cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A categorical approach to Picard-Vessiot theory
Creators: name: Maurischat, Andreas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Rings and Algebras (math.RA)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 13B05, 18D10, 12H20

description: Picard-Vessiot rings are present in many settings like differential Galois theory, difference Galois theory and Galois theory of Artinian simple module algebras. In this article we set up an abstract framework in which we can prove theorems on existence and uniqueness of Picard-Vessiot rings, as well as on Galois groups corresponding to the Picard-Vessiot rings. As the present approach restricts to the categorical properties which all the categories of differential modules resp. difference modules etc. share, it gives unified proofs for all these Galois theories (and maybe more general ones).
description: 34 pages
Social cohesion: The concept and its limits
Creators: name: Jenson, Jane
Publisher: name: Vancouver Island University - Royal Roads University
Year: 2000
Subjects: subject: Group values (Sociology)
subject: Belonging (Social psychology)

description: There is a lot of talk in policy circles these days about "social cohesion." There is, however, much less consensus about what social cohesion is, what fosters it, and how much of it we want. Despite this lack of clarity, the international policy community has recently adopted the concept with enthusiasm, using it to consider connections between economic restructuring, social change and political action. This article therefore provides a map of the basic principles informing the thinking of those who deploy the concept. In particular, it identifies five dimensions that are widely considered to be the underpinnings of social cohesion. It then moves on to an assessment of the limits, indeed the dangers, of embracing the notion with too much enthusiasm.
description: Actuellement, les cercles politiques sont animés par de nombreuses discussions sur la cohésion sociale. Même si l'attrait du sujet est largement répandu, on ne constate aucun consensus sur la nature de la cohésion sociale et ce qui l'alimente, ou encore sur le degré de cohésion sociale souhaitable pour la société. Malgré ce manque évident de clarté, la communauté politique internationale a récemment adopté le concept de cohésion sociale avec enthousiasme, en l'utilisant entre autres pour trailer des interconnections liant les restructurations économiques, des changements sociaux ou de l'action politique. Ce court texte fait l'inventaire des différents principes qui sous-tendent l'utilisation de ce concept. En particulier, cinq dimensions sont identifiées. Celles-ci, dans des combinaisons variées, sont souvent considérées comme les fondements de la cohésion sociale. Enfin, il évalue les limites et les dangers d'un recours trop enthousiaste à ce concept.
description: Abstract in English and French; text in English.
description: https://viurrspace.ca/bitstream/handle/10613/6522/Jenson.pdf?sequence=3
Vita intima delle lettere (con una nota sugli scrittoi)
Creators: name: Saggini, Francesca
Publisher: name: Zenodo
Year: 2022
Subjects: epistolography
letters
communication
eighteenth century

description: Lezione di dottorato di ricerca, 5 maggio 2022. This research is part of the Horizon 2020 project called "Opening Romanticism: Reimagining Romantic Drama for New Audiences"(OpeRaNew) ID 892230 within the ERC programme Horizon 2020 MSCA-IF-2019. The PI is Francesca Saggini. See CORDIS website at https://cordis.europa.eu/project/id/892230
User understanding of IS needs and expectations: impact on quality of requirements and satisfaction with system
Creators: name: Hoffman, Jennifer A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: Communication
Participatory design
User involvement
System design--Methodology
User participation

description: This paper explores the effect of users' knowledge of system design methodologies, vocabulary and processes on the ability of the analysts and designers to gather information needed for the development of a system that meets the users' expectations.  It investigates whether gaps in users' knowledge of the system design process contribute to a breakdown in communication among designers and users and if so, what can be done to avoid it, and what the breakdowns mean to the overall success of the project.  A system implementation project in a corporate environment was selected as the focus of this study.  Users of the system and the IS team involved in the implementation were interviewed after the project had been completed for their experiences and perceptions with respect to communication of expectations and education on design methods.  Key findings include the impact of previous experience on the users' comfort level with the requirements gathering process and the effects of a changing communications flow during requirements gathering.
Inga barbourii Standl.
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Inga
Inga barbourii

