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Chen, Yinghua. "Solution structure of the target recognition domain of zoocin A, an antibacterial enzyme, and the metal binding site of zoocin A." Thesis, [Tuscaloosa, Ala. : University of Alabama Libraries], 2009. http://purl.lib.ua.edu/2202.
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O'Rourke, Annalee D., and n/a. "Prevalence and regulation of the gene encoding Zoocin A." University of Otago. Department of Microbiology & Immunology, 2007. http://adt.otago.ac.nz./public/adt-NZDU20070501.162825.
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Selected strains of Streptococcus equi subsp. zooepidemicus produce a bacteriocin-like inhibitory substance called zoocin A. Zoocin A has bacteriolytic activity against closely related species of streptococci, including the etiological agents of dental caries and Streptococcus pyogenes. Zoocin A functions to hydrolyse the peptidoglycan of bacterial cell walls. Producer-cell immunity to zoocin A is encoded by zif, the zoocin A immunity factor. The zooA-zif gene locus is chromosomally encoded and flanked by two transposon-like sequences with significant similarity to the lss-lif locus encoding lysostaphin in Staphylococcus simulans. This suggested the possibility that the zooA-zif locus was acquired by S. equi subsp. zooepidemicus through a horizontal gene transfer event. Studies conducted to examine this hypothesis were unable to establish the mechanism by which zooA-zif was acquired. Examination of 24 S. equi subsp. zooepidemicus strains using random amplified polymorphic DNA analysis and pulse field gel electrophoresis showed that the species was highly heterogeneous. Examination of the 24 strains using Southern hybridisation revealed only three S. equi subsp. zooepidemicus strains contained the zooA and zif genes; however the partial open reading frames (flaR and rgg-like) flanking zooA and zif appeared to be conserved in all tested strains. Long template PCR was used to examine this chromosomal area containing the zooA and zif genes in 24 S. equi subsp. zooepidemicus strains. These results, along with comparison of sequence data from two zoocin A producing strains, and analysis of the sequenced S. equi subsp. zooepidemicus H70 and S. equi subsp. equi 4047 genomes showed the area surrounding the zooA-zif locus to be one of considerable genetic variation substantiating the hypothesis that zooA-zif were acquired via horizontal gene transfer.
Studies on zoocin A production suggested that zooA expression was under carbon catabolite regulation, (CCR). In the Gram-positive bacteria CCR, is mediated by the carbon catabolite control protein (CcpA). CcpA is a DNA binding protein that can negatively regulate transcription of its target gene by binding to a catabolite-responsive element (CRE). This study reports the regulation of zif and zooA expression in response to cellular growth on different carbon sources, the presence of a ccpA-like gene in the genome of S. equi subsp. zooepidemicus, the presence of a CRE sequence in the promoter region of zooA, and the effect of a ccpA deletion on zooA expression. Zoocin A activity, zooA and zif mRNA transcript levels, and zooA and zif reporter gene activities were monitored during growth of S. equi subsp. zooepidemicus 4881 in a pH-controlled batch culture system. Zoocin A titres were maximal when the bacteria were grown on a starch-based medium and minimal when grown on a glucose-based medium. Northern hybridization showed that zif was constitutively expressed during growth regardless of the carbon source available. In contrast, zooA was transcribed at low levels in cells grown on a glucose-based medium but at much higher levels in cells grown on a starch-based medium. Use of a zooA promoter-chloramphenicol acetyl transferase (CAT) reporter demonstrated that zooA expression increased 17-fold in cells grown on a starch-based medium. Use of a zif promoter-CAT reporter showed that in cells grown on a starch-based medium zif was transcribed approximately 4 times as strongly as in cells grown on glucose. Transcription of zif was always much less than that of zooA. A ccpA deletion mutant appeared to exhibit complete de-repression of zooA under all growth conditions. Together these data showed that zoocin A expression was regulated in response to the carbon source on which the bacteria were grown.
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Rautio, R. P. (Riku-Petteri). "Cosmological Zoom simulations." Bachelor's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201610272951.
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Cosmological “zoom-in” simulations are a modern class of numerical simulations with many interesting uses. In zooms an area of interest, such as a galaxy, is resolved to a high degree, while it’s surroundings are left at a coarser resolution to relieve the computational burden. Here I review some recent studies using zoom simulations and discuss the benefits and potential of zoom simulations compared to regular numerical simulations as well as semianalytic models. I will focus on the advantages of the increased resolution in zooms, such as the ability to resolve giant molecular clouds and to better model high redshift galaxies.
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Coveñas, Mogollón Lesly Janet, Salas Julio Miguel Failoc, Agüero Fernando Martinez, and Ramos Maria Luisa Pascual. "Short deportivo zoom." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652894.
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El objetivo de la presente investigación es demostrar que el proyecto Short deportivo multifuncional ZOOM, es una idea innovadora para deportistas que necesitan de una prenda deportiva que satisfagan sus necesidades de llevar objetos personales y obtener resistencia física. Contamos con un equipo de cuatro accionistas que tienen experiencia en diferentes áreas de la empresa. Con este proyecto se desea ayudar a niños en contexto de vulnerabilidad, destinando el 1% de las ventas. El producto se diferencia en calidad, diseño y satisfacción del cliente.
Como puntos importantes, se define los aspectos generales del negocio, el planeamiento estratégico y se demuestra la investigación o validación de mercado. Además, se desarrolla el plan de marketing, plan de operaciones, la estructura organizacional y recursos humanos. Finalmente, se explicará el plan financiero, cual el horizonte del proyecto es de cinco años, la inversión inicial será de S/ 215,920 financiados en 80% por capital de los accionistas y 20% por capital externo mediante un préstamo bancario.
El precio de venta unitario de la prenda S/119.00 en los dos primeros años. El proyecto es viable desde el punto de vista económico ya que la TIR del flujo de caja de libre disponibilidad de 154.83% es mayor al COK de 10.38%. El proyecto es viable desde el punto de vista financiero ya que la TIR del flujo de caja del inversionista de 166.52% es mayor al WACC de 13.95%.<br>The objective of this research is to demonstrate that the ZOOM multifunctional sports shorts project is an innovative idea for athletes who need sportswear that meets their needs to carry personal belongings and obtain physical resistance. We have a team of four shareholders who have experience in different areas of the company. For this project we want to help children in a context of vulnerability, allocating 1% of sales. The product differs in quality, design, and customer satisfaction.
As important points, the general aspects of the business are defined, the strategic planning and the research or market validation is demonstrated. Also, the marketing plan, operations plan, organizational structure, and human resources are developed. Finally, the financial plan will be explained, in which the project horizon is five years, the initial investment will be
S / 215,920 financed 80% by shareholder capital and 20% by external capital through a bank loan.
The unit sale price of the garment S / 119.00 in the first two years. The project is economically viable since the IRR of the freely available cash flow of 154.83% is greater than the COK of 10.38%. The project is financially viable since the investor's cash flow IRR of 166.52% is higher than the WACC of 13.95%.<br>Trabajo de investigación
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Young, Sharon Y. "Zookie: A program on self protection for pre-school age children." CSUSB ScholarWorks, 1986. https://scholarworks.lib.csusb.edu/etd-project/389.
