cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Understanding the lifeworlds of three Central American refugees in Vancouver, British Columbia
Creators: name: Hernandez, Patricia
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to understand the meaning of "opportunity" as expressed in the experiences of three recent refugee youth from Central America (Guatemala and El Salvador). The setting of the study was MOSAIC'S Youth Job Corps programme in Vancouver, Canada. This four-month voluntary programme was designed to give immigrant Canadian youth language skills to facilitate their entry into the work force. Data for the study were obtained through a twenty-week field study at the Job Corps site followed by the construction of three case studies based upon a series of interviews. Among the findings of the study were the following: the three refugees used a notion of opportunity as the overriding theme in defining their situation in Canada. This theme contained two aspects. First, the "what" of opportunity was future-oriented and contained a social dimension of "wanting to become someone," a material dimension concerned with "wanting to have things," and a familial dimension of "wanting to maintain the family unit." Second, the "how" of opportunity referred to the way the three refugees defined opportunity in terms of their past experiences, their initial difficulties since coming to Canada, the support networks available to them in Canada, their perception of the lives of other immigrants, and finally, the age factor. There was a strong awareness among the refugees studied that their attainment of personal goals (the "what" of opportunity) was dependent on acquiring fluency in the English language and in their finding secure employment with career mobility. The study also found that many of the refugees' future aspirations were related to their own past experiences in their countries of origin.
Additional file 2: of Hippocampal CA1 Î˛CaMKII mediates neuroinflammatory responses via COX-2/PGE2 signaling pathways in depression
Creators: name: Song, Qiqi
name: Fan, Cuiqin
name: Wang, Peng
name: Li, Ye
name: Yang, Mu
name: Yu, Shu
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Table S1. PCR primers used in this study. (DOCX 17 kb)
Contrasting solar and reactor neutrinos with a non-zero value of theta13
Creators: name: Balantekin, A. B.
name: Yilmaz, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: When solar neutrino and KamLAND data are analyzed separately one finds that, even though allowed regions of neutrino parameters overlap, the values of $δm^2$ and the mixing angle $θ_{12}$ at the $χ^2$ minima are different. We show that a non-zero, but small value of the angle $θ_{13}$ can account for this behavior. From the joint analysis of solar neutrino and KamLAND data we find the best fit value of $\sin^2 2 θ_{13} = 0.01 ^{-0.01}_{+0.09}$.
description: 6 pages of LATEX, 5 figures
Observation of photoelectron circular dichroism using a nanosecond laser
Creators: name: Kastner, Alexander
name: Ring, Tom
name: Braun, Hendrike
name: Senftleben, Arne
name: Baumert, Thomas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Photoelectron circular dichroism (PECD) is a fascinating phenomenon both from a fundamental science aspect but also due to its emerging role as a highly sensitive analytic tool for chiral recognition in the gas phase. PECD has been studied with single-photon as well as multi-photon ionization. The latter has been investigated in the short pulse limit with femtosecond laser pulses, where ionization can be thought of as an instantaneous process. In this contribution, we demonstrate that multiphoton PECD still can be observed when using an ultra-violet nanosecond pulse to ionize chiral showcase fenchone molecules. Compared to femtosecond ionization, the magnitude of PECD is similar, but the lifetime of intermediate molecular states imprints itself in the photoelectron spectra. Being able to use an industrial nanosecond laser to investigate PECD furthermore reduces the technical requirements to apply PECD in analytical chemistry.
Entanglement conditions for tripartite systems via indeterminacy relations
Creators: name: Song, Lijun
name: Wang, Xiaoguang
name: Yan, Dong
name: Pu, Zhong-Sheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Based on the S-R indeterminacy relations in conjugation with the partial transposition, we derive a class of inequalities for detecting entanglement in several tripartite systems, including bosonic, SU(2), and SU(1,1) systems. These inequalities are in general stronger than those based on the usual Heisenberg relations for detecting entanglement. We also discuss the reduction from SU(2) and SU(1,1) to bosonic systems and the generalization to multipartite case.
description: 6 pages
Additional file 1 of Supportive supervision from a roving nurse mentor in a community health worker programme: a process evaluation in South Africa
Creators: name: Malatji, Hlologelo
name: Griffiths, Frances
name: Goudge, Jane
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology

description: Additional file 1. Interview guide for community health workers.
The effect of a cultural program in the visual arts on students' ethnic attitudes
Creators: name: Cipywnyk, Raissa Sonia
Publisher: name: University of British Columbia
Year: 2010

