cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comparison of hold-up measurements between clarified solution and solvent in pulp operations.
Creators: name: Touma, Nazir N.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1992
Subjects: subject: Engineering, Chemical.

description: Lowering the processing cost of liquid-liquid extraction by eliminating the clarification process, requires an understanding of the hydrodynamics and the operating regions of pulsed column when treating unclarified solutions. In order to achieve such an objective, an investigation has been carried out to measure and compare the total hold-up of clarified solutions and solvent in pulp operation for two potential commercial operations, uranium and gold tailings. Preliminary bench scale separation tests were carried out in order to evaluate phase separation characteristics and assist in the selection of the extractant phase with a minimum of emulsion formation. The results of these tests indicated good phase separation for the uranium aqueous tailings system. However, for the gold tailings system slight crud formation was noticed for the system chosen. Based on these bench scale tests, total hold-up measurements were made for eight systems using a pulsed sieve plate extraction column. The systems included both clarified solution (five) and solvent in pulp processing (three). Results of the clarified solutions test showed that, the hold-up increased with an increase in the amplitude of pulsing, dispersed phase flow rate and pH of the aqueous phase; while, hold-up is unaffected by the variation in the continuous phase flow rate. An increase in the pulse frequency decreased the hold-up in the mixer-settler region till it reached a minimum at the dispersion region. Then, in the emulsion region the hold-up increased with a further increase in pulse frequency. These results were in agreement with results obtained by Koren, Sehmel and Babb. Maintaining the operating conditions the same as in the clarified solution test; when spent uranium tailings were added to the aqueous phase, the column operated in the transition region between the mixer-settler and the emulsion region. The column remained in this region of operation till the pulse frequency or the pulse amplitude or both were increased. Stable emulsions obtained in gold tailings system prevented reliable hold-up measurements and suggested that this system can not be studied unless the crud formation is eliminated. A fractional factorial design was carried out during the experiments in order to minimize the number of runs and avoid erosion to the tailings pump. The experimental data of each system were fitted to a second order model as proposed by Bell and Babb in order to correlate the hold-up data. No common form of these equation models for predicting hold-up was noticed, each model had its unique identity. Different equations obtained from literature were used to predict the hold-up. In the case of uranium tailings system, The models suggested by Sato et al was found to be the best when uranium concentration was 10% by weight, while, Arthayukti's model gave better agreement for 25% uranium tailings.
Adaptive microfluidic gradient generator for quantitative chemotaxis experiments
Creators: name: Anielski, Alexander
name: Pfannes, Eva K. B.
name: Beta, Carsten
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2017
Subjects: subject: 500 Naturwissenschaften und Mathematik::530 Physik

description: Chemotactic motion in a chemical gradient is an essential cellular function that controls many processes in the living world. For a better understanding and more detailed modelling of the underlying mechanisms of chemotaxis, quantitative investigations in controlled environments are needed. We developed a setup that allows us to separately address the dependencies of the chemotactic motion on the average background concentration and on the gradient steepness of the chemoattractant. In particular, both the background concentration and the gradient steepness can be kept constant at the position of the cell while it moves along in the gradient direction. This is achieved by generating a well-defined chemoattractant gradient using flow photolysis. In this approach, the chemoattractant is released by a light-induced reaction from a caged precursor in a microfluidic flow chamber upstream of the cell. The flow photolysis approach is combined with an automated real-time cell tracker that determines changes in the cell position and triggers movement of the microscope stage such that the cell motion is compensated and the cell remains at the same position in the gradient profile. The gradient profile can be either determined experimentally using a caged fluorescent dye or may be alternatively determined by numerical solutions of the corresponding physical model. To demonstrate the function of this adaptive microfluidic gradient generator, we compare the chemotactic motion of Dictyostelium discoideum cells in a static gradient and in a gradient that adapts to the position of the moving cell.
Use of mobile and cordless phones and cognition in Australian primary school children: a prospective cohort study
Creators: name: Redmayne, Mary
name: Smith, Catherine L.
name: Benke, Geza
name: Croft, Rodney J.
name: Dalecki, Anna
name: Dimitriadis, Christina
name: Kaufman, Jordy
name: Macleod, Skye
name: Sim, Malcolm R.
name: Wolfe, Rory
name: Abramson, Michael J.
Publisher: name: Swinburne
Year: 2024
Subjects: classificationCode: 350505
subject: Occupational and workplace health and safety
classificationCode: 5201
subject: Applied and developmental psychology
classificationCode: 5202
subject: Biological psychology
classificationCode: 5203
subject: Clinical and health psychology
classificationCode: 5204
subject: Cognitive and computational psychology
classificationCode: 5205
subject: Social and personality psychology