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O'Dea, Aaron. "Environmental inferences using recent and fossil bryozoans." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302204.
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Glaenz, Thomas Eric. "Untersuchung zur Pathogenese des Morbus Zoon." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972194231.
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Donard, Mélanie. "Le zoom ou l'image d'une image." Thesis, Paris 3, 2012. http://www.theses.fr/2012PA030124.
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Utiliser un zoom pour donner l’apparence du travelling est une illusion d’ordre perceptif, c’est pourquoi je voudrai penser le zoom comme le passage d’une image à l’agrandissement (ou rétrécissement) de cette même image. Il est fondamentalement une image d’image qui s’évaluera à l’aune de nouveaux concepts que sont le centrement, la mobilité du surcadre virtuel, la durée descriptive et l’aplanissement. Dans une problématique de la duplication, le rapport entre l’image et son référent sera à questionner : l’image du zoom sera semblante ou ressemblante car elle tire sa qualité de l’écart qui se creuse entre l’image et son image initiale. Elle engendre un centre imaginaire comme fiction ou au contraire une empreinte du réel. C’est en ce sens que le zoom crée des images, des images qui nous regardent et en retour nous donnent conscience de notre propre regard. Souvenons nous de Brunelleschi et de son expérience par effet de miroir qui fit que l’homme se voyait regardé par son propre regard au "fond" d’un tableau en perspective, dans l’ouverture de cette porte qui aspire le regard et renvoie le peintre dans un face à face avec son double, son image. Le zoom, à l’instar de la perspective est aussi une métaphore du regard : il produit l’image d’un objet façonnant l’image du regard. L’image du zoom, ce signe à déchiffrer, s’est substituée au réel en le redoublant et, dans le même temps, a été menée à disparaître derrière la transparence d’une image de la réalité. Nous sommes confrontés à l’idée que la réalité serait susceptible d’attester de l’image et que finalement l’image pourrait être créatrice de réel<br>The zoom lens, originally invented for advanced optical instruments, soon came into use in the field of still photography before being adapted to the motion picture camera. It is a development that brought an end to the stability and the transparency of the image in favor of movement and visibility within that same image. To make use of a zoom to give the impression of a tracking shot is to propagate a form of perceptual illusionism, which is why I choose to consider the zoom as the passage from an image to the enlargement (or shrinking) of that very image. The zoom is fundamentally an image of an image that is to be understood in light of new concepts such as central framing, descriptive long takes, the flattening of the image, and the virtual frame within a frame. While evoking the notion of duplication, the connection between the image and its referent is to be questioned: an image made by a zoom lens is one of resemblance, as it is characterized by the gap that is formed between the image and its origin. It engenders an imaginary center as a form of fiction, or on the contrary, is marked by reality. It is in this sense that the zoom creates images that stare back at the spectator, rendering him conscious of his own gaze. One could evoke Brunelleschi’s experiment, which used a mirror so that one is observed by his own gaze in the "distance" of a painting in perspective, thus drawing in the gaze of the painter, confronting him with his double, his image. The zoom, like the notion of perspective, is also a metaphor for vision: it produces the image of an object that is shaped by the image of the gaze. The image of the zoom, a sign to be decrypted, substitutes reality by doubling it, yet is also vowed to disappear behind an image of reality. We are confronted with the idea that reality can be called on to vouch for the image, and that the image has the capacity to create reality
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Sam, Regina 1978. "ZOOM : a performance-energy cache simulator." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/87891.
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Gaspard, François. "Localisation et calibration avec un zoom." Nice, 2001. http://www.theses.fr/2001NICE5612.
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Considérant l’émergence de systèmes visuels actifs monoculaires à focale variable, nous nous intéressons, dans cette thèse, au formalisme et aux équations qui permettent d’obtenir une perception visuelle de la géométrie et de la cinématique d’une scène 3D. L’utilisation d’une caméra équipée d’un zoom présente de nombreux intérêts, d’une part au niveau de la précision et de la robustesse des algorithmes basés sur l’utilisation d’un tel capteur, et, d’autre part, au niveau des propriétés géométriques du mouvement engendré lors d’une variation de focale. La pris en compte des spécificités physiques des paramètres conduits, par ailleurs, à la mise en place d’algorithmes de minimisation non linéaire adaptés au problème considéré. Enfin, l’observation de structures planes permet, lorsque le motif est connu a priori, de déterminer la position du plan par rapport à la caméra et de déduire des équations sur la calibration de la caméra<br>Considering the emergence of active visual systems with variable focal length, this thesis focuses on the paradigm allowing the visual perception of object geometry and cinematic properties. Since zooming consists not only in intrinsic parameters variations, but also in an optical center position translation such a camera is of interest considering both the geometric properties of such a displacement and the contribution to the measure precision. Nonlinear implicit equations are frequently minimized in computer vision either to estimate a parameter from an initial guess ot to refine a previous linear estimation. In such configurations, the local minimum of interest and the initial guess are rather close. We thus present a specific method for the minimization of such nonlinear implicit equations, based on both a complete specification of the parameters and a randomized algorithm. Finally, considering known planar structures allow to recover the 3D position of a plane and to obtain two equations according to the intrinsic parameters
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Tordoff, Ben. "Active control of zoom for computer vision." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270752.
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Hayman, Eric. "The use of zoom within active vision." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365740.
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Almeida, Sílvia Feola Gomes de. "Zoon Politikon: a condição natural da autoridade." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/8/8133/tde-13092012-120941/.
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O tema do animal político como condição natural da autoridade visa compreender, ao menos em parte, a questão da autoridade em Aristóteles. Nessa perspectiva, o foco central desta discussão é o fundamento da autoridade numa potência natural, que pertence a um tipo específico de homem. O que exclui, por natureza, todos os demais da participação deste polo da relação de comando e subordinação.<br>The theme of the political animal as the natural condition of authority intends to comprehend, at least in some part, the matter of authority in Aristotle´s philosophy. In this perspective, the central focus of this discussion is that the basis of authority lays in a natural power that belongs only to a specific kind of men. Which excludes, by nature, for all the others the participation on this share of the relationship that is, by definition, one that assents on the command and subordination of the parts.
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Lavest, Jean-Marc. "Stéréovision axiale par zoom pour la robotique." Clermont-Ferrand 2, 1992. http://www.theses.fr/1992CLF21445.