description: The purpose, of this research study was to attempt to discover if a unit of study on aspects of the visual arts of the people of India and Indo-Canadians could result in positive attitude change toward this target group. The basic premise upon which the program was developed was that improved ethnic attitudes could be generated by focussing on similarities in beliefs and practices among the cultures of India, Indo-Canadians, and mainstream Canadians as reflected in their aesthetic products. The research design used was a nonequivalent control group design. Three intact sixth grade classes in a large suburban school district comprised the sample. Two classes participated in the program while the third class was used as a control group. All three groups were pre- and posttested on measures indicating their attitudes towards Indo-Canadians. A Semantic Differential Measure and a Bogardus Social Distance Scale were the major instruments. This experimental design was complemented by the observation of the two treatment groups throughout the implementation period. The results of the posttest indicate that a significant positive change in students' attitudes took place as a result of the treatment. The exploration of cultures and cross-cultural similarities in beliefs and practices through the visual arts would therefore appear to be a promising means of improving attitudes towards ethnic groups.
Phylogenetic analysis of F3'5'H and DFRs of Lysimachia arvensis.
Creators: name: Sánchez-Cabrera, Mercedes
name: Jiménez-López, Francisco Javier
name: Narbona, Eduardo
name: Arista, Montserrat
name: Ortiz, Pedro L.
name: Romero-Campero, Francisco J.
name: Ramanauskas, Karolis
name: Igić, Boris
name: Fuller, Amelia A.
name: Whittall, Justen B.
Publisher: name: figshare
Year: 2021
Subjects: subject: Plant Biology
subject: FOS: Biological sciences

description: Maximum likelihood phylogenetic analysis of F3'5'H and DFRs coding sequences for 16 Lysimachia arvensis samples (L1–12 = orange petals; L13–24 = blue petals). We included the top BLASTn hits for reference (scientific name followed byfollowed by Genbank Accession numbers).
Additional file 2 of Supportive supervision from a roving nurse mentor in a community health worker programme: a process evaluation in South Africa
Creators: name: Malatji, Hlologelo
name: Griffiths, Frances
name: Goudge, Jane
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology

description: Additional file 2. Interview guide for outreach team leaders.
Unexpected relaxation dynamics of a self-avoiding polymer in cylindrical confinement
Creators: name: Arnold, A.
name: Bozorgui, B.
name: Frenkel, D.
name: Ha, B. -Y.
name: Jun, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report extensive simulations of the relaxation dynamics of a self-avoiding polymer confined inside a cylindrical pore. In particular, we concentrate on examining how confinement influences the scaling behavior of the global relaxation time of the chain, t, with the chain length N and pore diameter D. An earlier scaling analysis based on the de Gennes blob picture led to t ~ N^2D^(1/3). Our numerical effort that combines molecular dynamics and Monte Carlo simulations, however, consistently produces different t-results for N up to 2000. We argue that the previous scaling prediction is only asymptotically valid in the limit N >> D^(5/3) >> 1, which is currently inaccessible to computer simulations and, more interestingly, is also difficult to reach in experiments. Our results are thus relevant for the interpretation of recent experiments with DNA in nano- and micro-channels.
description: 10 pages, 11 figures
Dirac charge dynamics in graphene by infrared spectroscopy
Creators: name: Li, Z. Q.
name: Henriksen, E. A.
name: Jiang, Z.
name: Hao, Z.
name: Martin, M. C.
name: Kim, P.
name: Stormer, H. L.
name: Basov, D. N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A remarkable manifestation of the quantum character of electrons in matter is offered by graphene, a single atomic layer of graphite. Unlike conventional solids where electrons are described with the Schrodinger equation, electronic excitations in graphene are governed by the Dirac Hamiltonian. Some of the intriguing electronic properties of graphene, such as massless Dirac quasiparticles with linear energy-momentum dispersion, have been confirmed by recent observations. Here we report an infrared (IR) spectromicroscopy study of charge dynamics in graphene integrated in gated devices. Our measurements verify the expected characteristics of graphene and, owing to the previously unattainable accuracy of IR experiments, also uncover significant departures of the quasiparticle dynamics from predictions made for Dirac fermions in idealized, free standing graphene. Several observations, including a marked deviation of the energy bands from the simple linear dispersion, point to the relevance of many body interactions to the rather exotic electromagnetic response in graphene.
description: New references are added. This is the submitted version. The published version is modified
The (in)visible artists: contemporary artists from Croatia in the post-1989 “globalized” contemporary art field
Creators: name: Puc, Tihana
Publisher: name: IMT Alti Studi Lucca
Year: 2014
Subjects: NX Arts in general

