cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Discovery of new globular clusters in the Sagittarius dwarf galaxy
Creators: name: Minniti, D.
name: Ripepi, V.
name: Fernández-Trincado, J. G.
name: Alonso-García, J.
name: Smith, L. C.
name: Lucas, P. W.
name: Gómez, M.
name: Pullen, J. B.
name: Garro, E. R.
name: Cádiz, F. Vivanco
name: Hempel, M.
name: Rejkuba, M.
name: Saito, R. K.
name: Palma, T.
name: Clariá, J. J.
name: Gregg, M.
name: Majaess, D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. Globular clusters (GCs) are witnesses of the past accretion events onto the Milky Way (MW). In particular, the GCs of the Sagittarius (Sgr) dwarf galaxy are important probes of an on-going merger. Aims. Our main goal is to search for new GC members of this dwarf galaxy using the VISTA Variables in the Via Lactea Extended Survey (VVVX) near-infrared database combined with the Gaia Early Data Release 3 (EDR3) optical database. Methods. We investigated all VVVX-enabled discoveries of GC candidates in a region covering about 180 sq. deg. toward the bulge and the Sgr dwarf galaxy. We used multiband point-spread function photometry to obtain deep color-magnitude diagrams (CMDs) and luminosity functions (LFs) for all GC candidates, complemented by accurate Gaia-EDR3 proper motions (PMs) to select Sgr members and variability information to select RR Lyrae which are potential GC members. Results. After applying a strict PM cut to discard foreground bulge and disk stars, the CMDs and LFs for some of the GC candidates exhibit well defined red giant branches and red clump giant star peaks. We selected the best Sgr GCs, estimating their distances, reddenings, and associated RR Lyrae. Conclusions. We discover 12 new Sgr GC members, more than doubling the number of GCs known in this dwarf galaxy. In addition, there are 11 other GC candidates identified that are uncertain, awaiting better data for confirmation.
description: 12 pages, 6 Figures
Quantum imprints of gravitational shockwaves
Creators: name: Gray, Finnian
name: Kubiznak, David
name: May, Taillte
name: Timmerman, Sydney
name: Tjoa, Erickson
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Gravitational shockwaves are simple exact solutions of Einstein equations representing the fields of ultrarelativistic sources and idealized gravitational waves (shocks). Historically, much work has focused on shockwaves in the context of possible black hole formation in high energy particle collisions, yet they remain at the forefront of research even today. Representing hard modes in the bulk, shocks give rise to the gravitational memory effect at the classical level and implant supertranslation (BMS) hair onto a classical spacetime at the quantum level. The aim of this paper is to further our understanding of the `information content' of such supertranslations. Namely, we show that, contrary to the several claims in the literature, a gravitational shockwave does leave a quantum imprint on the vacuum state of a test quantum field and that this imprint is accessible to local observers carrying Unruh--DeWitt (UDW) detectors in this spacetime.
description: 30 pages, 2 Appendices, 6 Figures; v2 minor typos corrected and updated references
Stellar Population Gradients in Bulges along the Hubble Sequence: I. The Data
Creators: name: Gorgas, J.
name: Jablonka, P.
name: Goudfrooij, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This is the first paper presenting our long-term project aimed at studying the nature of bulges through the analysis of their stellar population gradients. We present deep spectroscopic observations along the minor axis and the data reduction for a sample of 32 bulges of edge-on spiral galaxies. We explain in detail our procedures to measure their dynamical parameters (rotation curves and velocity dispersion profiles) and line-strength indices, including the conversion to the Lick/IDS system. Tables giving the values of the dynamical parameters and line-strength indices at each galactocentric radius are presented (in electronic form) for each galaxy of the sample. The derived line-strength gradients from this dataset will be analyzed in a forthcoming paper to set constraints on the different scenarios for the formation of the bulges.
description: Accepted for publication in A&A
Factors Influencing the Success of an ERP System: A Study in the Context of an Agricultural Enterprise in Thailand
Creators: name: Somsit Duangekanong
Publisher: name: Silpakorn University Research and Development Institute
Year: 2014
Subjects: Enterprise resource planning (ERP), Critical success factors (CSF), Information and system quality and net benefits

description: 1, 8, Silpakorn University Science and Technology Journal
An electro-optically tunable microring laser monolithically integrated on lithium niobate on insulator
Creators: name: Yin, Difeng
name: Zhou, Yuan
name: Liu, Zhaoxiang
name: Wang, Zhe
name: Zhang, Haisu
name: Fang, Zhiwei
name: Chu, Wei
name: Wu, Rongbo
name: Zhang, Jianhao
name: Chen, Wei
name: Wang, Min
name: Cheng, Ya
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We demonstrate monolithic integration of an electro-optically (EO) tunable microring laser on lithium niobate on insulator (LNOI) platform. The device is fabricated by photolithography assisted chemo-mechanical etching (PLACE), and the pump laser is evanescently coupled into the erbium (Er3+) doped LN microring laser using an undoped LN waveguide mounted above the microring. The quality factor of the LN microring resonator is measured as high as 1.54x10^5 at the wavelength of 1542 nm. Lasing action can be observed at a pump power threshold below 3.5 mW using a 980 nm continuous-wave pump laser. Finally, tuning of the laser wavelength is achieved by varying the electric voltage on the microelectrodes fabricated in the vicinity of microring waveguide, showing an EO coefficient of 0.33 pm/V.