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Les travaux presentes dans ce memoire s'inscrivent dans le cadre de la modelisation en vision artificielle. Ils ont pour but d'etudier les possibilites offertes par un zoom, d'inferer des informations tridimensionnelles. L'etude des phenomenes physiques se produisant lors d'un changement de distance focale, montre que le processus de reconstruction mis en uvre par un objectif a focale variable, s'apparente a celui de la stereovision axiale. La modelisation d'un objectif aussi complexe fait apparaitre que le modele stenope n'est pas apte a apprehender les transformations optiques d'un zoom, sans avoir prealablement pris quelques precautions et qu'il est necessaire de recourir au modele optique epais pour comprendre les phenomenes mis en jeu. L'utilisation du modele stenope comme base de projection perspective ne sera valable que si la distance entre l'objet et le plan image n'est plus consideree comme fixe. La prise en compte des facteurs de distorsion introduits par le systeme de prise de vues est une etape indispensable pour obtenir des resultats coherents. L'aspect experimental de ce memoire aborde deux types de reconstruction a partir d'un zoom. Toutes deux sont issues de sequence d'images reelles. La premiere concerne les objets de revolution. Une methode originale basee sur la resolution du probleme de projection perspective inverse, conduit a des resultats satisfaisants, puisque l'erreur moyenne de reconstruction est inferieure a 2%. La seconde concerne, pour sa part, les objets polyedriques. Deux approches de reconstruction sont egalement proposees. La premiere utilise une methode de calibrage classique du systeme de prise de vues tandis que la seconde met en uvre un developpement original base sur la conservation du rapport anharmonique
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Chang, Matthew Tsu-Yang 1967. "Pupil aberration in modular zoom lens design." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288903.
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In any zoom lens, by virtue of the differential motions of lens groups, individual zoom groups experience both conjugate and pupil shifts during zooming. When using a modular design approach, in which lens groups are designed independently, one has to take into account the dynamic aberration matching among lens groups. Deliberate aberration can be introduced to zoom groups to produce an overall compensatory effect over the zoom range. Similarly perfect pupil matching among zoom groups cannot be maintained for a continuum of zoom positions. With the deliberate introduction of pupil aberration on the group level, compensatory effects can be obtained and a more desirable pupil match can be achieved, resulting in better stability of system image performance over the zoom range. The investigation presents a systematic explanation of how intrinsic lens group aberration contents can affect the overall aberrational behavior of mechanically compensated zoom systems. Particularly, the investigation centers around the explicit use of lens group pupil spherical aberration in controlling residual aberrations in zoom lenses. The study explores its capability in controlling the variation of distortion, which is often the dominant residual aberration in zoom systems. Different techniques for implementing explicit pupil spherical aberration control are also explored. The method employed in the study involves the use of black box lens modules. Lens groups are represented by mathematical constructs instead of actual constructional parameters in which individual lens group aberration contents can be manipulated directly. Instead of attempting to model the zoom lens problem analytically, actual ray trace results and well proven facts in aberration theory are relied upon. The method is to use ray trace experiments to substantiate the empirical arguments. Several zoom lens configurations are selected and converted into lens module equivalents. The optimum intrinsic lens group aberration contents are found using global optimization techniques. The aberration behavioral trends are then gathered and the connections between optimum lens group aberration contents and system aberrational behavior are observed. Conclusions are drawn based on the observations and well established results in aberration theory.
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Ham, Wilhelmus Adriaan van. "Macht en gezag in het Markiezaat : een politiek-institutionele studie over stad en land van Bergen op Zoom (1477-1583) /." Hilversum : Verloren, 2000. http://catalogue.bnf.fr/ark:/12148/cb401253243.
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Vieira, Estela Rosana Dur?es. "Defici?ncias nutricionais de macronutrientes em mudas de eucalipto afetam o consumo alimentar, desenvolvimento e fitofagia de Podisus nigrispinus (Dallas, 1851) (Hemiptera: Pentatomidae)?" UFVJM, 2015. http://acervo.ufvjm.edu.br/jspui/handle/1/801.
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Previous issue date: 2015<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes)<br>A busca por esclarecimentos direcionados ? fitofagia de percevejos predadores pode fornecer subs?dios que beneficiam os programas de controle biol?gico, tornando-os mais eficazes. Sabendo-se que os macronutrientes est?o envolvidos em diversos processos fisiol?gicos dos insetos, o objetivo deste trabalho foi identificar o efeito da omiss?o de macronutrientes em mudas de eucalipto no desenvolvimento e consumo alimentar do Podisus nigrispinus. Al?m disso, procurou-se certificar se a fitofagia, provoca perdas nas mudas. Este estudo foi conduzido em casa de vegeta??o e os tratamentos consistiram na omiss?o individual de nitrog?nio, f?sforo, pot?ssio, c?lcio, magn?sio e enxofre na solu??o nutritiva, onde as mudas de eucalipto estavam sendo conduzidas. Pupas de Tenebrio molitor L. (Coleoptera: Tenebrionidae), foram oferecidas ad libitum aos percevejos predadores. Comprovou-se a import?ncia da complementa??o nutricional em plantas para o desenvolvimento e preda??o do P. nigrispinus. A alimenta??o em plantas deficientes em nitrog?nio e magn?sio diminuiu a efici?ncia de preda??o deste zoofit?fago. E a omiss?o de c?lcio, magn?sio e enxofre afetou, negativamente, o desenvolvimento deste percevejo predador, prolongando seu est?gio imaturo. Em rela??o ao efeito da fitofagia nas plantas, verificou-se que P. nigrispinus n?o causa quaisquer danos ?s mudas de eucalipto, embora a extra??o de macronutrientes das plantas seja fundamental para estes insetos. O balan?o nutricional adequado das plantas ? essencial para obter sucesso em programas de controle biol?gico em que se utilizam predadores zoofit?fagos.<br>Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2015.<br>ABSTRACT
The search for explanations aimed at phytophagy stink bugs predators can provide subsidies enjoyed by biological control programs, making them more effective. Knowing that the macronutrients are involved in many physiological processes of insects, the aim of this study was to identify the effect of the absence of macronutrients in seedlings of eucalyptus in the development and food consumption Podisus nigrispinus as well, make sure to phytophagy, causes losses in plants. This study was conducted in a greenhouse and the treatments consisted of individual nitrogen omission, phosphorus, potassium, calcium, magnesium and sulfur in the nutrient solution, where the eucalyptus seedlings were being conducted. Pupae of Tenebrio molitor L. (Coleoptera: Teneobridae) were offered ad libitum to bedbugs? predators. The results of this experiment confirmed the importance of nutritional supplementation in plants for development and predation of the predator of Podisus nigrispinus. Feeding on plants deficient in nitrogen and magnesium reduced the predation efficiency of this zoophytophagous. And the calcium omission, magnesium and sulfur affected negatively on the development of this insect predators, extending their immature stage. Regarding on the effect of phytophagous in plants, the results confirmed that the predators do not cause any damage to seedlings of eucalyptus, although the extraction of plants are essential macronutrient for these insects. This work shows that the proper nutritional balance of the plants are essential for success in biological control programs that use zoophytophagous predators.
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Yan, Yufeng, and Jose Sasian. "Photographic zoom fisheye lens design for DSLR cameras." SPIE-SOC PHOTO-OPTICAL INSTRUMENTATION ENGINEERS, 2017. http://hdl.handle.net/10150/626080.
