Dissertations / Theses on the topic 'Template'
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Guenther, Marco. "Effizient Programmieren mit der C++ Standard Template Library." Universitätsbibliothek Chemnitz, 2003. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200300381.
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Angold, Alan. "Ownership Masks, Evolving Views and Cooperative Templates in Template Tracking." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1011.
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A template tracker is a tracker based on matching a pre-initialised view of an object with the object's view in an image sequence. Using an error function, the intensity difference between the template view and the templated region in the image is measured. This error measure is used as the basis for a template alignment algorithm that will adjust the template's pose to more accurately register the template view with the view of the object in the image.
Some significant problems present themselves with this simple tracker. Extraneous, or non-object, pixels within the template boundaries can cause bias in the registration of the template. Partial occlusions of the object's view in the image can also cause serious bias in the template's pose. Beyond simple occlusions there are transits of occlusions across an object. Occlusion transits are significant because over time they can occlude the entire object in an incremental fashion. If initially the template view is not completely known this kind of occlusion can easily cause a total tracking failure for an object.
In this thesis three enhancements of the basic template tracker are proposed: Ownership Masks, Cooperative Templates, and Evolving Views. Ownership Masks are aimed at eliminating the extraneous pixels from the template view. Cooperative templates are used to separate the intensity probabilities when more than one template covers a pixel. Building upon both Ownership Masks and Cooperative Templates, Evolving Views update the template views when occlusion transits are a problem.
With these enhancements we have been able to increase the accuracy of tracking objects where large portions of a template contain background pixels. Also occlusions and some types of unocclusions can be detected and discriminated. Finally, some failures in the basic tracker due to occlusion transits have been overcome.
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Dang, Darren Phi Bang. "Template based gesture recognition." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/41404.
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.Includes bibliographical references (p. 65-66).
by Darren PHi Bang Dang.
M.S.
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Yuan, Heng. "The template container database." Diss., Restricted to subscribing institutions, 2009. http://proquest.umi.com/pqdweb?did=1973896521&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
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West, Geoffrey Michael Jonathan. "Template based prediction : using neural networks and graph templates to predict nuclear magnetic resonance shifts." Thesis, Staffordshire University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362057.
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Wendland, Karsten [Verfasser]. "Der Template-Zyklus : Web-Templates im Spannungsfeld von schöpferischem Gestalten und einschränkender Zumutung / Karsten Wendland." Aachen : Shaker, 2006. http://d-nb.info/117053595X/34.
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Serce, Hakan. "Facial Feature Extraction Using Deformable Templates." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1224674/index.pdf.
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The purpose of this study is to develop an automatic facial feature extraction system, which is able to identify the detailed shape of eyes, eyebrows and mouth from facial images. The developed system not only extracts the location information of the features, but also estimates the parameters pertaining the contours and parts of the features using parametric deformable templates approach. In order to extract facial features, deformable models for each of eye, eyebrow, and mouth are developed. The development steps of the geometry, imaging model and matching algorithms, and energy functions for each of these templates are presented in detail, along with the important implementation issues.
In addition, an eigenfaces based multi-scale face detection algorithm which incorporates standard facial proportions is implemented, so that when a face is detected the rough search regions for the facial features are readily available.
The developed system is tested on JAFFE (Japanese Females Facial Expression Database), Yale Faces, and ORL (Olivetti Research Laboratory) face image databases. The performance of each deformable templates, and the face detection algorithm are discussed separately.
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Steinhart, Martin. "Nanoröhrchen durch Benetzung poröser Template." [S.l.] : [s.n.], 2003. http://archiv.ub.uni-marburg.de/diss/z2003/0123/.
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Lu, Yun. "Mapping Template Semantics to SMV." Thesis, University of Waterloo, 2004. http://hdl.handle.net/10012/1205.
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Template semantics is a template-based approach to describing the semantics of model-based notations, where a pre-defined template captures the notations' common semantics, and parameters specify the notations' distinct semantics. In this thesis, we investigate using template semantics to parameterize the translation from a model-based notation to the input language of the SMV family of model checkers. We describe a fully automated translator that takes as input a specification written in template semantics syntax, and a set of template parameters, encoding the specification's semantics, and generates an SMV model of the specification. The result is a parameterized technique for model checking specifications written in a variety of notations. Our work also shows how to represent complex composition operators, such as rendezvous synchronization, in the SMV language, in which there is no matching language construct.
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Tang, Wei-pai. "Schwarz splitting and template operators." Stanford, CA : Dept. of Computer Science, Stanford University, 1987. http://doi.library.cmu.edu/10.1184/OCLC/19643650.
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Thesis (Ph. D.)--Stanford University, 1987."June 1987." "Also numbered Classic-87-03"--Cover. "This research was supported by NASA Ames Consortium Agreement NASA NCA2-150 and Office of Naval Research Contracts N00014-86-K-0565, N00014-82-K-0335, N00014-75-C-1132"--P. vi. Includes bibliographical references (p. 125-129).
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Schmidt, Michael. "Template-basierte Klassifikation planarer Gesten." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-147370.
