Thèses sur le sujet « Reflection pattern »
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1
Chen, Yu-Ting. « REAL-TIME IMAGE PATTERN SENSOR FOR WELD POOL PENETRATION THROUGH REFLECTION IN GTAW ». UKnowledge, 2018. https://uknowledge.uky.edu/ece_etds/130.
Texte intégralRésumé :
In gas tungsten arc welding (GTAW), weld pool surface contains crucial information for welding development. In this research, simulate skilled welders to control the welding process and determine the penetration stages based on the weld pool reaction.
This study focuses on solving the uncertainty of the liquid weld pool in joint bases. The weld pool penetration process is highly depending on how the weld pool surface shape. To observe the weld pool, reflect the weld pool surface by the laser and image on the shield glass. The experiments show that the penetration can’t be determine by the reflecting grayness due to the variability of base metal. To control the joint bases diversity, fed a tip of the wire after the arc is established. Crate the new pattern of the weld pool penetration. Experiments verified the feasibility of this method.
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Giunta, Rosario Graziano. « Experiments towards a general implementation of some design patterns using aspect orientation ». Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1028.
Texte intégralRésumé :
This dissertation presents a novel technique to implement the behaviour of some widely used design patterns using a combination of aspect oriented programming and computational reflection.
Object-oriented languages do not support design patterns as a language construct, instead these have to be specifically implemented by the programmer. As a result, their implementation ends up scattered over different classes and tangled with the domain code of such classes, leading to reusability, modularity and comprehensibility issues.
The aspect-oriented implementations presented in this thesis get rid of such issues. A design pattern is implemented as an aspect which, by intercepting an annotation that marks an application class, enforces the role of the pattern on that class, thus making the pattern
available for the system.
Such implementations enjoy four properties, especially defined from from the analysis of the literature, considered useful and not found together in existing approaches.
Efficient variants of the proposed approach are also described and compared with the standard object-oriented approach in terms of running times.
The proposed implementations can be used in object-oriented legacy applications, applying specific refactoring steps to convert legacy code to make it use the aspect versions.
3
Wu, Hung-Jen. « Direct measurements of ensemble particle and surface interactions on homogeneous and patterned substrates ». Texas A&M University, 2005. http://hdl.handle.net/1969.1/3747.
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In this dissertation, we describe a novel method that we call Diffusing Colloidal
Probe Microscopy (DCPM), which integrates Total Internal Reflection Microscopy
(TIRM) and Video Microscopy (VM) methods to monitor three dimensional trajectories
in colloidal ensembles levitated above macroscopic surfaces. TIRM and VM are well
established optical microscopy techniques for measuring normal and lateral colloidal
excursions near macroscopic planar surfaces. The interactions between particle-particle
and particle-substrate in colloidal interfacial systems are interpreted by statistical
analyses from distributions of colloidal particles; dynamic properties of colloidal
assembly are also determined from particle trajectories.
Our studies show that DCPM is able to detect many particle-surface interactions
simultaneously and provides an ensemble average measurement of particle-surface
interactions on a homogeneous surface to allow direct comparison of distributed and
average properties. A benefit of ensemble averaging of many particles is the diminished
need for time averaging, which can produce orders of magnitude faster measurement
times at higher interfacial particle concentrations. The statistical analyses (Ornstein-
Zernike and three dimensional Monte Carlo analyses) are used to obtain particle-particle
interactions from lateral distribution functions and to understand the role of nonuniformities
in interfacial colloidal systems. An inconsistent finding is the observation of
an anomalous long range particle-particle attraction and recovery of the expected DLVO
particle-wall interactions for all concentrations examined. The possible influence of
charge heterogeneity and particle size polydispersity on measured distribution functions
is discussed in regard to inconsistent particle-wall and particle-particle potentials. In the final part of this research, the ability of DCPM is demonstrated to map potential energy
landscapes on patterned surfaces by monitoring interactions between diffusing colloidal
probes with Au pattern features. Absolute separation is obtained from theoretical fits to
measured potential energy profiles and direct measurement by sticking silica colloids to
Au surfaces via electrophoretic deposition. Initial results indicate that, as colloidal probe
and pattern feature dimensions become comparable, measured potential energy profiles
suffer some distortion due to the increased probability of probes interacting with
surfaces at the edges of adjacent pattern features. Measurements of lateral diffusion via
analysis of mean square displacements also indicated lateral diffusion coefficients in
excellent agreement with rigorous theoretical predictions.
4
Althammer, Egbert. « Reflection patterns in the context of object and component technology / ». [S.l. : s.n.], 2001. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB9819092.
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Wells, Kimberly Joyce. « Reflections of Social Change : Burial Patterns in Colonial Fairfax County, Virginia ». W&M ScholarWorks, 1997. https://scholarworks.wm.edu/etd/1539626090.
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Yabsley, Susan Anne. « The reflection of patterns of attachment in infancy in narratives of preschool children ». Thesis, University College London (University of London), 1999. http://discovery.ucl.ac.uk/1318014/.
Texte intégralRésumé :
This series of studies reports on the prospective and concurrent relation of attachment to a narrative based assessment of the five year old child's internal world. It relies on the exploration of a relatively new research measure designed to explore the internal world of the young child. No published studies have yet investigated the validity of this measure in relation to thoroughly tested measures of attachment patterns in infants and parents. Additionally, this study will investigate the independent contributions of mother and father. The first two chapters review the literature and introduce the instruments to be used. The initial chapter examines the theoretical points of view regarding the internal world and mental representations from the perspective of psychoanalytic, cognitive and attachment theory. It then discusses the move to a level of representation in attachment research that has made the current study possible. Chapter Two considers the history of the technique of doll play as a research tool and examines the scant research that has been published using the MacArthur Story Stem Battery. Chapter Three responds to a need for psychometric information regarding the MacArthur Story Stem Battery and the corresponding MacArthur Narrative Coding System by reporting on the construction of reliable and valid factors/scales. Subsequent chapters present these scales associations to demographic variables collected before the birth and during the infancy of the target children. Later chapters report on the longitudinal and concurrent associations between the scales with categories of infant-parent, child-parent and parental representations of attachment security and with parental assessments of child problem behaviours utilizing the reliable and validated Child Behaviour Checklist (CBCL). In addition, an attempt is made to construct theoretical profiles of secure and insecure children's responses to the story stem battery and to apply these profiles to the four groups of attachment patterns in the sample. The discussion focuses upon the creation of psychometrically valid scales relevant to important aspects of the child's internal world. It also concentrates upon discussing the confirmed and unconfirmed results of the application of these scales to this low-risk, non-clinical sample of the London Parent-Child Project.
7
Yoon, Hwan-Sik. « Design, Modeling, and Optimization of a Mechanically Reconfigurable Smart Reflector Antenna System ». The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1036426477.
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Danylov, A. B. « Reflection Spectra Simulation for Flat and Patterned Surfaces of CdTe Solar Elements ». Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42713.
Texte intégralRésumé :
The paper comprises the simulation of light total reflection from solar element multilayered structure. For CdTe solar cell the analysis of optical losses in two different types of solar cells with indium tin oxide and zinc oxide as transparent upper contact (with glass superstrate and without it) is performed. The effect of glass superstrate in the elements is discussed and spectral dependences for reflectance in plain layer structure are built. For textured surfaces of solar element layer the comparison of influence of different types of texture on total light reflection is carried out.
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Bexell, Felicia. « MINDTRIP : An exploration of mirror illusions in fashion design ». Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-22031.
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This work explores the interactive use of mirrored and reflective materials in the context of fashion. It draws parallels between the way in which it has been used in architecture in comparison to fashion and seeks a way to make a fair translation between the two mediums. The motive behind this work lies in the curiosity to explore reflective mirror materials in clothing beyond simply as shiny surface materials and aims instead to explore its illusive properties when combined with archetypical pattern prints. This to explore the potential aesthetic expressions it could bring to the fashion field. Using the theoretical approach of convergence, divergence, and transformation by Jones and methods by Thornquist that was slightly modified and reworked to fit the context of this project. Investigations with the reflective material were tested in different scales, both by draping with the material as is and by cutting and placing it in different ways in relation to the printed textile material. Derived from these experiments a new illusive material was created with special draping and shaping properties that came to define the collection as a whole.