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Photographic fisheye lenses with fixed focal length for cameras with different sensor formats have been well developed for decades. However, photographic fisheye lenses with variable focal length are rare on the market due in part to the greater design difficulty. This paper presents a large aperture zoom fisheye lens for DSLR cameras that produces both circular and diagonal fisheye imaging for 35-mm sensors and diagonal fisheye imaging for APS-C sensors. The history and optical characteristics of fisheye lenses are briefly reviewed. Then, a 9.2- to 16.1-mm F/2.8 to F/3.5 zoom fisheye lens design is presented, including the design approach and aberration control. Image quality and tolerance performance analysis for this lens are also presented. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
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Griggs, Peter M. Eng (Peter A. )Massachusetts Institute of Technology. "Database updates using interactive Pan and Zoom visualizations." Thesis, Massachusetts Institute of Technology, 2021. https://hdl.handle.net/1721.1/130689.
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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, February, 2021<br>Cataloged from the official PDF of thesis.<br>Includes bibliographical references (pages 49-51).<br>As datasets continue to get larger, there is a great need for visualization systems that scale well while maintaining interactivity. Kyrix [1] is a system that helps developers create scalable pan and zoom visualizations. It combines visualization paradigms for good performance like data tiling and prefetching with a database backend that creates spatial indexes for faster querying. This thesis modifies Kyrix to support direct manipulation of datasets through a data visualization. We add bindings to the Kyrix specification that allow the developer to enable updates in a visualization. The user can then interact with the visualization and update the data in order to test a hypotheses, add new data, or fix a data error. We showcase this functionality by implementing three different types of Kyrix visualizations: an NBA timeline visualization, an election forecasting visualization, and a scatter plot visualization of NBA game scores. We report the update performance statistics for each of the demo visualizations and provide an evaluation of changes to the Kyrix specification language.<br>by Peter Griggs.<br>M. Eng.<br>M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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Jungwirth, Matthew Edward Lewis. "Active Reflective Components for Adaptive Optical Zoom Systems." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/255163.
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This dissertation presents the theoretical and experimental exploration of active reflective components specifically for large-aperture adaptive optical zoom systems. An active reflective component can change its focal length by physically deforming its reflecting surface. Adaptive optical zoom (AOZ) utilizes active components in order to change magnification and achieve optical zoom, as opposed to traditional zooming systems that move elements along the optical axis. AOZ systems are theoretically examined using a novel optical design theory that enables a full-scale tradespace analysis, where optical design begins from a broad perspective and optimizes to a particular system. The theory applies existing strategies for telescope design and aberration simulation to AOZ, culminating in the design of a Cassegrain objective with a 3.3X zoom ratio and a 375mm entrance aperture. AOZ systems are experimentally examined with the development of a large-aperture active mirror constructed of a composite material called carbon fiber reinforced polymer (CFRP). The active CFRP mirror uses a novel actuation method to change radius of curvature, where actuators press against two annular rings placed on the mirror's back. This method enables the radius of curvature to increase from 2000mm to 2010mm. Closed-loop control maintains good optical performance of 1.05 waves peak-to-valley (with respect to a HeNe laser) when the active CFRP mirror is used in conjunction with a commercial deformable mirror.
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Sinclair, Mark Macdonald. "Object tracking with a pan, tilt and zoom camera." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/14426.
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This thesis reviews the existing work done on tracking with pan/tilt/zoom cameras and proposes a novel method of multiscale block tracking with perspective cameras using principles and methods from both computer vision and computer graphics. The theory of perspective transforms in 3D graphics is reviewed as well as relating real world cameras to synthetic cameras through camera calibration. Conventional 2D block tracking methods are reviewed and the expanded to track under pan, tilt and zoom conditions. Two methods of pan/tilt/zoom tracking are developed and then applied to blocks and blobs (connected regions of pixels). A novel offline technique of fitting contours to these track points is then explored with and without the presence of pan, tilt and zoom. A method of updating the multiscale reference block is presented and the tracker is evaluated without block updating (feed forward) and with block updating and position filtering. Experimental results for people following are presented using synthetic ray-traced data with absolute ground truth and real sequences taken with a commercial pan/tilt/zoom camera with hand estimated ground truth. All sequences were processed offline, however, with optimisation it appears to be feasible to implement a real-time solution. Applying position filtering and predictions, using a Kalman filter, improves results and robustness. The application of this method to existing vision techniques is discussed as well as the possible methods for real-time implementation of these algorithms.
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Mistro, Diomar Cristina. "Modelos para dispersão de abelhas africanizadas : um zoom matematico." [s.n.], 1998. http://repositorio.unicamp.br/jspui/handle/REPOSIP/306716.
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Orientador: Wilson Castro Ferreira Jr<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica<br>Made available in DSpace on 2018-07-24T01:56:57Z (GMT). No. of bitstreams: 1
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Previous issue date: 1998<br>Resumo: Não informado.<br>Abstract: Not informed.<br>Doutorado<br>Doutor em Matemática Aplicada
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Chagneau, Anthony. "Méthode de zoom structural étendue aux hétérogénéités non linéaires." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTS051.
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Une approche multi-échelle introduit une méthode de zoom structural dans une zone d’intérêt, appelé le patch, utilisant uniquement des opérateurs de projection de champs. Les différents comportements dans le patch et dans la structure globale sont pris en compte sans utiliser des paramètres de poids entre énergies locales et globales comme la méthode Arlequin. Notre problème initial est de fiabiliser numériquement la méthode de zoom structural pour le cas linéaire, et plus précisément de choisir un solveur performant sur les espaces de Krylov, ainsi qu’un préconditionnement et une rénumérotation efficaces et adaptés au système à résoudre. Une fois le solveur choisi, cette approche est validée mécanique sur deux essais, un de traction et l’autre de cisaillement. Une étude paramétrique sur le patch est effectué afin d’obtenir une solution acceptable. L’objectif suivant est d’étendre cette approche à des régions comportant des hétérogénéités à comportement non linéaire. On s’est intéressé au comportement élastoplastique. L’hypothèse de départ est de considérer le comportement élastoplastique uniquement à l’intérieur du patch et un comportement élastique sur la structure globale ainsi que sur la zone de raccord. On valide ensuite cette approche avec différents essais comprenant plusieurs défauts et donc plusieurs patchs ainsi que des histoire de chargement différents<br>A multi-scale approach introduces a structural zoom method into a region of interest, called the patch, using only field projection operators. The different behaviours in the patch and in the overall structure are taken into account without using weight parameters between local and global energies such as the Arlequin method. Our initial problem is to digitally reliable the structural zoom method for the linear case, and more precisely to choose a high-performance solver on Krylov spaces, as well as effective preconditioning and ordering adapted to the system to be solved. Once the solver is chosen, this approach is mechanically validated in the mean of two tests, namely traction and shear. A parametric study of the patch is performed to obtain an acceptable solution. The next objective is to extend this approach to regions with heterogeneities of non-linear behaviour. The method has been reached out for elastoplastic behaviour. Initial hypothesis assumes the elastoplastic behaviour only inside the patch and an elastic behaviour of the overall structure as well as of the gluing area. Finally, this approach is validated with different tests including several faults and therefore several patches as well as different loading history
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Kruse, Daniel R. "Tucson's Zoom Records and Late-1950s American Urban Popular Culture." Thesis, The University of Arizona, 2012. http://hdl.handle.net/10150/268475.