description: Inga barbourii Standl.
 Terrestrial trees. Distribution in PILA 200–1000 m, low elevation mixed forest, mixed forest in transition to low elevation forest. Global distribution: Nicaragua to Panama. Records: D. Solano 4530 (BM, INB, MO, PMA), S. Bridgewater 4167 (BM, INB, MO, PMA). Uses: Firewood, ornamental.
 ψ Inga exalata T.S.Elias
 Terrestrial trees. Distribution in PILA 500–1300 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest. Global distribution: Costa Rica, Panama. Records: A.K. Monro 6328 (PMA), G. Herrera 2703 (INB, MO). Uses: Firewood. Global conservation status: Endangered (EN), A2c and B1ab(i,iii).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
In-Network Neighborhood-Based Node Similarity Measure: A Unified Parametric Model
Creators: name: Yang, Yu
name: Pei, Jian
Publisher: name: arXiv
Year: 2015
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: In many applications, we need to measure similarity between nodes in a large network based on features of their neighborhoods. Although in-network node similarity based on proximity has been well investigated, surprisingly, measuring in-network node similarity based on neighborhoods remains a largely untouched problem in literature. One grand challenge is that in different applications we may need different measurements that manifest different meanings of similarity. In this paper, we investigate the problem in a principled and systematic manner. We develop a unified parametric model and a series of four instance measures. Those instance similarity measures not only address a spectrum of various meanings of similarity, but also present a series of tradeoffs between computational cost and strictness of matching between neighborhoods of nodes being compared. By extensive experiments and case studies, we demonstrate the effectiveness of the proposed model and its instances.
Memristors based Computation and Synthesis
Creators: name: Gupta, Prashant
name: Jennifer, Priscilla
Publisher: name: arXiv
Year: 2024
Subjects: subject: Systems and Control (eess.SY)
subject: Emerging Technologies (cs.ET)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Memristor has been identified as the fourth fundamental circuit element by Dr. Leon Chua in 1971 and since then it has gathered a lot of interest because of its non-volatility and are considered as a viable solution to the beyond CMOS era computation. Recently, memristor have been used to perform basic logic operations like AND, OR, NAND, NOR, XOR etc. and are also used in applications like Dot Product Engine, Convolution Neural Networks etc. This paper presents a new behavioural model of memristor then using it to build a 32-bit ripple carry adder. The paper later compares the area, power and time delay of the 32 bit Ripple Carry Adder using memristor with the 45nm CMOS technology and highlights its advantages and pitfalls.
Romantic Theatre Studies: state-of-the field and new ways forward
Creators: name: Saggini, Francesca
Publisher: name: Zenodo
Year: 2022
Subjects: Theatre Studies
repertoire
canon
Romanticism

description: The seminar builds on the research and teaching experience of five speakers operating in four national contexts (Ireland, Italy, UK, USA) to draw a tentative map of the evolving domain of Theatre Studies from a transdisciplinary and multinational perspective. Each panellist will present their present and future engagement with Romantic Theatre Studies by way of their research projects and current scholarship. Among the topics discussed in this seminar: Theatre and Disability, Theatre Econom(etr)ics, Theatre and Celebrity, Theatre and Gender, Opening the Romantic Theatre Canon. Issues of pedagogy and stage revival will be addressed as well, with Romantic Theatre in the classroom, on stage and in the canon. Two speakers will be able to share their experience as major EU-funded awardees, addressing the call of/for public-facing humanities and Theatre Studies. Our speakers include Sarah Burdett (St Mary’s University), Helen Dallas (University of Oxford), Essaka Joshua (The University of Notre Dame), David O’Shaughnessy (NUI Galway), Francesca Saggini (University of Edinburgh). This research is part of the Horizon 2020 project called "Opening Romanticism: Reimagining Romantic Drama for New Audiences"(OpeRaNew) ID 892230 within the ERC programme Horizon 2020 MSCA-IF-2019. The PI is Francesca Saggini. See CORDIS website at https://cordis.europa.eu/project/id/892230
A Comparison of Adherence to Accessibility Standards of Local and National News Sites
Creators: name: Joiner, Amanda
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014
Subjects: Local news--Accessibility
Web development--Accessibility
Web journalism--Accessibility

description: The study will evaluate the accessibility standards of local North Carolina
newspaper companion websites when compared against larger national
newspaper websites' accessibility implementation. A sample of 10 news sites
selected from a list of all North Carolina newspaper companion websites will be
evaluated against 10 National News Sites. The selected sites will be tested using
WebAIM's WAVE accessibility evaluator to determine whether the sites adhere to
standards established by section 508 of the US Rehabilitation Act and the Web
Content Accessibility Guidelines (WCAG 2.0) established by the World Wide
Web Consortium (W3C). The results will provide new insights into the
accessibility and usability of the companion sites of North Carolina newspapers
for persons with disabilities when compared to the top newspapers in the country.
This study will fill a gap in the literature on the topic and be of interest to web
developers, persons with disabilities and the general public of North Carolina.
New insights on the spin-up of a neutron star during core-collapse
Creators: name: Kazeroni, Rémi
name: Guilet, Jérôme
name: Foglizzo, Thierry
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The spin of a neutron star at birth may be impacted by the asymmetric character of the explosion of its massive progenitor. During the first second after bounce, the spiral mode of the Standing Accretion Shock Instability (SASI) is able to redistribute angular momentum and spin-up a neutron star born from a non-rotating progenitor. Our aim is to assess the robustness of this process. We perform 2D numerical simulations of a simplified setup in cylindrical geometry to investigate the timescale over which the dynamics is dominated by a spiral or a sloshing mode. We observe that the spiral mode prevails only if the ratio of the initial shock radius to the neutron star radius exceeds a critical value. In that regime, both the degree of asymmetry and the average expansion of the shock induced by the spiral mode increase monotonously with this ratio, exceeding the values obtained when a sloshing mode is artificially imposed. With a timescale of 2-3 SASI oscillations, the dynamics of SASI takes place fast enough to affect the spin of the neutron star before the explosion. The spin periods deduced from the simulations are compared favorably to analytical estimates evaluated from the measured saturation amplitude of the SASI wave. Despite the simplicity of our setup, numerical simulations revealed unexpected stochastic variations, including a reversal of the direction of rotation of the shock. Our results show that the spin up of neutron stars by SASI spiral modes is a viable mechanism even though it is not systematic.
description: 11 pages, 12 figures, accepted for publication MNRAS. Minor changes following the referee report
Best Practices for Scientific Computing.
Creators: name: Wilson, G.
name: Aruliah, D. A.
name: Brown, C.T.
name: Chue Hong, N.P.
name: Davis, M.
name: Guy, R.T.
name: Haddock, S.H.D.
name: Huff, K.D.
name: Mitchell, I.M.
name: Plumbley, M.D.
name: Waugh, B.
name: White, E.P.
name: Wilson, P.
Publisher: name: UNESCO/IOC
Year: 2014
Subjects: subject: Software development
subject: Research validity
subject: Programming language
subject: Parameter Discipline::Cross-discipline
subject: Data Management Practices::Data analysis

