cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The importance of stimulus noise analysis for self-motion studies
Creators: name: Nesti, Alessandro
name: Beykirch, Karl A
name: MacNeilage, Paul R
name: Barnett-Cowan, Michael
name: Bülthoff, Heinrich H
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Biological sciences

description: Motion simulators are widely employed in basic and applied research to study the neural mechanisms of perception and action under inertial stimulations. In these studies, uncontrolled simulator-introduced noise inevitably leads to a mismatch between the reproduced motion and the trajectories meticulously designed by the experimenter, possibly resulting in undesired motion cues to the investigated system. An understanding of the simulator response to different motion commands is therefore a crucial yet often underestimated step towards the interpretation of experimental results. In this work, we developed analysis methods based on signal processing techniques to quantify the noise in the actual motion, and its deterministic and stochastic components. Our methods allow comparisons between commanded and actual motion as well as between different actual motion profiles. A specific practical example from one of our studies is used to illustrate the methodologies and their relevance, but this does not detract from its general applicability. Analyses of the simulator inertial recordings show direction-dependent noise and nonlinearity related to the command amplitude. The Signal-to-Noise Ratio is one order of magnitude higher for the larger motion amplitudes we tested, compared to the smaller motion amplitudes. Deterministic and stochastic noise components are of similar magnitude for the weaker motions, whereas for stronger motions the deterministic component dominates the stochastic component. The effect of simulator noise on animal/human motion sensitivity is discussed. We conclude that accurate analyses of a simulator motion are a crucial prerequisite for the investigation of uncertainty in self-motion perception.
description: 24 pages, 6 figures, 1 table
A Narrative Inquiry into the Experiences of Transitions into and out of Alberta Correctional Facilities for People Living with HIV
Creators: Wadams, Morgan
Publisher: name: University of Alberta Library
Year: 2023

In this monograph-style thesis, experiences of transitions into and out of Alberta correctional facilities for people living with HIV were explored using narrative inquiry. The inquiry is informed by my experiences of working as a registered nurse within an Alberta correctional facility: the questions and insights guiding the study are grounded in my experiences, which are discussed in my narrative beginnings. Approaching the participants as living storied lives on storied landscapes (Clandinin & Connelly, 2000), I negotiated relationships with them and came alongside them as they composed their ongoing identities and lives.

The study took place in a Western Canadian city over a one-and-a-half-year period from 2021 to 2022. Over this period, I regularly met with Kyle and Bruce, spending time with them in their diverse social contexts and places. I inquired into both men’s experiences of transitions as we co-composed field and interim research texts. Their narrative accounts were situated within the three-dimensional narrative inquiry framework of sociality (internal disposition and external conditions of experience), temporality (past, present, and future), and place, which opened opportunities to imagine and retell their stories as otherwise (Clandinin & Connelly, 2000). Transitions were conceptualized narratively, calling attention to the complexity and individuality of lives. Narrative threads resonated across Bruce’s and Kyle’s accounts, emphasizing relational agency as a way to shape a life, and that going into and out of correctional facilities is part of an ordinary life. Throughout the inquiry, insights into the practices of health, social, and justice practitioners supporting and caring for people living with HIV and a history of incarceration are highlighted. By re-imagining the possibilities of creating trusting relationships and developing agency in individuals, the inquiry reminds practitioners, policymakers, and scholars to be purposeful when attending to the wholeness and individuality of a life transitioning into and out of correctional facilities.
Personal Factors and Access to Businesses: Perceptions of People with Aphasia
Creators: Auch, Leah
Publisher: name: University of Alberta Library
Year: 2023

