cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Z Extremization in Chiral-Like Chern Simons Theories
Creators: name: Amariti, Antonio
name: Siani, Massimo
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the localized free energy on S^3 of three-dimensional N=2 Chern-Simons matter theories at weak coupling. We compute the two loop R charge in three different ways, namely by the standard perturbative approach, by extremizing the localized partition function at finite N and by applying the standard saddle point approximation for large N. We show that the latter approach does not reproduce the expected result when chiral theories are considered. We circumvent these problems by restoring a reflection symmetry on the eigenvalues in the free energy. Thanks to this symmetrization we find that the three methods employed agree. In particular we match the computation for a model whose four dimensional parent is the quiver gauge theory describing D3 branes probing the Hirzebruch surface. We conclude by commenting on the application of our results and to the strong coupling regime.
description: 20 pages, 1 figure, using jheppub.sty
Stellar clustering and the kinematics of stars around Collinder 121 using Gaia DR3
Creators: name: Fleming, Graham D.
name: Kirk, Jason M.
name: Ward-Thompson, Derek
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: We study the region around Collinder 121 (Cr 121) using newly available 6-dimensional data from the Gaia DR3 catalogue. Situated in the third quadrant, near the galactic plane, Collinder 121 lies in the region of Canis Major centred around l = 236 degrees, b = -10 degrees. Previous studies have suggested that the stellar associations in this region comprise an OB association (CMa OB2) lying at about 740 pc with a more distant open cluster (Cr 121) at approximately 1170 pc. Despite these studies, the precise nature of Collinder 121 remains uncertain. This study investigates the region bounded by the box l = 225 to 245 degrees, b = 0.00 to -20.00 degrees to a depth of 700 pc from 500 to 1200 pc which fully encompasses the region discussed in the literature. Using Gaia DR3 data, we do not find associations at the distances given in the literature. Instead, using the HDBSCAN machine learning algorithm, we find a major association of OB stars centred around 803 pc. Within this association we find four smaller subgroups that may be indicative of a larger association and which are located at a mean distance of 827 pc. Proper motion studies find coherence between these four subgroups and show a distinctive east to west increase in the size of the velocity vectors which supports contemporary studies that show similar trends in OB populations in Cygnus and within the Carina spiral Arm. Therefore, we hypothesize that Cr 121 and CMa OB2 are the same cluster, consistent with the 1977 study by Hoogerwerf.
Individual project on theme "Myotis K." (MOOC: CompTech in biology)
Creators: name: Северина Виктория Андреевна
Publisher: name: Zenodo
Year: 2020
Subjects: Myotis
Siberia
Map
Gene

description: Данный кейс является результатом реализации индивидуального проекта Севериной Виктории по теме "Myotis K." в рамках онлайн курса "Компьютерные технологии в биологии" (автор – А.В. Ваганов) (https://stepik.org/course/60859/promo)
Analytical investigation of modulated spin torque oscillators in the framework of coupled differential equations with variable coefficients
Creators: name: Iacocca, Ezio
name: Åkerman, Johan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Modulation of Spin Torque Oscillators (STOs) is investigated by analytically solving the time-dependent coupled equations of an auto-oscillator. A Fourier series solution is proposed, leading to the coefficients being determined with a linear set of equations, from which a Nonlinear Amplitude and Frequency Modulation (NFAM) scheme is obtained. In this framework, the NFAM features are related to the intrinsic STO parameters, revealing a frequency-dependence of the harmonic-dependent modulation index that allows a modulation bandwidth to be defined for these devices. The presented results expose a rich parameter space, where the modulation and the STO's operation conditions define the observed modulation features. The Fourier-series representation of the time signal is suitable for studying periodic perturbations on the auto-oscillator equation.
The mitigation of primary blast injury
Creators: name: Magnus, Danyal
Publisher: name: Imperial College London
Year: 2020

description: While effective against penetrating threats, ballistic armour may not mitigate primary blast injuries inflicted by the pressure wave. It remains poorly understood whether such armour improves blast clinical outcome for the wearer. The aim of this work was to deepen understanding of the nature of modern primary blast injuries, potential materials appropriate for personal blast protection and the influence of hard ballistic plates on expected survivability. The modern prevalence and severity of blast in the civilian environment was investigated by carrying out a meta-analysis of injured populations. The occurrence of primary blast injuries strongly depends on the ventilation of the attack environment. As the rate of pulmonary injury for Improvised Explosive Device attacks is approximately 9%, it is apparent that the blast attenuating capability of thoracic armour is of importance. The blast mitigation performance of polyurethane-based foams, hydrogels and a hard ballistic plate were assessed using a shock tube. The foams and hydrogels were manufactured and mechanically characterised across strain rates from 0.01–1600/s covering regimes relevant to both load-bearing and blast loading scenarios. While reticulated polyurethane foam enhanced the peak blast pressure, the hydrogels dissipated blast energy through brittle fracture. A ballistic gelatine human thorax surrogate was used to evaluate the clinical significance of the mitigation, and the blast loading of the gelatine computationally modelled. The hydrogels yielded a 90% reduction of peak pressure compared to the unarmoured case, comparable to values reported for water-based mitigation systems. By comparison, the addition of a ballistic plate with zero air gap increased lethality from values up to 50% in the unarmoured case to values up to 99%. Under the highest amplitude and duration blast loading, this corresponded to an increase of the delivered peak pressure and impulse to the surrogate of 52% and 27%, respectively, compared to the unarmoured case. Introduction of an air gap between the surrogate and armour further increased the lethality risk to near 99% over the full range of loading conditions due to blunt impact of the plate. However, mitigation could be achieved by combining the ballistic plate with a reticulated foam backing layer greater than a critical thickness.
