cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Set-to-Sequence Methods in Machine Learning: a Review
Creators: name: Jurewicz, Mateusz
name: Strømberg-Derczynski, Leon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: A.1; I.2.6
subject: 68T07 (Primary) 68T01 (Secondary)

description: Machine learning on sets towards sequential output is an important and ubiquitous task, with applications ranging from language modeling and meta-learning to multi-agent strategy games and power grid optimization. Combining elements of representation learning and structured prediction, its two primary challenges include obtaining a meaningful, permutation invariant set representation and subsequently utilizing this representation to output a complex target permutation. This paper provides a comprehensive introduction to the field as well as an overview of important machine learning methods tackling both of these key challenges, with a detailed qualitative comparison of selected model architectures.
description: 46 pages of text, with 10 pages of references. Contains 2 tables and 4 figures. Updated version includes expanded notes on method comparison
Investigation of Flow Characteristics inside a Dual Bell Nozzle with and without Film Cooling
Creators: name: Verma, Mayank
name: Arya, Nitish
name: De, Ashoke
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In this study, we perform a two-dimensional axisymmetric simulation to assess the flow characteristics and understand the film cooling process in a dual bell nozzle. The secondary stream with low temperature is injected at three different axial locations on the nozzle wall, and the simulations are carried out to emphasize the impact of injection location (secondary flow) on film cooling of the dual bell nozzle. The cooling effect is demonstrated through the temperature and pressure distributions on the nozzle wall or, in-turn, the separation point movement. Downstream of the injection point, the Mach number and temperature profiles document the mixing of the main flow and secondary flow. The inflection region is observed to be the most promising location for the injection of the secondary flow. We have further investigated the effect of Mach number of the secondary stream. The current study demonstrates that one can control the separation point in a dual bell nozzle with the help of secondary injection (Mach number) so that an optimum amount of thrust can be achieved.
Formation and light guiding properties of dark solitons in one-dimensional waveguide arrays
Creators: name: Smirnov, Eugene
name: Rueter, Christian E.
name: Stepic, Milutin
name: Shandarov, Vladimir
name: Kip, Detlef
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We report on the formation of dark discrete solitons in a nonlinear periodic system consisting of evanescently-coupled channel waveguides that are fabricated in defocusing lithium niobate. Localized nonlinear dark modes displaying a phase jump in the center that is located either on-channel (mode A) or in-between channels (mode B) are formed, which is to our knowledge the first experimental observation of mode B. By numerical simulations we find that the saturable nature of the nonlinearity is responsible for the improved stability of mode B. The ability of the induced refractive index structures to guide light of a low-power probe beam is demonstrated.
description: 4 pages, 6 figures, submitted to Physical Review Letters
A New Reading of Los trabajos de Persiles y Sigismunda
Creators: name: Grilli, Giuseppe
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2015

description:

Miguel de Cervantes’ last book, published posthumously, Los trabajos de Persiles y Sigismunda (1617) has been considered a ‘Byzantine novel’; recently it has been studied from a different  perspective that includes the direct knowledge of the Greek novel and the neoclassical projection of the first years of the XVII century. This new perspective of investigation offers readers and researchers new viewpoints and different hermeneutic links. Miguel Alarcos Martínez, versant in classical philology and modern literature, reads book in a new critical way.

description: Rassegna iberistica
The Art of Peer Support: Work, Health, Consumer Participation, and New Forms of Citizenship in Late Twentieth-Century Mental Health Care in British Columbia
Creators: name: Boschma, Geertje
name: Devane, Courtney
Publisher: name: BC Studies: The British Columbian Quarterly
Year: 2019

description: Within a new discourse of self-help, patient rights, rehabilitation, and recovery peer support emerged as a new field of work and imagination in post-1970s Canadian mental health care. Patients had an essential role in imagining, creating and enacting new forms of citizenship that critiqued and provided new alternatives for health and healing in the new context of community mental health. This paper explores the history of peer support as it originally evolved within the patient liberation movement in the 1970s and the way it became incorporated as an accepted form of work in British Columbia (BC)’s evolving mental health system as of the 1990s.
description: BC Studies: The British Columbian Quarterly, No 202 (2019): Arts, Crafts, and Healing: Understanding Social Citizenship in British Columbia
Efficient recursive least squares solver for rank-deficient matrices
Creators: name: Staub, Ruben
name: Steinmann, Stephan N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Software (cs.MS)
subject: FOS: Computer and information sciences