description: Scientists spend an increasing amount of time building and using software. However, most scientists are never taught how to do this efficiently. As a result, many are unaware of tools and practices that would allow them to write more reliable and maintainable code with less effort. We describe a set of best practices for scientific software development that have solid foundations in research and experience, and that improve scientists' productivity and the reliability of their software. Software is as important to modern scientific research as telescopes and test tubes. From groups that work exclusively on computational problems, to traditional laboratory and field scientists, more and more of the daily operation of science revolves around developing new algorithms, managing and analyzing the large amounts of data that are generated in single research projects, combining disparate datasets to assess synthetic problems, and other computational tasks. Scientists typically develop their own software for these purposes because doing so requires substantial domain-specific knowledge. As a result, recent studies have found that scientists typically spend 30% or more of their time developing software [1],[2]. However, 90% or more of them are primarily self-taught [1],[2], and therefore lack exposure to basic software development practices such as writing maintainable code, using version control and issue trackers, code reviews, unit testing, and task automation.
Inga pezizifera Benth.
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Inga
Inga pezizifera

description: Inga pezizifera Benth.
(CR), Guabo, Guaba, Guaba de mono, Guabito (P).
 Terrestrial trees. Distribution in PILA 0–1000 m, low elevation mixed forest, mixed forest in transition to low elevation forest. Global distribution: Nicaragua to Brazil. Records: A. Chacón 292 (CR, MO). Uses: Firewood.
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
Characterization of the scission point from fission-fragment velocities
Creators: name: Caamaño, M.
name: Farget, F.
name: Delaune, O.
name: Schmidt, K. -H.
name: Schmitt, C.
name: Audouin, L.
name: Bacri, C. -O.
name: Benlliure, J.
name: Casarejos, E.
name: Derkx, X.
name: Fernández-Domínguez, B.
name: Gaudefroy, L.
name: Golabek, C.
name: Jurado, B.
name: Lemasson, A.
name: Ramos, D.
name: Rodríguez-Tajes, C.
name: Roger, T.
name: Shrivastava, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The isotopic-yield distributions and kinematic properties of fragments produced in transfer-induced fission of 240Pu and fusion-induced fission of 250Cf, with 9 MeV and 45 MeV of excitation energy respectively, were measured in inverse kinematics with the spectrometer VAMOS. The kinematic properties of identified fission fragments allow to derive properties of the scission configuration such as the distance between fragments, the total kinetic energy, the neutron multiplicity, the total excitation energy, and, for the first time, the proton- and neutron-number sharing during the emergence of the fragments. These properties of the scission point are studied as functions of the fragment atomic number. The correlation between these observables, gathered in one single experiment and for two different fissioning systems at different excitation energies, give valuable information for the understanding and modeling of the fission process.
description: 12 pages, 8 figures
Implicit Feedback in Information Retrieval: A Literature Analysis
Creators: name: Dollu, Vijay Deepak
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005
Subjects: Relevance Feedback
User Behaviors
Literature Review
Query expansion
Implicit Feedback

description: This literature review provides an overview of the various topics related to using implicit  feedback for information retrieval. Specific topics which are addressed are explicit  relevance feedback for query expansion and its advantages and disadvantages, user behaviors that provide implicit information to a system, techniques to implement implicit  feedback in systems and the advantages and disadvantages of using implicit feedback in  information retrieval systems. For behaviors of users that were studied by researchers,  this study provides a discussion on whether the researchers found them to be useful or  not. A discussion on the techniques with which these behaviors are implemented in  systems by researchers is presented to gain an understanding of how these behaviors  could be used in a system to interpret the behaviors of users. It is concluded that  information retrieval systems utilizing implicit feedback would help users find relevant  documents.
Master actions for massive spin-3 particles in D=2+1
Creators: name: Mendonça, E. L.
name: Dalmazi, D.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present here a relationship among massive self-dual models for spin-3 particles in $D=2+1$ via the master action procedure. Starting with a first order model (in derivatives) $S_{SD(1)}$ we have constructed a master action which interpolates among a sequence of four self-dual models $S_{SD(i)}$ where $i=1,2,3,4$. By analyzing the particle content of mixing terms, we give additional arguments that explain why it is apparently impossible to jump from the fourth order model to a higher order model. We have also analyzed similarities and differences between the fourth order $K$-term in the spin-2 case and the analogous fourth order term in the spin-3 context.
description: 16 pages
圆突鹰尺蛾线粒体基因组
Creators: name: 谢佶芹(Xie Jiqin)
Publisher: name: CNGB
Year: 2023
Subjects: Genome sequencing and assembly
Other
圆突鹰尺蛾线粒体基因组
Monoisolate
Evolution