description: Background: Use of mobile (MP) and cordless phones (CP) is common among young children, but whether the resulting radiofrequency exposure affects development of cognitive skills is not known. Small changes have been found in older children. This study focused on children's exposures to MP and CP and cognitive development. The hypothesis was that children who used these phones would display differences in cognitive function compared to those who did not. Methods: We recruited 619 fourth-grade students (8-11 years) from 37 schools around Melbourne and Wollongong, Australia. Participants completed a short questionnaire, a computerised cognitive test battery, and the Stroop colour-word test. Parents completed exposure questionnaires on their child's behalf. Analysis used multiple linear regression. The principal exposure-metrics were the total number of reported MP and CP calls weekly categorised into no use ('None'); use less than or equal to the median amount ('Some'); and use more than the median ('More'). The median number of calls/week was 2.5 for MP and 2.0 for CP. Results: MP and CP use for calls was low; and only 5 of 78 comparisons of phone use with cognitive measures were statistically significant. The reaction time to the response-inhibition task was slower in those who used an MP 'More' compared to the 'Some' use group and non-users. For CP use, the response time to the Stroop interference task was slower in the 'More' group versus the 'Some' group, and accuracy was worse in visual recognition and episodic memory tasks and the identification task. In an additional exploratory analysis, there was some evidence of a gender effect on mean reaction times. The highest users for both phone types were girls. Conclusions: Overall, there was little evidence cognitive function was associated with CP and MP use in this age group.Although there was some evidence that effects of MP and CP use on cognition may differ by gender, this needs further exploration. CP results may be more reliable as parents estimated children's phone use and the CPs were at home; results for CP use were broadly consistent with our earlier study of older children.
Charged Particles in Magnetic Fields from Strongly Coupled Plasmas to Whistler-Mode Chorus Waves
Creators: name: Vidal, Keith R
Publisher: name: University of Iowa
Year: 2024
Subjects: Magnetized Plasmas
MD simulations
Strongly Coupled Plasmas
Whistler-Mode Chorus Waves

description: One of the most fundamental questions in physics is how do magnetic fields effect the motion of charged particles. Many applications from magnetically confined fusion devices to the dynamics of particles in the Van Allen Radiation Belts rely on the understanding of this basic question. In this thesis I present research that either directly relates to charged particle motion in a magnetic field or indirectly through possible wave-particle interactions that can occur. The first part of this thesis explores transport properties of strongly coupled plasmas when strong magnetic fields are applied. Molecular dynamics simulations were used to show that strong magnetization significantly increases the space and time scales associated with interparticle correlations. The physical mechanism responsible is a channeling effect whereby particles are confined to move along narrow cylinders with a width characterized by the gyroradius and a length characterized by the collision mean free path. The predominant interactions are the $180^\circ$ collisions at the ends of the collision cylinders, resulting in a long-range correlation parallel to the magnetic field. Its influence was demonstrated through the increase in the domain size and run time of the simulations of the one-component plasma in order to reach converged self-diffusion coefficients. The second part of this thesis explores the propagation properties of the whistler-mode chorus waves in the inner magnetosphere of Earth. Wave-particle interactions between chorus waves and electrons may lead to a host of physical phenomena and are important actors in the loss and enhancement of electrons in the outer radiation belt. Multipoint electric and magnetic field measurements aboard the Van Allen Probes, MMS, and Arase satellites were used to determine the power spectra, wave normal and Poynting vector angles, and phase and power spectra cross-correlations in several case studies. The case studies showed a wide range of wave normal angles at low and high magnetic latitudes. Cross-correlations between the MMS probes determined a chorus correlation length scale of 75-115 km transverse to the field and 35-80 km parallel to the field. Poynting vector angles show evidence of chorus waves traveling towards the equator from case studies on 4/14/2016 and 9/22/2018. In another case study on 4/11/2018, evidence of chorus propagating across the magnetic field is presented. Additionally, results from the case studies were compared to ray tracing simulations.
Ascites’ neutrophil function is significantly impaired in patients with decompensated cirrhosis but can be restored by autologous plasma incubation
Creators: name: Engelmann, Cornelius
name: Becker, Christina
name: Boldt, Andreas
name: Herta, Toni
name: Boehlig, Albrecht
name: Splith, Katrin
name: Schmelzle, Moritz
name: Mueller, Niklas
name: Krohn, Sandra
name: Tautenhahn, Hans-Michael
name: Bartels, Michael
name: Sack, Ulrich
name: Berg, Thomas
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2016
Subjects: subject: Liver
subject: Liver diseases
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit

description: Systemic immune cell dysfunction is a typical feature of liver diseases and increases the risk of bacterial infection, especially spontaneous bacterial peritonitis. We evaluated functional properties of neutrophil granulocytes in blood and ascites of patients both with and without decompensated cirrhosis. We collected blood and ascites samples from 63 patients with cirrhosis and eight without cirrhosis. Phagocytosis activity (PA) and oxidative burst activity (OBA) were evaluated after ex vivo stimulation with E. coli, while fluorescence signals were measured by flow cytometry. Ascites’ neutrophil function tests were repeated after incubation with autologous plasma. Ascites’ neutrophils showed an impaired PA and OBA (median blood PA 98.1% (86.8–99.8) vs. ascites’ PA 50.5% (0.4–97.3), p
Exploration de la perception qu'ont les adolescentes du rôle des émotions dans leur éducation sexuelle.
Creators: name: Demers, Marielle.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1999
Subjects: subject: Education, Health.