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Seah, Elizabeth Jane Izett. « Patterns of attachment and reflective functioning in families of adolescents with eating disorders ». Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/629.
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This study investigated attachment patterns and mentalising capacity of adolescent girls with eating disorders, their mother’s reflective capacity, and family functioning. Girls with eating disorders scored higher rates of insecure attachment, lower attachment coherence and higher hypermentalising than non-clinical girls. Although mothers’ reflective functioning did not differ between groups, a proportion of clinical mothers scored very low reflective functioning compared to controls. Clinical families presented with higher depression, anxiety, communication difficulties and conflict.
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Zheng, Feng. « Using spectral reflection and multi-dye layer pixel values to quantify soil patterns for assessing field fertility conditions ». Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26212.
Texte intégralRésumé :
The variability of soil chemical properties exerts a great influence on the practice of fertilization and other soil management. Quantitative reliable measurements of the soil variability are vital to the accuracy of fertilizer recommendations and the effective uses of fertilizer. The aim of the thesis is to determine whether soil classifications and variability assessments can be facilitated by the use of quantitative remote sensing techniques.
An agricultural field with very contrasting soils was selected for this study and field variability in total and organic C, exchangeable cations, CEC, major fertility elements N, P, and K, soil water content and coarse fragments was examined using three different sampling techniques and laboratory analysis.
The remote sensing techniques evaluated in this study were: 1) laboratory spectral reflection measurements of soil samples in the green, red and two near IR bands using a multi-channel radiometer, and 2) multi-dye layer pixel value analysis of digitized color aerial photos taken at the time of sampling.
Conventional, selective and stratified random sampling techniques were used to quantify the soils in the field and although the variability in K, Ca, and P was high no significant differences were obtained in the mean values among the three techniques. Three distinct soil types were identified in the field, which included type I - very dark soils, type II - gravelly, very light colored soils, and type III - average brown or dominant soils. All three categories could be separated by Munsell value and chroma data. Significant differences in C, N, K, CEC, moisture content and coarse fragment content were obtained among the three soil types. Once the chemical data were translated into fertilizer requirements it became evident that soil type II (gravelly light colored soils) needed a higher K fertilizer rate than either type I or type III, thus suggesting that a differential fertilizer rate application within the field should be beneficial to crop performance.
Correlation and regression studies of soil parameters with spectral reflection and dye-layer pixel values revealed the nature of the relationships between soil spectral properties and physical and chemical conditions. Significant correlations were found between reflectance values and most of the chemical parameters, and between pixel values, soil chemistry and moisture content. In both cases, % organic C showed the highest correlation. The results from stepwise regression and discriminant analysis revealed that organic C, water content and color value were the most-dominant soil parameters to influence spectral or pixel value variations. The relationship between water content and pixel value was significant suggesting that the variation in water content mignt be quantified by an analysis of dye-layer pixel values. Soil organic matter and soil color proved to be best predicted by laboratory reflectance measurements.
Multi-variate cluster and discriminant analysis revealed that the soil types could be quantified with both spectral and multi-dye layer pixel value analysis and that the remote sensing data were best related to organic matter, soil color and soil moisture content in the field. The pattern of soil types in the field was determined visually by planimetry and by quantitative dye-layer pixel value analysis. The two results were found to be in close agreement and provided quantitative values for the spatial extent of the three soil types. These values were used to determine the total amount of fertilizers required for the field and the quantified spatial pattern is an excellent medium to facilitate soil sampling for fertilizer assessment for future cultivation.Land and Food Systems, Faculty of
Graduate
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Grayson, Louise. « Streets apart genres of editorial photographs and patterns of photographic practice ». Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/50796/1/Louise_Grayson_Thesis.pdf.
Texte intégralRésumé :
My doctoral research contributes to visual scholarship by investigating and defining representational strategies of three photographic genres – press photography, photojournalism, and documentary photography – using an ‘action genre’ approach (Lemke, 1995: 32). That is, rather than taking final photographic forms as being definitive of genre, I identify patterns of ‘activity types’ involved in the production of editorial photography to define genre (1995: 32). While much has been written on editorial photography, there is no organised body of scholarship that distinguishes between these three very different modes of photographic practice. I use a major documentary project to exemplify and analyse the impact of these genres on my own photographic practice, and to explore the production of meaning within the framework of these professional genres. I triangulate the theoretical framework through the use of interviews with established Australian professionals.
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Whitney, Brian T. « Searching for patterns of discourse in a sea of professional development : professional learning and teacher discourse / ». Boise State University : Complete ScholarWorks record including accompanying resources if available, 2009. http://scholarworks.boisestate.edu/td/20/.
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Young, Andre. « Improving the direction-dependent gain calibration of reflector antenna radio telescopes ». Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80915.
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Thesis (PhD)--Stellenbosch University, 2013.ENGLISH ABSTRACT: Utilising future radio interferometer arrays, such as the Square Kilometre Array (SKA), to their full potential will require calibrating for various direction- dependent effects, including the radiation pattern (or primary beam in the parlance of radio astronomers) of each of the antennas in such an array. This requires an accurate characterisation of the radiation patterns at the time of observation, as changing operating conditions may cause substantial variation in these patterns. Furthermore, fundamental imaging limits, as well as practical time constraints, limit the amount of measurement data that can be used to perform such characterisation. Herein three techniques are presented which aim to address this requirement by providing pattern models that use the least amount of measurement data for an accurate characterisation of the radiation pattern. These methods are demonstrated through application to the MeerKAT Offset Gregorian (OG) dual-reflector antenna. The first technique is based on a novel application of the Jaco bi-Bessel series in which the expansion coefficients are solved directly from the secondary pattern. Improving the efficiency of this model in the desired application leads to the development of a different set of basis functions, as well as two constrained solution approaches which reduce the number of pattern measurements required to yield an accurate and unique solution. The second approach extends the application of the recently proposed Characteristic Basis Function Patterns (CBFPs) to compensate for non-linear pattern variations resulting from mechanical deformations in a reflector antenna system. The superior modelling capabilities of these numerical basis functions, which contain most of the pattern features of the given antenna design in a single term, over that of analytic basis functions are demonstrated. The final method focusses on an antenna employing a Phased Array Feed (PAF) in which multiple beam patterns are created through th e use of a beam-former. Calibration of such systems poses a difficult problem as the radiation pattern shape is susceptible to gain variations. Here we propose a solution which is based on using a Linearly Constrained Minimum Varia nce (LCMV) beamformer to conform the realised beam pattern to a physics-based analytic function. Results show that the LCMV beamformer successful ly produces circularly symmetric beams that are accurately characterised with a single-term analytic function over a wide FoV.
