cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Effects of Hypoxia on Human Adipose Tissue Lipid Storage and Mobilization Functions: From Primary Cell Culture to Healthy Men
Creators: name: Mahat, Bimit
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Hypoxia
Triglyceride
Human adipose tissue lipid metabolism
Metabolic disorders

description: Adipose tissue plays a central role in the regulation of lipid storage and mobilization. A tight control between adipose tissue lipid storage and mobilization functions must be exerted to prevent an overload of lipids at other organs such as the heart, liver and skeletal muscles, and favor the risk of developing metabolic disorders, such as Type 2 diabetes and cardiovascular diseases (CVD). There is strong evidence from animal studies that low oxygen levels (hypoxia) are noted in adipose tissue as the mass of the organ excessively expands and, in turn, exacerbates some adipose tissue functions. Whether hypoxia exposure, which could be derived from reduced environmental oxygen availability, disease or a combination of both, affects adipose tissue lipid storage and mobilization functions in humans is not well known. Using in vitro and in vivo approaches, this thesis aimed at characterizing the effects of hypoxia on human adipose tissue lipid storage and lipid mobilization functions. Study I investigated how hypoxia can modulate human adipose functions such as lipid storage and lipid mobilization in vitro. Study II examined whether acute intermittent hypoxia, which simulates obstructive sleep apnea, affects adipose tissue lipid storage/mobilization functions and triglyceride levels in healthy young men in postprandial state. Study III tested the effect of an acute 6-hour continuous exposure to hypoxia (fraction of inspired oxygen (FIO2) = 0.12)) on plasma triglyceride levels in healthy young men in the fasting state. Study I indicates that both acute (24h) and chronic (14d) hypoxia (3%, and 10% O2) modulate human adipose tissue lipid storage and mobilization functions in a different manner. Study II demonstrates that acute exposure to intermittent hypoxia (6h) is sufficient to increase plasma non-esterified fatty acids (NEFA) levels, as well as insulin levels, but does not alter circulating triglyceride or subcutaneous adipose tissue lipid storage and/or mobilization capacity ex vivo in healthy men. Study III shows that acute exposure to normobaric hypoxia increases circulating NEFA and glycerol concentrations but did not translate in altering circulating triglycerides in fasting healthy men. In conclusion, our observations suggest that an exposure to reduced oxygen levels impairs human adipose tissue storage and/or mobilization functions, a phenomenon known in the development of metabolic disorders, such as Type 2 diabetes and CVD.
Towards a General Logic Model for Recreational Youth Development Programs
Creators: name: Webb, Evan
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Positive Youth Development
Logic Model
Recreation
Community
Best Practices