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Pervasion of mobile devices led to a growing interest in touch-based interactions. However, multi-touch input is still restricted to direct manipulations. In current applications, gestural commands - if used at all - are only exploiting single-touch. The underlying motive for the work at hand is the conviction that a realization of advanced interaction techniques requires handy tools for supporting their interpretation. Barriers for own implementations of procedures are dismantled by providing proof of concept regarding manifold interactions, therefore, making benefits calculable to developers. Within this thesis, a recognition routine for planar, symbolic gestures is developed that can be trained by specifications of templates and does not imply restrictions to the versatility of input. To provide a flexible tool, the interpretation of a gesture is independent of its natural variances, i.e., translation, scale, rotation, and speed. Additionally, the essential number of specified templates per class is required to be small and classifications are subject to real-time criteria common in the context of typical user interactions. The gesture recognizer is based on the integration of a nearest neighbor approach into a Bayesian classification method. Gestures are split into meaningful, elementary tokens to retrieve a set of local features that are merged by a sensor fusion process to form a global maximum-likelihood representation. Flexibility and high accuracy of the approach is empirically proven in thorough tests. Retaining all requirements, the method is extended to support the prediction of partially entered gestures. Besides more efficient input, the possible specification of direct manipulation interactions by templates is beneficial. Suitability for practical use of all provided concepts is demonstrated on the basis of two applications developed for this purpose and providing versatile options of multi-finger input. In addition to a trainable recognizer for domain-independent sketches, a multi-touch text input system is created and tested with users. It is established that multi-touch input is utilized in sketching if it is available as an alternative. Furthermore, a constructed multi-touch gesture alphabet allows for more efficient text input in comparison to its single-touch pendant. The concepts presented in this work can be of equal benefit to UI designers, usability experts, and developers of feedforward-mechanisms for dynamic training methods of gestural interactions. Likewise, a decomposition of input into tokens and its interpretation by a maximum-likelihood matching with templates is transferable to other application areas as the offline recognition of symbolsObwohl berührungsbasierte Interaktionen mit dem Aufkommen mobiler Geräte zunehmend Verbreitung fanden, beschränken sich Multi-Touch Eingaben größtenteils auf direkte Manipulationen. Im Bereich gestischer Kommandos finden, wenn überhaupt, nur Single-Touch Symbole Anwendung. Der vorliegenden Arbeit liegt der Gedanke zugrunde, dass die Umsetzung von Interaktionstechniken mit der Verfügbarkeit einfach zu handhabender Werkzeuge für deren Interpretation zusammenhängt. Auch kann die Hürde, eigene Techniken zu implementieren, verringert werden, wenn vielfältige Interaktionen erprobt sind und ihr Nutzen für Anwendungsentwickler abschätzbar wird. In der verfassten Dissertation wird ein Erkenner für planare, symbolische Gesten entwickelt, der über die Angabe von Templates trainiert werden kann und keine Beschränkung der Vielfalt von Eingaben auf berührungsempfindlichen Oberflächen voraussetzt. Um eine möglichst flexible Einsetzbarkeit zu gewährleisten, soll die Interpretation einer Geste unabhängig von natürlichen Varianzen - ihrer Translation, Skalierung, Rotation und Geschwindigkeit - und unter wenig spezifizierten Templates pro Klasse möglich sein. Weiterhin sind für Nutzerinteraktionen im Anwendungskontext übliche Echtzeit-Kriterien einzuhalten. Der vorgestellte Gestenerkenner basiert auf der Integration eines Nächste-Nachbar-Verfahrens in einen Ansatz der Bayes\'schen Klassifikation. Gesten werden in elementare, bedeutungstragende Einheiten zerlegt, aus deren lokalen Merkmalen mittels eines Sensor-Fusion Prozesses eine Maximum-Likelihood-Repräsentation abgeleitet wird. Die Flexibilität und hohe Genauigkeit des statistischen Verfahrens wird in ausführlichen Tests nachgewiesen. Unter gleichbleibenden Anforderungen wird eine Erweiterung vorgestellt, die eine Prädiktion von Gesten bei partiellen Eingaben ermöglicht. Deren Nutzen liegt - neben effizienteren Eingaben - in der nachgewiesenen Möglichkeit, per Templates spezifizierte direkte Manipulationen zu interpretieren. Zur Demonstration der Praxistauglichkeit der präsentierten Konzepte werden exemplarisch zwei Anwendungen entwickelt und mit Nutzern getestet, die eine vielseitige Verwendung von Mehr-Finger-Eingaben vorsehen. Neben einem Erkenner trainierbarer, domänenunabhängiger Skizzen wird ein System für die Texteingabe mit den Fingern bereitgestellt. Anhand von Nutzerstudien wird gezeigt, dass Multi-Touch beim Skizzieren verwendet wird, wenn es als Alternative zur Verfügung steht und die Verwendung eines Multi-Touch Gestenalphabetes im Vergleich zur Texteingabe per Single-Touch effizienteres Schreiben zulässt. Von den vorgestellten Konzepten können UI-Designer, Usability-Experten und Entwickler von Feedforward-Mechanismen zum dynamischen Lehren gestischer Eingaben gleichermaßen profitieren. Die Zerlegung einer Eingabe in Token und ihre Interpretation anhand der Zuordnung zu spezifizierten Templates lässt sich weiterhin auf benachbarte Gebiete, etwa die Offline-Erkennung von Symbolen, übertragen
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Greenwell, David Robert. "Template directed synthesis of oligosaccharides." Thesis, University of Leeds, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275698.
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Bruce, William Henry. "Fingerprint comparison by template matching." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/13146.
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A technique for fingerprint comparison based on template matching is presented. A digitised greyscale image is initially pre-processed, from which the template is derived. The use of "don't care" states in the template, which inhibit pixel comparisons, prevents environmental variations and noise from adversely affecting correlation results with subsequent images. The novelty of this approach is that although template matching is a mature method of pattern recognition, there are no reported successful attempts that solve the problem of fingerprint comparison using this technique. The fingerprint reference comprises a set of sub-templates in order to overcome localised skin stretching. These are individually correlated with the processed binary image. Significant correlation scores of each of the sub-templates are posted in a voting area. After all the sub-templates have correlated with the image, this area is then polled for clusters of votes, whose density determines the success of the comparison. It is seen that pattern matching techniques are dependent on the clarity of data they process, and a method for capturing fingerprint images of a consistently high quality is presented. A parallel template matching architecture comprising an array of 32 correlation cells is also presented. The array enables the simultaneous correlation of four sub-templates with eight areas of the image. This architecture makes use of industry standard byte wide random access memories (RAM) for storing the reference templates and the image. The algorithms that comprise the fingerprint comparison system are taken from concepts, through a stage of empirical development and extensive field trials, to an eventual compact and cost effective Very Large Scale Integration (VLSI) Application Specific Integrated Circuit (ASIC) based implementation.
