Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 522 for “"QA"”.
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Finding similar questions in large-scale community QA forums
Question answering forums are rapidly growing in size with no automated ability to refer to and reuse existing answers. In this paper, we develop a methodology for finding semantically related questions. The task is difficult since 1) key pieces of information are often buried in extraneous details …
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An Evaluation of The Consistency of Imrt Patient-Specific Qa Techniques
… through a measurement-based quality assurance (QA) procedure, known as patient specific IMRT QA. Many methods of measurement and analysis have evolved for this QA. There is not a standard among clinical institutions, and many devices and action levels are used. Since the acceptance criteria …
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Consistency of Advanced Radiation Therapy QA Methods and Global Auditing Systems
… of Advanced Radiation Therapy QA Methods and Global Auditing Systems</strong></p> <p><strong>Fre’Etta M.D. Brooks, B.S.</strong></p> <p><strong>Advisory Professor: Stephen F. Kry, Ph.D.</strong></p> <p><strong>Abstract</strong></p> <p>Auditing systems provide a means to verify …
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DART-RAG: Dynamic Agentic Replanning for Trustworthy Retrieval-Augmented Generation in Scientific QA
… για αξιόπιστες επιστημονικές Ερωταποκρίσεις (QA) ανοιχτού πεδίου. Λειτουργώντας πάνω σε μια συλλογή περισσότερων από 3 εκατομμυρίων εργασιών πλή- ρους κειμένου προερχόμενων από τα σώματα κειμένων του Semantic Scholar, το DART- RAG διακρίνεται μέσω ενός μηχανισμού προσαρμοστικού επανασχεδιασμού …
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NDT application in Transport Asset Management. QA/QC performance specifications in pavement construction and maintenance
… infrastrutture di trasporto e delle specifiche QA/QC dei capitolati basati sulle prestazioni al fine di garantire la conservazione delle risorse ambientali, sociali ed economiche. Questo studio si compone di due parti di attività di ricerca: test sul campo e simulazioni numeriche. La prima …
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Comprehensive Calculation-Based Imrt Qa Using R&V Data, Treatment Records, and A Second Treatment Planning System
… </strong>Traditional patient-specific IMRT QA measurements are labor intensive and consume machine time. Calculation-based IMRT QA methods typically are not comprehensive. We have developed a comprehensive calculation-based IMRT QA method to detect uncertainties introduced by the initial …
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The Binding Pockets of QA and QB in the Photosynthetic Reaction Center of Rba. sphaeroides Probed by Pulsed EPR
… the final two are identical ubiquinones (QA and QB). Both ubiquinones can be stabilized in their reduced (semiquinone) state allowing for their binding pockets to be studied with EPR (electron paramagnetic resonance) spectroscopy. Using the pulsed EPR technique, ESEEM (electron spin echo …
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Analysis of QA/QC Protocols and Value of Data to the Development of Reference Criteria in the Georgia Ecoregions Project
<p>The concept of Measurements Quality Objectives (MQOs), in bioassessment programs is a useful tool in evaluating the consistency of data and limiting variability and potential sources of measurement error. Typical evaluations of data repeatability and/or data quality center on the use of a series …
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Structure and function studies of polar mutants of the QA pocket in the bacterial photosynthetic reaction center of Rhodobacter sphaeroides
… two electron acceptors, the primary quinone (QA) that then reduce the secondary quinone (QB). In Rb. sphaeroides these quinones are chemically identical ubiquinones and the protein must tune the midpoint potential (Em) of each quinone to make electron transfer from QA to QB favorable. Using …
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Studies of Non-Classical Antigen Presentation Molecules: Functional Analysis of Mouse Qa-1 and Characterization of the Porcine CD1 Gene Family
… Two MHC class I-b molecules were studied, mouse Qa-1 and porcine CD1. First, Qa-1 expression was examined in pancreatic $\beta$-cells. The demonstration of interferon-$\gamma$-regulated Qa-1$\rm\sp{b}$ expression in $\beta$-cells along with the identification of a putative Qa-1$\rm\sp{b}$ peptide …
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The Role of Qa-2, the Functional Homolog of HLA-G, in a Mouse Model of Behcet's Disease Induced by HSV Inoculation
… factors for BD. In this study, reduced levels of Qa-2, a murine nonclassical class I MHC molecule and a possible functional homolog of HLA-G, was associated with various BD-like symptoms in mice, and siRNA (small interfering RNA) treatment was used to inhibit Qa-2 RNA expression in order to detect …
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Interpretable Multi-hop Question Answering
… of Artificial Intelligence. Question Answering (QA), an advanced form of information retrieval in the field of Natural Language Processing, aims to build a system to answer natural language questions posed by humans. Since QA tasks can be used to quantify the understanding and reasoning ability …
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An optimality-theoretic analysis of syllable structure in Qassimi Arabic
<p>This thesis examines syllable structure in Qassimi Arabic (QA), a Najdi dialect spoken in Al-Qassim region in Saudi Arabia. Syllable-related phenomena in QA have not been fully addressed and understood because QA has not received attention in the available literature on syllable structure within …
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The Logic of the Thai Higher Education Sector on Quality Assessment Policy
… sector, the global quest for Quality Assessment (QA hereafter) has raised attention to quality to a new level. Van Vught and Westerheijden (1994) argue that the common charateristics of QA policy include: meta-level organization to conduct external evaluation, self-evaluation, peer review (site …
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Assessment of Uncertainty In Planning and Dose Delivery of Proton Therapy In An Iroc- Houston Qa Phantom Due to Variable Ct Technique and Proton Energy
… treatment planning for the IROC-H proton phantom QA program due to variations in CT technique and proton energy. It was hypothesized that variations in CT technique and proton energy will alter the delivered dose distributions of typical proton treatments by reducing the percent of passing pixels …
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Re-Visioning Quality Assurance in Higher Education.
… and HE. This study focused on Quality Assurance [QA] as a key policy concern and regulatory mechanism of HE at national, European and global levels (L. Harvey, 2005). Drawing on poststructuralist and critical theories I located QA as a mechanism of governing HE and neoliberalism as a key …
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Loss and Reward Functions for Generative Question Answering Systems
… Addresses the challenge of training generative QA models with limited supervised data. We demonstrate how knowledge from Answer Sentence Selection (AS2) models can be transferred to generative QA (GenQA) models by leveraging top-ranked candidates as generation targets and lower-ranked candidates …
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Neuroprotective effects of overexpression of the inhibitor of apoptosis proteins in the quinolinic acid model of excitotoxic injury.
… quinolinic acid (2,3 pyridine decarboxylate; QA) directly into the striatum. The first aim of this study was to examine whether intrastriatal QA injections result in neurons dying by apoptosis as assessed by caspase activation. Animals were intrastriatally injected with QA and striatal brain …
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Automated Quality Assurance for Magnetic Resonance Imaging with Extensions to Diffusion Tensor Imaging
… the ACR procedure for daily quality assurance (QA) testing. The ACR accreditation program uses information obtained from clinical and phantom images to assess overall image quality of a scanner. For the phantom assessment, a human observer performs manual tests on T1 and T2-weighted volumes of …
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Transformer-based models for answer extraction in text-based question/answering
… models in the task of question-answering (QA). Furthermore, while these models can capture significant semantic and syntactic knowledge of a natural language, their potential for enhancing performance, in QA, through the incorporation of linguistic features remains unexplored. In this …
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