The current study investigated the relationship between participation at businesses (i.e., business access) and the personal factors (i.e., the identity, attitudes, and feelings) of people with aphasia (PWA). Five PWA were interviewed about their business experiences in Edmonton, Alberta, and how these experiences impacted and were impacted by their personal factors. Interviews were analyzed using qualitative content analysis and organized into six themes which represented this reciprocal relationship between business access experiences and personal factors. Three of the six themes were related to how personal factors impacted the business interaction: 1) participant expectations of businesses, 2) self-advocacy, and 3) participant perspectives on aphasia and disability. The other three themes represented the impact of business experiences on participant’s personal factors: 4) impact on thoughts and beliefs, 5) future expectations and actions, and 6) lasting feelings. Participants described ways that personal factors were supports and hinderances to their access to businesses, and ways that positive and negative business experiences impacted their personal factors. Ultimately, this study highlighted the need to consider personal factors in the research, assessment, intervention, and advocacy efforts with PWA in order to maintain a holistic perspective of the person with aphasia and promote their quality of life.
Exclusive production of $ρ$ meson in gamma-proton collisions: $d σ/dt$ and the role of helicity flip processes
Creators: name: Cisek, Anna
name: Schäfer, Wolfgang
name: Szczurek, Antoni
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the differential cross section $dσ/dt$ for the diffractive photoproduction process $γp \to ρp$ and compare to recent data extracted by the CMS collaboration from ultraperipheral proton-lead collisions. Our model is based on two-gluon exchange in the nonperturbative domain. We take into account both helicity conserving and often neglected helicity-flip amplitudes in the $γ\to V$ transition. The letter can contribute at finite $t$. The shape of the differential cross section as well as the role of helicity flip processes is strongly related to the dependence of the unintegrated gluon distribution on transverse momenta in the nonperturbative region.
description: 18 pages, 8 figures
Influence of Patient-Specific Covariates on Test Validity of Two Delirium Screening Instruments in Neurocritical Care Patients (DEMON-ICU)
Creators: name: Weiss, Björn
name: Paul, Nicolas
name: Spies, Claudia D.
name: Ullrich, Dennis
name: Ansorge, Ingrid
name: Salih, Farid
name: Wolf, Stefan
name: Luetz, Alawi
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit
subject: CAM-ICU
subject: critical care
subject: delirium
subject: hypnotics and sedatives
subject: ICDSC
subject: neurocritical care
subject: sensitivity
subject: specificity

description: Background: Delirium screening instruments (DSIs) should be used to detect delirium, but they only show moderate sensitivity in patients with neurocritical illness. We explored whether, for these patients, DSI validity is impacted by patient-specific covariates. Methods: Data were prospectively collected in a single-center quality improvement project. Patients were screened for delirium once daily using the Intensive Care Delirium Screening Checklist (ICDSC) and the Confusion Assessment Method for the Intensive Care Unit (CAM-ICU). Reference was the daily assessment using criteria from the Diagnostic and Statistical Manual, 4th Edition, Text Revision (DSM-IV-TR). In a two-step receiver operating characteristics regression analysis adjusting for repeated measurements, the impact of acute diagnosis of stroke or transient ischemic attack (TIA), neurosurgical intervention, Richmond Agitation Sedation Scale, and ventilation status on test validity was determined. Results: Of 181 patients screened, 101 went into final analysis. Delirium incidence according to DSM-IV-TR was 29.7%. For the first complete assessment series (CAM-ICU, ICDSC, and DSM-IV-TR), sensitivity for the CAM-ICU and the ICDSC was 73.3% and 66.7%, and specificity was 91.8% and 94.1%, respectively. Consideration of daily repeated measurements increased sensitivity for the CAM-ICU and ICDSC to 75.7% and 73.4%, and specificity to 97.3% and 98.9%, respectively. Receiver operating characteristics regression revealed that lower Richmond Agitation Sedation Scale levels significantly impaired validity of the ICDSC (p = 0.029) and the CAM-ICU in its severity scale version (p = 0.004). Neither acute diagnosis of stroke or TIA nor neurosurgical intervention or mechanical ventilation significantly influenced DSI validity. Conclusions: The CAM-ICU and ICDSC perform well in patients requiring neurocritical care, regardless of the presence of acute stroke, TIA, or neurosurgical interventions. Yet, even very light or moderate sedation can significantly impair DSI performance.
Measurement-Based Quantum Computation on Two-Body Interacting Qubits with Adiabatic Evolution
Creators: name: Kyaw, Thi Ha
name: Li, Ying
name: Kwek, Leong Chuan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A cluster state cannot be a unique ground state of a two-body interacting Hamiltonian. Here, we propose the creation of a cluster state of logical qubits encoded in spin-1/2 particles by adiabatically weakening two-body interactions. The proposal is valid for any spatial dimensional cluster states. Errors induced by thermal fluctuations and adiabatic evolution within finite time can be eliminated ensuring fault-tolerant quantum computing schemes.
description: title updated, introduction and discussions sections updated
Fast-response hot-wire flow sensors for wind and gust estimation on UAVs
Creators: name: Simon, Nathaniel
name: Piqué, Alexander
name: Snyder, David
name: Ikuma, Kyle
name: Majumdar, Anirudha
name: Hultmark, Marcus
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Due to limitations in available sensor technology, unmanned aerial vehicles (UAVs) lack an active sensing capability to measure turbulence, gusts, or other unsteady aerodynamic phenomena. Conventional in situ anemometry techniques fail to deliver in the harsh and dynamic multirotor environment due to form factor, resolution, or robustness requirements. To address this capability gap, a novel, fast-response sensor system to measure a wind vector in two dimensions is introduced and evaluated. This system, known as `MAST' (for MEMS Anemometry Sensing Tower), leverages advances in microelectromechanical (MEMS) hot-wire devices to produce a solid-state, lightweight, and robust flow sensor suitable for real-time wind estimation onboard a UAV. The MAST uses five pentagonally-arranged microscale hot-wires to determine the wind vector's direction and magnitude. The MAST's performance was evaluated in a wind tunnel at speeds up to 5~m/s and orientations of 0 - 360 degrees. A neural network sensor model was trained from the wind tunnel data to estimate the wind vector from sensor signals. The average error of the sensor is 0.14 m/s for speed and 1.6 degrees for direction. Furthermore, 95% of measurements are within 0.36 m/s error for speed and 5.0 degree error for direction. With a bandwidth of 570 Hz determined from square-wave testing, the MAST stands to greatly enhance UAV wind estimation capabilities and enable capturing relevant high-frequency phenomena in flow conditions.
description: 23 pages, 11+2 figures, under review
A new look at reweighted message passing
Creators: name: Kolmogorov, Vladimir
Publisher: name: arXiv
Year: 2013
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We propose a new family of message passing techniques for MAP estimation in graphical models which we call {\em Sequential Reweighted Message Passing} (SRMP). Special cases include well-known techniques such as {\em Min-Sum Diffusion} (MSD) and a faster {\em Sequential Tree-Reweighted Message Passing} (TRW-S). Importantly, our derivation is simpler than the original derivation of TRW-S, and does not involve a decomposition into trees. This allows easy generalizations. We present such a generalization for the case of higher-order graphical models, and test it on several real-world problems with promising results.
description: TPAMI accepted version
On the Significance of the Gottesman-Knill Theorem
Creators: name: Cuffaro, Michael E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: According to the Gottesman-Knill theorem, quantum algorithms which utilise only the operations belonging to a certain restricted set are efficiently simulable classically. Since some of the operations in this set generate entangled states, it is commonly concluded that entanglement is insufficient to enable quantum computers to outperform classical computers. I argue in this paper that this conclusion is misleading. First, the statement of the theorem (that the particular set of quantum operations in question can be simulated using a classical computer) is, on reflection, already evident when we consider Bell's and related inequalities in the context of a discussion of computational machines. This, in turn, helps us to understand that the appropriate conclusion to draw from the Gottesman-Knill theorem is not that entanglement is insufficient to enable a quantum performance advantage, but rather that if we limit ourselves to the operations referred to in the Gottesman-Knill theorem, we will not have used the resources provided by an entangled quantum system to their full potential.
description: Forthcoming in the British Journal for the Philosophy of Science (this is the submitted version). Note that this article supersedes arXiv:1207.5236
Real Lines on Random Cubic Surfaces
Creators: name: Ait El Manssour, Rida
name: Belotti, Mara
name: Meroni, Chiara
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik
subject: lines on cubics
subject: random geometry
subject: Kostlan distribution
subject: harmonic decomposition

