Дисертації з теми "Media Quality Assessment"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-16 дисертацій для дослідження на тему "Media Quality Assessment".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Grönborg, Felix, and Otto Ortega. "Evaluation of Methods for Image Analysis with the Purpose of Imitating Subjective Quality Assessment." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-174849.
Повний текст джерелаExamensarbetet är utfört vid Institutionen för teknik och naturvetenskap (ITN) vid Tekniska högskolan, Linköpings universitet
Juarez, James Jay. "Development of a Media Driven Online Assessment System: Improving Quality, Frequency, and Deployment of Grades and Feedback in Higher Education." NSUWorks, 2013. http://nsuworks.nova.edu/gscis_etd/189.
Повний текст джерелаAsghari, Roodsari Alaleh. "Noninvasive assessment of embryo quality in human in vitro fertilization : metabolomic profiling of embryo culture media with Raman spectroscopy." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/43273.
Повний текст джерелаLing, Suiyi. "Perceptual representations of structural and geometric information in images : bio-inspired and machine learning approaches : application to visual quality assessment of immersive media." Thesis, Nantes, 2018. http://www.theses.fr/2018NANT4061/document.
Повний текст джерелаThis work aims to better evaluate the perceptual quality of image/video that contains structural and geometric related distortions in the context of immersive multimedia. We propose and explore a hierarchical framework of visual perception for image/video. Inspired by representation mechanism of the visual system, low-level (elementary visual features, e.g. edges), mid-level (intermediate visual patterns, e.g. codebook of edges), and higher-level (abstraction of visual input, e.g. category of distorted edges) image/video representations are investigated for quality assessment. The first part of this thesis addresses the low-level structure and texture related representations. A bilateral filter-based model is first introduced to qualify the respective role of structure and texture information in various assessment tasks (utility, quality . . . ). An image quality/video quality measure is proposed to quantify structure deformation spatially and temporally using new elastic metric. The second part explores mid-level structure related representations. A sketch-token based model and a context tree based model are presented in this part for the image and video quality evaluation. The third part explores higher-level structure related representations. Two machine learning approaches are proposed to learn higher-level representation: a convolutional sparse coding based and a generative adversarial network. Along the thesis, experiments an user studies have been conducted on different databases for different applications where special structure related distortions are observed (FTV, multi-view rendering, omni directional imaging . . . )
Latifah, Sitti. "Inventory and quality assessment of tropical rainforests in the Lore Lindu National Park (Sulawesi, Indonesia) /." Göttingen : Cuvillier, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=013215823&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Повний текст джерелаFOTIO, TIOTSOP LOHIC. "Optimizing Perceptual Quality Prediction Models for Multimedia Processing Systems." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2970982.
Повний текст джерелаNabil, mahrous yacoub Sandra. "Evaluation de la qualité de vidéos panoramiques synthétisées." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAM067/document.
Повний текст джерелаHigh quality panoramic videos for immersive VR content are commonly created using a rig with multiple cameras covering a target scene. Unfortunately, this setup introduces both spatial and temporal artifacts due to the difference in optical centers as well as the imperfect synchronization. Traditional image quality metrics cannot be used to assess the quality of such videos, due to their inability to capture geometric distortions. In this thesis, we propose methods for the objective assessment of panoramic videos based on optical flow and visual salience. We validate this metric with a human-centered study that combines human error annotation and eye-tracking.An important challenge in measuring quality for panoramic videos is the lack of ground truth. We have investigated the use of the original videos as a reference for the output panorama. We note that this approach is not directly applicable, because each pixel in the final panorama can have one to N sources corresponding to N input videos with overlapping regions. We show that this problem can be solved by calculating the standard deviation of displacements of all source pixels from the displacement of the panorama as a measure of distortion. This makes it possible to compare the difference in motion between two given frames in the original videos and motion in the final panorama. Salience maps based on human perception are used to weight the distortion map for more accurate filtering.This method was validated with a human-centered study using an empirical experiment. The experiment was designed to investigate whether humans and the evaluation metric detect and measure the same errors, and to explore which errors are more salient to humans when watching a panoramic video.The methods described have been tested and validated and they provide interesting findings regarding human-based perception for quality metrics. They also open the way to new methods for optimizing video stitching guided by those quality metrics
Nagyová, Martina. "Hodnocení výkonnosti podniku Medin, a.s. podle modelu Start Plus." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2016. http://www.nusl.cz/ntk/nusl-241650.