description: Recreational organizations that deliver activities to youth within their communities can provide an effective setting for positive youth development (PYD) endeavours due to being fun, engaging, and an environment where skill-building is inherent. However, not all recreational organizations offering PYD aimed programs are successful and many are cancelled after a short amount of time. A framework or guide for (1) promoting PYD through community recreation and (2) evaluating and identifying PYD outcomes does not yet exist. This research seeks to develop a model to inform recreational program design to bring about positive developmental outcomes in youth participants using empirical data collected from three successful organizations. Both one-on-one interviews and a focus group with youth participants and adult staff were utilized following a qualitative multiple case study approach. Data collected was concerned with the positive developmental outcomes experienced by youth participants in the organizations and mechanisms used to realize these outcomes. The key themes, derived through inductive and deductive analyses, are presented as a five-step logic model. These themes help identify the intended results of programs along with the resources and processes needed to achieve these results, thus making this study’s findings easy to integrate into recreational programming. The model’s process factors included a series of inputs (i.e., contextual factors and external assets) and activities (i.e., direct and indirect strategies). Findings identified as intended PYD outcomes included outputs (i.e., objective measurable indicators), short-term outcomes (i.e., life skills), and long-term impacts (i.e., the four Cs including life skill transfer and contribution). This study elaborates on concepts identified in previous research that are conducive to PYD while bringing them together into a framework for designing recreational programs with the goal of promoting positive developmental outcomes in youth. However, further testing through quantitative, longitudinal, and intervention research may be needed.
Beliefs about Self-Compassion (Chwyl, Chen, & Zaki, 2020)
Creators: name: Chwyl, Christina
name: Chen, Patricia
name: zaki, jamil
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: Data and Code for “Beliefs about Self-Compassion: Implications for Coping and Self-Improvement”. Authors: Chwyl*, Chen*, and Zaki (2020)
ASSESSMENT AND RE-TREATMENT OF RESILON OBTURATION SYSTEM; PART 1: RESILON: ASSESSMENT OF DEGRADED FILLING MATERIAL IN NON-HEALED CASES; PART 2: RESILON: A CASE SERIES OF RETREATMENTS OF NON- HEALED CASES
Creators: name: Payne, Lesleigh
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Resilon obturation system was discontinued following its introduction as an alternative to traditional gutta percha and sealer. In-vitro models support anecdotal reports of degraded Resilon filling material. This may represent a significant health concern for the patient. The aim of this study was to determine the proportion of Resilon degradation in non-healed endodontic cases and to present a case series describing retreatments of non-healed Resilon obturated teeth. Patients previously treated with Resilon (R) or Gutta-Percha (GP) that had a non-healed canal that needed a retreatment were enrolled. The proportion of degraded filling material was statistically significantly different between R and GP treated groups (p=.0003) with 78% of R canals being degraded compared to 0% of GP canals. The difference in the proportionality of degradation between the two materials was marginally significant (p=.054) when dichotomized time to follow-up and presence of an orifice barrier were controlled for in the multivariate analysis.
An Atomistic Study of Diffusion-Mediated Plasticity and Creep using Phase Field Crystal Methods
Creators: name: Berry, Joel
name: Rottler, Jörg
name: Sinclair, Chad W.
name: Provatas, Nikolas
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The nonequilibrium dynamics of diffusion-mediated plasticity and creep in materials subjected to constant load at high homologous temperatures is studied atomistically using Phase Field Crystal (PFC) methods. Creep stress and grain size exponents obtained for nanopolycrystalline systems, $m \simeq 1.02$ and $p \simeq 1.98$, respectively, closely match those expected for idealized diffusional Nabarro-Herring creep. These exponents are observed in the presence of significant stress-assisted diffusive grain boundary migration, indicating that Nabarro-Herring creep and stress-assisted boundary migration contribute in the same manner to the macroscopic constitutive relation. When plastic response is dislocation-mediated, power law stress exponents inferred from dislocation climb rates are found to increase monotonically from $m \simeq 3$, as expected for generic climb-mediated natural creep, to $m \simeq 5.8$ as the dislocation density $ρ_d$ is increased beyond typical experimental values. Stress exponents $m \gtrsim 3$ directly measured from simulations that include dislocation nucleation, climb, glide, and annihilation are attributed primarily to these large $ρ_d$ effects. Extrapolation to lower $ρ_d$ suggests that $m \simeq 4-4.5$ should be obtained from our PFC description at typical experimental $ρ_d$ values, which is consistent with expectations for power law creep via mixed climb and glide. The anomalously large stress exponents observed in our atomistic simulations at large $ρ_d$ may nonetheless be relevant to systems in which comparable densities are obtained locally within heterogeneous defect domains such as dislocation cell walls or tangles.
description: 14 pages, 10 figures
What holds your attention?: the neural effects of memory on attention
Creators: name: Parks, Emily Leonard
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: The allocation of attention, including the initial orienting and the subsequent dwell-time, is affected by several bottom-up and top-down factors. How item-memory affects these processes, however, remains unclear. In four behavioral experiments, we investigated whether item-memory affects attentional dwell time by using a modified version of the attentional blink (AB) paradigm. Our results revealed that the AB was significantly affected by memory-status (novel versus old), but critically this effect depended on the ongoing memory context. To directly examine the neural effects of memory and memory context on attentional allocation, we recorded event-related potentials (ERPs) while subjects performed a modified cuing paradigm. Our results revealed that memory significantly affects target processing at both early and late stages of analysis. Specifically, targets following memorially unique, old (previously studied) cues showed increased visual processing and faster reaction times compared to targets following non-unique cues. These data provide new evidence that memory affects attention at the neural level, and that this effect occurs at early visual processing levels (as indexed by the P1) and at higher order stages of processing (as indexed by the P300).
Cluster-Seeking James-Stein Estimators
Creators: name: Srinath, K. Pavan
name: Venkataramanan, Ramji
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper considers the problem of estimating a high-dimensional vector of parameters $\boldsymbolθ \in \mathbb{R}^n$ from a noisy observation. The noise vector is i.i.d. Gaussian with known variance. For a squared-error loss function, the James-Stein (JS) estimator is known to dominate the simple maximum-likelihood (ML) estimator when the dimension $n$ exceeds two. The JS-estimator shrinks the observed vector towards the origin, and the risk reduction over the ML-estimator is greatest for $\boldsymbolθ$ that lie close to the origin. JS-estimators can be generalized to shrink the data towards any target subspace. Such estimators also dominate the ML-estimator, but the risk reduction is significant only when $\boldsymbolθ$ lies close to the subspace. This leads to the question: in the absence of prior information about $\boldsymbolθ$, how do we design estimators that give significant risk reduction over the ML-estimator for a wide range of $\boldsymbolθ$? In this paper, we propose shrinkage estimators that attempt to infer the structure of $\boldsymbolθ$ from the observed data in order to construct a good attracting subspace. In particular, the components of the observed vector are separated into clusters, and the elements in each cluster shrunk towards a common attractor. The number of clusters and the attractor for each cluster are determined from the observed vector. We provide concentration results for the squared-error loss and convergence results for the risk of the proposed estimators. The results show that the estimators give significant risk reduction over the ML-estimator for a wide range of $\boldsymbolθ$, particularly for large $n$. Simulation results are provided to support the theoretical claims.
description: Appeared in IEEE Transactions on Information Theory
Exponential Decay of Matrix $Φ$-Entropies on Markov Semigroups with Applications to Dynamical Evolutions of Quantum Ensembles
Creators: name: Cheng, Hao-Chung
name: Hsieh, Min-Hsiu
name: Tomamichel, Marco
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: Mathematical Physics (math-ph)
subject: Operator Algebras (math.OA)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In the study of Markovian processes, one of the principal achievements is the equivalence between the $Φ$-Sobolev inequalities and an exponential decrease of the $Φ$-entropies. In this work, we develop a framework of Markov semigroups on matrix-valued functions and generalize the above equivalence to the exponential decay of matrix $Φ$-entropies. This result also specializes to spectral gap inequalities and modified logarithmic Sobolev inequalities in the random matrix setting. To establish the main result, we define a non-commutative generalization of the carré du champ operator, and prove a de Bruijn's identity for matrix-valued functions. The proposed Markov semigroups acting on matrix-valued functions have immediate applications in the characterization of the dynamical evolution of quantum ensembles. We consider two special cases of quantum unital channels, namely, the depolarizing channel and the phase-damping channel. In the former, since there exists a unique equilibrium state, we show that the matrix $Φ$-entropy of the resulting quantum ensemble decays exponentially as time goes on. Consequently, we obtain a stronger notion of monotonicity of the Holevo quantity - the Holevo quantity of the quantum ensemble decays exponentially in time and the convergence rate is determined by the modified log-Sobolev inequalities. However, in the latter, the matrix $Φ$-entropy of the quantum ensemble that undergoes the phase-damping Markovian evolution generally will not decay exponentially. This is because there are multiple equilibrium states for such a channel. Finally, we also consider examples of statistical mixing of Markov semigroups on matrix-valued functions. We can explicitly calculate the convergence rate of a Markovian jump process defined on Boolean hypercubes, and provide upper bounds of the mixing time on these types of examples.
Integrated community care delivered by public health care and social care systems: a realist synthesis
Creators: name: Allaire, Jean-François
name: Thiam, Yacine
name: Morin, Paul
name: Zomahoun, Hervé
name: Rheault, Nathalie
name: Lacasse, Francis
name: Doré, Chantal
name: Hyppolite, Shelley-Rose
name: Garon, Suzanne
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Social and Behavioral Sciences