description: La presente etude porte sur l'education sexuelle formelle et informelle des adolescentes. Plusieurs evaluations de programmes d'education sexuelle en milieu scolaire ont revele l'existence d'un probleme: l'education sexuelle permet d'acquerir des connaissances theoriques sans avoir d'impact sur les attitudes a l'egard de la sexualite ou sur le comportement sexuel de l'apprenant. Plusieurs experts ont souleve le fait que les programmes d'education sexuelle negligent la dimension affective. L'education sexuelle doit viser la santt sexuelle sous toutes ses facettes. Elle se definit comme etant: "l'integration des aspects somatiques, affectifs, intellectuels et sociaux de l'etre sexue, realisee selon des modalites epanouissantes qui valorisent la personnalite, la communication et l'amour" (Organisation mondiale de la sante, 1975, p. 25). Le but de cette etude est d'explorer le role de l'emotion, une dimension affective, dans l'education sexuelle formelle et informelle des adolescentes. Ainsi, la question de recherche peut-elle s'exprimer de la facon suivante: Quelle perception les adolescentes ont-elles du role des emotions dans leur education sexuelle? Nous abordons une reponse a cette question dans le cadre cognitif et motivationnel de l'emotion de Lazarus (1991). D'apres les donnees recueillies a l'aide d'entrevues semi-structurees, realisees aupres de sept participantes, nous pouvons confirmer que les emotions jouent un role important dans l'education sexuelle formelle et informelie des adolescentes. Les emotions positives facilitent l'apprentissage a la sexualite. Quant aux emotions negatives, elles semblent exercer un effet ambivalent: soit aider ou entraver cet apprentissage.
title: Spectacular surveillance
title: gender, white Christian nationalism, and Evangelical women in the pro-life movement
titleType: Subtitle
Creators: name: Burdick, Micki
Publisher: name: University of Iowa
Year: 2023
Subjects: conservatism
religion
reproductive justice
surveillance
public abstract
Abortion

description: This project explores Evangelical white women’s role within conservative social movements; I marshal a rhetorical reproductive justice lens to interrogate their participation in the pro-life movement in particular with specific attention to their deep-rooted racist beliefs and actions that have consequences for everyday reproductive healthcare. Within this dissertation, I dig deep into the history, lived experiences, and performances of white women’s involvement in conservative movements within the United States, focusing on the impact on contemporary reproductive politics. In interrogating these performances, I coin the term “spectacular surveillance,” which is a type of biopolitical surveillance that relies on emotion, femininity, and spectacular visuals to create a purposeful blockade of certain bodies and their access to healthcare, through rhetorics of shame, racism, and nationhood. Using the example of the pro-life movement specifically allows a small look into a larger problem surrounding conservative women’s emotionality, whiteness, and the consequences of the “invisible” activism of women in these movements for the nation itself and on the biopolitical sphere of the United States. Analyzing a rhetorical, ethnographic archive of white women’s Evangelical activism through this broader lens of reproductive justice conveys the historical stakes of the pro-life movement and contextualizes the spectacular surveillance of reproductive politics and bodies in the Unites States.
On the Self: An existential-phenomenological-hermeneutic study towards a new understanding of the Self.
Creators: name: Gingras, Normand.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2000
Subjects: subject: Psychology, General.

description: This thesis aims to arrive at a new understanding of the Self by taking an existential-phenomenological-hermeneutic approach to critically analyse several conceptualisations of the Self developed during this century. Through the synthesis of their insights, we articulate our own necessary dimensions of a conceptualisation of Self. In the first chapter, we articulate the basic notions of phenomenology, existential phenomenology and hermeneutics, as well as some of their limitations, following which we synthesise their opposite emphases, which we express respectively as those of understanding and explanation, taking place in an overall activity of interpretation within the context of the existential-hermeneutic circle. This synthesis is taken as the basis for a larger one between psychology as a human science and psychology as a natural science. This constitutes an initial contribution of the thesis, from which we establish the selection and evaluation criteria for the ensuing analysis of the conceptualisations of Self. In the second chapter, we present each author's conceptualisation, followed by the critical analysis of its understanding and explanatory aspects. In the third chapter, we articulate the necessary dimensions of a conceptualisation of Self, where an embodied primordial Self, as a conscious-embodied-subject-in-relationship-to-a-world-which-it-interprets, is at the centre of a constellation of secondary Selves, themselves seen as habitual crystallisations of lived experience in the primordial Self's four interrelated dimensions of materiality, interrelationship, interpretation and affection. Other aspects of Self, such as the Self/not-Self distinction, the Self-as-subject/Self-as-object distinction, Self-identity, and Self constancy are also incorporated.
title: Teaching
title: side effects may occur the conditions of teaching leading to burnout
titleType: Subtitle
Creators: name: Forbes, Morgan J.
Publisher: name: University of Iowa
Year: 2026
Subjects: A/r/tography
Care Profession
Teacher Burnout
Burnout
Public Education

