cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Transforming conditions of lovelessness : a critical inquiry into radical forms of love and pedagogy
Creators: name: Norman, Celine P.
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Radical love
Critical pedagogy
Coloniality
Neoliberalism

description: Abstract: Within the body of educational research, limited research exists on the role of critical and political forms of love in reshaping pedagogical practices and motivating liberatory social movements and struggles. Critical education scholars have adopted the terms radical or revolutionary love in order to distinguish a politically-oriented conception of love from dominant notions of love as romantic, universal and unconditional. Combining theoretical frameworks of coloniality and critiques of neoliberalism, this study explores the role of radical love as a guiding force for liberatory pedagogical projects, and collective social movements and struggles. While some research has recognized the significance of radical love within a context of coloniality, the role of colonial, capitalist and neoliberal logics in complicating or obscuring engagement with radical love within critical pedagogy has not been largely explored. Through a textual analysis of three key texts, this study explores the following research questions: 1. What is radical love, and what is its relationship to critical pedagogy? 2. How do colonial and capitalist logics complicate or obscure educators/students/community members from authentically engaging in radical love? 3. How can radical love deepen our understanding of contemporary social movements and struggles against violence, and critical educational contexts. More specifically, what does radical love look like in the present context of social and political unrest, including the Black Lives Matter movement? This work broadens the discussion around the role of love in motivating collective, political, and liberatory commitments within critical pedagogical contexts.
Characterizing the nature of Fossil Groups with XMM
Creators: name: La Barbera, F.
name: Paolillo, M.
name: De Filippis, E.
name: de Carvalho, R. R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present an X-ray follow-up, based on XMM plus Chandra, of six Fossil Group (FG) candidates identified in our previous work using SDSS and RASS data. Four candidates (out of six) exhibit extended X-ray emission, confirming them as true FGs. For the other two groups, the RASS emission has its origin as either an optically dull/X-ray bright AGN, or the blending of distinct X-ray sources. Using SDSS-DR7 data, we confirm, for all groups, the presence of an r-band magnitude gap between the seed elliptical and the second-rank galaxy. However, the gap value depends, up to 0.5mag, on how one estimates the seed galaxy total flux, which is greatly underestimated when using SDSS (relative to Sersic) magnitudes. This implies that many FGs may be actually missed when using SDSS data, a fact that should be carefully taken into account when comparing the observed number densities of FGs to the expectations from cosmological simulations. The similarity in the properties of seed--FG and non-fossil ellipticals, found in our previous study, extends to the sample of X-ray confirmed FGs, indicating that bright ellipticals in FGs do not represent a distinct population of galaxies. For one system, we also find that the velocity distribution of faint galaxies is bimodal, possibly showing that the system formed through the merging of two groups. This undermines the idea that all selected FGs form a population of true fossils.
description: 9 pages, 3 figures. Submitted 01/12/2011 to MNRAS, referee report received 21/02/2012, accepted 22/02/2012
Pathway through math : educator perspectives on middle school math acceleration
Creators: name: Heaton, Amy Joann
Publisher: name: The University of Texas at Austin
Year: 2021
Subjects: Middle school mathematics
Tracking
Geometry
Equity

description: This thesis reports a study of middle-school mathematics teachers’ attitudes about teaching Geometry in middle school, along with the difference between the factors they think should be used in placing students in the advanced (Geometry) track and what factors are actually considered. Mathematics is a subject which sees significant racialized tracking due to the sequential nature of its course progression coupled with inequitable data measurements and placement methods. While the Common Core State Standards (CCSS) present a standard course progression that does not include Algebra 1 at the middle school level, many school districts continue to include it, and in some cases, Geometry, as options for higher-performing students. In this study, three middle school teachers from two school districts that offered different middle school mathematics course progressions were surveyed, and the responses were then analyzed and coded. Though these teachers had idealized notions of placement tests being the best measure for a student’s mathematical readiness, additional considerations such as equity concerns and parental disagreement contributed to the actual placement of students into advanced course pathways. This thesis discusses implications for equity in middle school math.
Exploring Multiple Literacies and Identities of Children in a Mandarin-English Bilingual Program
Creators: name: Zhang, Yan
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Education
subject: Education--Bilingual and Multicultural
subject: Education--Elementary
subject: literacies
subject: identities
subject: multilingual
subject: bilingual program

