cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Collaborative inquiry : teacher professional development as situated, responsive co-construction of practice and learning
Creators: name: Schnellert, Leyton M.
Publisher: name: University of British Columbia
Year: 2011

description: The research reported here grappled with the challenge of designing and facilitating teacher professional development that bridges theory and practice so as to enhance teacher practice and learning and student learning outcomes. A case study design was employed to study a community of inquiry (CoI) located within a Southern Arctic school district within which classroom teachers and special education teachers worked as partners to improve their writing instruction and increase access to learning and outcomes for students in inclusive classrooms. This research addressed three questions: (1) what practices did educators engage in as co-teachers within a CoI to consider, explore, and construct more inclusive writing instruction?; (2) how and why did collaborative, action-oriented inquiry cycles help teachers to develop understandings and practices that addressed, nurtured and supported diverse students’ literacy learning?; and (3) what conditions and qualities within professional development activities supported teacher learning and development of practice?. Findings suggested that teachers can make situated changes to practice that increase diverse students’ access to curriculum and learning when they: (1) set, enact, monitor and adapt context-specific goals for both students and themselves; (2) work collaboratively and problem-solve with others while trying to make shifts in practice; and (3) draw in resources as supports that can be adapted within their inquiries. In addition, co-teaching was found to be an approach that not only increased student access to curriculum and learning but had significant potential to support teacher learning and sustained shifts in practice. Implications for teachers’ learning, changes to practice, collaboration and professional development are discussed.
Phenotyping and genomic structural equation modelling of normal and psychopathological personality across eating disorders, anxiety, and depression
Creators: name: Zvrskovec, Johan
name: Davies, Helena L
Publisher: name: OSF Registries
Year: 2020
Subjects: subject: Life Sciences
subject: Social and Behavioral Sciences

description: To advance the discovery of aetiological biological mechanisms and biomarkers, and to find new diagnostic or treatment-related disorder subtypes for psychiatric disorders, a new focus on symptomatic endophenotypes is needed. This project will increase our understanding of how both normal and psychopathological personality structures, and their underlying phenotypic and genetic latent factors, differ across DSM-5-defined eating disorder diagnoses, depression, and anxiety. Our study will expand findings within the current literature because of our large sample size (n = 23,000 - 30,000) and unusually detailed phenotyping across both psychiatric diagnoses and the general population, enabling powerful exploration of psychopathological personality traits. This project will demonstrate the utility of developing and applying more detailed phenotyping for genomic research. Characterised genetic and environmental associations may increase the likelihood of detecting biological markers involved in the development of complex disorders, improve treatment options, and deepen our understanding of potential risk factors.
The General Theory of Tax Avoidance
Creators: name: Stiglitz, Joseph E.
Publisher: name: Columbia University
Year: 1985
Subjects: Economics

description: This article discusses the general theory of tax avoidance. Explains a general set of principles of tax avoidance. Discuss what determines the limits on the extent to which individuals can take advantage of tax avoidance schemes. Tax arbitrage across income strains facing different tax treatment. Opportunities for avoidance within the current tax structure that, under the hypothesis that capital markets are perfect.
Motion generates entanglement
Creators: name: Friis, Nicolai
name: Bruschi, David Edward
name: Louko, Jorma
name: Fuentes, Ivette
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We demonstrate entanglement generation between mode pairs of a quantum field in a nonuniformly accelerated cavity in Minkowski space-time. The effect is sensitive to the initial state, the choice of the mode pair and bosonic versus fermionic statistics, and it can be stronger by orders of magnitude than the entanglement degradation between a nonuniformly accelerated cavity and an inertial cavity. Detailed results are obtained for massless scalar and spinor fields in (1+1) dimensions. By the equivalence principle, the results provide a model of entanglement generation by gravitational effects.
description: 5 pages, 2 figures, Ivette Fuentes previously published as Ivette Fuentes-Guridi and Ivette Fuentes-Schuller; v3: minor changes, updated references
title: Breast cancer staging and response evaluation by computed tomography: a practical guide for radiologists
Creators: name: Planells Alduvin, Mariana Cecilia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Chemotherapy
subject: CT
subject: Oncology
subject: Breast
subject: Oncologic Imaging
subject: Diagnostic procedure
subject: Staging
subject: Cancer
subject: Metastases
subject: Toxicity
subject: Not applicable

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To understand when and how CT is used for the evaluation of patients with breast cancer, for initial staging or follow-up. To show capabilities and limitations of CT for primary breast tumour and lymph node evaluation and preoperative planning. To...
title: CT for evaluation of gastrointestinal stromal tumors: a retrospective analysis
Creators: name: singhal, priyanka
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Not applicable
subject: Neoplasia
subject: Diagnostic procedure
subject: CT
subject: Oncology
subject: Gastrointestinal tract
subject: Abdomen
subject: GI Tract

