Tesis sobre el tema "CONEX framework"
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Jingzhi, Guo y n/a. "Integrating Ad Hoc Electronic Product Catalogues Through Collaborative Maintenance of Semantic Consistency". Griffith University. School of Computing and Information Technology, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050824.125257.
Texto completoGuo, Jingzhi. "Integrating Ad Hoc Electronic Product Catalogues Through Collaborative Maintenance of Semantic Consistency". Thesis, Griffith University, 2005. http://hdl.handle.net/10072/365489.
Texto completoThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Computing and Information Technology
Full Text
Silva, Agostinho Manuel Antunes da. "Improving industry 4.0 through service science: a framework to the portuguese ornamental stone sector in BIM procurement contex". Doctoral thesis, Universidade de Évora, 2018. http://hdl.handle.net/10174/23215.
Texto completoOrtigosa, Martinez Rogelio. "On a new variational and computational framework for polyconvex nonlinear continuum mechanics and convex multi-variable nonlinear electro-elasticity". Thesis, Swansea University, 2016. https://cronfa.swan.ac.uk/Record/cronfa34893.
Texto completoMorgan, Joshua Edward. "Dynamic Information Density for Image Classification in an Active Learning Framework". Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1588272709621413.
Texto completoHargrave, Catriona E. "The development of a clinical decision making framework for image guided radiotherapy". Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/117125/1/Catriona_Hargrave_Thesis.pdf.
Texto completoReshef, Aymeric. "Dual-rotation C-arm cone-beam tomographic acquisition and reconstruction frameworks for low-contrast detection in brain soft-tissue imaging". Electronic Thesis or Diss., Paris, ENST, 2018. http://www.theses.fr/2018ENST0044.
Texto completoInterventional C-arm systems are real-time X-ray imaging systems, that can perform tomographic acquisitions by rotating the C-arm around the patient ; however, C-arm cone-beam computed tomography (CBCT) achieves a lower contrast resolution than diagnostic CT, which is necessary in order to benefit from the clinical information of soft tissues in the brain. We propose a new C-arm CBCT acquisition and reconstruction framework to increase low-contrast detection in brain soft-tissue imaging. In order to emulate a bow-tie filter, a dualrotation acquisition is proposed. To account for all the specificities of the dual-rotation acquisition, a dedicated iterative reconstruction algorithm is designed, that includes the ramp filter in the cost function. By switching from filtered backprojection (FBP) to backprojection-filtration (BPF) reconstruction methods, we propose an alternative, direct reconstruction method for dual-rotation acquisitions. For single-rotation acquisitions, the method ensures to perform as good as FBP with arbitrarily coarse angular sampling in planar geometries, and provides a different approximation from the Feldkamp-Davis-Kress (FDK) algorithm in the cone-beam geometry. Although we used it to emulate a virtual bow-tie, our dual-rotation acquisition framework is intrinsically related to region-of-interest (ROI) imaging through the truncated acquisition. With few or no modification of the proposed reconstruction methods, we successfully addressed the problem of ROI imaging in the context of dual-rotation acquisitions
Stühmer, Jan [Verfasser], Daniel [Akademischer Betreuer] [Gutachter] Cremers y William T. [Gutachter] Freeman. "A Convex Optimization Framework for Connectivity Constraints in Image Segmentation and 3D Reconstruction / Jan Stühmer ; Gutachter: Daniel Cremers, William T. Freeman ; Betreuer: Daniel Cremers". München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1131253671/34.
Texto completoMcLaggan, Martyn Scott. "Novel fire testing frameworks for Phase Change Materials and hemp-lime insulation". Thesis, University of Edinburgh, 2016. http://hdl.handle.net/1842/15896.
Texto completoKervazo, Christophe. "Optimization framework for large-scale sparse blind source separation". Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS354/document.
