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Perez, De Rosso Santiago(Santiago Nicolas). "Declarative assembly of web applications from predefined concepts." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/128295.
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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2020<br>Cataloged from student-submitted PDF of thesis.<br>Includes bibliographical references (pages 181-186).<br>This thesis presents a new approach to web application development, in which an application is constructed by configuring and composing concepts drawn from a catalog developed by experts. A concept is a self-contained, reusable unit of behavior that is motivated by a purpose defined in terms of the needs of an end-user. Each concept includes both client- and server-side functionality and exports a collection of components--graphical user interface elements, backed by application logic and database storage. To build a web application, the developer imports concepts from the catalog, tunes them to fit the needs of the application via configuration variables, and links concept components together to create pages. Components of different concepts may be executed independently or bound together declaratively with dataflows and synchronization. The instantiation, configuration, linking and binding of components is all expressed in a simple template language. The approach has been implemented in a platform called Déjà Vu. We outline and compare our approach to conventional approaches to web application development and we present results from a case study in which we used our platform to replicate a collection of applications previously built by students for a web programming course.<br>by Santiago Perez De Rosso.<br>Ph. D.<br>Ph.D. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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Drangsholt, Finn. "The applicability of demand controlled ventilating systems for assembly halls /." Online version, 1992. http://bibpurl.oclc.org/web/29597.
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Greig, Hamish Stuart. "Community assembly and food web interactions across pond permanence gradients." Thesis, University of Canterbury. School of Biological Sciences, 2008. http://hdl.handle.net/10092/1585.
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Ecological communities along gradients of environmental stress are thought to be structured by trade-offs between resisting biotic interactions in physically benign habitats and successfully exploiting physically stressful habitats. However, these trade-offs are likely to be affected by the predictability of abiotic stressors, and variation in the strength of biotic interactions. I investigated community assembly and food web interactions in ponds across an unpredictable gradient of water inundation (pond permanence) in Canterbury, New Zealand. Pond community composition and species richness were strongly influenced by pond permanence. However, species in temporary ponds were a nested subset of generalists that were also found in permanent ponds, rather than a unique assemblage of temporary pond specialists. Subsequent experiments indicated predator impact decreased with pond permanence, partially due to the foraging suppression of predatory invertebrates in permanent ponds by fish. Weak predation in permanent ponds combined with unpredictable drying regimes likely selected for generalist traits, and resulted in community assembly being driven by a gradient of drying stress rather than trade-offs between biotic interactions and drying. Furthermore, predator impact increased over time in temporary ponds. In predictable snow-melt ponds in the Colorado Rocky Mountains, seasonal windows of weak predation were exploited by vulnerable species, leading to increased diversity within habitats. However in unpredictable systems like Canterbury, temporal increases in predation risk that depend on drying history are likely to increase variability in the spatial arrangement of suitable habitats for particular species. This should further favour the evolution of generalist traits and reduce the importance of trade-offs between predation and drying in the assembly of communities. Considering the predictability of disturbance regimes and the spatial and temporal variation in biotic interactions will greatly enhance understanding and management of communities in heterogeneous landscapes.
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nnah, Marie Hannah Marie. "The effects of assembly method on food webs : integrating population dynamics, evolution and web size." Thesis, University of York, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516620.
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Oliveira, Matheus Brito de. "GATOOL - Genome Assembly Tool: uma ferramenta web para montagem de genomas bacterianos." Universidade Estadual de Feira de Santana, 2017. http://localhost:8080/tede/handle/tede/513.