description: Integrated Community Care (ICC) is defined as an interweaving of territory scale and time scale health care and social care interventions implemented in proximity (spatial and relational) in an interdisciplinary and cross-sectoral manner. However, the deployment of in public health and social care networks can be complex owing to their broad mandate and the complexity of their management and accountability. Therefore, we aim to describe integrated community care in order to shed light on how they work, for whom and in what circumstances. We will conduct a realist synthesis to design a flexible and scalable theory of the functioning of ICC deployed by public health and social care networks. To do so, a two-phase approach will be used: a systematic review on the topic of interest; and co-development and refinement of theory with local and international stakeholders.
THE SOIL OF BARNFIELD , Rothamsted Experimental Station Report for 1971 Part 2
Creators: name: B. W. AVERY, P. BULLOCK
Publisher: name: Lawes Agricultural Trust
Year: 1972
Subjects: subject: rothamsted research

description: Scanned PDF of THE SOIL OF BARNFIELD , part of Rothamsted Experimental Station Report for 1971 Part 2
THE AGDELL EXPERIMENT, 1848-1970 ESTIMATES OF THE P AND K ACCUMULATED FROM FERTILISER DRESSINGS GIVEN BETWEEN 1848 AND 1951, THEIR RECOVERY BY GRASS BETWEEN 1958 AND 1970, AND THEIR EFFECT ON THE RESPONSE BY GRASS TO NEW DRESSINGS OF P AND K, Rothamsted Experimental Station Report for 1971 Part 2
Creators: name: A. E. JOHNSTON And A. PENNY
Publisher: name: Lawes Agricultural Trust
Year: 1972
Subjects: subject: rothamsted research
subject: phosphorous
subject: potassium

description: Scanned PDF of THE AGDELL EXPERIMENT, 1848-1970 ESTIMATES OF THE P AND K ACCUMULATED FROM FERTILISER DRESSINGS GIVEN BETWEEN 1848 AND 1951, THEIR RECOVERY BY GRASS BETWEEN 1958 AND 1970, AND THEIR EFFECT ON THE RESPONSE BY GRASS TO NEW DRESSINGS OF P AND K, part of Rothamsted Experimental Station Report for 1971 Part 2
THE SOILS AT SAXMUNDHAM EXPERIMENTAL STATION, Rothamsted Experimental Station Report for 1971 Part 2
Creators: name: C. A. H. HODGE
Publisher: name: Lawes Agricultural Trust
Year: 1972
Subjects: subject: rothamsted research
subject: saxmundham experimental station

description: Scanned PDF of THE SOILS AT SAXMUNDHAM EXPERIMENTAL STATION, part of Rothamsted Experimental Station Report for 1971 Part 2
title: Einheitliche Versorgungs- und Ansteuerungselektronik für konventionelle und LED-basierte UV-Aggregrate zur Vorbereitung und Beschleunigung der Umrüstung auf umweltschonende LED-Technologie im Bereich der industriellen Lackhärtung (LEDprepared)
title: Abschlussbericht zum Vorhaben mit dem Aktenzeichen 23693/01-21/2, gefördert durch die Deutsche Bundesstiftung Umwelt
titleType: Subtitle
Creators: name: Kirschner, Thomas
name: Lechler, Stefan
Publisher: name: IST METZ GmbH
Year: 2017