Video Upload From Public Transport Vehicles Using Multihomed Systems
Creators: name: Safari Khatouni, Ali
name: Ajmone Marsan, G Marco
name: Mellia, Marco
Publisher: name: Zenodo
Year: 2016

description: We consider a surveillance system for public transport vehicles, which is based on the collection of on-board videos, and the upload via mobile network to a central security system of video segments corresponding to those cameras and time intervals involved in an accident. We assume that vehicles are connected to several wireless interfaces, provided by different Mobile Network Operators (MNOs), each charging a different cost. Both the cost and the upload rate for each network interface change over time, according to the network load and the position of the vehicle. When a video must be uploaded to the central security, the system has to complete the upload within a deadline, deciding i) which interface(s) to use, ii) when to upload from that interface(s) and iii) at which rate to upload. The goal is to minimize the total cost of the upload, which we assume to be proportional to the data volume being transmitted and to the cost of using a given interface. We formalize the optimization problem and discuss greedy heuristics to solve it. Then, we discuss scientific and technical challenges to solve the system.
description: 2016 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS): Student Activities - Student Activities
title: Tranexamic acid in trauma care : who should be treated, when and where?
Creators: name: Ageron, F-X D
Publisher: name: London School of Hygiene & Tropical Medicine
Year: 2021

description: Introduction: Early tranexamic acid (TXA) treatment reduces bleeding deaths in trauma patients. Guidelines recommend the use of TXA for trauma patients who are bleeding or who are at risk of significant haemorrhage within 3 hours of the injury. However, many trauma patients who might benefit from TXA are either not treated or not treated soon enough. Early identification of haemorrhage is challenging and could explain this poor implementation. The purpose of the thesis is to determine who should be treated, when and where. Methods: First, I developed and validated a prognostic model to predict traumatic death due to bleeding using multivariate logistic regression. Second, I conducted an IPD meta-analysis of randomised trials to assess whether the effectiveness of TXA varies by baseline risk of death due to bleeding. Third, I assessed the health impact of TXA treatment in terms of deaths avoided using the Trauma Audit and Research Network registry. Finally, I developed and validated a simple score (BATT score) that could be used by paramedics to identify patient sat risk of haemorrhage and suggested treatment criteria that maximise the number of deaths avoided with TXA. Results: The relative risk reduction with TXA did not appear to vary by baseline risk. Treating all major trauma patients prior to hospital arrival avoided more deaths and with a lower number needed to treat than with in-hospital treatment. The BATT score had a high discrimination (C-stat=0.90; 95%confidence interval 0.89-0.91). Treating patients with a BATT score ≥2 (60% of major trauma patients)would allow to avoid many deaths compared to current practice. Conclusion : TXA should be given at the scene of the injury. It should be administered to a wide range of trauma patients and not only restricted to the most severely injured. A BATT score≥2 represents a simple guidance for paramedics to initiate TXA treatment.
title: Analoge Objekte, digitale Ausstellungen – Neue Wege für die Präsentation universitärer Sammlungen. Ein Werkstattbericht
Creators: name: Eck, Katharina
name: Kaiser, Lydia
Publisher: name: Philipps-Universität Marburg
Year: 2020
Subjects: Library and information sciences
Bibliotheks- und Informationswissenschaft

description: Wie auch andere Universitäten verfügt die Philipps-Universität Marburg über wissenschaftliche Sammlungen, zum Teil mit unikalem Charakter. Sie stärker sichtbar und für Forschung und Lehre weiter nutzbar zu machen, ist eine der zentralen Aufgaben des „Arbeitskreises Sammlungen“. Angesichts knapper personeller und finanzieller Ressourcen liegt der Schritt ins Digitale nahe: Bessere Zugänglichkeit, digitale Erschließungsmethoden und neue Vermittlungsoptionen werden möglich. Im Kontext der in Marburg nun von 2020 auf 2021 verschobenen Sammlungstagung der Gesellschaft für Universitätssammlungen e.V. (GfU) unter dem Motto „Digitales Kuratieren“ wurde eine Ausstellung konzipiert, die eine flexible und zugleich nachhaltige physische und digitale Präsentation von Sammlungsgegenständen in unterschiedlichen Sinnzusammenhängen ermöglicht. Wie sieht das Konzept aus, welche technischen Umsetzungen für die digitale Präsentation wurden gewählt, wie können die Ergebnisse des Projekts in zukünftige Dienstleistungsangebote der Universitätsbibliothek für Forschung, Lehre und Wissensvermittlung einfließen?