description: 4 pages, 4 figures
Clinical Outcomes and Risk Factors Affecting 30-day Mortality and Treatment Failure of Patients Infected with Carbapenem-Resistant Acinetobacter baumanii in a General Hospital
Creators: name: Wichai Santimaleeworagun
name: Wandee Sumret
name: Kanokwan Limsubjaroen
name: Nattaporn Ruangnara
name: Parada Sujarittham
name: Ploypailin Mulmek
name: Weerayuth Saelim
Publisher: name: Silpakorn University Research and Development Institute
Year: 2014
Subjects: Acinetobacter baumannii, Carbapenem-resistant, Clinical outcomes, Risk factors

description: 1, 8, Silpakorn University Science and Technology Journal
Mutation Induction in Physic Nut (Jatropha curcas L.) by Colchicine Treatments
Creators: name: Pantipa Na Chiangmai
name: Yupa Pootaeng-On
name: Pimjai Meetum
name: Neeranoot Jankomon
name: Daungruethai Muangnoi
name: Duanpen Kitthip
Publisher: name: Silpakorn University Research and Development Institute
Year: 2014
Subjects: Aneuploid, Energy plant, Genetic variability, Mixoploid, Ploidy chromosome level

description: 2, 8, Silpakorn University Science and Technology
What controls the UV-to-X-ray continuum shape in quasars?
Creators: name: Timlin, John D.
name: Brandt, W. N.
name: Laor, Ari
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an investigation of the interdependence of the optical-to-X-ray spectral slope ($α_{\rm ox}$), the HeII equivalent-width (EW), and the monochromatic luminosity at 2500 Angstroms ($L_{2500}$). The values of $α_{\rm ox}$ and HeII EW are indicators of the strength/shape of the quasar ionizing continuum, from the ultraviolet (UV; 1500--2500 Angstroms), through the extreme ultraviolet (EUV; 300--50 Angstroms), to the X-ray (2 keV) regime. For this investigation, we measure the HeII EW of 206 radio-quiet quasars devoid of broad absorption lines that have high-quality spectral observations of the UV and 2 keV X-rays. The sample spans wide redshift ($\approx$ 0.13--3.5) and luminosity (log$(L_{2500}$) $\approx$ 29.2--32.5 erg s$^{-1}$ Hz$^{-1}$) ranges. We recover the well-known $α_{\rm ox}$--$L_{2500}$ and HeII EW--$L_{2500}$ anti-correlations, and we find a similarly strong correlation between $α_{\rm ox}$ and HeII EW, and thus the overall spectral shape from the UV, through the EUV, to the X-ray regime is largely set by luminosity. A significant $α_{\rm ox}$--HeII EW correlation remains after removing the contribution of $L_{2500}$ from each quantity, and thus the emission in the EUV and the X-rays are also directly tied. This set of relations is surprising, since the UV, EUV, and X-ray emission are expected to be formed in three physically distinct regions. Our results indicate the presence of a redshift-independent physical mechanism that couples the continuum emission from these three different regions, and thus controls the overall continuum shape from the UV to the X-ray regime.
description: 19 pages, 10 Figures
Additional file 1 of Causal inference concepts applied to three observational studies in the context of vaccine development: from theory to practice
Creators: name: Gvozdenović, Emilia
name: Malvisi, Lucio
name: Cinconze, Elisa
name: Vansteelandt, Stijn
name: Nakanwagi, Phoebe
name: Aris, Emmanuel
name: Rosillon, Dominique
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: Additional file 1: Table S1. Hill’s Criteria for causality, 1965
Xazrati Abu Bakr Siddiqning islomdan oldingi va keying hayotlari
Creators: name: Islom  Mavlonov Mavlon o'gli, Toshkent axborot texnalogiyalari universiteti Samarqand filiali talabasi
name: Ilmiy rahbar: X.U.Samatov
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqola johiliyat davrida ilk marta islom dinini qabul qilgan sahobaning hayoti, islomgacha va halifalik davrida qilgan ishlari shuningdek Rasululloh va sahobalarning boshidan kechgan qiyinchiliklari Abu Bakr bilan Rasulullohh o'rtasidagi munosabatlari haqida
Understanding Bond Futures and Valuation
Creators: name: Xiao, David
Publisher: name: Zenodo
Year: 2020
Subjects: Bond future, bond, future contract, cheapest to delivery, conversion factor, forward bond price, valuation model

description: A bond future is a future contract in which the asset for delivery is a government bond. Any government bonds that meet the maturity specification of a future contract are eligible for delivery. All eligible delivery bonds construct the delivery basket where each bond has its own conversion factor. Conversion factors are used to equalise the coupon and accrued interest differences of all the deliverable bonds. The seller usually picks up the cheapest bond in the basket to deliver, called the cheapest-to-deliver (CTD). The CTD bond is normally delivered on the last delivery day of the month. This presentation provides an overview of bond future product and valuation.