description: We give an explicit formula for the expectation of the number of real lines on a random invariant cubic surface, i.e., a surface Z⊂RP3 defined by a random gaussian polynomial whose probability distribution is invariant under the action of the orthogonal group O(4) by change of variables. Such invariant distributions are completely described by one parameter λ∈[0,1] and as a function of this parameter the expected number of real lines equals: Eλ=9(8λ2+(1−λ)2)2λ2+(1−λ)2(2λ28λ2+(1−λ)2−13+238λ2+(1−λ)220λ2+(1−λ)2−−−−−−−−−−−−−√). This result generalizes previous results by Basu et al. (Math Ann 374(3–4):1773–1810, 2019) for the case of a Kostlan polynomial, which corresponds to λ=13 and for which E13=62–√−3. Moreover, we show that the expectation of the number of real lines is maximized by random purely harmonic cubic polynomials, which corresponds to the case λ=1 and for which E1=2425−−√−3.
A Review of the Use of Psychoacoustic Indicators on Soundscape Studies
Creators: name: Engel, Margret Sibylle
name: Fiebig, André
name: Pfaffenbach, Carmella
name: Fels, Janina
Publisher: name: Technische Universität Berlin
Year: 2021
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: psychoacoustic indicators
subject: soundscape
subject: PRISMA model
subject: principal component analysis