description: The object of this research is the integration of contemporary artists from Croatia into the post-1989 “globalized” contemporary
art field. The study aims at understanding and explaining how the correlation between the internal developments in Croatia, after the dissolution of Yugoslavia
in 1991, and the external modifications of the contemporary art field, after the fall of the Berlin Wall in 1989, impacted the international embeddedness of
contemporary artists from Croatia. In contrast to most of the previous empirical studies on the globalization of contemporary art, which focused on Western Europe
and the United states, and on the top-level segment of the contemporary art field, this study expands the empirical examination to include a non-Western European
zone and bring in an off-central perspective, while juxtaposing the occurrences within the top-level segment with those below that level. The research employs
a mix-method approach. The exhibition data (6400 exhibition participations) for a representative sample of 61 artists is studied applying both the methods of
close and distant reading and both for artists’ collective movement and their individual trajectories. It is complemented by semi-structured interviews with
artists and secondary sources.The said processes are examined over a twenty-year period (1991-2012). The research, first of the kind for Croatian context,
provides a comprehensive insight into the post-1989 “international movement” of its contemporary artists, within the context of the globalization of contemporary art,
and brings new knowledge on the construction of international “careers” of non-Western European contemporary artists, while having very concrete implications for
Croatian institutionaland culturalpolicy strategists.
Il segno dell'architettura nell'opera di Karl Friedrich Schinkel
Creators: name: Lepore, Maria
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: La ricerca in questione, attraverso uno studio dell’opera completa di Karl Friedrich Schinkel, degli elaborati grafici originali e del testo a corredo delle tavole, ma soprattutto attraverso una rilettura grafica dell'architettura costruita con i nuovi strumenti della rappresentazione, intende indagare la purezza e l'astrazione neoclassica come l’autenticità neogotica, da nuovi punti di vista e analizzare il singolare contributo fornito da Schinkel alla storia dell'architettura, mettendo in luce le strette interferenze che la Rappresentazione, intesa nel senso più ampio del termine, ha con la forma dell'architettura che ad essa presiede.
Nonassociative black ellipsoids distorted by R-fluxes and four dimensional thin locally anisotropic accretion disks
Creators: name: Bubuianu, Laurenţiu
name: Vacaru, Sergiu I.
name: Veliev, Elşen Veli
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We construct nonassociative quasi-stationary solutions describing deformations of Schwarzschild black holes, BHs, to ellipsoid configurations, which can be black ellipsoids, BEs, and/or BHs with ellipsoidal accretion disks. Such solutions are defined by generic off-diagonal symmetric metrics and nonsymmetric components of metrics (which are zero on base four dimensional, 4-d, Lorentz manifold spacetimes but nontrivial in respective 8-d total (co) tangent bundles). Distorted nonassociative BH and BE solutions are found for effective real sources with terms proportional to $\hbar κ$ (for respective Planck and string constants). These sources and related effective nontrivial cosmological constants are determined by nonlinear symmetries and deformations of the Ricci tensor by nonholonomic star products encoding R-flux contributions from string theory. To generate various classes of (non) associative / commutative distorted solutions we generalize and apply the anholonomic frame and connection deformation method for constructing exact and parametric solutions in modified gravity and/or general relativity theories. We study properties of locally anisotropic relativistic, optically thick, could and thin accretion disks around nonassociative distorted BHs, or BEs, when the effects due to the rotation are negligible. Such configurations describe angular anisotropic deformations of axially symmetric astrophysical models when the nonassociative distortions are related to the outer parts of the accretion disks.
description: latex2e, 11pt, 35 pages, v2 accepted to EPJC
Additional file 3 of Supportive supervision from a roving nurse mentor in a community health worker programme: a process evaluation in South Africa
Creators: name: Malatji, Hlologelo
name: Griffiths, Frances
name: Goudge, Jane
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology

description: Additional file 3. Observation template for community health worker activities.
Additional file 4 of Supportive supervision from a roving nurse mentor in a community health worker programme: a process evaluation in South Africa
Creators: name: Malatji, Hlologelo
name: Griffiths, Frances
name: Goudge, Jane
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology

description: Additional file 4. Focus group discussion guide for community health workers.
Schwinger boson approach for the dynamical mean-field theory of the Kondo lattice
Creators: name: Han, Rulei
name: Hu, Danqing
name: Wang, Jiangfan
name: Yang, Yi-feng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We apply the dynamical large-$N$ Schwinger boson technique as an impurity solver for the dynamical mean-field theory (DMFT) calculations of the Kondo lattice model. Our approach captures the hybridization physics through the DMFT self-consistency that is missing in the pure Schwinger boson calculations with independent electron baths. The resulting thermodynamic and transport properties are in qualitative agreement with more rigorous calculations and give the correct crossover behavior over a wide temperature range from the local moment regime to the Fermi liquid. Our method may be further extended to combine with the density functional theory for efficient material calculations.
description: 7 pages, 7 figures
Additional file 1 of Prevalence and correlates of suicide attempts in high-risk populations: a cross-sectional study among patients receiving opioid agonist therapy in Norway
Creators: name: Vold, Jørn Henrik
name: Løberg, Else-Marie
name: Aas, Christer F.
name: Steier, Jan Alexander
name: Johansson, Kjell Arne
name: Fadnes, Lars Thore
Publisher: name: figshare
Year: 2022
Subjects: subject: Biotechnology
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Spectral nature of soiling and its impact on multi-junction based concentrator systems
Creators: name: Fernandez, Eduardo F.
name: Chemisana, Daniel
name: Micheli, Leonardo
name: Almonacid, Florencia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Soiling, which consists of dust, dirt and particles accumulated on the surface of conventional or concentrator photovoltaic modules, absorbs, scatters, and reflects part of the incoming sunlight. Therefore, it reduces the amount of energy converted by the semiconductor solar cells. This work focuses on the effect of soiling on the spectral performance of multi-junction (MJ) cells, widely used in concentrator photovoltaic (CPV) applications. Novel indexes, useful to quantify the spectral impact of soiling are introduced, and their meanings are discussed. The results of a one-year experimental investigation conducted in Spain are presented and are used to discuss how soiling impacts each of the subcells of a MJ cell, as well as the cell current-matching. Results show that soiling affects the current balance among the junctions, i.e. the transmittance losses have found to be around 4% higher in the top than in the middle subcell. The spectral nature of soiling has demonstrated to increase the annual spectral losses of around 2%. Ideal conditions for the mitigation of soiling are also discussed and found to be in blue-rich environments, where the higher light intensity at the shorter wavelengths can limit the impact of soiling on the overall production of the CPV system.
description: 22 pages, 12 Figures
Beaming Binaries - a New Observational Category of Photometric Binary Stars
Creators: name: Zucker, Shay
name: Mazeh, Tsevi
name: Alexander, Tal
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The new photometric space-borne survey missions CoRoT and Kepler will be able to detect minute flux variations in binary stars due to relativistic beaming caused by the line-of-sight motion of their components. In all but very short period binaries (P>10d), these variations will dominate over the ellipsoidal and reflection periodic variability. Thus, CoRoT and Kepler will discover a new observational class: photometric beaming binary stars. We examine this new category and the information that the photometric variations can provide. The variations that result from the observatory heliocentric velocity can be used to extract some spectral information even for single stars.
description: 15 pages, 4 figures, accpeted for publication in The Astrophysical Journal
Exploring the influence of maternal social support on the relationship between parenting stress among mother survivors of intimate partner violence and the mental health of their children
Creators: name: Gojer, Sarah Rebecca
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: IPV
Social support
Parenting stress

description: Intimate partner violence (IPV) is a pervasive public health problem that disproportionately affects women and poses an intergenerational burden when it occurs among mothers. Children of mothers who experience IPV are at increased risk for experiencing a variety of mental health problems. Parenting stress mediates the relationship between IPV among mothers and the mental health outcomes of their children. Although social support protects against the harmful effect of IPV on mental health outcomes in mother survivors of IPV, it is less understood whether social support among mothers who experience IPV also has a protective effect on the mental health of their children. The proposed study will use a cross-sectional survey to understand whether maternal social support moderates the relationship between parenting stress in mother survivors of IPV and the mental health outcomes of their children. Hypotheses will be examined using descriptive analyses, bivariate correlations, and regression analyses.
Evidence for Strong Itinerant Spin Fluctuations in the Normal State of CeFeAsO(0.89)F(0.11) Iron-Oxypnictides
Creators: name: Bondino, F.
name: Magnano, E.
name: Malvestuto, M.
name: Parmigiani, F.
name: McGuire, M. A.
name: Sefat, A. S.
name: Sales, B. C.
name: Jin, R.
name: Mandrus, D.
name: Plummer, E. W.
name: Singh, D. J.
name: Mannella, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The electronic structure in the normal state of CeFeAsO0.89F0.11 oxypnictide superconductors has been investigated with x-ray absorption and photoemission spectroscopy. All the data exhibit signatures of Fe d-electron itinerancy. Exchange multiplets appearing in the Fe 3s core level indicate the presence of itinerant spin fluctuations. These findings suggest that the underlying physics and the origin of superconductivity in these materials are likely to be quite different from those of the cuprate high-temperature superconductors. These materials provide opportunities for elucidating the role of magnetic fluctuations in high-temperature superconductivity.
description: Shorter version. Accepted in Phys. Rev. Lett
“La valutazione comparata delle opzioni strutturate:
un applicazione al caso delle Outside barrier options e delle correlation digital options"
Creators: name: Xella, Giuseppe
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2011