description: 圆突鹰尺蛾线粒体基因组
Princesses, Mothers, Heroes, and Superheroes: Images of Jewish Women in Comic Books and Graphic Novels
Creators: name: Korenman, Alicia R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006
Subjects: Jewish women--United States--Social life and customs
Comic books, strips--United States--History and criticism
Jews--United States--Identity
Popular culture--United States--History--20th Century

description: This study examines the representations of Jewish women in comic books and graphic novels, starting with a discussion of common stereotypes about Jewish women in American popular culture. The primary sources under investigation include Gilbert Hernandez's Love and Rockets X, Aline Kominsky-Crumb's autobiographical works, the X-Men comic books, Art Spiegelman's Maus and Portrait of the Artist as a Young %@&*!, Joann Sfar's The Rabbi's Cat, and J.T. Waldman's Megillat Esther. The representations of Jewish women in comic books and graphic novels vary widely. And although certain stereotypes about Jewish women - especially the Jewish Mother and the Jewish American Princess - pervade American popular culture, most of the comics featuring Jewish characters do not seem to have been greatly influenced by these images.
Production yield of rare-earth ions implanted into an optical crystal
Creators: name: Kornher, Thomas
name: Xia, Kangwei
name: Kolesov, Roman
name: Kukharchyk, Nadezhda
name: Reuter, Rolf
name: Siyushev, Petr
name: Stöhr, Rainer
name: Schreck, Matthias
name: Becker, Hans-Werner
name: Villa, Bruno
name: Wieck, Andreas D.
name: Wrachtrup, Jörg
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Rare-earth ions doped into desired locations of optical crystals might enable a range of novel integrated photonic devices for quantum applications. With this aim, we have investigated the production yield of cerium and praseodymium by means of ion implantation. As a measure, the collected fluorescence intensity from both, implanted samples and single centers was used. With a tailored annealing procedure for cerium, a yield up to 53% was estimated. Praseodymium yield amounts up to 91%.
An Exploratory Study of Readers' Advisory Services to Children
Creators: name: Childress-Campbell, Emily
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013
Subjects: Children--Books & reading
Children's library services
Readers' advisory services

description: This qualitative research study explores the readers' advisory interview within the context of public library services to children. Eight practicing children's librarians were interviewed. The preferred methods of these librarians in helping children select books are discussed. Complexities and themes within the children's readers' advisory interview are also considered.
Life under a black sun
Creators: name: Opatrný, Tomáš
name: Richterek, Lukáš
name: Bakala, Pavel
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Optics (physics.optics)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: Life is dependent on the income of energy with low entropy and the disposal of energy with high entropy. On Earth, the low-entropy energy is provided by solar radiation and the high-entropy energy is disposed as infrared radiation emitted into the cold space. Here we turn the situation around and assume cosmic background radiation as the low-entropy source of energy for a planet orbiting a black hole into which the high-entropy energy is disposed. We estimate the power that can be produced by thermodynamic processes on such a planet, with a particular interest in planets orbiting a fast rotating Kerr black hole as in the science fiction movie {\em Interstellar}. We also briefly discuss a reverse Dyson sphere absorbing cosmic background radiation from the outside and dumping waste energy to a black hole inside.
description: 8 pages, 6 figures. Replaced with the version published in Am. J. Phys
title: Σύγκριση των τεχνικών καθορισμού του πλήθους ομάδων σε σύνολα πολυδιάστατων δεδομένων
title: Comparison of techniques identifying the number of clusters present in multivariate datasets
titleType: AlternativeTitle
Creators: name: Γεωργίου, Αναστάσιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Συσταδοποίηση
subject: Κριτήρια αξιολόγησης αλγορίθμων

