised and evaluated the three surface treatment methods individually, followed by combining each laser with UV light to explore their effectiveness. Adhesive bonding was assessed using Single Lap Shear (SLS) tests, with mechanical abrading included for comparison. Various CFRP materials with woven and Unidirectional (UD) reinforcement were used. In comparison to as-received samples, NIR laser treatment with 200-nanosecond pulses enhanced bonding by over 60%. Shorter pulses posed a higher risk of fibre damage, resulting in significantly lower bonding improvement. Laser processing of woven CFRPs presented challenges due to the highly variable outer matrix thickness. CW CO2 laser treatments resulted in slight bonding enhancement, with a risk of fibre-matrix debonding. UV treatment alone improved bonding by 75%, outperforming NIR laser treatments, with Cohesive Substrate Failure (CSF) mode indicating stronger adhesion than the material's interlaminar strength. Combining UV with laser treatments provided limited additional benefit. Mechanical abrading showed a 35% improvement in bonding, offering an industry-relevant comparison. Incoherent UV light treatment significantly enhanced bonding strength and offered a cost-effective alternative.
title: Modelling the response of Zostera noltii seagrass and saltmarshes to climate change
Creators: name: Valle, Mireia
name: Chust, Guillem
name: del Campo, Andrea
name: Garmendia, Joxe M.
name: Borja, Ángel
name: Wisz, Mary S.
name: Olsen, Steffen M.
Publisher: name: ASC 2013 - Theme session B
Year: 2024
Subjects: The sea and human culture and societies
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Estuarine habitats, such as seagrass meadows and saltmarshes, are likely to be influenced by climate change. Increase of sea surface temperature and sea-level rise (SLR) could lead to changes in their distribution. In this context, the objectives of this research were to (i) assess changes in the entire biogeographic distribution of Zostera noltii meadows, under seawater warming scenario; and (ii) assess changes on estuarine communities, at a local scale in the Oka estuary (Basque Country), under mean SLR scenarios. Objectives were addressed coupling habitat suitability models to sea surface temperature and SLR forecasts by 2100. Increase of seawater temperature will trigger a northward distributional shift of 888 km, and a retreat of southernmost populations of the seagrass. SLR and derived changes in current velocities would induce the landward migration of estuarine communities. Available suitable areas would increase for seagrass meadows, whereas suitable areas for saltmarshes would drastically decrease mainly due to the limits imposed by anthropogenic barriers.
Assessing symmetry of financial returns series
Creators: name: Coronel-Brizio, H. F.
name: Hernandez-Montoya, A. R.
name: Huerta-Quintanilla
name: Rodriguez-Achach, M.
name: .
Publisher: name: arXiv
Year: 2007
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Computational Physics (physics.comp-ph)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: Testing symmetry of a probability distribution is a common question arising from applications in several fields. Particularly, in the study of observables used in the analysis of stock market index variations, the question of symmetry has not been fully investigated by means of statistical procedures. In this work a distribution-free test statistic Tn for testing symmetry, derived by Einmahl and McKeague, based on the empirical likelihood approach, is used to address the study of symmetry of financial returns. The asymptotic points of the test statistic Tn are also calculated and a procedure for assessing symmetry for the analysis of the returns of stock market indices is presented.
description: Econophysics paper. 6 pages 2 figures
Indecomposable Representations in Z_n Symmetric b,c Ghost Systems via Deformations of the Virasoro Field
Creators: name: Flohr, Michael
name: Voelskow, Julia
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Virasoro field associated to b,c ghost systems with arbitrary integer spin lambda on an n-sheeted branched covering of the Riemann sphere is deformed. This leads to reducible but indecomposable representations, if the new Virasoro field acts on the space of states, enlarged by taking the tensor product over the different sheets of the surface. For lambda=1, proven LCFT structures are made explicit through this deformation. In the other cases, the existence of Jordan cells is ruled out in favour of a novel kind of indecomposable representations.
