cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Danceland: a production record
Creators: name: Cairns, Glen
Publisher: name: University of British Columbia
Year: 2009

description: The thesis is a record of the writing and rehearsal process which led to the British premiere of the full length Canadian play, Danceland, at The Old Red Lion Theatre, London, in November of 1994. The first chapter is a discussion of the dramatic theories and historical research which informed the initial creative writing process. The second chapter is the final draft of the play itself. The third chapter is a record of the rehearsal and production process, as well as an overview of the major dramaturgical problems which the actors, director and designers encountered during rehearsals of the play. A full cast and crew list and the reviews from the British press are contained in the appendices. The playwright's "experiment" which sits at the heart of this production record is that Aristotle's idea of "place" is essential to the creation of an indigenous, Canadian dramatic literature. The writing process, however, is only the beginning of the translation of drama from the page to the stage; and it is this final, rehearsal and production process which demands that all dramatic theory be placed within the context of believable characterization and dramatic action.
Andreev bound states and tunneling characteristics of a non-centrosymmetric superconductor
Creators: name: Iniotakis, C.
name: Hayashi, N.
name: Sawa, Y.
name: Yokoyama, T.
name: May, U.
name: Tanaka, Y.
name: Sigrist, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The tunneling characteristics of planar junctions between a normal metal and a non-centrosymmetric superconductor like CePt3Si are examined. It is shown that the superconducting phase with mixed parity can give rise to characteristic zero-bias anomalies in certain junction directions. The origin of these zero-bias anomalies are Andreev bound states at the interface. The tunneling characteristics for different directions allow to test the structure of the parity-mixed pairing state.
description: 4 pages, 3 figures
Research, Development and Application of National Innovation System of Science and Technology for the Development of Sustainable Oil Palm Agribusiness in Indonesia
Creators: name: E. Gumbira-Sa?Id
Publisher: name: Asian Forum on Business Education (AFBE)
Year: 2011
Subjects: National Innovation System,research and development,business networking,sustainable oil palm agribusiness,focus group discussion

description: 1, 4, AFBE Journal
Tunability of the elastocaloric response in main-chain liquid crystalline elastomers
Creators: name: Lavrič, M.
name: Derets, N.
name: Črešnar, D.
name: Cresta, V.
name: Domenici, V.
name: Rešetič, A.
name: Skačej, G.
name: Sluban, M.
name: Umek, P.
name: Zalar, B.
name: Kutnjak, Z.
name: Rožič, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Materials exhibiting a large caloric effect could lead to the development of new generation of heat-management technologies that will have better energy efficiency and be potentially more environmentally friendly. The focus of caloric materials investigations has shifted recently from solid-state materials toward soft materials, such as liquid crystals and liquid crystalline elastomers. It has been shown recently that a large electrocaloric effect exceeding 7 K can be observed in smectic liquid crystals. Here, we report on a significant elastocaloric response observed by direct elastocaloric measurements in main-chain liquid crystal elastomers. It is demonstrated that the character of the nematic to paranematic/isotropic transition can be tuned from the supercritical regime towards the first-order regime, by decreasing the density of crosslinkers. In the latter case, the latent heat additionally enhances the elastocaloric response. Our results indicate that a significant elastocaloric response is present in main-chain liquid crystalline elastomers, driven by stress fields much smaller than in solid elastocaloric materials. Therefore, elastocaloric soft materials can potentially play a significant role as active cooling/heating elements in the development of new heat-management devices.
Mixed Methods Research: A Comparative Study Of MMR Conducted In The USA And Thailand
Creators: name: Jamnean Joungtrakul
name: Supharuk Aticomsuwan
name: Laddawan Someran
Publisher: name: Asian Forum on Business Education (AFBE)
Year: 2011
Subjects: Mixed Methods Research,Concurrent Triangulation,Concurrent Embedded,Concurrent Transformative,Sequential Explanatory,Sequential Exploratory,Sequential Transformative

description: 1, 4, AFBE Journal
Elicitation - word order
Creators: name: Piño Bonangué, José
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with José Piño Bonangué. Topics covered include word order with switch-reference clauses, word order with relative clauses, and reported speech.
Proper stacks
Creators: name: Prelli, Luca
Publisher: name: arXiv
Year: 2006
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14A20; 18D30, 18F10

description: We generalize the notion of proper stack introduced by Kashiwara and Schapira to the case of a general site, and we prove that a proper stack is a stack.
description: 8 pages, uses xy-pic. This is a revised version
Integral equations PS-3 and moduli of pants
Creators: name: Bogatyrev, Andrei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Complex Variables (math.CV)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 30F10, 14H15, 30E25, 45C05