description: This research explores the conditions of teaching in public education about the researchers' feelings of burnout through a/r/tography and artmaking. The study focuses on how a/r/togrphay, as a creative and reflective methodology, explores my experience of teacher burnout and what insights this process can offer. Specifically, the research question sought to answer, through art making, whether teaching conditions in a Title 1 district are sustainable. If the conditions of teaching in public schools continue to be ignored, the number of teachers leaving the profession will continue to rise. The study indicates that teacher burnout is not the individual teachers' responsibility but a side effect of systemic issues within the public education system.
Kooperative Informationsinfrastruktur für wissenschaftliche Blogs (Infra Wiss Blogs)
Creators: name: Pampel, Heinz
name: Rothfritz, Laura
Publisher: name: Zenodo
Year: 2024

description: Ob als Plattform für die interne Wissenschaftskommunikation, als Tagebuch zur Dokumentation von Forschungsarbeiten im Sinne von Open Science oder als Schaufenster für die Vermittlung von wissenschaftlichen Erkenntnissen in die Breite - Blogs sind ein fester Bestandteil der digitalen Wissenschaftskommunikation. Herausforderungen für die Wissenschaftsblogs ergeben sich durch offene Fragen zur dauerhaften Sicherung der Blogposts sowie den häufig noch fehlenden Nachweis in bibliothekarischen Nachweisinstrumenten. Diese und weitere Themenfelder rund um die Sicherstellung der langfristigen Zugänglichkeit der Wissenschaftsblogs hemmen die Nachhaltigkeit dieses Publikationstyps. 

Das Projekt Infra Wiss Blogs unterstützt bloggende Forschende und Einrichtungen der Informationsinfrastruktur bei der Entwicklung von Lösungsansätzen für die Sicherung der dauerhaften Zugänglichkeit von wissenschaftlichen Blogs in Deutschland. 

Zur Bearbeitung der Lösungsansätze organisiert und moderiert das Projekt einen Diskussionsprozess zur Schaffung eines verteilten Systems zur dauerhaften Speicherung und Zugänglichmachung von wissenschaftlichen Blogs. Aufgrund der Komplexität und des Umfangs des adressierten Desiderats wird die Schaffung einer solchen Informationsinfrastruktur für die Forschung nur in Kooperation zu bewerkstelligen sein. 

Mit dem Vorhaben werden erstmals Kommunikationsforen zu diesem Themenfeld organisiert, die Wissenschaft und Infrastruktur zusammenbringen und so die Vernetzung der Stakeholder fördern. Auf diese Weise werden Abstimmungen zur Gestaltung einer verteilten, organisatorischen, technologischen und kooperativ getragenen Infrastruktur zur Sicherung der dauerhaften Zugänglichkeit von wissenschaftlichen Blogs organisiert. Dabei steht die Abstimmung von Akteur:innen, Prozessen und Standards im Fokus. Darüber hinaus wird das Vorhaben aus soziotechnischer Perspektive informationswissenschaftlich begleitet.
Finding presheaf models for the finite pi-calculus.
Creators: name: Beaulieu, Guy.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2002
Subjects: subject: Mathematics.

description: This thesis provides a fully-abstract (set theoretical) model for the finite pi-calculus with respect to late-bisimulation and late-equivalence relations. This is achieved by amalgamating the works by M. P. Fiore, E. Moggi and D. Sangiorgi, and I. Stark. In their respective works the authors construct categorical models, and define a meta-language in which the finite pi-calculus can be interpreted. We discuss the general properties a categorical model should satisfy to be considered an appropriate model for the finite pi-calculus. In particular, I show that the categorical model based on the syntax provides a fully abstract model for the finite pi-calculus. Finally, I include all the details of the model which were often omitted by the above authors. We extend the discussion by examining alternative categorical constructs for the model of the finite pi-calculus, for example we use doubly closed categories which are a main focus of Bunched Logic by P. W. O'Hearn and D. J. Pym.
Assessment in Immersive Virtual Environments : Cases for Learning, of Learning, and as Learning
Creators: name: Code, Jillianne
name: Zap, Nick
Publisher: name: Association for the Advancement of Computing in Education (AACE)
Year: 2022

