cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Factors Influencing Epiphytic Lichen Communities in Aspen-Associated Forests of the Bear River Range, Idaho and Utah
Creators: name: Rogers, Paul C.
Publisher: name: Utah State University
Year: 2007

description: In western North America, quaking aspen (Populus tremuloides Michx.) is the most common hardwood in montane landscapes. Fire suppression, grazing, wildlife management practices, and climate patterns of the past century are some of the threats to aspen coverage in this region. Researchers are concerned that aspen-dependent species may be losing habitat, thereby threatening their long-term local and regional viability. Though lichens have a rich history as air pollution indicators, I believe that they may also be useful as a metric of community diversity associated with habitat change. To date, few studies have specifically examined the status of aspen's epiphytic lichen community in the Rocky Mountains. A preliminary study was conducted using 10 transect-based plots to assess lichen species substrate preferences between aspen and various conifer species and to gain basic knowledge of species diversity. Following this work, I established 47 plots in the Bear River Range of northern Utah and southern Idaho to evaluate the effects of forest succession on epiphytic macrolichen communities. Plots were located in a narrow elevational belt (2,134-2,438 m) to minimize the known covariant effects of elevation and moisture on lichen communities. Results show increasing lichen diversity and a decrease in aspen-dependent species as aspen forests succeed to conifer cover types. The interactive roles of stand aspect, basal area and cover of dominant trees, stand age, aspen bark scars, and recent tree damage were examined in relation to these trends. An aspen index score was developed based on lichens showing an affinity for aspen habitat. I present a landscape-level multivariate analysis of short and long-term factors influencing epiphytic lichen communities in aspen forests. Nonrnetric multidimensional scaling (NMS) ordination stressed the importance of succession and local air pollution sources in shaping lichen communities. I also investigated the role of historic human intrusions and climate on aspen forests and aspen dependent epiphytic lichens at the landscape-level. Implications of this work include 1) realization of nitrogen impacts on ecosystems, 2) the potential for using lichens as bioindicators for monitoring aspen stand health, and 3) suggestions for working with natural disturbance regimes to minimize human impacts on aspen and associated species.
Building the Full Fermion-Photon Vertex of QED by Imposing Multiplicative Renormalizability of the Schwinger-Dyson Equations for the Fermion and Photon Propagators
Creators: name: Kizilersu, A.
name: Pennington, M. R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In principle, calculation of a full Green's function in any field theory requires knowledge of the infinite set of multi-point Green's functions, unless one can find some way of truncating the corresponding Schwinger-Dyson equations. For the fermion and boson propagators in QED this requires an {\it ansatz} for the full three point vertex. Here we illustrate how the properties of gauge invariance, gauge covariance and multiplicative renormalizability impose severe constraints on this fermion-boson interaction, allowing a consistent truncation of the propagator equations. We demonstrate how these conditions imply that the 3-point vertex {\bf in the propagator equations} is largely determined by the behaviour of the fermion propagator itself and not by knowledge of the many higher point functions. We give an explicit form for the fermion-photon vertex, which in the fermion and photon propagator fulfills these constraints to all orders in leading logarithms for massless QED, and accords with the weak coupling limit in perturbation theory at ${\cal O}(α)$. This provides the first attempt to deduce non-perturbative Feynman rules for strong physics calculations of propagators in massless QED that ensures a more consistent truncation of the 2-point Schwinger-Dyson equations. The generalisation to next-to-leading order and masses will be described in a longer publication.
description: 57 pages, 3 figures
title: Comparison of Beef Flavor Compounds from Steaks and Ground Patties of Three USDA Quality Grades and Varied Degrees of Doneness
Creators: name: Gardner, Kourtney
Publisher: name: Utah State University
Year: 2017

description: This study determined how quality grade and degree of doneness influence the development of beef flavor compounds among whole muscle and ground patties. Proximate composition, pH, cooking duration, neutral and polar lipid fatty acids, free and total amino acids, total reducing sugars, and volatile compounds were evaluated in beef strip steaks and ground patties of Longissimus lumborum from three USDA quality grades (Prime, Low Choice, and Standard; n=8 per quality grade) and six degrees of doneness (4, 25, 55, 60, 71, and 77°C). In the split-plot experiment, quality grade was the whole-plot, product-type was a sub-plot, and degree of doneness was the sub-sub-plot. The 3-way interaction of quality grade, degree of doneness, and product type impacted moisture (P = 0.004) and protein content (P = 0.006); pH (P < 0.001); neutral and polar lipid fatty acids (P ≤ 0.048); free and total amino acids (P ≤ 0.044); total reducing sugars (P < 0.001); and volatile compounds (P ≤ 0.029). The 2-way interaction of quality grade and degree of doneness impacted free amino acids (P ≤ 0.036); PUFA within the neutral lipid fraction (P ≤ 0.033); fatty acids within the polar lipid fraction (P ≤ 0.043); volatile compounds (P ≤ 0.038); and the total fat percentage (P = 0.046). The 2-way interaction of quality grade and product type impacted fatty acids within the neutral lipid fraction (P ≤ 0.042); fatty acids within the polar lipid fraction (P ≤ 0.015); and volatile compounds (P ≤ 0.047). The 2-way interaction of product type and degree of doneness affected fatty acids within the neutral lipid fraction (P ≤ 0.046); fatty acids within the polar lipid fraction (P ≤ 0.035); free amino acids (P ≤ 0.005) and total amino acids (P ≤ 0.004); volatile compounds (P ≤ 0.029); and cooking duration (P < 0.001). Overall the results of this study indicated that quality grade, grinding, and cooking have interacting effects on flavor related compounds. Thus, each factor must be considered during any model development which aims to predict beef flavor.
The geology of the Pioneer Ultramafite, Bralorne, British Columbia
Creators: name: Wright, Robert Leslie
Publisher: name: University of British Columbia
Year: 2010