AFRIKAANSE OPSOMMING: Die volle benutting van toekomstige radio interferometersamestellings, soos die Square Kilometre Array (SKA), benodig die kalibrering van verskeie rigting-afhanklike effekte, insluitend die stralingspatroon (bekend as die primêre bundel onder radio astronome) van elke antenne in só ’n samestelling. Hierdie benodig ’n akkurate karakterisering van die stralingspatrone op die waarnemingstydstip, aangesien veranderende bedryfskarakteristieke ’n beduidende afwyking in hierdie patrone veroorsaak. Verder, weens fund amentele perke in beeldverwerking, asook praktiese tydbeperkinge, bestaan daar ’n limiet op die hoeveelheid gemeetde data wat benut kan word om die nodige karakterisering mee te doen. Hierin word drie tegnieke ten toon gestel wat gemik is daarop om aan hierdie behoefte te voorsien deur die gebruik van modelle wat ’n minimum hoeveelheid metingdata benodig om ’n akkurate beskrywing van die stralingspatroon te lewer. Die verskeie metodes word aangebied aan die hand van die MeerKAT afset-Gregorian dubbelreflektorantenne. Die eerste tegniek is gebasseer op ’n nuwe toepassing van die Jacobi- Besselreeks waarin die sekondêre stralingspatroon direk gebruik word om die uitsettingskoëffisiënte op te los. Die doelmatigheidsverbetering van hierdie model in die huidige toepassing lei na die ontwikkeling van ’n nuwe versameling van basisfunksies, asook twee voorwaardelike oplossings wat die nodige aantal metings vir ’n akkurate, unieke oplossing verminder. In die tweede tegniek word die toepassing van die onlangs voorgestelde Karakteristieke Basisfunksie Patrone uitgebrei om te vergoed vir die nie-lineêre stralingspatroonafwykings wat teweeggebring word deur meganiese vervormings in die reflektorantenne. Die superieure modelleringsvermoëns van hierdie numeriese basisfunksies, wat meeste van die patroonkenmerke vasvang in ’n enkele term, bo dié van analitiese basisfunksies word gedemonstreer. Die laaste metode fokus op die gebruik van ’n gefaseerde samestellingvoer waarin veelvoudige bundelpatrone geskep word deur die gebruik van ’n bundelvormer. Die kalibrering van sulke instrumente word bemoeilik daardeur dat die patroonvorm gevoelig is vir aanwinsafwykings. Hier stel ons ’n oplossing voor waarin ’n lineêrbegrensde minimumstrooiing bundelvormer gebruik word om die stralingspatroon te pas op ’n fisika-gebasseerde analitiese funksie. Resultate toon dat hierdie bundelvormer sirkelsimmetriese bundels kan skep wat akkuraat beskryf word deur ’n een-term analitiese funksie oor ’n wye gesigsveld.
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Callahan, Brendan E. « Enhancing nature of science understanding, reflective judgment, and argumentation through socioscientific issues ». [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0003291.
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Chavoor, Greg. « Light Extraction Enhancement of GaN Based LEDs Using Top Gratings, Patterned Sapphire Substrates, and Reflective Surfaces ». DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/737.
Texte intégralRésumé :
In the last 15 years, an immense amount of research has gone into developing high efficiency Gallium Nitride based light emitting diodes (LED). These devices have become increasingly popular in LED displays and solid state lighting. Due to the large difference in refractive index between GaN and Air, a significant amount of light reflects at the boundary and does not escape the device. This drawback decreases external quantum efficiency (EQE) by minimizing light extraction. Scientists and engineers continue to develop creative solutions to enhance light extraction. Some solutions include surface roughening, patterned sapphire substrates, and reflective layers.
This study proposes to increase external quantum efficiency and optimize light extraction efficiency of several LED structures using finite difference time domain analysis (FDTD). The structures under investigation include GaN based LEDs with nanoscale top gratings, patterned sapphire substrates in combination with SiO2 nanorod arrays, and reflective surfaces below and above the sapphire substrate. First, we optimize GaN based nanoscale top gratings and increase light extraction by 17.8%. Next, we simulate ITO based top gratings and enhance light extraction by 40%. Third, we optimize patterned sapphire substrate period and width and the vertical position of a SiO2 nanorod array. We achieve as high as 51.8% improvement in light extraction. Finally, we increase light extraction by 160% with the use of a silver reflection layer.
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Barker, Gillian. « A well of living waters' Patterns of unity and diversity in gardens of the Islamic world form the seventh to the fourteenth centuries and their reflections in later garden des-sign ». Thesis, University of Bristol, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529886.
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Křepela, Pavel. « Yagi-Uda antény v planárním a drátěném provedení ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-316421.
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This work deals with the study of Yagi-Uda antennas, followed by analysis and design of planar antenna with wired reflector. The first part focused on the analysis of the antenna and parameters. Another part of the continuing investigation of the optimum parameters for a given antenna followed by a design in Wi-Fi 5 GHz band. The antenna is simulated in CST Microwave Studio. The final part devoted the results achieved
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Bickel, Manuel W. [Verfasser], Thomas [Akademischer Betreuer] Schomerus, Daniel J. [Gutachter] Lang et Stefan [Gutachter] Lechtenböhmer. « Viable communication systems : Knowledge management and text mining for reflecting communication patterns in municipal climate action and research on sustainable energy / Manuel W. Bickel ; Gutachter : Daniel J. Lang, Stefan Lechtenböhmer ; Betreuer : Thomas Schomerus ». Lüneburg : Leuphana Universität Lüneburg, 2021. http://d-nb.info/1226425607/34.
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Rimal, Sirish. « Characterization of Post-Plasma Etch Residues and Plasma Induced Damage Evaluation on Patterned Porous Low-K Dielectrics Using MIR-IR Spectroscopy ». Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849694/.
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As the miniaturization of functional devices in integrated circuit (IC) continues to scale down to sub-nanometer size, the process complexity increases and makes materials characterization difficult. One of our research effort demonstrates the development and application of novel Multiple Internal Reflection Infrared Spectroscopy (MIR-IR) as a sensitive (sub-5 nm) metrology tool to provide precise chemical bonding information that can effectively guide through the development of more efficient process control. In this work, we investigated the chemical bonding structure of thin fluorocarbon polymer films deposited on low-k dielectric nanostructures, using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). Complemented by functional group specific chemical derivatization reactions, fluorocarbon film was established to contain fluorinated alkenes and carbonyl moieties embedded in a highly cross-linked, branched fluorocarbon structure and a model bonding structure was proposed for the first time. In addition, plasma induced damage to high aspect ratio trench low-k structures especially on the trench sidewalls was evaluated both qualitatively and quantitatively. Damage from different plasma processing was correlated with Si-OH formation and breakage of Si-CH3 bonds with increase in C=O functionality. In another endeavor, TiN hard mask defect formation after fluorocarbon plasma etch was characterized and investigated. Finding suggest the presence of water soluble amines that could possibly trigger the formation of TiN surface defect. An effective post etch treatment (PET) methods were applied for etch residue defect removal/suppression.
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Ongito, Ongoro J. « Transformative Learning within the Online Learning Environment : The Impact of Learners' Gender, Epistemological and Self-Efficacy Beliefs on Generation of Knowledge in Online Discussion Forums ». Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1339044363.
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Gaudreau, Marie-Andrée. « Description de l’évolution du savoir infirmier chez les infirmières en prévention et contrôle des infections ayant suivi un cours en microbiologie et infectiologie ». Mémoire, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/7707.