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Previous issue date: 2017-06-12<br>The assembly of bacterial genomes consists of a process of reordering fragments so that the original genome can be represented. However, to maximize the results of genome assembly, some steps are required, for instance, read quality analysis and preprocessing, repetition identification and quality check. The process of assembly of genomes is a complex step that involves the type of sequencing that was used, there are several types of sequencers which imply different characteristics for each one for example: fragments size, throughput, among others. Analyzing these characteristics requires the use of several computational tools, to assist in all the processes mentioned above, and since the range of software available is quite broad and distinct, it is necessary for the user to learn to work with this computational diversity, dominating often knowledge that is not of the biological area, implying in less time for a deepening in biological questions. Based on this context, we developed a pipeline to perform an automated fragment analysis, read preprocessing, genome assembly and orientation of contigs, having as the assembly the main objective of the pipeline and that it will be managed by a Web application called GATOOL (Genome Assembly Tool). Aiming to evaluate the performance of the application, tests were carried out with two samples of prokaryotic organisms, which are: Bacillus amyloliquefaciens and Serratia marcescens. Also perform a test with seven SRA samples. Both organisms are sequenced on the Ion PGMTM platform. The tools used to perform the assembly were SPAdes and Velvet, both assemblers use de Bruijn graph algorithm as a paradigm for the assembly of the genome, after this stage the resulting set of contigs was ordered through the CONTIGuator, which is a reference ordering. We observed that the interface GATOOL allowed a quick and easy execution of several steps and processes in the field of genome assembly, including the assembly of two prokaryotic species in an automated way, thus facilitating the use and accomplishment of such processes by any user.<br>A montagem de genomas bacterianos ? um processo de reordena??o de fragmentos, de forma que se possa representar o genoma original. Entretanto, para que a montagem de um genoma seja realizada visando maximizar os resultados, ? preciso que algumas etapas sejam cumpridas, por exemplo: a an?lise dos fragmentos, o pr?-processamento destes fragmentos e novamente uma repeti??o do processo de an?lise, para verificar a efic?cia do pr?-processamento realizado. O processo de montagem de genomas ? uma etapa complexa, que envolve o tipo de sequenciamento que foi utilizado. Existem diversos tipos de sequenciadores, o que implica caracter?sticas distintas em cada um, como por exemplo: tamanho dos fragmentos, quantidade de fragmentos gerados por corrida, dentre outros. Analisando essas caracter?sticas, faz-se necess?ria a utiliza??o de diversas ferramentas computacionais para auxiliar a todos os processos citados anteriormente e, como a gama de softwares dispon?veis ? bem ampla e distinta, ? importante que o usu?rio domine essa diversidade computacional, contendo muitas vezes conhecimentos que n?o s?o da ?rea biol?gica, implicando menos tempo para um aprofundamento das quest?es biol?gicas. Com base neste contexto, prop?em-se um pipeline para a realiza??o da an?lise de fragmentos, pr?-processamento dos fragmentos, montagem de genomas e orienta??o de contigs, tendo como a montagem o objetivo principal do pipeline e este ser? gerenciado por uma aplica??o web chamada GATOOL (Genome Assembly Tool). Visando avaliar o desempenho da aplica??o, foram feitos testes com duas amostras de organismos procariontes, que s?o: Bacillus amyloliquefaciens e Serratia marcescens. Tamb?m foram realizados testes com sete amostras SRA. Ambos os organismos est?o sequenciados na plataforma Ion PGMTM. Os montadores usados foram o SPAdes e o Velvet, ambos montadores, utilizam o algor?tmo grafo de Bruijn como paradigma para a montagem do genoma; ap?s esta etapa, o conjunto de contigs resultante foi ordenado atrav?s do CONTIGuator, que ? uma ordena??o por refer?ncia. Observamos que a interface GATOOL permitiu uma execu??o r?pida e f?cil de diversas etapas e processos no campo da montagem de genomas, inclusive realizando a montagem de duas esp?cies procariontes de maneira automatizada, facilitando assim a utiliza??o e realiza??o de tais processos por qualquer usu?rio.
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Thimmapuram, Sunethra. "Web-Delivered Assembly Language Interactive Training and its Sequence Identification for Software Reverse Engineering." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright151551307959276.
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Alpaslan, Mehmet. "The cosmic web unravelled : a study of filamentary structure in the Galaxy and Mass Assembly survey." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/4906.
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I have investigated the properties of the large scale structure of the nearby Universe using data from the Galaxy and Mass Assembly survey (GAMA). I generated complementary halo mass estimates for all groups in the GAMA Galaxy Group Catalogue (G³C) using a modified caustic mass estimation algorithm. On average, the caustic mass estimates agree with dynamical mass estimates within a factor of 2 in 90% of groups. A volume limited sample of these groups and galaxies are used to generate the large scale structure catalogue. An adapted minimal spanning tree algorithm is used to identify and classify structures, detecting 643 filaments that measure up to 200 Mpc/h, each containing 8 groups on average. A secondary population of smaller coherent structures, dubbed `tendrils,' that link filaments together or penetrate into voids are also detected. On average, tendrils measure around 10 Mpc/h and contain 6 galaxies. The so-called line correlation function is used to prove that tendrils are real structures rather than accidental alignments. A population of isolated void galaxies are also identified. The properties of filaments and tendrils in observed and mock GAMA galaxy catalogues agree well. I go on to show that voids from other surveys that overlap with GAMA regions contain a large number of galaxies, primarily belonging to tendrils. This implies that void sizes are strongly dependent on the number density and sensitivity limits of the galaxies observed by a survey. Finally, I examine the properties of galaxies in different environments, finding that galaxies in filaments tend to be early-type, bright, spheroidal, and red whilst those in voids are typically the opposite: blue, late-type, and more faint. I show that group mass does not correlate with the brightness and morphologies of galaxies and that the primary driver of galaxy evolution is stellar mass.