Femtoscopic correlation measurement with symmetric Lévy-type source at NA61/SHINE
Creators: name: Porfy, Barnabas
Publisher: name: arXiv
Year: 2023
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Measuring quantum-statistical, femtoscopic (including final state interactions) momentum correlations with final state interactions in high-energy nucleus-nucleus collisions reveal the space-time structure of the particle-emitting source created. In this paper, we report NA61/SHINE measurements of femtoscopic correlations of identified pion pairs and describe said correlations based on symmetric Lévy-type sources in Ar+Sc collisions at 150A GeV/c. We investigate the transverse mass dependence of the Lévy-type source parameters and discuss their possible interpretations.
description: 10 pages, 5 figures, proceedings of the 22nd Zimanyi School Winter Workshop on Heavy Ion Physics, Budapest, Hungary, December 5 - 9, 2022, submitted to the MDPI Universe special issue "Zim\'anyi School - Heavy Ion Physics"
Report from the Embargo Workgroup
Creators: name: Campbell, Glenorchy
name: Gordon, Gregg
name: Helmuth, Laura
name: Kingsley, Danny
name: Massant, Eric
name: McCulloch, Audrey
name: McMillan, Gail
name: Peatfield, Tony
name: Riley, Ann
name: Schweitzer, Will
name: Webster, Keith
Publisher: name: Open Scholarship Initiative Proceedings
Year: 2016

description: The Embargo Working Group began by defining â€œembargo,â€ encapsulating it into four main types and then focusing on the post-publication and subscription embargoes. Among other things, we discussed the dispersed nature of usage metrics and their possible impact on the duration of embargoes. This, in part, led us to recognize the lack of an evidence on which to base decisions surrounding the need for embargoes and their duration. Therefore, we focused on what it would take to address the key issue: â€˜What are the impacts of embargoes on scholarly communication?â€™ We concluded by considering how to fund a global survey of key stakeholders and what data the survey should collect in order to provide data about the issues surrounding embargoes.
OSI2016 Workshop Question
In an information system where so much information is destined for subscription journals, the assumption has been that embargos allow publishers time to recoup their investments, and also allow the press time to prepare news articles about research. Is this assumption warranted? Why or why not? Is the public interest being served by embargos? What about by embargos on federally-funded research? Are there any facts or options that havenâ€™t yet been considered to address the concerns animating the embargo solution?
description: Open Scholarship Initiative Proceedings, 2016
Workshop : "3D UNDERWATER MAPPING OF HABITATS AND BIOLOGICAL COMMUNITIES" - Geohab 2023 conference
Creators: name: Urbina-Barreto, Isabel
name: Van Audenhaege, Loïc
name: Prince, David
name: Mahamadaly, Vincent
name: Delson, Simon
name: Snessens, Alexandre
name: Delamare, Clément
name: Danet, Valentin
name: Iason-Zois Gazis
Publisher: name: Zenodo
Year: 2023
Subjects: photogrammetry, mapping, communities, enviroments, habitat, Geohab

description: Program and presentations (pdf) - Geohab workshop: "3D UNDERWATER MAPPING OF HABITATS AND BIOLOGICAL COMMUNITIES" 3d models and pictures - Hands on session Ambiance pictures
A novel electrophoretic mechanism and separation parameter for selective nucleic acid concentration based on synchronous coefficient of drag alteration (SCODA)
Creators: name: Pel, Joel
Publisher: name: University of British Columbia
Year: 2009

description: Molecular manipulation and separation techniques form the building blocks for much of fundamental science, yet many separation challenges still remain, in fields as diverse as forensics and metagenomics. This thesis presents SCODA (Synchronous Coefficient of Drag Alteration), a novel and general molecular separation and concentration technique aimed at addressing such challenges. SCODA takes advantage of physical molecular properties associated with the non‐linear response of long, charged polymers to electrophoretic fields, which define a novel parameter for DNA separation. The SCODA method is based on superposition of synchronous, time-varying electrophoretic fields, which can generate net drift of charged molecules even when the time-averaged molecule displacement generated by each field individually is zero. Such drift can only occur for molecules, such as DNA, whose motive response to electrophoretic fields is non-linear. This thesis presents the development of SCODA for extraction of DNA, and outlines the design of the instrumentation required to achieve the SCODA effect. We then demonstrate the selectivity, efficiency, and sensitivity of the technique. Contaminant rejection is also quantified for humic acids and proteins, with SCODA displaying excellent performance compared to existing technologies. Additionally, the ability of this technology to extract high molecular weight DNA is demonstrated, as is its inherent fragment length selection capability. Finally, we demonstrate two applications of this method to metagenomics projects where existing technologies performed poorly or failed altogether. The first is the extraction of high molecular weight DNA from soil, which is limited in length to fragments smaller than 50 kb with current direct extraction methods. SCODA was able to recover DNA an order of magnitude larger than this. The second application is DNA extraction from highly contaminated samples originating in the Athabasca tar sands, where existing technology had failed to recover any usable DNA. SCODA was able to recover sufficient DNA to enable the discovery of 200 putatively novel organisms.