description: https://ia803404.us.archive.org/29/items/fi-bond-future-11/FiBondFuture-archive.pdf
Additional file 2 of Causal inference concepts applied to three observational studies in the context of vaccine development: from theory to practice
Creators: name: Gvozdenović, Emilia
name: Malvisi, Lucio
name: Cinconze, Elisa
name: Vansteelandt, Stijn
name: Nakanwagi, Phoebe
name: Aris, Emmanuel
name: Rosillon, Dominique
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: Additional file 2. Detailed description of exchangeability, positivity and consistency
Public Awareness of LGBT Rights
Creators: name: Alexandrou, Alexa
name: Huskey, Jared
name: Lari, Sarah
name: Saleemi, Mustafa
name: Yonkers, Leland
Publisher: name: The University of Texas at Austin
Year: 2018
Subjects: Advertising
Public Relations
LGBT
Rights
Public Awareness

description: Power point that highlights the importance of LGBT rights and the progression of the LGBT community over time.
Measurement of the Aerosol Phase Function at the Pierre Auger Observatory
Creators: name: BenZvi, S. Y.
name: Connolly, B. M.
name: Matthews, J. A. J.
name: Prouza, M.
name: Visbal, E. F.
name: Westerhoff, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Air fluorescence detectors measure the energy of ultra-high energy cosmic rays by collecting fluorescence light emitted from nitrogen molecules along the extensive air shower cascade. To ensure a reliable energy determination, the light signal needs to be corrected for atmospheric effects, which not only attenuate the signal, but also produce a non-negligible background component due to scattered Cherenkov light and multiple-scattered light. The correction requires regular measurements of the aerosol attenuation length and the aerosol phase function, defined as the probability of light scattered in a given direction. At the Pierre Auger Observatory in Malargue, Argentina, the phase function is measured on an hourly basis using two Aerosol Phase Function (APF) light sources. These sources direct a UV light beam across the field of view of the fluorescence detectors; the phase function can be extracted from the image of the shots in the fluorescence detector cameras. This paper describes the design, current status, standard operation procedure, and performance of the APF system at the Pierre Auger Observatory.
description: 19 pages, 10 figures (4 in color), replaced with version accepted for publication in Astroparticle Physics
Disk-Evaporation Fed Corona: Structure and Evaporation Feature with Magnetic Field
Creators: name: Qian, Lei
name: Liu, B. F.
name: Wu, Xue-Bing
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The disk-corona evaporation model naturally interprets many observational phenomena in black hole X-ray binaries, such as the truncation of an accretion disk and the spectral state transitions. On the other hand, magnetic field is known to play an important role in transporting angular momentum and producing viscosity in accretion flows. In this work, we explicitly take the magnetic field in the accretion disk corona into account and numerically calculate the coronal structure on the basis of our two-temperature evaporation code. We show that the magnetic field influences the coronal structure by its contribution to the pressure, energy and radiative cooling in the corona and by decreasing the vertical heat conduction. We found that the maximal evaporation rate keeps more or less constant ($\sim 0.03$ Eddington rate) while the strength of magnetic fields changes, but that the radius corresponding to the maximal evaporation rate decreases with increasing magnetic field. This predicts that the spectral state transition always occurs at a few percent of Eddington accretion rate, while the inner edge of thin disk can be at $\sim 100 R_{\rm S} $ or even less in the hard state before the transition to the soft state. These results alleviate the problem that previous evaporation models predict too large a truncation radius, and are in better agreement with the observational results of several black hole X-ray binaries, though discrepancies remain.
description: Accepted by ApJ
Polymerization Force Driven Buckling of Microtubule Bundles Determines the Wavelength of Patterns Formed in Tubulin Solutions
Creators: name: Guo, Yongxing
name: Liu, Yifeng
name: Tang, Jay X.
name: Valles, James M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We present a model for the spontaneous formation of a striated pattern in polymerizing microtubule solutions. It describes the buckling of a single microtubule (MT) bundle within an elastic network formed by other similarly aligned and buckling bundles and unaligned MTs. Phase contrast and polarization microscopy studies of the temporal evolution of the pattern imply that the polymerization of MTs within the bundles creates the driving compressional force. Using the measured rate of buckling, the established MT force-velocity curve and the pattern wavelength, we obtain reasonable estimates for the MT bundle bending rigidity and the elastic constant of the network. The analysis implies that the bundles buckle as solid rods.