Повний текст джерелаZhao, Xiaoyun. "Road network and GPS tracking with data processing and quality assessment." Licentiate thesis, Högskolan Dalarna, Mikrodataanalys, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:du-17354.
Повний текст джерелаOliveira, Catia Gomes de. "Breve análise da categoria de satisfação na obra de Donabedian." Universidade do Estado do Rio de Janeiro, 1992. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=1940.
Повний текст джерелаAs a researcher in the Department of Planning of the Institute of Social Medicine, State University of Rio de Janeiro, had access to literature on the assessment of quality of health services from the perspective of the user. These studies, paradigmatic in the area are (mostly) guided by a functionalist approach that let us ajar conceptual issues we prioritize. How to incorporate in instrumental elaborate and distinct realities of Brazil without prior theoretical reset, so political? In this study, the privileged object of our reflections is the work of Avedis Donabedian, author ha over twenty years studying and researching Quality Assessment Health Services Using the methodology of discourse analysis approach, in Chapter II, the main ideas with which the author systematizes its Normative Model, emphasizing the understanding of patient satisfaction as one of the measures of assessing the quality of care provided.
López, Roldán Ramón. "Integration of advanced off-line and on-line systems for the monitoring of surface and drinking water quality." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/316579.
Повний текст джерелаUna estrategia óptima para monitorizar la calidad del agua se debe basar en una combinación de diferentes tecnologías en función de las particularidades del sistema a supervisar. La solución final será una combinación de técnicas de laboratorio, equipos en continuo, y métodos estadísticos. En este caso, la investigación se ha basado en el río Llobregat, para monitorizar las aguas naturales o potables después de su paso por la potabilizadora de Sant Joan Despí (Barcelona). La tesis incluye una optimización del método para el análisis en laboratorio de fármacos en aguas superficiales. Se detectaron 23 de los 28 compuestos analizados. Las concentraciones más altas se obtuvieron para los ß-bloqueantes metoprolol y sotalol; el antibiótico ofloxacina; y el regulador lipídico gemfibrozilo. Dentro del grupo de los estrógenos, se identificaron estrona y estrona-3-sulfato . Esta última mostró concentraciones en algunos puntos suficientes para inducir efectos estrogénicos en los organismos acuáticos. Para la evaluación del riesgo para los ecosistemas de las sustancias que se encuentran en el río Llobregat, se han desarrollado una serie de índices. La metodología se basa en la comparación de las concentraciones medias con las concentraciones más altas que no tienen efecto en el medio ambiente. Según los resultados, los metales estudiados (bario, cobre, níquel y zinc) dieron índices superiores a 1 para los organismos acuáticos. En cuanto a los compuestos orgánicos, los índices más significativos son los referidos a los pesticidas terbutilazina, diazinón y MCPA; y a los antibióticos claritromicina y ciprofloxacina. Cuando la relación se establece con el umbral legal, clorpirifos y lindano mostraron índices superiores a 1 en algunos meses. Asimismo, se han desarrollado índices para medir el peligro potencial de estas sustancias en la salud humana. La metodología considera los efectos sistémicos y cancerígenos causados por la ingestión oral de agua basados en los datos de la Organización Mundial de la Salud (OMS) y el Sistema de Información de Evaluación de Riesgos (RAIS). En 5 años, el índice sistémico RAIS desciende de 0,64 a 0,42 para aguas superficiales y de 0,61 a 0,31 para agua potable; el índice cancerígeno es insignificante para el agua de entrada y varía de 4.2x10-05 a 7.4x10-06 para agua potable; el índice sistémico OMS va de 0,41 a 0,16 para aguas superficiales y de 0,61 a 0,31 para agua potable. Todos los índices se encuentran por debajo de los umbrales, a excepción del riesgo cancerígeno en el agua tratada durante 2008 y 2009, donde el índice está ligeramente por encima del umbral. Una de las tecnologías que se explora para obtener