description: The Pioneer Ultramafite, south of Bralorne, British Columbia, is a fault-bounded lens of alpine-type peridotite enclosed in lower greenschist facies sediments and volcanics of the middle Triassic Fergusson Group and late Triassic Noel, Pioneer and Hurley Formations. The body consists of a core of well layered harzburgite, dunite and orthopyroxenite, rimmed by serpentinite and talc-carbonate alteration zones containing tectonic inclusions of sediments, volcanics and rodingite. Foliated harzburgite forms approximately 80 per cent of the ultramafite; dunite, as dikes, sills and irregular pods in harzburgite, comprises about 17 per cent; and orthopyroxenite as layers (1 to 15 cm thick), parallel to the foliation, in harzburgite, constitutes the remaining 3 per cent. Electron microprobe analyses of the primary minerals indicate olivine composition ranges from Fo 90.2 to 92.5, orthopyroxene from En 89.2 to 90.2 and clinopyroxene averages Ca₄₆․₉Mg₄₉․₇Fe₃․₄. Compositions of coexisting primary minerals indicate a temperature of equilibration of about 950°C at an unknown pressure. Alteration assemblages in the serpentinized contact zone indicate migration of 0, H₂O, C0₂, CaO, MgO and S10₂ resulting in metasomatism of the ultramafite and country rocks, producing rodingite, nephrite (jade) and talc-carbonate. Serpentinization apparently occurred during emplacement of the ultramafite into the surrounding country rocks. Plastic deformation and recrystallization of the peridotite produced the pervasive planar foliation or layering, which has been disrupted by several later episodes of folding and fracturing. Country rocks show evidence of two phases of deformation prior to emplacement of the ultramafite, A strong foliation of serpentinite and country rocks, near the contact, was produced during emplacement. The ultramafite and country rocks are interpreted as a partial, dismembered ophiolite which was emplaced in the late Triassic or early Jurassic by obduction of oceanic crust onto the continental margin.
The Swift SFXT monitoring campaign: the IGR J16479-4514 outburst in 2009
Creators: name: La Parola, V.
name: Ducci, L.
name: Romano, P.
name: Sidoli, L.
name: Cusumano, G.
name: Vercellone, S.
name: Mangano, V.
name: Kennea, J. A.
name: Krimm, H. A.
name: Burrows, D. N.
name: Gehrels, N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: IGR J16479-4514 is a member of the Supergiant Fast X-ray transient (SFXT) class. We present the light curves of its latest outburst, which occurred on January 29, 2009. During this outburst, IGR J16479-4514 showed prolonged activity lasting several days. The presence of eclipses was successfully tested.
description: Proceeding of X-ray Astronomy 2009 (Bologna, Italy September 7-11, 2009)
Mathematische Aufgaben und Lösungen, u.a. in Geometrie und von Differentialgleichungen.
Auszug oder eigene Lösungen, paginiert mit Bl. 77 bis Bl. 84, notiert von Joseph Wolfgang von Deschwanden (1819-1866)
Creators: name: Deschwanden, Joseph Wolfgang von
Publisher: name: [s.n.]
Year: 1835

description: Lose Reinschrift.
Text, Gleichungen und einzelne geometrische Darstellungen
title: Increasing Knowledge and Detection of Racial and Ethnic Microaggressions in White College Students
Creators: name: Patterson, Christina A.
Publisher: name: Utah State University
Year: 2017