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Sutanto, Agus. "Solution approaches for planning of assembly systems in three-dimensional virtual environments /." Bamberg : Meisenbach, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2650819&prov=M&dok_var=1&dok_ext=htm.
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Yeager, Lauren. "Does Landscape Context Affect Habitat Value? The Importance of Seascape Ecology in Back-reef Systems." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/892.
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Seascape ecology provides a useful framework from which to understand the processes governing spatial variability in ecological patterns. Seascape context, or the composition and pattern of habitat surrounding a focal patch, has the potential to impact resource availability, predator-prey interactions, and connectivity with other habitats. For my dissertation research, I combined a variety of approaches to examine how habitat quality for fishes is influenced by a diverse range of seascape factors in sub-tropical, back-reef ecosystems. In the first part of my dissertation, I examined how seascape context can affect reef fish communities on an experimental array of artificial reefs created in various seascape contexts in Abaco, Bahamas. I found that the amount of seagrass at large spatial scales was an important predictor of community assembly on these reefs. Additionally, seascape context had differing effects on various aspects of habitat quality for the most common reef species, White grunt Haemulon plumierii. The amount of seagrass at large spatial scales had positive effects on fish abundance and secondary production, but not on metrics of condition and growth. The second part of my dissertation focused on how foraging conditions for fish varied across a linear seascape gradient in the Loxahatchee River estuary in Florida, USA. Gray snapper, Lutjanus griseus, traded food quality for quantity along this estuarine gradient, maintaining similar growth rates and condition among sites. Additional work focused on identifying major energy flow pathways to two consumers in oyster-reef food webs in the Loxahatchee. Algal and microphytobenthos resource pools supported most of the production to these consumers, and body size for one of the consumers mediated food web linkages with surrounding mangrove habitats. All of these studies examined a different facet of the importance of seascape context in governing ecological processes occurring in focal habitats and underscore the role of connectivity among habitats in back-reef systems. The results suggest that management approaches consider the surrounding seascape when prioritizing areas for conservation or attempting to understand the impacts of seascape change on focal habitat patches. For this reason, spatially-based management approaches are recommended to most effectively manage back-reef systems.
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Hulett, Maria. "Analytical Approximations to Predict Performance Measures of Manufacturing Systems with Job Failures and Parallel Processing." FIU Digital Commons, 2010. http://digitalcommons.fiu.edu/etd/167.
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Parallel processing is prevalent in many manufacturing and service systems. Many manufactured products are built and assembled from several components fabricated in parallel lines. An example of this manufacturing system configuration is observed at a manufacturing facility equipped to assemble and test web servers. Characteristics of a typical web server assembly line are: multiple products, job circulation, and paralleling processing. The primary objective of this research was to develop analytical approximations to predict performance measures of manufacturing systems with job failures and parallel processing. The analytical formulations extend previous queueing models used in assembly manufacturing systems in that they can handle serial and different configurations of paralleling processing with multiple product classes, and job circulation due to random part failures. In addition, appropriate correction terms via regression analysis were added to the approximations in order to minimize the gap in the error between the analytical approximation and the simulation models. Markovian and general type manufacturing systems, with multiple product classes, job circulation due to failures, and fork and join systems to model parallel processing were studied. In the Markovian and general case, the approximations without correction terms performed quite well for one and two product problem instances. However, it was observed that the flow time error increased as the number of products and net traffic intensity increased. Therefore, correction terms for single and fork-join stations were developed via regression analysis to deal with more than two products. The numerical comparisons showed that the approximations perform remarkably well when the corrections factors were used in the approximations. In general, the average flow time error was reduced from 38.19% to 5.59% in the Markovian case, and from 26.39% to 7.23% in the general case. All the equations stated in the analytical formulations were implemented as a set of Matlab scripts. By using this set, operations managers of web server assembly lines, manufacturing or other service systems with similar characteristics can estimate different system performance measures, and make judicious decisions - especially setting delivery due dates, capacity planning, and bottleneck mitigation, among others.