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To illustrate the various CT features of GISTs in different locations. To identify the various atypical radiologic manifestations of...
The Social Cost of Labor and Project Evaluation: A General Approach
Creators: name: Stiglitz, Joseph E.
name: Sah, Raaj Kumar
Publisher: name: Columbia University
Year: 1985
Subjects: Economics

description: Presents a general approach to the social cost of labor and project evaluation. Differences between the domestic and international prices; Equilibrium mechanisms in the economy; Consequences of industrial employment creation on agriculture.
Diophantine problems in polynomial theory
Creators: name: Lee, Paul David
Publisher: name: University of British Columbia
Year: 2011

description: Algebraic curves and surfaces are playing an increasing role in modern mathematics. From the well known applications to cryptography, to computer vision and manufacturing, studying these curves is a prevalent problem that is appearing more often. With the advancement of computers, dramatic progress has been made in all branches of algebraic computation. In particular, computer algebra software has made it much easier to find rational or integral points on algebraic curves. Computers have also made it easier to obtain rational parametrizations of certain curves and surfaces. Each algebraic curve has an associated genus, essentially a classification, that determines its topological structure. Advancements on methods and theory on curves of genus 0, 1 and 2 have been made in recent years. Curves of genus 0 are the only algebraic curves that you can obtain a rational parametrization for. Curves of genus 1 (also known as elliptic curves) have the property that their rational points have a group structure and thus one can call upon the massive field of group theory to help with their study. Curves of higher genus (such as genus 2) do not have the background and theory that genus 0 and 1 do but recent advancements in theory have rapidly expanded advancements on the topic. In this thesis, we will first outline some methods used to find rational and integral points on curves of genus 0, 1, and 2. We will then solve some new problems related to polynomial theory that require finding the solutions to systems of Diophantine equations. We are required to find rational or integral points on algebraic curves to garner the solutions to these systems.
Labor Turnover, Wage Structures, and Moral Hazard: The Inefficiency of Competitive Markets
Creators: name: Stiglitz, Joseph E.
name: Arnott, Richard J.
Publisher: name: Columbia University
Year: 1985
Subjects: Economics

description: A multiperiod, general equilibrium model of the labor market is developed in which risk-averse workers are faced with job-related uncertainty and labor turnover is costly. If a worker is unlucky and suffers a bad job match, he quits and joins another firm, hoping that he will like its work environment more. Because the quality of a job match is unobservable, workers cannot insure against the risk of a bad match. The firm provides implicit insurance against job dissatisfaction, typically by paying workers more than their net marginal products in their early years with the firm and less subsequently. Since the probabilities of the insured-against events (the quit rates over time) are affected by the amount of such insurance provided, this implicit insurance is characterized by moral hazard. Individuals quit when in the absence of insurance they would not. The equilibrium contract balances out efficiency in risk bearing with efficiency in turnover incentives. We show that the equilibrium contract is not (constrained) efficient and indicate why. This paper is concerned with the relationship between wage structure and labor turnover. We are concerned, in particular, with the question who effectively pays for specific training and hiring costs. Becket (1962) provided the classic solution for this problem when individuals and firms are risk neutral. Individuals pay the costs when they are hired, but the wages (which equal the posttraining value of their marginal product) that they are subsequently paid must be sufficiently high for the individuals to recoup these expenditures (with interest). Under these circumstances, individuals have the correct incentives for moving; when they move, their specific human capital is, in effect, destroyed; hence they should only move when the increase in their productivity, or the increment in the utility they receive from the nonpecuniary aspects of the job, at least compensates for this; when individuals have paid the training.
The effect of incongruent delay on perception of object stiffness via guided haptics
Creators: name: Ferrari, Simon William
Publisher: name: University of Calgary
Year: 2012