A simple pendulum: Obtaining motion of pendulum bob from string tension time series
Creators: name: Viridi, Sparisoma
name: Khotimah, Siti Nurul
Publisher: name: arXiv
Year: 2011
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Time series of string tension of a simple pendulum has not yet been a interesting motion information, even nowadays using a force tension sensor can be measured easily. A numerical procedure is presented how to obtain motion of pendulum bob from the string tension. Unfortunately, proposed procedure does not work. A quadratic term of ωloses the sign of ωthat prevents the procedure to work. Applying sign of string tension into the procedure can produce the time series but only in positive value. The error for reproduced angular displacement is about 7.6%.
description: 10 pages, 7 figures, to be submitted to Jurnal Matematika dan Sains
Obliquity of the Galilean satellites: The influence of a global internal liquid layer
Creators: name: Baland, R. -M.
name: Yseboodt, M.
name: Van Hoolst, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The obliquity of the Galilean satellites is small but not yet observed. Studies of cycloidal lineaments and strike-slip fault patterns on Europa suggest that Europa's obliquity is about 1 deg, although theoretical models of the obliquity predict the obliquity to be one order of magnitude smaller for an entirely solid Europa. Here, we investigate the influence of a global liquid layer on the obliquity of the Galilean satellites. Io most likely has a fully liquid core, while Europa, Ganymede, and Callisto are thought to have an internal global liquid water ocean beneath an external ice shell. We use a model for the obliquity based on a Cassini state model extended to the presence of an internal liquid layer and the internal gravitational and pressure torques induced by the presence of this layer. We find that the obliquity of Io only weakly depends on the different internal structure models considered, because of the weak influence of the liquid core which is therefore almost impossible to detect through observations of the obliquity. The obliquity of Europa is almost constant in time and its mean value is smaller (0.033-0.044 deg) with an ocean than without (0.055 deg). An accuracy of 0.004 deg (about 100 m on the spin pole location at the surface) would allow detecting the internal ocean. The obliquity of Ganymede and Callisto depends more on their interior structure because of the possibility of resonant amplifications for some periodic terms of the solution. Their ocean may be easily detected if, at the measuring time, the actual internal structure model lead to a very different value of the obliquity than in the solid case. A long-term monitoring of their shell obliquity would be more helpful to infer information on the shell thickness.
description: 27 pages, 6 tables, 7 figures
How Diversification Helps Preventing the Food Crisis?
Creators: name: Andika Julian Trilaksana
name: Fawzi, Nurul Ihsan
name: Qurani, Ika Zahara
Publisher: name: figshare
Year: 2020
Subjects: subject: 150401 Food and Hospitality Services
subject: FOS: Economics and business

description: For months, the global food supply chains are being disrupted due to the Covid-19 pandemic. The situation has occurred since the lockdown regulation to contain the SARS-CoV-2 virus has been put in place. It limits people and goods mobility across regions or countries. Disruption on distribution hindered food producers to distribute the harvest to consumers. The immediate impacts are food stock depletion in some areas, while others experiencing undistributed food abundance that inevitably is wasted. In the regions where food stock is declining, food prices continue to rise and vice versa.
The Virtual Reality Conjecture
Creators: name: Whitworth, Brian
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We take our world to be an objective reality, but is it? The assumption that the physical world exists in and of itself has struggled to assimilate the findings of modern physics for some time now. For example, an objective space and time would just "be", but in relativity, space contracts and time dilates. Likewise objective "things" should just inherently exist, but the entities of quantum theory are probability of existence smears, that spread, tunnel, superpose and entangle in physically impossible ways. Cosmology even tells us that our entire physical universe just "popped up", from nowhere, about 14 billion years ago. This is not how an objectively real world should behave! Yet traditional alternatives don't work much better. That the world is just an illusion of the mind doesn't explain its consistent realism and Descartes dualism, that another reality beyond the physical exists, just doubles the existential problem. It is time to consider an option we might normally dismiss out of hand. This essay explores the virtual reality conjecture, that the physical world is the digital output of non-physical quantum processing. It finds it neither illogical, nor unscientific, nor incompatible with current physics. In this model, quantum entities are programs, movement is the transfer of processing, interactions are processing overloads and the fields of physics are network properties. It has no empty space, no singularities and all the conservations of physics just conserve processing. Its prediction, that the collision of high frequency light in a vacuum can create permanent matter, will test it. If the physical world has the properties of a processing output, physics must rewrite the story behind its equations.
description: This paper was developed from the fourth prize FQXi 2011 essay submission Exploring the virtual reality conjecture. It summarizes three chapters of a larger work with detail from a fourth chapter, in preparation. Annex A was composed from the ensuing FQXi essay discussion
The variable stars in the field of NGC 6139: A critical approach to their reddening and membership
Creators: name: Yepez, M. A.