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The marketing and distribution of pre-recorded music for sale and public consumption is a cultural development as profound as any in the twentieth-century musical world. It is especially relevant to late-1950s American rock and roll, in terms of the music's capture in the rapidly-evolving environment of the recording studio, its release into the marketplace via independent record labels, and its enthusiastic embrace by the burgeoning youth culture of the era. Within this multi-dimensional context, Zoom Records, a tiny, independent record label, was born in Tucson, Arizona. A unique convergence of technological, artistic, and commercial developments and historical events gives special import to the Zoom Records story, as a lesson in entrepreneurship, artistic expression and personal transformation.
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Briem, Harry Eibl Maximilian. "Entwurf und Implementierung einer editierbaren, Fokus-plus-Kontext-basierten (F+C-basierten) Tabelle." [S.l. : s.n.], 2007.
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Phiri, Lelemba Chitembo. "Impacts and issues of a social innovation approach to development finance: a case study of Zoona." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/29029.
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This paper seeks to orientate research on the issues and impacts of pursuing a social innovation approach to development finance and the extent to which it impacts the development of economic, personal and social capital in developing countries. It draws on conceptual ideas around the evolution of development finance from a pure aid perspective to more innovative approaches that seek to increase uptake of development funds where they are needed most (at the base of the pyramid) and reduce fungibility. The paper provides an exploratory case study analysis of attempts by Zoona, a socially innovative private organization in Zambia that is leveraging mobile technology to increase access to finance and financial services to small and micro businesses and the unbanked in Zambia using an agent network. The research was qualitative study and gathered insights from 11 agents and 8 employees through 19 personal interviews. A hybrid approach to thematic analysis was employed in the research and results revealed that whilst Zoona's work was enabling economic and personal growth for the agents it was not necessarily building social capital within communities. The paper concludes with some recommendations on how the concept of socially innovative approaches to development finance, as supplementary forms of distributing development funds to traditional forms, can be improved on when applied by private organizations and local networks to enable the development of economic, personal and social capital and develop the capacity of communities.
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Jayasooriya, Chandana K. K. Kwon Hyuck M. Jayaweera Sudharman K. "Zoom-based super-resolution image reconstruction from images with different orientations." Diss., A link to full text of this thesis in SOAR, 2006. http://soar.wichita.edu/dspace/handle/10057/649.
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Thesis (M.S.)--Wichita State University, College of Engineering, Dept. of Electrical and Computer Engineering.<br>"December 2006." Title from PDF title page (viewed on Oct 31, 2007). Thesis advisers: Hyuck M. Kwon, Sudharman K. Jayaweera. Includes bibliographic references (leaves 48-50).
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Oliveira, Francisco Carlos de Mattos Brito. "Microtexto : uma ferramenta de zoom contínuo de auxílio a leitura eletrônica." Universidade de Fortaleza, 2002. http://dspace.unifor.br/handle/tede/69868.
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Previous issue date: 2002-05-20<br>The amount of text that we are required to read in the present days is very large. One of
the reasons for a poor performance of electronic text systems may result from the fact
that users avoid reading the whole text and make decisions mostly based on their
headings (Fox, 1992). This work proposes the use of a continuous zooming interface
attached with a natural language processing system. Aiming to minimize this problem, a
computer program capable of analyzing texts written in the most varied natural
languages was developed. The computer program permits the user to construct his/her
own natural language grammar rules. A second grammar is implemented, this one is for
zooming rules. The zooming grammar is used to decide which text element, or text
construction, will be visible in which zooming level.<br>A quantidade de textos que cuja leitura é exigida nos dias de hoje é muito grande. Uma
das razões para o baixo desempenho de sistemas que auxiliem a leitura em dispositivos
eletrônicos pode resultar na não leitura do texto como um todo, fazendo com que a
tomada de decisão seja feita apenas como base nos títulos (FOX, 1992). Este trabalho
propõe o uso de uma interface de zoom contínuo acoplada a um sistema de
processamento de linguagem natural. Para minimizar este problema, foi desenvolvido
um programa de computador capaz de analisar textos nos mais diversos idiomas,
levando em consideração as construções gramaticais próprias de cada um deles. Para
alcançar tal objetivo uma gramática sensível ao contexto é implementada. Recursos
computacionais são disponibilizados para que o usuário possa montar sua própria
gramática. Uma segunda gramática, essa de regras de zoom, também é construída. A
gramática de zoom é utilizada para decidir em que nível de zoom as construções
gramaticais estarão visíveis.
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Sinn, Richard M. Eng Massachusetts Institute of Technology. "Virtual pan-tilt-zoom for a wide-area-video surveillance system." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/46489.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.<br>Includes bibliographical references (p. 95).<br>Advancements in the CMOS Image Sensor have enabled very high-performance, high resolution imaging systems to be built at relatively low cost. The availability of high-pixel count video imaging systems that can cover a wide field-of-view enables a surveillance technique called Virtual Pan-Tilt-Zoom. Virtual Pan-Tilt-Zoom provides the same functional properties as a mechanical pan-tilt-zoom setup, but it does not suffer from the physical limitations presented by a mechanical setup. A video system using Virtual Pan-Tilt-Zoom would have immediate continuous access to a high pixel-count image representing a wide coverage area, and it would enable a user to "virtually" pan, tilt, and zoom around the coverage area by reading out only the relevant image data associated with a Region of Interest that is dynamically defined by the user. This paper will examine the various camera electronics readout architectures that are possible to support the Virtual Pan-Tilt-Zoom function. Then, this project will examine and implement a specific implementation of the readout architecture for a high-resolution video camera system developed at MIT Lincoln Laboratory. The Multi-Aperture Sparse Imager Video System (MASIV) developed at MIT Lincoln Laboratory incorporates CMOS imagers to create an 880 Mega pixel image, and was used as the platform to implement the camera electronics for Virtual Pan-Tilt-Zoom functionality.<br>by Richard Sinn.<br>M.Eng.
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SOUMAROVÁ, Michaela. "Analýza výskytu vybraných zoonóz v Jihočeském kraji." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-188181.