información útil para los operadores de agua es la espectrofotometría Ultravioleta-Visible. En la red de agua potable de Barcelona, se utilizó una sonda basada en esta tecnología junto a métodos estadísticos, para obtener un modelo multivariante que sirva para predecir los orígenes del agua. Con el fin de mejorar la capacidad de predicción, se realizó el análisis de la combinación de las huellas espectrales con los parámetros: conductividad, flúor y boro. La información que refleja los parámetros físicos y químicos en el agua puede ser combinada con información toxicológica. Un biosensor automático ha sido probado para medir su respuesta a una serie de contaminantes prioritarios. Se calcularon los valores de EC50 (concentración efectiva que causa una disminución del 50% de la actividad en mg L-1) para nonilfenol (0,03 y 0,06 para 15 y 30 min), triclosán (0,13 y 0,13), terbutilazina (2,88 y 2,74), dimetoato (6,80 y 6,20), diclofenaco (10,26 y 9,82), DBSS (50 y 39), diazinon (193 para 15 min), propanil (1594 para 15 min) y MCPA (2,0 para 15 min). Para los metales pesados, los resultados se obtuvieron con cobre (II) (10,61 y 4,68), níquel (II) (317 y 222), cromo (III) (190 y 123) y hierro (III) (52 para 15 min).
van, Kasteren Anouk. "The Contribution of Eye Tracking to Quality of Experience Assessment of 360-degree video." Thesis, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-39963.
Повний текст джерелаTrpkovski, Aleksandar. "Tourist Interest Mining From Online Hotel Photos." Thesis, 2018. https://vuir.vu.edu.au/37815/.
Повний текст джерелаCaduff, Dirk. "Vorgehensweise für entwicklungsorientierte Assessments am Beispiel von Modellen des Total Quality Managements /." 1997. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=007632563&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
Повний текст джерелаChao, Jung, and 趙嶸. "Metabolomic Assessment of the Protective Effect of Gallic Acid on Metabolic Disease and an Investigation into a Methodology for the Quality Control of Chinese Materia Medica." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/08499695347889808625.
Повний текст джерела國立陽明大學
藥理學研究所
104
The material basis of the pharmacological effects of Chinese Materia medica is poorly understood and an efficient quality control method available for Chinese Materia medica (CMM) is insufficient. These issues have led to various problems including inconsistent quality of product. Therefore, this study focuses on two aspects: firstly an investigation of the protective effects of a common component of pharmaceutical plants on metabolic diseases, and, secondly, the development of a new methodology for the quality control of CMM. Gallic acid (GA), a naturally abundant plant phenolic compound present in vegetables and fruits, has been shown to have potent anti-oxidative and anti-obesity activity. However, the effects of GA on metabolic disease are poorly understood. In the first part of this study, the beneficial effects of GA administration on a nutritional hepatosteatosis model and on a high‐fat diet‐fed, streptozotocin (HFD/STZ) treated diabetes model were investigated using a more “holistic view” approach, namely 1H NMR-based metabolomics. The aim was to confirm the efficacy of gallic acid in this context and to obtain information that might lead to a better understanding of the mode of action of gallic acid. Liver histopathology and serum biochemical examinations indicated that the daily administration of GA protects against hepatic steatosis, obesity, hypercholesterolemia, and insulin resistance among the HFD-induced NAFLD mice and against nonalcoholic steatohepatitis and hyperglycemia among HFD/STZ-induced diabetes mice. The findings show that GA has beneficial effects with respect to both models and that this in part occurs through a reversal of HFD or HFD/STZ caused disturbances to a range of metabolic pathways, including lipid metabolism, glucose metabolism, and gut-microbiota-associated metabolism. The selected metabolites identified during this part of the study are also potentially useful as preventive action biomarkers and, furthermore, could also be used to help our understanding of the effect of GA on mice with metabolic disease. As more people worldwide are beginning to use traditional