description: 4 pages, 4 figures
Additional file 1 of Pesticide traces in local crops of Sancti Spíritus, Cuba: risk assessment study
Creators: name: López-Dávila, Edelbis
name: Houbraken, Michael
name: Rop, Jasmine De
name: Claus, Gregor
name: Wumbei, Abukari
name: Romero, Osvaldo Romero
name: Spanoghe, Pieter
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Additional file 1: S1. MS/MS-transitions, applied collision energy and dwell time for the active ingredients analyzed in the study. S2. Vegetable and rice consumption data for the evaluated strata obtained from the consumption survey and used in the deterministic and probabilistic risk assessment. S3. Technical explanation of @Risk. S4. Vegetable and rice samples with pesticide residues detected by LC-MS/MS in 2017, 2018, and 2019. In certain cases, pesticide residues are detected but lay under the limit of quantification (0.001 mg kg-1) and are therefore reported as “
A detailed analysis of GW190521 with phenomenological waveform models
Creators: name: Estellés, Héctor
name: Husa, Sascha
name: Colleoni, Marta
name: Mateu-Lucena, Maite
name: Planas, Maria de Lluc
name: García-Quirós, Cecilio
name: Keitel, David
name: Ramos-Buades, Antoni
name: Mehta, Ajit Kumar
name: Buonanno, Alessandra
name: Ossokine, Serguei
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In this paper we present an extensive analysis of the GW190521 gravitational wave event with the current (fourth) generation of phenomenological waveform models for binary black hole coalescences. GW190521 stands out from other events since only a few wave cycles are observable. This leads to a number of challenges, one being that such short signals are prone to not resolve approximate waveform degeneracies, which may result in multi-modal posterior distributions. The family of waveform models we use includes a new fast time-domain model IMRPhenomTPHM, which allows us extensive tests of different priors and robustness with respect to variations in the waveform model, including the content of spherical harmonic modes. We clarify some issues raised in a recent paper [Nitz&Capano], associated with possible support for a high-mass ratio source, but confirm their finding of a multi-modal posterior distribution, albeit with important differences in the statistical significance of the peaks. In particular, we find that the support for both masses being outside the PISN mass-gap, and the support for an intermediate mass ratio binary are drastically reduced with respect to what Nitz&Capano found. We also provide updated probabilities for associating GW190521 to the potential electromagnetic counterpart from ZTF.
description: 20 pages, 13 figures, 7 tables. Data release at https://zenodo.org/record/4751655
On conformal Killing-Yano tensors for Plebanski-Demianski family of solutions
Creators: name: Kubiznak, David
name: Krtous, Pavel
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the explicit expressions for the conformal Killing-Yano tensors for the Plebanski-Demianski family of type D solutions in four dimensions. Some physically important special cases are discussed in more detail. In particular, it is demonstrated how the conformal Killing-Yano tensor becomes the Killing-Yano tensor for the solutions without acceleration. A possible generalization into higher dimensions is studied. Whereas the transition from the nonaccelerating to accelerating solutions in four dimensions is achieved by the conformal rescaling of the metric, we show that such a procedure is not sufficiently general in higher dimensions - only the maximally symmetric spacetimes in 'accelerated' coordinates are obtained.
description: 7 pages, no figures
On gas drag in a circular binary system
Creators: name: Ciecielag, P.
name: Ida, S.
name: Gawryszczak, A.
name: Burkert, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate both analytically and numerically the motion of massless particles orbiting primary star in a close circular binary system with particular focus on the gas drag effects. These are the first calculations with particles ranging in size from 1m to 10km, which account for the presence of a tidally perturbed gaseous disk. We have found numerically that the radial mass transport by the tidal waves plays a crucial role in the orbital evolution of particles. Numerical results are confirmed analytical calculations that do not assume anything about origin of the radial flow in the disk. We demonstrate that the migration rate of a particle in a disk out of radial equilibrium is enhanced due to the enhanced mass flux of gas colliding with the particle and the migration is always directed inward regardless of the sign of the radial gas velocity. Within the framework of the perturbation theory we derive general, formulae for short-term variations of the particle semi-major axis, eccentricity and inclination in such disk. The formulae account for departures from axial symmetry by introducing effective components of the gas velocity. They agree with numerical results within several percent. We have also found in numerical simulations that the tidal waves introduce coherence in periastron longitude and eccentricity for particles on neighbouring orbits. The degree of the coherence depends on the particle size and on the distance from the primary star, being most prominent for particles with 10m radius. The results are important mainly in the context of planetesimal formation and, to a lesser degree, during the early planetesimal accretion stage.
