cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
After-care problems of the discharged mental hospital patient : a trend report on recent literature and its implications for practice.
Creators: name: Orno, Anne Marie Ellen Harriet Birgitta Inger
Publisher: name: University of British Columbia
Year: 2011

description: This study takes the form of a critical review of recent research on the problems of the discharged mental hospital patient. Its principal objectives may be stated as follows: (1) to delineate the difficulties faced by the ex-patient in his attempts to re-adjust to life in the open community and maintain a satisfactory level of mental health; (2) to summarize the main trends in recent social and medical research on the nature and source of these difficulties, and to specify their implications for the tasks of community mental health planning; and (3) to examine the question of the proper role of social workers in the context of research and practice alike, in this field of mental health services. A study of this kind acquires especial timeliness from the fact that the number of mental hospital patients discharged to the community in recent years, who would formerly have required long-term or permanent hospitalization, has been increasing in an unprecedented way. This development is attributed primarily to the rapid growth in the use of chemo-therapeutic techniques. The main findings of the study are, first, that - although there is ample scope for their skilled and specialized participation - social workers have so far played little part, and taken little initiative, in the developments under review; and, secondly, that the many changes now taking place in the treatment of mental illness (particularly on an out-patient basis) will require extensive and radical modifications in the training, the therapeutic orientations and the role relations of the mental health professions.
Spin-dependent interactions in quarkonia
Creators: name: Badalian, A. M.
name: Nefediev, A. V.
name: Simonov, Yu. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The spin-dependent interactions in mesons are considered in detail in the framework of the Field Correlator Method. Analytic expressions for the spin-dependent potentials in heavy and light quarkonia are derived with the QCD string moment of inertia taken into account. Recent lattice data are analysed using these formulae and the data are shown to be consistent with very small values of the gluonic correlation length, <0.1 fm. The Field Correlator and the Eichten-Feinberg definitions of the spin-dependent potentials in the lowest, Gaussian approximation for the QCD vacuum are compared to one another and the two approaches are shown to be equivalent in the limit of a vanishing vacuum correlation length, whereas for finite values of the latter the difference between these two approaches can be explained by the contribution of the higher-order field corelators, starting from the quartic one.
description: RevTeX4, 37 pages, to appear in Phys.Rev.D
Analysis of Productivity of Green gram and Cowpea in Sri Lanka (1).docx
Creators: name: Marasinghe, Irosha
Publisher: name: figshare
Year: 2021
Subjects: subject: 140201 Agricultural Economics
subject: FOS: Economics and business

description: The overall objective of the study was to evaluate the changes happened in the productivity of green gram and cowpea over the past years from 2000 to 2018. Specific objectives of the study were to; · estimate the productivity and annual growth rates of green gram and cowpea over the past 18 years from 2000 to 2018 · evaluate the changing pattern of productivity over the past 18 years
Time-averaging within the excited state of the nitrogen-vacancy centre in diamond
Creators: name: Rogers, L J
name: McMurtrie, R L
name: Armstrong, S
name: Sellars, M J
name: Manson, N B
Publisher: name: arXiv
Year: 2009
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The emission intensity of diamond samples containing nitrogen-vacancy centres are measured as a function of magnetic field along a <111> direction for various temperatures. At low temperatures the responses are sample and stress dependent and can be modeled in terms of the previous understanding of the 3E excited state fine structure which is strain dependent. At room temperature the responses are largely sample and stress independent, and modeling involves invoking a strain independent excited state with a single zero field splitting of 1.42 GHz. The change in behaviour is attributed to a temperature dependent averaging process over the components of the excited state orbital doublet. It decouples orbit and spin and at high temperature the spin levels become independent of any orbit splitting. Thus the models can be reconciled and the parameters for low and high temperatures are shown to be consistent.
description: 16 pages, 10 figures; fonts fixed and reference corrected
Spin-selective reactions of radical pairs act as quantum measurements
Creators: name: Jones, Jonathan A.
name: Hore, Peter J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Since the 1970s, spin-selective reactions of radical pairs have been modelled theoretically by adding phenomenological rate equations to the quantum mechanical equation of motion of the radical pair spin density matrix. Here, using a quantum measurement approach, we derive an alternative set of rate expressions which predict a faster decay of coherent superpositions of the singlet and triplet radical pair states. The difference between the two results, however, is not dramatic and would probably be difficult to distinguish experimentally from decoherence arising from other sources.