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Résumé : L’Ordre des infirmières et infirmiers du Québec (OIIQ) a créé en 2011 une spécialisation pour les infirmières en PCI qui doivent maintenant suivre une formation de 2e cycle pour l’obtention de leur titre d’infirmière clinicienne spécialisée en PCI. Au sein de cette formation figure un cours de microbiologie et infectiologie (MI) qui vise à parfaire les connaissances et l’expertise en la matière. Jusqu’à présent, aucune étude n’avait été réalisée pour évaluer l’influence de ce cours sur le savoir infirmier des infirmières en PCI. Cette étude vise à décrire l’évolution du savoir infirmier des infirmières en PCI qui participent au cours de MI du programme de 2e cycle en PCI. Un devis qualitatif descriptif a été utilisé au cours de cette étude pour décrire l’évolution du savoir infirmier. Le modèle de réflexion structurée (MRS) de Johns (1995) a servi à l’élaboration d’entrevues semi-dirigées individuelles avant et après le cours de MI, afin de permettre l’identification du savoir infirmier selon un processus déductif. La méthode de codification de Miles et Huberman (2003) a ensuite favorisé un processus semi-inductif. Une analyse horizontale a finalement permis de repérer les récurrences ou les changements dans le savoir infirmier entre les entrevues de chaque participante ainsi qu’entre les participantes elles-mêmes. Des manifestations des dimensions du savoir infirmier telles que définies par Johns et influencées par Carper (1978) sont décrites, ainsi que l’évolution du savoir infirmier suite à la participation au cours de MI. Les thèmes qui ont découlé des entrevues sont : le développement d’un vocabulaire favorisant la communication dans l’équipe, la capacité d’aller au-delà des protocoles, une meilleure confiance en leurs capacités et l’élargissement d’une vision éthique qui comprend tous les acteurs de la communauté. Les retombées de l’étude se retrouvent au plan de la formation par la mise en valeur de la perspective infirmière dans le cours de MI et par l’évolution du savoir infirmier après avoir suivi ce cours. Sur le plan de la recherche, cette étude présente une nouvelle approche, pour de futures recherches, permettant d’évaluer la contribution d’un cours universitaire.Abstract : As the Ordre des infirmières et infirmiers du Québec (OIIQ) has created in 2011 a specialty, making it possible for nurses to develop their expertise in infection prevention and control (IPC). In order to become an IPC clinical nurse specialist, nurses must fulfil a graduate program, which includes a course in microbiology and infectious diseases (MID), among others. Until now, there has been no study evaluating the influence of this training or course on patterns of knowing in nursing for IPC nurses. The goal of this study was to determine the evolution of the patterns of knowing in nursing for IPC nurses who have completed an MID course as part of a graduate program in IPC. A qualitative descriptive evaluation made it possible to determine the evolution of the patterns of knowing. Johns’ model (1995) for structured reflection (MSR) which was used in semi-structured, individual interviews before and after an MID course, helped identify patterns of knowing through a deductive process. Furthermore, Miles and Huberman’s (2003) codification method ensured a semi-inductive process. A horizontal analysis allowed for the detection of recurrence or change in patterns of knowing between each participant’s interviews, as well as between participants. The illustration of the scope of the patterns of knowing in nursing, as defined by Johns and influenced by Carper (1978), as well as the evolution of the patterns of knowing after completing an MID course, were described. The topics that surfaced during the interviews were: the development of a vocabulary fostering team communication, the capacity to go beyond protocols, a greater confidence in their abilities, and the expansion of an ethical view that includes all stakeholders in the community. The benefits of the study are at the level of training and research. Training is represented by the development of nursing perspective in the MID courses and the development of nursing knowledge after completing a course in MID. Finally, towards the research, this has put forward a new approach to assess the contribution of a university course.
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Fournier, Nicolas. « Développement de méthodes optiques pour la mesure de champs cinématiques sur des structures ». Saint-Etienne, 1998. http://www.theses.fr/1998STET4022.
Texte intégralRésumé :
Ce document concerne le developpement de méthodes optiques de champ. Le but était la recherche de nouvelles applications de techniques de champ basées sur l'optique. Tout d'abord, une méthode de détection de défauts géométriques de forme de surface sur des pièces réfléchissantes a été mise au point. Cette application est purement industrielle et des études ont été menées sur des échantillons de type feuils de peinture automobile, pièces de carrosserie automobile, tôle brutes en sortie de laminoir ou vitrages. Un prototype industriel est actuellement a l'essai. La deuxième application concerne l'analyse de vibrations par une technique optique appelée espi qui permet de mesurer le déplacement hors plan d'un objet sous test. Elle a été effectuée au sein du groupe fibres optiques de l'université heriot watt d'edimbourg - ecosse. Un montage d'espi particulièrement original a été reconstruit avec lequel la vibration de plaques minces anisotropes a pu être analysee. La technique permet d'obtenir non seulement l'amplitude de vibration de l'objet sous test mais également la phase de vibration de tous les points par rapport a un point de référence. De plus, le couplage de ce dispositif a un vibrometre a fibre optiques permet d'étendre ses capacités. Les résultats obtenus dans le cadre de cette étude sont utilises pour la dernière application qui concerne la caractérisation mécanique des composites. Les rigidités de flexion des trois plaques en carbone/époxyde précédemment étudiées sont déterminées. Une approche mécanique originale permet d'utiliser directement les résultats expérimentaux afin de calculer les caractéristiques mécaniques des échantillons. Les rigidités de flexion des plaques déterminées à partir des champs de flèches mesures par la technique espi sont comparées à celles déterminées grâce a une technique appelée deflectometrie qui mesure les champs de pentes a la surface des échantillons. Une comparaison complète des deux techniques est réalisée.
24
« Shape recovery from reflection ». Chinese University of Hong Kong, 1996. http://library.cuhk.edu.hk/record=b5888866.
Texte intégralRésumé :
by Yingli Tian.Thesis (Ph.D.)--Chinese University of Hong Kong, 1996.
Includes bibliographical references (leaves 202-222).
Chapter 1 --- Introduction --- p.1
Chapter 1.1 --- Physics-Based Shape Recovery Techniques --- p.3
Chapter 1.2 --- Proposed Approaches to Shape Recovery in this Thesis --- p.9
Chapter 1.3 --- Thesis Outline --- p.13
Chapter 2 --- Camera Model in Color Vision --- p.15
Chapter 2.1 --- Introduction --- p.15
Chapter 2.2 --- Spectral Linearization --- p.17
Chapter 2.3 --- Image Balancing --- p.21
Chapter 2.4 --- Spectral Sensitivity --- p.24
Chapter 2.5 --- Color Clipping and Blooming --- p.24
Chapter 3 --- Extended Light Source Models --- p.27
Chapter 3.1 --- Introduction --- p.27
Chapter 3.2 --- A Spherical Light Model in 2D Coordinate System --- p.30
Chapter 3.2.1 --- Basic Photometric Function for Hybrid Surfaces under a Point Light Source --- p.32
Chapter 3.2.2 --- Photometric Function for Hybrid Surfaces under the Spher- ical Light Source --- p.34
Chapter 3.3 --- A Spherical Light Model in 3D Coordinate System --- p.36
Chapter 3.3.1 --- Radiance of the Spherical Light Source --- p.36
Chapter 3.3.2 --- Surface Brightness Illuminated by One Point of the Spher- ical Light Source --- p.38
Chapter 3.3.3 --- Surface Brightness Illuminated by the Spherical Light Source --- p.39
Chapter 3.3.4 --- Rotating the Source-Object Coordinate to the Camera- Object Coordinate --- p.41
Chapter 3.3.5 --- Surface Reflection Model --- p.44
Chapter 3.4 --- Rectangular Light Model in 3D Coordinate System --- p.45
Chapter 3.4.1 --- Radiance of a Rectangular Light Source --- p.45
Chapter 3.4.2 --- Surface Brightness Illuminated by One Point of the Rect- angular Light Source --- p.47
Chapter 3.4.3 --- Surface Brightness Illuminated by a Rectangular Light Source --- p.47
Chapter 4 --- Shape Recovery from Specular Reflection --- p.54
Chapter 4.1 --- Introduction --- p.54
Chapter 4.2 --- Theory of the First Method --- p.57
Chapter 4.2.1 --- Torrance-Sparrow Reflectance Model --- p.57
Chapter 4.2.2 --- Relationship Between Surface Shapes from Different Images --- p.60
Chapter 4.3 --- Theory of the Second Method --- p.65
Chapter 4.3.1 --- Getting the Depth of a Reference Point --- p.65
Chapter 4.3.2 --- Recovering the Depth and Normal of a Specular Point Near the Reference Point --- p.67
Chapter 4.3.3 --- Recovering Local Shape of the Object by Specular Reflection --- p.69
Chapter 4.4 --- Experimental Results and Discussions --- p.71
Chapter 4.4.1 --- Experimental System and Results of the First Method --- p.71
Chapter 4.4.2 --- Experimental System and Results of the Second Method --- p.76
Chapter 5 --- Shape Recovery from One Sequence of Color Images --- p.81
Chapter 5.1 --- Introduction --- p.81
Chapter 5.2 --- Temporal-color Space Analysis of Reflection --- p.84
Chapter 5.3 --- Estimation of Illuminant Color Ks --- p.88
Chapter 5.4 --- Estimation of the Color Vector of the Body-reflection Component Kl --- p.89