description: To combat microaggressions and their impact on persons of color, there needs to be an increased awareness and ability to detect microaggressions when they occur. This study examined the efficacy of a multimedia intervention aimed at increasing White individuals’ ability to accurately detect microaggressions.
Undergraduate university students (61 women, 40 men, 2 other) were recruited from two predominantly White universities (PWU). All participants completed pre- and post-intervention materials, and 54 participants completed the 1-week follow-up materials. At pre-intervention, participants watched a set of video clips (e.g., television, movies), some of which contained racial and ethnic microaggressions, answered a series of questions regarding the content of the videos, and completed the Colorblind Racial Attitudes Scale (CoBRAS). Participants in the high-exposure intervention condition watched a 1-hour video lecture on racial and ethnic microaggressions. Participants in the low-exposure and control conditions read an article (e.g., racial and ethnic microaggressions or positive psychology) and answered a series of questions regarding the content of the articles. At post-intervention, completed immediately following the intervention, and 1-week follow-up, participants watched another set of video clips and some of which included racial and ethnic microaggressions. Participants then answered a series of questions regarding the content of the video, and completed a CoBRAS.
The high-exposure intervention condition did not demonstrate any significant change from pre- to post- intervention detection rates. There was no significant change from pre- to post-intervention to 1-week follow-up detection rates between conditions. Post-hoc analyses regarding colorblindness indicated a significant decrease in CoBRAS total score from pre-intervention (M = 62.23, SD = 15.39) to post-intervention across participants (M = 61.67, SD = 15.66), t(102) = 3.26, p = .002, d = .32, indicating a decrease in overall colorblindness. There was a significant decrease in Unawareness of Racial Privilege scores from pre-intervention (M = 26.67, SD = 7.51) to post-intervention across participants (M = 25.51, SD = 7.87), t(102) = 3.28, p = .001, d = .32, indicating an increased awareness of racial privilege. Awareness of institutional discrimination and blatant racial discrimination did not shift significantly. Interpretations and implications of the findings, are discussed.
Multiplicity dependence freeze-out scenarios in pp collisions at $\sqrt{s}$ = 7 TeV
Creators: name: Panda, Susil Kumar
name: Chatterjee, Sandeep
name: Dash, Ajay Kumar
name: Mohanty, Bedangadas
name: Paikaray, Rita
name: Samanta, Subhasis
name: Singh, Ranbir
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The data on transverse momentum integrated hadron yields in different multiplicity classes of p+p collisions at $\sqrt{s}=7$ TeV have been analyzed to extract the chemical freeze-out parameters using a thermal model. The chemical freeze-out parameters have been extracted for three different freeze-out schemes: i. unified freeze-out for all hadrons in complete thermal equilibrium (1CFO), ii. unified freeze-out for all hadrons with an additional parameter $γ_S$ which accounts for possible out-of-equilibrium production of strange hadrons (1CFO$+γ_S$), and iii. separate freeze-out for hadrons with and without strangeness content (2CFO). It has been observed that 1CFO$+γ_S$ scheme gives the best description of the hadronic yields at midrapidity when multiplicity ($\langle dN_{ch}/dη\rangle$) of the collision is less than 10. This indicates that the strangeness is out of equilibrium in most of the multiplicity classes of p+p collisions. All the three parameters of this CFO scheme, temperature ($T$), radius of the fireball ($R$) and strangeness suppression factor ($γ_S$) increase with the increase of $\langle dN_{ch}/dη\rangle$. Further, we have compared applicability of different CFO schemes considering two more colliding system p+Pb at $\sNN$ = 5.02 and Pb+Pb at $\sNN$ = 2.76 TeV along with p+p collisions at $\sqrt{s}=7$ TeV. We observe a freeze-out volume (or multiplicity) dependence of CFO schemes regardless of colliding ions. The 1CFO+$γ_S$, 1CFO and 2CFO schemes provide best description of the data when the dimension less quantity $VT^3$ approximately satisfies the conditions $VT^3 <50$, $50 < VT^3 < 100$ and $VT^3 > 100$ respectively or the corresponding multiplicity satisfies the conditions $\langle dN_{ch}/dη\rangle<30$, $30 < dN_{ch}/dη< 60$ and $\langle dN_{ch}/dη\rangle>100$ respectively.
description: 9 Pages, 6 figures
Fermi-LAT Observation of PSR B1259-63 during Its 2021 Periastron Passage
Creators: name: Chang, Zhi
name: Zhang, Shu
name: Chen, Yu-Peng
name: Ji, Long
name: Kong, Ling-Da
name: Wang, Peng-Ju
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: PSR B1259-63 is a $γ$-ray binary system, where the compact object is a pulsar. The system has an orbital period of 1236.7 days and shows peculiar $γ$-ray flares (in 100\,MeV--300\,GeV) after its periastron time. We analyzed the \textit{Fermi}-LAT observation of PSR B1259-63 during its latest periastron passage, as well as its previous three periastrons. The bright GeV flares started about 60 days after the periastron epoch in 2021. This delay is larger than that around the 2017 periastron and much larger than earlier periastrons. The delay of the GeV flux peak time in each periastron passage is apparent in our results. We discussed the possible origin of this delay and made a prediction of the GeV flux peak time in next periastron passage, based on observation of the previous delays.
description: accepted for publication in Universe
title: Power Analysis of Continuous Data Capture in BeePi, a Solar- Powered Multi-Sensor Electronic Beehive Monitoring System for Langstroth Beehives
Creators: name: Shah, Keval
Publisher: name: Utah State University
Year: 2017

description: This thesis describes the power analysis of the electronic beehive monitoring system. The electronic beehive monitoring system was made to work either with a UB12120 12V 12Ah standard lead-acid battery or an Anker (TM) Astro E7 5V lithium-ion battery to analyze the power requirements. These batteries are recharged by Renogy 50Watt 12 Volt Monocrystalline Solar Panel. Power analysis is performed using both batteries to calculate system’s efficiency. The performed power analysis indicates that the Anker (TM) Astro E7 26800mAh 5V lithium-ion battery runs approximately 6 hours more than the lead acid battery. Moreover, the lithium-ion battery is compact, has a lighter weight, is more efficient, and has a longer cycle life. Using lithium-ion batteries will likely result in fewer hardware components and a smaller environmental footprint.
title: A Survey and Performance Analysis of Orbit Propagators for LEO, GEO, and Highly Elliptical Orbits
Creators: name: Shuster, Simon P.
Publisher: name: Utah State University
Year: 2017