description: Chemical Physics Letters, in press. 17 pages including 2 figues; pdf only
Theory of polyzwitterion conformations
Creators: name: Kumar, Rajeev
name: Fredrickson, Glenn H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Conformational characteristics of polyzwitterionic molecules in aqueous solutions are investigated using the variational method. Analytical relations are derived for the radius of gyration of a single polyzwitterionic chain as a function of the chain length, electrostatic interaction strength, added salt concentration, dipole moment and degree of ionization of the zwitterionic monomers. In the absence of the small ions (counterions and coions) near the polyzwitterionic chain, attractive dipole-dipole interactions are shown to induce a collapse of the polyzwitterionic chain. However, in the presence of the small ions, the radius of gyration is shown to be an interplay of the screening of the electrostatic interactions and the counterion adsorption on the zwitterionic sites. In addition to the well-known Debye-Huckel screening of the charge-charge interactions, screening of the charge-dipole and dipole-dipole interactions are found to play important roles in determining the size of the chain. Functional forms for the screened charge-dipole and dipole-dipole interaction potentials are presented. Furthermore, counterion adsorption on the zwitterionic monomers is predicted to be asymmetric depending on the nature of the added salt and the zwitterionic groups. Qualitative remarks regarding the solubility of these molecules in aqueous solutions along with the classical "anti-polyelectrolyte" effect (increase in the solubility in water with the addition of salt) are presented.
description: To be appeared in J. Chem. Phys
On the magnetic field of off-limb spicules
Creators: name: Centeno, R.
name: Bueno, J. Trujillo
name: Ramos, A. Asensio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Determining the magnetic field related to solar spicules is vital for developing adequate models of these plasma jets, which are thought to play a key role in the thermal, dynamic and magnetic structure of the Chromosphere. Here we report on the magnetic properties of off-limb spicules in a very quiet region of the solar atmosphere, as inferred from new spectropolarimetric observations in the He I 10830 A triplet obtained with the Tenerife Infrared Polarimeter. We have used a novel inversion code for Stokes profiles caused by the joint action of atomic level polarization and the Hanle and Zeeman effects (HAZEL) to interpret the observations. Magnetic fields as strong as ~40G were detected in a very localized area of the slit, which could represent a possible lower value of the field strength of organized network spicules.
description: Accepted for publication in ApJ, 24 pages, 5 Figures
A Unified Framework for Photometric Redshifts
Creators: name: Budavari, Tamas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a rigorous mathematical solution to photometric redshift estimation and the more general inversion problem. The challenge we address is to meaningfully constrain unknown properties of astronomical sources based on given observables, usually multicolor photometry, with the help of a training set that provides an empirical relation between the measurements and the desired quantities. We establish a formalism that blurs the boundary between the traditional empirical and template-fitting algorithms, as both are just special cases that are discussed in detail to put them in context. The new approach enables the development of more sophisticated methods that go beyond the classic techniques to combine their advantages. We look at the directions for further improvement in the methodology, and examine the technical aspects of practical implementations. We show how training sets are to be constructed and used consistently for reliable estimation.
description: 9 pages, 2 figures, accepted to the ApJ
Modeling System Safety Requirements Using Input/Output Constraint Meta-Automata
Creators: name: Chen, Zhe
name: Motet, Gilles
Publisher: name: arXiv
Year: 2009
Subjects: subject: Software Engineering (cs.SE)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences
subject: D.2; F.1.1

description: Most recent software related accidents have been system accidents. To validate the absence of system hazards concerning dysfunctional interactions, industrials call for approaches of modeling system safety requirements and interaction constraints among components and with environments (e.g., between humans and machines). This paper proposes a framework based on input/output constraint meta-automata, which restricts system behavior at the meta level. This approach can formally model safe interactions between a system and its environment or among its components. This framework differs from the framework of the traditional model checking. It explicitly separates the tasks of product engineers and safety engineers, and provides a top-down technique for modeling a system with safety constraints, and for automatically composing a safe system that conforms to safety requirements. The contributions of this work include formalizing system safety requirements and a way of automatically ensuring system safety.
description: 6 pages. In Proceedings of the 4th International Conference on Systems (ICONS 2009), Gosier, Guadeloupe, France, pp. 228-233. IEEE Computer Society, 2009
Fractional Iteration of Series and Transseries
Creators: name: Edgar, G. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Rings and Algebras (math.RA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 16W60, 12H05

description: We investigate compositional iteration of fractional order for transseries. For any large positive transseries $T$ of exponentiality 0, there is a family $T^{[s]}$ indexed by real numbers $s$ corresponding to teration of order $s$. It is based on Abel's Equation. We also investigate the question of whether there is a family $T^{[s]}$ all sharing a single support set. A subset of the transseries of exponentiality 0 is divided into three classes ("shallow", "moderate" and "deep") with different properties related to fractional iteration.
description: 17 pages; 1 figure
Feasibility of terahertz lasing in optically pumped epitaxial multiple graphene layer structures
Creators: name: Ryzhii, V.