Chapter 5.5 --- Separating Specular and Body Reflection Components and Re- covering Surface Shape and Reflectance --- p.91
Chapter 5.6 --- Experiment Results and Discussions --- p.92
Chapter 5.6.1 --- Results with Interreflection --- p.93
Chapter 5.6.2 --- Results Without Interreflection --- p.93
Chapter 5.6.3 --- Simulation Results --- p.95
Chapter 5.7 --- Analysis of Various Factors on the Accuracy --- p.96
Chapter 5.7.1 --- Effects of Number of Samples --- p.96
Chapter 5.7.2 --- Effects of Noise --- p.99
Chapter 5.7.3 --- Effects of Object Size --- p.99
Chapter 5.7.4 --- Camera Optical Axis Not in Light Source Plane --- p.102
Chapter 5.7.5 --- Camera Optical Axis Not Passing Through Object Center --- p.105
Chapter 6 --- Shape Recovery from Two Sequences of Images --- p.107
Chapter 6.1 --- Introduction --- p.107
Chapter 6.2 --- Method for 3D Shape Recovery from Two Sequences of Images --- p.109
Chapter 6.3 --- Genetics-Based Method --- p.111
Chapter 6.4 --- Experimental Results and Discussions --- p.115
Chapter 6.4.1 --- Simulation Results --- p.115
Chapter 6.4.2 --- Real Experimental Results --- p.118
Chapter 7 --- Shape from Shading for Non-Lambertian Surfaces --- p.120
Chapter 7.1 --- Introduction --- p.120
Chapter 7.2 --- Reflectance Map for Non-Lambertian Color Surfaces --- p.123
Chapter 7.3 --- Recovering Non-Lambertian Surface Shape from One Color Image --- p.127
Chapter 7.3.1 --- Segmenting Hybrid Areas from Diffuse Areas Using Hue Information --- p.127
Chapter 7.3.2 --- Calculating Intensities of Specular and Diffuse Compo- nents on Hybrid Areas --- p.128
Chapter 7.3.3 --- Recovering Shape from Shading --- p.129
Chapter 7.4 --- Experimental Results and Discussions --- p.131
Chapter 7.4.1 --- Simulation Results --- p.131
Chapter 7.4.2 --- Real Experimental Results --- p.136
Chapter 8 --- Shape from Shading under Multiple Extended Light Sources --- p.142
Chapter 8.1 --- Introduction --- p.142
Chapter 8.2 --- Reflectance Map for Lambertian Surface Under Multiple Rectan- gular Light Sources --- p.144
Chapter 8.3 --- Recovering Surface Shape Under Multiple Rectangular Light Sources --- p.148
Chapter 8.4 --- Experimental Results and Discussions --- p.150
Chapter 8.4.1 --- Synthetic Image Results --- p.150
Chapter 8.4.2 --- Real Image Results --- p.152
Chapter 9 --- Shape from Shading in Unknown Environments by Neural Net- works --- p.167
Chapter 9.1 --- Introduction --- p.167
Chapter 9.2 --- Shape Estimation --- p.169
Chapter 9.2.1 --- Shape Recovery Problem under Multiple Rectangular Ex- tended Light Sources --- p.169
Chapter 9.2.2 --- Forward Network Representation of Surface Normals --- p.170
Chapter 9.2.3 --- Shape Estimation --- p.174
Chapter 9.3 --- Application of the Neural Network in Shape Recovery --- p.174
Chapter 9.3.1 --- Structure of the Neural Network --- p.174
Chapter 9.3.2 --- Normalization of the Input and Output Patterns --- p.175
Chapter 9.4 --- Experimental Results and Discussions --- p.178
Chapter 9.4.1 --- Results for Lambertian Surface under One Rectangular Light --- p.178
Chapter 9.4.2 --- Results for Lambertian Surface under Four Rectangular Light Sources --- p.180
Chapter 9.4.3 --- Results for Hybrid Surface under One Rectangular Light Sources --- p.190
Chapter 9.4.4 --- Discussions --- p.190
Chapter 10 --- Summary and Conclusions --- p.191
Chapter 10.1 --- Summary Results and Contributions --- p.192
Chapter 10.2 --- Directions of Future Research --- p.199
Bibliography --- p.202
25
Chen, Yu-Lin, et 陳鈺淋. « A Study on Pattern Development of Infinity Mirror Reflection which used by LEDs ». Thesis, 2015. http://ndltd.ncl.edu.tw/handle/55911872939243842179.
Texte intégralRésumé :
碩士國立雲林科技大學
數位媒體設計系
103
In the modern age of advanced technology, digital is used in the design and art widely. A lot of Media will be developed. Many established Medium are also keep improving. The Light-Emitting Diode is one of established Medium which growing persistent. LED could only be used on a large of block as low-intensity, monochromatic in 20 years ago. But we can use it in lighting as high brightness, full-color in common. LED is not only safety, high life and lightweight, but also safe electricity. So many artists choose LED as media for artistic creation. Recently, more and more designers use LED and mirror in art work. Infinity Mirror Reflection with LED become a new kind of artistic expression patterns indubitably. This study explore the literatures to understand the theory of infinite reflection, development and characteristics of LEDs, features and materials of shape. And classification the shape of Infinity Mirror Reflection by LEDs for the possibility of the shpae development. The study experiment on different linear arrangement of LEDs in the three-dimensional space. To extend different shape by different LEDs linear arrangement in the three-dimensional space and create different infinite reflections. This study record the results by photography. The study discusses the composition of Infinity Mirror Reflection which used by LEDs and sort the principle and the visual expression. Infinity Mirror Reflection which used by LEDs can be divided LED kaleidoscope and LED unlimited mirror. LED unlimited mirror use two sides of the parallel lens produce an infinite reflections. It also more common way to shape and have more use in real life. Each infinite reflection shape are all purpose to perform the "three-dimensional". According to results of experimental, female designer is more sensitive than male designer on degree of change and reflection. And the people who comprehend an infinite reflection is also receptive and responsive. In addition to considering surfaces, brightness of LEDs, the arrangement is the key of the shape of Infinity Mirror Reflection which used by LEDs. It can be extended to art technology, multimedia design or a public space art, outdoor media design, exhibition space, exhibition design and interior design. More applied of Infinity Mirror Reflection which used by LEDs will serve as basis for the development of new forms and create the new visual enjoyment into life.
26
Cabaço, João Salgado. « Effect of Ar implantation energy and angle on the reflection pattern of nitrides ». Master's thesis, 2019. https://hdl.handle.net/10216/123155.
Texte intégral
27
Cabaço, João Salgado. « Effect of Ar implantation energy and angle on the reflection pattern of nitrides ». Dissertação, 2019. https://hdl.handle.net/10216/123155.
Texte intégral
28
Yeh, Wei-horng, et 葉韋宏. « A Unique-Bit-Pattern-Based Indexing Strategy for Image Rotation and Reflection in Image Databases ». Thesis, 2008. http://ndltd.ncl.edu.tw/handle/3jrb48.
Texte intégralRésumé :
博士國立中山大學
資訊工程學系研究所
96
A symbolic image database system is a system in which a large amount of image data and their related information are represented by both symbolic images and physical images. Spatial relationships are important issues for similarity-based retrieval in many image database applications. How to perceive spatial relationships among the components in a symbolic image is an important criterion to find a match between the symbolic image of the scene object and the one being store as a modal in the symbolic image database. With the popularity of digital cameras and the related image processing software, a sequence of images are often rotated or flipped. That is, those images are transformed in the rotation orientation or the reflection direction. A robust spatial similarity framework should be able to recognize image variants such as translation, scaling, rotation, and arbitrary variants. Current retrieval by spatial similarity algorithms can be classified into symbolic projection methods, geometric methods, and graph-matching methods. Symbolic projection could preserve the useful spatial information of objects, such as width, height, and location. However, many iconic indexing strategies based on symbolic projection are sensitive to rotation or reflection. Therefore, these strategies may miss the qualified images, when the query is issued in the orientation different from the orientation of the database images. To solve this problem, researchers derived the rule of the change of spatial relationships in image transformation, and proposed a function to map the spatial relationship to its related transformed one. However, this mapping consists of several conditional statements, which is time-consuming. Thus, in this dissertation, first, we classify the mapping into three cases and carefully assign a 16-bit unique bit pattern to each spatial relationship. Based on the assignment, we can easily do the mapping through our proposed bit operation, intra-exchange, which is a CPU operation and needs only the complexity of O(1). Moreover, we propose an efficient iconic index strategy, called Unique Bit Pattern matrix strategy (UBP matrix strategy) to record the spatial information. In this way, when doing similarity retrieval, we do not need to reconstruct the original image from the UBP matrix in order to obtain the indexes of the rotated and flipped image. Conversely, we can directly derive the index of the rotated or flipped image from the index of the original one through bit operations and the matrix manipulation. Thus, our proposed strategy can do similarity retrieval without missing the qualified database images. In our performance study, first, we analyze the time complexity of the similarity retrieval process of our proposed strategy. Then, the efficiency of our proposed strategy according to the simulation results is presented. We show that our strategy outperforms those mapping strategies based on different number of objects in an image. According to the different number of objects in an image, the percentage of improvement is between 13.64% and 53.23%.