description: 10 pages, 9 figures
Neutron Inelastic Scattering Processes as Background for Double-Beta Decay Experiments
Creators: name: Mei, D. -M.
name: Elliott, S. R.
name: Hime, A.
name: Gehman, V.
name: Kazkaz, K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate several Pb$(n,n'γ$) and Ge$(n,n'γ$) reactions. We measure $γ$-ray production from Pb$(n,n'γ$) reactions that can be a significant background for double-beta decay experiments which use lead as a massive inner shield. Particularly worrisome for Ge-based double-beta decay experiments are the 2041-keV and 3062-keV $γ$ rays produced via Pb$(n,n'γ$). The former is very close to the ^{76}Ge double-beta decay endpoint energy and the latter has a double escape peak energy near the endpoint. Excitation $γ$-ray lines from Ge$(n,n'γ$) reactions are also observed. We consider the contribution of such backgrounds and their impact on the sensitivity of next-generation searches for neutrinoless double-beta decay using enriched germanium detectors.
description: 16 pages, 7 figures
Periodic accretion from a circumbinary disk in the young binary UZ Tau E
Creators: name: Jensen, Eric L. N.
name: Dhital, Saurav
name: Stassun, Keivan G.
name: Patience, Jenny
name: Herbst, William
name: Walter, Frederick M.
name: Simon, Michal
name: Basri, Gibor
name: ;
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Close pre-main-sequence binary stars are expected to clear central holes in their protoplanetary disks, but the extent to which material can flow from the circumbinary disk across the gap onto the individual circumstellar disks has been unclear. In binaries with eccentric orbits, periodic perturbation of the outer disk is predicted to induce mass flow across the gap, resulting in accretion that varies with the binary period. This accretion may manifest itself observationally as periodic changes in luminosity. Here we present a search for such periodic accretion in the pre-main-sequence spectroscopic binary UZ Tau E. We present BVRI photometry spanning three years; we find that the brightness of UZ Tau E is clearly periodic, with a best-fit period of 19.16 +/- 0.04 days. This is consistent with the spectroscopic binary period of 19.13 days, refined here from analysis of new and existing radial velocity data. The brightness of UZ Tau E shows significant random variability, but the overall periodic pattern is a broad peak in enhanced brightness, spanning more than half the binary orbital period. The variability of the H-alpha line is not as clearly periodic, but given the sparseness of the data, some periodic component is not ruled out. The photometric variations are in good agreement with predictions from simulations of binaries with orbital parameters similar to those of UZ Tau E, suggesting that periodic accretion does occur from circumbinary disks, replenishing the inner disks and possibly extending the timescale over which they might form planets.
description: Accepted by the Astronomical Journal; to appear July 2007; Corrected minor typos
Housing for Sikh seniors
Creators: name: Rajan, Mrunalini
Publisher: name: University of British Columbia
Year: 2010

description: Housing needs for the elderly are a function of several processes accompanying aging. In the case of visible, immigrant seniors, additional factors such as ethnic origin and their length of stay in Canada come into play. Sikhs are a predominant and one of the fastest growing sectors in the Canadian multicultural mosaic. This visible ethnic group has a long history of immigration to British Columbia. Canadian immigration policies have shaped the character (age-sex distribution, occupation, education, geographic location) of the Sikh community over the period of their immigration history. Immigration trends, acculturation of the Canadian-born generation, changing family patterns and the efforts of the community to maintain its culture, religion and language, all shape the housing needs of Sikh seniors in the Canadian context. At present, the demographic profile of Canadian Sikhs reveals that the majority of them are in the 20-50 age group. This profile combined with the influx of new immigrants including aged parents and other relatives, indicates an imminent increase in the number of Sikh elderly in Canada. This study traces the assimilation of this community in Vancouver, and examines the suitability of housing options available to the mainstream Canadian elderly, for the Sikh elderly. A particular example considered for the purpose of this thesis is the small-scale congregate housing (Abbeyfield) alternative. Information from literature and a clustered survey of elderly Sikhs in Vancouver city suggest the emerging need for an alternative to their traditional housing arrangements. Prospective residents for alternative housing are likely to be elderly, widowed Sikh males. For them, the Abbeyfield option due to its domestic scale and adaptability, has been viewed as a viable solution.
Questionnaire development and validation for re-entry women in a federal government training program
Creators: name: Brawley, Beverly Ann
Publisher: name: University of British Columbia
Year: 2010

description: The purpose of this study was to develop a questionnaire designed to obtain valid and reliable information which might contribute to an explanation as to why some Re-entry women make successful transitions from home to work while others do not. The questionnaire development entailed three phases, each building on the results of the previous phase. In the first phase, Re-entry project coordinators in British Columbia were surveyed to determine what variables gleaned from the literature they felt were most important to the transition process. The second phase involved generating questionnaire items for the variables resulting from the literature and validating the items by a panel of expert judges. The questionnaire was constructed of the resulting items. In the third phase empirical validation of the questionnaire was determined by the responses of 106 Re-entry women who were administered the questionnaire in the last quarter of their training program. Item and factor analyses were conducted on the responses and discriminant function analysis was employed to determine which variables distinguished between those women who made successful transitions and those who did not. Five main factors - a) attitude regarding appropriate job in the current labour market; b) marital status; c) self-esteem; d) educational attainment and e) support from mate were found to distinguish with a 7 6.4% accuracy rate, between women who made a transition within 56 days of completing their training program and those who did not.