description: Updating a linear least squares solution can be critical for near real-time signalprocessing applications. The Greville algorithm proposes a simple formula for updating the pseudoinverse of a matrix A $\in$ R nxm with rank r. In this paper, we explicitly derive a similar formula by maintaining a general rank factorization, which we call rank-Greville. Based on this formula, we implemented a recursive least squares algorithm exploiting the rank-deficiency of A, achieving the update of the minimum-norm least-squares solution in O(mr) operations and, therefore, solving the linear least-squares problem from scratch in O(nmr) operations. We empirically confirmed that this algorithm displays a better asymptotic time complexity than LAPACK solvers for rank-deficient matrices. The numerical stability of rank-Greville was found to be comparable to Cholesky-based solvers. Nonetheless, our implementation supports exact numerical representations of rationals, due to its remarkable algebraic simplicity.
Elicitation of vocabulary from the Hupa Language Dictionary
Creators: name: Parker, Verdena
name: Campbell, Amy
name: Newbold, Lindsey
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio files VP-010807-07, VP-010807-08, and VP-010807-09: Elicitation of vocabulary from the Hupa Language Dictionary. English headwords 'lonesome' to 'look' (VP-010807-07), 'look after' to 'lurch' (VP-010807-08), and 'madrone' to 'medicine' (VP-010807-09).
A Magnetic Alpha-Omega Dynamo in Active Galactic Nuclei Disks: I. The Hydrodynamics of Star-Disk Collisions and Keplerian Flow
Creators: name: Pariev, Vladimir I.
name: Colgate, Stirling A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A magnetic field dynamo in the inner regions of the accretion disk surrounding the supermassive black holes in AGNs may be the mechanism for the generation of magnetic fields in galaxies and in extragalactic space. We argue that the two coherent motions produced by 1) the Keplerian motion and 2) star-disk collisions, numerous in the inner region of AGN accretion disks, are both basic to the formation of a robust, coherent dynamo and consequently the generation of large scale magnetic fields. They are frequent enough to account for an integrated dynamo gain, e^{10^{9}} at 100 gravitational radii of a central black hole, many orders of magnitude greater than required to amplify any seed field no matter how small. The existence of extra-galactic, coherent, large scale magnetic fields whose energies greatly exceed all but massive black hole energies is recognized. In paper II (Pariev, Colgate, and Finn 2006) we argue that in order to produce a dynamo that can access the free energy of black hole formation and produce all the magnetic flux in a coherent fashion the existence of these two coherent motions in a conducting fluid is required. The differential winding of Keplerian motion is obvious, but the disk structure depends upon the model of "alpha", the transport coefficient of angular momentum chosen. The counter rotation of driven plumes in a rotating frame is less well known, but fortunately the magnetic effect is independent of the disk model. Both motions are discussed in this paper, paper I. The description of the two motions are preliminary to two theoretical derivations and one numerical simulation of the alpha-omega dynamo in paper II. (Abridged)
description: 34 pages, 1 figure, accepted by ApJ
Onetti fuera de sí. «Jamás leí a Onetti»
Creators: name: Mancini, Adriana
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2015

description:

This collection published by Editorial Katatay, «Onetti out of his mind», carried out by the researchers Teresa Basile and Enrique Foffani, gathers a group of essays that aims to represent the work of the Uruguayan writer taking into account its relationship with other artistic expressions: music, painting, cinema, similarities with other poetic works from Rio de la Plata or unaddressed issues such as old age or gender paradigms. An unlikely Onetti that exceeds the sphere of previous studies and delivers unexpected new readings. This article about Onetti out of his mind deals with all the aspects taking as a thread the different traditions that use of the expression ‘out of his mind’ throughout time.

description: Rassegna iberistica
The Memory Project: Critical Collective Memory Work with LGBTQ Seniors
Creators: name: Robson, Claire Elizabeth
Publisher: name: BC Studies: The British Columbian Quarterly
Year: 2019

description: To read the accompanying Digital Story visit: https://bcstudies.com/digital_stories/hidden/ This presentation reports upon one piece of data – a memory box made by a participant in a project conducted as part of the author’s federally funded postdoctoral research in Simon Fraser University’s Department of Gender, Sexuality, and Women’s Studies. The two-year project (The Memory Project) engaged LGBTQ elders living in the Grandview Woodlands area of Vancouver’s Eastside in collaborative critical arts practices. These practices were designed to expand and complicate assumptions about age and sexual identity, to lend voice and agency to queer seniors whose issues and culture are often overlooked in our society, to explore the potential of critical arts practices as a means to generate social change, and to construct strong communities.
description: BC Studies: The British Columbian Quarterly, No 202 (2019): Arts, Crafts, and Healing: Understanding Social Citizenship in British Columbia
Confronting Narratives of Loss: Art and Agency in Dementia and Dementia Care
Creators: name: Puurveen, Gloria
name: Phinney, Alison
Publisher: name: BC Studies: The British Columbian Quarterly
Year: 2019

description: In this essay, the authors share a conversation about a project that involved students and faculty from Emily Carr University and the University of British Columbia School of Nursing who partnered with Fraser Health Authority to create art for a transitional care unit in Surrey, BC. Yale Road Centre served as a temporary placement for people with dementia who were waiting for a permanent bed in a long-term care facility. The authors describe the background of the project: how it was first conceived and the art created, and the research that was conducted to learn about its impact for residents. Drawing on the findings of this work, they discuss notions of place and place-making in relation to art and the temporary structures of transitional care. They further explore the potential for art in the context of dementia and dementia care to support social citizenship through engaging acts of creative agency.
description: BC Studies: The British Columbian Quarterly, No 202 (2019): Arts, Crafts, and Healing: Understanding Social Citizenship in British Columbia
Upper ocean response to storms: a resonant system
Creators: name: Crawford, Gregory B.
Publisher: name: University of British Columbia
Year: 2008