description: Die weltweit installierte Gesamtleistung konventioneller UV-Bestrahlungsaggregate im Bereich intermittie-render Bestrahlungsprozesse beträgt ca. 128 MW, was im Ein-Schichtbetrieb (1700 h/a) mit einem jährli-chen Energieverbrauch von ca. 218 GWh einhergeht. Von diesem Energieverbrauch könnten mindesten 25 % und teilweise bis zu 90 % durch Einsatz der UV-LED-Technologie eingespart werden. Ebenfalls könnte durch den Einsatz der UV-LED-Technologie eine signifikante Menge an umweltschädlichem Quecksilber eingespart werden. Der flächendeckende Einsatz der UV-LED-Technologie im Bereich inter-mittierender Lackhärtungsprozesse scheitert derzeit vor allem daran, dass es keine für beide UV-Techno-logien kompatible, elektrische Versorgungsstruktur gibt. Der wesentliche innovative Ansatz des vorliegen-den Projektes vereinigt die elektrische Versorgung und Ansteuerung konventioneller UV-Gasentladungs-strahler und von UV-LED-Arrays. Auf diese Art und Weise werden Anwender der UV-Technologie in der Zukunft mit nur einer Versorgungsinfrastruktur beide Technologien parallel betreiben können oder in der Lage sein, ohne großen Aufwand und mit reduziertem Invest von der konventionellen auf die energiespa-rendere und umweltschonende UV-LED-Technologie zu wechseln. So werden die derzeit vorhandenen Markteintrittsbarrieren für die UV-LED-Technologie überwunden und die energetischen Einsparpotenziale der UV-LED-Technologie kurz- bis mittelfristig erschlossen
Origin and Enhancement of Spin Polarization Current in Diluted Magnetic Oxides by Oxygen Vacancies and Nano Grain Size
Creators: name: Chou, Hsiung
name: Yang, Kung-Shang
name: Tsao, Yao-Chung
name: Dwivedi, G. D.
name: Lin, Cheng-Pang
name: Sun, Shih-Jye
name: Lin, L. K.
name: Lee, S. F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spin polarized current is the main ingredient of diluted magnetic oxides due to its potential manipulation in spintronic devices. However, most research has focused on ferromagnetic properties rather than polarization of electric current, because direct measurements were difficult and the origin of spin polarized currents has yet to be fully understood. The method to increase the spin polarized current percentage is beyond practical consideration at the present status. To target this problem, we focus on the role of oxygen vacancies and nano grain size on the spin polarized current, which are controlled by growing the Co-doped ZnO thin-films at room temperature in a reducing atmosphere [Ar + (1% ~ 30%) H2]. We found that the conductivity increases with an increase in oxygen vacancies via two independent channels: the variable range hopping (VRH) within localized states and the itinerant transport in the conduction band. The Andreev Reflection measurements prove that the VRH conduction is equivalent to spin polarized current. Transport measurements show that the best way to increase the VRH content, or the percentage of spin polarized current, is to increase oxygen vacancy concentration and to reduce grain size and lattice constants of the films.
Selecting watershed restoration strategies by using the analytical hierarchy process
Creators: name: Bolte, Robin Jo Eddy
Publisher: name: University of North Carolina at Chapel Hill
Year: 2011

description: While the 1972 Clean Water Act and subsequent Federal judicial rulings indisputably demand TMDL development for assessed impaired waterways, TMDL implementation is less clear. Neither the Federal nor North Carolina TMDL programs prescribe by law or regulation a TMDL implementation plan (i.e. watershed restoration plan) to restore watershed quality. This work addresses the implementation of a TMDL for regulating and mitigating microbial contamination in the Northeast Creek watershed by applying a semi-quantitative Analytical Hierarchy Process (AHP) for the selection of Best Management Practice (BMP) strategies. An AHP decision matrix was developed, and each BMP strategy was compared and weighed against each selected criterion. Results of the analysis indicate a preference for diverse best management practice strategies, with an emphasis on adult stormwater education, stream buffers and enforcement, for successful implementation of a fecal coliform TMDL for Northeast Creek in Durham, North Carolina.
Regularity of the free boundary for two-phase problems governed by divergence form equations and applications
Creators: name: De Silva, Daniela
name: Ferrari, Fausto
name: Salsa, Sandro
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study a class of two-phase inhomogeneous free boundary problems governed by elliptic equations in divergence form. In particular we prove that Lipschitz or flat free boundaries are $C^{1,γ}$. Our results apply to the classical Prandtl-Bachelor model in fluiddynamics.
description: 28 pages. arXiv admin note: text overlap with arXiv:1210.7226, arXiv:1304.0406
Unprecedented silicon(II)-> calcium complexes with N-heterocyclic silylenes
Creators: name: Blom, Burgert
name: Klatt, Günter
name: Gallego, Daniel
name: Tan, Gengwen
name: Drieß, Matthias
Publisher: name: Technische Universität Berlin
Year: 2015
Subjects: subject: 540 Chemie und zugeordnete Wissenschaften