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Cadiou, Corentin. "L’impact des grandes structures de l’Univers sur la formation des halos de matière noire et des galaxies How does the cosmic web impact assembly bias? Accurate tracer particles of baryon dynamics in the adaptive mesh refinement code Ramses Galaxy evolution in the metric of the cosmic web Galaxies flowing in the oriented saddle frame of the cosmic web." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS508.
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À grande échelle, la distribution anisotrope de la matière forme un large réseau de vides délimités par des murs qui, avec les filaments présents à leurs intersections, tissent la toile cosmique. La matière qui doit former plus tard les halos de matière noire et leurs galaxies afflue vers les nœuds compacts se situant à l’intersection des filaments et garde dans ce processus une empreinte de la toile cosmique. Dans cette thèse, je développe une extension contrainte de la théorie de l’excursion qui, à l'aide d'un modèle de filament, me permet de montrer que l'environnement anisotrope a un effet sur l'histoire de formation des halos de matière noire. La toile cosmique a donc un rôle dans la formation des halos et de leurs galaxies. Dans un second temps, je construis un modèle qui décrit l'évolution de la toile cosmique (fusion de halos, mais aussi de filaments et de murs) afin de mieux contraindre les modèles de formation de galaxies. Le modèle prédit un excès d'accrétion anisotrope dans les filaments par rapports aux nœuds, biaisant ainsi la formation des galaxies. L'effet de l'accrétion anisotrope sur la formation des galaxies est ensuite étudié à l'aide de simulations hydrodynamiques et d'une nouvelle méthode permettant le suivi précis de l'histoire d'accrétion du gaz. J'y montre que le moment angulaire est transporté efficacement des grandes échelles de la toile cosmique jusque dans les zones internes du halo, où les couples gravitationnels le redistribue au disque de la galaxies et au halo interne<br>The anisotropic large-scale distribution of matter is made of an extended network of voids delimited by sheets, with filaments at their intersection which together form the cosmic web. Matter that will later form dark matter halos and their galaxies flows towards compact nodes at filaments' intersections and in the process, retains the imprint of the cosmic web. In this thesis, I develop a conditional version of the excursion set theory which, using a model of a large-scale filament, enables me to show that anisotropic environment have an impact on the formation history of dark matter halos. The cosmic web then has a role in the formation of halos and their galaxies. I then build a model that is able to capture the evolution of the cosmic web (halo mergers, but also filament and wall mergers) that can be used to better constrain galaxy formation models. The model predicts that an excess of anisotropic accretion is expected in filaments compared to nodes, so that the formation history of galaxies is biased. The effect of anisotropic accretion on galaxy formation is then studied using hydrodynamical simulations and a novel numerical method tailored to accurately follow the accretion history of the gas. I show that the angular momentum is transported efficiently from the cosmic web down to the inner halo, where gravitational torques redistribute it to the disk and the inner halo
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Greer, Peter Brian. "A dual assembly multileaf collimator for radiotherapy." Title page, table of contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phg81659.pdf.
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Bibliography: leaves 241-250. A multileaf collimator for radiation therapy has been designed that splits each leaf bank into two vertically displaced assemblies or levels with each level consisting of alternate leaves and leaf spaces. The radiation profiles transmitted for image formation through the collimator design were investigated to examine their dependence on the collimator design features.
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Wei, Wei [Verfasser]. "Controllable assembly of graphene hybrid materials and their application in energy storage and conversion / Wei Wei." Mainz : Universitätsbibliothek Mainz, 2015. http://d-nb.info/1070042137/34.
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Iredell, J. R. "Molecular export and pilin assembly : TCP biogenesis in Vibrio cholerae /." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phi648.pdf.
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Dhru, Shailini Rajiv. "Process Development For The Fabrication Of Mesoscale Electrostatic Valve Assembly." Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4244.
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This study concentrates on two of the main processes involved in the fabrication of electrostatic valve assembly, thick resist photolithography and wet chemical etching of a polyamide film. The electrostatic valve has different orifice diameters of 25, 50, 75 and 100 μm. These orifice holes are to be etched in the silicon wafer with deep reactive ion etching. The photolithography process is developed to build a mask of 15 μm thick resist pattern on silicon wafer. This photo layer acts as a mask for deep reactive ion etching. Wet chemical etching process is developed to etch kapton polyamide film. This etched film is used as a stand off, gap between two electrodes of the electrostatic valve assembly. The criterion is to develop the processed using standard industry tools. Pre post etch effects, such as, surface roughness, etching pattern, critical dimensions on the samples are measured with Veeco profilometer.<br>M.S.<br>Other<br>Engineering and Computer Science<br>Electrical Engineering MSEE
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Bajic, Mirko M. "Design of dynamic cellular manufacturing systems." Title page, abstract and contents only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phb165.pdf.