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Ismail, Dayana Qhairunisa. "Off-template functionalisation of carbohydrates." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/offtemplate-functionalisation-of-carbohydrates(d052ed49-e722-4af4-a8d4-348b153adbd2).html.
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The conjugate addition of organometallic reagents to α,β-unsaturated carbonyl compounds has been studied extensively and is now one of the most important methods for carbon-carbon bond formation. In devising a novel approach to the synthesis of C-glycosides such as gilvocarcin M, we had occasion to investigate the conjugate addition reactions of a diverse range of nucleophilic reagents (i.e. cuprate, RMgX, R-Li, NR2 and ylides) with a number of γ-alkoxy-α,β-unsaturated compounds (esters, ketones, aldehydes, nitro and sulfones): a sequence which hitherto has received scant attention. The stereochemical outcome of these conjugate addition reactions has been elucidated and the stereochemical rationale for the observed sense of asymmetric induction is also discussed.
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Sneiders, Eriks. "Automated question answering : template-based approach." Doctoral thesis, KTH, Computer and Systems Sciences, DSV, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3300.
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The rapid growth in the development of Internet-basedinformation systems increases the demand for natural langu-ageinterfaces that are easy to set up and maintain. Unfortunately,the problem of understanding natural language queries is farfrom being solved. Therefore this research proposes a simplertask of matching a one-sentence-long user question to a numberof question templates, which cover the knowledge domain of theinformation system, without in-depth understanding of the userquestion itself.The research started with development of an FAQ(Frequently Asked Question) answering system that providespre-stored answers to user questions asked in ordinary English.The language processing technique developed for FAQ retrievaldoes not analyze user questions. Instead, analysis is appliedto FAQs in the database long before any user questions aresubmitted. Thus, the work of FAQ retrieval is reduced tokeyword matching without understanding the questions, and thesystem still creates an illusion of intelligence.Further, the research adapted the FAQ answering techniqueto a question-answering interface for a structured database,e.g., relational database. The entity-relationship model of thedatabase is covered with an exhaustive collection of questiontemplates - dynamic, parameterized "frequently asked questions"- that describe the entities, their attributes, and therelationships in form of natural language questions. Unlike astatic FAQ, a question template contains entity slots - freespace for data instances that represent the main concepts inthe question. In order to answer a user question, the systemfinds matching question templates and data instances that fillthe entity slots. The associated answer templates create theanswer.Finally, the thesis introduces a generic model oftemplate-based question answering which is a summary andgene-ralization of the features common for the above systems:they (i) split the application-specific knowledge domain into anumber of question-specific knowledge domains, (ii) attach aquestion template, whose answer is known in advance, to eachknowledge domain, and (iii) match the submitted user questionto each question template within the context of its ownknowledge domain.
Keywords:automated question answering, FAQ answering,question-answering system, template-based question answering,question template, natural language based interface
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Hartmann, Falk. "Safe Template Processing of XML Documents." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-75342.
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Templates sind eine etablierte Technik zur Zusammenführung verschiedener Datenquellen, welche zum Zwecke der Separation of Concerns getrennt gehalten werden sollen. Bei der Benutzung bestehender Ansätze tritt das Problem auf, dass zur Zeit der Erstellung eines Templates keine Aussagen über die Ergebnisse der Ausprägung des Templates gemacht werden können. Die Arbeit konzipiert einen alternativen Template-Ansatz und setzt diesen für XML-basierte Zielsprachen um. Die dadurch ermöglichte sichere templategestützte Verarbeitung von XML-Dokumenten zeichnet sich durch dadurch aus, das bereits zur Erstellungszeit eines Templates Aussagen über das Ergebnis der Template-Ausprägung getroffen werden können. Darüber hinaus adressiert der neue Ansatz weitere Fehlerquellen, welche typischerweise bei der Ausprägung von Templates auftreten.
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Prout, Adam. "Parameterized Code Generation From Template Semantics." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/1027.
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We have developed a tool that can create a Java code generator for a behavioural modelling notation given only a description of the notation's semantics as a set of parameters. This description is based on template semantics, which has previously been used to describe a wide variety of notations. As a result, we have a technique for generating Java code for models written in any notation describable in template semantics. Since template semantics allows for models containing nondeterminism, we introduce mechanisms for eliminating this nondeterminism when generating code. We describe Java implementations of several template-semantics composition operators that have no natural Java representations and give some techniques for optimizing the generated code without sacrificing correctness. The efficiency of our generated code is comparable to that of commercial notation-specific code generators.
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Nonoo, Rebecca Helen. "Kinetic template-guided tethering of fragments." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/40129.
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This thesis is composed of two separate projects: Kinetic Template-Guided Tethering of Fragments and Design and Synthesis of a Chemical Probe to Dissect the Cellular Signalling Cascade leading to Cyclin D1 Degradation after DNA Damage. Kinetic Template-Guided Tethering of Fragments The development of a novel methodology for the site-directed discovery of small molecule, protein-binding ligands is described. The protein of interest, with a cysteine thiol (either native or engineered) adjacent to the desired binding pocket, is incubated with mixtures of low molecular weight compounds (fragments) modified with either an acrylamide or a vinyl sulfonamide capture group. Any ligand within the mixture that binds within the pocket brings the capture group into close proximity with the cysteine thiol, promoting a conjugate addition reaction at an increased rate over the background reaction. The capture reaction is designed to be slow, such that during the time course of an experiment, no adduct formation is observed unless the reaction is templated by the protein. By this method, binding ligands are rapidly identified by mass spectrometry analysis of the crude reaction mixtures. The methodology has been termed 'kinetic template-guided tethering'. Design and Synthesis of a Chemical Probe to Dissect the Cellular Signalling Cascade leading to Cyclin D1 Degradation after DNA Damage An inhibitor described within the literature was found to attenuate the reduction of cyclin D1 after DNA damage to cells. In order to implement a two-step chemical proteomics strategy to find the molecular target of this inhibitor, a synthesis of the compound with an alkyne appendage was required. The alkyne acts as a functional handle for attachment of a reporter molecule in cells via the Huisgen cycloaddition ('Click') reaction. The design and synthesis of this inhibitor with the alkyne appendage is described.
