Дисертації з теми "2D morphology"
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Hayes, Susan. "Seeing and measuring the 2D face." University of Western Australia. School of Anatomy and Human Biology, 2009. http://theses.library.uwa.edu.au/adt-WU2010.0067.
Повний текст джерелаKozarek, Jessica Lindberg. "Channel Morphology and Riparian Vegetation Influences on Fluvial Aquatic Habitat." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/77172.
Повний текст джерелаPh. D.
Devotta, Ashwin Moris. "Characterization & modeling of chip flow angle & morphology in 2D & 3D turning process." Licentiate thesis, Högskolan Väst, Forskningsmiljön produktionsteknik(PTW), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-8671.
Повний текст джерелаDing, Huaxiong. "Combining 2D facial texture and 3D face morphology for estimating people's soft biometrics and recognizing facial expressions." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEC061/document.
Повний текст джерелаSince soft biometrics traits can provide sufficient evidence to precisely determine the identity of human, there has been increasing attention for face based soft biometrics identification in recent years. Among those face based soft biometrics, gender and ethnicity are both key demographic attributes of human beings and they play a very fundamental and important role in automatic machine based face analysis. Meanwhile, facial expression recognition is another challenge problem in face analysis because of the diversity and hybridity of human expressions among different subjects in different cultures, genders and contexts. This Ph.D thesis work is dedicated to combine 2D facial Texture and 3D face morphology for estimating people’s soft biometrics: gender, ethnicity, etc., and recognizing facial expression. For the gender and ethnicity recognition, we present an effective and efficient approach on this issue by combining both boosted local texture and shape features extracted from 3D face models, in contrast to the existing ones that only depend on either 2D texture or 3D shape of faces. In order to comprehensively represent the difference between different genders or ethnics groups, we propose a novel local descriptor, namely local circular patterns (LCP). LCP improves the widely utilized local binary patterns (LBP) and its variants by replacing the binary quantization with a clustering based one, resulting in higher discriminative power as well as better robustness to noise. Meanwhile, the following Adaboost based feature selection finds the most discriminative gender- and ethnic-related features and assigns them with different weights to highlight their importance in classification, which not only further raises the performance but reduces the time and memory cost as well. Experimental results achieved on the FRGC v2.0 and BU-3DFE data sets clearly demonstrate the advantages of the proposed method. For facial expression recognition, we present a fully automatic multi-modal 2D + 3D feature-based facial expression recognition approach and demonstrate its performance on the BU–3DFE database. Our approach combines multi-order gradientbased local texture and shape descriptors in order to achieve efficiency a nd robustness. First, a large set of fiducial facial landmarks of 2D face images along with their 3D face scans are localized using a novel algorithm namely incremental Parallel Cascade of Linear Regression (iPar–CLR). Then, a novel Histogram of Second Order Gradients (HSOG) based local image descriptor in conjunction with the widely used first-order gradient based SIFT descriptor are employed to describe the local texture around each 2D landmark. Similarly, the local geometry around each 3D landmark is described by two novel local shape descriptors constructed using the first-order and the second-order surface differential geometry quantities, i.e., Histogram of mesh Gradients (meshHOG) and Histogram of mesh Shape index (curvature quantization, meshHOS). Finally, the Support Vector Machine (SVM) based recognition results of all 2D and 3D descriptors are fused at both featurelevel and score-level to further improve the accuracy. Comprehensive experimental results demonstrate that there exist impressive complementary characteristics between the 2D and 3D descriptors. We use the BU–3DFE benchmark to compare our approach to the state-of-the-art ones. Our multi-modal feature-based approach outperforms the others by achieving an average recognition accuracy of 86,32%. Moreover, a good generalization ability is shown on the Bosphorus database
Wijenayaka, A. K. Lahiru Anuradha. "Improved theoretical prediction of nanoparticle stability and the synthesis, characterization, and application of gold nanopartticles of various morphology in surface-enhanced infrared spectroscopy." Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1931.
Повний текст джерелаFeng, Xinliang, Xiaodong Zhuang, Wuxue Zhao, Fan Zhang, Yu Cao, Feng Liu, and Shuai Bia. "A two-dimensional conjugated polymer framework with fully sp2-bonded carbon skeleton." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-224298.
Повний текст джерелаBaubet, Bertrand. "Influence de la morphologie 2D de la phase active sur la sélectivité des catalyseurs sulfures en HDS des essences." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10067.