name: Ferro, A. Arellano
name: Fierro, I. Bustos
name: Luna, A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a CCD $VI$ time-series analysis of the globular cluster NGC 6139 and its variable star population. Using the astrometric data available in $Gaia$-DR3 we performed a membership analysis that enabled the construction of a clean Colour-Magnitude Diagram (CMD). Variable stars in the field of the cluster reported by $Gaia$-DR3 and newly discovered ones in this paper are classified and their membership is critically evaluated. We report two cluster member RRc (V12, V15) and four SR (V13, V14, V17, V18) not previously detected and assign variable names to V11 and V16 detected by $Gaia$ as they proof to be cluster members. Light curves and periods for non-member $Gaia$ eclipsing binaries, semi regular variables and newly detected RR Lyrae stars are provided. Fourier decomposition of the light curves of the cluster member RRab and RRc stars leads to the values [Fe/H]=$-1.63$ dex, and distance of 9.63$\pm$0.68 kpc. The Oosterhoff type II nature of the cluster is confirmed. We adopted the mean reddening $E(B-V)$=0.786 mag and performed a differential reddening analysis based on the dispersion of the red giant branch. The differential map allowed a mild correction of the CMD.
description: 12 pages, 10 figures, 5 tables
Quasispecies dynamics with network constraints
Creators: name: Barbosa, Valmir C.
name: Donangelo, Raul
name: Souza, Sergio R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: A quasispecies is a set of interrelated genotypes that have reached a situation of equilibrium while evolving according to the usual Darwinian principles of selection and mutation. Quasispecies studies invariably assume that it is possible for any genotype to mutate into any other, but recent finds indicate that this assumption is not necessarily true. Here we revisit the traditional quasispecies theory by adopting a network structure to constrain the occurrence of mutations. Such structure is governed by a random-graph model, whose single parameter (a probability p) controls both the graph's density and the dynamics of mutation. We contribute two further modifications to the theory, one to account for the fact that different loci in a genotype may be differently susceptible to the occurrence of mutations, the other to allow for a more plausible description of the transition from adaptation to degeneracy of the quasispecies as p is increased. We give analytical and simulation results for the usual case of binary genotypes, assuming the fitness landscape in which a genotype's fitness decays exponentially with its Hamming distance to the wild type. These results support the theory's assertions regarding the adaptation of the quasispecies to the fitness landscape and also its possible demise as a function of p.
Quantum Size Effects on the Chemical Sensing Performance of Two-Dimensional Semiconductors
Creators: name: Nah, Junghyo
name: Kumar, S. Bala
name: Fang, Hui
name: Chen, Yu-Ze
name: Plis, Elena
name: Chueh, Yu-Lun
name: Krishna, Sanjay
name: Guo, Jing
name: Javey, Ali
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the role of quantum confinement on the performance of gas sensors based on two-dimensional InAs membranes. Pd-decorated InAs membranes configured as H2 sensors are shown to exhibit strong thickness dependence, with ~100x enhancement in the sensor response as the thickness is reduced from 48 to 8 nm. Through detailed experiments and modeling, the thickness scaling trend is attributed to the quantization of electrons which favorably alters both the position and the transport properties of charge carriers; thus making them more susceptible to surface phenomena.
EVIDENCE-BASED ANALGESIA FOR OPIOID DEPENDENT PATIENTS UNDERGOING MAJOR SURGERY
Creators: name: Bordi, Sandra Kay
Publisher: name: Zenodo
Year: 2014

description: There is a high prevalence of chronic pain in America that has resulted in the increased use of opioids for treatment. Healthcare providers are challenged with alleviating acute surgical pain in chronic opioid dependent patients undergoing major surgery. These challenges are due to physical dependence, opioid tolerance, and/or opioid induced hyperalgesia. Results of an integrative literature review indicate that current published practice recommendations (guidelines) are based primarily on secondary sources, case reports, and expert opinion. The medicinal therapies that were reviewed included multimodal analgesia (with and without ketamine), intravenous lidocaine, fentanyl challenge, and methadone. Of these, the evidence supports the use of ketamine when used as adjunctive therapy in a multimodal regimen, and the use of intravenous lidocaine for abdominal surgeries. Further research is recommended for medicinal modalities in alleviating acute surgical pain in chronic opioid dependent patients undergoing major surgery
Investigation of junior high school teachers' perceptions of the semester system
Creators: name: Kendall, Lawrence Richard
Publisher: name: University of Calgary
Year: 1972
Subjects: subject: LB 1623 K44 1972 Microfilm
subject: Junior high schools
subject: Education, Secondary - Curricula
subject: School year
subject: Junior high school teachers
subject: Semester system

description: Bibliography: p. 140-145.