Chinese medicine (TCM), the quality assurance issue regarding CMM has begun to raise international concerns. In the second part of this study, an exploratory study was conducted to try and develop a new approach to quality control assurance of CMM products. A number of appropriate methods have been developed over the years for the authentication of CMMs. Nevertheless, how to differentiate “good” from “bad” CMM remains a relatively undeveloped field. Unlike Western medicine, TCM has a totally different philosophical system. The traditional usage of CMM products makes it difficult to use Western medicine quality control methods in order to achieve CMM quality control. We used Astragalus radix as a model CMM and propose a new methodology for quality control of CMM products. Initially, a literature review approach was used to determine what criteria are needed to differentiate “good” from “bad” CMM. Additionally, different batches of samples were examined by a panel of experts and these individuals then scored the CMM samples independent of each other in terms of quality. On the basis of the expert scores, the various samples were classified into three classes. When the experts’ scores were examined they were found to be highly reproducible. Secondly, we used a metabolomics approach and biological response assays in order to evaluate the various different batches of Astragalus radix. Correlation analysis was then carried out and this showed it was possible to detect a number of chemical components changes that were reflected in the expert scores; however this was not true for the biological response results. These findings demonstrated that traditional usage is not equal to modern pharmacological effects and imply that when developing a useful platform for CMM evaluation there is a need to consider the traditional usage of CMM products. Another important topic that affects the quality control of CMM products is post-harvest processing, which involves drying; this is believed to have a significant effect on the effectiveness of Uraria crinita (UC) as a CMM. UC is traditionally and widely used for digestion regulation and deworming in Taiwan. However little is known about how post-harvest operations affect chemical composition/bioactivity of UC. We assessed three drying methods (oven-drying/air-drying/sun-drying), as well as oven drying temperature, by exploring the herb’s metabolic profile and biological activity profile. NMR spectra showed that extracts from UC contained various secondary metabolites namely triterpenoids, apigenin, glycosides and salicylic acid, as well as a range of primary metabolites. Multivariate analysis showed a clear separation of the samples into three groups that were consistent with their biological activity assays. These findings can ascribed to the presence of higher amounts of secondary metabolites in the oven-dried samples. The recommended oven-drying method gave good reproducibility when two batches were compared using the same PCA score plot as samples from other groups. Thus metabolomics is a useful tool when evaluating processing methods. An appropriate post-harvest drying method is a good approach to increase the bioactivity and quality of UC, both being required to fulfill Good Agricultural and Collection Practices. Taken as a whole, this study suggests that a metabolomics approach is a useful platform for the functional evaluation of natural products. The targets of GA treatment are lipid metabolism and ketogenesis, glucose metabolism and gut-microbiota metabolism. The current investigation provides further evidence supporting GA as a natural dietary compound that is able to ameliorate NAFLD and other metabolic disorders. The findings also suggest that QC is still a very important key issue that will affect CMM development in the future. An appropriate post-harvesting process and a good QC method are necessary if there are to be improvements in the quality of CMM.
Stefanini, Sara. "Il Patrimonio architettonico delle culture del Maghreb a rischio di scomparsa per perdita di conoscenza ed aggressione ambientale. Valutazione delle vulnerabilità e del rischio sismico della medina di Fes in Marocco." Doctoral thesis, 2020. http://hdl.handle.net/2158/1190289.
Повний текст джерела