Повний текст джерелаThis thesis examines the influence of the morphology of particles of molybdenum sulfide on selectivity of hydrotreating catalysts. Nanoparticles of active phase present two types of edges called “M-edge” and “S-edge” which may lead to different reactivities. The change in morphology of the 2D sheets could change the proportions of M and S edges exposed and thus the catalytic properties of sulfide catalysts. For this, non-promoted (Mo) and promoted (CoMo) catalysts, supported on alumina were prepared by dry impregnation and sulfide in various conditions (gas and temperature). Catalytic tests in selective hydrodesulfurization (HDS) of FCC gasoline (selectivity HDS /HYD) were then used to assess the impact of the morphology based on geometrical models which were constructed with DFT calculations and experimental characterizations (TEM, IR (CO), TPR, XPS). The results for Mo catalysts seem to confirm the influence of the 2D morphology selectivity HDS / HYD, M-edge appearing to be the most selective for non-promoted catalysts. They also highlight the importance of the reducibility more or less pronounced of the edges on the catalytic properties, especially on the M-edge. The different conditions of sulfidation seem to affect the morphology of the particles but also the specific chemical properties at each edge. Regarding to the promoted catalysts, the different conditions of sulfidation appear to act primarily at the distribution of the promoter between the M and S edges. However, interactions with the carrier appear to constitute an obstacle to promoting effects. In this context, sulfidations at high temperature in pure H2S lead to obtain significant gains in activity and selectivity. These results appear to be due to weak interactions with the carrier and to the presence of the promoter on the S-edge which could promote the HDS reaction and limit the HYD reaction. Finally, the interpretations made in terms of 2D morphology tend to confirm that this parameter can be an interesting line of development for hydrotreating catalysts. Optimization of the sulfidation conditions could effectively allow to vary the morphology and the rate of decoration of promoted catalysts which significantly improve the activity and selectivity
Lottin, Delphine. "Dimensions fractales, morphologie et caractéristiques dimensionnelles 2D et 3D d'agrégats de nanoparticules de suie aéronautique : Etude par microscopie électronique en transmission et tomographie électronique." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4012/document.
Повний текст джерелаSoot aggregates emitted by aircraft engines' combustion processes are involved in the modification of the global radiative budget and the air quality. The knowledge of their physical and chemical characteristics is a prerequisite to any evaluation of the way they may act in the atmospheric physical and chemical processes and their impact on the environment and public health. In this context, our study aims at determining the size and morphological characteristics of aircraft soot aggregates on the basis of experimental measurements by transmission electron microscopy (TEM) and electron tomography.We have acquired TEM pictures of soot aggregates emitted by aircraft engines. We have established a method to characterize the morphology of these aggregates by determining their elongation, their compacity and the tortuosity of their edge. This method is based on the analysis of their TEM projection. Besides, we have developed a software to process and analyse TEM pictures. It allows to reconstruct aggregates from their projections and to determine their size and morphological characteristics. Our results have lead us to study the validity of the relationships linking the 2D and 3D microphysical characteristics presented in the literature and to suggest new ones for the studied aggregates.These results constitute the first 3D morphological and size characterizations of aircraft soot aggregates using TEM and electron tomography. They highlight the fact that the morphological properties of these aggregates do not fulfil the hypotheses required for the use of the collective method to determine the mass fractal dimension
Feng, Xinliang, Xiaodong Zhuang, Wuxue Zhao, Fan Zhang, Yu Cao, Feng Liu, and Shuai Bia. "A two-dimensional conjugated polymer framework with fully sp2-bonded carbon skeleton." Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A30310.
Повний текст джерелаBouhnaida, Zaïnaba. "Étude comparative de trois systèmes de préparation canalaire en endodontie : Étude in vitro en micro-CT." Thesis, Reims, 2018. http://www.theses.fr/2018REIMO201/document.
Повний текст джерелаThe aim of this study is to compare the respect of the root canal morphology after instrumentation with different shaping systems (One Shape NEW Generation®, Wave One® and Revo-S®), by using Micro-Computed Tomography.We used a fully three-dimensional (3D) methodological process which involved the reconstruction, registration and segmentation. By this methodological process, images have been acquired and processed in order to extract registered canals images before and after the instrumentation. The segmentation artifacts like calcifications and debris have been taken into account. A method to estimate the non-instrumented zones is also described.The canal transportation was calculated for each slice of each root-third by comparing the position of the centroids before and after instrumentation. No significant difference was found between the three instrumentation systems when canal transport means were done.This 4-part methodological approach has enabled the validation of a reproducible 3D imaging protocol. This can be applied in vitro in endodontic research for analysis of the instrumental effects
Acharya, Rajendra. "Synthesis, Characterization and Photophysical Studies of Porphyrin and N-Confused Porphyrin Derivatives and Self-assembled Nano-Morphologies." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1376061548.
Повний текст джерелаAhonen, Jani. "Can morphologic restoration of hydropower outlet channels create hydraulically suitable spawning and larvae habitats for grayling? : Modelling the effects of environmental measures with HEC-RAS." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-144188.
Повний текст джерелаMoreau, Éric. "Etude de la morphologie et de la topologie 2D et 3D d'un sol argileux par analyse d'images - application à la décontamination des sols par champs électriques." Poitiers, 1997. http://www.theses.fr/1997POIT2261.