description: The key to education reform lies in exploring alternative forms of assessment. Alternative performance assessments provide a more valid measure than multiple-choice tests of students’ conceptual understanding and higher-level skills such as problem solving and inquiry. Advances in game-based and virtual environment technologies are creating new possibilities for learning and assessment. One such possibility is through the use of immersive 3D technologies that aim to situate students in an environment that promotes problem solving and inquiry and sets the context for assessment. This paper describes three on-going research projects that are using immersive 3D virtual environments as a platform in which to enable the summative, self-, and formative assessments of student learning.
Positionen zivilgesellschaftlicher Akteure und von Parteien zu Wettbewerb im Gesundheitswesen
Creators: name: Brünger, Martin
name: Grube, Maike
name: Buttmann, Nina
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2013
Subjects: subject: Wettbewerb
subject: Gesundheitswesen
subject: Krankenversicherungssystem
subject: Krankenversicherung
subject: Parteien
subject: Zivilgesellschaft
subject: competition
subject: health system
subject: health insurance
subject: parties
subject: civil society
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Eine zentrale Rolle in der gesundheitspolitischen Auseinandersetzung spielen Ausmaß und Ausgestaltung des Wettbewerbs im Gesundheitssystem. Schwerpunkt dieses Artikels ist die Darstellung der unterschiedlichen Standpunkte von Parteien und zivilgesellschaftlichen Akteuren zum Systemwettbewerb zwischen Gesetzlicher (GKV) und Privater Krankenversicherung (PKV) im dualen Krankenversicherungssystem.
description: A central issue in current health policy debates is the role of competition and its organisation in the German health care system. This article focuses on the different positions of political parties and civil society actors on competition between statutory health insurance (SHI) and private health insurance (PHI) in the dual health insurance system.
Relatório Vulnerabilidades de Negócios da Economia Criativa e Turismo em Pirapora - MG
Creators: name: Peron de Paula, Pablo
name: Marques Miranda, Enzo
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Creative Economy
subject: Pirapora
subject: Circle of Action and Reflection (CAR)
subject: Tourism
subject: FOS: Economics and business
subject: Policy
subject: Governance
subject: vulnerability

description: O Relatório de Vulnerabilidades de Negócios da Economia Criativa e Turismo em Pirapora – MG foi apresentado em 04 de abril de 2025, esse trabalho é fruto do projeto de pesquisa em Vulnerabilidade na Economia Criativa. Na sequência, realizou‑se o Círculo de Ação e Reflexão (CAR) – Políticas Públicas, que proporcionou aos membros da comunidade local um espaço para que expressem suas percepções e sugestões sobre estratégias e políticas públicas para o fortalecimento das atividades voltadas ao turismo e economia criativa.
Improving active browsing with the negative inference and selective search methods.
Creators: name: Ng Yuen Yan, John.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1997
Subjects: subject: Information Science.

description: Active Browsing is a technique whereby a learning appretice assists a designer in locating software artifacts in reusable software libraries by inferring the user's search goal from the user's normal browsing actions. The aim of this research is to improve the response time and success rate of Active Browsing. Two methods are proposed for this. The Negative Inference method improves the success rate of active browsing by producing a more accurate representation of the user's goal. The Selective Search method improves the response time of the learning apprentice by limiting the system's evaluation of the library to a fraction of the library. The Negative Inference method adds finer-grained features to the system's internal representation of the user's goal and rules for negative inference (i.e., inferring features that the user is not interested in). The Selective Search method defines a technique for partitioning the library and a strategy, called a migration policy, which determine which items to evaluate. An implementation of both methods, based around a browser used to explore object oriented code, is described. This implementation is used to validate experimentally both methods. With Negative Inference the active browser's success rate is twice that of the normal active browser, and it ranks the search goal much more accurately at all stages of the search. With selective search, the active browser achieves similar success rate while only evaluating a quarter of the library.
title: Gratuitous hospitality
title: the body as job site and emotional labor in the service and hospitality industry
titleType: Subtitle
Creators: name: Kiesewetter, Katie
Publisher: name: University of Iowa
Year: 2023
Subjects: art
feminism
labor
precarity
restaurant
tips
public abstract
Labor Economics

description: United States service and hospitality workers in front-of-house roles at bars and restaurants are subject to oppressive and exploitative wage practices, specifically tipped labor with a lower than minimum hourly wage supplemented by tip credits. These practices influence workers to perform for their income, as the customer provides the majority of their pay, not the employer. Due to this established power dynamic, the exchange of goods and services (i.e. preparing and serving food and beverages) is not the only labor that a worker must perform to earn an income. The customer may decide how much to tip based on their perception and judgment of the worker themself. Bodies, presentation, identity politics, and precarity complicate these exchanges. In a combined written and visual thesis, I explore these problems through performance, text, design, and installation, using autoethnography as a central method. Bringing art history and practice together with intersectional gender studies and labor histories, I also trace a critical genealogy of the complex legacy of tipped work in the United States. “Gratuitous Hospitality” defamiliarizes normalized labor practices and lays out the expressive and intimate interactions through which identities, most specifically race and gender, have historically influenced the lives and incomes of service and hospitality workers.
A Configurable Coprocessor Architecture for Fuzzy Logic Algorithms Implemented on a FPGA
Creators: name: Thareja, Vishal
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2010
Subjects: subject: Engineering, Electronics and Electrical.