description: In Canadian schools, languages other than English and French are offered, such as Chinese, Spanish, German, and others. In order to help students in these programs develop to their fullest potentials, more research is necessary to explore the realities regarding students’ construction of identifications through multiple languages and literacies. Most previous studies on multilingual children’s literacies and identities have viewed literacy as a product and identity as an essential part of self associated with dimensions of culture, ethnicity, nationality, gender, religion, race, and generation. Little attention has been paid to the dynamic processes within children’s multiple literacy practices and the proliferation of cultural flows, modes of belonging, and new practices of citizenship that mobilize minds and bodies with identifications beyond nation-states. This study explores the multiplicity of how children in a Mandarin-English bilingual program become literate and how they form their sense of identities in a dynamic process. The study draws from a rhizomatic framework of transculturation, transnationalism, translanguaging and poststructural perspectives of literacies and identities as processes of becoming. Data for the study were collected by multiple methods: 1) classroom observations of eight students across their academic years of grade five and six, 2) semi-structured interviews with their parents, teachers, and the program coordinator, 3) students’ documents and artifact collection, and 4) additional conversations and email communications with the students. Results indicate that the multilingual children in the study exceeded language boundaries and revealed highly creative uses of languages. They were engaged in complex, multi-layered, fluid, and context-dependent multilingual communication in different social networks, challenged the dominant discourse of any fixed and hyphenated identity, and took on transcultural and transnational identities that allowed for comfortable circulation among different worlds. Meanwhile, their life experiences, virtual and actual, assembled in and across different contexts and contributed to their reading, reading the world, and self. Implications of this research suggest the need to expand poststructural perspectives of literacies and identities to include multilingual and multicultural issues. Educators need to recognize they are teaching far more than the letters of the alphabet and unfold children’s multiple and mobile identities to explore new possibilities for life. This research also provides insights to inform policy-makers concerning heritage language and bilingual teaching in Canada.
“Il filo dell’acqua”. Acque di cielo, di fiume, di lago nei "Promessi sposi".
Creators: name: Danelon, Fabio
Publisher: name: Status Quaestionis
Year: 2018

description: The essay analyzes the significant presence of water in its various aspects and forms (rain, hail, river, lake) in Alessandro Manzoni’s novel, I promessi sposi, highlighting the role and function of the element from a narrative, stylistic and expressive perspective.
description: Status Quaestionis, No 14 (2018): L’acqua in letteratura e nelle arti: storie, simboli, immagini
Modeling Complex Systems as Dynamical Networks
Creators: name: Martin, Elliot Asher
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Statistics
subject: FOS: Mathematics
subject: Complex systems
subject: Complex networks

description: This thesis is devoted to the study of complex systems as dynamical networks. Complex systems typically have many interacting components with non-trivial dynamics, and often have a natural network representation. Examples of such networks are abundant, from the world wide web and power plants, to gene regulation and the human brain. However, often we can not observe these networks themselves, but can only passively observe the dynamics of their nodes. For example, neural activity is often available but not the connections between neurons. This motivated researchers to attempt to infer networks from observations of systems’ dynamics. These efforts resulted in the application of network methods to systems whose underlying structure is not intuitively described by a network, e.g., Earth’s climate. Therefore, it is important that the appropriateness and robustness of these analyses are critically analyzed — the focus of the bulk of this thesis. Recent work has outlined a way to assess how much information about a system can be captured by pairwise relationships — from which these networks are generally constructed. As most commonly formulated however, the method is based on cross-correlations, and therefore only sensitive to linear relationships. We extend this by using mutual informations, which are sensitive to a wide range of nonlinear relationships undetectable by the cross-correlation. We illustrate the advantages of our method using phase oscillators and fMRI data. Our method also allows a novel method for network inference, letting us estimate the conditional mutual informations between all pairs of variables when given their mutual informations. When applied to phase oscillator networks, this has resulted in superior results than using the mutual information alone. I also address the robustness of dynamical networks. We show that contrary to previous results, networks formed during El Niño periods have more connectivity than during “normal” periods, where the discrepancy is a result of the original analysis mixing different climate regimes. Finally, we address the question of inferring time delays for constructing dynamical networks. We show that a common technique is biased towards large time lags, and suggest an alternative estimator that does not suffer from this bias.
title: Opening up containment: making space in Newfoundland salmonid aquaculture
Creators: name: Schoot, Ignace
Publisher: name: Memorial University of Newfoundland
Year: 2019