description: This work reviews the literature of 46 peer-reviewed papers and presents the current status on the use of psychoacoustic indicators in soundscape studies. The selection of papers for a systematic review followed the PRISMA method. Afterwards, descriptive analysis and principal component analysis (PCA) were realised. For the PCA, the following parameters extracted from the papers were analysed: psychoacoustic indicator, hypothesis, statistical units, data collection method and major findings for each investigated psychoacoustic indicator. The results show an overview of the use of psychoacoustic indicators, through main hypothesis and findings for each psychoacoustic indicator i.e. the importance of statistical units, such as percentiles, to investigate the hypothesis related to the description of auditory descriptors and perceptual attributes. Another important finding is that many papers lack the specification of computation methods limiting the comparability of study results and impeding the meta-analyses.
Reconstruction of constitutive parameters in isotropic linear elasticity from noisy full-field measurements
Creators: name: Bal, Guillaume
name: Bellis, Cédric
name: Imperiale, Sébastien
name: Monard, François
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Within the framework of linear elasticity we assume the availability of internal full-field measurements of the continuum deformations of a non-homogeneous isotropic solid. The aim is the quantitative reconstruction of the associated moduli. A simple gradient system for the sought constitutive parameters is derived algebraically from the momentum equation, whose coefficients are expressed in terms of the measured displacement fields and their spatial derivatives. Direct integration of this system is discussed to finally demonstrate the inexpediency of such an approach when dealing with noisy data. Upon using polluted measurements, an alternative variational formulation is deployed to invert for the physical parameters. Analysis of this latter inversion procedure provides existence and uniqueness results while the reconstruction stability with respect to the measurements is investigated. As the inversion procedure requires differentiating the measurements twice, a numerical differentiation scheme based on an ad hoc regularization then allows an optimally stable reconstruction of the sought moduli. Numerical results are included to illustrate and assess the performance of the overall approach.
description: 23 pages, 7 figures
Some remarks about Descartes' rule of signs
Creators: name: Albouy, Alain
name: Fu, Yanning
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26A06

description: What can we deduce about the roots of a real polynomial in one variable by simply considering the signs of its coefficients? On one hand, we give a complete answer concerning the positive roots, by proposing a statement of Descartes' rule of signs which strengthens the available ones while remaining as elementary and concise as the original. On the other hand, we provide new kinds of restrictions on the combined numbers of positive and negative roots.
description: 10 pages
Separability and complete reducibility of subgroups of the Weyl group of a simple algebraic group of type $E_7$
Creators: name: Uchiyama, Tomohiro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: Let $G$ be a connected reductive algebraic group defined over an algebraically closed field $k$. The aim of this paper is to present a method to find triples $(G,M,H)$ with the following three properties. Property 1: $G$ is simple and $k$ has characteristic 2. Property 2: $H$ and $M$ are closed reductive subgroups of $G$ such that $H
Modeling and Control of an HVAC System to Minimize COVID-19 Virus Transmission
Creators: Samadi, Nasim
Publisher: name: University of Alberta Library
Year: 2023

COVID-19 is one of the high-level infections that have caused considerable damage to the lives of millions of people worldwide. Many studies confirm that indoor environments are the hotspots for the transmission of COVID-19 infectious. Thus, improving indoor air quality in enclosed areas is an efficient and fundamental approach to ease or dilute the concentration of viral aerosols. Heating, ventilation, and air conditioning (HVAC) systems have an integral role in increasing or reducing the infection risk.

For example, one of the best ways to control and decrease the infection risk is high ventilation; On the other hand, high ventilation will increase energy consumption

and cost. This thesis proposes an intelligent controller of HVAC systems to assess the tradeoff between energy consumption and indoor infection risk. To achieve this

goal, a model predictive controller (MPC) is designed for a university building to control HVAC systems to minimize COVID-19 virus transmission and reduce building energy consumption. MPC uses dynamic models to predict the system’s future output while tuning to system constraints. First, a set of dynamic models according

to physics-based models, including conduction, convection, radiation heat transfer, and conservation of mass is created to utilize the MPC controller. Then, the developed models were experimentally validated by conducting experiments in the ETLC building at the University of Alberta. One building classroom was equipped with nine sensors measuring indoor and outdoor environmental parameters such as temperature, relative humidity, CO2, and airflow rate. The validation results showed that the model could predict room temperature and CO2 concentration by 0.8%, and 2.4% average errors, respectively. After validation, the MPC controller was implemented on the dynamic models to calculate the optimal airflow and supply air temperature at each moment. The results will show that the MPC controller can mitigate the infection risk of the COVID-19 virus while reducing daily energy consumption by about 54.8% compared to the baseline controller implemented in the current building. The

results of testing designed controllers on the ETLC classroom show the potential saving energy for the ETLC classroom by comparing the new control results with those

from the building measurements.
Biomimetic Actuators
Creators: Wan, Yu
Publisher: name: University of Alberta Library
Year: 2023