description: Bibliography: p. 98-101
description: Some pages are in colour.
description: As the world becomes networked new methods of communication between people will become available. Virtual reality technology is already used in the training of various jobs because of the safety and additional tools provided over traditional training methods. Networking remote users to allow them to interact within a virtual environment creates new and improved methods of training and communication. This Master's thesis examined how such a networked virtual environment could handle soft deformable objects, like those found in a surgical training simulation. Soft objects provide a new challenge for interaction within a networked haptic (touch) environment; their changing geometry required bandwidth management and selecting an appropriate interaction scheme. Two empirical studies were conducted to examine the effect on perception of incongruent delay between visual and haptic feedback, which could result from bandwidth management. These results and the developed platform will be used in future research for remote haptic training systems.
Probing New Physics via the $B^0_s\to μ^+μ^-$ Effective Lifetime
Creators: name: De Bruyn, Kristof
name: Fleischer, Robert
name: Knegjens, Robert
name: Koppenburg, Patrick
name: Merk, Marcel
name: Pellegrino, Antonio
name: Tuning, Niels
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We have recently seen new upper bounds for $B^0_s\to μ^+μ^-$, a key decay to search for physics beyond the Standard Model. Furthermore a non-vanishing decay width difference $ΔΓ_s$ of the $B_s$ system has been measured. We show that $ΔΓ_s$ affects the extraction of the $B^0_s\to μ^+μ^-$ branching ratio and the resulting constraints on the New Physics parameter space, and give formulae for including this effect. Moreover, we point out that $ΔΓ_s$ provides a new observable, the effective $B^0_s\to μ^+μ^-$ lifetime $τ_{μ^+μ^-}$, which offers a theoretically clean probe for New Physics searches that is complementary to the branching ratio. Should the $B^0_s\to μ^+μ^-$ branching ratio agree with the Standard Model, the measurement of $τ_{μ^+μ^-}$, which appears feasible at upgrades of the LHC experiments, may still reveal large New Physics effects.
description: 6 pages, 2 figures, title matches published version in Physical Review Letters
Improved efficiency of marine em subsurface modeling using the total-field scattered-field fdtd formulation
Creators: name: Dukeshire, Andrea
Publisher: name: University of Calgary
Year: 2012

description: Bibliography: p. 94-98
description: To efficiently model the effect of the airwave in the controlled-source electromagnet-1cs (CSEM) method has historically been a problem of major interest. The methods proposed in this thesis provide a new method of simulating CSEM interactions in the finite-difference time-domain (FDTD) by using the total-field scattered-field (TFSF) for­mulation. TFSF provides an inherent separation of the total and scattered fields, which allows the proposed method to decompose the CSEM domain into separate simulation runs. By simulating the problem in stages, the process of extracting the response of the scatterer is streamlined. If the increased efficiency options within the proposed method are utilized, the effi­ciency of single forward simulations can be improved. This method shows potential for computational cost savings, especially in typical CSEM data analysis and reconstruction situations where numerous iterations of various scatterers are required.
Information and Economic Analysis: A Perspective
Creators: name: Stiglitz, Joseph E.
Publisher: name: Columbia University
Year: 1985
Subjects: Economics

description: The article focuses on information and economic analysis. Traditional economic analysis was predicated on three maxims: nature abhorred discontinuities, nature abhorred non-convexities and the Law of Supply and Demand. During the 1970s, a large number of models examining economic behavior in the presence of imperfect information have been constructed. Adam Smith's invisible hand has attracted more attention than any other. It has the notion that a competitive equilibrium would attain a Pareto efficient allocation.
Diode bypassed transistor-voltage-source units and harmonic control in multilevel inverters
Creators: name: Al-Judi, Arif
Publisher: name: University of Calgary
Year: 2012

description: Bibliography: p. 115-122
description: Multilevel inverters make use of a large number of switching components to synthesize a staircase output voltage waveform that resembles a sine wave. A present research trend is to reduce switch count while maintaining or lowering output voltage harmonic distortion. In this disse11ation a switching unit is proposed that can bypass a voltage source in series with a transistor using a diode instead of the conventional approach that uses a bypass transistor. This diode bypass unit is employed with the de­link and the neutral point inverters. The major part of this dissertation focuses on harmonic optimization in multilevel inverters. The objective is to find the switching angle values that can eliminate specific low order harmonics in the output voltage waveform while keeping control of the value of the fundamental voltage. The conventional approach is to equate the undesired harmonic voltages to zero and solve the resulting equations using Newton's method. The approach used in this dissertation employs the harmonic power quantities to eliminate the undesired harmonics. The powers of these harmonics are added together to constitute a cost function that can be minimized using a gradient search technique. The proposed algorithm uses the sign of the gradient instead of the exact value of the gradient, thus reducing analytical complexity of the approach. The gradient sign approach is shown to have very close results in the search path and outcomes of the optimization process compared with the exact gradient approach. Two more cost functions are also considered based on the least squares approach. Weighted versions of the present and past total power and the squared total power of the undesired harmonics are taken as two cost functions and minimized using the sign of the gradient. The algorithms proposed can take into account the cases of unequal voltage sources and a wide range of the modulation index. Simulation and experimental results support the proposed theory.
A gas generation, migration and extraction model for landfills
Creators: name: Wang, Chien-Kai Kenneth
Publisher: name: University of Calgary
Year: 2012