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Johansson, Anders. "Template-Based fabrication of Nanostructured Materials." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7364.
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Nikan, Mehran. "Template-assembled synthetic G-quartets (TASQS)." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/5825.
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Fabrication of functional supramolecular structures requires a certain degree of control
which may not be achieved by relying solely on noncovalent interactions. The current study
aims to investigate the effect of a rigid cavitand template on morphology, function and stability
of lipophilic G-quadruplexes. The first Chapter of this thesis introduces different aspects of G
quadruplex chemistry and explains how these structures are particularly suited for the creation of
supramolecular architectures.
The second Chapter of this thesis presents the synthesis and self-assembly of a new class
of supramolecular architectures composed of four guanosines attached to a rigid cavitand
template. These structures, named template-assembled synthetic G-quartets (TASQs), were
synthesized via the “click” reaction and manifest an ordered topology dictated by the template.
The lipophilic TASQs were found to self-associate spontaneously to form a singular basket-like
structure in chloroform. Moreover, it was found that TASQs form cation-free G-quartets which
exhibit remarkable stability under this condition.
The third Chapter of this thesis describes the preparation, characterization and solution
study of the cation-bound complexes TASQNa⁺, TASQK⁺, TASQCs⁺, and TASQSr²⁺.
Cations play a major role in controlling the morphology and stability of G-quadruplexes. The
analysis of the cation-specific structures of TASQs reveals the formation of a monomeric G
quartet for Na⁺ and Sr²⁺,a dimeric system for Cs⁺ and a mixture of monomers and dimers for K⁺.
The factors governing the formation of these structures were evaluated, the selectivities of
TASQs for cations were determined, and the cation-dependent structural transformations were
studied.
The fourth Chapter describes the efforts towards synthesizing a hydrophilic TASQ via
the “click” reaction. The following steps have been taken: 1) a water-soluble cavitand has been
successfully synthesized and characterized, which can potentially serve as a hydrophilic
template, and 2) two oligonucleotides have been appropriately functionalized and preliminary
coupling reactions were attempted. The next phases of this research along with potential future
directions are discussed in Chapter five.
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Bare, Grant. "Synthesis of template-assembled nucleotide quartets." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42842.
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The thesis work described herein addresses a desire to isolate a guanine quartet and other unknown nucleobase quartets in Nature's solvent, water. Template-assembly of the nucleobase quartets or tetrads by the application of a cavitand template molecule was utilized as a synthetic strategy. Several synthetic precedents were sought and included developing DNA synthetic methodologies for four-fold nucleotide coupling of deoxyguanosine onto an individual substrate, imparting solubility in water on the resultant supramolecular constructs, and designing molecules capable of stabilizing G-quartet or G-tetrad self-assemblies. Chapter 1 forms an introduction for this work by summarizing significant reports in the scientific literature on nucleic acid structure and function and on known template-assembled syntheses of nucleic acid elements. Chapter 2 describes the development of phosphite triester and phosphoramidite DNA synthetic methodologies for synthesizing water-soluble phosphate-linked cavitand-nucleotide conjugates. The synthesis of triazole-linked cavitand-guanosine conjugates with imparted water-solubility is dealt with in Chapter 3. In Chapter 4, evidence is provided for the observation of unimolecular cation-free template-assembled guanine and thymine quartets in methanol solvent using the phosphate-linked architecture. Finally, Chapter 5 describes the first potential isolation of a single G-tetrad in water through template-assembly directed by a phosphate-linked cavitand-nucleotide conjugate. This species is shown to interact with small molecule binders of G-quadruplex DNA and inhibitors of the human telomerase enzyme. The novel supramolecules synthesized in this thesis have been shown to assist in the discovery of unusual DNA based structures, to act as a minimal model of human telomeric G-quadruplex DNA, and to serve as artificial receptors for potential anticancer therapeutics.
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Lynagh, Ian. "Soft types for template meta-programming." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442604.
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O'Sullivan, Melanie Claire. "Template directed synthesis of porphyrin nanorings." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:c500c594-fa28-4857-b74e-b80d14b87202.
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This thesis describes supramolecular approaches to porphyrin nanorings. Cyclic porphyrin arrays resemble natural light harvesting systems, and it is of interest to probe the photophysical effects of bending the porphyrin aromatic π-system. A general overview of the synthesis and photophysical properties of porphyrins and their arrays is carried out in Chapter 1. The electronic structure of porphyrins is examined, and how conformational effects in oligomers, such as inter-porphyrin torsional angle and backbone bending influence the π-conjugation pathway. The structures of light harvesting complexes are discussed. Chapter 2 describes the design and synthesis of a complementary 12-armed template designed to coordinate linear porphyrin oligomers in the correct conformation for cyclisation to give a cyclic porphyrin dodecamer. Chapter 3 demonstrates two approaches to a cyclic porphyrin dodecamer ring. Firstly, a classical templating approach using the 12-armed template is described. The limitations of this approach in the quest for larger nanorings are discussed. Vernier templating, which utilises a mismatch in the number of binding sites between a ligand and its receptor is introduced as a general strategy to the synthesis of large nanorings. This is demonstrated by the synthesis of cyclic dodecamer from a linear porphyrin tetramer and a hexadentate template via a figure-of-eight intermediate. The general utility of the Vernier method to large nanorings is explored in Chapter 4 with steps towards the synthesis of a cyclic tetracosamer, consisting of 24 porphyrin subunits. In preliminary experiments, an improved route to the cyclic porphyrin octamer is described. Finally, the photophysical properties of the nanoring series are explored in Chapter 5 as a function of size and conformation. Femtosecond photoluminescence spectroscopy shows that even in cyclic dodecamer, exciton delocalisation over the entire porphyrin backbone occurs on a sub-picosecond timescale, and parallels are drawn with the dynamics of natural light harvesting complexes.