description: At mid-latitudes during the fall and winter, the mixed layer temperature (MLT) of the ocean decreases, mostly in short bursts associated with storms. These events have been dubbed episodic cooling events, although it has been shown (Large et al. 1986) that the associated decrease in MLT is primarily due to vertical heat re-distribution within the water column rather than heat loss to the atmosphere. This thesis describes an investigation of the phenomenon of episodic cooling. The approach taken was to identify a vertical mixing model which reproduced available observations of the ocean response to storms and use that model in a series of numerical experiments to test the importance of initial conditions and atmospheric forcing. Observations from the Ocean Storms Experiment were used to define pre-storm ocean conditions, surface forcing during storms, and several measures of the ocean response. Three one-dimensional mixing models (Mellor-Yamada Level 2 1/2 [MY; Mellor and Yamada1974]; Price-Weller-Pinkel [PWP; Price et al. 1986]; Large-McWilliams-Doney [LMD; Large et al. 1993]) were tested using the Ocean Storms data. All three models reproduced observed dynamical measures of the ocean response. The LMD model reproduced changes in potential energy and mixed layer temperature better than PWP and MY, and was therefore selected for the numerical experiments. Studies with the LMD model showed that the rotation rate of the wind is a key component to large episodic cooling events. The upper ocean operates as a resonant system with a resonant frequency equal to the local inertial frequency, f. For winds rotating at f during a storm, the input of inertial kinetic energy is maximized, as are the net changes in inertial kinetic energy, potential energy, and MLT. Under such conditions, significant mixing is observed within the thermocline, even though the mixed layer depth may notchange drastically. Winds rotating off the inertial frequency lead to significantly reduced ocean responses and vertical mixing below the mixed layer. Large background currents can modulate the ocean response to a storm significantly; large surface heat fluxes add or remove heat from the upper ocean, but have little impact on the vertical mixing.
Intervention strategies concerning English as a second language learning in Greek students with learning difficulties
Creators: name: Τσουκανάρα, Ευτυχία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Κατάκτηση της Αγγλικής ως δεύτερη ξένη γλώσσα
Δυσκολία στην ορθογραφία
Μορφολογική παρέμβαση
Learning English as a second language
Spelling disability
Morphological Intervention

description: This exploratory study aimed to investigate the effects of an intervention training program on spelling in English as a second language for students with learning disabilities. A design was employed in order to assess students firstly in their native language (Greek) and then in a foreign language (English) with the aim to determine the differences in errors between the two languages and how a systematic program can be effective. The study included 7 students aged 9 + facing severe learning disabilities. The preliminary assessment was based on 4 Greek standardized tests (reading words and pseudowords, spelling words, written vocabulary) and 2 English standardized tests (reading words, spelling words) and 2 English non-standardized ones (reading words, spelling words) categorized in regular, rule-governed and irregular items. The intervention was focused on English spelling which was their main difficulty and the main enquiry of the study and had a crucial impact in enhancing the right word formation. The main outcome was that students improved to a greater extent spelling of derivational words, such as ‘risk – risky’ and to a less extent compound words such as ‘sunlight’
description: Σκοπός της έρευνας ήταν να εξερευνήσει τις επιδράσεις ενός προγράμματος παρέμβασης όσον αφορά την Ορθογραφία της Αγγλικής ως δεύτερη ξένη γλώσσα σε μαθητές με μαθησιακές δυσκολίες. Ένας σχεδιασμός προγράμματος χρησιμοποιήθηκε, για να εξετάσει τους μαθητές πρώτα στην μητρική τους γλώσσα (Ελληνικά) και έπειτα στην ξένη γλώσσα (Αγγλικά), με σκοπό να προσδιορίσει τις διαφορές στα λάθη μεταξύ των δύο γλωσσών και κατά πόσο ένα συστηματικό πρόγραμμα μπορεί να είναι αποτελεσματικό. Η έρευνα περιελάμβανε 7 μαθητές ηλικίας 9 + με σημαντικές μαθησιακές δυσκολίες. Η προκαταρκτική αξιολόγηση βασίστηκε σε 4 ελληνικά σταθμισμένα τεστ (ανάγνωση λέξεων και ψευδολέξεων, ορθογραφία λέξεων και τεστ λεξιλογίου) και σε 2 αγγλικά σταθμισμένα τεστ (ανάγνωση λέξεων, ορθογραφία λέξεων) και 2 μη σταθμισμένα (ανάγνωση λέξεων, ορθογραφία λέξεων), κατηγοριοποιημένα σε ομαλές, με τη χρήση κανόνων και ανώμαλες λέξεις. Η παρέμβαση επικεντρώθηκε στην ορθογραφία της Αγγλικής, η οποία ήταν η κύρια δυσκολία τους και το κύριο ερώτημα της έρευνας. Η παρέμβαση είχε σημαντική επίδραση στο σωστό σχηματισμό λέξεων. Το κύριο αποτέλεσμα ήταν ότι οι μαθητές βελτιώθηκαν σε μεγαλύτερο βαθμό στις παράγωγες λέξεις, όπως ‘risk-risky’ και σε μικρότερο βαθμό στις σύνθετες, όπως ‘ sunlight’
Strong Field Approximation for Systems with Coulomb Interaction
Creators: name: Popruzhenko, S. V.
name: Bauer, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A theory describing above-threshold ionization of atoms and ions in a strong electromagnetic field is presented. It is based on the widely known strong field approximation and incorporates the Coulomb interaction between the photoelectron and the nucleus using the method of complex classical trajectories. A central result of the theory is the Coulomb-corrected ionization amplitude whose evaluation requires little extra numerical effort. By comparing our predictions with the results of ab initio numerical solutions for two examples we show that the new theory provides a significant improvement of the Coulomb-free strong field approximation. For the case of above-threshold ionization in elliptically polarized fields a comparison with available experimental data is also presented.
description: submitted to Journal of Modern Optics (Heraeus Seminar "Novel Light Sources and Applications", February 3-9, 2008, Obergurgl, Austria)
Η προς το θείον ομοίωσις στην ορθόδοξη πνευματικότητα
Creators: name: Καρανάσιου, Βικτωρία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Ετερονομία
Αυτονομία
Ταπείνωση
heteronomy
autonomy
humiliation