description: More than a hundred years ago H.Poincare and V.A.Steklov considered a problem for the Laplace equation with spectral parameter in the boundary conditions. Today similar problems for two adjacent domains with the spectral parameter in the conditions on the common boundary of the domains arises in a variety of situations: in justification and optimization of domain decomposition method, simple 2D models of oil extraction, (thermo)conductivity of composite materials. Singular 1D integral Poincare-Steklov equation with spectral parameter naturally emerges after reducing this 2D problem to the common boundary of the domains. We present a constructive representation for the eigenvalues and eigenfunctions of this integral equation in terms of moduli of explicitly constructed pants, one of the simplest Riemann surfaces with boundary. Essentially the solution of integral equation is reduced to the solution of three transcendent equations with three unknown numbers, moduli of pants. The discreet spectrum of the equation is related to certain surgery procedure ('grafting') invented by B.Maskit (1969), D.Hejhal (1975) and D.Sullivan- W.Thurston (1983).
description: 27 pages, 13 figures
Lattice QCD constraints on the parton distribution functions of ${}^3\text{He}$
Creators: name: Detmold, William
name: Illa, Marc
name: Murphy, David J.
name: Oare, Patrick
name: Orginos, Kostas
name: Shanahan, Phiala E.
name: Wagman, Michael L.
name: Winter, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The fraction of the longitudinal momentum of ${}^3\text{He}$ that is carried by the isovector combination of $u$ and $d$ quarks is determined using lattice QCD for the first time. The ratio of this combination to that in the constituent nucleons is found to be consistent with unity at the few-percent level from calculations with quark masses corresponding to $m_π\sim 800$ MeV, extrapolated to the physical quark masses. This constraint is consistent with, and significantly more precise than, determinations from global nuclear parton distribution function fits. Including the lattice QCD determination of the momentum fraction in the nNNPDF global fitting framework results in the uncertainty on the isovector momentum fraction ratio being reduced by a factor of 2.5, and thereby enables a more precise extraction of the $u$ and $d$ parton distributions in ${}^3\text{He}$.
Ultrafast photoconductivity and terahertz vibrational dynamics in double-helix SnIP nanowires
Creators: name: Purschke, David N.
name: Pielmeier, Markus R. P.
name: Üzer, Ebru
name: Ott, Claudia
name: Jensen, Charles
name: Degg, Annabelle
name: Vogel, Anna
name: Amer, Naaman
name: Nilges, Tom
name: Hegmann, Frank A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Tin iodide phosphide (SnIP), an inorganic double-helix material, is a quasi-1D van der Waals semiconductor that shows promise in photocatalysis and flexible electronics. However, our understanding of the fundamental photophysics and charge transport dynamics of this new material is limited. Here, we use time-resolved terahertz (THz) spectroscopy to probe the transient photoconductivity of SnIP nanowire films and, with insight into the highly anisotropic electronic structure from quantum chemical calculations, measure an electron mobility as high as 280 $cm^2V^{-1}s^{-1}$. Additionally, the THz vibrational spectrum reveals a photoexcitation-induced charge redistribution that reduces the amplitude of a twisting mode of the outer SnI helix on picosecond timescales. Finally, we show that the carrier lifetime and mobility are limited by a trap density greater than $10^{18}\,cm^{-3}$. Our results provide insight into the optical excitation and relaxation pathways of SnIP and demonstrate a remarkably high carrier mobility for such a soft and flexible material.
Numerical counterparts of GRB host galaxies
Creators: name: Courty, Stephanie
name: Bjornsson, Gunnlaugur
name: Gudmundsson, Einar H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore galaxy properties in general and properties of host galaxies of gamma-ray bursts (GRBs) in particular, using N-body/Eulerian hydrodynamic simulations and the stellar population synthesis model, Starburst99, to infer observable properties. We identify simulated galaxies that have optical star formation rate (SFR) and SFR-to-luminosity ratio similar to those observed in a well-defined sample of ten host galaxies. Each of the numerical counterparts are found in catalogs at the same redshifts as the observed hosts. The counterparts are found to be low-mass galaxies, with low mass-to-light ratio, recent epoch of formation, and high ratio between the SFR and the average of the SFR. When compared to the overall galaxy population, they have colors much bluer than the high-mass star-forming galaxy population. Although their SFRs span a range of values, the specific rates of the numerical counterparts are equal to or higher than the median values estimated at the different redshifts. We also emphasize the strong relationships between the specific star formation rate (SFR) and quantities known to reflect the star formation history of galaxies, i.e. color and mass-to-light ratio: At intermediate redshift, the faintest and bluest galaxies are also the objects with the highest specific rates. These results suggest that GRB host galaxies are likely to be drawn from the high specific SFR sub-population of galaxies, rather than the high SFR galaxy population. Finally, as indicated by our catalogs, in an extended sample, the majority of GRB host galaxies is expected to have specific SFRs higher than found in the magnitude-limited sample studied here.
description: 11 pages, 11 figures. Accepted for publication in MNRAS
The Financial Inclusion Strategies for Forcibly Displaced People
Creators: name: Kangowa Chongo, Gloria Sishwashwa
name: Qutieshat, Abubaker
name: Yangailo, Tryson
Publisher: name: Economia Aziendale Online -
Year: 2023
Subjects: financial inclusion, forcibly displaced people, remittances, regulations, laws