description: Bibliography: p. 103-113
description: A page is in colour.
description: Includes copy of copyright permission. Original copy with original Partial Copyright Licence.
description: A numerical model is developed to simulate the generation, movement, extraction, and surface emission of landfill gas as well as possible air intrusion in a sanitary landfill equipped with an active or a passive gas collection system. The model was validated using results and data published in literature and has been used to study how the efficiency of a gas collection system may be impacted by a number of factors including vacuum pressure, well screen length, intermediate and final covers' thickness and permeability, number of gas collection wells and direction of well placement. The results suggest that a higher gas collection rate can be achieved by using a vertically placed well with a stronger vacuum pressure, a longer well screen, and a thicker and less permeable final cover, while undesirable air intrusion may be minimized by installing a larger number of wells.
Learning with virtual patients
Creators: name: Tworek, Janet Kimberley
Publisher: name: University of Calgary
Year: 2012

description: Bibliography: p. 239-250
description: Includes copy of ethics approvals. Original copies with original Partial Copyright Licence.
description: Positivist research on virtual patients (VPs) focuses on knowledge-based outcomes and self-reported satisfaction ratings, which presents a narrow perspective of learning with technology. Such approaches belie learning as a complex, socio-cultural process, and overlook that innovations in education are fundamentally long-term undertakings requiring iterative feedback and design. The doctoral research asked: "What learning occurs with VPs in clerkship?", and considered this question using three lenses: activity theory, design-based research, and learning analytics. Students in the final year of clerkship (n= l 80) used VPs over a six-month period. Data was collected from multiple sources (semi-structured interview, semi-structured focus group, video, screen capture, document analysis, log file analysis, and artefact analysis). Analysis engaged design-based research to capture the iterative re-design of VPs based on student feedback. Activity theory and design-based research were used to capture the complex socio-cultural dynamics of learning from and with VPs. VP node data usage was analyzed using learning analytics. Data were analyzed separately then triangulated to build an understanding of the learning that takes place with VPs in clerkship. VP and course design concerns initially prevent students from directly engaging in learning. The findings are connected in a learning ecology comprising VP and course design, social learning, and the hierarchal organization of VPs in relationship to course and MD program. Navigation, aesthetics, feedback, challenge and social learning are discussed and related to VP, course and program layers. Concerns arose in relation to competitiveness and professionalism with VP use. Learning analytics require further definition in order to be meaningful for describing learning. The development of problem solving skills and enculturation to professional practice from clinical experiences greatly influences learning with and from VPs. The complex, intertwined reality of VPs, learners, courses, and curriculum is a rich tapestry of learning that challenges existing research while extending directions for future design and development.
An investigation on a photochemical remediation of polychlorinated biphenyls in transformer oil
Creators: name: Kong, Jiansong
Publisher: name: University of Calgary
Year: 2012

description: Bibliography: p. 103-111
description: Includes copy of copyright permissions. Original copies with original Partial Copyright Licence.
description: The focus of this research is to develop photo based remediation methods for polychlorinated biphenyls (PCBs) in transformer oil (TO), and to investigate the extraction of PCBs from TO. If the PCBs are successfully extracted, the cleaned oil can be recycled and PCBs in the extractant can be photochemically degraded. The study on direct dechlorination of PCB138 in TO using 254nm ultraviolet (UV) light, indicated >99% dechlorination within 1 h. Photosensitized dechlorination of PCB 13 8 in TO using visible light in the presence of methylene blue (photosensitizer) and triethylamine (sacrificial electron donor), indicated 94% reduction within 30 min. The second part of this thesis deals with liquid-liquid extraction, used to separate PCBs from TO. Three extraction solvents were used: dimethyl sulfoxide (DMSO), sulfolane and acetonitrile. The results show that DMSO was the preferred solvent for extraction of PCBs from TO. After extraction, PCBs in DMSO could be complete dechlorinated within 3 min using visible light in presence of methylene blue (MB) as a photosensitizer, sodium borohydride as a reducing agent and under dearation condition. After dechlorination process, the cleaned DMSO can be recycled or reused.
Pareto Inferior Trade
Creators: name: Stiglitz, Joseph E.
name: Newbery, David M. G.
Publisher: name: Columbia University
Year: 1984
Subjects: Economics

description: The paper shows that between two competitive but risky economies with no insurance markets, free trade may be Pareto inferior to no trade. The model is simple enough to show clearly the role prices play in transferring and sharing risk when there is an incomplete set of markets, but rich enough to exhibit the resulting inefficiencies dramatically.
title: Assessing irrigation-induced selenium and iron in the stream-aquifer system of the Lower Arkansas River Valley, Colorado
title: Hydrology days 2004
titleType: AlternativeTitle
title: AGU hydrology days 2004
titleType: AlternativeTitle
Creators: name: Donnelly, Joseph P.
name: Gates, Timothy K.
name: Colorado State University, Publisher
Publisher: name: Mountain Scholar
Year: 2004