description: Σκοπός της διατριβής ήταν η μελέτη των δερμάτινων χιτώνων, που, όπως ερμηνεύουν οι Πατέρες, εκφράζουν τη νεκρότητα την οποία περιβλήθηκε ως δεύτερη φύση του ο άνθρωπος Η ζωή του ανθρώπου μετατράπηκε σε επιβίωση, δεν ζει, απλά αναβάλλει τον θάνατο. Ως τώρα ο θάνατος είναι συνέπεια της αμαρτίας. Στους δερμάτινους χιτώνες πρόκειται για τον βιολογικό θάνατο, ο οποίος αποτελεί «θανάτου απαλλαγήν». Δηλαδή ο βιολογικός θάνατος παίρνει ένα θετικό περιεχόμενο, διότι σταματάει την εξάπλωση του κακού. Έτσι τίθεται ένα όριο στην συνεχή ροή της φθοράς και της αλλοίωσης που έφερε η αμαρτία. Με τη διδασκαλία για τους δερμάτινους χιτώνες γίνονται κατανοητοί οι φραγμοί της ελευθερίας του ανθρώπου μετά την πτώση. Καταδεικνύεται επίσης και ο βαθμός ελευθερίας, στον οποίο μπορεί να φτάσει ο άνθρωπος από μόνος του στα όρια της εκπεσμένης του κατάστασης. Με τον τρόπο αυτό, φανερώνεται η ανάγκη θεραπείας της ανθρώπινης φύσης
description: The purpose of this thesis was the study of leather jackets, which, as the Fathers interpret, express the death that was perceived as a second nature of man. Human life was transformed into survival; Until now death is a consequence of sin. Leather jackets are about biological death, which is "death free". That is, biological death gets a positive content because it stops the spread of evil. This puts a limit on the constant flow of deterioration and corruption brought about by sin. The teaching of leather jackets makes it clear to us the barriers to human freedom after the fall. It also demonstrates the degree of freedom a person can achieve on his / her own accord. In this way, the need to heal human nature is revealed
More Than Art, Less Than Work: The Paradoxes of Citizenship and Art Making in Community Mental Health
Creators: name: Damiano, Natasha
name: Backman, Catherine L.
Publisher: name: BC Studies: The British Columbian Quarterly
Year: 2019

description: Abstract Established in 1992 as an extension of a community mental health team in British Columbia, the Art Studios is an arts-based, psychosocial recovery program in Vancouver for people living with mental illness. Participants in our mixed-method program evaluation describe how the program fostered a sense of belonging that enabled them to overcome isolation, achieve meaningful recovery goals, and engage in other life activities, of which the desire to “give back” to the Art Studios was significant. In this article we revisit the ethnographic data to analyze the program’s role in successfully promoting social citizenship, a core value of the recovery paradigm that is evident at the Art Studios. A clear example of social citizenship may be seen in how some members bravely resisted threats to close the program and,[1]subsequently, attempted to keep the community and the program together in some way. In resisting closure, members sustain the sense of belonging (“community”), self-determination, and contribution that are among the essential markers of social citizenship (and psychosocial recovery). Paradoxically, the program’s art-based occupational therapy approach may render these markers of citizenship less visible because making art is generally viewed as a pleasant diversion rather than as a profitable income-generating employment path. Yet, by demonstrating to themselves and others that they “give back” to their communities as social contributors, members simultaneously speak back – letting decision makers in community mental health know what the program (and social citizenship) means to recovery, and take action –demonstrating recovery through solidarity as social (and relational) citizens. [1] At the Art Studios, active “clients” are called “members.” Former members are called “alumni.”
description: BC Studies: The British Columbian Quarterly, No 202 (2019): Arts, Crafts, and Healing: Understanding Social Citizenship in British Columbia
Ballart Fernández, Pere; Julià Garriga, Jordi (eds.) (2013). Que van a dar en la mar: Antología poética mediterránea. Barcelona: Servei de Publicacions de la Universitat Autònoma de Barcelona, pp. 332
Creators: name: Bou, Enric
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2015

description:

description: Rassegna iberistica
A Visual Analysis Approach to Update Systematic Reviews
Creators: name: Felizardo, Katia Romero
name: Nakagawa, Elisa Yumi
name: MacDonell, Stephen G.
name: Maldonado, José Carlos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: In order to preserve the value of Systematic Reviews (SRs), they should be frequently updated considering new evidence that has been produced since the completion of the previous version of the reviews. However, the update of an SR is a time consuming, manual task. Thus, many SRs have not been updated as they should be and, therefore, they are currently outdated. Objective: The main contribution of this paper is to support the update of SRs. Method: We propose USR-VTM, an approach based on Visual Text Mining (VTM) techniques, to support selection of new evidence in the form of primary studies. We then present a tool, named Revis, which supports our approach. Finally, we evaluate our approach through a comparison of outcomes achieved using USR-VTM versus the traditional (manual) approach. Results: Our results show that USR-VTM increases the number of studies correctly included compared to the traditional approach. Conclusions: USR-VTM effectively supports the update of SRs.
description: Conference, 10 pages, 6 figures, 1 table
Inhomogeneous superconductivity and the "pseudogap state of novel superconductors
Creators: name: Kresin, Vladimir
name: Ovchinikov, Yurii N.
name: Wolf, Stuart A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Novel superconducting compounds such as the high Tc oxides are intrinsically inhomogeneous systems. An inhomogeneous structure is created by doping and the statistical nature of the distribution of dopants. Consequently, the critical temperature is spatially dependent: Tc = Tc (r).
description: 63 pages text, 13 figures and 1 table
Intergenerational Dance in Long-Term Residential Care: Social Citizenship in Dementia Care
Creators: name: Canning, Shelley Elisabeth
name: Blakeborough, Darren
Publisher: name: BC Studies: The British Columbian Quarterly
Year: 2019

description: To view the accompanying Digital Story, visit: https://bcstudies.com/digital_stories/dance/ Older adults living with dementia in long-term residential care homes present complex care challenges related to their cognitive, communication, and functional losses. Their enduring potential and abilities are often obscured by a focus on their deficits and disabilities. As a result, care staff struggle to ensure their quality of life and well-being. Reductionist views support assumptions that residents living with dementia have limited ability to participate in, and benefit from, meaningful activities and relationships. Negative views and diminished opportunities for engagement effectively strip these residents of their personhood and citizenship. In recent decades a broader view of persons living with dementia has emerged, recognizing their enduring potential for meaningful engagement; and, increasingly the arts have been explored in dementia care programming to support meaningful engagement. Our six-month research study highlights the enduring capacity for inclusion and engagement experienced by residents living with dementia through their participation in an innovative intergenerational dance program in British Columbia’s Lower Mainland. Imagine Dance blends elements of dance movement therapy with intergenerational programming, partnering school-aged children with residents living in long-term residential care homes in ballet classes. Through partnering with the children and working towards shared goals in weekly dance classes, the residents in our study formed relationships and found community. Our findings support the potential that arts-based programming holds for providing meaningful engagement and promoting social citizenship for people living with dementia in long-term residential care.
description: BC Studies: The British Columbian Quarterly, No 202 (2019): Arts, Crafts, and Healing: Understanding Social Citizenship in British Columbia
Upper edge of the neutron star crust : the drip point and around
Creators: name: Baldo, M.
name: Saperstein, E. E.
name: Tokollonikov, S. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A semi-microscopic self-consistent quantum approach developed recently to describe the inner crust structure of neutron stars within the Wigner-Seitz method with the explicit inclusion of neutron and proton pairing correlations is used for finding the neutron drip point which separates the outer and inner crusts. The equilibrium configurations of the crust are examined in vicinity of the drip point and in the upper part of the inner crust, for the density region corresponding to average Fermi momenta $k_{\rm F}{=}0.2 ÷0.5 $fm$^{-1}$.
description: 22 pages, 6 figures
Quadrupole Orders on the fcc Lattice
Creators: name: Tsunetsugu, Hirokazu
name: Ishitobi, Takayuki
name: Hattori, Kazumasa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We theoretically study electric quadrupole orders in f-electron systems on the fcc lattice. Qudrupole degrees of freedom $O_{20}$ and $O_{22}$ originate in the non-Kramers doublet ground state $Γ_3$ of ion with $f^2$ electron configuration. For discussing quadrupole orders, we use a minimal model with isotropic ($J$) and anisotropic ($K$) nearest-neighbor interactions, and determine the phase diagram using a four-site mean-field approximation at zero and finite temperatures. Quadrupoles couple the $Γ_3$ doublet to the singlet excited state $Γ_1$, and its effects on canting antiferro orders are examined in detail. We found that this coupling leads to a rich phase diagram including two- and four-sublattice antiferro phases, and that two phases show a partial order of quadrupoles at finite temperatures.
Towards jet tomography: gamma-hadron correlations
Creators: name: Renk, Thorsten
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Hard pQCD processes taking place in ultrarelativistic heavy-ion collisions are a well-calibrated probe. It is believed that the interaction with the surrounding medium of outgoing partons from a hard vertex is capable of revealing details of the medium. We demonstrate that correlation measurements of hard photon-hadron back-to-back coincidences are a tool suitable to extract such tomographic information. Introducing the concept of averaged evergy loss probability distributions, we first argue that almost no information about details of the medium evolution is reflected in the nuclear suppression factor R_AA. Thus, a wide variety of jet quenching scenarios and geometries are compatible with the measured data. This problem can be overcome by a gamma-hadron correlation measurement. We show that averaged probability distributions for quarks are accessible experimentally and sketch an analysis procedure capable of distinguishing different energy loss scenarios leading to the same nuclear suppression factor.
description: 5 pages, 2 figures, updated references
An investigation of the growth and feeding responses of oligotrich ciliates to food types and concentrations : an approach to assessing the potential of marine planktonic ciliate blooms
Creators: name: Montagnes, David J. S.
Publisher: name: University of British Columbia
Year: 2008