description: The first N-heterocyclic silylene (NHSi) complexes of any s-block element to date are reported for calcium: [(eta(5)-C5Me5)(2)Ca
The Gamma-Ray Emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy PKS 2004-447 II. The Radio View
Creators: name: Schulz, R.
name: Kreikenbohm, A.
name: Kadler, M.
name: Ojha, R.
name: Ros, E.
name: Stevens, J.
name: Edwards, P. G.
name: Carpenter, B.
name: Elsässer, D.
name: Gehrels, N.
name: Großberger, C.
name: Hase, H.
name: Horiuchi, S.
name: Lovell, J. E. J.
name: Mannheim, K.
name: Markowitz, A.
name: Müller, C.
name: Phillips, C.
name: Plötz, C.
name: Quick, J.
name: Trüstedt, J.
name: Tzioumis, A. K.
name: Wilms, J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma-ray detected radio-loud narrow-line Seyfert 1 (g-NLS1) galaxies constitute a small but interesting sample of the gamma-ray loud AGN. The radio-loudest g-NLS1 known, PKS 2004-447, is located in the southern hemisphere and is monitored in the radio regime by the multiwavelength monitoring program TANAMI. We aim for the first detailed study of the radio morphology and long-term radio spectral evolution of PKS 2004-447, which are essential to understand the diversity of the radio properties of g-NLS1s. The TANAMI VLBI monitoring program uses the Australian Long Baseline Array (LBA) and telescopes in Antarctica, Chile, New Zealand, and South Africa to monitor the jets of radio-loud active galaxies in the southern hemisphere. Lower resolution radio flux density measurements at multiple radio frequencies over four years of observations were obtained with the Australia Telescope Compact Array (ATCA). The TANAMI VLBI image at 8.4 GHz shows an extended one-sided jet with a dominant compact VLBI core. Its brightness temperature is consistent with equipartition, but it is an order of magnitude below other g-NLS1s with the sample value varying over two orders of magnitude. We find a compact morphology with a projected large-scale size <11 kpc and a persistent steep radio spectrum with moderate flux-density variability. PKS 2004-447 appears to be a unique member of the g-NLS1 sample. It exhibits blazar-like features, such as a flat featureless X-ray spectrum and a core dominated, one-sided parsec-scale jet with indications for relativistic beaming. However, the data also reveal properties atypical for blazars, such as a radio spectrum and large-scale size consistent with Compact-Steep-Spectrum (CSS) objects, which are usually associated with young radio sources. These characteristics are unique among all g-NLS1s and extremely rare among gamma-ray loud AGN.
description: 11 pages, 4 figures, accepted by Astronomy & Astrophysics
Orderability and Dehn filling
Creators: name: Culler, Marc
name: Dunfield, Nathan M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M

description: Motivated by conjectures relating group orderability, Floer homology, and taut foliations, we discuss a systematic and broadly applicable technique for constructing left-orders on the fundamental groups of rational homology 3-spheres. Specifically, for a compact 3-manifold $M$ with torus boundary, we give several criteria which imply that whole intervals of Dehn fillings of $M$ have left-orderable fundamental groups. Our technique uses certain representations from $π_1(M)$ into $\widetilde{\mathrm{PSL}_2 \mathbb{R}}$, which we organize into an infinite graph in $H^1(\partial M; \mathbb{R})$ called the translation extension locus. We include many plots of such loci which inform the proofs of our main results and suggest interesting avenues for future research.
description: 52 pages, 14 figures. V2: New conclusion (c) in Theorem 1.5, based on the added Lemma 8.4. V3: Correct proof of Claim 7.2. V4: To appear in Geometry and Topology. V5: Figure numbering changed to match published version
Relative roles of sea level and climate change in the evolution of the stratigraphic architecture of the northeastern continental margin of the South China Sea
Creators: name: Callihan, Laura Dawn
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Nearly 1900 km of high resolution seismic reflection data and more than 800 km of chirp and side-scan sonar data were acquired on the northeastern margin of the South China Sea. The evolution of the margin from a carbonate dominated system to a siliciclastic dominated system was facilitated by changes in amplitude and frequency of sea level fluctuations and changes in the East Asian monsoon. These changes impacted accommodation space and sediment supply, which together controlled the development of the stratigraphic architecture. As recently as the early Pliocene, the margin evolved from a carbonate ramp to a carbonate rim system. After 1.0 Ma, a tipping point was crossed and siliciclastic sedimentation began to dominate the margin. An increase of clastics to the margin from the intensified summer monsoon, combined with longer exposure of the entire margin, terminated widespread carbonate deposition and initiated dominant siliciclastic sedimentation on the margin.
DEVELOPMENT OF MAGNETRON SPUTTERING Nb3Sn TARGETS VIA LIQUID TIN DIFFUSION
Creators: name: Zanierato Matteo
Publisher: name: Zenodo
Year: 2021
Subjects: Nb3Sn
Sputtering
Superconductor
Liquid Tin Diffusion LTD
SRF