description: Fuzzy Logic (FL) has grown to be a popular algorithm for designing embedded control systems. FL simplifies the design of a control system, but there are many challenges in implementing FL in embedded control systems. Deep knowledge of hardware design as well as processor integration is required to embed FL in a control system. The proposed design methodology takes a FL algorithm modelled in Matlab and configures the coprocessor architecture to the control behaviours of the model. The coprocessor is then automatically integrated with the Leon3 processor and the entire design is compiled and synthesized to be implemented on an FPGA. The model parameters configure behavioural VHDL generics without changing the coprocessor architecture and automated software scripts help generate the design from model to VHDL easily and quickly. The coprocessor architecture achieves high throughput with minimal area utilization by incorporating FPGA on-chip resources in the coprocessor architecture. FL implementation with the configurable coprocessor architecture with processor offers better flexibility over pure hardware implementations and better performance over pure software implementations. In comparison with other hardware FL implementations, this thesis presents a design flow from model to hardware such that the number of design iterations is reduced. This thesis reviews existing hardware FL architectures, presents a proof of concept design to illustrate the challenges, details the coprocessor architecture and software configuration, and finally presents experimentation results using FL case studies.
Observation of the inverse Doppler effect in negative-index materials at optical frequencies
Creators: name: Chen, Jiabi
name: Wang, Yan
name: Jia, Baohua
name: Geng, Tao
name: Li, Xiangping
name: Feng, Lie
name: Qian, Wei
name: Liang, Bingming
name: Zhang, Xuanxiong
name: Gu, Min
name: Zhuang, Songlin
Publisher: name: Swinburne
Year: 2024

description: The Doppler effect is a fundamental frequency shift phenomenon that occurs whenever a wave source and an observer are moving with respect to one another. It has well-established applications in astrophotonics, biological diagnostics, weather and aircraft radar systems, velocimetry and vibrometry. The counterintuitive inverse Doppler effect was theoretically predicted in 1968 by Veselago1 in negative-index materials2. However, because of the tremendous challenges of frequency shift measurements inside such materials, most investigations of the inverse Doppler effect have been limited to theoretical predictions and numerical simulations3, 4, 5, 6, 7. Indirect experimental measurements have been conducted only in nonlinear transmission lines at ~1–2 GHz (ref. 8) and in acoustic media at 1–3 kHz (ref. 9). Here, we report the first experimental observation of the inverse Doppler shift at an optical frequency (λ = 10.6 µm) by refracting a laser beam in a photonic-crystal prism that has the properties of a negative-index material.
Influences of Orally Taken Carotenoid-Rich Curly Kale Extract on Collagen I/Elastin Index of the Skin
Creators: name: Meinke, Martina C.
name: Nowbary, Ceylan K.
name: Schanzer, Sabine
name: Vollert, Henning
name: Lademann, Juergen
name: Darvin, Maxim E.
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2017
Subjects: subject: skin aging
subject: two photon tomography
subject: reflectance spectroscopy
subject: noninvasive methods
subject: auto fluorescence
subject: second harmonic generation
subject: nutrition
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit

description: Two differently designed, spatially resolved reflectance spectroscopy-based scanners and two-photon tomography were used for noninvasive in vivo determination of cutaneous carotenoids, and collagen I/elastin aging index of dermis, respectively, in the skin of 29 healthy female volunteers between 40 and 56 years of age. The volunteers received a supplement in the form of a carotenoid-rich natural curly kale extract containing 1650 µg of carotenoids in total (three capsules of 550 µg), once a day. Measurements were taken before, after 5 months and after 10 months of daily supplementation. The results showed significantly increased values for the cutaneous carotenoids and the collagen I/elastin aging index of dermis 5 and 10 months after the beginning of the study. The obtained results show that a natural carotenoid- rich extract could prevent the aging-related collagen I degradation in the dermis and improve the extracellular matrix.
title: Authenticity on the stage
title: a journey
titleType: Subtitle
Creators: name: Lopez, Orlando
Publisher: name: University of Iowa
Year: 2024

description: My thesis is based off my three years of training in the University of Iowa’s MFA Acting program. In this thesis I lay out a step-by-step process on how I approach a role in a theatrical play. My process is based in bringing my own authenticity onto the stage using the vessel of the character. Using empathy and answering a specific set of questions as specific as possible, I use mnemonic devices like music or pictures to help me truly believe in the given circumstances of my character. Resulting in a truthful, authentic, and moving performance.
description: Using experiences from classes and productions throughout my time here at the University of Iowa Theatre Department, I explain how I discovered this process for myself and why it works for me.
The role of viral protein kinases in herpes simplex virus type-1
Creators: name: Masoud Bahnamiri, Masoudeh
Publisher: name: University of Iowa
Year: 2023
Subjects: public abstract