description: Planktonic ciliates consume small phytoplankton and can be important in the transfer of carbon through food webs. This study examined the impact of clonal ciliate populations on short term algal blooms. Numerical and functional responses (growth and grazing rates with varied food concentration)were established for 5 marine planktonic ciliates and were used in a model to examine predator-prey dynamics of ciliates and 8 Am algae. The ciliates Strombidinopsis acuminatum, Strobilidium spiralis, Strobilidium sp., Strombiclium acuminatum, and Strombiclium capitatum were isolated from British Columbian waters and maintained in culture. Ciliates were fed the flagellates Isochrysis galbana, Chroomonas sauna, Rhodomonas lens, and the diatom 7halassiosira pseudonana, individually or in combinations. Numerical responses were obtained by keeping ciliates in semi-continuous culture, measuring growth rates and fitting them to a modified Michaelis-Menten function; this provided both growth and mortality rates. Species specific differences existed in numerical response parameters. Functional responses were measured by observing the uptake of fluorescently labeled C. sauna or 5 it m beads. This was a poor method: when measured grazing rates were compared to those predicted by a bioenergetic formula, the measured rates either over or underestimated predicted rates by several fold. Functional responses were determined using 1) the bioenergetic formula Ingestion =(growth+respiration)/assimilation efficiency, and 2) volume specific respiration rates. Ciliate functional and numerical responses from this and other studies were compared, and 3responses were established. These were used in a model which simulated ciliate-algal population dynamics in a non-steady state, where ciliates and copepods encountered a patch of water with a defined initial algal concentration. The model indicated: 1) ciliates bloom over 10-20 d, when copepods are rare (<1 L4) and algae are initially abundant (>103 mL4); 2) ciliate blooms can provide 40-50% of the carbon available to copepods, but when copepods are abundant and initial algal levels low, ciliates are not an important carbon source; 3) under "typical" conditions (103 algae mL4,1 copepod L4), ciliates are a link to copepods, but primary production is low; 4) bloom dynamics and carbon flow through the food web are dependent on the ciliate species present. In general, ciliates maybe, under transient conditions, important as both links and sinks of carbon, but under "typical" coastal conditions, ciliates are not important components of food webs.
Φυτοχημική μελέτη του αυτοφυούς εδώδιμου είδους της ανατολικής Κρήτης Campanula pelviformis (Campanulaceae)
Creators: name: Λαγογιάννης, Γεώργιος Ιωακείμ
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Καμπανούλα
Κωδονοειδή
Μεγαστιγμάνια
Campanula pelviformis
Campanulaceae
Μegastigmane glucoside