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Collier, Robin. "Automatic template creation for information extraction." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286986.
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Luker, Tim John. "Tandem reactions on a zirconocene template." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295252.
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NETO, CARLOS DE SALLES SOARES. "TEMPLATE BASED AUTHORING OF HYPERMEDIA DOCUMENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=17062@1.
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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIORNos últimos anos, tem crescido a demanda por aplicações hipermídia, as quais relacionam objetos de áudio, vídeo, texto, imagem, etc. no tempo e no espaço. Uma aplicação hipermídia é especificada formalmente em um documento. É comum agrupar um conjunto de aplicações estruturalmente ou semanticamente similares entre si como uma família de documentos. Modelos conceituais para autoria hipermídia são usados como base para a especificação de documentos, mas eles não são satisfatórios para definir famílias de documentos. Este trabalho apresenta um método para a autoria hipermídia baseado na identificação dessas famílias e sua instanciação visando a criação de novos documentos. A principal contribuição deste trabalho é a definição de uma linguagem para a especificação de famílias de documentos, chamada TAL (Template Authoring Language), a qual é empregada no método proposto. TAL se apóia principalmente na extensão do conceito de composição, habitualmente presente em modelos hipermídia. Em TAL, composições podem ser incompletas, com alguns de seus elementos internos propositalmente deixados em aberto e com regras restringindo a forma como esses elementos ausentes podem ser inseridos na composição. Para se chegar a essa linguagem, um estudo empírico foi realizado investigando a aprendizagem e o emprego de Nested Context Language (NCL). A escolha de NCL se deu por ela se basear em um modelo com composicionalidade que pode ser estendido para atender a famílias de documentos, e por ela ser empregada na autoria de documentos hipermídia e passível de ser usada por perfis profissionais diversos e não apenas programadores. Assim, uma terceira contribuição naturalmente decorrente deste trabalho é oferecer diretrizes para a evolução de NCL, em especial aperfeiçoando sua usabilidade.
In the past years, it has increased the demand for hypermedia applications, which relate objects of audio, video, text, images, etc. in time and space. A hypermedia application is formally specified in a document. It is usual to group a set of applications structurally and semantically similar to each other as a documents family. Conceptual models for hypermedia authoring are the basis for documents specification, but they are not satisfactory to define documents families. This work presents as contribution a method for hypermedia authoring based in the identification of these families and their instantiation in order to create new documents. This method addresses the hypermedia document authoring as a social practice, where specialist authors collaborate to help and to ease the task of less skilled authors. Another contribution of this work is to define a language for the specification of these documents families, named TAL (Template Authoring Language), which can be applied in the proposed method. TAL relies mainly on extending the concept of composition, usually present in hypermedia models. In TAL, compositions can be incomplete, with a few of its internal elements purposely left undefined and with restriction rules on how these missing elements may be included in the composition. In order to achieve this language, an empirical study was conducted investigating the learning and use of Nested Context Language (NCL). The choice of NCL relies on the fact that it is based in a compositional model that can be extended to specify documents families, and because it is used by various professional profiles and not just programmers in the hypermedia document authoring. Thus, a third contribution due to this work is to provide guidelines to NCL evolution, especially improving its usability.
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Dougherty, Shelley A. "Template-assisted fabrication of nano-biomaterials." Digital WPI, 2009. https://digitalcommons.wpi.edu/etd-dissertations/351.
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"“One-dimensional†nanostructures like nanotubes and nanorods hold great potential for a wide variety of applications. In particular, one-dimensional nanostructures may be able to provide many significant advantages over traditional spherical particles for drug delivery applications. Recent studies have shown that long, filamentous particles circulate longer within the body than spherical particles, giving them more time to reach the target area and deliver their payload more efficiently. In addition, studies investigating the diffusion of drugs through nanochannels have shown that the drug diffusion profiles can be controlled by varying the nanochannel diameter when the drug diameter and nanochannel diameter are close in size. The combination of increased circulation time and controllable drug release profiles give onedimensional nanostructure great potential for future drug release applications. To fully realize this potential, a simple, low cost, and versatile fabrication method for one-dimensional nanostructures needs to be developed and exploited. The objective of this work is to demonstrate the versatility of template-assisted nanofabrication methods by fabricating a variety of unique protein and polymer one-dimensional nanostructures. This demonstration includes the adaptation of two different template-assisted methods, namely layer-by-layer assembly and template wetting, to fabricate glucose oxidase nanocapsules with both ends sealed, segmented polystyrene and poly(methyl methacrylate) nanorods, and poly(L-lactide)-poly(methyl methacrylate) core-shell nanowires with adjustable shell layer thicknesses. The unique nanostructure morphologies that were achieved using our novel fabrication methods will open the arena for future research focused on process control and optimization for specific applications."
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Alwazae, Meshari. "Template-driven Documentation of Best Practices." Doctoral thesis, Stockholms universitet, Institutionen för data- och systemvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-121625.
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Knowledge Management has become a key instrument for identifying, creating and sharing organizational knowledge assets. An attractive means for sharing knowledge is Best Practices (BPs), which are proven as well as efficient and effective solutions to recurring problems. BPs can offer significant benefits, including improved performance, reduced re-work and cost savings. However, it is challenging to share and use BP Documents (BPDs) in organizations, which is the overall problem addressed in this thesis. More precisely, the thesis focuses on two sub-problems: 1) The difficulty of finding and selecting appropriate BPs in large collections of BPs impedes the use of BPs, and 2) The low quality of BPDs impedes the use of BPs. Related to these problems, the thesis addresses two sub-goals. The first one is to design a BP Annotation Template for supporting the identification and selection of BPs in BP repositories. The template can be used for organizing and indexing the contents of BPDs independent of domain. The second sub-goal is to design a BP Document Template for supporting the creation, use and evaluation of BP documentation. The BP Document Template offers a structure for describing BPs in a detailed and systematic way. The research methodology applied is design science, which is the scientific study and creation of artifacts as they are developed and used by people with the goal of solving practical problems. The first artifact, the BP Annotation Template, has been designed and developed based on a literature study and evaluated using expert interviews. The second artifact, the BP Document Template, has been designed and developed based on a literature study using grounded theory as well as on interviews with KM experts. The BP Document Template has been evaluated using expert interviews and demonstrated by being applied in three real-life cases. By basing the two artifacts on literature studies, the two artifacts consolidate, integrate and extend previous work on BP documentation. The evaluations indicate that the BP Annotation Template provides a strong foundation for identifying and selecting BPs, independent of domain, and that the BP Document Template can support the structuring of BP documents so that they become complete, uniform and easy-to-use. An identified drawback of the two artifacts is the need for extensive resources for implementing and applying them since they may be complex and time-consuming to use. The artifacts are expected to support BP designers as well as BP managers and BP users.