description: Le opzioni esotiche, denominate anche opzioni di seconda generazione, sono strumenti finanziari derivati che presentano caratteristiche speciali e comunque diverse da quelle che regolano il funzionamento di un’opzione plain vanilla.
Non è semplice proporre una classificazione delle opzioni esotiche in quanto tali titoli, negoziati sia in modo autonomo sia come parte integrante di prestiti obbligazionari, e più in generale di titoli strutturati, sono presenti sui mercati in una grandissima varietà di forme e la grande dinamicità dei mercati finanziari crea ogni giorno nuovi tipi di opzioni con caratteristiche sempre più articolate e quindi qualsiasi classificazione proposta non si può certo ritenere definitiva.
Tali tipologie di opzioni sono per lo più scambiate in mercati privati e non regolamentati, cioè nei mercati cosiddetti OTC.
Solo in pochi casi, e limitatamente a determinate tipologie di contratti, sono state negoziate opzioni esotiche, ne è un esempio la quotazione di quanto options all’American Stock Exchange.
Le categorie più rappresentative di contratti esotici sono date dalle opzioni packages,  le opzioni binarie o digitali, le opzioni path dependent, le opzioni multiassets.
Nel prosieguo del lavoro sarà svolta un’analisi comparazione tra due opzioni esotiche con payoff simili : l’outside barrier option e la correlation digital option.
Ne saranno evidenziate le caratteristiche comuni e le differenze riscontrabili nell’analisi dei principali coefficienti di sensitività.
La personalità giuridica degli enti ecclesiastici tra forma e sostanza
Creators: name: Balsamo, Fabio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: La tesi prende in considerazione, in prima analisi, le prime corporazioni di cristiani, al fine di evidenziare la titolarità collettiva dei beni in capo ai fedeli. Sarà la successiva affermazione della Chiesa come istituzione a mutare questo rapporto, spezzando il legame tra titolarità collettiva dei beni e fedeli. Congeniale a questo approdo è stata anche l'intuizione di Sinibaldo dè Fieschi,attraverso l'elaborazione del concetto di persona giuridica, elaborazione che rappresenterà uno strumento di grande importanza per la salvaguardia del patrimonio della Chiesa dagli abusi dei chierici. Successivamente si analizzano le varie teoria della persona giuridica dalla prospettiva degli enti ecclesiastici, allo scopo di dimostrare la fondatezza della teoria della realtà. Verrà successivamente affrontato il tema dell'abuso della personali8tà giuridica e delle forme con cui esso avviene con riferimento agli enti ecclesiastici, per poi pervenire ad una proposta di superamento dell'attuale nozione di ente ecclesiastico ed, in particolare, della figura di ente ecclesiastico imprenditore.
Art teacher pre-service education : a survey of the attitudes of Queensland secondary, and tertiary art educators
Creators: name: Garnons-Williams, Victoria
Publisher: name: University of British Columbia
Year: 2010

description: This study compares the views of three groups of art educators - secondary, tertiary pre-service lecturers, and scholars - about the content and structure considered important in art teacher pre-service education. Items of program content and structure, as well as issues in art-teacher preparation were gleaned from the writings of selected scholars and incorporated into a survey questionnaire. The survey was distributed to secondary art educators throughout Queensland and to art pre-service lecturers throughout Australia. An analysis of the results identifies areas and degrees of agreement and difference on items both within and between groups. The study can assist the development of art teacher pre-service programmes that reflect the values of both theoreticians and practitioners of art education.
Prodotti di gruppi nilpotenti e supersolubili
Creators: name: Auletta, Antonio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2013

description: Sono dimostrati alcuni risultati sulla struttura dei gruppi
G = AB = AC = BC
triplamente fattorizzati da sottogruppi localmente supersolubili A, B e C.
Relativistic hybrid stars in light of the NICER PSR J0740+6620 radius measurement
Creators: name: Li, Jia Jie
name: Sedrakian, Armen
name: Alford, Mark
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We explore the implications of the recent radius determination of PSR J0740+6620 by the NICER experiment combined with the neutron skin measurement by the PREX-II experiment and the associated inference of the slope of symmetry energy, for the structure of hybrid stars with a strong first-order phase transition from nucleonic to quark matter. We combine a covariant density-functional nucleonic equation of state (EOS) with a constant-speed-of-sound EOS for quark matter. We show that the radius and tidal deformability ranges obtained from GW170817 can be reconciled with the implication of the PREX-II experiment if there is a phase transition to quark matter in the low-mass compact star. In the high-mass segment, the EoS needs to be stiff to comply with the large-radius inference for PSR J0740+6620 and J0030+0451 with masses $M\simeq 2M_{\odot}$ and $M\simeq 1.4M_{\odot}$. We show that twin stars are not excluded, but the mass and radius ranges (with $M \geq M_\odot$) are restricted to narrow domains $ΔM_{\rm twin} \lesssim 0.05 M_\odot$ and $ΔR_{\rm twin} \sim 1.0$~km. We also show that the existence of twin configurations is compatible with the light companion in the GW190814 event being a hybrid star in the case of values of the sound-speed square $s=0.6$ and $s=1/3$.
description: 7 pages and 4 figures; matches published version
Reservoir-assisted symmetry breaking and coalesced zero-energy modes in an open PT-symmetric Su-Schrieffer-Heeger model
Creators: name: Garmon, Savannah
name: Noba, Kenichi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study a model consisting of a central $\mathcal{PT}$-symmetric trimer with non-Hermitian strength parameter $γ$ coupled to two semi-infinite Su-Schrieffer-Heeger (SSH) leads. We show the existence of two zero-energy modes, one of which is localized while the other is anti-localized. For the remaining eigenvalues, we demonstrate two qualitatively distinct types of $\mathcal{PT}$-symmetry breaking. Within a subset of the parameter space corresponding to the topologically non-trivial phase of the SSH chains, a gap opens within the broken $\mathcal{PT}$ regime of the discrete eigenvalue spectrum. For relatively smaller values of $γ$, the eigenvalues are embedded in the two SSH bands and hence become destabilized primarily due to the resonance interaction with the continuum. We refer to this as reservoir-assisted $\mathcal{PT}$-symmetry breaking. As the value of $γ$ is increased, the eigenvalues exit the SSH bands and the discrete eigenstates become more strongly localized in the central trimer region. This approximate decoupling results in the discrete spectrum behaving more like the independent trimer, including both a region in which the $\mathcal{PT}$ symmetry is restored (the gap) and a second region in which it is broken again. At the exceptional point (EP) marking the boundary between the gap and the second $\mathcal{PT}$-broken region, two of the eigenstates coalesce with the localized zero-energy mode, resulting in a third-order exceptional point (EP3). At the other boundaries of the parameter space at which the gap vanishes, similar higher-order EPs can form as pairs of the discrete eigenstates coalesce with either of the two zero-energy states. The EPs of order $N$ formed of the localized zero-energy state give rise to a characteristic $\sim t^{2N-2}$ evolution in the survival probability dynamics, which we propose to measure in a photonic lattice experiment.
description: 20 pages, 14 figures; significantly updated to include zero-energy states and survival probability simulations
Effects of a cultural curriculum in changing children's inter-ethnic attitudes
Creators: name: Neaman, Evelyn
Publisher: name: University of British Columbia
Year: 2010