description: The performance of the Nb bulk cavities has now reached the theoretical limits imposed by the material. It is necessary to look at other superconducting materials, among which the most promising is Nb3Sn. The deposition of Nb3Sn on copper cavities is interesting for the higher thermal conductivity of copper compared to common Nb substrates. The better heat exchange would allow the use of cryocoolers reducing cryogenic costs and the risk of thermal quench [1]. Magnetron sputtering technology allows the deposition of Nb3Sn on substrates different than Nb, however the coating of substrates with complex geometry (such as elliptical cavities) may require target with non-planar shape, difficult to realize with classic powder sintering techniques. In this work, the possibility of using the Liquid Tin Diffusion (LTD) technique to produce sputtering targets is explored. The LTD technique is a wire fabrication technology, already developed in the past at LNL for SRF applications [2], that allows the deposition of very thick and uniform coating on Nb substrates even with complex geometry [3]. Improvements in LTD process, proof of concept of a single use LTD target production, and characterization of the Nb3Sn film coated by DC magnetron sputtering with these innovative targets are reported in this thesis work.
STUDIO E SVILUPPO DELLE TECNICHE DI DEPOSIZIONE DI FILM SOTTILI DI Nb3Sn PER APPLICAZIONI IN CAVITA' RISONANTI
Creators: name: Zanierato Matteo
Publisher: name: Zenodo
Year: 2020
Subjects: Sputtering, Nb3Sn, Liquid Tin Dipping, Tin Vapour Diffusion, Cavità Acceleratrici

description: La fisica delle particelle si sta spingendo verso l’esplorare range di energia sempre più elevati, che richiedono strutture acceleranti sempre più performanti per essere sostenibili. Le performance delle cavità acceleratrici in Nb bulk attualmente hanno ormai raggiunto i limiti teorici imposti dal materiale stesso e risulta pertanto necessario guardare ad altri materiali superconduttori, tra i quali il più promettente è il Nb3Sn. Un superconduttore è caratterizzato dalla temperatura critica (Tc) sotto la quale esibisce resistenza elettrica nulla. In radiofrequenza sussistono ugualmente delle perdite dovute alla resistenza superficiale. Il Nb3Sn comporta una temperatura di esercizio di 18K doppia rispetto al Nb, questa caratteristica riduce la resistenza superficiale, consentendo l’aumento del campo accelerante massimo oltre a diminuire i costi criogenici. L’alto campo magnetico critico di 24T rende inoltre questo superconduttore adatto all’applicazione in cavità per la rilevazione di assioni. In questo lavoro è adottata la tecnica denominata Liquid Tin Dipping (LTD) per la creazione di film spessi di Nb3Sn su substrati di Nb a geometria complessa. Lo scopo principale del lavoro è la realizzazione di target per deposizioni di Nb3Sn via Magnetron Sputtering in cavità di rame a geometria ellittica. Data la flessibilità della tecnica, l’LTD è stata anche ottimizzata per il futuro ricoprimento della cavità per assioni. Metodologie di processo differenti sono state indagate per minimizzare le fasi indesiderate e per aumentare lo spessore finale del film (parametro critico in un target). Si è studiato l’effetto del tempo di dipping e del tempo di annealing, sviluppando un processo a più cicli (in presenza e/o assenza di vapori di stagno) per regolare la quantità media di Sn e variare i rapporti tra le fasi ottenute. Infine, è stata verificata l’efficacia di pretrattamenti di anodizzazione, già utilizzati nel processo Siemens (crescita di Nb3Sn per diffusione di stagno da fase vapore), nel favorire la nucleazione, producendo un film della fase desiderata più uniforme lungo tutta la superficie del campione. Ogni metodologia o variazione del processo è studiata mediante caratterizzazioni SEM, EDS e diffrattometria XRD; queste hanno permesso di valutare come le variabili di processo influiscano sulle caratteristiche finali del coating. Le analisi svolte dimostrano come è possibile ottenere film stechiometrici di Nb3Sn, privi di fasi spurie, partendo da substrati di Nb pre-anodizzati e rivestendoli mediante la metodologia ibrida, che prevede una doppio annealing in situ dopo il processo di dipping: un primo annealing in presenza di vapori di stagno, ed un successivo annealing in ultra alto vuoto.
Mattresses, folders and internally displaced persons: towards an anthropology of “failure”
Creators: name: Aparicio, Juan Ricardo
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The Internally Displaced Persons (IDPs) problem area emerged as an international concern for institutions, goverments and communities of experts in the mid 1990s. In the following pages, I historicize both the conditons of possibility and actualization of the IDPs by linking this formation to a set events necessary for its appearance both as an object of knowledge and intervention during the years of 1992-1998. I analyze how this ensemble of discourses was introduced in Colombia in 1995, how they have operated through institutional interventions, and what have been their side-effects. In my conclusions, I discuss how these practices are also part of the present neoliberal govermentality by which caring for and protecting specific communities are both understood under specific rationalities. I end by suggesting that both social movements and grassroots organizations are precisely resisting these rationalities through the defense of local and collective ethical projects.
Der genetische Fingerabdruck zur Personenidentifizierung im Strafverfahren
Zur Frage des gesetzgeberischen Handlungsbedarfs
Creators: name: Krieglstein, Marco
Publisher: name: Universität Tübingen
Year: 1994
Subjects: subject: Strafverfahren , Genetischer Fingerabdruck
subject: 340