name: Ryzhii, M.
name: Satou, A.
name: Otsuji, T.
name: Dubinov, A. A.
name: Aleshkin, V. Ya.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A multiple-graphene-layer (MGL) structure with a stack of GLs and a highly conducting bottom GL on SiC substrate pumped by optical radiation is considered as an active region of terahertz (THz) and far infrared (FIR) lasers with external metal mirrors. The dynamic conductivity of the MGL structure is calculated as a function of the signal frequency, the number of GLs, and the optical pumping intensity. The utilization of optically pumped MGL structures might provide the achievement of lasing with the frequencies of about 1 THz at room temperature due to a high efficiency.
description: 7 pages, 7 figures
Unveiling the Origin of GRB 090709A: Lack of Periodicity in a Reddened Cosmological Long-Duration Gamma-Ray Burst
Creators: name: Cenko, S. B.
name: Butler, N. R.
name: Ofek, E. O.
name: Perley, D. A.
name: Morgan, A. N.
name: Frail, D. A.
name: Gorosabel, J.
name: Bloom, J. S.
name: Castro-Tirado, A. J.
name: Cepa, J.
name: Chandra, P. C.
name: Postigo, A. de Ugarte
name: Filippenko, A. V.
name: Klein, C. R.
name: Kulkarni, S. R.
name: Miller, A. A.
name: Nugent, P. E.
name: Starr, D. L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present broadband (gamma-ray, X-ray, near-infrared, optical, and radio) observations of the gamma-ray burst (GRB) 090709A and its afterglow in an effort to ascertain the origin of this high-energy transient. Previous analyses suggested that GRB 090709A exhibited quasi-periodic oscillations with a period of 8.06 s, a trait unknown in long-duration GRBs but typical of flares from soft gamma-ray repeaters. When properly accounting for the underlying shape of the power-density spectrum of GRB 090709A, we find no conclusive (> 3 sigma) evidence for the reported periodicity. In conjunction with the location of the transient (far from the Galactic plane and absent any nearby host galaxy in the local universe) and the evidence for extinction in excess of the Galactic value, we consider a magnetar origin relatively unlikely. A long-duration GRB, however, can account for the majority of the observed properties of this source. GRB 090709A is distinguished from other long-duration GRBs primarily by the large amount of obscuration from its host galaxy (A_K,obs >~ 2 mag).
description: 12 pages; 6 figures; Submitted to AJ; Comments welcome
Resummation in Fractional APT: How many loops do we need to take into account?
Creators: name: Bakulev, Alexander P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We give a short introduction to the Analytic Perturbation Theory (APT) and its generalization to Fractional powers -- FAPT. We describe how to treat heavy-quark thresholds in FAPT and then show how to resum perturbative series in both the one-loop APT and FAPT. As an application we consider FAPT description of the Higgs boson decay $H^0\to b\bar{b}$.
description: 7 pages, 1 figure, talk presented at the International Meeting "Excited QCD", February 8--14, 2009, Zakopane (Poland), misprints corrected
A Novel Dynamic Multi-Layer Secret Sharing Approach for Privacy-Preserving Social Network
Creators: name: Russo, Sara
Publisher: name: Zenodo
Year: 2025
Subjects: Privacy-Preserving
Social Networks
Anonymization
Secret Sharing
Graph Privacy
Dynamic Multi-Layer

description: Maintaining privacy while maintaining a balance between anonymity and data utility is an ongoing challenge in social network data sharing. Traditional anonymisation techniques frequently violate the integrity of data structures or fall short in offering strong defence against changing hostile threats. This paper presents a unique architecture that combines Secret Sharing-Based Graph Anonymisation (SSGA) and Dynamic Layer Rotation (DLR) to address these issues. Our method creates organised unpredictability by utilising cryptographic concepts and chaotic transformations, making de-anonymization computationally challenging while maintaining the analytical usefulness of network architectures. Through empirical testing on popular datasets such as the Facebook Social Graph, Enron Email, and Karate Club datasets, we validate our approach and show that it is scalable and successful in reducing the dangers associated with de-anonymization.
Standards for day care programs : a creative approach to the care fo preschool children outside of the home, based on a review of day care facilities in Greater Vancouver, 1962-1963.