description: 24th annual AGU hydrology days was held at Colorado State University on March 10-12, 2004.
description: Includes bibliographical references.
description: Water quality data on Se and Fe have been collected since April 2003 in a study of the lower Arkansas River valley, Colorado. Data were obtained from 19 surface water locations and from 50 ground water monitoring wells using low-flow sampling techniques. GIS mapping and statistical analysis were used to characterize the occurrence, severity, and spatial and temporal distribution of Se and Fe in the study area. Results indicate dissolved Se concentrations ranging from about 0 to 3560 μg/L with a median of about 16 μg/L in the ground water, including two significant hot spots. River concentrations range from 5.4 to 23 μg/L, often exceeding stream standards. Dissolved Fe concentrations in the wells range from about 0 to 1560 μg/L, however only about twenty percent of the samples were above the analytical detection limit. Relationships were explored between Se concentrations and more-easily monitored indicators such as electrical conductivity and sulfate concentration. Statistically significant non-linear relationships exist between Se and these constituents and will be tested for predictive capability.
Hard MeV-GeV spectra of blazars
Creators: name: Katarzynski, Krzysztof
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Very high energy (VHE) gamma-ray emission from a distant source (z >~0.2) can be efficiently absorbed my means of the electron-positron pair creation process. Analyses of the unabsorbed spectra imply that the intrinsic TeV emission of some blazars is hard, with spectral indices 0.5 < alpha < 1. The absorption depends on the level of extragalactic background light (EBL) that is difficult to measure directly. This implies that it is difficult to estimate the slope of the intrinsic TeV emission. To test our blazar emission scenario that is capable to reproducing the hard spectra, we therefore used the observations made by the Fermi Gamma-ray Space Telescope in the unabsorbed MeV-GeV energy range. We assume that the X-ray and gamma-ray emission of TeV blazars is produced in a compact region of a jet uniformly filled by particles of relatively high energy (g >~ 10^3, E=g m_e c^2). In other words, we assume a low energy cut-off in the particle energy distribution. The emission produced by the particles with this energy spectrum can explain hard intrinsic spectra in the energy range from MeV up to TeV. We demonstrate how to estimate the basic physical parameters of a source in this case and how to explain the observed spectra by a precise simulation of the particle energy evolution. To test our estimation methods, we use the observations of two blazars with exceptionally hard spectral indices (alpha
description: 9 pages, 6 figures, accepted for publication in A&A
title: Mental health and wellness education for MRT: Workplace implications and attitudes affecting practice
Creators: name: Brydon, Megan
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Not applicable
subject: Observational
subject: Retrospective
subject: Workforce
subject: Occupational / Environmental hazards
subject: Health policy and practice
subject: Education
subject: Conventional radiography
subject: Radiographers
subject: Professional issues
subject: Management
subject: Professional Issues

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Provide an overview of Mental Health and Wellness of Medical Radiation Technologists (MRTs) Review Emotional Exhaustion, Compassion Fatigue, and Vicarious Trauma Showcase MRT Conference dedicated to Mental Health and Wellness Explore implications...
Innovative Repair Methods for Corrosion-Damaged Steel Bridges
Creators: name: Tarasova, Anna
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 400510
subject: Structural engineering

description: Girder ends of steel bridges can be corrosion damaged due to deicing salts, water, and other contaminants leaking from deck expansion joints. When the corrosion becomes significant, it can decrease the sectional properties of end steel girders and eventually reduce structural resistance against bearing and shear. Conventional methods that are typically used to repair corrosion-damaged girders require a substantial amount of time and resources to complete and often cause public inconvenience due to traffic lane closure. Therefore, there is a need for practical, rapid, and robust repair methods that can be implemented by maintenance personnel of a local Department of Transportation (DOT).In this study, five innovative repair methods for corroded steel girders were evaluated through a selection process called the House of Quality Matrix, a commonly used tool in the consumer product industry. After completing the evaluation and additional numerical simulations, the "Sandwich Panel" repair method was selected for further investigation. The main concept of the proposed "Sandwich Panel" repair method is the encasement of the corroded region with a filler material reinforced by threaded rods. Two thin steel plates installed on both girder sides serve as stay-in-place formwork, expediting the installation process. This repair method eliminates labor-intensive steps of jacking, welding, and formwork disassembly, making it more cost-effective and less time-consuming.The structural performance of the method was evaluated experimentally by conducting seven large-scale tests. Various test parameters were considered in the tests, including i) threaded rod layout, ii) filler material, and iii) support condition. The test specimens were corrosion-damaged steel girders from decommissioned highway bridges in Indiana. The experimental results indicate that the method is effective enough to recover the girder's original design strength. The experimental evaluation was followed by a numerical parametric study using finite element models benchmarked using the experimental results. Detailed design guidelines and recommendations were developed based on the experimental and numerical results.
title: Development of Artificial Intelligence (AI) onboard imaging system Part1 -Verification of automatic detection accuracy in chest PA images-
Creators: name: INAGAKI, AKIRA
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Performed at one institution
subject: Not applicable
subject: Retrospective
subject: Image verification
subject: Safety
subject: Computer Applications-Detection, diagnosis
subject: Digital radiography
subject: CAD
subject: Computer applications
subject: Artificial Intelligence
subject: Information Technology