description: Forcibly displaced persons are an issue that many countries are grappling with in the 21st century. People leave their countries for a variety of reasons; some flee because of war or a hostile environment. These people end up settling in other countries that are perceived to be at peace, or those who flee because of harsh economic conditions go to places where they perceive economic growth compared to where they came from. In this context, it is important for all countries to adopt inclusive policies if financial inclusion is to be achieved. This study examines the strategies that financial institutions should adopt to achieve financial inclusion. Forcibly displaced people face financial challenges and limited access to formal financial services. The study used a systematic literature review to identify some of the factors that contribute to the inadequate financial inclusion of refugees, including their financial instability and the tendency for remittances to be primarily associated with the informal financial sector. The relationship between refugee remittances and financial inclusion remains unclear, highlighting the need for further research in this area. The study also recommended areas for improvement to ensure that everyone in the country is financially included.
description: Economia Aziendale Online -, Vol 14, No 4 (2023): ISSUE 4/2023
Determination of QCD condensates from tau-decay data
Creators: name: Almasy, A. A.
name: Schilcher, K.
name: Spiesberger, H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have used the latest data from the ALEPH Collaboration to extract values for QCD condensates up to dimension d=12 in the V-A channel and up to dimension d=8 in the V, A and V+A channels. Performing 2- and 3-parameter fits, we obtain new results for the correlations of condensates. The results are consistent among themselves and agree with most of the previous results found in the literature.
description: 22 pages
Electronic nematic states tuned by isoelectronic substitution in bulk FeSe1-xSx
Creators: name: Coldea, Amalia I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Isoelectronic substitution is an ideal tuning parameter to alter electronic states and correlations in iron-based superconductors. As this substitution takes place outside the conducting Fe planes, the electronic behaviour is less affected by the impurity scattering experimentally and relevant key electronic parameters can be accessed. In this short review, I present the experimental progress made in understanding the electronic behaviour of the nematic electronic superconductors, FeSe1-xSx. A direct signature of the nematic electronic state is in-plane anisotropic distortion of the Fermi surface triggered by orbital ordering effects and electronic interactions that result in multi-band shifts detected by ARPES. Upon sulphur substitution, the electronic correlations and the Fermi velocities decrease in the tetragonal phase. Quantum oscillations are observed for the whole series in ultra-high magnetic fields and show a complex spectra due to the presence of many small orbits. Effective masses associated to the largest orbit display non-divergent behaviour at the nematic end point (x~0.175(5)), as opposed to critical spin-fluctuations in other iron pnictides. Magnetotransport behaviour has a strong deviation from the Fermi liquid behaviour and linear T resistivity is detected at low temperatures inside the nematic phase, where scattering from low energy spin-fluctuations are likely to be present. The superconductivity is not enhanced in FeSe1-xSx and there are no divergent electronic correlations at the nematic end point. These manifestations indicate a strong coupling with the lattice in FeSe1-xSx and a pairing mechanism likely promoted by spin fluctuations.
description: review article, 22 pages, 7 figures
Data Loss Detector: Automatically Revealing Data Loss Bugs in Android Apps
Creators: name: Riganelli, Oliviero
name: Mottadelli, Simone Paolo
name: Rota, Claudio
name: Micucci, Daniela
name: Mariani, Leonardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Android apps must work correctly even if their execution is interrupted by external events. For instance, an app must work properly even if a phone call is received, or after its layout is redrawn because the smartphone has been rotated. Since these events may require destroying, when the execution is interrupted, and recreating, when the execution is resumed, the foreground activity of the app, the only way to prevent the loss of state information is saving and restoring it. This behavior must be explicitly implemented by app developers, who often miss to implement it properly, releasing apps affected by data loss problems, that is, apps that may lose state information when their execution is interrupted. Although several techniques can be used to automatically generate test cases for Android apps, the obtained test cases seldom include the interactions and the checks necessary to exercise and reveal data loss faults. To address this problem, this paper presents Data Loss Detector (DLD), a test case generation technique that integrates an exploration strategy, data-loss-revealing actions, and two customized oracle strategies for the detection of data loss failures. DLD has been able to reveal 75% of the faults in a benchmark of 54 Android app releases affected by 110 known data loss faults. DLD also revealed unknown data loss problems, outperforming competing approaches.
description: for associated video presentation, see https://youtu.be/s6XZ7F8L3nY for associated slides, see https://www.slideshare.net/OlivieroRiganelli/oliviero-riganelli-data-loss-detector-automatically-revealing-data-loss-bugs-in-android-apps . In Proc. of the International Symposium on Software Testing and Analysis (ISSTA 2020)
Antibiotic use in neonatal care: measuring cumulative exposure in point prevalence surveys identifies high infant-level antibiotic exposure
Creators: name: Cook, Aislinn
name: Julia Bielicki
Publisher: name: Zenodo
Year: 2023