description: Η ανάλυση ομαδοποίησης είναι μια θεμελιώδης τεχνική στην επιστήμη των δεδομένων, με στόχο την αποκάλυψη εγγενών μοτίβων και σχέσεων μέσα σε πολύπλοκα σύνολα δεδομένων. Η παρούσα Διπλωματική Εργασία διερευνά και συγκρίνει διάφορα κριτήρια αξιολόγησης των τεχνικών ομαδοποίησης σε πολυδιάστατα σύνολα δεδομένων για τον εντοπισμό του βέλτιστου αριθμού συστάδων. Για την αξιολόγηση της σταθερότητας και της αποτελεσματικότητας των κριτηρίων αξιολόγησης χρησιμοποιούνται προσομοιωμένα δεδομένα με γνωστές δομές συστάδων. Διάφορα κριτήρια της βιβλιογραφίας όπως το μέτρο Silhouette και το κριτήριο Calinski Harabaz χρησιμοποιούνται για τη σύγκριση και πρόταση του βέλτιστου αριθμού συστάδων. Τα ευρήματα υπογραμμίζουν την ευαισθησία των κριτηρίων αξιολόγησης στο αρχικό επίπεδο διαχωρισμού των ομάδων μέσω της απόστασης αλλά και την ανάγκη για σωστή κάθε φορά επιλογή μεθόδου συσταδοποίησης τονίζοντας τη σημασία της επιλογής των κατάλληλων τεχνικών με βάση τα χαρακτηριστικά των δεδομένων. Η παρούσα εργασία συνεισφέρει πολύτιμες γνώσεις για την επιλογή του βέλτιστου αριθμού συστάδων και την ανάδειξη των διαφορετικών χαρακτηριστικών των κριτηρίων, προσφέροντας μέσω παραδειγμάτων κάποια συμπεράσματα για το θέμα αυτό. Προτείνονται μελλοντικές κατευθύνσεις έρευνας για τη διερεύνηση υβριδικών προσεγγίσεων και την αντιμετώπιση προκλήσεων στη ομαδοποίηση δεδομένων μεγάλης κλίμακας.
Searches for Higgs boson pair production in the $hh\to bbττ, γγWW*, γγbb, bbbb$ channels with the ATLAS detector
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Searches for both resonant and non-resonant Higgs boson pair production are performed in the $hh\to bbττ, γγWW^*$ final states using 20.3 fb$^{-1}$ of $pp$ collision data at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the Large Hadron Collider. No evidence of their production is observed and 95\% confidence level upper limits on the production cross sections are set. These results are then combined with the published results of the $hh\to γγbb, bbbb$ analyses. An upper limit of 0.69 (0.47) pb on the non-resonant Standard Model like $hh$ production is observed (expected), corresponding to 70 (48) times of the SM $gg\to hh$ cross section. For production via narrow resonances, cross section limits of $hh$ production from a heavy Higgs boson decay are set as a function of the heavy Higgs boson mass. The observed (expected) limits range from 2.1 (1.1) pb at 260 GeV to 0.011 (0.018) pb at 1000 GeV. These results are interpreted in the context of two simplified scenarios of the Minimal Supersymmetric Standard Model.
description: 26 pages plus author list+cover page (43 pages total), 7 figures, 6 tables, submitted to Phys. Rev. D. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2013-33/
Φυσική δραστηριότητα και ένθερμη προσήλωση στην εργασία (Grit)
Creators: name: Σλάμαρης, Δημήτριος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2020
Subjects: subject: Φυσική δραστηριότητα
subject: Σωματική άσκηση
subject: Επιμονή στην προσπάθεια
subject: Συνέπεια του ενδιαφέροντος
subject: Πάθος
subject: Ένθερμη προσήλωση
subject: ΜΕΤ

description: Σκοπός της παρούσας έρευνας είναι να εξετάσει τη σχέση μεταξύ της φυσικής δραστηριότητας και της ένθερμης προσήλωσης στην εργασία. Πιο συγκεκριμένα, θα επιδιωχθεί να εξεταστεί το κατά πόσο επηρεάζεται η επιμονή και το πάθος των ατόμων, που η άθληση αποτελεί ή δεν αποτελεί την καθημερινότητά τους, για την επιδίωξη των στόχων τους με αποτέλεσμα να ανταπεξέρχονται πιο αποτελεσματικά στην πίεση του εργασιακού τους χώρου. Τα δεδομένα της έρευνας συλλέχθηκαν μέσω ενός ηλεκτρονικού ημερολογίου, από τις απαντήσεις 205 ατόμων. Ζητήθηκε αρχικά από τους συμμετέχοντες να δώσουν απάντηση σε ορισμένα δημογραφικά στοιχεία όπως το φύλλο, η ηλικία και οι μέρες εργασίας τους. Ύστερα, κλήθηκαν να απαντήσουν σε ερωτήσεις σχετικές με τον βαθμό έντασης, τις ημέρες και το χρονικό όριο των δραστηριοτήτων που πραγματοποίησαν την τελευταία εβδομάδα, ενώ το ερωτηματολόγιο ολοκληρωνόταν με ερωτήσεις σχετικές με την επιμονή και το πάθος των ατόμων προς ένα στόχο. Σύμφωνα με τα αποτελέσματα της έρευνας, η φυσική δραστηριότητα φαίνεται να έχει θετική επίδραση στην ένθερμη προσήλωση των εργαζομένων, ωστόσο περαιτέρω μελέτες θα πρέπει να διεξαχθούν για να βγουν ασφαλή συμπεράσματα.
title: Barriers and Enablers to a Circular Economy in Small Island Destinations: The Case of the Orkney Islands, Scotland
Creators: name: Sciacca, Angelo
Publisher: name: Edinburgh Napier University
Year: 2023

description: The tourism sector is often the main socio-economic activity for islands whilst representing a source of negative impacts. The circular economy (CE), in this sense, is increasingly considered a promising approach to tourism sustainability in such settings. The CE – regarded as the realisation of a closed loop of material flows in the economic system – is not free of enablers and disablers that should be understood to inform planning. Existing studies provide an overview of these disablers and enablers that industries face towards the adoption of CE practices, but they are largely based on one-size-fits-all approaches. This study builds upon the key assumption that islands require tailored approaches given their islandness, which is the result of the often physical/digital isolation, regional fragmentation, boundedness and smallness of their territories. Consequently, contributions are limited when it comes to small island destinations where methodologies should be context-based with an understanding of the relationship that exists between islandness and the CE.