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This diploma thesis is focused on the evaluation of six selected zoonoses with the occurrence in South Bohemia (campylobacteriosis, salmonellosis, listeriosis, tick-borne meningoencephalitis, Lyme borreliosis, tularemia) between the years 2003-2013. Campylobacteriosis and salmonellosis were evaluated the most common zoonoses in the South Bohemian Region during the monitored period. Their common feature is the alimentary transmission. Between 2003 to 2008 salmonellosis recorded the highest number of reported cases, on the contrary, campylobacteriosis has reported the highest number of occurrences since 2008. District of Czech Budweis showed the highest incidence of both zoonoses during the monitored period (4,139 cases of salmonellosis and 4,924 cases of campylobacteriosis). Another but not less important zoonotic is tick-borne meningoencephalitis, which incidence had the highest number in South Bohemian Region of all the regions of Czech Republic. The second part of the thesis is based on questionnaire studies focused on awareness of zoonoses and the issue of resistance and overuse of antibiotics. In total 479 questionnaires were evaluated. The survey findings may be equally described as interesting and positive, since the respondents had considerable awareness of the issue of antibiotic resistance.
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Svobodová, Barbora. "Znalosti žáků středních škol v oblasti vybraných zoonóz." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-354085.
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The subject of the dissertation deals with the secondary school pupil's awareness of zoonoses. Zoonoses are the diseases transmited from animals to human beings. Those are one of the topics of biology study currently. The main aim of the dissertation is theoretical definition of the matter in the first place. For knowledge testing have been chosen these four illness: Toxoplasmosis, Lyme boreliossis, Rabies and Creuzfeldt-Jakobo disease. With these chosen illness the main research goal is to provide a comprehensive collection of information about the details such as disease transfer, spread of the disease, disease development, cure and avoidance. The research part of the dissertation tries to find out the extent of knowledge about the chosen kinds of zoonoses among the pupils at specialized secondary schools. As a tool of quantitative research has been used a pupil's didactic test. As based on the evaluated results we may say that the pupil's knowledge at explored schools is relatively satisfactory.
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Федорова, Кароліна Володимирівна. "Регіональні зооніми та фітоніми (на матеріалі діалектів Англії)". Магістерська робота, 2020. https://dspace.znu.edu.ua/jspui/handle/12345/2074.
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Федорова К. В, Регіональні зооніми та фітоніми (на матеріалі діалектів Англії) : кваліфікаційна робота магістра спеціальності 035 "Філологія" / наук. керівник О. І. Лужаниця. Запоріжжя : ЗНУ, 2020. 73 с.<br>EN : The thesis presents the study of English dialect phytonyms and zoonyms on
the material of three English dialects – Essex, Cumberland and Lancashire. The
study researches three thematic groups of phytonyms and eight of zoonyms.
The research of dialects has a special interest in modern linguistics as they
are the constant sources of language innovation and reveal the peculiarities of
regional culture, local customs and social way of life.
The purpose of this research paper was to study structural (morphological and
syntactic), derivational and semantic characteristics of phytonyms and zoonyms in
a dialect continuum of Essex, Cumberland and Lancashire in the 18 – 19
centuries.
The analyses showed that flora and fauna of the regions studied is variable
and rich, especially in grass, vegetables, fruits, berries, flowers, crops, domestic
animals, birds, fish, cattle. That shows the pecularities of living and spheres of
work which prevail in the studied regions and also proves the stereotypical
image of England as of the “green” country with lashy woods and parks.
Practical analyses underhold on morphological, structural and semantic level
showed that the dominant phytonimic pattern of phytonyms and zoonyms is
nominal with one derived stem; one and more stem words are also present.
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Zhou, Chu-Yi, and 周楚宜. "A Writer\'s Note on the TV script of Zoomin\'s Night." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/c9ttv4.
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Chen, Huihsuan, and 陳暉暄. "A Novel Zoom Concave Grating." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/22794477765567815501.
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碩士<br>國立中央大學<br>光電科學研究所<br>92<br>With the continuous advance in optical technology, Wavelength division multiplexing (WDM) network will play an important role in wide area backbone networks. Optical wavelength switching, compared with optical packet switching, is a more mature and more cost-effective choice for optical switching technologies. Besides, the technology of time division multiplexing (TDM) in optical communication networks has been working smoothly for a long time.
WDM system can full utilize fiber bandwidth and increase transmission capacity that is the most acceptable structure in recent years. In this thesis, we present improved system performance using zoom concave grating. There are two classes of important research issues. The first class focuses on the concave grating can supply WDM with dispersion compensation and focusing image. The N-order diffracted signal light by the blazed grating is directed to the fiber of output and focused on spot size. The second class of problems focuses on the radius of curvature zoom. The change of curvature was made over to the focus point. The effect equals to a channel switch.
This study is important since the performance of existing networks can be improved by distribution of data flow rate properties of WDM technologies.
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Shree, Mona. "Zoom Detection in Video Sequences." Thesis, 2016. http://ethesis.nitrkl.ac.in/9321/1/2016_MT_MShree.pdf.
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The work presented in this thesis is mainly based on the discriminative method. Zooming is one of the type of camera motion, it may be global or local. The aim of this thesis is to detect global zoom in the video sequences. Fisher linear discriminant (FLD), which works on the principal of linear discriminant analysis, has been used as the classifier for zoom motion classification in video sequences. The basic motivation behind the choice of FLD is that it mitigates the curse of dimensionality by using projection based approach and reduces the overhead of handling higher dimensional data by projecting it to lower dimension. To counter the outliers due to movement of objects as well as noise due to the encoding strategy which can be present at any location in the motion vector field in the video sequences, a quadrant based strategy has been employed. MLE (maximum likelihood estimator) is used to estimate the statistical parameters like mean and standard deviation of the orientation of MV’s and a novel weighting strategy has been used to counter the skipped macroblocks present in interframe motion field. Along with that mean deviation is used in place of mean which is less sensitive to noise. Scatter plot analysis and mathematical analysis have been carried out for feature selection. Features have been exploited from the orientation of the block motion vectors which renders this method computational advantages. Moreover, with significant maturity of coding standards like H.264 and MPEG-4, video are directly being stored in the compressed formats thereby opening up the area of the compressed domain video analysis. An extension of the proposed method has been carried out for zoom type classification i.e. for zoom-in and zoom-out classification from the identified zoom frames of video. The proposed method may find wide applications in the field of image and/or video processing.
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Yang, Cian-Li, and 楊千立. "High Zoom Ratio Optical Zoom System with Liquid Lens for Two Mega-Pixel Image Sensor." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/73690514863061577044.
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碩士<br>國立清華大學<br>動力機械工程學系<br>97<br>The objective of this research is to investigate the feasibility of a zoom system using liquid lens as the active element. Different from the conventional zoom lens which uses moving lens element to perform zoom function, the liquid lens changes system power without movement, which potentially provide a compact solution for zoom system. This research proposes three different types of liquid zoom system which have totally different design concept and system feature, and has its own limit on zoom ratio.
The first type is double liquid lens zoom system whose variator and compensator are replaced with liquid lens in traditional movable zoom system. The 1.5× zoom ratio had been achieved by double liquid lens zoom system without any movable component. But the large variation of the liquid surface curvature causes serious aberration and deteriorates image quality.