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Bibliography: leaves 172-184. An analytical approach to the integrated problems of designing the dynamic cellular manufacturing systems layout concurrently with its material flow (handling) requirements, in such a manner that minimises the material handling within the system. The proposed strategy encourages the design of a dynamic layout to identify simultaneously the machine groups, economical machine distribution, and intracell and intercell layouts.
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Gamble, Whitney Greer. ""If Christ fulfilled the law, we are not bound" : the Westminster Assembly Against English Antinomian Soteriology, 1643-1647." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/10585.
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This thesis analyses how and why the Westminster Assembly (1643-1653), the Long Parliament’s advisory committee for religious matters, attempted to suppress antinomianism, one of the fastest-growing radical religious movements of the early seventeenth century. The Assembly addressed antinomianism in its dual capacity as an arm of Parliament and, in its own self-understanding, as a body of theologians tasked with religious reformation. In the eyes of the Assembly, antinomianism presented a two-fold threat. Socially, antinomianism had the potential to bring anarchy and disorder: the Assembly responded to this threat by examining antinomian ministers, forming its own antinomian committee, and liaising with Parliament to determine whether antinomians should be branded as heretics with concomitant civil punishment. Theologically, for the Assembly, antinomianism encompassed more than simply the belief that obligation to the Ten Commandments had passed away; it contained a complex structure of soteriology that was fundamentally at odds with the Reformed tradition. Working in the overarching backdrop of the rise of English Arminianism, the divines debated soteriological questions raised by antinomianism, issues at the heart of the Reformation such as: the relationship between the Old and New Testaments, the continued effectiveness of the moral law, the nature of Christ’s propitiatory work of redemption, the role and timing of justifying faith, and the relationship between sanctification and justification. The Assembly’s 1643 debates over antinomian theology, conducted as it revised the Thirty-nine Articles, produced revised Articles, which formed the foundation for the Assembly’s 1646 Confession of Faith. The Assembly then used the Confession of Faith to present a concise but comprehensive refutation of antinomian theology. The study uncovers the significance of antinomianism for contextualising the Assembly’s debates, and thus advances and nuances current perception of both the Westminster Assembly and English antinomianism. Analysis of debates carried out on the floor of the Assembly provoked by antinomian theology reveals that, while the divines as a whole disagreed with antinomian tenets, they were far from united in their understanding of basic soteriological definitions and were also divided over the best way to thwart antinomianism. A detailed investigation of this state of affairs enhances interpretation of the Assembly’s documents, such as the Confession of Faith and Larger and Shorter Catechisms, which in and of themselves do not reveal the theological uncertainties and tensions present in the Assembly. The study also offers a new example of the Assembly functioning as a regulatory body. This thesis draws on a substantial new pool of primary material: The Minutes and Papers of the Westminster Assembly (edited by Chad van Dixhoorn, OUP 2012, 3200 pages), the first full critical edition of the Assembly’s debates; also, the first volume of Assembly member John Lightfoot’s journal, recently transcribed, which supplies the only record of crucial exchanges between the Assembly and antinomian theologians. A major contribution of this thesis, working with these new resources, is to demonstrate how the Assembly interacted far more with antinomianism than previous scholars have thought. The thesis breaks new ground by using both theological and historical methods to provide a fine-grained contextual account of the Assembly’s debates and actions against antinomianism.
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Idol, Anita. "Ideology, power and the terminally ill : a discourse analytic study on the debate in the South Australian House of Assembly on voluntary euthanasia /." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09ARPS/09arpsi21.pdf.
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Chen, Ting-Wen [Verfasser], Stefan [Akademischer Betreuer] Scheu, Stefan [Gutachter] Scheu, and Holger [Gutachter] Kreft. "Assembly processes in soil animal communities: Integrating phylogeny and trait-based approaches / Ting-Wen Chen ; Gutachter: Stefan Scheu, Holger Kreft ; Betreuer: Stefan Scheu." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://d-nb.info/1154307476/34.
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Jain, Rahul. "Formation of Aminosilane and Thiol Monolayers on Semiconductor Surfaces and Bulk Wet Etching of III--V Semiconductors." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/255196.