Automated glycan assembly of peptidoglycan backbone fragments
Creators: name: Dallabernardina, Pietro
name: Benazzi, Valentina
name: Laman, Jon D.
name: Seeberger, Peter H.
name: Loeffler, Felix F.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: automated glycan assembly
subject: peptidoglycan backbone fragments
subject: autoimmune disorders
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: We report the automated glycan assembly (AGA) of different oligosaccharide fragments of the bacterial peptidoglycan (PGN) backbone. Iterative addition on a solid support of an acetyl glucosamine and a new muramic acid building block is followed by cleavage from the solid support and final deprotection providing 10 oligosaccharides up to six units.
Teaching Foresight and Futures Literacy and Its Integration into University Curriculum
Creators: name: Kononiuk, Anna
name: Sacio-Szymańska, Anna
name: Ollenburg, Stefanie
name: Trivelli, Leonello
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: foresight
subject: long-term strategies
subject: future-orientation
subject: Futures Literacy
subject: entrepreneurship
subject: competences
subject: eLearning
subject: 300 Sozialwissenschaften::370 Bildung und Erziehung::370 Bildung und Erziehung

description: Despite the accelerated dynamics of the environment, higher education institutions slowly update their curricula in entrepreneurship education according to global challenges and market needs. Moreover, knowledge and good practice exchanges between educators of futures studies, business representatives, and academics is limited. This article aims to present a methodology for prototyping an online course for individuals to become more future-oriented in their professional and personal settings. The main research problems tackled by the authors relate to: 1) the identification of competences that would help academics, entrepreneurs, and students to deal with uncertainty and to 2) convey the competences to the target groups through learning topics selected from futures studies and the entrepreneurship repertoire. The authors of the article undertook and coordinated theoretical and empirical research on foresight and Futures Literacy and its correspondence with entrepreneurship within the beFORE project funded under the Erasmus+ program’s Knowledge Alliance scheme. The research process resulted in the identification of 12 key competence items and the development of a free, approximately 34-hour-long online course consisting of seven self-standing modules, 25 lessons, and 79 learning topics corresponding to these competences. The originality of the paper is in its contribution to the discussion on the competences and online course content that efficiently increase the capacities of using the future(s) in professional, academic, and personal settings.
Effect of node deleting on network structure
Creators: name: Deng, Ke
name: Zhao, Heping
name: Li, Dejun
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The ever-increasing knowledge of the structure of various real-world networks has uncovered their complex multi-mechanism-governed evolution processes. Therefore, a better understanding of the structure and evolution of these networked complex systems requires us to describe such processes in a more detailed and realistic manner. In this paper, we introduce a new type of network growth rule which comprises addition and deletion of nodes, and propose an evolving network model to investigate the effect of node deleting on network structure. It is found that, with the introduction of node deleting, network structure is significantly transformed. In particular, degree distribution of the network undergoes a transition from scale-free to exponential forms as the intensity of node deleting increases. At the same time, nontrivial disassortative degree correlation develops spontaneously as a natural result of network evolution in the model. We also demonstrate that node deleting introduced in the model does not destroy the connectedness of a growing network so long as the increasing rate of edges is not excessively small. In addition, it is found that node deleting will weaken but not eliminate the small-world effect of a growing network, and generally it will decrease the clustering coefficient in a network.
description: 12 pages, 9 figures, to be published in physica a
High-Pressure Behavior and Disorder for Ag2ZnSnS4 and Ag2CdSnS4
Creators: name: Küllmey, Tim
name: Hein, Jakob
name: Heppke, Eva M.
name: Efthimiopoulos, Ilias
name: Paulus, Beate
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: High-Pressure Behavior
subject: Ag2ZnSnS4
subject: Ag2CdSnS4
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: We carried out first-principles calculations to simulate Ag2ZnSnS4 and Ag2CdSnS4 and calculated enthalpies of different plausible structural models (kesterite-type, stannite-type, wurtzkesterite-type, wurtzstannite-type, and GeSb-type) to identify low- and high-pressure phases. For Ag2ZnSnS4, we predict the following transition: kesterite-type→[8.2GPa]→ GeSb-type. At the transition pressure, the electronic structure changes from semiconducting to metallic. For Ag2CdSnS4, we cannot decide which of the experimentally observed structures (kesterite-type or wurtzkesterite-type) is the ground-state structure because their energy difference is too small. At 4.7 GPa, however, we predict a transition to the GeSb-type structure with metallic character for both structures. Regarding the sensitivity of the material to disorder, a major drawback for solar cell applications, Ag2CdSnS4 behaves similar to Cu2ZnSnS4, both showing a high tendency to cationic disorder. In contrast, the disordered structures in Ag2ZnSnS4 are much higher in energy, and therefore, the material is less affected by disorder.