Accordingly, this study investigated the tourism sector transition of small island destinations to a CE and the hampering/facilitating role of islandness. The investigation employed a qualitative multi-method research design with an interpretive philosophical underpinning, supported by semi-structured interviews and documentary analysis. The Orkney Islands, in Scotland, were selected as a case study. This study represents the first empirical effort seeking to delineate a territorial understanding of the CE in small island destinations using the spatial-geographical concept of islandness. Key findings revealed that the islandness of the Orkney Islands drives, hampers and enablers the tourism transition to a CE in economic, technical, social and institutional ways. Findings also show that due to the islandness of the Orkney Islands, the COVID-19 measures have accentuated the need and, in some cases, facilitated the transition to a CE. Islandness-related drivers, barriers and enablers are enshrined in the major contribution of this study, which is an indicative framework that could be considered in other small islands for the promotion of a CE in the tourism sector.
Supplementary document for Localized Transverse Flow Measurement with Dynamic Light Scattering Line-Scan OCT - 6218876.pdf
Creators: name: HAN, LE
name: Tan, Bingyao
name: Schmetterer, Leopold
name: Bizheva, Kostadinka
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplementary file
Supplementary document for Localized Transverse Flow Measurement with Dynamic Light Scattering Line-Scan OCT - 6245902.pdf
Creators: name: HAN, LE
name: Tan, Bingyao
name: Schmetterer, Leopold
name: Bizheva, Kostadinka
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: document
Historical Records Repositories Online: Presence and Quality of One Hundred Web Sites
Creators: name: Glenn, Emily J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004
Subjects: Archives--Technological innovations
Surveys Archival Resources
Archives--Reference services
Archival resources--United States and Canada

description: This paper examines the presence and quality of web sites of one hundred randomly selected local history repositories in the United States. Emphasizing elements of remote reference services, this survey reveals that of the seventy-three repositories with an Internet presence, only thirty sites did present substantial content pertinent to an archival space. Institutional constraints like funding, staff resources, and training, may put local historical societies at a disadvantage compared to their counterparts in established resource-rich institutions. Staffing profiles of all repositories were examined to determine if repositories with few staff could demonstrate repository staff knowledge of user behavior, familiarity with other archival resources, command of digital projects, application of professional resources, and technical skills necessary to provide a high-quality Internet presence.
Blow-up Phenomena for Compressible Euler Equations with Non-vacuum Initial Data
Creators: name: Wong, Sen
name: Yuen, Manwai
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35B44, 35L67, 35Q31, 35B30

description: In this article, we study the blowup phenomena of compressible Euler equations with non-vacuum initial data. Our new results, which cover a general class of testing functions, present new initial value blowup conditions. The corresponding blowup results of the 1-dimensional case in non-radial symmetry are also included.
description: 19 pages, Key Words: Euler Equations, Integration Method, Blowup, Radial Symmetry, Non-vacuum, Initial Value Problems
Macrolobium costaricense W. C. Burger
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Macrolobium
Macrolobium costaricense

description: Macrolobium costaricense W.C.Burger
Pata de elefante (CR).
 Terrestrial trees. Distribution in PILA 0–900 m, low elevation mixed forest, mixed forest in transition to low elevation forest. Global distribution: Costa Rica to Colombia. Records: G. Herrera 3088 (MO).
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
Design and Implementation of a Database-driven Digital Video Application System for the School of Education of the University of North Carolina at Chapel Hill
Creators: name: Chen, Li
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2003
Subjects: Information system--Design
Interface design
Web database
Database Management System

description: Blackboard, a course database system, is widely used in the University of North Carolina at Chapel Hill. It provides many technical support services to registered courses. Two of its most important functions are remote video viewing through Internet and comment posting on discussion forum. The current Blackboard system, however, is inconvenient for users to control them simultaneously. This paper describes the design and development of a database-driven and web-based digital video application system -- a novel working prototype which integrates the function of discussion forum and video/audio application based on specified needs for a community of users.
Supplementary document for Controlling light emission by a thermalized ensemble of colloidal quantum dots with a metasurface - 6205575.pdf
Creators: name: Monin, Hector
name: Loirette--Pelous, Aurelian
name: De Leo, Eva
name: Rossinelli, Aurelio
name: Prins, Ferry
name: Norris, David
name: Bailly, Elise
name: Hugonin, Jean-Paul
name: vest, benjamin
name: Greffet, Jean-Jacques
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Materials and methods
title: Κοινωνικοοικονομικοί παράγοντες, παχυσαρκία, κάπνισμα και κατάσταση υγείας. Διαχωρισμός αιτίας και αποτελέσματα στην Ευρώπη μέσω διαχρονικών ερευνών
title: Socioeconomic conditions, obesity, smoking and health. Disentangling cause and effect in Europe using panel data
titleType: AlternativeTitle
Creators: name: Παπαγεωργίου, Σωτήριος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Υγεία
subject: Κάπνισμα
subject: Παχυσαρκία
subject: SHARE
subject: Κοινωνικοοικονομικοί παράγοντες
subject: Δεδομένα πάνελ