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Continuous scaling down of the dimensions of electronic devices has made present day computers more powerful. In the front end of line, the minimum lateral dimensions in a transistor have shrunk from 45 nm in 2007 to 22 nm currently, and the gate oxide film thickness is two to three monolayers. This reduction in dimensions makes surface preparation an increasingly important part of the device fabrication process. The atoms or molecules that terminate surfaces function as passivation layers, diffusion barriers, and nucleation layers. In the back end of line, metal layers are deposited to connect transistors. We demonstrate a reproducible process that deposits a monolayer of aminopropyltrimethoxysilane molecules less than one nanometer thick on a silicon dioxide surface. The monolayer contains a high density of amine groups that can be used to deposit Pd and Ni and subsequently Co and Cu to serve as the nucleation layer in an electroless metal deposition process. Because of the shrinking device dimensions, there is a need to find new transistor channel materials that have high electron mobilities along with narrow band gaps to reduce power consumption. Compound III--V channel materials are candidates to enable increased performance and reduced power consumption at the current scaled geometries. But many challenges remain for such high mobility materials to be realized in high volume manufacturing. For instance, low defect density (1E7 /cm²) III--V and Ge on Si is the most fundamental issue to overcome before high mobility materials become practical. Unlike Si, dry etching of III-V semiconductor surfaces is believed to be difficult and uncontrollable. Therefore, new wet etching chemistries are needed. Si has been known to passivate by etching in hydrofluoric acid, but similar treatments on III--Vs are known to temporarily hydrogen passivate the surfaces. However, any subsequent exposure to the ambient reoxidizes the surface, resulting in a chemically unstable and high defect density interface. This work compares old and new wet etching chemistries and investigates new methods of passivating the III--V semiconductors.
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Oesterle, Jonathan. "Holistic approach to designing hybrid assembly lines A comparative study of Multi-Objective Algorithms for the Assembly Line Balancing and Equipment Selection Problem under consideration of Product Design Alternatives Evaluation of the influence of dominance rules for the assembly line design problem under consideration of product design alternatives Hybrid Multi-objective Optimization Method for Solving Simultaneously the line Balancing, Equipment and Buffer Sizing Problems for Hybrid Assembly Systems Comparison of Multiobjective Algorithms for the Assembly Line Balancing Design Problem Efficient multi-objective optimization method for the mixed-model-line assembly line design problem Detaillierungsgrad von Simulationsmodellen Rechnergestützte Austaktung einer Mixed-Model Line. Der Weg zur optimalen Austaktung." Thesis, Troyes, 2017. http://www.theses.fr/2017TROY0012.
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Le travail présenté dans cette thèse concerne la formulation et la résolution de deux problèmes d'optimisation multi-objectifs. Ces problèmes de décision, liés à une approche holistique, ont pour but de sélectionner la meilleure configuration « produit/ligne d’assemblage » à partir d'un ensemble de design produits, et de ressources. Concernant le premier problème, un modèle de coût a été développé afin de traduire les interdépendances complexes entre la sélection d’un design produit et les caractéristiques des ressources. Une étude empirique est proposée et vise à comparer, selon plusieurs indicateurs de qualité multi-objectifs, différentes méthodes de résolution - comprenant des algorithmes génétiques, de colonies de fourmis, d’optimisation par essaims particulaires, des chauves-souris, de recherche du coucou et de pollinisation des fleurs. Plusieurs règles de dominance et une recherche locale spécifique au problème ont été appliquées aux méthodes de résolution les plus prometteuses. Concernant le second problème, qui se penche également sur le dimensionnement des stocks tampons, les méthodes de résolution sont à un modèle de simulation à événements discrets, dont la fonction première est l’évaluation des valeurs des différentes fonctions objectives. L’approche holistique associée aux deux problèmes a été validée avec deux cas industriels<br>The work presented in this thesis concerns the formulation and the resolution of two holistic multi-objective optimization problems associated with the selection of the best product and hybrid assembly line configuration out of a set of products, processes and resources alternatives. Regarding the first problem, a cost model was developed in order to translate the complex interdependencies between the selection of specific product designs, processes and resources characteristics. An empirical study is proposed, which aimed at comparing, according to several multi-objective quality indicators, various resolution methods – including variants of evolutionary algorithms, ant colony optimization, particle swarm optimization, bat algorithms, cuckoo search algorithms, and flower-pollination algorithms. Several dominance rules and a problem-specific local search were applied to the most promising resolution methods. Regarding the second problem, which also considers the buffer sizing, the developed algorithms were enhanced with a genetic discrete-event simulation model, whose primary function is to evaluate the value of the various objective functions. The demonstration of the associated resolution frameworks for both problems was validated through two industrial-cases
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Blell, Rebecca. "Microfibrillated cellulose based nanomaterials." Thesis, Strasbourg, 2012. http://www.theses.fr/2012STRAE023.