description: 28 pages, 1 figure, uses empheq.sty, mhtools.sty, mhsetup.sty
Intermediate-Mass Stars Become Magnetic White Dwarfs
Creators: name: Caiazzo, Ilaria
name: Heyl, Jeremy
name: Richer, Harvey
name: Cummings, Jeffrey
name: Fleury, Leesa
name: Hegarty, James
name: Kalirai, Jason
name: Kerr, Ronan
name: Thiele, Sarah
name: Tremblay, Pier-Emmanuel
name: Villanueva, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: When a star exhausts its nuclear fuel, it either explodes as a supernova or more quiescently becomes a white dwarf, an object about half the mass of our Sun with a radius of about that of the Earth. About one fifth of white dwarfs exhibit the presence of magnetic fields, whose origin has long been debated as either the product of previous stages of evolution or of binary interactions. We here report the discovery of two massive and magnetic white dwarf members of young star clusters in the Gaia DR2 database, while a third massive and magnetic cluster white dwarf was already reported in a previous paper. These stars are most likely the product of single-star evolution and therefore challenge the merger scenario as the only way to produce magnetic white dwarfs. The progenitor masses of these stars are all above 5 solar masses, and there are only two other cluster white dwarfs whose distances have been unambiguously measured with Gaia and whose progenitors' masses fall in this range. This high incidence of magnetic white dwarfs indicates that intermediate-mass progenitors are more likely to produce magnetic remnants and that a fraction of magnetic white dwarfs forms from intermediate-mass stars.
description: 11 pages, 7 figures. Accepted by ApJ Letters
Heat current anticorrelation effects leading to thermal conductivity reduction in nanoporous Si
Creators: name: Oliveira, Laura de Sousa
name: Hosseini, S. Aria
name: Greaney, Alex
name: Neophytou, Neophytos
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Prevailing nanostructuring strategies focus on increasing phonon scattering and reducing the mean-free-path of phonons across the spectrum. In nanoporous Si materials, for example, boundary scattering reduces thermal conductivity drastically. In this work, we identify an unusual anticorrelated specular phonon scattering effect which can result in additional reductions in thermal conductivity of up to ~ 80% for specific nanoporous geometries. We further find evidence that this effect has its origin in heat trapping between large pores with narrow necks. As the heat becomes trapped between the pores, phonons undergo multiple specular reflections such that their contribution to the thermal conductivity is partly undone. We find this effect to be wave-vector dependent at low temperatures. We use large-scale molecular dynamics simulations, wave packet analysis, as well as an analytical model to illustrate the anticorrelation effect, evaluate its impact on thermal conductivity, and detail how it can be controlled to manipulate phonon transport in nanoporous materials.
description: 24 pages, 5 figures
title: Recent changes in abundance and feeding ecology of minke whales in Icelandic waters; An indication of climate change?
Creators: name: Víkingsson, Gísli A.
name: Elvarsson, Bjarki Þór
Publisher: name: ASC 2013 - Theme session B
Year: 2024
Subjects: The sea and human culture and societies
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The common minke whale (Balaenoptera acutorostrata) is the most abundant mammalian top predator in Icelandic continental shelf waters with an estimated total consumption of around 2 million tons in the mid-1990’s.
Ribonucleic acid (RNA) virus and coronavirus in Google Dataset Search: their scope and epidemiological correlation
Creators: name: Blázquez-Ochando, Manuel
name: Prieto-Gutiérrez, Juan-José
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Genomics (q-bio.GN)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: This paper presents an analysis of the publication of datasets collected via Google Dataset Search, specialized in families of RNA viruses, whose terminology was obtained from the National Cancer Institute (NCI) thesaurus developed by the US Department of Health and Human Services. The objective is to determine the scope and reuse capacity of the available data, determine the number of datasets and their free access, the proportion in reusable download formats, the main providers, their publication chronology, and to verify their scientific provenance. On the other hand, we also define possible relationships between the publication of datasets and the main pandemics that have occurred during the last 10 years. The results obtained highlight that only 52% of the datasets are related to scientific research, while an even smaller fraction (15%) are reusable. There is also an upward trend in the publication of datasets, especially related to the impact of the main epidemics, as clearly confirmed for the Ebola virus, Zika, SARS-CoV, H1N1, H1N5, and especially the SARS-CoV-2 coronavirus. Finally, it is observed that the search engine has not yet implemented adequate methods for filtering and monitoring the datasets. These results reveal some of the difficulties facing open science in the dataset field.