29
Waddington, Christopher. « Adaptive Fringe Pattern Projection Techniques for Imgae Saturation Avoidance in 3D Surface Measurement ». Thesis, 2010. http://hdl.handle.net/10012/5616.
Texte intégralRésumé :
Fringe-pattern projection (FPP) techniques are commonly used for surface-shape measurement in a wide range of applications including object and scene modeling, part inspection, and reverse engineering. Periodic intensity fringe patterns with a specific amplitude are projected by the projector onto an object and a camera captures images of the fringe patterns, which appear distorted by the object surface from the perspective of the camera. The images are then used to compute the height or depth of the object at each pixel.
One of the problems with FPP is that camera sensor saturation may occur if there is a large change in ambient lighting or a large range in surface reflectivity when measuring object surfaces. Camera sensor saturation occurs when the reflected intensity exceeds the maximum quantization level of the camera. A low SNR occurs when there is a low intensity modulation of the fringe pattern compared to the amount of noise in the image. Camera sensor saturation and low SNR can result in significant measurement error. Careful selection of the camera aperture or exposure time can reduce the error due to camera sensor saturation or low SNR. However, this is difficult to perform automatically, which may be necessary when measuring objects in uncontrolled environments where the lighting may change and objects have different surface reflectivity.
This research presents three methods to avoid camera sensor saturation when measuring surfaces subject to changes in ambient lighting and objects with a large range in reflectivity. All these methods use the same novel approach of lowering the maximum input gray level (MIGL) to the projector for saturation avoidance. This approach avoids saturation by lowering the reflected intensity so that formerly saturated intensities can be captured by the camera.
The first method of saturation avoidance seeks a trade-off between robustness to intensity saturation and low SNR. Measurements of a flat white plate at different MIGL resulted in a trade-off MIGL that yielded the highest accuracy for a single adjustment of MIGL that is uniform within and across the projected images.
The second method used several sets of images, taken at constant steps of MIGL, and combined the images pixel-by-pixel into a single set of composite images, by selecting the highest unsaturated intensities at each pixel. White plate measurements using this method had comparable accuracy to the first method but required more images to form the composite image. Measurement of a checkerboard showed a higher accuracy than the first method since the second method maintains a higher SNR when the object has a large range of reflectivity.
The last method also used composite images where the step size was determined dynamically, based on the estimated percentage of pixels that would become unsaturated at the next step. In measurements of a flat white plate and a checkerboard the dynamic step size was found to add flexibility to the measurement system compared to the constant steps using the second method. Using dynamic steps, the measurement system was able to measure objects with either a low or high range of reflectivity with high accuracy and without manually adjusting the step size. This permits fully automated measurement of unknown objects with variable reflectivity in unstructured environments with changing lighting conditions.
The methods can be used for measurement in uncontrolled environments, for specular surfaces, and those with a large range of reflectivity or luminance. This would allow a wider range of measurement applications using FPP techniques.
30
Sullivan, Gregory T. « Advanced Programming Language Features for Executable Design Patterns "Better Patterns Through Reflection ». 2002. http://hdl.handle.net/1721.1/6686.
Texte intégralRésumé :
The Design Patterns book [GOF95] presents 24 time-tested patterns that consistently appear in well-designed software systems. Each pattern is presented with a description of the design problem the pattern addresses, as well as sample implementation code and design considerations. This paper explores how the patterns from the "Gang of Four'', or "GOF'' book, as it is often called, appear when similar problems are addressed using a dynamic, higher-order, object-oriented programming language. Some of the patterns disappear -- that is, they are supported directly by language features, some patterns are simpler or have a different focus, and some are essentially unchanged.
31
PATARA, FULVIO. « Multi-level meta-modeling architectures applied to eHealth ». Doctoral thesis, 2016. http://hdl.handle.net/2158/1041924.
Texte intégralRésumé :
Over the last decade, a growing digital universe of unstructured or semi- structured human-sourced information, structured process-mediated data, and well-structured machine-generated data, encourages the adoption of innovative forms of data modeling and information processing to enable enhanced insight, decision making, and process automation applied to a variety of different contexts. Healthcare comprises a notable domain of interest, where the availability of a large amount of information can be exploited to take relevant and tangible benefits in terms of efficiency of the care process, improved out- comes and reduced health system costs. However, due to the complex nature of clinical data, a number of challenges needs to be faced, mainly related on how data characterized by volume, variety, variability, velocity, and veracity can be effectively and efficiently modeled, and how these data can be exploited for increasing the domain knowledge and supporting decision-making processes.
The aim of this dissertation is to describe the crucial role played by soft- ware architectures in order to overcome challenges posed by the healthcare context. Specifically, this dissertation addresses the development and applicability of multi-level meta-modeling architectures to various scenarios of eHealth, where flexibility and changeability represent primary requirements. Meta-modeling principles are concretely exploited in the implementation of an adaptable patient-centric Electronic Health Record (EHR) system to face a number of challenging requirements, including: adaptability to different specialities and organizational contexts; run-time configurability by domain experts; interoperability of heterogeneous data produced by various sources and accessed by various actors; applicability of guideline recommendations for evaluating clinical practice compliance; applicability of Activity Recognition techniques for monitoring and classifying human activities in pervasive intelligent environments.
32
Hsu, Yu-Shih, et 許祐實. « Application of Image Processing Technologies to the Compensation of Laser Optical Reflection Patterns ». Thesis, 2015. http://ndltd.ncl.edu.tw/handle/19890069448409645970.
Texte intégral
33
Hwang, Yi-Dee, et 黃奕棣. « 3-D object profilometry using complementary illumination pattern for different reflective surface ». Thesis, 2017. http://ndltd.ncl.edu.tw/handle/7q3ced.
Texte intégralRésumé :
碩士國立臺北科技大學
自動化科技研究所
105
Recovering the object with large range reflectivity (LRR) is hard for any optical 3D modeling system. In this paper, we propose a novel reconstruction technique based on the structured light system with phase-shifting fringe projection algorithm to overcome the problem derived from the LRR object. During the reconstruction process, we found that the low reflectivity point needs the high illumination projection and the high reflectivity point needs the low illumination projection. In order to find the suitable pattern for each point, we adjust projector light intensity to project patterns from the highest illumination level to the lowest level, and then ingrate the point with the largest signal-to-noise ratio from the entire surface of the object for 3D modeling. More important, this technique not only completely reconstructs the object with LRR but also increase the ambient resistance in the system. Finally, the experimental results show the proposed method can robustly recover the object with large surface reflectivity variations.
34
Althammer, Egbert [Verfasser]. « Reflection patterns in the context of object and component technology / vorgelegt von Egbert Althammer ». 2002. http://d-nb.info/964242834/34.
Texte intégral
35
Ko, Chih-Hsiang, et 柯智祥. « Novel Dual-Band Pattern Reconfigurable Reflector Antennas Using Switching Frequency Selective Surfaces ». Thesis, 2008. http://ndltd.ncl.edu.tw/handle/23325456335805321137.