description: What was done

We looked at antibiotics that neonates received up until the final survey as part of the NeoIPC colonization feasibility assessment in 18 hospitals in 7 European countries. This is important to consider as neonates can receive antibiotics throughout a long stay in the NICU – we need to know how to measure antibiotic exposure to be able to design and evaluate antibiotic stewardship interventions.

Main take-home result

There is high use of antibiotics in neonatal units in Europe. While WHO Access group antibiotics are most commonly used, there was still high use of Watch and Reserve group antibiotics in vulnerable pre-term neonates later in their inpatient stay.

The current way we measure antibiotic use doesn’t capture repeated antibiotic exposure in long-stay infants.

What are the implications for children’s health? Will there be a follow up?

Babies who stay in hospital for a long time can be repeatedly exposed to antibiotics and are more to WHO Watch and Reserve group antibiotics.

Different methods for capturing this repeated long-term antibiotic exposure are needed. 

We will then be looking at the relationship of antibiotic exposure on colonization with bacteria over time through this and the data collected as part of the NeoDeco trial. 

Other studies may be needed to look at other relationships with antibiotic exposure and outcomes – this is beyond the scope of NeoIPC.

Other studies may be needed to improve antibiotic use (reduce exposure where it may not be necessary) – but this is beyond the scope of NeoIPC.
Conceiving the records continuum in Canada and the United States
Creators: name: Eamer-Goult, Jason Christopher
Publisher: name: University of British Columbia
Year: 2009

description: This thesis surveys the efforts made by Canadian and American records administrators, both records managers and archivists, to ensure that records are created, received, stored, used, preserved, and disposed of in a manner which is both efficient and effective. Beginning with the French Revolution and continuing to modern times, it investigates how approaches in North American archival thinking, government records programs, and applicable records legislation were often flawed because of fundamental misconceptions of the nature of the records themselves. The thesis traces how the most widely accepted approach for administering records, which called for the division of responsibilities amongst records professionals according to the records' "life status" — active, semi-active, or inactive — was incorrect because it was not compatible with the reality that records exist as a conceptual whole and are best administered in a manner which reflects this realization. The records, which should have been managed as a coherent and complete fonds of an institution, suffered from these divisions which had eventually led to the evolution of separate records occupations: those who looked after active records, called records managers, and those who handled inactive ones, labelled archivists. What was required was an "integrated" or "unified" approach such as that articulated by the Canadian archivist Jay Atherton. Like others, he called for the management of records in a manner which reflected the singular nature of the records, an approach which did not make arbitrary divisions where none existed, but instead viewed records from a wider and more complete perspective. Support for this approach amongst some records administrators was precipitated by a number of factors, not the least of which were the demands of handling information in modern society. The thesis concludes by examining what is required for the integrated ideas to be implemented as part of a practical model in today's institutions. It suggests that for the best results to be achieved, records administrators will have to learn to work with others in related information professions, or risk losing the ability to make valid contributions in the modern information age.
ISO far infrared observations of the high latitude cloud L1642. II. Correlated variations of far-infrared emissivity and temperature of "classical large" dust particles
Creators: name: Lehtinen, K.
name: Juvela, M.
name: Mattila, K.
name: Lemke, D.
name: Russeil, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Our aim is to compare the infrared properties of big, ``classical'' dust grains with visual extinction in the cloud L1642. In particular, we study the differences of grain emissivity between diffuse and dense regions in the cloud. The far-infrared properties of dust are based on large-scale 100um and 200um maps. Extinction through the cloud has been derived by using the star count method at B- and I-bands, and color excess method at J, H and Ks bands. Radiative transfer calculations have been used to study the effects of increasing absorption cross-section on the far-infrared emission and dust temperature. Dust emissivity, measured by the ratio of far-infrared optical depth to visual extinction, tau(far-IR)/A(V), increases with decreasing dust temperature in L1642. There is about two-fold increase of emissivity over the dust temperature range of 19K-14K. Radiative transfer calculations show that in order to explain the observed decrease of dust temperature towards the centre of L1642 an increase of absorption cross-section of dust at far-IR is necessary.This temperature decrease cannot be explained solely by the attenuation of interstellar radiation field. Increased absorption cross-section manifests itself also as an increased emissivity. We find that, due to temperature effects, the apparent value of optical depth tau(far-IR), derived from 100um and 200um intensities, is always lower than the true optical depth.
description: 11 pages, 9 figures. Accepted for publication in A&A
A Scalable Architecture for Coherence-Preserving Qubits
Creators: name: Weinstein, Yaakov S.
name: Hellberg, C. Stephen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose scalable architectures for the coherence-preserving qubits introduced by Bacon, Brown, and Whaley [Phys. Rev. Lett. {\bf 87}, 247902 (2001)]. These architectures employ extra qubits providing additional degrees of freedom to the system. We show that these extra degrees of freedom can be used to counter errors in coupling strength within the coherence-preserving qubit and to combat interactions with environmental qubits. The presented architectures incorporate experimentally viable methods for inter-logical-qubit coupling and can implement a controlled phase gate via three simultaneous Heisenberg exchange operations. The extra qubits also provide flexibility in the arrangement of the physical qubits. Specifically, all physical qubits of a coherent-preserving qubit lattice can be placed in two spatial dimensions. Such an arrangement allows for universal cluster state computation.
description: 4 pages, 4 figures
Infection prevention and control practices in neonatal units participating in the NeoIPC project
Creators: name: Schlaeppi, Chloé
name: Bielicki, Julia
Publisher: name: Zenodo
Year: 2023
Subjects: infection prevention and control
IPC core components
neonatal intensive care unit