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: An image checking system using Deep learning was developed and its effectiveness was evaluated. ・The Deep learning model was trained to identify the shooting direction. ・The precision of the learning model was evaluated and a factor analysis was...
Ideologies of English language teaching and learning in Saudi Arabia
Creators: name: Alkhalil, Samar Fahad A.
Publisher: name: Macquarie University
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Globally, the English language is widely perceived as a fundamental ingredient in personal success and national economic prosperity. Saudi Arabia, a country whose economy is currently diversifying away from oil, is no exception. The trend towards English language learning (ELL) worldwide has led English language teaching (ELT) services to promote their products with marketing discourses that naturalise specific language ideologies about the English language. While the language ideologies inherent in the marketization of ELL have been explored elsewhere, they have not yet received sufficient attention in the context of Saudi Arabia. The present study aims to fill this gap in the literature.This study investigates ideologies of ELT and ELL in online advertisements of private ELT institutes in Saudi Arabia. It also examines how these ideologies circulate among Saudi people through online commentaries. Critical discourse analysis and multimodal discourse analysis are used to analyse a corpus of 132 advertisements produced by ELT institutes and 54 audience comments on social media. The study finds, first, that English is conceptualised as a global language with benefits for employment, education, travel and achieving the Saudi Vision 2030. Second, ELL is represented as fun, empowering learners and as a gateway to pass English proficiency tests. Third, the ads reproduce native English speaker ideologies by presenting English as the language of the USA and of Britain only and by promoting English-only immersion strategies. Fourth, the institutes represent themselves as superior to public schools by advertising different types of ELT courses such as English for communication, English for business and English for beginners. The language ideologies found in the ads are largely mirrored in comments by the public. The most notable difference between ads and social media commentary is with regard to the discursive construction of ideal teachers. While the ads promote the idea that native-English-speaking teachers are best, this is not always true in social media commentary.Overall, the study contributes to sociolinguistic knowledge about English in Saudi Arabia. It uncovers ideological meanings associated with promoting English which may help to increase realisation among ELT providers of their complicity in their manipulation of ELL. The study also provides insight into how these ideologies affect peoples’ understanding of English and ELL. The study has implications for applied linguistics research and language policy and suggests remedial changes that together can help in moving towards the Saudi Vision 2030 and improving the ELT in the country.
Le biblioteche nell'economia della condivisione: i bibliotecari contribuiscono allo sviluppo sostenibile.
Creators: name: Hernandez-Carrion, J.R.
Publisher: name: Zenodo
Year: 2020
Subjects: libraries
biblioteche
sviluppo locale
ambiente
environment
societa locale
sharing economy
economia della condivisione
bibliotecari
paradigma
sviluppo sostenibile
sustainability