Texto completoDuring the last decades, Blind Source Separation (BSS) has become a key analysis tool to study multi-valued data. The objective of this thesis is however to focus on large-scale settings, for which most classical algorithms fail. More specifically, it is subdivided into four sub-problems taking their roots around the large-scale sparse BSS issue: i) introduce a mathematically sound robust sparse BSS algorithm which does not require any relaunch (despite a difficult hyper-parameter choice); ii) introduce a method being able to maintain high quality separations even when a large-number of sources needs to be estimated; iii) make a classical sparse BSS algorithm scalable to large-scale datasets; and iv) an extension to the non-linear sparse BSS problem. The methods we propose are extensively tested on both simulated and realistic experiments to demonstrate their quality. In-depth interpretations of the results are proposed
Ben, Amar Marwa. "Characterization of adsorption processes for the removal of metal ions from waste effluents using biosorbents and graphene-based sorbents. Studies in Batch and in fixed-bed column". Doctoral thesis, Universitat de Girona, 2021. http://hdl.handle.net/10803/673800.
Texto completoLes aigües residuals generades per activitats agrícoles i industrials diverses contenen quantitats relativament grans d’ions metàl·lics tòxics, entre els què s’inclouen els ions Cd(II), Cu(II), Pb(II) i Cr(VI). L’eliminació d’aquests contaminants té un gran interès tant des de la perspectiva de la salut com del medi ambient. La contaminació per arsènic, generalment associada a l’entorn geoquímic, és un problema mundial a causa de la seva aguda toxicitat i carcinogenicitat. L'oxidació de diferents espècies minerals a causa de les condicions redox del medi aquàtic fa que l'arsènic sigui soluble i entri al medi ambient a través de l'aigua de drenatge. Les tecnologies convencionals per tractar les aigües residuals i depurar les aigües, com la precipitació, la coagulació-floculació, els processos de membrana, l’electrodiàlisi i l’intercanvi iònic, són d’utilitat limitada pel seu alt cost, la seva ineficiència en l’eliminació de baixes concentracions de metalls i, de vegades, també perquè poden generar grans volums de fangs. L’adsorció és un tractament alternatiu d’interès atesa la seva simplicitat, la seva capacitat d’eliminar ions metàl·lics a nivell de traces, el seu baix cost, curt temps d’operació i la potencial reutilització dels adsorbents. L’adsorció es pot basar en processos d’adsorció física, adsorció química i d’intercanvi iònic. Entre els diferents materials absorbents, el carbó actiu és el més utilitzat malgrat el seu preu elevat i els costos de regeneració. Com adsorbents alternatius, eficients i ecològics s’ha proposat l’ús de residus agrícoles i subproductes derivats de les indústries forestals, entre els que cal esmentar, entre d’altres, els residus de te i cafè, closques de diferents fruits secs, serradures, escorces, panotxes de blat de moro, pellofes d’arròs, pells de fruita, polpa de remolatxa sucrera, raïm de palma, fulles de blat de moro, i, en general, tot tipus de residus cel·lulòsics i lignocel·lulòsics. Molts d’aquests biosorbents han mostrat tenir una bona capacitat d’adsorció d’ions metàl·lics atesa la seva estructura porosa i la presència de grups funcionals carbonil, carboxil, hidroxil i d’altres tipus com amino o tiol en la superfície del biosorbent. . El tipus de grups funcionals i composició química dels materials lignocel·lulòsics fa que siguin una bona alternativa a altres adsorbents pel tractament d’efluents contaminats. Els costos d’aquests tractaments serien baixos si s’utilitzen els biosorbents adients disponibles localment. Per tant, en el nostre cas, s’han seleccionat residus agro-industrials lignocel·lulòsics disponibles a la regió mediterrània, com els pinyols d’oliva i les pinyes (estròbils), i s’ha avaluat la seva eficiència en l’eliminació d’ions metàl·lics tòxics com Pb(II), Cu(II), Cd(II) i Cr(VI)
Programa de Doctorat en Química
Nicklin, Hannah. "First person theatre : how performative tactics and frameworks (re)emerging in the digital age are forming a new personal-as-political". Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/14579.
Texto completoLondon, Palma Alise den Nijs. "Frameworks for High Dimensional Convex Optimization". Thesis, 2020. https://thesis.library.caltech.edu/13856/1/london_palma_2020.pdf.
Texto completoWe present novel, efficient algorithms for solving extremely large optimization problems. A significant bottleneck today is that as the size of datasets grow, researchers across disciplines desire to solve prohibitively massive optimization problems. In this thesis, we present methods to compress optimization problems. The general goal is to represent a huge problem as a smaller problem or set of smaller problems, while still retaining enough information to ensure provable guarantees on solution quality and run time. We apply this approach to the following three settings.