description: On-orbit targeting, guidance, and navigation relies on state vector propagation algorithms that must strike a balance between accuracy and computational efficiency. To better understand this balance, the relative position accuracy and computational requirements of numerical and analytical propagation methods are analyzed for a variety of orbits. For numerical propagation, several differential equation formulations (Cowell, Encke-time, Encke-beta, and Equinoctial Elements) are compared over a range of integration step sizes for a given set of perturbations and numerical integration methods. This comparison is repeated for two numerical integrators: a Runge-Kutta 4th order and a NLZD4/4. For analytical propagation, SGP4, which relies on mean orbital elements, is compared for element sets averaged with different amounts of orbit data.
The winds of young Solar-type stars in Coma Berenices and Hercules-Lyra
Creators: name: Evensberget, Dag
name: Carter, Bradley D.
name: Marsden, Stephen C.
name: Brookshaw, Leigh
name: Folsom, Colin P.
name: Salmeron, Raquel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present wind models of ten young Solar-type stars in the Hercules-Lyra association and the Coma Berenices cluster aged around 0.26 Gyr and 0.58 Gyr respectively. Combined with five previously modelled stars in the Hyades cluster, aged 0.63 Gyr, we obtain a large atlas of fifteen observationally based wind models. We find varied geometries, multi-armed structures in the equatorial plane, and a greater spread in quantities such as the angular momentum loss. In our models we infer variation of a factor of ~6 in wind angular momentum loss $\dot J$ and a factor of ~2 in wind mass loss $\dot M$ based on magnetic field geometry differences when adjusting for the unsigned surface magnetic flux. We observe a large variation factor of ~4 in wind pressure for an Earth-like planet; we attribute this to variations in the 'magnetic inclination' of the magnetic dipole axis with respect to the stellar axis of rotation. Within our models, we observe a tight correlation between unsigned open magnetic flux and angular momentum loss. To account for possible underreporting of the observed magnetic field strength we investigate a second series of wind models where the magnetic field has been scaled by a factor of 5. This gives $\dot M \propto B^{0.4}$ and $\dot J \propto B^{1.0}$ as a result of pure magnetic scaling.
Roue hélice von Girard, für kleines Gefälle und viel Wasser.
Zeichnung, erstellt von Joseph Wolfgang von Deschwanden (1819-1866)
Creators: name: Deschwanden, Joseph Wolfgang von
Publisher: name: [s.n.]
Year: 1850

description: Skizze, die vermutlich nach 1850 (ev. um 1853/54) entstanden ist. Louis-Dominique Girard machte 1851 bzw. im Jahr 1853 (Patent) seine Entwicklung von Niedrigdruckturbinen bekannt, die er „Hélices“ nannte, Geräte mit horizontaler Achse, die er in die Lage versetzte, unabhängig von den Schwankungen des Wasserstands zufriedenstellend zu funktionieren
title: Vision-Based Control of a Full-Size Car by Lane Detection
Creators: name: Kunz, N. Chase
Publisher: name: Utah State University
Year: 2017

description: Autonomous driving is an area of increasing investment for researchers and auto manufacturers. Integration has already begun for self-driving cars in urban environments. An essential aspect of navigation in these areas is the ability to sense and follow lane markers. This thesis focuses on the development of a vision-based control platform using lane detection to control a full-sized electric vehicle with only a monocular camera. An open-source, integrated solution is presented for automation of a stock vehicle. Aspects of reverse engineering, system identification, and low-level control of the vehicle are discussed. This work also details methods for lane detection and the design of a non-linear vision-based control strategy.
5 Briefe an Jakob Melchior Ziegler
Creators: name: Lyell, Charles
Publisher: name: [s.n.]
Year: 1855

description: von Charles Lyell
description: Öffentliche Bibliothek der Universität Basel
description: Verzeichnung=Description=Inventaire Juni 2020 Vollständige Rekatalogisierung nach: Nachlassverzeichnis Nachlass Jakob Melchior Ziegler (1801-1883)
X-ray Absorption and Optical Extinction in the Partially Obscured Seyfert Nucleus in Mrk 1393
Creators: name: Wang, T. G.
name: Zhou, H. Y.
name: Grupe, D.
name: Yuan, W. M.
name: Dong, X. B.
name: Lu, H. L.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a detailed study of the X-ray and optical spectra of the luminous Seyfert galaxy Mrk 1393, which revealed variable partial obscuration of the active nucleus. The X-ray spectra obtained by XMM-Newton and Swift show moderate absorption with a column density around 3x10^21 cm^-2, consistent with a dust-reddening interpretation of the steep Balmer decrement seen in recent optical spectra. The X-ray flux in the 0.5 to 2 keV band during the XMM-Newton observation in 2005 and Swift observation in 2006 was a factor 6 brighter than that of the ROSAT All Sky Survey in 1991. In the past 4 years, the broad Hαline brightened by a factor of 4 accompanied by a decrease in the Balmer decrement. A comparison with literature spectra reveals variations in the dust extinction on time scales of several years, suggesting that the obscuring material is very close to the active nucleus. These observations indicate that a dust-to-gas ratio as high as the Galactic value can be present in moderately thick gas in the vicinity of the central engine within a few parsecs. We suggest that the obscuring material may be debris disrupted from the dusty torus.
description: 25 pages, 5 figures, accepted to AJ
Always detectable eigenfunctions on metric graphs
Creators: name: Kurasov, Pavel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 34L05, 58C40