Radiating Bondi and Cooling Site Flows
Creators: name: Mathews, William G.
name: Guo, Fulai
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Steady accretion of a radiating gas onto a central mass point is described and compared to classic Bondi accretion. Radiation losses are essential for accretion flows to be observed. Unlike Bondi flows, radiating Bondi flows pass through a sonic point at a finite radius and become supersonic near the center. The morphology of all radiating Bondi flows is described by a single dimensionless parameter. In radiating Bondi flows the mass accretion rate varies approximately as the first power of the central mass -- this differs significantly from the quadratic dependence on the central mass in classical Bondi flows. Mass accretion rates onto galaxy or cluster-centered black holes estimated from traditional and radiating Bondi flows are significantly different. In radiating Bondi flows the gas temperature increases at large radii, as in the cores of many galaxy groups and clusters, allowing radiating Bondi flows to merge naturally with gas arriving from their cluster environments. Some radiating flows cool completely before reaching the center of the flow, and this also occurs in cooling site flows in which there is no central gravitating mass.
description: 9 pages with 3 figures; accepted by ApJ
Broad-emission-line dominated hydrogen-rich luminous supernovae
Creators: name: Pessi, P. J.
name: Anderson, J. P.
name: Folatelli, G.
name: Dessart, L.
name: González-Gaitán, S.
name: Möller, A.
name: Gutiérrez, C. P.
name: Mattila, S.
name: Reynolds, T. M.
name: Charalampopoulos, P.
name: Filippenko, A. V.
name: Galbany, L.
name: Gal-Yam, A.
name: Gromadzki, M.
name: Hiramatsu, D.
name: Howell, D. A.
name: Inserra, C.
name: Kankare, E.
name: Lunnan, R.
name: Martinez, L.
name: McCully, C.
name: Meza, N.
name: Müller-Bravo, T. E.
name: Nicholl, M.
name: Pellegrino, C.
name: Pignata, G.
name: Sollerman, J.
name: Tucker, B. E.
name: Wang, X.
name: Young, D. R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Hydrogen-rich Type II supernovae (SNe II) are the most frequently observed class of core-collapse SNe (CCSNe). However, most studies that analyse large samples of SNe II lack events with absolute peak magnitudes brighter than -18.5 mag at rest-frame optical wavelengths. Thanks to modern surveys, the detected number of such luminous SNe II (LSNe II) is growing. There exist several mechanisms that could produce luminous SNe II. The most popular propose either the presence of a central engine (a magnetar gradually spinning down or a black hole accreting fallback material) or the interaction of supernova ejecta with circumstellar material (CSM) that turns kinetic energy into radiation energy. In this work, we study the light curves and spectral series of a small sample of six LSNe II that show peculiarities in their H$α$ profile, to attempt to understand the underlying powering mechanism. We favour an interaction scenario with CSM that is not dense enough to be optically thick to electron scattering on large scales -- thus, no narrow emission lines are observed. This conclusion is based on the observed light curve (higher luminosity, fast decline, blue colours) and spectral features (lack of persistent narrow lines, broad H$α$ emission, lack of H$α$ absorption, weak or nonexistent metal lines) together with comparison to other luminous events available in the literature. We add to the growing evidence that transients powered by ejecta-CSM interaction do not necessarily display persistent narrow emission lines.
description: 27 pages, 16 figures, accepted for publication in MNRAS
Non-Threshold Quantum Secret Sharing Schemes in the Graph State Formalism
Creators: name: Sarvepalli, Pradeep
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a recent work, Markham and Sanders have proposed a framework to study quantum secret sharing (QSS) schemes using graph states. This framework unified three classes of QSS protocols, namely, sharing classical secrets over private and public channels, and sharing quantum secrets. However, most work on secret sharing based on graph states focused on threshold schemes. In this paper, we focus on general access structures. We show how to realize a large class of arbitrary access structures using the graph state formalism. We show an equivalence between $[[n,1]]$ binary quantum codes and graph state secret sharing schemes sharing one bit. We also establish a similar (but restricted) equivalence between a class of $[[n,1]]$ Calderbank-Shor-Steane (CSS) codes and graph state QSS schemes sharing one qubit. With these results we are able to construct a large class of quantum secret sharing schemes with arbitrary access structures.