description: Introduction

The EU Horizon 2020 funded project NeoIPC aims to identify and implement effective infection prevention and control (IPC) interventions for neonatal intensive care units (NICUs). 

Methods

A standardized questionnaire on IPC practices was answered by each NICU participating in the NeoIPC colonization assessment study. The study is still active and expected to be concluded in 2023. The IPC questions were mapped to the IPC Assessment Framework (IPCAF) corresponding to the core components 1 (IPC programmes), 2 (guidelines), 3 (training), 4 (surveillance) and 6 (audits). In addition, the questionnaire included neonatology-specific infection prevention aspects, such as feeding practices, which are not part of the IPCAF.

Results

By November 2022, 16 European sites in seven countries and one South African site had completed the standardized questionnaire on IPC practices. 

Most questions belonged to core components 2 (IPC guidelines) and 4 (surveillance of health-care-associated infections - HAIs). For the first of these, 11/17 sites reported having a neonatal department unit-specific IPC guidance and all of them made it available to NICU clinical staff. Regarding the prevention of central-line associated infections (CLABSI) 15/17 sites provided guidance for preparation of intravenous fluids, medications and parenteral nutrition. Guidance for peripheral and central lines were available in 13/17 and 14/17 sites respectively. In contrast, only 11/17 sites had SOPs for cleaning of incubators, non-invasive and invasive ventilators.

For core component 4, all sites were routinely collecting data on hand hygiene, HAIs and resistant bacterial colonization. All but one site had data for CLABSI rates, while data on bloodstream infections and clinically suspected sepsis rates were only reported in 13/17 and 10/17 respectively.  Screening of neonates for multidrug-resistant bacteria occurs in 65% to 76%, depending on the pathogen.  Surveillance data was shared with the unit staff in 14/17 sites. 