description: Studies in geography and STS looking at containment-in-practice have shown that
 thinking about containment as a hermetic closing off of a definite space is not suitable for
 this world, which is characterized by leakages, overflows, excesses, movements, and
 borders being crossed, contested and drawn again. However, renderings of containment
 still play an important role in the practices that make and break our worlds. This thesis
 attempts to open up containment by thinking through how containment is done in two
 different cases in sea-based salmonid aquaculture on the south coast of the Canadian
 island of Newfoundland. Based on insights from poststructuralist geography, materialsemiotic
 STS, and animal geography, containment is approached as an ongoing spatial
 practice that needs to be constantly done and done again. This thesis respectively explores
 the provincial Code of Containment and the making of the rearing environment for
 farmed fish in and around the net-pen, and articulates containment as a (bio)political way
 of creating, holding together, and unmaking realities, including industrial salmonid
 aquaculture and the way animal lives and deaths are valuated.
What is a word : understanding developmental changes in the sounds infants accept as possible labels
Creators: name: May, Lillian Anne
Publisher: name: University of British Columbia
Year: 2010

description: Language is a conventional system: the use of words is shared within a language community. Even further, each language community has conventions regarding what “forms” may serve as words. A form (the phonological sounds or hand movements that make up a word) used in one community may not be proper in another. It is therefore important that when young language learners acquire a language, they adhere to both the general conventionality of language and the word-form conventions of their particular language(s). Previous research has demonstrated a developmental narrowing in the word-forms that infants are willing to accept as conventional labels. Younger word-learning infants view a wider range of symbols as potential labels than do older infants. The present study takes this research further, and specifies the nature of this developmental narrowing. Two potential word-learning constraints are explored: a Linguistic word-learning constraint, in which infants limit the symbols they view as potential labels according to whether the label-form consists of components that occur in at least one of the world’s languages, versus a more restrictive Native Language Assimilation constraint, in which infants limit symbols according to whether the components within the label-forms assimilate into native language speech categories. In addition, this research probed whether the development of such constraints is related to infants’ vocabulary acquisition. In the present study, I explored infants’ ability to learn unassimilable yet linguistic click words as object labels. In Experiment 1, I first established the effectiveness of the novel two-object Referential Switch paradigm, demonstrating that 14-month-old infants succeed in learning unassimilable click words as object labels in this task. In Experiment 2, I then tested 20-month-old infants to investigate the development of a Linguistic versus Native Language Assimilation. I found that while 20-month-old infants with smaller vocabularies were able to learn the unassimilable click words as labels, infants with larger vocabularies were not. These results suggest that the narrowing that occurs between 14 and 20 months of age in infants’ awareness of word-form conventions is best explained by the development of a Native Language Assimilation word-learning constraint.
Face-to-face and Online Learning Communities and Their Effect on Deep and Surface Approaches to Learning
Creators: name: Dyjur, Patricia Marie
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Higher
subject: Faculty development
subject: Blended learning
subject: Learning communities
subject: Deep and surface approaches to learning

description: The purpose of the study was to investigate the role of the face-to-face and online learning community in supporting participants’ approaches to learning in a blended faculty development program in higher education. Theoretical frameworks used to frame the study were the Community of Inquiry model (Garrison, Anderson & Archer, 2000) and deep and surface approaches to learning (Marton & Saljo, 1976a; Entwistle & Waterston, 1988). The research was conducted as a case study using mixed methods procedures. Data were collected through pre- and post-workshop surveys, interviews, observations, and online discussions. The findings from the study suggested that participants demonstrated a deep approach to learning by gaining a considerable amount of learning, by being highly interested or engaged in the learning process, by applying the learning to their own context, through their desire to excel or improve, by making connections, by being reflective, and by having a sense of satisfaction or confidence. Participants showed a surface approach to learning through low participation in some activities, by barely meeting requirements in some learning tasks, and by forgetting some concepts quickly. The face-to-face learning community appeared to facilitate a deep approach to learning by clarifying or reinforcing concepts, generating ideas, promoting feelings of connection between participants, and inspiring people to do their best work. The online learning community appeared to encourage a deep approach to learning in slightly different ways, such as helping to generate ideas, promoting critical thinking, promoting reflection, encouraging equitable participation, and by impacting the face-to-face learning. Social, cognitive, and teaching presences were documented to occur in the face-to-face learning environment, and each of these presences played a role in encouraging a deep approach to learning by workshop participants. One factor potentially related to a surface approach to learning: the theme, discouraged involvement, was associated with social and cognitive presences. All three presences, social, cognitive, and teaching, also occurred in the online learning environment, where they tended to promote a deep approach to learning. Implications of the study are that both the online and face-to-face learning communities played an important role in fostering a deep approach to learning for workshop participants, and that the online and face-to-face learning communities offered unique learning benefits to learners.
“Acqua per cancellare / Acqua feroce sogno / Acqua impos-sibile per rifarsi mondo”: Primo Levi e tre casi di intertestualità
Creators: name: Cravero, Mattia
Publisher: name: Status Quaestionis
Year: 2018