Creators: name: Hughes, Mary Louise
Publisher: name: University of British Columbia
Year: 2011

description: Though a progressive day care philosophy has been developed and is practised in a few communities in the United States and Canada, the day care program generally has occupied a position of secondary importance in the network of community social, services, rather than being recognized as a service which requires professional leadership and substantial financial support. In Greater Vancouver, as in other communities, concern is expressed about the adequacy of present resources to meet the needs of children who require day care. The assumption of this study is that constructive planning must be based on objectives which (a) will assure enriching experiences to the children who require care, and (b) will give to families the opportunity to select the community resource which will support and strengthen the family life. These objectives are enunciated in the dynamic approach to day care services, and have been translated into a method of practice by the Child Welfare League of America in Standards for Day Care Services. The special needs of children which must be met in day care placement are first put in perspective through a review of current literature and discussion of present knowledge about the nature of human growth and development. These needs can be met when the day care program is viewed as a special field of Child Welfare, which requires a multi-disciplinary team approach to ensure that the total needs of the child and family are considered. The core of this study, based on a questionnaire survey, analyzes present practice in eleven day care facilities in the Greater Vancouver area, and compares it with the criteria established as acceptable by the Child Welfare League of America. This analysis is concerned particularly with the contribution of social work to the multi-disciplinary team. The findings indicate that present services do not make adequate provision for the child's welfare, and do not evidence appreciation of the day care program's responsibility to strengthen and enhance family life. The need, for professional leadership, financial support, and community planning to establish "good standards for day care" are supported with suggestions as to how the community might take action to develop a better and more creative day care service.
Surface magnetic field effects in local helioseismology
Creators: name: Schunker, H.
name: Braun, D. C.
name: Cally, P. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using helioseismic holography strong evidence is presented that the phase (or equivalent travel-time) of helioseismic signatures in Dopplergrams within sunspots depend upon the line-of-sight angle in the plane containing the magnetic field and vertical directions. This is shown for the velocity signal in the penumbrae of two sunspots at 3, 4 and 5 mHz. Phase-sensitive holography demonstrates that they are significantly affected in a strong, moderately inclined magnetic field. This research indicates that the effects of the surface magnetic field are potentially very significant for local helioseismic analysis of active regions.
description: 6 pages, 8 figures
The surface states of topological insulators - Dirac fermion in curved two dimensional spaces
Creators: name: Lee, Dung-Hai
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The surface of a topological insulator is a closed two dimensional manifold. The surface states are described by the Dirac Hamiltonian in curved two dimensional spaces. For a slab-like sample with a magnetic field perpendicular to its top and bottom surfaces, there are chiral states delocalized on the four side faces. These "chiral sheets" carry both charge and spin currents. In strong magnetic fields the quantized charge Hall effect ($\s_{xy}=(2n+1)e^2/h$) will coexist with spin Hall effect.
description: PRL accepted version, new information on thickness dependence added
Anisotropy in spatial order-disorder transformations and the vortex lattice symmetry transition in $YNi_2B_2C$ and $LuNi_2B_2C$
Creators: name: Jaiswal-Nagar, D.
name: Isshiki, T.
name: Kimura, N.
name: Aoki, H.
name: Takeya, H.
name: Ramakrishnan, S.
name: Grover, A. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Explorations of the order-disorder transformation in vortex matter in single crystals of tetragonal structured (c/a $\sim$3) borocarbide superconductors, $YNi_2B_2C$ and $LuNi_2B_2C$, reveal that vortex arrays experience different effective pinning in different crystallographic directions. We surmise that correlation exists between the large anisotropy in effective pinning/disorder and the differences in the (local) symmetry transition from rhombohedral to (quasi) square vortex lattice(VL). For field along high symmetry directions, like, c-axis and ab-basal plane, the VL symmetry is close to square and the ordered state spans a large field interval. When the field is turned away from the c-axis towards ab-plane, at intermediate angles, the region of ordered state shrinks, in response to enhancement in effective pinning. At such intermediate angles the symmetry of the VL would be far from ideal triangular or square.
description: 6 pages, 5 figures (Accepted in Euro Phys. Letts.)
Globalisation, community development, and Melanesia: The North New Georgia Sustainable Social Forestry and Rural Development Project
Creators: name: Makim, Abigail
Publisher: name: Canberra, ACT: State, Society and Governance in Melanesia (SSGM) Program, The Australian National University
Year: 2002
Subjects: globalisation
Melanesia
kastom
Solomon Islands
suatainable forestry
rural development
social change
North New Georgia Sustainable Social Forestry and Rural Development Project
community development

description: This paper is about globalisation, the state, and community development in Melanesia. The paper draws on the concept of “weak state–strong society” and explores the influence of the Christian churches, non-government organisations, and kastom in shaping development and social change in a Melanesian society. The paper takes Solomon Islands as its focus and a case study is made of the North New Georgia Sustainable Social Forestry and Rural Development Project – a re-afforestation program established on the island of New Georgia in the late 1990s. Through this case study, the emergence of a locally-derived and locally-based approach to community and resource development is examined. Since the eighteenth century, the fortunes, practices, opportunities and power of Pacific societies have been significantly influenced by changes in the strategic, economic and normative order at the global level. This will obviously continue to be so. But, as in the past, this will not simply be a “fatal impact” of powerful global forces on local vulnerable societies but a “messy entanglement” in which it will matter how particular societies, and the South Pacific collectively, organise their response or create opportunities (Fry 2000, 2).