description: LaTeX, 6 pages
PERG-Rx : an FPGA-based pattern-matching engine with limited regular expression support for large pattern databases
Creators: name: Ho, Johnny Tsung Lin
Publisher: name: University of British Columbia
Year: 2009

description: Pattern-matching is a fundamental technique found in applications like a network intrusion detection system (NIDS) and antivirus. By comparing an input data stream against a set of predefined byte-string patterns, malicious activities can be detected. Due to the increasing pattern database size, hardware engines are frequently being used to accelerate pattern-matching because software-based solution can no longer keep up. This thesis presents PERG, a FPGA-based pattern-matching engine targeted for the large pattern database found in Clam AntiVirus (ClamAV). Previous hardware pattern-matching engines have targeted the Snort database used in NIDS. PERG is the first hardware pattern-matching engine designed for the ClamAV pattern database, which is several times larger than Snort in both the number of patterns and the range of pattern lengths. Among hash-based pattern-matching hardware, PERG is the first to integrate limited regular-expression support. In ClamAV, this feature is needed for polymorphic virus detection. Finally among hash-based hardware pattern-matching engines, PERG is the first to implement Bloomier filters. With Bloomier filters, the process of exact matching to verify a false positive in PERG is much simpler and faster than other hash-based pattern-matching engines which use traditional Bloom filters. To reduce hardware resources, PERG uses a pattern compiler to transform the pattern database into an optimized hardware implementation. The compiler packs as many pattern strings as possible into each Bloomier filter unit, a hardware module, by consolidating several different pattern lengths into the same filter unit. To further save on hardware resources, limited regular-expression support for wildcard patterns is provided using a lossy scheme, which trades off a slight increase in false-positive probability to gain significant savings in hardware resources. False-negative probability in PERG remains zero. Using the ClamAV antivirus database, PERG fits 84,387 patterns containing over 8,645,488 characters into a single modest FPGA chip with a small (4 MB) off-chip memory. It uses just 26 filter units, resulting in roughly 24.7x improved density (characters per memory bit) compared to the next-best NIDS pattern-matching engine which fits only 1/126th the characters. PERG can scan at roughly 170MB/s and match the speed of most network or disk interfaces.
Beyond the GW approximation: combining correlation channels
Creators: name: Romaniello, Pina
name: Bechstedt, Friedhelm
name: Reining, Lucia
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In many-body perturbation theory (MBPT) the self-energy Σ=iGWΓplays the key role since it contains all the many body effects of the system. The exact self-energy is not known; as first approximation one can set the vertex function Γto unity which leads to the GW approximation. The latter properly describes the high-density regime, where screening is important; in the low-density regime, instead, other approximations are proposed, such as the T matrix, which describes multiple scattering between two particles. Here we combine the two approaches. Starting from the fundamental equations of MBPT we show how one can derive the T-matrix approximation to the self-energy in a common framework with GW. This allows us to elucidate several aspects of this formulation, including the origin of, and link between, the electron-hole and the particle-particle T matrix, the derivation of a screened T matrix, and the conversion of the T matrix into a vertex correction. The exactly solvable Hubbard molecule is used for illustration.
description: 15 pages, 7 figures
Broadband X-ray Spectral Study of Nuclear Structure in Local Obscured Radio Galaxies
Creators: name: Nakatani, Yuya
name: Ueda, Yoshihiro
name: Ricci, Claudio
name: Inaba, Koki
name: Ogawa, Shoji
name: Setoguchi, Kenta
name: Uematsu, Ryosuke
name: Yamada, Satoshi
name: Yoshitake, Tomohiro
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Radio galaxies are a key population to understand the importance of relativistic jets in AGN feedback. We present the results of a systematic, broadband X-ray spectral analysis of hard X-ray selected radio galaxies to investigate their nuclear structures. In this study, we focus on the seven most radio-loud, X-ray obscured narrow line radio galaxies in the \textit{Swift}/BAT 70 month AGN catalog. The spectra from 0.5 keV up to 66 keV obtained with \textit{Suzaku} and \textit{NuSTAR} of six objects are newly analyzed here by utilizing the X-ray clumpy torus model (XCLUMPY), whereas we refer to Ogawa et al. (2021) for the results of Centaurus A. We find that these radio galaxies have similar torus covering fractions compared with radio quiet AGNs at the same Eddington ratios ($-3 < \log λ_{\rm Edd} < -1$). This result implies that (1) the torus structure is not an important factor that determines the presence of jets and (2) AGN jets have physically little effect on the torus.
description: 10 pages (4 tables/14 figures in the main text), accepted in MNRAS
Comparison of pre-post-accreditation marks in selected Grade XII matriculation subjects
Creators: name: Rackow, Wolfgang B. W.
Publisher: name: University of Calgary
Year: 1976
Subjects: subject: LB 1617 C2 R32 1975 Microfiche
subject: High schools - Accreditation
subject: High schools - Alberta

description: Bibliography: p. 74-75.
A Weakened Cascade Model for Turbulence in Astrophysical Plasmas
Creators: name: Howes, G. G.
name: TenBarge, J. M.
name: Dorland, W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A refined cascade model for kinetic turbulence in weakly collisional astrophysical plasmas is presented that includes both the transition between weak and strong turbulence and the effect of nonlocal interactions on the nonlinear transfer of energy. The model describes the transition between weak and strong MHD turbulence and the complementary transition from strong kinetic Alfven wave (KAW) turbulence to weak dissipating KAW turbulence, a new regime of weak turbulence in which the effects of shearing by large scale motions and kinetic dissipation play an important role. The inclusion of the effect of nonlocal motions on the nonlinear energy cascade rate in the dissipation range, specifically the shearing by large-scale motions, is proposed to explain the nearly power-law energy spectra observed in the dissipation range of both kinetic numerical simulations and solar wind observations.
description: 20 pages, 8 figures, accepted for publication in Physics of Plasmas
Revealing the Superfluid Lambda Transition in the Universal Thermodynamics of a Unitary Fermi Gas
Creators: name: Ku, Mark J. H.