description: Το είδος Campanula pelviformis της οικογένειας Campanulaceae είναι ένα στενά ενδημικό είδος το οποίο φύεται στην περιοχή της Σητείας, στην ανατολική Κρήτη. Στην παρούσα μελέτη το συγκεκριμένο είδος αναλύθηκε φυτοχημικά. Το μεθανολικό εκχύλισμα των υπέργειων τμημάτων του φυτού κλασματοποιήθηκε με εκχύλιση υγρού-υγρού (κατανομές), με σειρά διαλυτών αυξανόμενης πολικότητας: πετρελαϊκό αιθέρα, οξικό αιθυλεστέρα, βουτανόλη-1 και νερό. Περαιτέρω μελετήθηκαν ως προς τη χημική τους σύσταση τα κλάσματα του πετρελαϊκού αιθέρα, του οξικού αιθυλεστέρα και της βουτανόλης. Από την μέχρι τώρα μελέτη απομονώθηκαν: ένα πολυακετυλένιο η λομπετυολίνη (ουσία 1) μια αλκοόλη ο γεντιοβιοσίδης της 1-οκτεν-3-όλης (ουσία 2), τέσσερα φαινολικά παράγωγα εκ των οποίων δύο φαινυλοπροπανοϊκοί γλυκοσίδες, η δεμέθυλο συριγκίνη (ουσία 3) και ο γουαλενοσίδης Α (ουσία 4) και δύο παράγωγα του χλωρογενικού οξέος, ο μεθυλεστέρας του χλωρογενικού οξέος (ουσία 5) και ο βουτυλεστέρας του χλωρογενικού οξέος (ουσία 6), δυο φλαβονοειδή, η νικοτιφλορίνη (ουσία 7) και η ρουτίνη (ουσία 8) και δύο μεγαστιγμάνες, ο κορχοϊονοσίδης Α (ουσία 9) και ο γλυκοσίδης της 6-υδροξυ-4-μεγαστιγμεν-3,9-διόνης (ουσία 10)
description: Campanula pelviformis is a plant species that belongs in the Campanulaceae family. That plant is narrowly endemic, it grows in Sitia, Eastern Crete. In this particular study, Campanula pelviformis was photochemically analysed. The methanolic extract of its aerial parts was fractionated with liquid-liquid extraction (distribution) with four different solvents of increasing polarity: petroleum ether, ethyl acetate, 1-butanol and water. The petroleum ether, ethyl acetate and butanol extracts were further studied for their chemical composition. So far ten secondary metabolites of the plant were isolated: a polyacetylenes: lobetyolin (compound 1), an alcohol: gentiobioside of 1-octen-ol (compound 2), two phenylpropanoids: demethylsyrrigin (compound 3) and wahlenoside A (compound 4), two chlorogenic acid ester, the chlorogenic acid methyl ester (compound 5) an the chlorogenic acid boutyl ester (compound 6), two flavonoids, nicotiflorin (compound 7) and rutin (compound 8), and two megastigmane glucosides, corchoionoside A (compound 9) and glucoside of 6-hydroxy-4-megastigmen-3,6-dione (compound 10)
Pressure-induced excitations in the out-of-plane optical response of the nodal-line semimetal ZrSiS
Creators: name: Ebad-Allah, J.
name: Rojewski, S.
name: Vöst, M.
name: Eickerling, G.
name: Scherer, W.
name: Uykur, E.
name: Sankar, Raman
name: Varrassi, L.
name: Franchini, C.
name: Ahn, K.
name: Kuneš, J.
name: Kuntscher, C. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The anisotropic optical response of the layered, nodal-line semimetal ZrSiS at ambient and high pressure is investigated by frequency-dependent reflectivity measurements for the polarization along and perpendicular to the layers. The highly anisotropic optical conductivity is in very good agreement with results from density functional theory calculations and confirms the anisotropic character of ZrSiS. Whereas the in-plane optical conductivity shows only modest pressure-induced changes, we found strong effects on the out-of-plane optical conductivity spectrum of ZrSiS, with the appearance of two prominent excitations. These pronounced pressure-induced effects can neither be attributed to a structural phase transition according to our single-crystal x-ray diffraction measurements, nor can they be explained by electronic correlation and electron-hole pairing effects, as revealed by theoretical calculations. Our findings are discussed in the context of the recently proposed excitonic insulator phase in ZrSiS.
description: 6 pages, 3 figures, accepted for publication in Phys. Rev. Lett
Additional file 2 of A new risk-assessment tool for venous thromboembolism in advanced lung cancer: a prospective, observational study
Creators: name: Tsubata, Yukari
name: Hotta, Takamasa
name: Hamai, Kosuke
name: Furuya, Naoki
name: Yokoyama, Toshihide
name: Saito, Ryota
name: Nakamura, Atsushi
name: Masuda, Takeshi
name: Hamaguchi, Megumi
name: Kuyama, Shoichi
name: Honda, Ryoichi
name: Senoo, Tadashi
name: Nakanishi, Masamoto
name: Yamasaki, Masahiro
name: Ishikawa, Nobuhisa
name: Fujitaka, Kazunori
name: Kubota, Tetsuya
name: Kobayashi, Kunihiko
name: Isobe, Takeshi
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Hematology

description: Additional file 2. Patient characteristics at the time of lung cancer diagnosis
Additional file 1 of A new risk-assessment tool for venous thromboembolism in advanced lung cancer: a prospective, observational study
Creators: name: Tsubata, Yukari
name: Hotta, Takamasa
name: Hamai, Kosuke
name: Furuya, Naoki
name: Yokoyama, Toshihide
name: Saito, Ryota
name: Nakamura, Atsushi
name: Masuda, Takeshi
name: Hamaguchi, Megumi
name: Kuyama, Shoichi
name: Honda, Ryoichi
name: Senoo, Tadashi
name: Nakanishi, Masamoto
name: Yamasaki, Masahiro
name: Ishikawa, Nobuhisa
name: Fujitaka, Kazunori
name: Kubota, Tetsuya
name: Kobayashi, Kunihiko
name: Isobe, Takeshi
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy
subject: Hematology

description: Additional file 1. Supplemental methods
Does the Milky Way Produce a Nuclear Galactic Wind?
Creators: name: Keeney, Brian A.
name: Danforth, Charles W.
name: Stocke, John T.
name: Penton, Steven V.
name: Shull, J. Michael
name: Sembach, Kenneth R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We detect high-velocity absorbing gas using Hubble Space Telescope and Far Ultraviolet Spectroscopic Explorer medium resolution spectroscopy along two high-latitude AGN sight lines (Mrk 1383 and PKS 2005-489) above and below the Galactic Center (GC). These absorptions are most straightforwardly interpreted as a wind emanating from the GC which does not escape from the Galaxy's gravitational potential. Spectra of four comparison B stars are used to identify and remove foreground velocity components from the absorption-line profiles of O VI, N V, C II, C III, C IV, Si II, Si III, and Si IV. Two high-velocity (HV) absorption components are detected along each AGN sight line, three redshifted and one blueshifted. Assuming that the four HV features trace a large-scale Galactic wind emanating from the GC, the blueshifted absorber is falling toward the GC at a velocity of 250 +/- 20 km/s, which can be explained by "Galactic fountain" material that originated in a bound Galactic wind. The other three absorbers represent outflowing material; the largest derived outflow velocity is +250 +/- 20 km/s, which is only 45% of the velocity necessary for the absorber to escape from its current position in the Galactic gravitational potential. All four HV absorbers are found to reach the same maximum height above the Galactic plane (|z_max| = 12 +/- 1 kpc), implying that they were all ejected from the GC with the same initial velocity. The derived metallicity limits of >10-20% Solar are lower than expected for material recently ejected from the GC unless these absorbers also contain significant amounts of hotter gas in unseen ionization stages.
description: 39 pages, 3 figures, ApJ accepted
Corsi, Daniele (2014). Futurismi in Spagna: Metamorfosi linguistiche dell’avanguardia italiana nel mondo iberico 1909-1928. Prefazione di Maria Grazia Profeti. Introduzione di Stefania Stefanelli. Roma: Aracne, pp. 386
Creators: name: Monti, SIlvia
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2015