Biomimetic actuators are receiving growing attention due to the novel ideas inspired by mother nature. By mimicking the behaviors or traits of living creatures, scientists are able to realize various functions and properties that are difficult to achieve. An enormous number of applications in robotics, biomedicals, wearable devices, and autonomous smart systems are emerging and advancing thanks to the perpetual development of biomimetic actuators. With new breakthroughs and advancements in 3D printing, biomedical engineering and architecture, artificial intelligence, machine learning, and brain machine interface, biomimetic actuators are now in a prosperous era. Chapter 1 gives a thorough introduction to biomimicry from the perspective of properties and functions as well as some discussion on biomimetic actuators in terms of the materials and working mechanisms. In Chapter 2, we developed a wireless swimming device with sensing capability. The swimming behavior was inspired by an octopus; it can swim slowly under normal conditions, but snaps quickly away to escape predators. Chapter 3 focuses on developing a touch-responsive actuator, mimicking the behavior of the shy plant, Mimosa Pudica. The actuator was able to close its “leaves” upon a fingertip touch. Chapter 4 focused on a porous magnetic hydrogel actuator capable of morphing in size as well as capturing and transporting cargo under the actuation of heat produced by magneto-thermo effect. In Chapter 5, a conclusion and future outlook are discussed. Finally, Appendix A, B, C, and D are included as supplementary information and some preliminary experiments during my Ph.D. program.
Flips in combinatorial pointed pseudo-triangulations with face degree at most four
Creators: name: Aichholzer, Oswin
name: Hackl, Thomas
name: Orden, David
name: Pilz, Alexander
name: Saumell, Maria
name: Vogtenhuber, Birgit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: Computational Geometry (cs.CG)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In this paper we consider the flip operation for combinatorial pointed pseudo-triangulations where faces have size 3 or 4, so-called combinatorial 4-PPTs. We show that every combinatorial 4-PPT is stretchable to a geometric pseudo-triangulation, which in general is not the case if faces may have size larger than 4. Moreover, we prove that the flip graph of combinatorial 4-PPTs is connected and has diameter $O(n^2)$, even in the case of labeled vertices with fixed outer face. For this case we provide an $Ω(n\log n)$ lower bound.
description: 21 pages, 24 figures. Accepted for publication in the special volume of International Journal of Computational Geometry & Applications devoted to the XV Spanish Meeting on Computational Geometry
Dissipative effects in finite density holographic superfluids
Creators: name: Donos, Aristomenis
name: Kailidis, Polydoros
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the leading dissipative corrections of holographic superfluids at finite temperature and chemical potential by employing our recently developed techniques to study dissipative effects in the hydrodynamic limit of holographic theories. As part of our results, we express the incoherent conductivity, the shear and the three bulk viscosities in terms of thermodynamics and the black hole horizon data of the dual bulk geometries. We use our results to show that all three bulk viscosities exhibit singular behaviour close to the critical point.
description: 34 pages, fixed typos, added references
Intracortical administration of pleiotrophin in ischemic stroke: investigating functional outcomes and glial expression
Creators: Tanase, Celestina S.
Publisher: name: University of Alberta Library
Year: 2023

Ischemic stroke is the leading cause of disability and third leading cause of death in Canada, exerting a serious burden on stroke survivors, their families, and healthcare resources. Characterized by brain damage due to loss of blood flow and oxygen supply, ischemic stroke is characterized by damage to brain tissue and chronic disability that most commonly affects sensation and movement of the upper limb. With rehabilitation, recovery from stroke is improved but is rarely complete. Current efforts focus on enhancing the extent of recovery following stroke to minimize the burden of disability on stroke survivors. This improvement in recovery could be achieved by improving the survival and regenerative capabilities of brain tissue following stroke. Pleiotrophin (PTN) is a protein that is abundantly expressed in utero and is associated with brain development by its diverse actions on different cell types existing in the brain. PTN has been documented to modulate the immune response, neuronal development, and myelination. In the present study, we sought to administer PTN to the cortical regions surrounding a stroke to investigate its effects on recovery from stroke-related functional deficits and brain responses to ischemic injury. Animals were administered an ischemic stroke affecting the forelimb and hindlimb sensorimotor cortex, followed by a delayed cortical injection of PTN. Functional deficits were assessed using two behavioural assays, the Tapered Beam task and String Pull task, which focused on measures of forelimb and hindlimb motor function. Brain tissue at varying timepoints post-stroke was investigated for PTN protein availability, markers of microglia (immune cells of the brain), astrocytes (multifunctional glial cells that form a protective scar following brain injury), and oligodendrocytes (brain cells necessary for myelination). Following stroke, only mild impairments in two sensorimotor tasks were detected. Performance in these behavioural assays was related to stroke size but unaffected by PTN treatment. Similarly, expression of the cell-

ii

specific markers was related to timepoint following stroke, but not PTN treatment. The data presented in this study cannot clearly conclude the effects of PTN treatment on functional recovery and glial responses post-stroke. Tasks more sensitive to this stroke model and investigation of cell signaling related to PTN injection in tissue are needed in future studies investigating PTN as a therapeutic target in stroke recovery.
Geometric Data Imputation of Tabular Vein Deposits
Creators: Bai, Jing
Publisher: name: University of Alberta Library
Year: 2023