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Larsson, Niklas. "InP/Si Template for Photonic Application." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187046.
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In this work an epitaxial layer of Indium Phosphide (InP) has been grown on top of a silicon substrate using the Corrugated Epitaxial Lateral Overgrowth (CELOG) technique. The grown InP CELOG top layer typically has a poor surface roughness and planarity. Before this surface can be used for any processing it has to be smooth and planarized. For this purpose a two-step Chemical Mechanical Polishing (CMP) technique has been investigated and developed. In the first step commercially available Chemlox has been used to planarize the sample. In the second step Citric Acid (CA) and sodium hypochlorite (NaClO) has been mixed together to form abrasive-free polishing slurry. The second step has been developed to remove defects introduced by the first step. This surface is prepared to demonstrate that a photonic device such as a quantum well can be realized in a Photonic Integrated Circuit (PIC). A quantum well was grown on the polished CELOG InP/Si sample and measured with Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and Photoluminescence (PL). The roughness was improved with CMP from 33.2 nm to 12.4 nm. However the quantum well did not give any response in the PL measurements.I detta arbete har ett epitaxiellt lager indiumfosfid (InP) blivit växt på ett kiselsubstrat med hjälp av en korrugerad epitaxial lateral överväxt (CELOG) teknik. Det översta lagret av den CELOG växta ytan har ofta en väldigt ojämn yta. Innan denna yta kan användas till någon fortsatt utveckling måste den vara slät och plan. Det översta lagret har polerats med hjälp av en två-stegs kemisk mekanisk polerings (CMP) teknik. I det första steget har komersiellt tillgänglig Chemlox använts för att planarisera ytan. I det andra steget har citronsyra (CA) och natrium hypoklorit (NaClO) blandats samman för att bilda ett partikelfritt polermedel. Det andra steget har tagits fram för att ta bort defekter introducerade I det första steget. Ytan är preparerad för att demonstrera att en fotonisk enhet, t.ex. en kvantbrunn kan realiseras I en fotonisk integrerad krets (PIC). En kvantbrunn växtes fram på det polerade CELOG InP/Si provet och mattes med hjälp av atomkraftsmikroskop (AFM), scanning electron mikroskopi (SEM), röntgendiffraktion (XRD) och fotoluminisens (PL). Ytojämnheten förbättrades med hjälp av CMP från 33.2 nm till 12.4 nm. Dock så gav ej kvantbrunnen någon respons I PL-mätningarna.
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Tripathy, Jagnyaseni. "Template-Assisted Fabrication of Ferromagnetic Nanomaterials." ScholarWorks@UNO, 2014. http://scholarworks.uno.edu/td/1951.
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Abstract
Template assisted deposition was used to produce various nanomaterials including simple nanowires, nanorods, multi-segmented metal nanowires, core-shell nanowires, alloy and polymer wires and tubes. Anodized aluminum oxide (AAO) membranes were used as templates for the growth of the various structures using an electrochemical deposition method and also by wetting the porous templates. In the electrochemical deposition method, the pore size of the templates affects the rate of synthesis and the structures of the nanomaterials while in the wetting method, the viscosity and reaction time in the polymer solution influence the structures of the nanomaterials.
A conventional two-step anodization procedure was used to synthesize thick AAO templates with porous hexagonal channels at a constant applied voltage and temperature. A maximum thickness of over 180 µm oxide layer could be fabricated using mild anodization at 60 V and 80 V. Compared to conventional mild anodization, these conditions facilitated faster growth of oxide layers with regular pore arrangement.
Polyethylene glycol (PEG) containing ferromagnetic nanowires were synthesized using template assisted electrochemical deposition method. During the synthesis, simultaneous deposition of polymer and metal ions resulted nanowires coated with a uniform layer of PEG without interfering with the structure and magnetic properties of the nanowires.
PEG-coated Ni nanowires were embedded in polyethylene diacrylate (PEGDA) matrix after the removal of the AAO templates. Comparison of results with and without a magnetic field during embedding showed that the presence of magnetic field supported embedding of nanowire arrays in polymer.
Influence of using AAO templates with several pore diameters for the synthesis of bimetallic nanowires were studied by growing Ni-Fe and Ni-Co bi-metallic nanowires. At a constant applied current by using templates with a pore diameters of 60 nm alloy formed while with a pore diameter of 130 nm core-shell nanowires formed.
Polyvinylidene fluoride (PVDF) films and nanotubes were synthesized using a solution recrystallization method that favored the formation of piezoelectric β phase thin films. Variation in the concentration of polymer in the mixture solution allowed synthesis of different types of structures such as PVDF composites, nanorods and nanocrystals with tunable morphologies.
Keywords: One-dimensional structures, electrodeposition, porous alumina, ferromagnetic nanostructures, magnetic core-shell nanowires, alloys, polymer composite, stimuli-active, PEGDA, azobenzene, and PVDF.
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Mayers, Paul Christopher. "Template directed synthesis of molecular knots." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.700956.
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Wong, Chi-Kin. "Reusable template library for parallel patterns." [Gainesville, Fla.] : University of Florida, 2002. http://purl.fcla.edu/fcla/etd/UFE0000618.