The propagation of uncertainties in stellar population synthesis modeling III: model calibration, comparison, and evaluation
Creators: name: Conroy, Charlie
name: Gunn, James E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Stellar population synthesis (SPS) provides the link between the stellar and dust content of galaxies and their observed spectral energy distributions. In the present work we perform a comprehensive calibration of our own flexible SPS (FSPS) model against a suite of data. Several public SPS models are intercompared, including the models of Bruzual & Charlot (BC03), Maraston (M05) and FSPS. The relative strengths and weaknesses of these models are evaluated, with the following conclusions: 1) The FSPS and BC03 models compare favorably with MC data at all ages, whereas M05 colors are too red and the age-dependence is incorrect; 2) All models yield similar optical and near-IR colors for old metal-poor systems, and yet they all provide poor fits to the integrated J-K and V-K colors of both MW and M31 star clusters; 4) All models predict ugr colors too red, D4000 strengths too strong and Hdelta strengths too weak compared to massive red sequence galaxies, under the assumption that such galaxies are composed solely of old metal-rich stars; 5) FSPS and, to a lesser extent, BC03 can reproduce the optical and near-IR colors of post-starburst galaxies, while M05 cannot. Reasons for these discrepancies are explored. The failure at predicting the ugr colors, D4000, and Hdelta strengths can be explained by some combination of a minority population of metal-poor stars, young stars, blue straggler and/or blue horizontal branch stars, but not by appealing to inadequacies in either theoretical stellar atmospheres or canonical evolutionary phases (e.g., the main sequence turn-off). We emphasize that due to a lack of calibrating star cluster data in regions of the metallicity-age plane relevant for galaxies, all of these models continue to suffer from serious uncertainties that are difficult to quantify. (ABRIDGED)
description: 26 pages, 16 figures, submitted to ApJ. The FSPS code can be downloaded at http://www.astro.princeton.edu/~cconroy/SPS/
Photonic crystal nanobeam lasers
Creators: name: Zhang, Yinan
name: Khan, Mughees
name: Huang, Yong
name: Ryou, Jae-Hyun
name: Deotare, Parag
name: Dupuis, Russell
name: Loncar, Marko
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photonic crystal lasers operating at room temperature based on high Q/V nanobeam cavities have been demonstrated. We reported a large spontaneous emission factor (~0.97) by fitting the L-L curve with the rate equations.
description: 3 figures
Can the Lyman Continuum leaked out of H II regions explain Diffuse Ionized Gas?
Creators: name: Seon, Kwang-Il
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an attempt to explain the diffuse H_alpha emission of a face-on galaxy M 51 with the ``standard'' photoionization model, in which the Lyman continuum (Lyc) escaping from H II regions propagates large distances into the diffuse interstellar medium (ISM). The diffuse H_alpha emission of M 51 is analyzed using thin slab models and exponential disk models in the context of the ``on-the-spot'' approximation. The scale height of the ionized gas needed to explain the diffuse H_alpha emission with the scenario is found to be of the order of ~ 1-2 kpc, consistent with those of our Galaxy and edge-on galaxies. The model also provides a vertical profile, when the galaxy is viewed edge-on, consisting of two-exponential components. However, it is found that an incredibly low absorption coefficient of kappa_0 ~ 0.4-0.8 kpc^{-1} at the galactic plane, or, equivalently, an effective cross-section as low as sigma_eff ~ 10^{-5} of the photoionization cross-section at 912A is required to allow the stellar Lyc photons to travel through the H I disk. Such a low absorption coefficient is out of accord with the properties of the ISM. Furthermore, we found that even the model that has the DIG phase only and no H I gas phase shows highly concentrated H_alpha emissions around H II regions, and can account for only < 26% of the H_alpha luminosity of the DIG. This result places a strong constraint on the ionizing source of the DIG. We also report that the H_alpha intensity distribution functions not only of the DIG, but also of H II regions in M 51, appear to be lognormal.