Multiple imputation is a method to quantify geometric data uncertainty to improve the performance of modeling the geological domain of tabular vein deposits. During the process of multiple imputation, the primary position distribution from spatial information and the secondary thickness distribution from spatial information are formed. The thickness distribution is transformed into the position. Then, these two distributions are merged together to characterize the local conditional distribution of the position. The method can be applied to many scenarios.
Characteristics of conservations laws of chiral-type systems
Creators: name: Balandin, A. V
Publisher: name: arXiv
Year: 2013
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this note a new way to construct the characteristics of conservations laws of integrable chiral-type systems is proposed.
description: 19 pages
A Child's Transition to School: A Phenomenological Study
Creators: Makovichuk, Lee
Publisher: name: University of Alberta Library
Year: 2023

As a kindergarten teacher, I have witnessed many ways that children and parents experience the transition to school—seamlessly for those who seem to fit into classroom rhythms with ease and joy; anxiously and, at times, with resistance for those who have difficulty finding their place. As a parent, I helped my own children navigate changes to their daily routines when school began. I also adjusted the rhythms of our family life to integrate with the school schedule, coordinating our daily plans with school arrivals and departures and planning family holidays during school breaks. When the transition to school goes smoothly for first-time students, it is easy to overlook the changes they are experiencing, and when a transition is rife with difficulty, they are often approached as problems to be solved. For more than four decades, “problem” transitions have concerned parents, teachers, school administrators, policymakers, and educational researchers. The extent research conceptualizes the transition to school as “readiness,” prioritizing the cognitive, social, and interpersonal skills a child needs for school as well as the practices and strategies that teachers, parents, and communities can use to make schools ready for children. With so much effort spent looking for solutions, researchers miss the opportunity to delve deeply into the humanness in this life-changing event. The review of the relevant literature that I conducted as part of this study uncovers the opportunity for phenomenological query and reflective exploration regarding a child’s transition to school.Inspired by Max van Manen’s (2014) phenomenology of practice methodology, this doctoral study considers the experience of the transition to school for parents and teachers. A phenomenological approach is well-suited for exploring this extensively studied childhood transition because it seeks to understand the meaning structures of pre-reflected, lived experiences before theories conceptualize such events. Interviews with three teachers and nine families reveal embodied, relational, and spatial-temporal events of preparing, arriving, separating, and welcoming during the transition to school. Lived experiences become the basis for phenomenological and philosophical reflections.In three articles— A Child’s Transition to School: Review of the Relevant Literature, Phenomenology of the Parent-Child Goodbye and The Phenomenology of the Kindergarten Classroom—I use this rigorous and sophisticated research method to explore some of the possible meaning structures of a child’s transition to school. This dissertation reveals the co-constitutive nature of relationally intersubjective and generative human activities intentionally directed toward the child being in a classroom and becoming a student.
title: Radiation Qualification of the Cologne Chip GateMate A1 FPGA
title: Strahlenqualifizierung des Cologne Chip GateMate A1 FPGA
Creators: name: Jung, Richard
Publisher: name: Fachhochschule Dortmund
Year: 2023
Subjects: subject: 620 Ingenieurwissenschaften und Maschinenbau