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La cellulose étant l'un des biopolymères les plus abondants, elle est employée dans ce travail de thèse sous sa forme nano-fibrille (2 à 5nm de diamètre et plusieurs microns de long) pour préparer des nanomatériaux durables. Les microfibrilles de cellulose (MFC) chargées positivement ou négativement sont assemblées en couches minces dans ces nanomatériaux par la méthode « Layer by Layer » (LbL) par trempage, pulvérisation ou spin assisté. Les différences entre ces films LbL à base de MFC et les films LbL à base de polymères standards sont discutées brièvement et sont reliées à la forme nanofibrillaire de la cellulose. Les MFC réagissent comme des nano-objets anisotropes et rigides. Les films LbL de MFC sont ensuite intégrés à des membranes de séparation, entre la couche polymérique de séparation et le support poreux, pour améliorer le débit à travers ces membranes. Ces films minces sont également déposés sur des aérogels de cellulose pour améliorer la stabilité de ces aérogels en milieu aqueux. Dans les deux applications, les résultats était encouragent et montre une validation de principe<br>Cellulose, one of the most abundant biopolymers, is used in this PhD work in its nanofibrillated form, 2-5 nm in diameter and microns long, to prepare sustainable nanomaterials. Both positively and negatively charged microfibrillated celluloses (MFC) are assembled in these nanomaterials using the versatile Layer by Layer (LbL) assembly methods: dipping, spray assisted-deposition and spin-assisted deposition. A brief comparison between the MFC based LbL assembled films and the standard polymeric LbL films is carried out. Thedifferences between the two species are related to the fibrillar form of cellulose. MFC behaves like rigid anisotropic nano-objects. MFC LbL assembled films are then integrated in separation membranes between active polymeric separation layers and a mechanically stable porous support to improve the flux through these membranes. MFC LbL assembled films are also coated on cellulosic aerogels to improve the wet stability of these aerogels. In both cases, results were encouraging and showed a proof of concept
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Darwich, Samer. "Colloidal Gold Nanoparticules : A study of their Drying-Mediated Assembly in Mesoscale Aggregation Patterns and of their AFM Assisted Nanomanipulation on Model Solid Surfaces." Phd thesis, Université de Haute Alsace - Mulhouse, 2011. http://tel.archives-ouvertes.fr/tel-00718640.
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This work deals with the study of the drying-mediated assembly of colloidal gold nanoparticles (Au NPs) in mesoscale aggregation patterns and their manipulation by atomic force microscopy (AFM) on model surfaces. The assembly of NPs in mesoscale and complex aggregation patterns assisted by the wetting and the drying of complex fluids (suspensions of NPs, NPs/biopolymers mixed solutions) on homogeneous and heterogeneous molecular surfaces was studied. This issue is important, both for understanding fundamental processes of self-organization, and for generating new functional mesostructures. The drying of complex fluids often leads to the emergence of highly complex aggregation structures as shown and discussed in this work. The richness and the aesthetics of these complex structures generated by these interfacial phenomena reflect not only the bulk properties of fluids (different sizes and lengths- scales, kinetic changes in state), but more importantly, the coupling between the fluid properties and those of the substrate surface (wetting interactions, confinement, hydrodynamics). In the case of two important heterogeneous fluids which are Au NPs and polysaccharide solutions, these drying-mediated structure formation lead to the genesis of unusually large and highly ramified dendrites aggregation patterns. The growth mechanism and the critical parameters that control the morphogenesis of these complexes structures are addressed in this work. In addition, the aging mechanisms and kinetics of these structures that are metastable and evolve either through direct dislocation via clusters NPs mobility on the surface, or through undulation-induced roughning of the dendrite branches. To better understanding this NPs mobility and thus the dislocation mechanism of the aging, a detailed study based on the manipulation of NPs by atomic force microscopy in tapping mode (AFM) was developed. The threshold dissipated energy to manipulate (move) the NPs can be quantified according to the intrinsic parameters of the particle (size, shape, and chemical nature), the chemical nature and topography of the substrate, and finally the operating and environment conditions. This work enabled us to understand the mechanisms and characterize the critical parameters that may intervene in the dislocation (aging) of NPs-based functional structures, depending on the nature of the environment liquid and the substrate. Finally, this work proposes an approch of evaluation and of monitoring the stability and the aging of these aggregation structures, in particular, those formed from the drying of films and drops of nano-particles solutions (metal nanoparticles, blood: proteins, viruses ...).