description: Die vorliegende Arbeit analysiert als Ausgangspunkt die für die praktische Anwendung mit dem genetischen Fingerabdruck relevanten medizinisch-biologischen Fakten und nimmt eine darauf aufbauende juristische Bewertung vor. Aus diesem Grunde ist die vorliegende Arbeit wie folgt strukturiert: Im ersten Teil erfolgt die Einordnung des g.F. in das biologische Wissenschaftssystem sowie eine Übersicht der Anwendungsmöglichkeiten. Teil 2 systematisiert den aktuellen juristischen Diskussionsstand. Es folgen die für die eigene Analyse erforderlichen biologischen Grundlagen (Teil 3) sowie die detaillierte Darstellung des Verfahrens (Teil 4). Daraus resultierend werden Vorteile (Teil 5) des Verfahrens sowie Fehlerquellen, Mißbrauchsgefahren und deren Abhilfemöglichkeiten (Teil 6/7) diskutiert. Die so gewonnenen Erkenntnisse bilden die Grundlage der abschließenden rechtlichen Bewertung mit Regelungsempfehlungen (Teil 8).
A Compact Expression for Periodic Instantons
Creators: name: Cherkis, Sergey A.
name: O'Hara, Clare
name: Zaitsev, Dmitri
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C07, 14D21

description: Instantons on various spaces can be constructed via a generalization of the Fourier transform called the ADHM-Nahm transform. An explicit use of this construction, however, involves rather tedious calculations. Here we derive a simple formula for instantons on a space with one periodic direction. It simplifies the ADHM-Nahm machinery and can be generalized to other spaces.
description: AMS-LaTeX, 19 pages
The effect of email communication on adherence and compliance in a cardiac rehabilitation exercise session
Creators: name: Simerly, Jamie
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: This study investigated the impact of weekly email communication and email content on attendance adherence and exercise prescription compliance in a cardiac rehabilitation program. Fifteen cardiac rehabilitation patients aged 36 to 87 (7 males, 8 females) volunteered and were randomly assigned into one of three groups (informational email group, motivational email group, and control group). The informational email group received weekly emails with precise programmatic information, the motivational group received weekly emails with generic motivational sayings, and the control group received no emails. During the 12-week intervention, subjects'; exercise session attendance and attained heart rate, rating of perceived exertion, and duration at all exercise sessions were tracked. A one-way ANOVA found there was no difference in attendance adherence rates between groups (F = 3.161, p = 0.079). A 3 x 2 Chi Square test for independence found a significant difference between the three groups in heart rate compliance rates (X2(2, n = 540) = 19.5, p 2(2, n = 540) = 19.1, p 2(2, n = 540) = 6.1, p = 0.047).Descriptive statistics found the control group to have the highest compliance rates. A 2 x 2 Chi Square test for independence found a significant difference between the informational email group and the motivational email group in heart rate compliance(X2(1, n = 360) = 6.778, p = 0.009), rating of perceived exertion compliance(X2(1, n = 360) = 6.334, p = 0.012), and duration compliance (X2(1, n = 360) = 5.378, p = 0.020). In summary, email communication did not improve attendance adherence but an informational email may improve exercise prescription compliance more than a generic motivational email.
Category dimensions of spontaneous face perception
Creators: name: Flade, Felicitas
name: Imhoff, Roland
name: Schaefer, Simon
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: This study explores which are the dimensions people use to rate similarity of faces without using predefined dimensions. The focal analysis is a property fitting analysis to match ratings on verbal candidate dimensions to statistical dimensions resulting from a multidimensional scaling analysis (MDS).
Dynamic Contracting with Long-Term Consequences
Creators: name: Vasama, Suvi
Publisher: name: Humboldt-Universität zu Berlin
Year: 2016
Subjects: subject: Dynamic moral hazard
subject: managerial turnover
subject: pay for performance
subject: 330 Wirtschaft

description: We examine optimal managerial compensation and turnover policy in a principal-agent model in which the firm output is serially correlated over time. The model captures a learning-by-doing feature: higher effort by the manager increases the quality of the match between the firm and the manager in the future. The optimal incentive scheme entails an inefficiently high turnover rate in the early stages of the employment relationship. The optimal turnover probability depends on the past performance and the likelihood of turnover decreases gradually with superior performance. With good enough past performance, the turnover policy reaches efficiency; the manager is never retained if it is inefficient to do so. The manager’s compensation depends on the firm value and the optimal performance-compensation relation increases with past performance.
An Algorithm for Solving Linear Nonhomogeneous Quaternion-valued Differential Equations
Creators: name: Xia, Yong-Hui
name: Huang, Hai
name: Kou, Kit Ian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: In this paper we presents an algorithm for finding a solution of the linear nonhomogeneous quaternionic-valued differential equations. Moveover, several examples shows the feasibility of our algorithm.
description: We want to completely revsie this paper
Superradiance in static black hole spacetimes
Creators: name: Benone, Carolina L.
name: Crispino, Luís C. B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the absorption of a massive and charged scalar field in a Reissner-Nordström background. We compare our numerical results for the absorption cross section, obtained for arbitrary frequencies, with the low- and high-frequency limits. We find, in particular, that the total absorption cross section can be negative, showing that planar scalar waves can be superradiantly amplified by black holes.
Expansion dynamics in a one-dimensional hard-core boson model with three-body interactions
Creators: name: Ren, Jie
name: Wu, Yin-Zhong
name: Xu, Xue-Fen
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Using the adaptive time-dependent density matrix renormalization group method, we numerically investigate the expansion dynamics of bosons in a one-dimensional hard-core boson model with three-body interactions. It is found that the bosons expand ballistically with weak interaction, which are obtained by local density and the radius $R_n$. It is shown that the expansion velocity $V$, obtained from $R_n=Vt$, is dependent on the number of bosons. As a prominent result, the expansion velocity decreases with the enhancement of three-body interaction. We further study the dynamics of the system, which quenches from the ground state with two-thirds filling, the results indicate the expansion is also ballistic in the gapless phase regime. It could help us detect the phase transition in the system.
Fly Far, Lift More? What Patterns Exist Within Interindividual Capacity of Flight Performance Traits in Bombus impatiens?
Creators: name: Shewchenko, Tera
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Flight performance
Bumblebees
Insect flight
Foraging
Locomotion