Conclusion

IPC practice implementation varied across NICUs and was lower for neonatology-specific practices, such as surveillance of culture negative sepsis. The results demonstrate the challenges to map, plan and implement IPC interventions in the setting of NICUs.
Emerging Holography
Creators: name: Erlich, Joshua
name: Kribs, Graham D.
name: Low, Ian
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We rederive AdS/CFT predictions for infrared two-point functions by an entirely four dimensional approach, without reference to holography. This approach, originally due to Migdal in the context of QCD, utilizes an extrapolation from the ultraviolet to the infrared using a Pade approximation of the two-point function. We show that the Pade approximation and AdS/CFT give the same leading order predictions, and discuss including power corrections such as those due to condensates of gluons and quarks in QCD. At finite order the Pade approximation provides a gauge invariant regularization of a higher dimensional gauge theory in the spirit of deconstructed extra dimensions. The radial direction of anti-de Sitter space emerges naturally in this approach.
description: 19 pages, 1 figure; v2: references and minor corrections added. now 20 pages; v3: derivation of Jacobi polynomials clarified as well as simplified. version to appear on PRD
KAM-Stability for Conserved Quantities in Finite-Dimensional Quantum Systems
Creators: name: Burgarth, Daniel
name: Facchi, Paolo
name: Nakazato, Hiromichi
name: Pascazio, Saverio
name: Yuasa, Kazuya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that for any finite-dimensional quantum systems the conserved quantities can be characterized by their robustness to small perturbations: for fragile symmetries small perturbations can lead to large deviations over long times, while for robust symmetries their expectation values remain close to their initial values for all times. This is in analogy with the celebrated Kolmogorov-Arnold-Moser (KAM) theorem in classical mechanics. To prove this remarkable result, we introduce a resummation of a perturbation series, which generalizes the Hamiltonian of the quantum Zeno dynamics.
description: 13 pages, 3 figures. Corrected typo in author name and added arXiv link to reference [16]
Antibiotic use in neonatal care: measuring cumulative exposure in point prevalence surveys identifies high infant-level antibiotic exposure
Creators: name: Cook, Aislinn
Publisher: name: Zenodo
Year: 2023

description: Introduction: 
Infants who remain on neonatal units for extended periods of time may be repeatedly exposed to antibiotics. Understanding patient-level antibiotic use throughout their stay is important to design/evaluate antibiotic stewardship interventions and assess neonatal outcomes related to antibiotic exposure. Standard point prevalence surveys (PPS) cannot capture repeated treatment and may underestimate true antibiotic exposure; however, cumulative (longitudinal) antibiotic measurement incorporated into PPS could provide comprehensive data on antibiotic utilization. We aimed to investigate the added value of integrating cumulative data collection into standard PPS.
 
Methods: 
The NeoIPC colonisation feasibility assessment was set up to inform the design of a cluster randomised trial (NeoDECO). 18 neonatal units in 7 European countries conducted four surveys 4, 7 and 14 days apart; antibiotic use data captured included those ongoing at the time of each survey (PPS), those received from admission to neonatal unit up to first survey (cumulative), those received in between each survey (cumulative).
 
Results:
653 infants participated in at least one survey. Of these, 422/653 (64.6%) received at least one course of antibiotics since admission to the neonatal unit (median 4 courses, IQR:2-7). The median gestational age and birthweight was comparable between those who never received antibiotics and those receiving at least one course of antibiotics (36 weeks (IQR:33-38) and 33 weeks (IQR:29-38) and 2435g (IQR:1801-3257g) and 2010g (IQR:1140-3130g) respectively). Infants received 102 different antibiotic regimens; the most common were ampicillin+gentamicin, gentamicin, meropenem+vancomycin and vancomycin. Patterns of use differed by gestational age and postnatal age (Figure). At the time of each survey (PPS), 25% of infants were receiving active antibiotics. 
 