Detuned Twin-Signal-Recycling for ultra-high precision interferometers
Creators: name: Thuering, Andre
name: Schnabel, Roman
name: Lueck, Harald
name: Danzmann, Karsten
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a new interferometer technique for high precision phase measurements such as those in gravitational wave detection. The technique utilizes a pair of optically coupled resonators that provides identical resonance conditions for the upper as well the lower phase modulation signal sidebands. This symmetry significantly reduces the noise spectral density in a wide frequency band compared with single sideband recycling topologies of current and planned gravitational wave detectors. Furthermore the application of squeezed states of light becomes less demanding.
Pricing Bond Future Option
Creators: name: Xiao, David
Publisher: name: Zenodo
Year: 2020
Subjects: Bond future option, bond future, conversion factor, cheap to delivery, forward bond price, Black Scholes, binomial tree.

description: A bond future option is an option contract that gives the holder the right but not the obligation to buy or sell a bond future at a predetermined price. The writer/seller receives a premium from the buyer for undertaking this obligation. Options are leveraged instruments that allow the owner to control a large amount of the underlying asset with a smaller amount of money. Bond future options offer significant advantages for reducing costs, enhancing returns and managing risk. They could be European style or American style. This presentation provides an overview of bond future option product and valuation.
description: https://ia803407.us.archive.org/11/items/fi-bond-future-option-12/FiBondFutureOption-archive.pdf
VLBI observations of nineteen GHz-Peaked-Spectrum radio sources at 1.6 GHz
Creators: name: Liu, Xiang
name: Cui, Lang
name: Luo, Wen-Feng
name: Shi, Wei-Zhao
name: Song, Hua-Gang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims and Methods: We present the results of VLBI observations of nineteen GHz-Peaked-Spectrum (GPS) radio sources at 1.6 GHz. Of them, 15 sources are selected from the Parkes Half Jansky (PHJ) sample (Snellen 2002), 4 others are from our previous observation list. We aimed at imaging the structure of GPS sources, searching for Compact Symmetric Objects (CSOs) and studying the absorption for the convex radio spectra of GPS sources. Results: We obtained total intensity 1.6 GHz VLBI images of 17 sources for the first time. Of them, 80% show mini-double-lobe radio structure, indicating that they are CSOs or candidates, and their host AGNs could be edge-on to us. This result suggests that there is a high incidence of mini double-lobe sources (or CSOs) in the PHJ sample. The sources J0323+0534, J1135-0021, J1352+0232, J2058+0540, J2123-0112 and J2325-0344 with measured redshift, showing double-lobe structure with sizes of <1 kpc, are classified as CSOs. Three sources J1057+0012, J1600-0037 and J1753+2750 are considered as core-jet sources according to their morphologies and flux variability.
description: 11 pages, 12 figures, to appear in AA
Surface Encapsulation for Low-Loss Silicon Photonics
Creators: name: Borselli, M.
name: Johnson, T. J.
name: Michael, C. P.
name: Henry, M. D.
name: Painter, Oskar
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Encapsulation layers are explored for passivating the surfaces of silicon to reduce optical absorption in the 1500-nm wavelength band. Surface-sensitive test structures consisting of microdisk resonators are fabricated for this purpose. Based on previous work in silicon photovoltaics, coatings of SiNx and SiO2 are applied under varying deposition and annealing conditions. A short dry thermal oxidation followed by a long high-temperature N2 anneal is found to be most effective at long-term encapsulation and reduction of interface absorption. Minimization of the optical loss is attributed to simultaneous reduction in sub-bandgap silicon surface states and hydrogen in the capping material.
description: 4 pages, 3 figures
On the definition of the domain growth rate constant on a two dimensional substrate
Creators: name: Seki, Kazuhiko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In chemical vapor deposition (CVD) methods, the domain grows by attachment of diffusing surface bound species on the substrate to an island of solid domain. We formulate the process of single domain growth under two-dimensional diffusion by taking into account the movement of the domain boundary. We first discuss two types of definition of the domain area growth rate constant; the one defined through the domain size divided by the time duration of CVD growth and the other defined through the area divided by time. Then, we show that the domain size is proportional to time for the reaction limited growth and the domain area is proportional to time for the diffusion limited growth. We also show that the domain area growth rate changes from the reaction limited growth to the diffusion limited growth as the domain size increases beyond a characteristic size.