description:

description: Rassegna iberistica
Core Mass Estimates in Strong Lensing Galaxy Clusters Using a Single-Halo Lens Model
Creators: name: González, J. D. Remolina
name: Sharon, K.
name: Li, N.
name: Mahler, G.
name: Bleem, L. E.
name: Gladders, M.
name: Niemiec, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The core mass of galaxy clusters is an important probe of structure formation. Here, we evaluate the use of a Single-Halo model (SHM) as an efficient method to estimate the strong lensing cluster core mass, testing it with ray-traced images from the `Outer Rim' simulation. Unlike detailed lens models, the SHM represents the cluster mass distribution with a single halo and can be automatically generated from the measured lensing constraints. We find that the projected core mass estimated with this method, M$_{\rm SHM}$, has a scatter of $8.52\%$ and a bias of $0.90\%$ compared to the "true" mass within the same aperture. Our analysis shows no systematic correlation between the scatter or bias and the lens-source system properties. The bias and scatter can be reduced to $3.26\%$ and $0.34\%$, respectively, by excluding models that fail a visual inspection test. We find that the SHM success depends on the lensing geometry, with single giant arc configurations accounting for most of the failed cases due to their limiting constraining power. When excluding such cases, we measure a scatter and bias of $3.88\%$ and $0.84\%$, respectively. Finally, we find that when the source redshift is unknown, the model-predicted redshifts are overestimated, and the M$_{\rm SHM}$ is underestimated by a few percent, highlighting the importance of securing spectroscopic redshifts of background sources. Our analysis provides a quantitative characterization of M$_{\rm SHM}$, enabling its efficient use as a tool to estimate the strong lensing cluster core masses in the large samples, expected from current and future surveys.
Viestenz, William (2014). By the Grace of God: Francoist Spain and the Sacred Roots of Political Imagination. Toronto: University of Toronto Press, pp. 240
Creators: name: Bou, Enric
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2015

description:

description: Rassegna iberistica
Presupernova evolution and explosion of massive stars with mass loss
Creators: name: Limongi, Marco
name: Chieffi, Alessandro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the main properties of solar metallicity massive stars in the range 11-120 Msun. The influence of the mass loss on the hydrostatic burning stages as well as the final explosion is discussed in some detail. We find that the minimum masses that enter the WNL, WNE and WC stages are 30 Msun, 35 Msun and 40 Msun respectively; the limiting mass between stars exploding as SNII and SNIb/c is between 30 and 35 Msun; the limiting mass between stars forming neutron stars and black holes after the explosion is between 25-30 Msun. We also discuss the properties of the chemical yields integrated over a Salpeter IMF and we find that stars with M>=35 Msun contribute for ~60% to the production of C, N and for ~40% to the production Sc and s-process elements up to Zr, while they do not produce any intermediate mass element because of the large remnant masses
description: 8 pages, 5 figures. invited review talk at the Workshop "The multicoloured landscape of compact objects and their explosive origin", Cefalu' (Sicily), 11-24 June 2006, to be published by AIP
Remote magnon entanglement between two massive ferrimagnetic spheres via cavity optomagnonics
Creators: name: Wu, Wei-Jiang
name: Wang, Yi-Pu
name: Wu, Jin-Ze
name: Li, Jie
name: You, J. Q.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Recent studies show that hybrid quantum systems based on magnonics provide a new and promising platform for generating macroscopic quantum states involving a large number of spins. Here we show how to entangle two magnon modes in two massive yttrium-iron-garnet (YIG) spheres using cavity optomagnonics, where magnons couple to high-quality optical whispering gallery modes supported by the YIG sphere. The spheres can be as large as 1 mm in diameter and each sphere contains more than $10^{18}$ spins. The proposal is based on the asymmetry of the Stokes and anti-Stokes sidebands generated by the magnon-induced Brillouin light scattering in cavity optomagnonics. This allows one to utilize the Stokes and anti-Stokes scattering process, respectively, for generating and verifying the entanglement. Our work indicates that cavity optomagnonics could be a promising system for preparing macroscopic quantum states.
Resonances for a Hydrogenic System or a Harmonic Oscillator Strongly Coupled to a Field
Creators: name: Billionnet, Claude
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate resonances which are formed by a particle in a potential which is either Coulombian or quadratic when the particle is strongly coupled to a massless boson, taking only two energy levels into consideration. From these calculations we derive how the moving away of the particle from its attraction center goes together with the energy lowering of hybrid states that this particle forms with the field. We study the width of these states and we show that stable states may also appear in the coupling.
description: 17 pages, 6 figures
Pozuelo Yvancos, José María (2014). Novela española del siglo XXI. Murcia: Publicaciones de la Universidad de Murcia, pp. 417
Creators: name: Fernández Prieto, Celia
Publisher: name: Università Ca’ Foscari Venezia, Italia
Year: 2015

description:

description: Rassegna iberistica