description: It is proven following [18[ that Laplacians with standard vertex continuous on metric trees and with standard and Dirichlet conditions on arbitrary metric graphs possess an infinite sequence of simple eigenvalues with the eigenfunctions not equal to zero in any non-Dirichlet vertex.
description: 6 pages
Testing CPT symmetry in ortho-positronium decays with positronium annihilation tomography
Creators: name: Moskal, Paweł
name: Gajos, Aleksander
name: Mohammed, Muhsin
name: Chhokar, Jyoti
name: Chug, Neha
name: Curceanu, Catalina
name: Czerwiński, Eryk
name: Dadgar, Meysam
name: Dulski, Kamil
name: Gorgol, Marek
name: Goworek, Jacek
name: Hiesmayr, Beatrix
name: Jasińska, Bożena
name: Kacprzak, Krzysztof
name: Kapłon, Łukasz
name: Karimi, Hanieh
name: Kisielewska, Daria
name: Klimaszewski, Konrad
name: Korcyl, Grzegorz
name: Kowalski, Paweł
name: Krawczyk, Nikodem
name: Krzemień, Wojciech
name: Kozik, Tomasz
name: Kubicz, Ewelina
name: Niedźwiecki, Szymon
name: Parzych, Szymon
name: Pawlik-Niedźwiecka, Monika
name: Raczyński, Lech
name: Raj, Juhi
name: Sharma, Sushil
name: Choudhary, Shivani
name: Shopa, Roman
name: Sienkiewicz, Andrzej
name: Silarski, Michał
name: Skurzok, Magdalena
name: Stępień, Ewa
name: Tayefi, Faranak
name: Wiślicki, Wojciech
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Charged lepton system symmetry under combined charge, parity, and time-reversal transformation (CPT) remains scarcely tested. Despite stringent quantum-electrodynamic limits, discrepancies in predictions for the electron-positron bound state (positronium atom) motivate further investigation, including fundamental symmetry tests. While CPT noninvariance effects could be manifested in non-vanishing angular correlations between final-state photons and spin of annihilating positronium, measurements were previously limited by knowledge of the latter. Here, we demonstrate tomographic reconstruction techniques applied to three-photon annihilations of ortho-positronium atoms to estimate their spin polarisation without magnetic field or polarised positronium source. We use a plastic-scintillator-based positron-emission-tomography scanner to record ortho-positronium (o-Ps) annihilations with single-event estimation of o-Ps spin and determine the complete spectrum of an angular correlation operator sensitive to CPT-violating effects. We find no violation at the precision level of 10^{-4}, with an over threefold improvement on the previous measurement.
description: This is a preprint of an article published in Nature Communications. The final version is available at https://rdcu.be/cCQqq
Covariant gauge on the lattice: a new implementation
Creators: name: Cucchieri, Attilio
name: Mendes, Tereza
name: Santos, Elton M. S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We derive a new implementation of linear covariant gauges on the lattice, based on a minimizing functional that can be interpreted as the Hamiltonian of a spin-glass model in a random external magnetic field. We show that our method solves most problems encountered in earlier implementations, mostly related to the no-go condition formulated by L. Giusti, Nucl. Phys. B 498, 331 (1997). We carry out tests in the SU(2) case in four space-time dimensions. We also present preliminary results for the transverse gluon propagator at different values of the gauge parameter xi.
description: 3 figures, 3 plots; Sections II.A, II.B and III have been modified; final version to appear in Phys. Rev. Lett
Cost-Effective Large-Scale Digital Twins Notification System with Prioritization Consideration
Creators: name: Vrbaski, Mira
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2023
Subjects: IoT
Digital Twin
cloud computing
microservices
containers
multi-objective optimization
deep reinforcement learning

description: Large-Scale Digital Twins Notification System (LSDTNS) monitors a Digital Twin (DT) cluster for a predefined critical state, and once it detects such a state, it sends a Notification Event (NE) to a predefined recipient. Additionally, the time from producing the DT's Complex Event (CE) to sending an alarm has to be less than a predefined deadline. However, addressing scalability and multi-objectives, such as deployment cost, resource utilization, and meeting the deadline, on top of process scheduling, presents a complex challenge. Therefore, this thesis presents a complex methodology consisting of three contributions that address system scalability, multi-objectivity and scheduling of CE processes using Reinforcement Learning (RL). The first contribution proposes the IoT Notification System Architecture based on a micro-service-based notification methodology that allows for running and seamlessly switching between various CE reasoning algorithms. Our proposed IoT Notification System architecture addresses the scalability issue in state-of-the-art CE Recognition systems. The second contribution proposes a novel methodology for multi-objective optimization for cloud provisioning (MOOP). MOOP is the first work dealing with multi-optimization objectives for microservice notification applications, where the notification load is variable and depends on the results of previous microservices subtasks. MOOP provides a multi-objective mathematical cloud resource deployment model and demonstrates effectiveness through the case study. Finally, the thesis presents a Scheduler for large-scale Critical Notification applications based on a Deep Reinforcement Learning (SCN-DRL) scheduling approach for LSDTNS using RL. SCN-DRL is the first work dealing with multi-objective optimization for critical microservice notification applications using RL. During the performance evaluation, SCN-DRL demonstrates better performance than state-of-the-art heuristics. SCN-DRL shows steady performance when the notification workload increases from 10% to 90%. In addition, SCN-DRL, tested with three neural networks, shows that it is resilient to sudden container resources drop by 10%. Such resilience to resource container failures is an important attribute of a distributed system.
Zelandobius crawfordi McLellan 2008, sp. n.
Creators: name: McLellan, Ian D.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Gripopterygidae
Zelandobius
Zelandobius crawfordi