description: Abbiamo di fronte a noi, con la crescita della “Sharing Economy” (anche denominata economia della condivisione), un “nuovo paradigma economico”: una visione e un approccio nuovi per comprendere l’economia e il mondo.
 Per i bibliotecari, la sharing economy investe proprio tutte le ragioni e i compiti della loro profes-sione, con particolare riguardo alle caratteristiche di mutualità, di rafforzamento del tessuto relazio-nale della comunità, di aumento delle possibilità di accesso alla educazione e alla cultura. Nel conte-sto attuale bisogna sottolineare questo approccio economico per guadagnare efficienza nel consumo dei beni e per una migliore gestione dei beni comuni, che s’intreccia con quello oggi tanto importante della tutela dell’ambiente. La biblioteca può svolgere un ruolo le-ader e organizzare la condivisione sotto varie forme, anche tramite banche del tempo per esempio, la biblioteca può articolare piattaforme digitali o analogiche precisamente perché sta più vicina alla società e alle necessità che davvero contano oggi.
description: European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement n°734855.
Dark Matter Searches: The Nightmare Scenario
Creators: name: Bertone, Gianfranco
name: Cumberbatch, Daniel
name: de Austri, Roberto Ruiz
name: Trotta, Roberto
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The unfortunate case where the Large Hadron Collider (LHC) fails to discover physics Beyond the Standard Model (BSM) is sometimes referred to as the "Nightmare scenario" of particle physics. We study the consequences of this hypothetical scenario for Dark Matter (DM), in the framework of the constrained Minimal Supersymmetric Standard Model (cMSSM). We evaluate the surviving regions of the cMSSM parameter space after null searches at the LHC, using several different LHC configurations, and study the consequences for DM searches with ton-scale direct detectors and the IceCube neutrino telescope. We demonstrate that ton-scale direct detection experiments will be able to conclusively probe the cMSSM parameter space that would survive null searches at the LHC with 100fb$^{-1}$ of integrated luminosity at 14TeV. We also demonstrate that IceCube (80 strings plus DeepCore) will be able to probe as much as 17% of the currently favoured parameter space after 5 years of observation.
description: V2: 24 pages, 6 figures, 4 tables. Replaced to match version published in JCAP. Minor revisions made to address referee's comments
title: PI-RADS 5 prostate lesions: a pictorial presentation of atypical pathology
Creators: name: Law, Yan Mee
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Genitourinary
subject: Genital / Reproductive system male
subject: Oncology
subject: Pelvis
subject: MR
subject: MR-Diffusion/Perfusion
subject: MR-Functional imaging
subject: Diagnostic procedure
subject: Abscess
subject: Cancer
subject: Retrospective
subject: Observational
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: This educational exhibit showcases the imaging and clinical features of lesions identified on multiparametric magnetic resonance imaging (mpMRI) as PI-RADS (Prostate Imaging Reporting and Data Systems) category 5 lesions but were found to have...
Testing the cosmic distance duality with X-ray gas mass fraction and supernovae data
Creators: name: Goncalves, R. S.
name: Holanda, R. F. L.
name: Alcaniz, J. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we discuss a new cosmological model-independent test for the cosmic distance duality relation (CDDR), $η= D_{L}(L)(1+z)^{-2}/D_{A}(z)=1$, where $D_{A}(z)$ and $D_{L}(z)$ are the angular and luminosity distances, respectively. Using the general expression for X-ray gas mass fraction ($f_{gas}$) of galaxy clusters, $f_{gas} \propto D_L{D_A}^{1/2}$, we show that $f_{gas}$ observations jointly with type Ia supernovae (SNe Ia) data furnish a validity test for the CDDR. To perform our analysis we use 38 $f_{gas}$ measurements recently studied by two groups considering different assumptions to describe the clusters (La Roque {\it{et al.}} 2006 and Ettori {\it{et al.}} 2009) and two subsamples of SNe Ia distance luminosity extracted from the Union2 compilation. In our test we consider the $η$ parameter as a function of the redshift parameterized by two different functional forms. It is found that the La Roque {\it{et al.}} (2006) sample is in perfect agreement with the duality relation ($η= 1$) whereas the Ettori {\it{et al.}} (2009) sample presents a significant conflict.
description: 5 pages, 2 figures, 1 table, Letter to MNRAS (in press)
Prizes and Incentives: Towards a General Theory of Compensation and Competition
Creators: name: Stiglitz, Joseph E.
name: Nalebuff, Barry J.
Publisher: name: Columbia University
Year: 1983
Subjects: Economics

description: This article analyzes the role of competitive compensation schemes (in which pay depends on relative performance) in economies with imperfect information. These compensation schemes have desirable risk, incentive, and flexibility properties; they provide for an automatic adjustment of rewards and incentives in response to common changes in the environment. When environmental uncertainty is large, such schemes are shown to be preferable to individualistic reward structures; in the limit, as the number of contestants becomes large, expected utility may approach the first-best (perfect information) level. We study the design of contests, including the optimal use of prizes versus punishments and absolute versus relative performance standards. The analysis can also be viewed as a contribution to the multi-agent, single-principal problem.
VLBI Observations of the Nearby Type IIb Supernova 2011dh
Creators: name: Bietenholz, M. F.
name: Brunthaler, A.
name: Soderberg, A. M.
name: Krauss, M.
name: Bartel, N.
name: Chomiuk, L.
name: Rupen, M. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on phase-referenced VLBI radio observations of the Type IIb supernova 2011dh, at times t = 83 days and 179 days after the explosion and at frequencies, respectively, of 22.2 and 8.4 GHz. We detected SN 2011dh at both epochs. At the first epoch only an upper limit on SN 2011dh's angular size was obtained, but at the second epoch, we determine the angular radius SN 2011dh's radio emission to be 0.25 +- 0.08 mas by fitting a spherical shell model directly to the visibility measurements. At a distance of 8.4 Mpc this angular radius corresponds to a time-averaged (since t=0) expansion velocity of the forward shock of 21000 +- 7000 km/s. Our measured values of the radius of the emission region are in excellent agreement with those derived from fitting synchrotron self-absorbed models to the radio spectral energy distribution, providing strong confirmation for the latter method of estimating the radius. We find that SN 2011dh's radius evolves in a power-law fashion, with R proportional to t^(0.92 +- 0.10).
description: 8 pages; accepted to Astrophysical Journal
title: Do El Niño events modulate the statistical characteristics of Turkish streamflow?
title: Hydrology days 2007
titleType: AlternativeTitle
title: AGU hydrology days 2007
titleType: AlternativeTitle
Creators: name: Kahya, Ercan
name: Martı, Ali İhsan
name: Colorado State University, Publisher
Publisher: name: Mountain Scholar
Year: 2007