title: Management of the Bay of Biscay anchovy under climate change
Creators: name: Sánchez, Sonia
name: Ibaibarriaga, Leire
name: Chifflet, Marina
name: Uriarte, Andrés
name: Irigoien, Xabier
name: Chust, Guillem
Publisher: name: ASC 2013 - Theme session B
Year: 2024
Subjects: The sea and human culture and societies
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. The Bay of Biscay anchovy (Engraulis encrasicolus) is a small pelagic fish, with high and variable natural mortality. Its population size relies on incoming recruitment, which is often highly variable and influenced by environmental conditions. The stock is currently managed according to the long term management plan proposal launched by the European Commission in 2009. Management strategy evaluation simulation framework, including a relationship between the recruitment and environmental factors, is used to investigate how the harvest control rule under the current draft long term management plan would perform under a climate change scenario and how environmental drivers could be included into this harvest control rule. Current long term management plan and new harvest control rules which increase/reduce exploitation and change the trigger biomass reference points depending on the upwelling index are tested under various climate scenarios. The results indicate that when recruitment depends on environmental conditions, current long term management plan gives larger average catches with similar or lower biological risks. Moreover, alternative proposed rules reduce the risks and the probability of fishery closure. However, when recruitment does not depend on environment, long term management plan seems to be less risky and allows higher catches than harvest control rules dependent on observed environmental conditions. Nevertheless, full decision-based ecosystem approach should also take into account socio-economic aspects. In addition, the use of the new proposed HCRs requires monitoring of environmental indicators that could then be used to modify fisheries exploitation rates accordingly.
Mapping the National Evidence on Double Burden of Malnutrition in Ethiopia: A Scoping Review Protocol
Creators: name: Lemma Getacher
name: Beyene Wondafrash Ademe
name: Tefera Belachew
Publisher: name: figshare
Year: 2021
Subjects: subject: 111199 Nutrition and Dietetics not elsewhere classified
subject: FOS: Health sciences

description: Nowadays, the double burden of malnutrition is an emerging public health problem due to an inevitable consequence of nutritional transition. An increased number of studies have been reported on the double burden of malnutrition in populations of Ethiopia. However, organized and summarized national evidence is not available yet. Objective: The main aim of this proposed scoping review is to map the national evidence on the double burden of malnutrition in the last decades in Ethiopia. The main research question addressed by the scoping review will be mapping the national evidence on the double burden of malnutrition in the general populations of Ethiopia including all ages and both sexes.
Integrality of Homfly (1,1)-tangle invariants
Creators: name: Morton, H. R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25

description: Given an invariant J(K) of a knot K, the corresponding (1,1)-tangle invariant J'(K)=J(K)/J(U) is defined as the quotient of J(K) by its value J(U) on the unknot U. We prove here that J' is always an integer 2-variable Laurent polynomial when J is the Homfly satellite invariant determined by decorating K with any eigenvector of the meridian map in the Homfly skein of the annulus. Specialisation of the 2-variable polynomials for suitable choices of eigenvector shows that the (1,1)-tangle irreducible quantum sl(N) invariants of K are integer 1-variable Laurent polynomials.
description: 10 pages, including several interspersed figures
Ανάλυση παιδικών ταινιών με περιβαλλοντικό περιεχόμενο ως εργαλείο στην ανάπτυξη της περιβαλλοντικής ευαισθητοποίησης και ενημέρωσης των μικρών παιδιών.:
Creators: name: Αικατερίνη, Περμανθούλα-Μακρίνα Ευστρατίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2011
Subjects: Περιβαλλοντική Εκπαίδευση Μέσα Μαζικής Ενημέρωσης
Περιβαλλοντική Ευαισθητοποίηση
Εκπαιδευτικό Υλικό
Ανάλυση Περιεχομένου
Environmental Education, Media
Environmental Awareness, Education Material
Content Analysis

description: Τα τελευταία χρόνια η ολοένα και περισσότερο αυξανόμενη υποβάθμιση του περιβάλλοντος είναι γεγονός αδιαμφισβήτητο. Γι’ αυτό το λόγο αυτή η υποβάθμιση, που φθάνει σε βαθμό καταστροφής του περιβάλλοντος, επιτάσσει την ανάγκη ενημέρωσης και ευαισθητοποίησης των πολιτών γύρω από τα περιβαλλοντικά ζητήματα, επαναδιαπραγμάτευση των αξιών τους και τροποποίηση των περιβαλλοντικών απόψεων και συμπεριφορών.