description: 12 pages, 8 figures, accepted for publication in ApJ
JAVA  REF Framework
Creators: name: C. Bisegni
Publisher: name: INFN Open Access Repository
Year: 2009

description: Gli applicativi di Gestione Ospiti e GOVA realizzati in ambito nazionale si basano su un framework custom per lo sviluppo di applicativi java a tre livelli. E' composto da tre parti: Client, Common e Server. Integra un sistema di comunicazione in HTTP basato sulla libreria Apache HTTPClient (http://hc.apache.org/httpclient-3.x) e usa una servlet come entry-poiny per il server layer. Lo scopo del framework è quello di velocizzare lo sviluppo di sistemi software a tre livelli e di conseguenza lo sviluppo di business logic (processi  applicativi) nel middle-tier e renderne veloce la pubblicazione e l'esecuzione tramite protocollo
Totally Asymmetric Exclusion Process with Hierarchical Long-Range Connections
Creators: name: Otwinowski, Jakub
name: Boettcher, Stefan
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A non-equilibrium particle transport model, the totally asymmetric exclusion process, is studied on a one-dimensional lattice with a hierarchy of fixed long-range connections. This model breaks the particle-hole symmetry observed on an ordinary one-dimensional lattice and results in a surprisingly simple phase diagram, without a maximum-current phase. Numerical simulations of the model with open boundary conditions reveal a number of dynamic features and suggest possible applications.
description: 10 pages, revtex4, reorganized, with some new analytical results. For related articles, see http://www.physics.emory.edu/faculty/boettcher/
Single-Spin Microscope with Sub-Nanoscale Resolution Based on Optically Detected Magnetic Resonance
Creators: name: Berman, Gennady P.
name: Chernobrod, Boris M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We summarize our new scanning magnetic 3-D imaging system. This scanning system uses optically detected magnetic resonance in a single nitrogen vacancy center in a diamond nanocrystal. The theoretical analysis and the first experimental demonstrations have proved that this method has single spin sensitivity and a sub-nanoscale spatial resolution at room temperature.
description: 4 pages, 2 figures
Quantum condensation in electron-hole bilayers with density imbalance
Creators: name: Yamashita, Kazuo
name: Asano, Kenichi
name: Ohashi, Takuma
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the two-dimensional spatially separated electron-hole system with density imbalance at absolute zero temperature. By means of the mean-field theory, we find that the Fulde-Ferrell state is fairly stabilized by the order parameter mixing effect.
description: 5 pages, 5 figures
Charge Sensing in Intrinsic Silicon Quantum Dots
Creators: name: Podd, G. J.
name: Angus, S. J.
name: Williams, D. A.
name: Ferguson, A. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report charge sensing measurements on a silicon quantum dot (QD) with a nearby silicon single electron transistor (SET) acting as an electrometer. The devices are electrostatically formed in bulk silicon using surface gates. We show that as an additional electron is added onto the quantum dot, a charge is induced on the SET of approximately 0.2e. These measurements are performed in the many electron regime, where we can count in excess of 20 charge additions onto the quantum dot.
description: To be published in Appl. Phys. Lett
Flux jumps, Second Magnetization Peak anomaly and the Peak Effect phenomenon in single crystals of $YNi_2B_2C$ and $LuNi_2B_2C$
Creators: name: Jaiswal-Nagar, D.
name: Thakur, A. D.
name: Ramakrishnan, S.
name: Grover, A. K.
name: Pal, D.
name: Takeya, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present magnetization measurements in single crystals of the tetragonal $YNi_2B_2C$ compound, which exhibit the phenomenon of peak effect as well as the second magnetization peak anomaly for H $>$ 0.5T (H $||$ c). At the lower field (50mT $
description: 11 pages, 14 figures
Multiverse Understanding of Cosmological Coincidences
Creators: name: Bousso, Raphael
name: Hall, Lawrence J.
name: Nomura, Yasunori
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There is a deep cosmological mystery: although dependent on very different underlying physics, the timescales of structure formation, of galaxy cooling (both radiatively and against the CMB), and of vacuum domination do not differ by many orders of magnitude, but are all comparable to the present age of the universe. By scanning four landscape parameters simultaneously, we show that this quadruple coincidence is resolved. We assume only that the statistical distribution of parameter values in the multiverse grows towards certain catastrophic boundaries we identify, across which there are drastic regime changes. We find order-of-magnitude predictions for the cosmological constant, the primordial density contrast, the temperature at matter-radiation equality, the typical galaxy mass, and the age of the universe, in terms of the fine structure constant and the electron, proton and Planck masses. Our approach permits a systematic evaluation of measure proposals; with the causal patch measure, we find no runaway of the primordial density contrast and the cosmological constant to large values.
description: 40 pages, 5 figures; discussion of measures extended, version to appear in Phys. Rev. D
Supernova Kicks and Misaligned Be Star Binaries
Creators: name: Martin, Rebecca G.
name: Tout, Christopher A.