description: The article aims at pointing out and analyzing the convergences between Primo Levi’s work and classical literature according to the semantic and metaphoric motif of water. The intertextual dialogue is based on three different quotations: the first is an allusion to Tantalus myth to describe the horrible experience he lived in Auschwitz; the second is the reminiscence of Pindar’s first Olympian Ode, whose priamel inspired the title of Best is water; the third is a proper dialogue, in the form of a fictional letter written to Horace, in which Levi reviews the differences between contemporary Rome and the poet’s to conclude that man is dangerously damaging Earth through the exploitation and abuse of science and technique. In so doing, the importance of water both for life and our planet emerges as a considerable element and source of inspiration for Levi’s work.
description: Status Quaestionis, No 14 (2018): L’acqua in letteratura e nelle arti: storie, simboli, immagini
Narrare (è) un lungo fiume tranquillo: Gianni Celati lungo il Po
Creators: name: Manetti, Beatrice
Publisher: name: Status Quaestionis
Year: 2018

description: The article focuses on the narrative production of Gianni Celati explicitly linked to the Po, namely Narratori delle pianure (1985) and Verso la foce (1989). In both books the river and its waters fulfill many functions and take on different meanings, which fade into each other and reinforce each other. The Po is above all an element of the surrounding environment, a living organism that orients the relationship between the observer-traveler and the places he crosses. It is also the generating principle of the stories and the symbolic image of a precise idea of the art of narration, which leads on the one hand to the rediscovery of the Italian novelistic tradition, on the other hand to the practice of ‘writing of observation’ entrusted to the diaristic form. Finally, the Po’s mouth represents the physical and existential goal of the journey, to which it confers its deepest meaning.
description: Status Quaestionis, No 14 (2018): L’acqua in letteratura e nelle arti: storie, simboli, immagini
The driven Harper model
Creators: name: Kolovsky, Andrey R.
name: Mantica, Giorgio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We analyze the driven Harper model, which appears in the problem of tight-binding electrons in the Hall configuration (normal to the lattice plane magnetic field plus in-plane electric field). The presence of an electric field extends the celebrated Harper model, which is parametrized by the Peierls phase, into the driven Harper model, which is additionally parametrized by two Bloch frequencies associated with the two components of the electric field. We show that the eigenstates of the driven Harper model are either extended or localized, depending on the commensurability of Bloch frequencies. This results holds for both rational and irrational values of the Peierls phase. In the case of incommensurate Bloch frequencies we provide an estimate for the wave-function localization length.
description: 4 pages, 4 figures
Metafore acquatiche nella tradizione liederistica: modelli e ricorrenze
Creators: name: Fava, Elisabetta
Publisher: name: Status Quaestionis
Year: 2018

description: Music has always tried to imitate water: river or sea, shower, rain, tempest, source or fountain. The German Lied has the same aim and ‘rethinks’ the sound of water at the piano. The aim of the present essay is to focus upon the richness of the history of the Lied in images of water: a number of occurrences demonstrate the growth of a tradition based upon an effective and multiform symbolism of water: Schubert, Loewe, Brahms and other composers used such symbolism with great imagination and nuance, and through it they also developed a more modern composition modality for piano.
description: Status Quaestionis, No 14 (2018): L’acqua in letteratura e nelle arti: storie, simboli, immagini
Role playing games
Creators: name: Gutierrez, Rafael Fernando
Publisher: name: The University of Texas at Austin
Year: 2020
Subjects: GIF
Animated

description: My work often experiments with context and its effect/affect on subjective experience. In this way, I am considering the way blackness influences technology and the production of images on the Internet and in real life. These inquiries have informed my interest in “animated GIFs”, glitch art, mimetic discourse, mixed reality performance, and augmented reality. I excavate software, digital applications and the Internet to reveal blackness as a copied and imitated form of contemporary culture. My artistic interest is anchored to signifiers of blackness that can be co-opted and divorced from ethnic significance and the performance of black identity. I like to think of my work as a way to consider the dual hyper-visibility and invisibility of the Black body through the transformative qualities of artificiality. I use appropriation to make new meaning through repositioning of forms and ideas thereby questioning the significance of originality. I think about how to move beyond the idea of originality and creating something original as formal strategies to create new meaning in new forms or context. I ask people to think about how images work on us and how images are used to indoctrinate and form biases. I use images as a language to accelerate this conversation. I am remixing history and giving agency to the images and content of the work. Currently I am using technology to perform without the constraints of the real world. I want to continue creating art outside of the art object. I experiment with appropriation of material memory through the use color book pages, memes, and photographs. I use these source materials as a performative scaffolding of contexts that shift between the highbrow and low brow, historical and contemporary as mediated through Internet cultures. I am specifically interested in the way these images are used as a container for history that seems to repeat itself. I look at appropriation as a collaboration needed in order to complete the work
The Retranslation and Mediated Translation of Audiovisual Content in Multilingual Spain: Reasons and Market Trends
Creators: name: Chaume, Frederic
Publisher: name: Status Quaestionis
Year: 2019