description: Locomotion is central to the survival of many animal species; however large variation in performance, for example in speed or endurance, exists between individuals within a species. Using the bumblebee species, Bombus impatiens, I studied the extent of the variation in several flight performance traits and how they are associated. I first addressed how bumblebee workers vary in foraging effort and observed that only around half of the monitored individuals underwent foraging activity. Additionally, significant variation in metabolic rate between foragers and non-foragers was uncovered. I further investigated if such variation could be associated with flight performance capacity, such as an individual’s ability to carry a load, their flight speed and distance traveled, their wing morphology and kinematics, and their flight metabolic rate. These traits are commonly measured to characterize flight capacity in insects, however the links between them have yet to be investigated. Links between morphology, wing kinematics and peak metabolic rate previously uncovered in the literature were observed in my analysis, although variation in their scaling with body mass was detected. Vertical force scaled isometrically with body mass but was not related to it when expressed in on a mass specific basis (VF m-1g-1, where m is gravitation acceleration). In regard to forward flight speed, body mass does have an affect, however it alone does not have a great degree of explanatory power and other factors such as morphology and wing kinematics are likely to play a greater part in its determination. Finally, maximum flight speed had a significant relationship with total flight time. Together, these results demonstrate that some links do exist between flight performance traits, however links are not present between all traits and certain flight performance traits should be treated as independent of each other.
Thaw Slump Activity Via Close-range ‘Structure from Motion’ in Time-lapse Using Ground-based Autonomous Cameras
Creators: name: Armstrong, Lindsay Faye
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Permafrost
Structure from Motion
Change detection
M3C2
Trail cameras

description: Northwestern Arctic Canada is one of the most rapidly warming regions in the Arctic (Serreze et al., 2009). Retrogressive thaw slumps (RTS) are one of the most dramatic thermokarst features in permafrost terrain (Kokelj et al., 2013). Many studies have focused on describing the distribution of thermokarst landscapes (i.e., Olefeldt et al., 2016), as well as change in thermokarst terrain over the historical record (i.e., Kokelj and Jorgenson, 2013). However, improved high temporal and spatial resolution monitoring of thaw slump activity is required to enhance our understanding of factors governing their growth. Recent advances in aerial and ground-based Structure from Motion (SfM), a photogrammetry application, allow for temporal and spatial high-resolution characterization of landscape changes. This thesis explores two methods in SfM photogrammetry: 1) aerial imaging using an unmanned aerial vehicle (UAV) and 2) ground-based imaging using stationary multi-camera time-lapse installations, to derive high-resolution temporal and spatial data for change detection. A trend in mean elevation change was produced, and agrees with the RTS behaviour over the study period, which supports the viability of the proposed capture method. The lack of congruency in data range suggests need for further development in terms of analyses and differencing algorithms employed. The proposed method may be feasible for employment in other fields of science in which high temporal resolution change detection is desired. This proof of concept study was conducted at a small slump on the Peel Plateau, NWT, Canada, and aims to enhance understanding of the development and perpetuation of thaw slumps, to better anticipate landscape and ecosystem responses to future climate change.
Armed with an Eagle Feather Against the Parliamentary Mace: A Discussion of Discourse on Indigenous Sovereignty and Spirituality in a Settler Colonial Canada, 1990-2017
Creators: name: Swain, Stacie A.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Canada
Indigenous Sovereignty
Indigenous Spirituality
Sovereignty
Parliamentary Mace
Eagle Feather
Critical Religion
Critical Discourse Analysis
Settler Colonialism
Religious Studies
Indigenous Resistance
Religion
Elijah Harper
Idle No More
Indigenous-Canadian Relations
Canadian Governance
Indigenous Nationhood
Oka

description: Canada 150, or the sesquicentennial anniversary of Confederation, celebrates a nation-state that can be described as “settler colonial” in relation to Indigenous peoples. This thesis brings a Critical Religion and Critical Discourse Analysis methodology into conversation with Settler Colonial and Indigenous Studies to ask: how is Canadian settler colonial sovereignty enacted, and how do Indigenous peoples perform challenges to that sovereignty? The parliamentary mace and the eagle feather are conceptualized as emblematic and condensed metaphors, or metonyms, that assert and represent Canadian and Indigenous sovereignties. As a settler colonial sovereignty, established and naturalized partially through discourses on religion, Canadian sovereignty requires the displacement of Indigenous sovereignty. In events from 1990 to 2017, Indigenous people wielding eagle feathers disrupt Canadian governance and challenge the legitimacy of Canadian sovereignty. Indigenous sovereignty is (re)asserted as identity-based, oppositional, and spiritualized. Discourses on Indigenous sovereignty and spirituality provide categories and concepts through which Indigenous resistance occurs within Canada.