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Kumar, T. S. "Stereoselective functionalizations on arene chromium template." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2003. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2882.
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Hezel, Stefan. "FPGA-basiertes Template-Matching mit distanztransformierten Bildern." [S.l. : s.n.], 2004. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11244076.
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Sides, Charles Robert. "Nanoscale energy storage electrodes by template-synthesis." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0012360.
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Jupe, Hannah Rachel Elizabeth. "Novel monomer-template assemblies for molecular imprinting." Thesis, University of Leeds, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485632.
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Molecular imprinting provides a means of creating tailor made molecular assemblies having structural and functional group complementarity to a template molecule. These molecularly imprinted polymers (MIPs) often have a high and selective affinity for the template over structurally related compounds. MIPs may therefore offer advantages over existing methods in chemical analysis. They are cheap and relatively facile to produce, and are stable, being able to withstand elevated temperatures and pressures. Applications of imprinting demonstrated so far include separation methods such as liquid chromatography (LC), immunoassay-type binding assays, and chemical sensors. Novel non-covalent monomer-template assemblies have been developed in an attempt to demonstrate an improvement in the recognition properties of MIPs. These assemblies draw on the thermodynamic principle that complexes between a template and chelating monomers should be entropically more favourable than complexes with monomers having just single points of interaction. More stable monomer-template assemblies, pre-polymerisation, should give rise to a larger proportion of high fidelity binding sites in the resulting polymer. In the first approach (Chapter 2) chelating dimers were developed, which have two acrylic acid groups joined by a benzene or biphenyl linker. The acrylic acid units were substituted in the ortho, meta and para positions on the benzene ring and in the para position on the biphenyl. Secondly, linear pre-polymers were synthesised, bearing carboxylic acid groups and grafted polymerisable acrylate side chains on their prepolymer backbone (Chapter 3). The dimers were used to imprint (-)-nicotine, and the linear pre-polymers were used to imprint (-)-nicotine and L-phenylalanine anilide (L-PAA). Recognition properties of the MIPs were assessed by using the polymers as chiral stationary phases (CSPs) in high performance liquid chromatography (HPLC). The linear pre-polymers and the ortho- and meta- substituted dimers were able to discriminate between a racemate ofthe template molecule. A novel method of imprinting cholesterol was developed whereby cholesterol was covalently bound to the monomer vinylbenzylamine through a sacrificial carbamate linker (Chapter 4). The carbamate was cleaved post polymerisation to leave primary amine groups located solely in cholesterol-selective binding sites.. These amine groups· were able to rebind cholesterol through non-eovalent interactions. Batch binding assays were used to assess the reco~tion properties of the imprinted and control polymers. Finally, a novel fluorescent monomer was synthesised and applied in the molecular imprinting of Boc-L-phenylalanine (Boc-L-Phe) (Chapter 5). Fluorescence of the imprinted polymer was seen to increase in the presence of the template, and this increase was greater for the imprinted polymer compared to the control polymer.
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Sharp, Jeremy Allen. "SEDIMENT BUDGET TEMPLATE FOR THE ABERDEEN POOL." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11092007-092448/.
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The purpose of this work is to create a sediment budget template (SBT) with Aberdeen Pool on the Tennessee-Tombigbee Waterway as the demonstration site. The first task is to define the sediment behavior for the system in question. USGS data are used for sediment concentrations and flows. The USGS data are the basis for the Power Curve Program which defines the sediment behavior in terms of a power function. The second program, Tier 1 Program, uses the power curve coefficients along with the bankfull discharge to define the sediment fluxes. Thirdly, the Tier 2 Program uses power curve coefficients with daily flows to calculate daily sediment flux which are integrated over each year to calculate the yearly fluxes. From the sediment fluxes, a mass balance equation is implemented to estimate total deposition. Lastly, the computer program SIAM is used to estimate deposition amount. Comparison among the three different methods provides a best estimate of the final depositional approximation.
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Slagt, Vincent Friso. "Template directed assembly of transition metal catalysts." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/70834.
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Guest, William Clay. "Template-directed protein misfolding in neurodegenerative disease." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/41990.
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Protein misfolding diseases represent a large burden to human health for which only symptomatic
treatment is generally available. These diseases, such as Creutzfeldt-Jakob disease, amyotrophic
lateral sclerosis, and the systemic amyloidoses, are characterized by conversion of globular, nativelyfolded
proteins into pathologic β-sheet rich protein aggregates deposited in affected tissues. Understanding
the thermodynamic and kinetic details of protein misfolding on a molecular level depends
on accurately appraising the free energies of the folded, partially unfolded intermediate,
and misfolded protein conformers. There are multiple energetic and entropic contributions to the
total free energy, including nonpolar, electrostatic, solvation, and configurational terms. To accurately
assess the electrostatic contribution, a method to calculate the spatially-varying dielectric
constant in a protein/water system was developed using a generalization of Kirkwood Frohlich theory
along with brief all-atom molecular dynamics simulations. This method was combined with
previously validated models for nonpolar solvation and configurational entropy in an algorithm to
calculate the free energy change on partial unfolding of contiguous protein subsequences. Results
were compared with those from a minimal, topologically-based Gō model and direct calculation
of free energies by steered all-atom molecular dynamics simulations. This algorithm was applied
to understand the early steps in the misfolding mechanism for β₂-microglobulin, prion protein,
and superoxide dismutase 1 (SOD1). It was hypothesized that SOD1 misfolding may follow a
template-directed mechanism like that discovered previously for prion protein, so misfolding of
SOD1 was induced in cell culture by transfection with mutant SOD1 constructs and observed to
stably propagate intracellularly and intercellularly much like an infectious prion. A defined minimal
assay with recombinant SOD protein demonstrated the sufficiency of mutant SOD1 alone
to trigger wtSOD1 misfolding, reminiscent of the “protein-only” hypothesis of prion spread. Finally,
protein misfolding as a feature of disease may extend beyond neurodegeneration and amyloid
formation to cancer, in which derangement of protein folding quality control may lead to antibodyrecognizable
misfolded protein present selectively on cancer cell surfaces. The evidence for this
hypothesis and possible therapeutic targets are discussed as a future direction.