name: Pringle, J. E.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Be stars are rapidly spinning B stars surrounded by an outflowing disc of gas in Keplerian rotation. Be star/X-ray binary systems contain a Be star and a neutron star. They are found to have non-zero eccentricities and there is evidence that some systems have a misalignment between the spin axis of the star and the spin axis of the binary orbit. The eccentricities in these systems are thought to be caused by a kick to the neutron star during the supernova that formed it. Such kicks would also give rise to misalignments. In this paper we investigate the extent to which the same kick distribution can give rise to both the observed eccentricity distribution and the observed misalignments. We find that a Maxwellian distribution of velocity kicks with a low velocity dispersion, $σ_k \approx 15\rm km s^{-1}$, is consistent with the observed eccentricity distribution but is hard to reconcile with the observed misalignments, typically $i \ge 25^\circ$. Alternatively a higher velocity kick distribution, $σ_k = 265 \rm km s^{-1}$, is consistent with the observed misalignments but not with the observed eccentricities, unless post-supernova circularisation of the binary orbits has taken place. We discuss briefly how this might be achieved.
description: Accepted for publication in MNRAS
A study of the hole-nesting avifauna of south-western British Columbia
Creators: name: Kelleher, Kevin Edmond
Publisher: name: University of British Columbia
Year: 2011

description: This study relates the species composition, numbers, and habits of a hole-nesting avifauna to its environment in successional stages of a coniferous forest in southwestern British Columbia. Emphasis is placed upon explaining an observed presence or absence of nest-site competition. In two breeding seasons, the hole-nesting avifauna was found to be low in numbers of both species and individuals. Most of these birds were able to excavate their own nesting cavities, and commonly did so, for which activity the habitat generally provided ample opportunity. As the species present often differed widely from one another in the type and placement of their preferred nest cavities, there was usually a surplus of different cavity types present. Secondary hole-nesters either concentrated their activities around the buildings in the nearby town, neglecting the more "natural" sites available; were not obligated to use cavities when nesting; or occurred in such low densities, and were so positioned in the available suitable habitat, as to suggest that nest-site competition had no effect upon the populations. Only scattered indications of nest-site competition were observed in wooded areas. Four species nested in crevices in buildings and in bird boxes in a small town, where their breeding population densities were much higher than in the surrounding countryside. Nest-sites were judged to be present in excess, and nest-site competition, observed infrequently, was so rare, and apparently without significant harmful effects, that it was judged to be of negligible importance as a population-regulating factor. The overall absence of nest-site competition is contributed to not only by the preferences of the species regarding their nest-sites, but also by the fact that the results of their habitat selection processes, and their living habits within these habitats, tend to keep them ecologically distinct.
The Quasar Mass-Luminosity Plane II: High Mass Turnoff Evolution and a Synchronization Puzzle
Creators: name: Steinhardt, Charles L.
name: Elvis, Martin
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use 62,185 quasars from the Sloan Digital Sky Survey DR5 sample and standard virial mass scaling laws based on the widths of H beta, Mg II, and C IV lines and adjacent continuum luminosities to explore the maximum mass of quasars as a function of redshift, which we find to be sharp and evolving. This evolution is in the sense that high-mass black holes cease their luminous accretion at higher redshift than lower-mass black holes. Further, turnoff for quasars at any given mass is more highly synchronized than would be expected given the dynamics of their host galaxies. We investigate potential signatures of the quasar turnoff mechanism, including a dearth of high-mass quasars at low Eddington ratio. These new results allow a closer examination of several common assumptions used in modeling quasar accretion and turnoff.
description: 10 pages, submitted to MNRAS
title: Konpetentzia Digitalak. Graduko ikasleentzako formakuntza materialak: 1. Informazioa eta datuen tratamendua 1.2. Informazio, datu eta eduki digitalen ebaluazioa: Aurkezpen bideoa
title: Competencias digitales. Materiales de formación para estudiantes de grado: 1. Información y tratamiento de datos 1.2. Evaluación de información, datos y contenidos digitales: Vídeo de presentación
Creators: name: CRUE-REBIUN
Publisher: name: REBIUN
Year: 2019

description: Graduko ikasleentzako konpetentzia digitalei buruzko formakuntza materialen "1.2. Informazio, datu eta eduki digitalen ebaluazioa" puntuko aurkezpen bideoa.
description: Vídeo de presentación del punto "1.2. Evaluación de información, datos y contenidos digitales" de los materiales de formación sobre competencias digitales para estudiantes de grado.