name: Sommer, Ariel T.
name: Cheuk, Lawrence W.
name: Zwierlein, Martin W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have observed the superfluid phase transition in a strongly interacting Fermi gas via high-precision measurements of the local compressibility, density and pressure down to near-zero entropy. Our data completely determine the universal thermodynamics of strongly interacting fermions without any fit or external thermometer. The onset of superfluidity is observed in the compressibility, the chemical potential, the entropy, and the heat capacity. In particular, the heat capacity displays a characteristic lambda-like feature at the critical temperature of $T_c/T_F = 0.167(13)$. This is the first clear thermodynamic signature of the superfluid transition in a spin-balanced atomic Fermi gas. Our measurements provide a benchmark for many-body theories on strongly interacting fermions, relevant for problems ranging from high-temperature superconductivity to the equation of state of neutron stars.
description: 11 pages, 8 figures
Mathematical diffraction of aperiodic structures
Creators: name: Baake, Michael
name: Grimm, Uwe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences
subject: 52C23

description: Kinematic diffraction is well suited for a mathematical approach via measures, which has substantially been developed since the discovery of quasicrystals. The need for further insight emerged from the question of which distributions of matter, beyond perfect crystals, lead to pure point diffraction, hence to sharp Bragg peaks only. More recently, it has become apparent that one also has to study continuous diffraction in more detail, with a careful analysis of the different types of diffuse scattering involved. In this review, we summarise some key results, with particular emphasis on non-periodic structures. We choose an exposition on the basis of characteristic examples, while we refer to the existing literature for proofs and further details.
description: 25 pages, lots of figures
Bacterial Membrane Vesicles in Pneumonia: From Mediators of Virulence to Innovative Vaccine Candidates
Creators: name: Behrens, Felix
name: Funk-Hilsdorf, Teresa C.
name: Kuebler, Wolfgang M.
name: Simmons, Szandor
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: pneumonia
subject: lower respiratory tract infection
subject: extracellular vesicles
subject: outer membrane vesicles
subject: membrane vesicles
subject: vaccine
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Pneumonia due to respiratory infection with most prominently bacteria, but also viruses, fungi, or parasites is the leading cause of death worldwide among all infectious disease in both adults and infants. The introduction of modern antibiotic treatment regimens and vaccine strategies has helped to lower the burden of bacterial pneumonia, yet due to the unavailability or refusal of vaccines and antimicrobials in parts of the global population, the rise of multidrug resistant pathogens, and high fatality rates even in patients treated with appropriate antibiotics pneumonia remains a global threat. As such, a better understanding of pathogen virulence on the one, and the development of innovative vaccine strategies on the other hand are once again in dire need in the perennial fight of men against microbes. Recent data show that the secretome of bacteria consists not only of soluble mediators of virulence but also to a significant proportion of extracellular vesicles-lipid bilayer-delimited particles that form integral mediators of intercellular communication. Extracellular vesicles are released from cells of all kinds of organisms, including both Gram-negative and Gram-positive bacteria in which case they are commonly termed outer membrane vesicles (OMVs) and membrane vesicles (MVs), respectively. (O)MVs can trigger inflammatory responses to specific pathogens including S. pneumonia, P. aeruginosa, and L. pneumophila and as such, mediate bacterial virulence in pneumonia by challenging the host respiratory epithelium and cellular and humoral immunity. In parallel, however, (O)MVs have recently emerged as auspicious vaccine candidates due to their natural antigenicity and favorable biochemical properties. First studies highlight the efficacy of such vaccines in animal models exposed to (O)MVs from B. pertussis, S. pneumoniae, A. baumannii, and K. pneumoniae. An advanced and balanced recognition of both the detrimental effects of (O)MVs and their immunogenic potential could pave the way to novel treatment strategies in pneumonia and effective preventive approaches.
Ultrathin Oxide Films by Atomic Layer Deposition on Graphene
Creators: name: Wang, Luda
name: Travis, Jonathan J.
name: Cavanagh, Andrew S.
name: Liu, Xinghui
name: Koenig, Steven P.
name: Huang, Pinshane Y.
name: George, Steven M.
name: Bunch, J. Scott
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper, a method is presented to create and characterize mechanically robust, free standing, ultrathin, oxide films with controlled, nanometer-scale thickness using Atomic Layer Deposition (ALD) on graphene. Aluminum oxide films were deposited onto suspended graphene membranes using ALD. Subsequent etching of the graphene left pure aluminum oxide films only a few atoms in thickness. A pressurized blister test was used to determine that these ultrathin films have a Young's modulus of 154 \pm 13 GPa. This Young's modulus is comparable to much thicker alumina ALD films. This behavior indicates that these ultrathin two-dimensional films have excellent mechanical integrity. The films are also impermeable to standard gases suggesting they are pinhole-free. These continuous ultrathin films are expected to enable new applications in fields such as thin film coatings, membranes and flexible electronics.
description: Nano Letters (just accepted)