The second one is liquid-compensated movable zoom system. A movable lens performs the zoom function, and a liquid lens is used for correcting the image plane. The principle of smallest change has been applied for reducing the variation of the liquid surface curvature during the zooming process. The 2.5× zoom ratio had been achieved but has still been limited by the variation of the liquid surface curvature, and could not be exceed to 3×.
The third one is the combination of liquid lens and the concept of optically compensated zoom system. The zoom ratio could be improved to 4× because the zero-crossing of back focal shift during the zoom process, and the liquid lens is disposed to slightly correct the image plane in accordance.
This outcome of the research is a liquid zoom system for two mega-pixel image sensor with 60 degree full viewing angle, 4× zoom ratio and a total track less than 30 mm. The high zoom ratio of 4× is equivalent to digital camera but only one moving group compared with the four or five moving groups of the traditional zoom system. In conclusion, the liquid zoom system provides a compact solution for portable devices such as mobile phone camera and PC camera.
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Chen, Yu-Ting, and 陳昱廷. "Stereo Matching with Multiple Zoom Images." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/t3tcxc.
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碩士<br>國立中正大學<br>電機工程研究所<br>103<br>This thesis investigates stereo matching with zooming information.In the proposed technique, two zoom lens cameras are used to capture multiple stereo image pairs with different focal length.With the assistance of zoom image pairs captured from the same camera, it is possible to increase the correctness of stereo matching results.In addition, a zoom rectification method is proposed to simplify the zoom vector computation.In the experiments, we use the bad pixel rate to compare the results obtained from the real scene images using conventional stereo matching techniques and the proposed stereo with zooming approach. Moreover, we test the proposed algorithm on the Middlebury dataset with digital zoom to demonstrate the effectiveness of our work.It is shown that our technique is able to reduce the bad pixel rate using both the local and global stereo matching algorithms.
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Chen, Tzu-Hsiang, and 陳子祥. "Parameter Identification of Variable Zoom Camera." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/10762814197240470807.
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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>94<br>In the process of using a digital camera to measure real word objects, the problems we face directly are radial lens distortion, unknown camera model parameters, and gauge of illumination.All those problems will affect the measurement results. When we want to use a digital camera to measure objects, the first step we need to do is to calibrate camera parameters. For an un-calibrated camera computer vision system, it couldn’t measure the real size or even the comparative size of objects. After completing camera calibration, we can obtain the parameters from calibration. With the object image coordinates, we can calculate the real size of the objects.
In the traditional measurement of non-zoom camera calibration, the objects can’t be measured or with difficulties in it if the objects are out of the view or the objects are too small to see. We can overcome this problem with changing the focal length parameter. For the non-zoom camera calibration, we use the Zhang method as basis that he putted forth in 1999. In this dissert, we discuss the focal length parameter and systematize it in the calibration model. We separate the focal length parameter from the Zhang calibration camera model, and measure the object size in many different focal lengths. We will prove that it can improve the measurement error when we change the focal length. Finally, we discuss iris and the initial focal length effect to the measure error.
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Hsieh, Ming-Hsian, and 謝明憲. "Study and design of zoom dermoscope." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/06747234807149419563.
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碩士<br>國立交通大學<br>光電工程學系<br>100<br>Traditional dermoscope is important in medical diagnosis, but the most popular devices, hand-held dermoscopes, are fixed focal length lens design and still cannot store image in digital format for analysis or comparison in the future. This issues is more important today especially in medical cosmetic. Therefore, we decide to design a zoom lens for digital sensor to be a digital zoom dermoscope.
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Hsieh, Shang-Wei, and 謝尚瑋. "Design of Shortwave Infrared Zoom Lens." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/08867505005583611106.
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碩士<br>逢甲大學<br>電機工程所<br>99<br>This paper studies to design of shortwave infrared zoom lens, analyzes radiant intensity of image and the resolution of image by Non Sequential Ray Tracing. So, it could reduce the cost of development and also decrease the time of research. This research uses the U.S patent No.4854681 for the initial structure. The final design result is zoom lens with four groups where are positive, negative, positive, and positive power. The system is constituted with eleven lenses, it include three aspheric lenses. It focal length is from 24.619mm to 146.588mm, respond the wide-angle mode to the telephoto mode. On the axis, the modulation transfer function (MTF) at 20lp/mm is greater than 0.3. Off the axis, the MTF is greater than 0.2. The relative illumination is over 90%. The distortion is below 5%. And through the tolerance analysis, we verify the system’s production.
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Chang, Sheng-Yi, and 張聖翊. "Stray light analysis for zoom lens." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/22527160811374048332.
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碩士<br>國立中央大學<br>光電科學研究所<br>98<br>This paper analyses and suppresses the stray light for a 3 mega pixel and 3x zoom lens of the mobile phone. Established the fabrication components to the zoom lens and observed the average illumination and the illumination chart on the sensor for source incidence from many angles by using LightTools. Classified the stray light to route and coating, blackened, and changed the shape of the CA for aspherical lens are the corrected ways for suppression. After simulated by using LightTools, compared the average illumination and the illumination chart on the sensor and the efficiency.
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TIEN, CHUN-YEN, and 田駿彥. "Gaussian Analysis of Zoom Lens Design." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/24279814468695006718.
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碩士<br>亞洲大學<br>電腦與通訊學系碩士班<br>96<br>Cell phone cameras change very fast during last few years. The resolution and pixels number of Cell phone camera are increased rapidly. As the innovation of manufacture capability of Cell phone camera, the lens system was developed from fixed focal length to changeable focal length (Zoom lens).First we found a Gaussian solution of the zoom system with so-called two-optical-component method, in which the lenses in the system are divided into two groups. Then analyzing three conditions of three-optical Gaussian solution；I also use four-optical Gaussian solution to assist this. From the procedure of analyzing these, I get the information that people who use the original and complicated Gaussian solution can quickly get the basic design of Gaussian according to different needs of “ specifications” because of the convenience what computers brought. Next the introduction of wide angle configuration of four groups zoom lens zoom lens system. By changing F/# and field of angle accompanied with moving the two groups lens of zoom lens system, we get the middle and telephoto configurations of four groups zoom lens. The image quality was evaluated by RFP, and MTF, from above, I can see the final outcomes of Optical Zoom Lenses Design.
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Chu, Pu-Yi, and 朱浦毅. "Control Method of Optic Zoom Curve." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05114223549525116811.
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碩士<br>國立中央大學<br>光電科學研究所<br>100<br>In this study, we will introduce a design method for controlling the zoom curve of the zoom lens by using the position of lens group of effect focal length differential. It can make the zoom curve smoother or easier to manufacture. We give some simple examples, and finally we design a 3X zoom and seven-group zoom lens which a half of field of view from 15.3 degree to 39.8 degree, by using the Code V and this optimization method, and show the result.
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張舜博. "The Design of Optical Zoom Scope." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/52168939188243423035.
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Lung, Hung-Cheng, and 龍泓成. "The Design of the Compact Zoom Lenses." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/05070568737600797116.