Texte intégralRésumé :
碩士國立交通大學
電信工程系所
97
With the development of the wireless communication, more and more devices share the limited bandwidth for communication. Therefore, how to reduce the interference from other devices and environment and use the limited bandwidth efficiently is one of the important subjects. A smart antenna which can change radiation patterns and focus the patterns is a good candidate to solve those problems. In this thesis, a novel dual-band smart antenna is developed. By the switching frequency selective surface, the principle of a right angle corner reflector antenna, and the operation of switches, three dual-band pattern reconfigurable antennas are investigated. The operating frequencies in our design are 2.45 GHz and 5.25 GHz. Through combinations of switches on reflecting walls, multiple radiation patterns can be obtained. Each reflecting wall of the first proposed pattern reconfigurable antenna operates only at one frequency; therefore, Two-layer reflecting walls are needed here. However, the volume of the completed antenna is about one-wavelength of 2.45 GHz square due to the principle of the corner reflector antenna. In the second proposed antenna, a reflecting wall can operate at two frequencies. As a result, the size of the antenna can be reduced, and the amount of switches can be decreased too. Finally, a dual-band pattern reconfigurable antenna with a simpler structure such as a rectangular loop is developed without the damages to the original properties belonging to the second antenna. Since omni-directional and directional patterns are the most important in application, we mostly focus on those two patterns in our design.
36
Chen, Yu-hsuan, et 陳毓璇. « Analysis of Light Pattern Uniformity and Reflector Design for Multi-chips LED ». Thesis, 2015. http://ndltd.ncl.edu.tw/handle/295p84.
Texte intégralRésumé :
碩士逢甲大學
光電學系
103
The focus of this study is to discuss the effect of the uniformity of light pattern by change the space between each chip, the concentration of phosphor and the shape of reflector. And find the optimal threshold; define the various parameters to achieve the uniformity of conditions and thresholds. First, we use the ASAP to build the phosphor model and use this model for subsequent analysis. Second, we actually encapsulated the LED light source and fabrication the phosphor slices and reflector, complete the experimental architecture. Then define the calculation of uniformity and which point to take on the light pattern, to identify the most appropriate method of this study. Finally, analysis of light pattern uniformity by each variable result, find out the threshold successfully.
37
Wu, Fa-Chen, et 吳法震. « A study of the effect of pattern styles on an inner scattering reflector ». Thesis, 2004. http://ndltd.ncl.edu.tw/handle/55615972163958866385.
Texte intégralRésumé :
碩士逢甲大學
機械工程學所
92
Inner scattering reflectors have now been widely applied to the field for reflective mode of liquid crystal displays (LCDs). The pattern styles of the inner scattering reflectors play an important role on enhancing reflective performance of LCDs, such as: widening viewing angle, controlling directional brightness, and lowering disturbing glare of reflective LCDs. Very few publications in the past were related to the effect of pattern styles on inner scattering reflectors. Through lithography process and measurement measured by Conoscope, the design of product was firstly validated by experiment. The measured result of scattering effects of the product was then used for comparison with the simulation by the software “Trace Pro”. Finally, the effect of geometrical parameters (pattern styles) on the reflective performance of inner scattering reflectors has been systematrically studied and the conclusions of the present study are summarized as follows: 1. When both the surface area and the inclined angle of pattern styles are fixed, the effect of the rotation angle of regular hexagon inserted bump on the reflective performance is not obvious. Under the same condition, a more uniformly reflective performance can be achieved when the rotation angle is below 18�a for straight pentagon, and 15�a for straight quadrangle. On the other hand, a more uniformly reflective performance can be found when the rotation angle is between 15�a and 45�afor equilateral triangle. However, a better enhancing reflective performance for 12 side shape than that for equilateral triangle occurs only when its inclined angle is equal to 10°, and the uniformly reflective performance of 12 side shape is less then all the other shaped bump. 2. When the surface area is fixed while the thickness of pattern styles is varied (The inverted angle is fixed as 10°or varied dependently with its thickness, namely 0.1、 0.2、 0.3、 0.4µm) , the thicker of inserted bumps, the more uniformly reflective performance can be produced from simulation. Among them, straight quadrangle is the relatively best one.
38
Rosa, Francisca Isabel Esteves da. « The white UX community : a reflection on dark patterns and a debate about user experience designer ». Master's thesis, 2020. http://hdl.handle.net/10400.14/34275.
Texte intégralRésumé :
This project aims to raise awareness of the relevance of the User Experience Design (UXD) profession nowadays and foster discussion around the values and techniques in this field. Society is becoming ever more dependent on digital platforms, and therefore computer interactions seem to be the cornerstone of the present technological era. Although Human-Computer Interaction (HCI) has a long history of usability methods, human values and ethical principles are at stake if we keep using traditional design thinking. After connecting the concepts and theories, a reflexive framework will be outlined that incites designers to discuss and share ideas about the impact of technology in society. This intention will be translated into an online platform where designers can exchange arguments with each other and share good practices. Harry Brignull’s study about Dark Pattern – nudges used in the online environment that persuade users into doing something they did not intend – will serve as the motto for discussion. In addition to aiming to build a unified vision of what the role of designers needs to be in order to play along with all the resolutions derived from disruptive technologies, this project also aims at reducing the potential gap between scholars and practitioners and to create a safe place for people to learn and obtain trustworthy knowledge.
39
WEN-QINGSONG et 宋文卿. « On the Patterns of Trade Secrets Leakage and Protection Strategies- A Reflection upon Some Criminal Cases of Taiwan ». Thesis, 2019. http://ndltd.ncl.edu.tw/handle/uuhhtd.
Texte intégralRésumé :
碩士國立成功大學
財務金融研究所碩士在職專班
107
This paper uses action research methods and case study methods of qualitative research methods to collect data. First, the author considers judicial unpublished surveys and research ethics, use the published judgments from the court's official website for cases, and use these cases incorporate criminal thefts of business secrets. Second, the author discusses the internal control methods of trade secrets based on the key concepts of the COSO Internal Control. Third, the author summarizes the needs of the judicial organs to investigate cases, as the basic information that victims should prepare when they report to the judicial organs, so that the judicial organs can quickly carry out investigations, prosecutions and trials.
40
Yan, Jia-Wei, et 顏嘉緯. « Enhancement of Lumination and on Modification of Light Pattern of InGaN Light-emitting Diodes by Metallic Reflector ». Thesis, 2008. http://ndltd.ncl.edu.tw/handle/93933115771644015827.
Texte intégralRésumé :
碩士國立中央大學
光電科學研究所
96
In this thesis, we study the surface plasmon effect on enhancement of lumination and on modification of light pattern of InGaN Light-emitting diodes (LEDs), and we discuss the effect of indium tin oxide (ITO) between active layer and metallic reflector on enhancing the coupling efficiency of surface plasmon. In the experiment, we design and fabricate silver film (t=15~100nm) or silver gratings with periodic structures (0.2~8?m) onto the InGaN light emitter and photoluminescence (PL) and angle-resolved photoluminescence (ARPL) techniques are used to record the spectra of different structures. We also characterize another type of reflector, inserting ITO between InGaN and Ag film or Ag gratings. From our experimental result, ITO (80nm)/Ag(50nm) film and ITO (80nm)/Ag(50nm) with grating period of 5?m exhibit significant enhancement about 44.8% and 52.5%, respectively. Furthermore, the light pattern of InGaN light emitter will converge toward the normal direction by increasing the thickness of silver.
41
Tseng, Ping-Chen, et 曾斌誠. « Nanosphere-patterned frontal surface textures for combined anti-reflection and light trapping effects in thin-film solar cells ». Thesis, 2012. http://ndltd.ncl.edu.tw/handle/86390039410836171633.