The circum-galactic gas around cosmologically simulated disks
Creators: name: Courty, Stephanie
name: Gibson, Brad K.
name: Teyssier, Romain
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We analyze the physical properties and infall rates of the circum-galactic gas around disks obtained in multi-resolved, cosmological, AMR simulations. At intermediate and low redshifts, disks are embedded into an extended, hot, tenuous corona that contributes largely in fueling the disk with non-enriched gas whereas the accretion of enriched gas from tidal streams occurs throughout episodic events. We derive an infall rate close to the disk of the same value as the one of the star formation rate in the disk and its temporal evolution as a function of galacto-centric radius nicely shows that the growth of galactic disks proceeds according to an inside-out formation scenario.
description: 4 pages, to appear in "Hunting for the Dark: The Hidden Side of Galaxy Formation", Malta, 19-23 Oct. 2009, eds. V.P. Debattista and C.C. Popescu, AIP Conf. Ser
Education for family living through cooperative pre-school groups : a study of teacher, parent, and child experiences : Greater Vancouver, 1962-1963.
Creators: name: Bauman, Adin Martin
Publisher: name: University of British Columbia
Year: 2011

description: Over the past few decades, there has developed an increasing interest in family life in Canada, by many organizations and individuals. With the greater degree of industrialization, there have been corresponding social changes, some of which are believed to be undermining the stability of the family, making support from outside sources desirable, if not necessary. Programs of education for parents and parents-to-be have arisen as a means of providing more effective support to Canadian urban families. The family life education programs that have developed are of great variety and of varied sponsorship. Through schools, churches, universities, community agencies and the mass media, attempts are being made to strengthen interpersonal relations in the family unit. Social agencies, particularly child-caring and family agencies, whom one would expect to be active in this field, would appear to be shoving little initiative in developing such services. That this is so, remains a puzzle to the writer. In this study of Co-operative Pre-School Groups in Vancouver, in which the stated purpose is the education of child and parent under the guidance of a trained teacher, attention is focused on expressed reasons for using this facility, and the values believed to derive from its use for both child and parent. The most significant finding of the study is the importance attached to parental participation in the Co-operative program. The learned relationships of the play group are transferred to the home situation. Through this learning experience, parent-child relationships take on a deeper significance and meaning that makes family living a more relaxed and pleasant experience. The study points out the importance of relating family life education programs to the actual life situations of the families concerned. It also attests to the effectiveness of the Co-operative Pre-School Group involvement as a method of providing family life education.
Further Functorial Properties of the Reticulation
Creators: name: Mureşan, Claudia
Publisher: name: arXiv
Year: 2009
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03G10, 06F35

description: In this article we prove a set of preservation properties of the reticulation functor for residuated lattices (for instance preservation of subalgebras, finite direct products, inductive limits, Boolean powers) and we transfer certain properties between bounded distributive lattices and residuated lattices through the reticulation, focusing on Stone, strongly Stone and m-Stone algebras.
description: 24 pages
Direct Imaging of Multiple Planets Orbiting the Star HR 8799
Creators: name: Marois, C.
name: Macintosh, B.
name: Barman, T.
name: Zuckerman, B.
name: Song, I.
name: Patience, J.
name: Lafreniere, D.
name: Doyon, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Direct imaging of exoplanetary systems is a powerful technique that can reveal Jupiter-like planets in wide orbits, can enable detailed characterization of planetary atmospheres, and is a key step towards imaging Earth-like planets. Imaging detections are challenging due to the combined effect of small angular separation and large luminosity contrast between a planet and its host star. High-contrast observations with the Keck and Gemini telescopes have revealed three planets orbiting the star HR 8799, with projected separations of 24, 38, and 68 astronomical units. Multi-epoch data show counter-clockwise orbital motion for all three imaged planets. The low luminosity of the companions and the estimated age of the system imply planetary masses between 5 and 13 times that of Jupiter. This system resembles a scaled-up version of the outer portion of our Solar System.
description: 30 pages, 5 figures, Research Article published online in Science Express Nov 13th, 2008
A Channel Coding Perspective of Collaborative Filtering
Creators: name: Aditya, S. T.
name: Dabeer, Onkar
name: Dey, Bikash Kumar
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider the problem of collaborative filtering from a channel coding perspective. We model the underlying rating matrix as a finite alphabet matrix with block constant structure. The observations are obtained from this underlying matrix through a discrete memoryless channel with a noisy part representing noisy user behavior and an erasure part representing missing data. Moreover, the clusters over which the underlying matrix is constant are {\it unknown}. We establish a sharp threshold result for this model: if the largest cluster size is smaller than $C_1 \log(mn)$ (where the rating matrix is of size $m \times n$), then the underlying matrix cannot be recovered with any estimator, but if the smallest cluster size is larger than $C_2 \log(mn)$, then we show a polynomial time estimator with diminishing probability of error. In the case of uniform cluster size, not only the order of the threshold, but also the constant is identified.
description: 32 pages, 1 figure, Submitted to IEEE Transactions on Information Theory