description: In this thesis, the radiation sensitivity of the novel Cologne Chip GateMate A1 field-programmable gate array (FPGA) is evaluated. An initial introduction of radiation mechanisms and their effects on electronics is given, followed by a brief overview of radiation test standards. The common elements present in FPGAs are discussed, which is followed by details of the GateMate FPGA device and a description of the software design flow. Afterwards, the development of a purpose-built printed circuit board (PCB) for radiation tests with the GateMate FPGA is detailed. Four components of the GateMate have been tested during three radiation campaigns, as well as a benchmark circuit to compare the radiation performance of the GateMate with other FPGAs tested at the European Organization for Nuclear Research (CERN). The test architecture consists of the device under test (DUT) FPGA and a TESTER FPGA whose task is to provide inputs to the DUT and record its response. The DUT and TESTER designs developed for all tests are discussed in detail. Finally, the results obtained during the irradiation campaigns are presented, showing that the GateMate FPGA performs similarly to other FPGAs using the same process technology. Only the benchmark test was not finalized, as implementation problems prevented its completion in the given time frame. The thesis concludes with a comprehensive summary and outlook.
description: In dieser Arbeit wird die Strahlungsempfindlichkeit des neuartigen Cologne Chip GateMate A1 FPGA untersucht. Zunächst wurde eine Einführung in Strahlungseffekte und ihre Auswirkungen auf elektronische Komponenten gegeben, gefolgt von einem kurzen Überblick auf aktuelle Strahlungsteststandards. Die üblichen Elemente in FPGAs werden diskutiert, gefolgt von Details über GateMate spezifische Elementen sowie eines Überblicks über den Software-Design-Flow für GateMate FPGA Anwendungen. Im Anschluss wird die Entwicklung eines PCBs für Bestrahlungstests des GateMates detailliert. Vier Komponenten des GateMate wurden während drei Strahlungskampagnen getestet, sowie eine Benchmark-Schaltung, um die Strahlungsempfindlichkeit des GateMate mit anderen am CERN getesteten FPGAs zu vergleichen. Die Testarchitektur besteht aus dem DUT FPGA und einem TESTER FPGA, dessen Aufgabe es ist, Eingaben an das DUT zu liefern und dessen Reaktion aufzuzeichnen. Die für alle Tests entwickelten DUT- und TESTER-Designs werden im Detail diskutiert. Schließlich werden die während der Bestrahlungskampagnen erzielten Ergebnisse vorgestellt, die zeigen, dass der GateMate FPGA ähnliche wie andere FPGAs mit vergleichbarer Prozesstechnologie liefert. Lediglich der Benchmark-Test wurde nicht finalisiert, da Probleme bei der Implementierung die Fertigstellung im vorgegebenen Zeitrahmen verhinderten. Die Arbeit schließt mit einer umfassenden Zusammenfassung und einem Ausblick ab.
Attachment Theory in Organizations:  Relationships with Coworker, Leader, and Organization Itself
Creators: Jing, Lei
Publisher: name: University of Alberta Library
Year: 2023

I present a dissertation project consisting of three independent research papers focusing on how attachment theory (Ainsworth et al., 1978; Bowlby, 1969) can inform the employee–organization relationship (EOR) research, including workplace relationships with coworkers, leaders, and the organization itself, and particularly what happens when difficulties in these relationships arise, such as mistreatment-like experiences. In Study 1, relying on survey data, I examine how different forms of organizational commitment may change after individuals experience social undermining (SU) enacted by other organization members, depending on the individual’s organizational attachment style. In Study 2, two experiments were conducted to investigate how situationally induced attachment states moderate employees’ task performance after exposure to leader mistreatment. In Study 3, using survey data and a person-oriented analytical approach, I focus on the within-individual attachment patterns and the implications of such patterns for important EOR outcomes, including perceived organizational trust and support. Drawing on attachment theory, these studies together demonstrate that the basic human orientations in interpersonal relationships entailed by attachment theory are relevant to the work domain, particularly to our understanding of the EOR.
A Framework of Occupational Safety Hazard Analysis and Control to Support Enterprise Health and Safety Information Digitalization
Creators: Qiu, Changcui
Publisher: name: University of Alberta Library
Year: 2023