Texte intégralRésumé :
博士國立交通大學
光電工程學系
100
In the past few years, thin film solar cells have emerged as the possible candidate to be adopted in the major solar cell market owing to the dramatic reduce of cost from material usage. However, the cell efficiency is too low to meet the market demand of below 1$/W. The thin film solar cells are usually a few hundred nano-meters thick and therefore the optical loss is one of the major losses in the thin films. Antireflection and light trapping are both needed to enhance the cell efficiency by increasing the photon absorption. Recent researches have demonstrated separate engineering processes to provide both mechanisms. Conventionally, antireflection layers are set at the front surface and the light trapping structures are set in the back of the cell. In this thesis, we innovate to combine antireflection and light trapping together by putting antireflective nanostructures at the front surface of thin film solar cells through a simple process. The antireflective nanostructures that provide both mechanisms attributed from the taper shape of each groove and horizontal arrangement which scatters the incident light into the cell. These nanostructures also sufficiently couple the angular incident wave to the cell and hence enhance the angular absorption of the cell. We utilized colloidal lithography for large area nanostructure fabrication on various substrates (ITO, silicon nitride) and implemented the nanostructure in various types of thin film solar cells (organics, amorphous silicon). We systematically studied the antireflective and scattering mechanisms of these nanostructures through rigorous couple wave analysis (RCWA) simulation and experimental measurement. An angle-resolved reflective spectroscopy system was setup to confirm the omnidirectional antireflective properties of the nanostructures. We believe these results can directly impact on the attainment of scalable renewable energy from thin-film solar cells.
42
Terech, Nicholas. « Fracture patterns, lineaments and seismic reflection data Integration for fault mapping in the Appalachian Basin of east-central New York State / ». 2006. http://proquest.umi.com/pqdweb?did=1163240461&sid=4&Fmt=2&clientId=39334&RQT=309&VName=PQD.
Texte intégralRésumé :
Thesis (M.S.)--State University of New York at Buffalo, 2006.Title from PDF title page (viewed Dec. 1, 2006). Available through UMI ProQuest Digital Dissertations. Thesis adviser: Jacobi, Robert D. Includes bibliographical references.
43
Chen, Kuan-Ting, et 陳冠廷. « A Novel Antenna Feed-array of Reflector Antenna for SAR System with Switching Beams and Reconfigurable Patterns ». Thesis, 2017. http://ndltd.ncl.edu.tw/handle/tnqekj.
Texte intégralRésumé :
碩士國立交通大學
電信工程研究所
105
In this thesis, an X-band antenna feed-array of reflector antenna for satellite SAR system is presented. After the construction of the satellite and the size of the reflector are confirmed, the dual polarizations feed-array, which composes 6 elements, is designed to fit the reflector. With two adjacent feed elements as a beam of feed, the payload antenna can be reached five beams in different directions. The multiple feeds system in conjunction with the distributed PA modules, not only performs the spatial power combining for radar detection, but also provides the beam diversity. Flexible and complex imaging mode operations (normal Stripmap mode, broad Stripmap mode, ScanSAR modes and Spotlight mode) become realistic with these multiple beams having various directions and various widths. The feed unit is in the form of horn antenna. By placing a cross structure at the opening of the horn antenna, the goal of the specified beamwidth is reached with a smaller aperture, thereby reducing the spacing of adjacent feed elements as feed combinations to make it easier to shape the feed fields. The biased angle, beamwidth and sweep angle of the payload antenna are analyzed by the designed feed-array. In addition, the T/R isolation of system is estimated by its actual measurement results and related components.
44
Modise, Leepo. « Reflections on the well-being levels of professionals in rural and semi-rural areas : faith theoretical perspective ». Thesis, 2009. http://hdl.handle.net/10500/3267.
Texte intégralRésumé :
This study evolved from an involvement with professional people in a rural and semi-rural environment thereby taking into account the role which the Employee Assistance Programmes (EAP) plays in their professional context of work. Two underlying factors motivate the study. Firstly, that professional needs and capacities of faith, belief and spirituality are not been catered for in the EAPs. Secondly, that an African-Christian wholesome sense making approach provides more satisfactory answers to the lack of faith, belief and spirituality in the EAPs than the modern versions of the classic dualist and tripartite anthropological schemes of soul and body or soul, spirit and body. Furthermore, a wholesome sense making approach supports and tackles people’s wellness and well-being levels more satisfactorily than the classic dualist and tripartite views. An outline of an EAP in which faith leaders and consultants and their programmes are integrated and which contributes to the enhancing of well-being levels and performance management of professional people is described.
The main focus of the study revolves around wholesome foursome experiential patterns in which alternating emphases of faith experience are acted out in the sense of ‘I believe God, I believe myself, I believe my human neighbours and I believe the physical natural environment’. This four side pattern of faith experience functions as an important theoretical assumption in the study. A second theoretical assumption has to do with the foursome processual framework of God’s grand acts of creation, reconciliation (redemption= cross and resurrection of Jesus), renewal (ongoing renewal of everything) and consummation and fulfilment towards the end (aim and goal) in which we as people and the physical natural environment are intrinsically and continuously involved. A third theoretical assumption revolves around the foursome experiential professional performance pattern of ‘I perform for God, I perform for myself, I perform for my human neighbours and I perform for the physical natural environment’. The foursome experiential patterns are also set as evaluative pointer patterns around which the empirical investigative part is constructed.Philosophy & Systematic Theology
D.Th. (Systematic Theology)
45
Govender, Saravani. « The influence of participatory development on the communication patterns of the parachute packing section of the SANDF ». Diss., 2000. http://hdl.handle.net/10500/16870.
Texte intégralRésumé :
The study was undertaken to ascertain whether participatory development (PD and) by
implication, the Person Centred Approach (PCA) had an impact on change in the
communication patterns in the parachute packing section in the SANDF.
The study was conducted in a military setting where hierarchical authoritarian structures
exist. PCA and PD are used as theoretical frameworks for the study which resulted in
changes in the communication patterns at the section. Change occured at two levels
viz:
Changes in communication amongst the participants which led to teamwork,
cooperation and the avoidance of conflict.
Changes in communication between management (the Officer Commanding)
and the parachute packing section which lead to regular contact with the
participants to address their problems.
The study further highlighted the importance of learning from the community in order to
avoid misinterpretation which could lead to conflict and dissatisfactionM. A. (Social Science (Mental Health))
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Ayyavoo, Gabriel Roman. « Using Online Pedagogy to Explore Student Experiences of Science-technology-society-environment (STSE) Issues in a Secondary Science Classroom ». Thesis, 2013. http://hdl.handle.net/1807/35769.
Texte intégralRésumé :
With the proliferation of 21st century educational technologies, science teaching and learning with digitally acclimatized learners in secondary science education can be realized through an online Science-Technology-Society-Environment (STSE)-based issues approach. STSE-based programs can be interpreted as the exploration of socially-embedded initiatives in science (e.g., use of genetically modified foods) to promote the development of critical cognitive processes and to empower learners with responsible decision-making skills.
This dissertation presents a case study examining the online environment of a grade 11 physics class in an all-girls’ school, and the outcomes from those online discursive opportunities with STSE materials. The limited in-class discussion opportunities are often perceived as low-quality discussions in traditional classrooms because they originate from an inadequate introduction and facilitation of socially relevant issues in science programs. Hence, this research suggests that the science curriculum should be inclusive of STSE-based issue discussions. This study also examines the nature of students’ online discourse and, their perceived benefits and challenges of learning about STSE-based issues through an online environment. Analysis of interviews, offline classroom events and online threaded discussion transcripts draws from the theoretical foundations of critical reflective thinking delineated in the Practical Inquiry (P.I.) Model. The PI model of Cognitive Presence is situated within the Community of Inquiry framework,encompassing two other core elements, Teacher Presence and Social Presence. In studying Cognitive Presence, the online STSE-based discourses were examined according to the four phases of the P.I. Model. The online discussions were measured at macro-levels to reveal patterns in student STSE-based discussions and content analysis of threaded discussions. These analyses indicated that 87% of the students participated in higher quality STSE-based discussions via an online forum as compared to in-class. The micro-level analysis revealed students to attain higher cognitive interactions with STSE issues. Sixteen percent of the students’ threaded postings were identified in the Resolution Phase 4 when the teacher intervened with a focused teaching strategy. This research provides a significant theoretical and pedagogical contribution to blended approach to STSE-based secondary science education. It presents a framework for teachers to facilitate students’ online discussions and to support learners in exploring STSE-based topics.