description: Τα τελευταία χρόνια η ολοένα και περισσότερο αυξανόμενη υποβάθμιση του περιβάλλοντος είναι γεγονός αδιαμφισβήτητο. Γι’ αυτό το λόγο αυτή η υποβάθμιση, που φθάνει σε βαθμό καταστροφής του περιβάλλοντος, επιτάσσει την ανάγκη ενημέρωσης και ευαισθητοποίησης των πολιτών γύρω από τα περιβαλλοντικά ζητήματα, επαναδιαπραγμάτευση των αξιών τους και τροποποίηση των περιβαλλοντικών απόψεων και συμπεριφορών.
Borel theorems for random matrices from the classical compact symmetric spaces
Creators: name: Collins, Benoît
name: Stolz, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 15A52, 60F05 (Primary) 60B15, 43A75 (Secondary)

description: We study random vectors of the form $(\operatorname {Tr}(A^{(1)}V),...,\operatorname {Tr}(A^{(r)}V))$, where $V$ is a uniformly distributed element of a matrix version of a classical compact symmetric space, and the $A^{(ν)}$ are deterministic parameter matrices. We show that for increasing matrix sizes these random vectors converge to a joint Gaussian limit, and compute its covariances. This generalizes previous work of Diaconis et al. for Haar distributed matrices from the classical compact groups. The proof uses integration formulas, due to Collins and Śniady, for polynomial functions on the classical compact groups.
description: Published in at http://dx.doi.org/10.1214/07-AOP341 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
title: Changes in the state of highly abundant fish stocks as a response to the West Pacific pattern regime shifts
Creators: name: Kotenev, Boris N.
name: Krovnin, Andrei S.
Publisher: name: ASC 2013 - Theme session B
Year: 2024
Subjects: The sea and human culture and societies
Pressures, impacts, conservation, and management

description: No abstracts are to be cited without prior reference to the author. Based on the dynamics of the mean winter index of the West Pacific teleconnection pattern over the last 50 years, two climatic regimes with the quite different habitat conditions of the most abundant fish populations in the Northwest Pacific were identified. The climatic, oceanological and biotic factors during the first (cold) period of 1963-1986 were favorable for frequent appearance of the strong year classes of the main walleye pollock stocks and Japanese sardine (only in 1972-1985), but the Asian salmon stocks during these years had a low abundance. The second, warm, regime (1987-2011) was characterised by the reverse tendencies in fish populations. In the winter of 2011-2012, the evidence for the beginning of a new cold climatic regime has appeared. The especially severe climatic conditions were observed during this winter in the western Bering Sea. As a result, the pink salmon approaches to the East Kamchatka coast in 2013 decreased by 80%, compared to 2011.
Deep GALEX Imaging of the HST/COSMOS Field: A First Look at the Morphology of z~0.7 Star-forming Galaxies
Creators: name: Zamojski, M. A.
name: Schiminovich, D.
name: Rich, R. M.
name: Mobasher, B.
name: Koekemoer, A. M.
name: Capak, P.
name: Taniguchi, Y.
name: Sasaki, S. S.
name: McCracken, H. J.
name: Mellier, Y.
name: Bertin, E.
name: Aussel, H.
name: Sanders, D. B.
name: Fevre, O. Le
name: Ilbert, O.
name: Salvato, M.
name: Thompson, D. J.
name: Kartaltepe, J. S.
name: Scoville, N.
name: Barlow, T. A.
name: Forster, K.
name: Friedman, P. G.
name: Martin, D. C.
name: Morrisey, P.
name: Neff, S. G.
name: Seibert, M.
name: Small, T.
name: Wyder, T. K.
name: Bianchi, L.
name: Donas, J.
name: Heckman, T. M.
name: Lee, Y. -W.
name: Madore, B. F.
name: Milliard, B.
name: Szalay, A. S.
name: Welsh, B. Y.