description: Στην παρούσα εργασία έγινε μία προσπάθεια εύρεσης πιθανής σχέσης της παχυσαρκίας, του καπνίσματος και διαφόρων κοινωνικοοικονομικών παραγόντων με την κατάσταση της υγείας. Για το σκοπό αυτό χρησιμοποιήθηκε η διαχρονική έρευνα SHARE, η οποία εστιάζει σε άτομα ηλικίας άνω των 50 ετών ανά την Ευρώπη, και συγκεκριμένα τα κύματα 7 και 8. Αναλυτικά, στο πρώτο κεφάλαιο γίνεται αναφορά στην έννοια της παχυσαρκίας, τα αίτια και οι συνέπειες της. Στο δεύτερο κεφάλαιο εξετάζεται η προέλευση του καπνίσματος, τα αίτια και οι συνέπειες του, καθώς και η σχέση καπνίσματος και παχυσαρκίας μέσω παλιότερων ερευνών. Το τρίτο κεφάλαιο αναφέρεται στην έννοια της αυτό-αξιολόγησης της υγείας, που χρησιμοποιούμε σαν εξαρτημένη μεταβλητή, και το τέταρτο περιέχει πληροφορίες σχετικά με την έρευνα SHARE. Το πέμπτο κεφάλαιο αναλύει τα χαρακτηριστικά των δεδομένων πάνελ και το έκτο το στατιστικό υπόβαθρο της ανάλυσης που θα ακολουθηθεί. Στο έβδομο αναφέρεται το στατιστικό μοντέλο που χρησιμοποιήθηκε, η περιγραφική ανάλυση των μεταβλητών και η στατιστική ανάλυση. Τέλος, παρουσιάζονται αναλυτικά τα συμπεράσματα της ανάλυσης και η περαιτέρω μελέτη που μπορεί να διεξαχθεί. Η παρουσίαση των περιγραφικών στοιχείων του πληθυσμού της ανάλυσης πραγματοποιήθηκε μέσω διαγραμμάτων (κυκλικό, ιστόγραμμα και ραβδόγραμμα) και διάφορων περιγραφικών πινάκων του πληθυσμού. Για τη στατιστική επεξεργασία των στοιχείων εφαρμόσαμε μοντέλα λογιστικής παλινδρόμησης, καθώς η απαντητική μας μεταβλητή είναι δίτιμη, και με διερεύνηση καταλήξαμε στις μεταβλητές που χρησιμοποιήθηκαν και τα αποτελέσματα που θα παραθέσουμε παρακάτω. Το σύνολο των ελέγχων της συγκεκριμένης μελέτης έγιναν σε επίπεδο στατιστικής σημαντικότητας 5%, ενώ η ανάλυση πραγματοποιήθηκε με τη χρήση του στατιστικού προγράμματος SPSS 27.
title: Προσαρμογή πραγματικών δεδομένων ζημιών σε κατανομές με βαριές ουρές : εναλλακτικά μοντέλα και σύγκριση της απόδοσής τους
title: Fitting real claims data to heavy tail distributions : alternative models and their efficacy comparison
titleType: AlternativeTitle
Creators: name: Αναστασίου, Θεοδόσιος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Βαριές ουρές
subject: Weibull
subject: Προσαρμογή δεδομένων
subject: Ασφαλιστικά δεδομένα

description: Είναι γνωστό ότι τα ασφαλιστικά δεδομένα ζημιών έχουν συνήθως βαριά δεξιά ουρά, θετική λοξότητα και υψηλή κύρτωση. Στο πλαίσιο αυτό οι αναλογιστές είναι σε συνεχή αναζήτηση νέων δυναμικών μοντέλων με σκοπό την καλύτερη περιγραφή των ασφαλιστικών δεδομένων. Η παρούσα διπλωματική εργασία πραγματεύεται την εισαγωγή μιας νέας οικογένειας κατανομών με βαριά ουρά. Για αυτή την οικογένεια κατανομών θα παρουσιάσουμε αναλυτικά την ειδική περίπτωση της Weibull. Αφού πρώτα αναφέρουμε βασικά χαρακτηριστικά και στατιστικές ιδιότητες της κατανομής θα πραγματοποιήσουμε προσαρμογή της κατανομής σε ένα σύνολο ασφαλιστικών δεδομένων, που προέρχονται από πραγματικές ζημιές αυτοκινήτου Ελληνικής ασφαλιστικής εταιρείας. Τέλος, θα συγκρίνουμε την προσαρμογή της νέας κατανομής με άλλες γνωστές στην αναλογιστική κοινότητα κατανομές με βαριά ουρά και θα υπολογίσουμε κάποια γνωστά μέτρα κινδύνου.
Quantum entanglement
Creators: name: Hadjiivanov, Ludmil
name: Todorov, Ivan
Publisher: name: arXiv
Year: 2015
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Popular Physics (physics.pop-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Expository paper providing a historical survey of the gradual transformation of the "philosophical discussions" between Bohr, Einstein and Schrödinger on foundational issues in quantum mechanics into a quantitative prediction of a new quantum effect, its experimental verification and its proposed (and loudly advertised) applications. The basic idea of the 1935 paper of Einstein-Podolsky-Rosen (EPR) was reformulated by David Bohm for a finite dimensional spin system. This allowed John Bell to derive his inequalities that separate the prediction of quantum entanglement from its possible classical interpretation. We reproduce here their later (1971) version, reviewing on the way the generalization (and mathematical derivation) of Heisenberg's uncertainty relations (due to Weyl and Schrödinger) needed for the passage from EPR to Bell. We also provide an improved derivation of the quantum theoretic violation of Bell's inequalities. Soon after the experimental confirmation of the quantum entanglement (culminating with the work of Alain Aspect) it was Feynman who made public the idea of a quantum computer based on the observed effect.
description: 15 pages, 2 figures. Dedicated to the memory of Professor Christo Christov (1915-1990)
Multimedia performance evaluation of ethernet and token ring media access protocols:  a network comparison
Creators: name: LaHue, Daniel A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999
Subjects: Computer networks
Local area networks (Computer networks)--Evaluation
Data transmission systems