description: Zelandobius crawfordi sp. n. (Figs. 10-13) Material examined. Holotype ♂, NZCO, Pigroot Ck, 520 m, 8 Sept 1993, B. H. Patrick (NZAC); paratype ♀, NZCO, Pigroot Ck, 500 m, 12 Oct 1994, B. H. Patrick (NZAC); 2 paratype ♂, NZCO, Pigroot Ck, 520 m, 8 Sept 1993, B. H. Patrick (Central Stories Museum & Art Gallery, Alexandra, New Zealand); 1♂, NZCO, Shag River headwaters, 570 m, 10 Sept 1993, B. H. Patrick; 2♂, NZCO, Umbrella Mts, 360 m, trib Pomahaka River, 23 Sept 1993, H. Patrick; 1♂, NZCO, West Eweburn, Ida Range, 1100-1250 m, 25 Sept 1996, B. H. Patrick. Dimensions. Male: Body length 7-7.5 mm; antenna 6 mm; forewing 7-7.5 mm; hind leg 5.5 mm; pronotum length 0.8 mm, width 1.09 mm. Female: Body length 7.5 mm; antenna 5 mm; forewing 8 mm; hind leg 5.5 mm; pronotum length 0.96 mm, width 1.28 mm. Larva: Unknown. Adult. Head uniform medium brown apart from a darker patch at base of antennae; ocelli prominent. Antennae long with first segment of flagellum as long as scape. Pronotum uniform medium brown, rectangular and slightly wider than long. Forewing (Fig. 10) with most distal crossveins white; 4 grey to brown bars across wing distally; areas between bars in middle of wing white; tip of wing brown. Rs fork 0.33 x length of Rs. Male genitalia. (Figs. 11, 12). Posterior margin of central sclerite concave. Membranous cone covered with dark spots and with sides tapered. Posterior sclerite long, dark and bulged at tip. Epiproct with tip curved and bulged and 2 pairs of teeth on epiproct margins. Paraproct with prominent bulge on dorsal margin below base of spine which is sturdy and slightly curved. Cerci each with about 12 segments and extended straight posteriorly. Female genitalia. (Fig. 13). Subgenital plate brown with medial third pale and with prominent lateral lobes of posterior margin dark brown. Subanal lobes dark brown. Remarks. This species appears closely related to Z. patricki (Figs. 14, 15). The male genitalia are similar and both have the cerci of about 12 segments which extend posteriorly. The differences in genital structures are shown for males in Figs. 12 and 14 and Table 1. Differences in female genital patterns are shown in Figs. 13 and 15. Etymology. This species is dedicated to aquatic insect photographer W. J. Crawford (a.k.a. Mayfly Bill) of Taupo, New Zealand for the great effort he has made in collecting aquatic insects for me.
description: Published as part of McLellan, Ian D., 2008, Additions To Zelandobius (Plecoptera: Gripopterygidae Antarctoperlinae) From New Zealand, pp. 11-18 in Illiesia 4 (2) on pages 14-15, DOI: 10.5281/zenodo.4758846
Evaluation of Interactive User Corrections for Lecture Transcription
Creators: name: Kolkhorst, Henrich
name: Kilgour, Kevin
name: Stüker, Sebastian
name: Waibel, Alex
Publisher: name: Association for Computational Linguistics (ACL)
Year: 2012

description: In this work, we present and evaluate the usage of an interactive web interface for browsing and correcting lecture transcripts. An experiment performed with potential users without transcription experience provides us with a set of example corrections. On German lecture data, user corrections greatly improve the comprehensibility of the transcripts, yet only reduce the WER to 22%. The precision of user edits is relatively low at 77% and errors in inflection, case and compounds were rarely corrected. Nevertheless, characteristic lecture data errors, such as highly specific terms, were typically corrected, providing valuable additional information.
title: Burning Budgets: Does an Institutional Blank-Check Raise the Severity and Cost of Fighting Wildland Fires?
Creators: name: Stein, Devin T.
Publisher: name: Utah State University
Year: 2017