First, we propose a framework for accelerating both linear program solvers and convex solvers for problems with linear constraints. Our focus is on a class of problems for which data is either very costly, or hard to obtain. In these situations, the number of data points m available is much smaller than the number of variables, n. In a machine learning setting, this regime is increasingly prevalent since it is often advantageous to consider larger and larger feature spaces, while not necessarily obtaining proportionally more data. Analytically, we provide worst-case guarantees on both the runtime and the quality of the solution produced. Empirically, we show that our framework speeds up state-of-the-art commercial solvers by two orders of magnitude, while maintaining a near-optimal solution.
Second, we propose a novel approach for distributed optimization which uses far fewer messages than existing methods. We consider a setting in which the problem data are distributed over the nodes. We provide worst-case guarantees on the performance with respect to the amount of communication it requires and the quality of the solution. The algorithm uses O(log(n+m)) messages with high probability. We note that this is an exponential reduction compared to the O(n) communication required during each round of traditional consensus based approaches. In terms of solution quality, our algorithm produces a feasible, near optimal solution. Numeric results demonstrate that the approximation error matches that of ADMM in many cases, while using orders-of-magnitude less communication.
Lastly, we propose and analyze a provably accurate long-step infeasible Interior Point Algorithm (IPM) for linear programming. The core computational bottleneck in IPMs is the need to solve a linear system of equations at each iteration. We employ sketching techniques to make the linear system computation lighter, by handling well-known ill-conditioning problems that occur when using iterative solvers in IPMs for LPs. In particular, we propose a preconditioned Conjugate Gradient iterative solver for the linear system. Our sketching strategy makes the condition number of the preconditioned system provably small. In practice we demonstrate that our approach significantly reduces the condition number of the linear system, and thus allows for more efficient solving on a range of benchmark datasets.
Derenick, Jason C. "A convex optimization framework for multi-agent motion planning". 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3354764.
Texto completoLung, Tou I. y 竇一龍. "The Investigation of 10th Grade Student''''s Alternative Framework on Image Formation by A Convex Lens". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/03082347269101991585.
Texto completo國立高雄師範大學
物理學系
91
This study is in two stages. The purpose of the first stage is to investigate the alternative framework on“Image formation by a convex lens”for 10th grade students. The purpose of the second stage is to diagnose the source of alternative frameworks that come from each. During the first stage of this study, a pen-paper tests was adopted as the method(Cronbach’s α = 0.89), and was given to 295 first grade students of girl’s senior high schools in Tainan county in 2001 academic year. The quantitative method was used to analyze the student’s responses in pen-paper tests. These were classified according to the conceptual construct of the alternative frameworks. During the second stage of this study, a semi-structured individual interview was adopted as the method designed by the researcher ad supra. this was given to 24 selected typical students that were representatives of each alternative framework in the first stage of this study. The qualitative method was used to analyse the student’s response during the interview and they were classified according to the alternative frameworks. According to the data analyses, The results indicated that the alternative framework on“Image formation by a convex lens”of 10th grade students can be classified into eight types as follows : 1、If part of the lens is covered, part of the image will vanish. 2、Light from an object travels in parallel rays. 3、Light from an object must pass through the center of a lens. 4、The three principal rays that travel from the object must pass through the lens to form the“image”. 5、“Image formation by a convex lens”and“Image formation by a pinhole”work on the same principle. 6、the center of a lens is more important than the circumference of the lens when“Image formation by a convex lens”is considered. 7、When a lens is divided into two separate regions, Two complete and individual images will be formed. 8、The image must“fit through”the aperture, so the measure and shape of the image will change with the aperture. According to the data analyses, The source of alternative frameworks can be classified into eight types as follows : 1、student’s naive concept. 2、student’s experience from daily life. 3、from the use of metaphors. 4、from confusion about the analogies. 5、student’s logical inferences from lineal cause and effect. 6、students do not establish a link between new knowledge and old belief systems. 7、knowledge gaps from bad teaching methods. 8、wrong figures or illustrations in the textbook.
Mudunuru, Maruti Kumar. "A Framework for Coupled Deformation-Diffusion Analysis with Application to Degradation/Healing". Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9185.
Texto completoYoung, Andrew. "Mobilising the Enterprise: A Game Theoretical Trust Framework for Emerging Systems". Thesis, 2016. https://vuir.vu.edu.au/31049/.
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