Occupational safety hazards and risk management in construction industry are major worldwide concerns due to its unique dynamic nature of the working environment. Safety related documentations such as industry injury reports, physical demands analysis (PDA) and standard operating procedures (SOP) contain valuable information to support the risk control and prevention algorithm. Systematic analysis of the risk factors on cause-and effect relationship and safety attributes of the incident injury reports can make significant contributions to the construction industry and is an ideal approach for the occupational performance and risk evaluation. This thesis presents a blended study on occupational safety hazard control and risk assessment to support the enterprise health and safety digital information digitalization. The study first explores a strategy of attribute-based identification and degree of risk classification by applying distinctive quantitative analysis on level of injuries. Such analysis is conducted with the support of both physical demands analysis (PDA), standard operating procedures (SOP) and a large number of incident reports. To further expose the causality links and relation analysis of potentially hazardous activities and construction hazards, data mining analysis is then carried out following the attribute-based risk assessment model by using the RapidMiner. Then, a conceptual digitalization framework is also proposed to assess digital information mapping and future predictive measurements for effective risk management and up-to-date risk factor evaluation. The study discussed how the digitalization framework is essential to the construction industry by exposing the common risks that the industry is currently facing. Finally, a health and safety (H&S) information flowchart, as well as an information management and control framework for the H&S department is also proposed. The blended analysis is expected to help the construction industry identify relationships on causes of safety hazards, key safety attributes and ergonomic characteristics, as well as the level of injury and their corresponding risk controls and preventions. The frameworks support H&S information digitalization and are expected to facilitate H&S information management to improve workplace productivity and efficiency.
Scrutinizing the relationship between plage areas and sunspot areas and numbers
Creators: name: Chatzistergos, Theodosios
name: Ermolli, Ilaria
name: Krivova, Natalie A.
name: Barata, Teresa
name: Carvalho, Sara
name: Malherbe, Jean-Marie
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Studies and reconstructions of past solar activity require data on sunspots as well as faculae/plage and network. Such data are also important for understanding the magnetic activity and variability of the Sun and Sun-like stars. The longest available direct faculae/plage datasets are white-light facular and Ca II K observations going back to 1874 and 1892, respectively. Prior to that time, the only direct data available are for sunspots. We reassess the relationship between plage areas and sunspot records (areas and numbers) since 1892, to allow reconstructions of facular/plage areas which can be employed for studies going further back in time, i.e. over the period when solely sunspot observations are available. We use the plage areas derived from 38 consistently processed Ca II K archives as well as the plage area composite based on these archives. We find the relationship between plage and sunspot areas and numbers to be well represented by a power law function. We further find that the relationships depend on the bandwidth and the solar cycle strength. The reconstructions with a power law relationship are in good agreement with the original plage area series, whereas employment of a cycle-strength-dependent relationship improves the reconstructions only marginally. Performing the same analysis on other previously published plage area series, usually derived from a single archive with diverse processing techniques, returns different results when using different time series. This highlights the importance of applying a consistent processing to the various archives and demonstrates the uncertainties introduced by using previously published series. Our results have implications for past solar activity and irradiance reconstructions as well as for stellar activity studies, which sometimes assume a linear dependence between plage and sunspot areas.
description: 22 pages, 13 figures, accepted for publication in Astronomy & Astrophysics
Spectroscopy of triply-charmed baryons from lattice QCD
Creators: name: Padmanath, M.
name: Edwards, Robert G.
name: Mathur, Nilmani
name: Peardon, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The spectrum of excitations of triply-charmed baryons is computed using lattice QCD including dynamical light quark fields. Calculations are performed on anisotropic lattices with temporal and spatial spacings a_t = 0.0351(2) and a_s ~ 0.12 fm respectively and with pion mass of about 390 MeV. The spectrum obtained has baryonic states with well-defined total spin up to 7/2 and the low-lying states closely resemble the expectation from models with an SU(6)X O(3) symmetry. Energy splittings between extracted states, including those due to spin-orbit coupling in the heavy quark limit are computed and compared against data at other quark masses.
description: Version published in PRD
Conserved current correlators of conformal field theories in 2+1 dimensions
Creators: name: Huh, Yejin
name: Strack, Philipp
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute current correlators of the CP^{N-1} field theory in 2+1 dimensions, both at the critical point and in the phase with spontaneously broken SU(N) symmetry. Universal constants are obtained to next-to-leading order in the 1/N expansion. Implications are noted for quantum critical points of antiferromagnets, and their vicinity.
description: 29 pages, 10 figures, 4 tables. V2 : O(M) vector model action specified and updated for consistency with existing literature
On the Origin of the Strong Optical Variability of Emission-line Galaxies
Creators: name: Lin, Ruqiu
name: Zheng, Zhen-Ya
name: Hu, Weida
name: Jiang, Chunyan
name: Pang, Xiang
name: Yang, Chenwei
name: Yuan, Fang-Ting
name: T., Rahna P.
name: Wang, Jian-Guo
name: Wang, Yibo
name: Jiang, Ning
name: Zhu, Shuairu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Emission-line galaxies (ELGs) are crucial in understanding the formation and evolution of galaxies, while little is known about their variability. Here we report the study on the optical variability of a sample of ELGs selected in the COSMOS field, which has narrow-band observations in two epochs separated by $\gtrsim$ 12 years. This sample was observed with Suprime-Cam (SC) and Hyper Suprime-Cam (HSC) on the $Subaru$ telescope in NB816 and $i'/i$ bands, respectively. After carefully removing the wing effect of a narrow-band filter, we check the optical variability in a sample of 181 spectroscopically confirmed ELGs. We find that 0 (0/68) Ha emitters, 11.9% (5/42) [OIII] emitters, and 0 (0/71) [OII] emitters show significant variability ($|Δm_{NB}| \geq 3\,σ_{Δm_{NB,AGN}} = 0.20\, mag$) in the two-epoch narrow-band observations. We investigate the presence of active galactic nucleus (AGN) in this variable ELG (var-ELG) sample with three methods, including X-ray luminosity, mid-infrared activity, and radio-excess. We find zero bright AGN in this var-ELG sample, but cannot rule out the contribution from faint AGN. We find that SNe could also dominate the variability of the var-ELG sample. The merger morphology shown in the HST/F814W images of all the var-ELG sample is in agreement with the enhancement of star formation, i.e., the SNe activity.
description: 20 pages, 10 figures, accepted for publication in The Astrophysical Journal