name: Yi, S. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a study of the morphological nature of redshift z~0.7 star-forming galaxies using a combination of HST/ACS, GALEX and ground-based images of the COSMOS field. Our sample consists of 8,146 galaxies, 5,777 of which are detected in the GALEX near-ultraviolet band down to a limiting magnitude of 25.5 (AB). We make use of the UV to estimate star formation rates, correcting for the effect of dust using the UV-slope, and compute, from the ACS F814W images, the C,A,S,G,M20 morphological parameters for all objects in our sample. We observe a morphological bimodality in the galaxy population and show that it has a strong correspondence with the FUV - g color bimodality. We conclude that UV-optical color predominantly evolves concurrently with morphology. We observe many of the most star-forming galaxies to have morphologies approaching that of early-type galaxies, and interpret this as evidence that strong starburst events are linked to bulge growth and constitute a process through which galaxies can be brought from the blue to the red sequence while simultaneously modifying their morphology accordingly. We conclude that the red sequence has continued growing at z~<0.7. We also observe z~0.7 galaxies to have physical properties similar to that of local galaxies, except for higher star formation rates. Whence we infer that the dimming of star-forming galaxies is responsible for most of the evolution in the star formation rate density of the Universe since that redshift, although our data are also consistent with a mild number evolution. [abridged]
description: 29 pages including 22 figures. Accepted for publication in ApJS COSMOS Special Issue. A copy of the paper with high resolution figures is available at http://www.astro.columbia.edu/~michel/galex_cosmos_paper.pdf
Photon and Axion Splitting in an Inhomogeneous Magnetic Field
Creators: name: Guendelman, E. I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The axion photon system in an external magnetic field, when the direction of propagation of axions and photons is orthogonal to the direction of the external magnetic field, displays a continuous axion-photon duality symmetry in the limit the axion mass is neglected. The conservation law that follow in this effective 2+1 dimensional theory from this symmetry is obtained. The magnetic field interaction is seen to be equivalent to first order to the interaction of a complex charged field with an external electric potential, where this ficticious "electric potential" is proportional to the external magnetic field. This allows one to solve for the scattering amplitudes using already known scalar QED results. From the scalar QED analog the axion and the photon are symmetric and antisymmetric combinations of particle and antiparticle. If one considers therefore scattering experiments in which the two spatial dimensions of the effective theory are involved non trivially, one observes that both particle and antiparticle components of photons and axions are preferentially scattered in different directions, thus producing the splitting or decomposition of the photon and axion into their particle and antiparticle components in an inhomogeneous magnetic field. This observable in principle effect is of first order in the axion photon coupling, unlike the "light shining through a wall phenomena ", which is second order.
description: 9 pages, latex
COSMOS: 3D weak lensing and the growth of structure
Creators: name: Massey, Richard
name: Rhodes, Jason
name: Leauthaud, Alexie
name: Capak, Peter
name: Ellis, Richard
name: Koekemoer, Anton
name: Refregier, Alexandre
name: Scoville, Nick
name: Taylor, James E.
name: Albert, Justin
name: Berge, Joel
name: Heymans, Catherine
name: Johnston, David
name: Kneib, Jean-Paul
name: Mellier, Yannick
name: Mobasher, Bahram
name: Semboloni, Elisabetta
name: Shopbell, Patrick
name: Tasca, Lidia
name: Van Waerbeke, Ludovic
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a three dimensional cosmic shear analysis of the Hubble Space Telescope COSMOS survey, the largest ever optical imaging program performed in space. We have measured the shapes of galaxies for the tell-tale distortions caused by weak gravitational lensing, and traced the growth of that signal as a function of redshift. Using both 2D and 3D analyses, we measure cosmological parameters Omega_m, the density of matter in the universe, and sigma_8, the normalization of the matter power spectrum. The introduction of redshift information tightens the constraints by a factor of three, and also reduces the relative sampling (or "cosmic") variance compared to recent surveys that may be larger but are only two dimensional. From the 3D analysis, we find sigma_8*(Omega_m/0.3)^0.44=0.866+^0.085_-0.068 at 68% confidence limits, including both statistical and potential systematic sources of error in the total budget. Indeed, the absolute calibration of shear measurement methods is now the dominant source of uncertainty. Assuming instead a baseline cosmology to fix the geometry of the universe, we have measured the growth of structure on both linear and non-linear physical scales. Our results thus demonstrate a proof of concept for tomographic analysis techniques that have been proposed for future weak lensing surveys by a dedicated wide-field telescope in space.
description: 21 pages, 15 figures. Accepted for the COSMOS ApJ Suppl. special issue