description: Retranslations are the second, third, fourth or nth-translations of the same text produced at a later stage. In the case of audiovisual content, retranslations occur under certain circumstances. Focusing on Spain as a multilingual country, where regional languages demand new translations, frequently conceived as mediated translations, this article concentrates on the definition of retranslation and the differences between retranslation and mediated translation, and also lists the major reasons why retranslations, be them redubbings or resubtitlings, are commissioned and carried about. Economic, historical, linguistic and political issues triggering retranslations will also be dealt with, and some translatological conclusions will be drawn, as well as some new avenues of research grounded on retranslations.
description: Status Quaestionis, No 15 (2018): Exploring Audiovisual Retranslation
Impact Evidence - Sometimes a HUG is all you need
Creators: name: Admin, CardiffMet
Publisher: name: Cardiff Metropolitan University
Year: 2023
Subjects: Research, science and technology policy

description: Treadaway, C., Pool, J. and Johnson, A. (2020) Sometimes a HUG is all you need, Journal of Dementia Care, November/December, 28(6), pp. 32-34, providing evidence of research findings that the HUG improved wellbeing for 87% of participants.
 Made available here with permission - full issue available at: https://issuu.com/investorpublishing/docs/jdcnd20combinedmedres
Inventory Management with Partially Observed Nonstationary Demand
Creators: name: Bayraktar, Erhan
name: Ludkovski, Mike
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: General Finance (q-fin.GN)
subject: FOS: Mathematics
subject: FOS: Economics and business

description: We consider a continuous-time model for inventory management with Markov modulated non-stationary demands. We introduce active learning by assuming that the state of the world is unobserved and must be inferred by the manager. We also assume that demands are observed only when they are completely met. We first derive the explicit filtering equations and pass to an equivalent fully observed impulse control problem in terms of the sufficient statistics, the a posteriori probability process and the current inventory level. We then solve this equivalent formulation and directly characterize an optimal inventory policy. We also describe a computational procedure to calculate the value function and the optimal policy and present two numerical illustrations.
description: Keywords: Inventory management, Markov modulated Poisson process, hidden Markov model, partially observable demand, censored demand
Application of a two-stage iterative technique to a path planning issue in an indoor setting
Creators: name: Dahalan, A'qilah Ahmad
name: Saudi, Azali
name: Sulaiman, Jumat
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 49
subject: Mathematical sciences

description: Mobile robots are frequently associated with their ability to discover a collision-free pathway from any departure point to a certain destination in their surroundings. In this study, our attempts are to iteratively unravel a path planning issue via numerical techniques. Its foundation is a potential field approach that is driven by Laplace’s equation to stimulate the formation of a potential function over the designated regions. This potential field is naturally utilized as a guide in the global approach to robot path planning. In order to address the path planning challenges, this paper presented a two-stage iterative technique called Alternating Group Explicit (AGE) method. By utilizing a finite-difference technique, the analysis proves that a smooth path can be produced along the course. Additionally, the simulation outcomes demonstrate that the proposed numerical approach provides a faster solution than the earlier work.
Electric conductivity in graphene: Kubo model versus a nonlocal quantum field theory model
Creators: name: Rodriguez-Lopez, Pablo
name: Wang, Jian-Sheng
name: Antezza, Mauro
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We compare three models of graphene electric conductivity: a non-local Kubo model, a local model derived by Falkovsky, and finally, a non-local quantum field theory (QFT) polarization-based model. These models are supposed to provide consistent results since they are derived from the same Hamiltonian. While we confirm that the local model is a proper $\textbf{q}\to\textbf{0}$ limit of both the non-local Kubo and the non-local QFT model (once losses are added to this last model), we find hard inconsistencies in the non-local QFT model as derived and currently used in literature. In particular, in the genuine non-local region ($\textbf{q}\neq\textbf{0}$), the available QFT model shows an intrinsic non-physical plasma-like behavior for the interband transversal electric conductivity at low frequencies (even after introducing the unavoidable losses). The Kubo model, instead, shows the expected behavior, i.e., an almost constant electric conductivity as a function of frequency $ω$ with a gap for frequencies $\hbarω<\sqrt{(\hbar v_F q)^{2}+4m^{2}}$. We show that the Kubo and QFT models can be expressed using an identical Polarization operator $Π_{μν}(ω,\textbf{q})$, but they employ different expressions for the electric conductivity $σ_{μν}(ω,\textbf{q})$. In particular, the Kubo model uses a standard regularized expression, a direct consequence of Ohm's Law and causality, as we rigorously re-derive. We show that, once the standard regularized expression for $σ_{μν}(ω,\textbf{q})$ is used in the QFT model, and losses are included, the Kubo and QFT model coincide, and all its anomalies naturally disappear. Our findings show the necessity to appropriately define and regularize the electric conductivity to connect it with the available QFT model.
description: 33 pages, 3 figures
Viscoelasticity of Articular Cartilage and Ligament: Constitutive Modeling and Experiments
Creators: name: Ahsanizadeh, Sahand
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Applied Mechanics
subject: Engineering--Mechanical
subject: Constitutive Modeling
subject: Mechanical Experiments