Conclusion
2/3 infants in high technology neonatal units in Europe are exposed to antibiotics during their stay. The most used antibiotics in this setting are from the WHO AWaRe Access group; however, Watch and Reserve group agent use is high among the most vulnerable preterm patients and tends to occur later on during inpatient stay. Traditional PPS largely fail to capture repeated exposures and therefore misrepresent antibiotic exposure for long-stay preterm infants in quantity & quality. These findings are likely relevant to repeatedly exposed populations (e.g. adults in long term care facilities) and settings with multimodal distributions of length of stay.
Spin-1 chain with spin-1/2 excitations in the bulk
Creators: name: Sen, Diptiman
name: Surendran, Naveen
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a spin-1 chain with a Hamiltonian which has three exactly solvable ground states. Two of these are fully dimerized, analogous to the Majumdar-Ghosh (MG) states of a spin-1/2 chain, while the third is of the Affleck-Kennedy-Lieb-Tasaki (AKLT) type. We use variational and numerical methods to study the low-energy excitations which interpolate between these ground states in different ways. In particular, there is a spin-1/2 excitation which interpolates between the MG and AKLT ground states; this is the lowest excitation of the system and it has a surprisingly small gap. We discuss generalizations of our model of spin fractionalization to higher spin chains and higher dimensions.
description: 7 pages including 4 figures; this is the published version of the paper
Statistical properties of habitable zones in stellar binary systems
Creators: name: Simonetti, Paolo
name: Vladilo, Giovanni
name: Silva, Laura
name: Sozzetti, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations of exoplanets and protoplanetary disks show that binary stellar systems can host planets in stable orbits. Given the high binary fraction among stars, the contribution of binary systems to Galactic habitability should be quantified. Therefore, we have designed a suite of Monte Carlo experiments aimed at generating large (up to $10^6$) samples of binary systems. For each system randomly extracted we calculate the intersection between the radiative habitable zones and the regions of dynamical stability using published empirical formulations that account for the dynamical and radiative parameters of both stars of the system. We also consider constraints on planetary formation in binary systems. We find that the habitability properties of circumstellar and circumbinary regions are quite different and complementary with respect to the binary system parameters. Circumbinary HZs are, generally, rare ($\simeq 4\%$) in the global population of binary systems, even if they are common for stellar separations $\lesssim 0.2$ AU. Conversely, circumstellar HZs are frequent ($\ge 80\%$) in the global population, but are rare for stellar separations $\lesssim 1$ AU. These results are robust against variations of poorly constrained binary systems parameters. We derive ranges of stellar separations and stellar masses for which HZs in binary systems can be wider than the HZs around single stars; the widening can be particularly strong (up to one order of magnitude) for circumstellar regions around M-type secondary stars. The comparison of our statistical predictions with observational surveys shows the impact of selection effects on the habitability properties of detected exoplanets in binary systems.
description: 39 pages and 12 figures. Accepted for publication in ApJ
Evidence for charmonium generation at the phase boundary in ultra-relativistic nuclear collisions
Creators: name: Andronic, A.
name: Braun-Munzinger, P.
name: Redlich, K.
name: Stachel, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the transition from suppression to enhancement of J/psi mesons produced in ultra-relativistic nuclear collisions in the framework of the statistical hadronization model. The calculations are confronted with the most recent data from the RHIC accelerator. This comparison yields first direct evidence for generation of J/psi mesons at the phase boundary. Based on the success of this approach we make specific predictions for LHC energy.
description: 5 pages, 2 figures; final version accepted for publication in Phys. Lett. B (Fig.1 containd a new set of calculations)
Elicitation - word order
Creators: name: Sampi Ríos, Celia
name: Clem, Emily
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024
Subjects: subject: amc

description: This bundle contains recordings and associated notes from an elicitation session conducted by Emily Clem with Celia Sampi Ríos. Topics covered include word order with switch-reference clauses, word order with relative clauses, reported speech, and word order with complex nominals.
Tailoring the photovoltaic effect in (111) oriented BiFeO3/LaFeO3 superlattices
Creators: name: Belhadi, J.
name: Yousfi, S.
name: Marssi, M. El
name: Arnold, D. C.
name: Bouyanfif, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ferroelectric and photovoltaic properties of BiFeO3/LaFeO3 superlattices grown by pulsed laser deposition have been investigated being the bilayer thickness). For a high concentration of BiFeO3 a ferroelectric state is observed simultaneously with a switchable photovoltaic response. In contrast for certain concentration of LaFeO3 a non-switchable photovoltaic effect is evidenced. Such modulation of the PV response in the superlattices is attributed to the ferroelectric to paraelectric phase transition which is controlled with the increase of x. Remarkably, concomitant to this change of PV mechanism, a change of the conduction mechanism also seems to take place from a bulk-limited to an interface-limited transport as x increases.
description: 13 Pages, 6 Figures
Microphysics of Water Clouds in the Atmospheres of Y Dwarfs and Temperate Giant Planets
Creators: name: Mang, James
name: Gao, Peter
name: Hood, Callie E.
name: Fortney, Jonathan J.
name: Batalha, Natasha
name: Yu, Xinting
name: de Pater, Imke
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Water clouds are expected to form on Y dwarfs and giant planets with equilibrium temperatures near or below that of Earth, drastically altering their atmospheric compositions and their albedos and thermal emission spectra. Here we use the 1D Community Aerosol and Radiation Model for Atmospheres (CARMA) to investigate the microphysics of water clouds on cool substellar worlds to constrain their typical particle sizes and vertical extent, taking into consideration nucleation and condensation, which have not been considered in detail for water clouds in H/He atmospheres. We compute a small grid of Y dwarf and temperate giant exoplanet atmosphere models with water clouds forming through homogeneous nucleation and heterogeneous nucleation on cloud condensation nuclei composed of meteoritic dust, organic photochemical hazes, and upwelled potassium chloride cloud particles. We present comparisons with the Ackerman & Marley parameterization of cloud physics to extract the optimal sedimentation efficiency parameter (f$_{sed}$) using Virga. We find that no Virga model replicates the CARMA water clouds exactly and that a transition in f$_{sed}$ occurs from the base of the cloud to the cloud top. Furthermore, we generate simulated thermal emission and geometric albedo spectra and find large, wavelength-dependent differences between the CARMA and Virga models, with different gas absorption bands reacting differently to the different cloud distributions and particularly large differences in the M band. Therefore, constraining the vertically-dependent properties of water clouds will be essential to estimating the gas abundances in these atmospheres.
description: 10 pages, 8 figures, published to ApJ
Q & A Experiment to Search for Vacuum Dichroism, Pseudoscalar-Photon Interaction and Millicharged Fermions
Creators: name: Chen, Sheng-Jui
name: Mei, Hsien-Hao
name: Ni, Wei-Tou
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A number of experiments are underway to detect vacuum birefringence and dichroism -- PVLAS, Q & A, and BMV. Recently, PVLAS experiment has observed optical rotation in vacuum by a magnetic field (vacuum dichroism). Theoretical interpretations of this result include a possible pseudoscalar-photon interaction and the existence of millicharged fermions. Here, we report the progress and first results of Q & A (QED [quantum electrodynamics] and Axion) experiment proposed and started in 1994. A 3.5-m high-finesse (around 30,000) Fabry-Perot prototype detector extendable to 7-m has been built and tested. We use X-pendulums and automatic control schemes developed by the gravitational-wave detection community for mirror suspension and cavity control. To polarize the vacuum, we use a 2.3-T dipole permanent magnet, with 27-mm-diameter clear borehole and 0.6-m field length,. In the experiment, the magnet is rotated at 5-10 rev/s to generate time-dependent polarization signal with twice the rotation frequency. Our ellipsometer/polarization-rotation-detection-system is formed by a pair of Glan-Taylor type polarizing prisms with extinction ratio lower than 10-8 together with a polarization modulating Faraday Cell with/without a quarter wave plate. We made an independent calibration of our apparatus by performing a measurement of gaseous Cotton-Mouton effect of nitrogen. We present our first experimental results and give a brief discussion of our experimental limit on pseudo-scalar-photon interaction and millicharged fermions.
description: 21 pages, 13 figures, submitted to Modern Physics Letters
Development and evaluation of an interface pressure transducer for biomedical applications
Creators: name: Paris-Seeley, Nancy J.
Publisher: name: University of British Columbia
Year: 2009