description: Herpesviruses translocate their nucleocapsids from the nucleus to the cytoplasm by capsid envelopment into the inner nuclear membrane and de-envelopment from the outer nuclear membrane, a process that is coordinated by energetically favorable self-association of nuclear egress complex (NEC) proteins, pUL34, and pUL31. Capsid envelopment is associated with alteration in the nuclear architecture and local redistribution of the nuclear lamina. NEC recruits protein kinases, including the virus-encoded protein kinase, pUS3, to the nuclear rim to regulate both lamina redistribution and NEC localization. Examining the role of capsid envelopment in the changes of the nuclear architecture suggests that disruption of the nuclear lamina is a preparation step prior to capsid envelopment. In the absence of capsid envelopment, lamin A/C becomes concentrated at the nuclear envelope in a pUL34-independent and cell type-specific manner, suggesting that ongoing nuclear egress may be required for the dispersal of lamins. pUS3 catalytically-inactive mutants cause accumulation of perinuclear enveloped capsids, formation of NEC aggregates, and enhanced lamina disruption. Interestingly, mutation of US3 in the absence of capsids results in identical NEC aggregation and lamina disruption phenotypes, and NEC aggregates correspond to multi-folded nuclear membrane structures, suggesting that pUS3’s specific role in nuclear egress is to control NEC self-association and membrane deformation. pUS3 is also involved in many other viral and cellular functions, but its regulation is not understood. pUS3-mediated regulation of the NEC is suggested to be selectively regulated by another viral protein kinase, pUL13. However, the comparison of HSV-1 UL13 catalytically-inactive and US3 catalytically-inactive mutants revealed no defined classes of US3 substrates to be UL13-dependent, nor did mutation of UL13 induce a de-envelopment defect like that seen in US3 mutants. Accordingly, mutation of all UL13 kinase motifs in pUS3, individually or in aggregate, does not affect NEC localization, suggesting that pUL13-mediated regulation of the NEC is US3-independent.
The combined roles of technology and regulation in meeting wireless broadband spectrum demands in Australia
Creators: name: Du Fresne, Thaddeus
Publisher: name: Swinburne
Year: 2024

description: The explosion of broadband communications usage is influencing many areas of society, government and industry. Wireless technologies have an important role to play in contributing to the meeting these demands. However wireless technologies face a unique constraint to fulfilling the demands of broadband growth: there are physical limitations to its capability imposed by the finite amount of radiofrequency spectrum. Addressing this constraint involves the development, implementation and facilitation of a range of mechanisms across the domains of technology vendors, network operators and the spectrum regulator respectively. This article takes an informative look at the drivers, limitations and solutions to the issue of wireless broadband spectrum bandwidth constraints across three groups of stakeholders.
Academic success online : The mediating role of self-efficacy on personality and academic performance
Creators: name: Code, Jillianne
name: Zap, Nick
name: Ralph, Rachel
Publisher: name: Association for the Advancement of Computing in Education (AACE)
Year: 2022

description: Academic success in any context is dependent upon a student's belief in their ability to succeed. While learning online, a students’ self-efficacy is affected by their confidence in their ability to interact within the online environment. With the proliferation of personalized learning and the growth of Massive Open Online Courses, this growing trend is a shift in focus from the centralized brick-and-mortar locus of control, to one of enabling student choice and agency for how, when, and where they learn. In the pre-pandemic setting, this research study examined the personality types of students enrolled in eight sections of four online courses in educational technology, and the role self-efficacy for learning online played in their academic performance. Key findings reveal that personality affects learners’ academic achievement is moderately significant, self-efficacy for online learning affects learners’ academic achievement in a small but significant way, and student conscientiousness and academic performance were significantly and fully mediated by self-efficacy for learning online while controlling for gender and English language proficiency. There were no mediation effects with the other personality traits. A discussion around learning design strategies is provided. The authors recommend that institutions adopt more flexible learning options for teaching and learning that include both online and blended learning options that provide student’s choice and agency over the learning experience but also enable the institution to be better equipped for what the uncertain future of education holds.
Optimal design of fibre composite pressure vessels.
Creators: name: Tenace, Michael A.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 1990
Subjects: subject: Engineering, Mechanical.

description: Fibre composite pressure vessels are replacing conventional metallic vessels because of their higher efficiencies (stored energy/unit weight). In this study, multi-layered fibre composite pressure vessels have been designed using a Direct Search method to simultaneously determine the optimal design parameters of layer thickness and wind angle (based upon maximum vessel efficiency according to an interactive failure theory). It was shown that the ability of the fibre composite pressure vessel to resist the internal pressure without failure increased with increasing total wall thickness, up to a certain limit, after which little or no increase in failure pressure was possible. It was also shown that an improved design of a fibre composite pressure vessel can be accomplished by increasing the number of individual equal thickness layers in the vessel wall. Additional improvement in the design can be obtained by allowing the thickness of each individual layer to vary, especially for thicker vessels. Peak vessel efficiency generally occurred at the same wall thickness, implying the efficiency is mostly affected by the type of fibre/matrix combination selected. A slight improvement in efficiency was noticed by increasing the number of individual layers and allowing their thicknesses to vary. Finally, the manufacturing and testing aspects are described.
Asymmetric cell division during T cell development controls downstream fate
Creators: name: Pham, Kim
name: Shimoni, Raz
name: Charnley, Mirren
name: Ludford-Menting, Mandy J.
name: Hawkins, Edwin D.
name: Ramsbottom, Kelly
name: Oliaro, Jane
name: Izon, David
name: Ting, Stephen B.
name: Reynolds, Joseph
name: Lythe, Grant
name: Molina-Paris, Carmen
name: Melichar, Heather
name: Robey, Ellen
name: Humbert, Patrick O.
name: Gu, Min
name: Russell, Sarah
Publisher: name: Swinburne
Year: 2024
Subjects: classificationCode: 310102
subject: Cell development, proliferation and death