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Park, Gwangcheol. "Multiscale deformable template matching for image analysis." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/13737.
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Lujambio, Julio Agustin. "A BALANCED SCORECARD TEMPLATE FOR FLORIDA INCUBATORS." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4368.
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Incubators are organizations that have become a key factor to the success of new ventures. One study jointly sponsored by the University of Michigan, Ohio University, the National Business Incubation Association, and the Southern Technology Council found that 87% of the firms that went through an incubator program remain in business and 84% remain in their community. Clearly properly run incubators can provide much benefit. However there is littleconsensus on goals and best practices for managing the incubators themselves. Recently an approach to integrating strategy and practice called the balanced scorecard (BSC) has emerged asa popular tool in many public and private organizations. The purpose of this thesis is to examine the BSC as a potential performance andmanagement tool for Incubators in Florida. While the list of major corporations and public institutions that has adopted some form of a balanced scorecard continues to grow, there has been no research into its adaptability to incubators. This thesis found potential benefits associated with applying the BSC model to incubators, such as maintaining incubator's competitiveness and improving communication and employee's performance. Because a full-scale balanced scorecard system entails a fairly intensive implementation effort, it cannot be prescribed randomly across the variety of incubator enterprises. Accordingly, a stage of development framework is employed to help categorize incubators, assess their respective planning needs and identify how the balanced scorecard approach can be applied beneficially. Under these parameters, it is proposed that for incubators where both the degree of managerial complexity and the prospects for extensive change are high, the balanced scorecard can be a useful mechanism for effective management. A number of important implementation issues are also explored and some directions for future research are identified.M.S.
Department of Industrial Engineering and Management Systems
Engineering and Computer Science
Industrial Engineering and Management Systems
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Ruddy, M. "The kinetics and mechanism of template polymersiation." Thesis, University of Strathclyde, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382462.
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Mai, Dominic [Verfasser], and Olaf [Akademischer Betreuer] Ronneberger. "A multi-template atlas for volumetric images." Freiburg : Universität, 2017. http://d-nb.info/1159504946/34.
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Campbell, Neill William. "Template matching and optimisation in computer vision." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295176.
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Hall, Simon Robert. "Template control of the structure of minerals." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325749.
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Woltering, Steffen. "Metal template synthesis of novel interlocked architectures." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/metal-template-synthesis-of-novel-interlocked-architectures(ac8b8640-ba8d-4ef3-8694-66738c69ca6c).html.
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Molecular knots form spontaneously in natural and synthetic polymers. However, they were not synthesised in small molecule form until the late 1980s. Different templating strategies afforded some of the simplest knots. More complicated knots proved elusive until the circular helicate strategy was presented. This two-step approach involves the formation of a circular arrangement of ligands which is subsequently closed to form a molecular knot. This thesis shows new ways to form mechanical bonds and presents novel molecular knots based on circular helicates. These knots can readily be demetallated. The possibility to control the metals bound to a knot allows for the switching between catalytically active and inactive states. Such systems also allow for the allosteric regulation of catalytic systems.
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Modicom, Florian. "Active template synthesis of chiral interlocked molecules." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/428050/.
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Mechanically interlocked molecules are very interesting compounds for their architecture. The core of these molecules is readily accessible using a large range of synthetic approaches that give access to a wide range of functional group for applications such as sensors, molecular machines or catalyst. This last field attracts attention with the recent emergence of enantioselective catalytic platform and tuneable catalysts, such as on and off switchable or stimuli response catalysts. In this thesis, the starting chapter highlights the evolution of the synthesis of mechanically interlocked molecules and a selection of chiral systems with recent applications in enantioselective transformations. The following chapter illustrates the influence of the mechanical bond in copper-catalysed transformations. This involved the synthesis of a model rotaxane and the application of rotaxane-based ligand in various copper-catalysed transformations with improvement in terms of diastereoselectivity and conversion. The third chapter is an illustration of a modification of reactivity related to the mechanical bond. The unprecedented tandem reaction, of an otherwise stable moiety, for the synthesis of rotaxanes highlighted in this chapter was a feature of the mechanical bond. The fourth chapter is dedicated to the improvement of an existing approach for the production of simple catenanes in excellent yield. The approach developed in this chapter was extended to multicomponent systems with unprecedented success. The last chapter in an extension of the fourth chapter to access chiral catenanes. The development of a new approach for the accessible synthesis of topologically chiral catenanes enabled the access of usually very complicated molecules.
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Oslick, Sherri L. (Sherri Lynn). "Characterization of short template-nucleated helical peptides." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38779.
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Abulnaga, Sayed Mazdak. "Volumetric mesh parameterization to a canonical template." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/117804.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 63-68).
We present a volumetric mesh-based algorithm for mapping the placenta to a canonical template to enable effective visualization of local anatomy and function. Monitoring placental function in vivo promises to support pregnancy assessment and to improve care outcomes. We aim to alleviate visualization and interpretation challenges presented by the shape of the placenta when it is attached to the curved uterine wall. We flatten a volumetric mesh that captures placental shape to resemble the well-studied ex vivo shape. We formulate our method as finding a piecewise affine map from the in vivo shape to an ellipsoidal or a cylindrical template while minimizing the symmetric Dirichlet energy to control distortion throughout the volume. Local injectivity is enforced via constrained line search during gradient descent. We evaluate the proposed method in the context of a twin pregnancy study that includes MRI scans of seven women. We achieve sub-voxel accuracy in mapping the boundary of the placenta to the template, while successfully controlling distortion. We demonstrate that our approach enhances visualization of the placental anatomy and is generalizable to map to a number of canonical templates.
by Sayed Mazdak Abulnaga.
S.M.
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Aljabali, Alaa Ahmed. "CPMV as synthon and template in bionanotechnology." Thesis, University of East Anglia, 2011. https://ueaeprints.uea.ac.uk/37403/.
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