description: Articular cartilage and ligament are soft fibrous connective tissues with apparent viscoelastic behavior. An anisotropic visco-hyperelastic constitutive model for these tissues has been proposed in this study based on the short-term and long-term internal variables. The constitutive model was particularized for both tissues, numerically implemented into the finite element software package ABAQUS and the material parameters were identified using the available experimental data. The constitutive model was able to capture both the short-term and long-term time-dependent response of these tissues with less difficulty in material characterization process. Due to the lack of the desired tensile experimental results on articular cartilage, the mechanical behavior of this tissue was also examined experimentally. The tensile stiffness of articular cartilage was found to be rate-dependent. It has been shown by numerical simulations that the strain-rate dependent tensile stiffness of collagen fibers can also contribute to the highly rate-dependent compressive response of articular cartilage, besides the fluid-driven viscoelasticity.
Intracellular Mechanisms Responsible for Trypsin-induced Increase in Transepithelial Resistance in Intestinal Epithelial Cells
Creators: name: Wadhwani, Aman
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Animal Physiology
subject: Biology--Molecular
subject: Physiology
subject: FOS: Biological sciences

description: Apical addition of serine proteases like trypsin to intestinal epithelial cell monolayers causes an increase in transepithelial resistance (RTE); however, the underlying mechanism is unknown. One way that proteases regulate cell function is by cleaving and activating the Protease Activated Receptor (PAR) family of G-proteincoupled receptors. In addition, trypsin has been shown to transactivate the epidermal growth factor receptor (EGFR) via activation of PAR2. Others have shown that activation of EGFR results in increased RTE in epithelial cells. Hence, we hypothesized that trypsin increases RTE by activating PARs and/or transactivating EGFR. Apical addition of trypsin caused a 300% increase in RTE. However, desensitization of PARs-1, 2 and 4 did not significantly affect the trypsin-induced ΔRTE. PD153035 or AG879 caused a significant dose-dependent decrease in trypsin-induced ΔRTE via inhibition of EGFR or ErBb2 tyrosine kinase respectively. Anti-transforming growth factor-α antibody reduced trypsininduced ΔRTE. The trypsin-induced ΔRTE was also reduced by the ERK-1/2 kinase inhibitor or PI3-kinase inhibitor but was not affected by Src-kinase inhibitor. The trypsininduced reduction in flux of FITC-dextran was prevented when cells were pre-treated with PD153035 or AG879. Our data suggest that trypsin increases RTE via transactivation of EGFR and ErbB2 independently of PAR activation. The trypsin induced RTE partially depends upon the activation of MAPK and PI3 kinase but not Src-kinase. Serine proteases may strengthen the epithelial barrier to enhance the efficiency of electrolyte, water and nutrient transport and may represent a method of countering barrier deficiencies associated with intestinal disorders.
Wave-Particle Duality in Classical Mechanics
Creators: name: Davydov, Alexander Y.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Until recently, wave-particle duality has been thought of as quantum principle without a counterpart in classical physics. This belief was challenged after (i) finding that average dynamics of a classical particle in strong inhomogeneous oscillating field resembles that of a quantum object and (ii) experimental discovery of "walkers" - macroscopic droplets that bounce on a vertically vibrating bath of the same fluid and can self-propell via interaction with the surface waves they generate. This paper exposes a new family of objects that can display both particle and wave features all together while strictly obeying laws of the Newtonian mechanics. In contrast to the previously known duality examples in classical physics, oscillating field or constant inflow of energy are not required for their existence. These objects behave deterministically provided that all their degrees of freedom are known to an observer. If, however, some degrees of freedom are unknown, observer can describe such objects only {\it probabilistically} and they manifest {\it weird} features similar to that of quantum particles. We show new classical counterparts of such quantum phenomena as particle interference, tunneling, above-barrier reflection, trapping on top of a barrier, and spontaneous emission of radiation. In the light of these findings, we hypothesize that quantum mechanics may \emph{emerge} as approximation from a more profound theory on a deeper level.
description: 10 pages, 9 figures, presented at the Heinz von Foerster Congress "Self-Organization and Emergence", University of Vienna, Nov 11-13, 2011
title: Dynamic risk analysis of offshore facilities in harsh environments
Creators: name: Fu, Jinjie
Publisher: name: Memorial University of Newfoundland
Year: 2020