description: Multicultural education is a nebulous term steeped in cultural assumptions and perhaps political rhetoric. Over time, it has been repeatedly addressed through policy statements and learning materials. In order to move beyond mere rhetoric, the awareness generated from studies and research must be effectively implemented through carefully designed educational programs. Such programs may assume a variety of approaches, however the literature suggests appreciation for cultural diversity is most likely to be achieved through presentation of cultural similarities, insider perspectives, primary materials and cross cultural contact. To this end, Spotlight On Jewish Canadians was designed to foster cross cultural communication and to generate appreciation for living in a multicultural society. The purpose of the study was to evaluate the effectiveness of a curriculum premised on the afore-mentioned principles and to report on its findings. A quasi-experimental research design involving four teachers and ninety-six students was developed and implemented. Four methods were used to collect data. Two pencil and paper tests, classroom observations and teacher evaluations were analyzed to see what effect, if any, the unit had on the students involved. The results of the pencil and paper tests indicated that there was as a significant increase in students pride in heritage as a result of the unit, but no significant increase in students preference for to social diversity was evident. It should be noted that the unit focussed on Jewish Canadians but the measure assessed acceptance of social diversity in general. However classroom observations and teacher evaluations contradicted the findings of the preference for social diversity measure. In general the teachers found the unit to be helpful in making their students more accepting of social diversity as well as increasing pride towards students own cultures.
MOESM1 of Association between homocysteine level and the risk of diabetic retinopathy: a systematic review and meta-analysis
Creators: name: Lei, Xunwen
name: Zeng, Guifeng
name: Zhang, Yuemei
name: Li, Qiang
name: Zhang, Jinzhi
name: Bai, Zhenggang
name: Yang, Kehu
Publisher: name: figshare
Year: 2018
Subjects: Medicine
Biological Sciences not elsewhere classified
Science Policy

description: Additional file 1. Meta-regression.
Differential Galois Theory and Integration
Creators: name: Dreyfus, Thomas
name: Weil, Jacques-Arthur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34A05, 68W30, 14Q20, 34M03, 34M15, 34M25, 17B45