description: This paper and accompanying project examines which type of time-division multiplexing media access protocol, the Carrier Sense Multiple Access (CSMA) of Ethernet or the token passing of token ring, is best able to fulfill the stringent isochronous performance demands required of today's resource-hungry multimedia networks, specifically the requirements of high throughput, low latency and jitter, and minimal error rates. Using performance bounds accepted by other researchers as sufficient to ensure quality isochronous transmission, that of (1) the throughput rate being equal to or less than the playback rate; (2) the latency in transmitting each packet ranging from 20 to 400 milliseconds and the variance or jitter being less than 80 milliseconds; and (3) the rate of lost packets ranging from 0.01--1.001, this paper approaches a solution first from the theoretical and then integrates into the final conclusion an analytical, C++ software evaluation test component that models network performance under optimum conditions. The immediate  benefit of the entire study is the identification of one media access protocol, Ethernet or Token Ring, over its counterpart as being superior for isochronous applications as defined by the above performance requirements, and the long-term consequence of this identification will be facilitating for future network designers, including those of digital libraries, the selection of the best network architecture for their multimedia environments.
Pterocarpus rohrii Vahl
Creators: name: MONRO, A. K.
name: SANTAMARÍA-AGUILAR, D.
name: GONZÁLEZ, F.
name: CHACÓN, O.
name: SOLANO, D.
name: RODRÍGUEZ, A.
name: ZAMORA, N.
name: FEDELE, E.
name: CORREA, M.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Pterocarpus
Pterocarpus rohrii

description: Pterocarpus rohrii Vahl
Sangrillo, Sangregado (CR), Sangre de gallo, Sangre, Cricamola, Suela (P).
 Terrestrial trees. Distribution in PILA 0–1600 m, low elevation mixed forest, mixed forest in transition to low elevation forest, mixed forest in transition to cloud forest, cloud forest. Global distribution: Mexico, Guatemala, Nicaragua, Costa Rica, Colombia to the Guyanas, Brazil, Argentina. Records: A. Rodríguez, Sept 29, 2007 (Field obs.). Uses: timber, medicinal.
description: Published as part of MONRO, A. K., SANTAMARÍA-AGUILAR, D., GONZÁLEZ, F., CHACÓN, O., SOLANO, D., RODRÍGUEZ, A., ZAMORA, N., FEDELE, E. & CORREA, M., 2017, A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama, pp. 448-450 in Phytotaxa 322 (1) on pages 448-450, DOI: 10.11646/phytotaxa.322.1.1, http://zenodo.org/record/13698397
Intermediate Defect Groups, Polarization Pairs, and Non-invertible Duality Defects
Creators: name: Lawrie, Craig
name: Yu, Xingyang
name: Zhang, Hao Y.
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023
Subjects: symmetry, global
space-time, dimension
string model, Type IIB
field theory, conformal
defect
field theory
polarization
duality
buildings
family
stacking
gauge field theory
lattice
topological
self-duality
structure

description: Within the framework of relative and absolute quantum field theories (QFTs), we present a general formalism for understanding polarizations of the intermediate defect group and constructing non-invertible duality defects in theories in $2k$ spacetime dimensions with self-dual gauge fields. We introduce the polarization pair, which fully specifies absolute QFTs as far as their $(k-1)$-form defect groups are concerned, including their $(k-1)$-form symmetries, global structures (including discrete $\theta$-angle), and local counterterms. Using the associated symmetry TFT, we show that the polarization pair is capable of succinctly describing topological manipulations, e.g., gauging $(k-1)$-form global symmetries and stacking counterterms, of absolute QFTs. Furthermore, automorphisms of the $(k-1)$-form charge lattice naturally act on polarization pairs via their action on the defect group; they can be viewed as dualities between absolute QFTs descending from the same relative QFT. Using this formalism, we present a prescription for building non-invertible symmetries of absolute QFTs. A large class of known examples, e.g., non-invertible defects in 4D $\mathcal{N}=4$ super-Yang--Mills, can be reformulated via this prescription. As another class of examples, we identify and investigate in detail a family of non-invertible duality defects in 6D superconformal field theories (SCFTs), including from the perspective of the symmetry TFT derived from Type IIB string theory.