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碩士<br>逢甲大學<br>電機工程所<br>93<br>The goal for this thesis is to design three compact zoom lenses with different zoom ratios. The first design example with a zoom ratio of 1.89 has a focal length range of 36.15 mm to 68 mm, a maximum field angle of 64.6° and F/3.5-4.5. The second one with a zoom ratio of 2.55 has a focal length range of 30.8 mm to 78.45 mm, a maximum field angle of 70.24° and F/4.5-11.46. The third one with a zoom ratio of 3.74 has a focal length range of 23.29 mm to 87.17 mm, a maximum field angle of 73.8° and F/5.7-9.9.
Based on Gaussian optics structure, three different designs were successfully developed by an optimization technique with a user-defined merit function.
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KUO-CHUAN, WANG, and 王國權. "Design and Analysis of Zoom Lens System." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/26303979572214954276.
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碩士<br>國立臺北科技大學<br>光電技術研究所<br>91<br>Due to the crucial issues of digital still camera have been readily solved, digital still camera is popularly accepted by consumers in recent years. Among the manufacturing expenses of digital still camera, the zoom lens occupies the most of prime cost. Designing optical zoom system is more difficult than the fix focus lens for that the image plane must be fixed during zooming. Thus, the canceling not only monochromatic Seidel aberration but also chromatic aberration becomes very complicated. Traditionally, optical designer will follow customer’s need to complete zoom system by solving Gaussian solution of thin lens theory first, i.e. slide trajectory, lens power and magnification. Once the first-order solution can’t fit system request then the Gaussian solution have to be figured out again. In this paper, we will introduce and analysis the zoom theory of one group gradually to two group and finally three group structure. Moreover, we will discuss the aberration balance concepts and chromatic aberration free ideas. Furthermore, fast solution of first-order properties of zoom system utilizing merit function provided by optical design software. In this project, a zoom ratio 3x and 200-mega pixels zoom lens with power - + + arrangement is presented. There are eight lens elements with six glassed and two aspheric plastic lenses in this system. The second group acts as zooming part when changing system effective focal length while the first group operates as a compensator. The characteristics of high-level digital camera, which MTF is larger than 30% under 150 lps/mm and its distortion is small than
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Lin, Wei-Cheng, and 林煒晟. "Design and Fabrication of Soft Zoom Lens." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/4f8c3q.
Full textAbstract:
碩士<br>國立臺灣科技大學<br>機械工程系<br>94<br>With the increasing trends of volume minimization, ways of improving the traditional zoom lens had also been addressed, such as liquid lens and aspheric artificial lens. The main purpose of this research is to offer a new method in using Poly(dimethylsiloxane) (PDMS), a flexible material for the lens by way of gas-pressure to make the soft lens change its shape or its curvature, which in turns can change effect focal length of soft zoom lens system. This study is aimed at the experimentation of mechanical and optical properties of PDMS. And also to confer the influences of Young’s module, refractive index and Abbe number in different curing parameter. After deciding the mechanical and optical properties of PDMS, the after pressure deformation analysis of soft lens and soft zoom lens optical and mechanical design begin. During the making and the assembly of soft zoom lens, we discovered that when the gas-pressure is between 0~0.02Mpa using PDMS sphere zoom lens, the differences of effect focal length can reach up to 10~15 %. This experiment shows that the relationship between soft zoom lens and its' abilities is strong connected to the shape and the thickness of PDMS soft lens. For future experimentation the research can go towards this particular dimension.
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陳毅承. "Semantic Zoom for Vehicle Detector Data Visualization." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/5a7hf3.
Full textAbstract:
碩士<br>國立交通大學<br>多媒體工程研究所<br>102<br>The visualization of vehicle detector (VD) data is essential because the data play an important role in traffic control, policy development, and road situation report. Most previous works focus on visualizing trajectories obtained from global positioning system (GPS), which are detailed but less representative. In contrast, VD data report the statistic traffic information at each sensing site during a period of time, including speed, flow, and occupancy of each lane, which contain thorough traffic information for analysis. In this work, we visualize three-year VD data of freeways in Taiwan. The visualization depicts the traffic situation at a site over time using a sonic glyph that extends from left to right as time goes. The glyphs are vertically stacked and horizontally aligned according to VD's mileage and data time, respectively, to provide global insight. Our system also allows the semantic zoom, which changes the glyph appearance in a continuous manner, to enable overview and detailed visualizations. Analysts can explore events that expand an area with different sizes and that persist a period of time with various lengths. To evaluate the feasibility of our technique, we conducted a user study with experts who work in the freeway bureau and the institute of traffic and transportation. The feedback shows that our VD data visualization is helpful to traffic control and policy development.
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CHUANG, FU-MING, and 莊福明. "Total Solution of Zoom Optical System Design." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/61299605904276948535.
Full textAbstract:
博士<br>國立中央大學<br>光電(科學)研究所<br>84<br>A method was developed for solving zoom lens layout. The number
moving component is not limited by using this method. The
damped least squares method is used for finding the solution of
zoom lens and the polynomial equations are used for zoom run
during the optimization process. Several constraints are also
used for smoothing and minimizing the sensitivity of the
system. The solution areas of the three-component afocal zoom
system with two moving components are solved. There are totally
eight areas which are found by this analytical method. This
paper discusses a generalized two-component homotopic zoom
system, in which both refractive and reflective systems are The
solution areas of refractive and reflective homotopic are
classified. The technique for stable aberration correction of
zoom systems is described. The position of the zoom is
designated the reference position, and the primary aberrations
including the spherical aberration and longitudinal chromatic
aberration of the pupil, of each component are used as
independent variables. The values of these needed for stable
correction of the primary aberrations are determined, and the
different components are then designed. Two zoom systems are
designed in the final section of this paper to witness the
total solution of designing a zoom system. The is a 35mm
telephoto camera zoom system. The second design is a thermal
imager with 4 zooming components.
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Lo, Wen-tsung, and 羅文聰. "The Design of Zoom Lens for Radiometer." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/96059489929652949835.
Full textAbstract:
碩士<br>逢甲大學<br>資訊電機工程碩士在職專班<br>96<br>Radiometer is to be used as infrared formation of image system test station correction and emanation rates of infrared material measurement. This text is discussed with that lens design of far infrared radiometer, The first, It’s necessary to draw up system specification on design process, collect and select appropriate United States of America patent as our system primer structure. According to the system need and use the optics simulate software “Zemax” to make a optimize action to get the best optical performance.
The lens acquires finally of infrared zoom lens is compose of six lens, it’s equivalent focal length is 130~450mm, the range of FOV are 8 degree to 26 degree. the Distortion is less than one percentage, On axis of MTF is greater than 0.2 when spatial frequency at 10 lp/mm, Off axis of MTF is greater than 0.4 when spatial frequency at 10 lp/mm, the range of temperature compensate for 20℃ to 60℃. In design process use quality control method--- FMEA (Failure Mode for Effect Analysis) for process control of optic design. It’s including first order design and optimization process and assure of design quality. The zoom lens designs will be applied to the image type radiometer on this thesis.