description: With the frequent occurrence of extreme weather conditions, the safe operation of offshore facilities has been seriously challenged. Previous research attempted to simulate hydrodynamic performance or structure dynamic analysis to single environmental load. The present thesis proposes two methodologies to assess the operational risk quantitatively with combined wind and wave loads in a harsh environment considering the dependence structure between the real-time environmental parameters.
 The first developed model calculates the environmental loads using wind load response modeling, the Morison model and the ultimate limit states method. Then physical reliability models and joint probability functions derive the probabilities of failure at the level of structural components corresponding to combined loads. BN integrates the root probabilities according to the unit configuration to calculate the failure probability of the Semi-submersible Mobile Unit (SMU). The model is examined with a case study of the Ocean Ranger capsizing accident on Feb 15, 1982. The model uses the prevailing weather conditions and calculates a very high probability of failure 0.7812, which proves the robustness and effectiveness of the proposed model.
 The second proposed model is the copula-based bivariate operational failure assessment function, which assesses the dependencies among the real-time environmental parameters. Dependence function is described by the parameter δ from the wave data and concurrent meteorological observation data which are obtained from the Department of Fisheries and Oceans Canada (DFO). Then, the true model is selected with the help of Akaike’s information criterion (AIC) differences and Akaike weight. Comparing the results from the proposed approach and the traditional approach, it is shown that operational failure probabilities considering dependence are noteworthy higher and deserve attention. In other words, the traditional approach underestimates the operational risk of offshore facilities, especially in harsh environments.
Experimental and Modeling Phase Behaviour Studies of Water-Solvent-Bitumen System
Creators: name: Zirrahi, Mohsen
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Petroleum
subject: Bitumen
subject: Solvent Aided Thermal Recovery Method
subject: Cubic-plus-association equation of state
subject: water-solvent-bitumen system