description: The measurement of the interface pressure between a biomedical device and part of the human body is useful to aid in the design or improve the performance and safety of such devices. Therefore, a need exists for a transducer to measure interface pressure in these applications. The development and evaluation of an interface pressure transducer was the main goal of this research. Surgical retraction, surgical tourniquets and mammography were selected as demonstration applications for the developed transducer. These target applications were selected because they represented a wide spectrum of device and tissue characteristics and properties, and were in common use. A review of the available clinical, commercial and engineering literature identified a wide range of transducers and transducer technologies used for interface pressure measurement. The transducers included pneumatic/hydraulic, fibre-optic, strain based, capacitive and micromachined technologies. No standard method of measuring interface pressure was described and, in many cases, investigators cautioned against comparing-interface pressure measurements obtained using different measurement systems. From this review and an examination of the biomedical applications mentioned, the design criteria and optimal design specifications for an interface pressure transducer were defined. To gain a better understanding of the mechanical response of the interface between a device, transducer, and tissue to an applied loading, a preliminary finite element model was developed and studied. The model demonstrated the potential for shear stresses to develop between the transducer and interface materials. Furthermore a calibration system which simulated interface conditions was developed to evaluate both existing and developed transducers for use as interface pressure transducers. This evaluation demonstrated the lack of a transducer whose output was independent of the compliance of the interface materials. As well, an essential characteristic was identified for an effective interface pressure transducer that could be used in several applications where the interface material compliance was different. Based on the knowledge gained from the finite element analysis and existing transducer evaluation results, a novel interface pressure transducer was developed and evaluated both in the calibration system and via demonstration applications of surgical retraction and tourniquets. Under laboratory conditions in the calibration system, the transducer met many of the desired design specifications. The transducer was tested in the lab under both pneumatic and nonpneumatic tourniquet cuffs. The transducer worked well under the pneumatic cuff but required ] further development for use under the non-pneumatic cuff. The transducer was also integrated into a surgical retractor and evaluated in five clinical trials. It met many of the desired specifications for this application.
The Influence of Absorptive Capacity, Communication Competency, Source Credibility, Technology Capability and Knowledge Transfer on Performance
Creators: name: Nuanlaong Attharangsun
Publisher: name: Asian Forum on Business Education (AFBE)
Year: 2011
Subjects: absorptive capacity,communication competency source credibility,technology capability,Knowledge transfer

description: 2, 4, AFBE Journal