Повний текст джерелаSahel, Ai͏̈cha. "Mise au point de logiciels de traitement d'images pour l'étude de la morphologie et du comportement hydraulique d'un réseau 2D de fractures dans des roches granitiques." Poitiers, 1996. http://www.theses.fr/1996POIT2271.
Повний текст джерелаMishra, Maneesh Kumar. "Development of orthopedic insoles and shoes 3D design process for atypical foot morphologies." Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1I091.
Повний текст джерелаThe needs in the sector of orthopedic insoles are becoming more important. The medical purpose of these plantar prostheses is often to correct the posture or biomechanical imbalance that tends to cause pain in various areas of the body depending on the pathology of the patient. The need for personalization of orthopedic shoes is also increasing. This is due to the progression of people who are increasingly obese or have problems with diabetes or other diseases. But, the cost of its products can vary from one to two or more depending on the quality of the product that requires adaptation by a manual process to the morpology of the foot. Whatever the therapeutic product envisaged, the economic model is no longer adapted to the needs of patients and the budgetary imperatives of social security. A new creative process is needed and must incorporate digital tools to reduce these manufacturing costs, while improving the quality of products. Our study was to take stock of the means of measurement used and analyze the profession of podiatrist by highlighting the medical and economic aspects to detect the technological barrier. The implementation of the new design process for these therapeutic foot products required the acquisition of morphological, anthropometric and biomechanical knowledge of the foot. In order to characterize the foot dimenally and morphologically, a process of detection of anthropometric points and creation of morphological curves has been implemented. At this stage of the study, we were able to analyze a population of male and female individuals to extract the most representative morphologies of a target population. It was from unsupervised classification methods that we classified the population and detected centroids. The techniques that were then used to detect the anthropometric points of the foot were incorporated into the process of creating customized insoles. By combining this technique that extracts the outline encompassing the footprint, a method that uses this outline to create the 2D shape of the insole and the 3D shape of the standard shoe-last, we have created the 3D shape of the insole adjusted to foot and the standard shoe-last. This process showed the need to create the custom shoe-last of the person. After a detailed technical analysis of the shoe-last, we set up a customized shoe-last 3D creation process. This process directly takes into account the shape of the patient's foot on which we detect the anthropometric points and create the morphological contours of it. These contours serve to support a 3D space of ease on which is hung a network of curves defining the wire model of the surface of the shoe-last. This spatial ease is parametrizable in order to define a specific comfort to the patient or control his therapeutic needs. These two customization processes can be connected to each other to improve the wearing comfort of shoes for a patient or for the entire population by applying it to each centroid of the classification
Young, Sue Mea, and 楊淑媚. "Monte Carlo Simulations on the Evolution of 2D Surface Morphology." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/33552203434942930895.
Повний текст джерелаCheng, Hao-Yuan, and 鄭皓元. "The River Morphology Behavior Simulation after Dam Removal Using SRH-2D Numerical Model." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5080049%22.&searchmode=basic.
Повний текст джерела國立中興大學
水土保持學系所
107
Barrages are common hydraulic structures in Taiwan, such as the check dam, reservoir and weir. The aim of building the reservoir and weir are used to store water for people''s livelihood. Check dam is utilized to block sediment and effectively mitigate disasters to the downstream. However, as time passed by, barrages gradually lose its function of sediment storing gradually due to the serious deposition at upstream of the barrages. In addition, the shortage of sediment supply also induces significant scour downstream. The present study tries to adjust the barrages in order to effectively manage the sediment supply in downstream of the river . Ultimate targets are to let the river gradually return to the state of natural balance. In the research works, the SRH-2D numerical model is used to simulate Comb check dam located in Landao creek and Shigang Dam located in Daija river. The goals of research work are to assess the effects of fluvial change on adjusting the barrages in different ways, including the change of erosion and deposition, the degree of sediment transport, and influence area. The further work is to look for the proper and effective ways of adjusting the barrages to reduce the negative effects after adjusting the barrages. The numerical results show that more deposition appears in the downstream to cause the reduction of elevation between the upstream and downstream and gentler slope in the river, as more vertical bars of barrages are removed. The various types of adjusting the dam including four different ways. After 60 hours of flooding, the change of fluvial bed and degree of headward erosion are similar except Case five. Due to the steep slope and high concentration of sediment in Taiwan rivers. It is necessary to operate and manage the barrages normally. According to different demand conditions to adjust the barrages appropriately in order to achieve the balance and stability of the sediment supply. Finally, nature is the best way to make the river recover its original situation.
Sochorová, Zuzana. "Sledování tvorby plovoucího biofilmu Mycobacterium smegmatis - morfologická a proteomová analýza." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-306649.
Повний текст джерела