description: 1 figure
Preattentive phonotactic processing as indexed by the mismatch negativity
Creators: name: Jacobsen, Thomas
name: Steinberg, Johanna
name: Truckenbrodt, Hubert
Publisher: name: MIT Press
Year: 2010
Subjects: subject: Speech sounds
subject: Perception
subject: Assimilation
subject: Representations
subject: Brain
subject: MMN
subject: 150 Psychologie

description: Processing of an obligatory phonotactic restriction outside the focus of the participants ' attention was investigated by means of ERPs using (reversed) experimental oddball blocks. Dorsal fricative assimilation (DFA) is a phonotactic constraint in German grammar that is violated in *[epsilon x] but not in [ox], [epsilon integral], and [o integral]. These stimulus sequences engage the auditory deviance detection mechanism as reflected by the MMN component of the ERP. In Experiment 1 (n= 16), stimuli were contrasted pairwise such that they shared the initial vowel but differed with regard to the fricative. Phonotactically ill- formed deviants elicited stronger MMN re-sponses than well-formed deviants that differed acoustically in the sameway fromthe standard stimulation but did not contain a phonotactic violation. In Experiment 2 (n = 16), stimuli were contrasted such that they differed with regard to the vowel but shared the fricative. MMN was elicited by the vowel change. An additional, laterMMN response was observed for the phonotactically ill-formed syllable only. This MMN cannot be attributed to any phonetic or segmental difference between standard and deviant. These findings suggest that implicit phonotactic knowledge is activated and applied in preattentive speech processing.
Moment switching in nanotube magnetic force probes
Creators: name: Kirtley, John R.
name: Deng, Zhifeng
name: Luan, Lan
name: Yenilmez, Erhan
name: Dai, Hongjie
name: Moler, Kathryn A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A recent advance in improving the spatial resolution of magnetic force microscopy (MFM) uses as sensor tips carbon nanotubes grown at the apex of conventional silicon cantilever pyramids and coated with a thin ferromagnetic layer. Magnetic images of high density vertically recorded media using these tips exhibit a doubling of the spatial frequency under some conditions. Here we demonstrate that this spatial frequency doubling is due to the switching of the moment direction of the nanotube tip. This results in a signal which is proportional to the absolute value of the signal normally observed in MFM. Our modeling indicates that a significant fraction of the tip volume is involved in the observed switching, and that it should be possible to image very high bit densities with nanotube magnetic force sensors.
description: 10 pages
Relationship between non-exponentiality of relaxation and relaxation time at the glass transition
Creators: name: Trachenko, K.
name: Roland, C. M.
name: Casalini, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: By analyzing the experimental data for various glass-forming liquids and polymers, we find that non-exponentiality $β$ and the relaxation time $τ$ are uniquely related: $\log(τ)$ is an approximately linear function of $1/β$, followed by a crossover to a higher linear slope. We rationalize the observed relationship using a recently developed approach, in which the problem of the glass transition is discussed as the elasticity problem.
Callable Bond and Valuation Introduction
Creators: name: Xiao, David
Publisher: name: Zenodo
Year: 2020
Subjects: bond, callable bond, puttable bond, bond option, callable bond pricing

description: A callable bond is a bond in which the issuer has the right to call the bond at specified times from the investor for a specified price. At each callable date prior to the bond maturity, the issuer may recall the bond from its investor by returning the investor’s money. The underlying bonds can be fixed rate bonds or floating rate bonds. A callable bond can therefore be considered a vanilla underlying bond with an embedded Bermudan style option. Callable bonds protect issuers. Therefore, a callable bond normally pays the investor a higher coupon than a non-callable bond. For issuers, callable bonds allow them to reduce interest costs at a future date should rate decrease. For investors, callable bonds allow them to earn a higher interest rate of return until the bonds are called off. If interest rates have declined since the issuer first issues the bond, the issuer is like to call its current bond and reissues it at a lower coupon. Callable bonds protect issuers. Therefore, a callable bond normally pays investors a higher coupon than a non-callable bond. This presentation gives an overview of callable bond and valuation model.
description: https://ia903407.us.archive.org/20/items/fi-callable-bond-13/FiCallableBond-archive.pdf
Power Spectra to 1% Accuracy between Dynamical Dark Energy Cosmologies
Creators: name: Francis, Matthew J.
name: Lewis, Geraint F.
name: Linder, Eric V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: For dynamical dark energy cosmologies we carry out a series of N-body gravitational simulations, achieving percent level accuracy in the relative mass power spectra at any redshift. Such accuracy in the power spectrum is necessary for next generation cosmological mass probes. Our matching procedure reproduces the CMB distance to last scattering and delivers subpercent level power spectra at z=0 and z~3. We discuss the physical implications for probing dark energy with surveys of large scale structure.
description: 9 pages, 14 figures, submitted to MNRAS