description: 2007 annual AGU hydrology days was held at Colorado State University on March 19 - March 21, 2007.
description: Includes bibliographical references.
description: The objective of this study is to investigate whether or not the basic statistical characteristics of a streamflow time series that is assumed to be affected by the warm phases of the Southern Oscillation (El Niño events). In order to achieve this intended goal, we considered a hypothetical series, so-called generated series, which can be obtained from the historical series at hand by first assuming non-occurrence of El Niño events in the past. The historical monthly precipitation data during the El Niño years were simulated by the Radial Based Artificial Neural Network (RBANN) method. The differences in the basic statistical characteristics between the generated and original historical series were tested by various statistical hypothesis testing methods for four different cases. Consequently if significant differences were determined between the two series in terms of variance, mean and autocorrelation parameters, then it can be inferred that the El Niño events modulate the major statistical characteristics of streamflow series. This type of result (related to a question of "how") may be conceived as the subsequent phase of the previously documented results concerning the determination of El Nino signal (related to a question of "is there"). The outcomes of this study were in agreement with the previous studies and may be taken into consideration by the hydrologist for the long-term irrigation, hydropower and environmental planning.
title: Ischemic Stroke masks in children with malignancies.
Creators: name: Seliverstova, Evgenia
Publisher: name: European Congress of Radiology
Year: 2020
Subjects: subject: Paediatric
subject: CNS
subject: Emergency
subject: Neuroradiology brain
subject: CT
subject: MR
subject: MR-Diffusion/Perfusion
subject: Chemotherapy
subject: Complications
subject: Imaging sequences
subject: Acute
subject: Ischaemia / Infarction
subject: Retrospective
subject: Case-control study
subject: Performed at one institution

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To describe MRI neuroimaging findings of different conditions that might be cause of stroke-like syndromes in children with cancer. To list most common disorders that mimic stroke and are often misdiagnosed as stroke. Describe MRI key imaging...
Encountering storied worlds
Creators: name: Jones, Kathryn
Publisher: name: University of Calgary
Year: 2012

description: Bibliography: p. 119-128
description: A few pages are in colour.
description: This thesis explores the place of stories in high school English Language Arts classrooms, in Alberta, in 2012. Amidst discourses of individual program planning, personalization and standardized assessment, I reflect on encountering traumatic texts with students. In the discussion, I queer(y) an amended Alberta Human Rights Act that provides parents with the right to "opt" their children out of classroom discussions of "sexuality, sexual orientation and religion". Through an interweaving of hermeneutic, narrative and arts-based approaches I imagine a story of school that includes all students, opens up conversations and works towards the possibility of a collective life on this planet. In other words, I imagine a story of public schooling that might be "other"wise. My work as a teacher, and this reflection, is ongoing.
Post modern metaphors of youth in Calgary
Creators: name: Hartley, William J.
Publisher: name: University of Calgary
Year: 2012

description: Bibliography: p. 117-123
description: Some pages are in colour.
description: Missing all apendices A-G.
description: This study takes up the notion of metaphors of postmodern identity and explores these with respect to the life experiences of fifteen-year-olds in two different high schools in Calgary, Alberta, Canada. Situated within the first year of a three-year SSHRC-funded study designed to examine citizenship and identity of youth, the analysis takes up some of the data collected from the participants; namely, socio-demographic information; photos of places where the participants felt included/excluded, safe/at risk, collected in what are termed 'photoscapes'; urban maps of their preferred locations in each of four urban quadrants, downtown, and beyond the city. Interviews throughout the data collection process provided clarifications and reflexivity between participants and researchers. My analysis reveals that the five metaphors of postmodern identity, as proposed by Baumann (1996), i.e., Tourist, Vagabond, Pilgrim, Player, and Flaneur, are taken up by some youth participating in this research project. Moreover, additional metaphors of identity were taken up by some other participants, those of Citizen and Fashionista, as well as combined metaphors. For educators and researchers, this analysis provides starting points for further explorations and understandings of metaphoric identity orientations to society within an economic market approach to knowledge. For adolescents and youth, the research process provided a vehicle for further exploration of self and other, and for their quest of a place in the world. Furthermore, much discussion ensued with each other, the research team and contact teachers, all nourishing their youthful quests. The differentiation of youth in terms of their metaphoric identifications has been attempted by many authors, each from their own perspectives, just as my analysis is influenced by my own subjectivities as experienced teacher. The originality of the participants illustrates the need for qualitative studies to bring to bear both data and analyses, so as to further explore philosophical proposals and observations.