description: Solvent-aided thermal recovery methods for production of bitumen and heavy oils have recently gained interest. In these methods, mixture of saturated steam and solvent is co-injected into bitumen and heavy oil reservoirs. Measurement and thermodynamic modeling of phase behaviour and thermo-physical properties are necessary for finding better understandings of complex systems of water-solvent-bitumen and more accurate numerical simulation and optimization of solvent-aided thermal recovery methods. In this work, binary systems of water-solvent, water-bitumen and solvent-bitumen were studied. For each binary system, a specified experimental apparatus was designed and fabricated. Water solubility in bitumen was measured at temperature ranges up to 493 K. Density and viscosity of bitumen rich phase were measured to investigate effect of water dissolution on thermo-physical properties of bitumen phase. For solvent-water system, water content of methane, ethane and propane were measured at high temperatures and moderate pressures. Solubility of methane, ethane, propane and butane in MacKay River bitumen were measured as well as density and viscosity of solvent-saturated bitumen phase. Cubic-plus-association equation of state (CPA-EoS) was used to model the phase behaviour of the binary systems. Soave-Redlich-Kwong (SRK) equation of state combined with Wertheim’s first-order thermodynamic perturbation theory (TPT-1) were used to treat the physical and association interactions, respectively. The results showed that CPA-EoS accurately reproduces the solubility data of water content of n-alkane solvents, water solubility in bitumen, and solvent solubility in bitumen accurately. Ternary system of water-solvent-bitumen was studied by measurement of solvent solubility in bitumen as well as density and viscosity of bitumen rich phase in the presence and absence of water. The results showed that the presence of water decreases the solvent solubility in bitumen phase. CPA-EoS tuned using the experimental solubility data of the binary systems was found capable in representing the phase behaviour of the ternary system. Correlations were developed for density and viscosity of bitumen rich phase using the experimental data of the binary systems.
ATP binding to a multisubunit enzyme: statistical thermodynamics analysis
Creators: name: Zhang, Yunxin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Due to inter-subunit communication, multisubunit enzymes usually hydrolyze ATP in a concerted fashion. However, so far the principle of this process remains poorly understood. In this study, from the viewpoint of statistical thermodynamics, a simple model is presented. In this model, we assume that the binding of ATP will change the potential of the corresponding enzyme subunit, and the degree of this change depends on the state of its adjacent subunits. The probability of enzyme in a given state satisfies the Boltzmann's distribution. Although it looks much simple, this model can fit the recent experimental data of chaperonin TRiC/CCT well. From this model, the dominant state of TRiC/CCT can be obtained. This study provided a new way to understand biophysical processes by statistical thermodynamics analysis.
TrafPS: A Shapley-based Visual Analytics Approach to Interpret Traffic
Creators: name: Feng, Zezheng
name: Jiang, Yifan
name: Wang, Hongjun
name: Fan, Zipei
name: Ma, Yuxin
name: Yang, Shuang-Hua
name: Qu, Huamin
name: Song, Xuan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Machine Learning (cs.LG)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Recent achievements in deep learning (DL) have shown its potential for predicting traffic flows. Such predictions are beneficial for understanding the situation and making decisions in traffic control. However, most state-of-the-art DL models are considered "black boxes" with little to no transparency for end users with respect to the underlying mechanisms. Some previous work tried to "open the black boxes" and increase the interpretability of how predictions are generated. However, it still remains challenging to handle complex models on large-scale spatio-temporal data and discover salient spatial and temporal patterns that significantly influence traffic flows. To overcome the challenges, we present TrafPS, a visual analytics approach for interpreting traffic prediction outcomes to support decision-making in traffic management and urban planning. The measurements, region SHAP and trajectory SHAP, are proposed to quantify the impact of flow patterns on urban traffic at different levels. Based on the task requirement from the domain experts, we employ an interactive visual interface for multi-aspect exploration and analysis of significant flow patterns. Two real-world case studies demonstrate the effectiveness of TrafPS in identifying key routes and decision-making support for urban planning.
Verification of Synthetic Core and Facies Templates with Seismic Properties and Rock Properties for Geo-cellular Modeling in Reservoir Characterization of a Producing Field
Creators: name: Alam, Mahbub
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geophysics
subject: Reservoir
subject: Modeling
subject: Facies
subject: Interpretation
subject: Synthetic
subject: Core
subject: Templates
subject: Geocellular
subject: Post-stack
subject: Seismic
subject: Evaluation
subject: Geological
subject: Geophysical
subject: Petrophysical
subject: logs

description: The objective of this thesis is to utilize synthetic core and customized facies templates to predict sub-seismic geological facies between wells using seismic data and rock physics measurements. This is a complex multi-scale data integration workflow with various data resolutions from the reservoir properties scale (micrometer level) to the seismic properties scale (meters to kilometer level). A new method of interpretation with synthetic core and predefined high definition facies templates was developed in reservoir characterization of a producing oil field. Implementation of this unique technique in reservoir evaluation will help to achieve maximum extraction of the existing resources, reduce uncertainties, and establish a higher level of confidence when dealing with new exploration projects. Predicting the sub-seismic scale facies was essentially needed to rely on well log data and core data with the underlying interpretation of the depositional processes that controlled the facies distribution. Well data and core data provided high resolution (centimeter level) vertical information of the reservoir properties, and seismic data became the most vital source of information in obtaining the spatial distribution of the reservoir properties in terms of the facies between the wells. Seismic attributes represented the rock physics properties of the related facies and hence demonstrated the relationships with the observed properties in the wells and their lateral distributions. Synthetic core incorporated reservoir attributes by creating artificial core data for those wells that have no core for reservoir properties, but which have gamma, neutron, and density logs. Rock physics, such as rock’s bulk modulus and shear modulus, were used to establish the facies-by-facies links between reservoir properties and their elastic responses. A case study was taken from the McMurray Formation in northern Alberta. A new approach to facies template-based rock elastic property values was developed to predict and map reservoir properties between the wells from a seismic volume. This improved method allows for the geological, geophysical, petrophysical, and geomechanical data to provide facies information to a geo-cellular model which enables quantitative analysis of reservoir properties and helps production evaluation.