description: In conducting this research, I wanted to explore whether political incentives have a significant effect on wildfire management in the United States. I attempt to answer this question by proving a theoretical justification for why wildfires may become more expensive to fight and severe to manage because of political institutions. I then attempt to provide some hard evidence to support this theory by using regression analysis. My analysis suggests that political factors do matter for wildfire suppression funding, although I was unable to find strong enough evidence to suggest that these political factors are actually driving more severe wildfires. This research contributes to the literature on public choice theory, a branch of political economy that looks at government from the individual decision makers’ level. Additionally, this research contributes to the literature on what affects wildfire suppression effectiveness and funding. This research may contribute to future analyses of the institutions that make U.S. wildland firefighters more or less capable of effectively managing wildfires to protect human lives, property, and forests.
Unparticle actions and gauge invariance
Creators: name: Ilderton, Anton
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that the requirement of gauge invariance is not enough to fix the form of interactions between unparticles and gauge fields, thus revealing a wide new class of gauged unparticle actions. Our approach also allows us to construct operators which create gauge invariant coloured unparticles. We discuss both their perturbative and non--perturbative properties.
description: 15 pages. V2: references added. Version to appear in PRD
Near-field Electrical Detection of Optical Plasmons and Single Plasmon Sources
Creators: name: Falk, Abram L.
name: Koppens, Frank H. L.
name: Yu, Chun L.
name: Kang, Kibum
name: Snapp, Nathalie de Leon
name: Akimov, Alexey V.
name: Jo, Moon-Ho
name: Lukin, Mikhail D.
name: Park, Hongkun
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Photonic circuits can be much faster than their electronic counterparts, but they are difficult to miniaturize below the optical wavelength scale. Nanoscale photonic circuits based on surface plasmon polaritons (SPs) are a promising solution to this problem because they can localize light below the diffraction limit. However, there is a general tradeoff between the localization of an SP and the efficiency with which it can be detected with conventional far-field optics. Here we describe a new all-electrical SP detection technique based on the near-field coupling between guided plasmons and a nanowire field-effect transistor. We use the technique to electrically detect the plasmon emission from an individual colloidal quantum dot coupled to an SP waveguide. Our detectors are both nanoscale and highly efficient (0.1 electrons/plasmon), and a plasmonic gating effect can be used to amplify the signal even higher (up to 50 electrons/plasmon). These results enable new on-chip optical sensing applications and are a key step towards "dark" optoplasmonic nanocircuits in which SPs can be generated, manipulated, and detected without involving far-field radiation.
description: manuscript followed by supplementary information
Time-dependent density functional theory of high excitations: To infinity, and beyond
Creators: name: van Faassen, Meta
name: Burke, Kieron
Publisher: name: arXiv
Year: 2009
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We review the theoretical background for obtaining both quantum defects and scattering phase shifts from time-dependent density functional theory. The quantum defect on the negative energy side of the spectrum and the phase shift on the positive energy side merge continuously at E=0, allowing both to be found by the same method. We illustrate with simple one-dimensional examples: the spherical well and the delta well potential. As an example of a real system, we study in detail elastic electron scattering from the He${}^{+}$ ion. We show how the results are influenced by different approximations to the unknown components in (time-dependent) density functional theory: the ground state exchange-correlation potential and time-dependent kernel. We also revisit our previously obtained results for $e$-H scattering. Our results are remarkably accurate in may cases, but fail qualitatively in others.
description: Resubmitted version, Changed acknowledgments, 17 pages including supplementary table, submitted to PCCP themed issue on time-dependent density-functional theory
Superconductivity in the Iron-Pnictide Parent Compound SrFe2As2
Creators: name: Kirshenbaum, K. C.
name: Saha, S. R.
name: Butch, N. P.
name: Magill, J. D.
name: Paglione, J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The appearance of superconductivity at ambient pressures in the undoped iron pnictide parent compound SrFe2As2 is studied experimentally using several techniques and approaches to aid in understanding the nature of this phase. Low temperature magnetization measurements of single crystals of SrFe2As2 reveal diamagnetic screening due to the onset of superconductivity below 21 K, with volume fraction estimates varying between 0 and 15 percent. The effects of heat treatment and cold-working via severe mechanical deformation on the superconducting phase found are studied, showing that superconductivity can be suppressed via modest annealing and reinstated by cold-working.
description: 5 pages, 4 eps figures, to appear in IEEE TIC-STH Conference Proceedings
title: Breeding Behavior and Space Use of Male and Female Mule Deer: An Examination of Potential Risk Differences for Chronic Wasting Disease Infection
Creators: name: McFarlane, Leslie R.
Publisher: name: Utah State University
Year: 2007

description: The dynamics of pathogen and host relationships relative to disease transmission in wildlife populations are important ecological processes to understand, particularly since spatial dynamics of disease can be driven by movement, behavior, and dispersal of animals. Chronic Wasting Disease (CWD) is an example of this important interface, where little is known regarding origin of the disease or routes of transmission. Surveillance data for CWD in free-ranging mule deer indicates that breeding-age male deer have 2-4 times higher prevalence rates than females or younger age males. In an effort to understand differences that might increase risk for exposure to CWD infective agents, I used GPS data to examine breeding behavior and home range sizes of mule 11 deer. GPS radiocollars were placed on adult (> 2 ½ years) males, females, and young ( < 2 ½ years) males. Data collected during the breeding season was used to infer visitation rates of males to females. Cluster analysis was used to separate data into periods of movement (spatio-temporal clusters) and non-movement. Females formed more spatio-temporal clusters and movement paths than males. However, males spent more time moving, had more long-term periods of movement, moved an estimated 1 km/day more than females, and had more tortuous movement paths. Male home ranges for winter, summer, and breeding seasons were also larger than those of females. Overall, data indicates that males may have an increased risk of exposure to CWD relative to females, because of larger movements and greater space use. These male behavioral differences may result in increased encounter rates with CWD infectious material through greater exposure in the environment to sources such as carcasses from infected animals, their excreta, or contaminated soils. Furthermore, during the breeding season increased male sociality, as suggested by increased movement rates and movement path tortuousity, combined with larger space use may further enhance direct contact with infected individuals and increase exposure to excreta sources such as feces and alimentary secretions due to licking and tending behaviors.
title: Dr. Craig H. Llewellyn, MD, MPH, MSTMH, COL, MC, USA (Ret.) Oral History Interview Transcript Part 3
Creators: name: Uniformed Services University of the Health Sciences
Publisher: name: University Archives, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Year: 2006
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences
classificationCode: 6.1
subject: FOS: History and archaeology