description: During mammalian T cell development, the requirement for expansion of many individual T cell clones, rather than merely expansion of the entire T cell population, suggests a possible role for asymmetric cell division (ACD). We show that ACD of developing T cells controls cell fate through differential inheritance of cell fate determinants Numb and α-Adaptin. ACD occurs specifically during the β-selection stage of T cell development, and subsequent divisions are predominantly symmetric. ACD is controlled by interaction with stromal cells and chemokine receptor signaling and uses a conserved network of polarity regulators. The disruption of polarity by deletion of the polarity regulator, Scribble, or the altered inheritance of fate determinants impacts subsequent fate decisions to influence the numbers of DN4 cells arising after the β-selection checkpoint. These findings indicate that ACD enables the thymic microenvironment to orchestrate fate decisions related to differentiation and self-renewal.
Improving compliance to colorectal cancer screening using blood and stool based tests in patients refusing screening colonoscopy in Germany
Creators: name: Adler, Andreas
name: Geiger, Sebastian
name: Keil, Anne
name: Bias, Harald
name: Schatz, Philipp
name: DeVos, Theo
name: Dhein, Jens
name: Zimmermann, Mathias
name: Tauber, Rudolf
name: Wiedenmann, Bertram
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2014
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit

description: Background Despite strong recommendations for colorectal cancer (CRC) screening, participation rates are low. Understanding factors that affect screening choices is essential to developing future screening strategies. Therefore, this study assessed patient willingness to use non-invasive stool or blood based screening tests after refusing colonoscopy. Methods Participants were recruited during regular consultations. Demographic, health, psychological and socioeconomic factors were recorded. All subjects were advised to undergo screening by colonoscopy. Subjects who refused colonoscopy were offered a choice of non-invasive tests. Subjects who selected stool testing received a collection kit and instructions; subjects who selected plasma testing had a blood draw during the office visit. Stool samples were tested with the Hb/Hp Complex Elisa test, and blood samples were tested with the Epi proColon® 2.0 test. Patients who were positive for either were advised to have a diagnostic colonoscopy. Results 63 of 172 subjects were compliant to screening colonoscopy (37%). 106 of the 109 subjects who refused colonoscopy accepted an alternative non-invasive method (97%). 90 selected the Septin9 blood test (83%), 16 selected a stool test (15%) and 3 refused any test (3%). Reasons for blood test preference included convenience of an office draw, overall convenience and less time consuming procedure. Conclusions 97% of subjects refusing colonoscopy accepted a non-invasive screening test of which 83% chose the Septin9 blood test. The observation that participation can be increased by offering non-invasive tests, and that a blood test is the preferred option should be validated in a prospective trial in the screening setting.
Translaminar Cortical Membrane Potential Synchrony in Behaving Mice
Creators: name: Zhao, Wen-Jie
name: Kremkow, Jens
name: Poulet, James F. A.
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2016
Subjects: subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie

description: Summary The synchronized activity of six layers of cortical neurons is critical for sensory perception and the control of voluntary behavior, but little is known about the synaptic mechanisms of cortical synchrony across layers in behaving animals. We made single and dual whole-cell recordings from the primary somatosensory forepaw cortex in awake mice and show that L2/3 and L5 excitatory neurons have layer-specific intrinsic properties and membrane potential dynamics that shape laminar-specific firing rates and subthreshold synchrony. First, while sensory and movement-evoked synaptic input was tightly correlated across layers, spontaneous action potentials and slow spontaneous subthreshold fluctuations had laminar-specific timing; second, longer duration forepaw movement was associated with a decorrelation of subthreshold activity; third, spontaneous and sensory-evoked forepaw movements were signaled more strongly by L5 than L2/3 neurons. Together, our data suggest that the degree of translaminar synchrony is dependent upon the origin (sensory, spontaneous, and movement) of the synaptic input.
Velvet covering, Ribbonlike leaves
Creators: name: Pagán Gómez, Mariceliz
Publisher: name: University of Iowa
Year: 2023
Subjects: Bio art
Ceramics
Installation
Papermaking
public abstract
Natural History
Printmaking

description: “Velvet covering, Ribbonlike leaves” is a mix media installation that reflects on natural history museums/laboratories and their specimen preservation display practices as related to artistic practice display and the act of collecting as a way of emotionally and creatively engaging with natural environment. The work examines the relationship between artistic and biological process and the similarities they possess as both displaying gradients of transformation. The installation features color etchings, handmade paper sculptures, ceramics and woodworks informed by visits to the specimen collections from the Lakeside Laboratory and University of Iowa Natural History Museum specimen collection and settings intertwined with personal found object collections from field studies from Iowa City and Puerto Rico.