description: In this paper, we present methods to simplify reducible linear differential systems before solving. Classical integrals appear naturally as solutions of such systems. We will illustrate the methods developed in a previous paper on several examples to reduce the differential system. This will give information on potential algebraic relations between integrals.
M-theory on pp-waves with a holomorphic superpotential and its membrane and matrix descriptions
Creators: name: Kim, Jongwook
name: Kim, Nakwoo
name: Park, Jeong-Hyuck
name: Plefka, Jan
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a new class of inhomogeneous pp-wave solutions with 8 unbroken supersymmetries in D=11 supergravity. The 9 dimensional transverse space is Euclidean and split into 3 and 6 dimensional subspaces. The solutions have non-constant gauge flux, which are described in terms of an arbitrary holomorphic function of the complexified 6 dimensional space. The supermembrane and matrix theory descriptions are also provided and we identify the relevant supersymmetry transformation rules. The action also arises through a dimensional reduction of N=1, D=4 supersymmetric Yang-Mills theory coupled to 3 gauge adjoint and chiral multiplets, whose interactions are determined by the holomorphic function of the supergravity solution now constituting the superpotential.
description: 19 pages;v2 21p, added discussion and refs
Imaging Seebeck drift of excitons and trions in MoSe2 monolayers
Creators: name: Park, Sangjun
name: Han, Bo
name: Boule, Caroline
name: Paget, Daniel
name: Rowe, Alistair
name: Sirotti, Fausto
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Robert, Cedric
name: Lombez, Laurent
name: Urbaszek, Bernhard
name: Marie, Xavier
name: Cadiz, Fabian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hyperspectral imaging at cryogenic temperatures is used to investigate exciton and trion propagation in MoSe$_2$ monolayers encapsulated with hexagonal boron nitride (hBN). Under a tightly focused, continuous-wave laser excitation, the spatial distribution of neutral excitons and charged trions strongly differ at high excitation densities. Remarkably, in this regime the trion distribution develops a halo shape, similar to that previously observed in WS2 monolayers at room temperature and under pulsed excitation. In contrast, the exciton distribution only presents a moderate broadening without the appereance of a halo. Spatially and spectrally resolved luminescence spectra reveal the buildup of a significant temperature gradient at high excitation power, that is attributed to the energy relaxation of photoinduced hot carriers. We show, via a numerical resolution of the transport equations for excitons and trions, that the halo can be interpreted as thermal drift of trions due to a Seebeck term in the particle current. The model shows that the difference between trion and exciton profiles is simply understood in terms of the very different lifetimes of these two quasiparticles.
A 500 MS/s waveform digitizer for PandaX dark matter experiments
Creators: name: He, Changda
name: Liu, Jianglai
name: Ren, Xiangxiang
name: Shang, Xiaofeng
name: Wei, Xikai
name: Wang, Mingxin
name: Yang, Jijun
name: Yang, Jinqun
name: Yang, Yong
name: Zhang, Guangping
name: Zheng, Qibin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Waveform digitizers are key readout instruments in particle physics experiments. In this paper, we present a waveform digitizer for the PandaX dark matter experiments. It supports both external-trigger readout and triggerless readout, accommodating the needs of low rate full-waveform readout and channel-independent low threshold acquisition, respectively. This digitizer is a 8-channel VME board with a sampling rate of 500 MS/s and 14-bit resolution for each channel. A digitizer system consisting of 72 channels has been tested in situ of the PandaX-4T experiment. We report the system performance with real data.
description: accepted version by JINST
Power series with inverse binomial coefficients and harmonic numbers
Creators: name: Boyadzhiev, Khristo N.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We construct the generating function for products of inverse central binomial coefficients with harmonic numbers.
description: 9 pages
Evolution of the Frequency of Luminous (\geq L_V*) Close Galaxy Pairs at z < 1.2 in the COSMOS Field
Creators: name: Kartaltepe, J. S.
name: Sanders, D. B.
name: Scoville, N. Z.
name: Calzetti, D.
name: Capak, P.
name: Koekemoer, A.
name: Mobasher, B.
name: Murayama, T.
name: Salvato, M.
name: Sasaki, S. S.
name: Taniguchi, Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We measure the fraction of luminous galaxies in pairs at projected separations of 5-20 kpc out to z=1.2 in the COSMOS field using ACS images and photometric redshifts derived from an extensive multiwavelength dataset. Analysis of a complete sample of 106,188 galaxies more luminous than M_V=-19.8 (~ L_V*) in the redshift range 0.1 < z < 1.2 yields 1,749 galaxy pairs. These data are supplemented by a local z=0-0.1 value for the galaxy pair fraction derived from the Sloan Digital Sky Survey (SDSS). After statistically correcting the COSMOS pair sample for chance line-of-sight superpositions, the evolution in the pair fraction is fit by a power law \propto (1+z)^{n=3.1 \pm 0.1}. If this strongly evolving pair fraction continues out to higher redshift, ~ 50% of all luminous galaxies at z ~ 2 are in close pairs. This clearly signifies that galaxy mergers are a very significant and possibly dominant mechanism for galaxy evolution during the epoch of galaxy formation at z=1 to 3.
description: 22 pages including 4 figures and 2 tables. Accepted for publication in the ApJS COSMOS special issue. For the high resolution version of figure 4, see: http://www.ifa.hawaii.edu/~jeyhan/pairs/
$π$ and Arc-Length
Creators: name: Nathan, Joseph Amal
Publisher: name: arXiv
Year: 2021
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics
subject: 03F60, 26E40, 28A75, 40A05

description: We use the classical definitions (i) $π$ is the ratio of area to the square of the radius of a circle; (ii) $π$ is the ratio of circumference to the diameter of a circle, to prove $π$'s existence within the purview of Euclidean geometry. Next we show that the "arc-length" (Definition 1) is deducible from Euclidean geometry. Then we prove the Non-Euclidean-Axioms(NEA) of Archimedes (Corollary 4 and 5) and that the arc-length integral converges to the arc-length. We justify why `Euclidean Metric' (Definition 5) is a correct metric for arc-length; derive expressions for area, circumference of a circle and finally prove the equivalence of definitions (i) and (ii).
description: 10 pages with 5figures
Distribution of the time at which the deviation of a Brownian motion is maximum before its first-passage time
Creators: name: Randon-Furling, Julien
name: Majumdar, Satya N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We calculate analytically the probability density $P(t_m)$ of the time $t_m$ at which a continuous-time Brownian motion (with and without drift) attains its maximum before passing through the origin for the first time. We also compute the joint probability density $P(M,t_m)$ of the maximum $M$ and $t_m$. In the driftless case, we find that $P(t_m)$ has power-law tails: $P(t_m)\sim t_m^{-3/2}$ for large $t_m$ and $P(t_m)\sim t_m^{-1/2}$ for small $t_m$. In presence of a drift towards the origin, $P(t_m)$ decays exponentially for large $t_m$. The results from numerical simulations are in excellent agreement with our analytical predictions.
description: 13 pages, 5 figures. Published in Journal of Statistical Mechanics: Theory and Experiment (J. Stat. Mech. (2007) P10008, doi:10.1088/1742-5468/2007/10/P10008)
Zinc(II) and manganese(II) complexes with 1,3-bis(1-allylbenzimidazol-2-yl)-2-oxapropane: synthesis, crystal structures, antioxidant activities and DNA-binding properties
Creators: name: Wu, Yancong
name: Xia, Lixian
name: Zhang, Geng
name: Wu, Huilu
name: Qu, Yao
name: Zhao, Kun
name: Wang, Cong
Publisher: name: Taylor & Francis
Year: 2020
Subjects: Biophysics
Biochemistry
Physical Sciences not elsewhere classified
Medicine
Cell Biology
Molecular Biology
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified

description: Two new zinc(II) and manganese(II) complexes with the ligand 1,3-bis(1-allylbenzimidazol-2-yl)-2-oxopropane (aobb), with composition [Zn(aobb)2](pic)2·DMF·CH3OH (1) and [Mn(aobb)(DMF)2(H2O)] (pic)2 (2) (pic = picrate; DMF = N,N-dimethylformamide), have been synthesized and characterized by elemental analysis, electrical conductivities, X-ray single-crystal diffraction, IR, and UV–vis spectra. Single-crystal X-ray revealed that Zn(II) and Mn(II) centers are both located in the six-coordinate distorted octahedral geometry. The DNA-binding modes of the ligand and the complexes were investigated by electronic absorption titration, competitive binding with ethidium bromide and viscosity measurements. The experimental evidence indicated the ligand and complexes interact with calf thymus DNA through intercalation. The binding strength follows the order 2 > 1 > aobb. Additionally, 2 displays potential superoxide dismutase activity in vitro studies.
Relations between experiential learning and youth treatment outcomes in community mental health
Creators: name: McBride, Megan J.
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Psychotherapy
Evidence-based treatments
Children and adolescents
Community mental health

description: Despite numerous studies showing that treatments for youth mental health disorders are beneficial, there is a dearth of research concerning how treatments work. Treatment process research is needed to improve the understanding of which components of treatments are most potent, to boost the effectiveness of therapy. Experiential learning, usually a direct exposure to a tangible experience or activity, is theorized to allow individuals to accommodate new information and/or enhance understanding via concrete experiences. Using a therapy process approach, the proposed study will test whether experiential learning (operationalized as modeling, role-play, and in-vivo activities) is associated with youth treatment outcomes rated by both youth and parents. Therapy sessions will be coded at the microlevel, assessing the presence of experiential learning processes throughout episodes of care for youth and caregivers receiving cognitive behavioral therapy in community mental health. Associations will be analyzed using linear regression analyses.
Dearth of dark matter or massive dark halo? Mass-shape-anisotropy degeneracies revealed by NMAGIC dynamical models of the elliptical galaxy NGC 3379
Creators: name: De Lorenzi, F.
name: Gerhard, O.
name: Coccato, L.
name: Arnaboldi, M.
name: Capaccioli, M.
name: Douglas, N. G.
name: Freeman, K. C.
name: Kuijken, K.
name: Merrifield, M. R.
name: Napolitano, N. R.
name: Noordermeer, E.
name: Romanowsky, A. J.
name: Debattista, V. P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent results from the Planetary Nebula Spectrograph (PN.S) survey have revealed a rapidly falling velocity dispersion profile in the nearby elliptical galaxy NGC 3379, casting doubts on whether this intermediate-luminosity galaxy has the kind of dark matter halo expected in LambdaCDM cosmology. We present a detailed dynamical study of this galaxy, combining long-slit spectroscopy, SAURON integral-field data, and PN.S velocities, reaching to more than seven effective radii (R_e). We construct spherical and axisymmetric dynamical models for these data with the flexible made-to-measure NMAGIC code, in a sequence of gravitational potentials with varying dark halo mass. We find that the data are consistent both with near-isotropic spherical systems dominated by the stellar mass, and with models in massive halos with strongly radially anisotropic outer parts (beta >~ 0.8 at 7R_e). Formal likelihood limits would exclude (at 1 sigma) the model with stars only, as well as halo models with v_circ(7R_e) >~ 250 km/s. A sequence of more realistic axisymmetric models of different inclinations and a small number of triaxial tests confirm the spherical results. All valid models fitting all the data are dynamically stable over Gyrs, including the most anisotropic ones. NGC 3379 may well have a dark matter halo as predicted by recent merger models within LambdaCDM cosmology, provided its outer envelope is strongly radially anisotropic. (abridged)
description: 22 pages, 25 figures, revised version for MNRAS