description: USU Oral History Interview Transcript
Dr. Craig H. Llewellyn, MD, MPH, MSTMH, COL, MC, USA (Ret.)
Commandant
Professor and Chair, Military and Emergency Medicine
Emeritus Professor, Military and Emergency Medicine
Director, Center for Disaster and Humanitarian Assistance Medicine
05-2006
Interviewed by Karen Caron
Dispersal of recent sediments and mine tailing in a shallow-silled fjord, Rupert Inlet, British Columbia
Creators: name: Johnson, Ronald Dwight
Publisher: name: University of British Columbia
Year: 2010

description: Rupert Inlet (fjord) is the site of large-scale submarine disposal of mine tailing and waste rock. This thesis considers the pre-operational condition and the initial two years of operation. Repetitive seismic surveys, grain size analysis from cores and samples, bottom current measurements together with geologic, topographic and oceanographic considerations are used to establish the natural erosional-depositional pattern and its effect on tailing distribution. Connection of Quatsino Sound to the Holberg-Rupert basin via Quatsino Narrows is a post-glacial feature which initiated the present sedimentation regime. Prior deposits, flat-lying clayey silt, were eroded by bottom currents originating at the Narrows, moved up inlet then re-deposited, generally in Holberg Inlet above Coal Harbour and in Rupert Inlet off the present Mine site. Bottom currents result from the incursion of flood tide water through Quatsino Narrows into the basin. Density dictates the intrusion level into the indigenous water column, while tide height and range contribute to the velocity of resulting currents. Water above the intrusion level moves headward, while water below that level forms counter-currents in Rupert and Holberg inlets which are convergent below the Narrows. Release of pressures built up during flood tide causes strong up-inlet bottom currents on early ebb tide. Maximum bottom currents are theorized as occurring when the flood tide water is denser than all the basin water. Currents are more persistent up inlet, but both up and down inlet commonly exceed 50 cm/sec and occasionally 100 cm/sec The theoretical maximum up-inlet current may approach 300 cm/sec Sediment grain size and sorting indicate that maximum currents below the Quatsino Narrows extend more strongly up Rupert Inlet. While tailing deposition is widespread throughout the basin and occasionally observed being entrained out Quatsino Narrows on ebb tide, greater than 90% is restricted to Rupert Inlet. Below the outfall pipe tailing have caused slides damming the bottom of the inlet and usefully ponding tailing. Tailing are at uniform grade from the fan to Quatsino Narrows, with maximum winnowing by currents in the lower reach. Natural sedimentation attempts to confine the tailing to Rupert Inlet. This desired effect is thwarted by too much fine tailing being allowed to enter the water column. Further study of current structure of the water column and of density relationship on either side of the sill is necessary. Modification of engineering design may accomplish lower turbidity levels The monitoring program has provided the type of multi-disciplinary data required for environmental evaluation of inlets.
Feature matching for multi-epoch historical aerial images
Creators: name: Zhang, Lulin
name: Rupnik, Ewelina
name: Pierrot-Deseilligny, Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Historical imagery is characterized by high spatial resolution and stereo-scopic acquisitions, providing a valuable resource for recovering 3D land-cover information. Accurate geo-referencing of diachronic historical images by means of self-calibration remains a bottleneck because of the difficulty to find sufficient amount of feature correspondences under evolving landscapes. In this research, we present a fully automatic approach to detecting feature correspondences between historical images taken at different times (i.e., inter-epoch), without auxiliary data required. Based on relative orientations computed within the same epoch (i.e., intra-epoch), we obtain DSMs (Digital Surface Model) and incorporate them in a rough-to-precise matching. The method consists of: (1) an inter-epoch DSMs matching to roughly co-register the orientations and DSMs (i.e, the 3D Helmert transformation), followed by (2) a precise inter-epoch feature matching using the original RGB images. The innate ambiguity of the latter is largely alleviated by narrowing down the search space using the co-registered data. With the inter-epoch features, we refine the image orientations and quantitatively evaluate the results (1) with DoD (Difference of DSMs), (2) with ground check points, and (3) by quantifying ground displacement due to an earthquake. We demonstrate that our method: (1) can automatically georeference diachronic historical images; (2) can effectively mitigate systematic errors induced by poorly estimated camera parameters; (3) is robust to drastic scene changes. Compared to the state-of-the-art, our method improves the image georeferencing accuracy by a factor of 2. The proposed methods are implemented in MicMac, a free, open-source photogrammetric software.
description: 34 pages