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Brázdil, Martin. "Automatické generování UML diagramu tříd." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-235013.
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This master's thesis describes the analysis, design and implementation of an application for automatic generation of UML class diagram. Application is designed as a web service, which provides remote access, especially permanent actuality of generated class diagram. Input of the service is a compiled application written for C# .NET or Java platform. The reader is acquainted with basics of reverse engineering of mentioned platforms and with structure of UML class diagram. Then are these knowledge applied in design and implementation of the service. The main goal is to facilitate and accelerate the activities of software development team members.
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Chalard, Anaïs. "Gélifiants supramoléculaires : synthèse, auto-assemblage, biocompatibilité et application pour la culture de cellules neuronales." Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30035.
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La réparation de lésions cérébrales reste de nos jours un grand challenge de l'ingénierie tissulaire. De même, l'établissement de modèles in vitro représentatifs du tissu cérébral est un sujet qu'il reste à explorer, surtout du point de vue des biomatériaux à utiliser pour soutenir la croissance cellulaire. Ce travail consiste donc au développement d'un biomatériau de type hydrogel adapté à la survie et la croissance de cellules souches neurales humaines. Les gels de type (supra)moléculaires, qui ont la particularité de se former par auto-assemblage, pourraient présenter de nombreux avantages pour ce type d'application. En effet, ils possèdent entre autres des propriétés mécaniques, une biodisponibilité et une structuration aux échelles micro et nanométriques originale qui font de ces gels des supports intéressants pour la culture de neurones. Une famille de gélifiants supramoléculaires a donc été synthétisée, caractérisée et étudiée en tant que support de culture cellulaire. Ces gélifiants sont de type alkylgalactonamide, c'est-à-dire dérivés d'un sucre - le galactose - et d'une chaîne grasse de type alkyle. Ils forment des hydrogels par refroidissement jusqu'à température ambiante d'une solution de gélifiant préalablement portée à haute température. Le refroidissement entraîne la formation de fibres micrométriques par auto-assemblage des molécules. Il a été établi qu'un contrôle précis du refroidissement lors de leur préparation permettait l'obtention d'hydrogels plus homogènes, plus résistants, qui sont compatibles avec les conditions de culture cellulaire et avec des fibres plus longues. Ces hydrogels se sont révélés être biocompatibles, avec une survie et une croissance en trois dimensions des cellules souches neurales humaines en leur sein. Ces dernières développent de longs neurites et expriment des marqueurs de la différentiation neuronale (ß3-tubuline) ou gliale (GFAP), notamment sur l'un des hydrogels. Le dernier aspect de ce travail a consisté à l'utilisation de nouvelles techniques de structuration en 3D des matériaux afin de construire avec ces hydrogels des supports centimétriques avec une forme bien définie. Une technique de filage en voie humide basée sur l'échange de solvants (wet spinning) a alors été mise au point permettant d'extruder l'hydrogel de façon contrôlée et directement à température ambiante. Elle permet d'obtenir de fins filaments de gel très réguliers soutenus par des fibres nanométriques de largeur monodispersée. Des essais ont également été effectués pour appliquer cette technique à l'impression 3D. Au final, ce projet démontre que certains gels moléculaires peuvent présenter des propriétés particulièrement adaptées pour l'ingénierie tissulaire notamment avec des cellules souches neurales et ouvrent également des perspectives dans le domaine de la mise en forme de ces matériaux délicats<br>Nowadays, repairing brain lesions is still one of the main challenges of tissue engineering. Meanwhile, work still has to be done for the creation of representative in vitro brain tissue models, especially when it comes to the biomaterials used to support cell growth. This present work consists in the development of a hydrogel as a biomaterial for the survival and growth of human neural stem cells. These (supra)molecular gels, the property of which is to form by self-assembly, may present many advantages for this kind of application. Indeed, their mechanical properties, their bioavailability and their microstructure - among others - make them interesting candidates for neuron culture. One family of supramolecular gelators have thus been synthesized, characterized and tested as cell culture scaffolds. Those gelators are alkylgalactonamides, which means they are derived from a sugar - the galactose - and an alkyl fatty chain. They form hydrogels by cooling down to room temperature after a first dissolution at high temperature. The cooling provokes the self-assembly of the molecules resulting in the formation of the fibers. During their preparation, it has been found that a controlled cooling rate enabled the formation of more homogeneous and more stable hydrogels that are compatible with cell culture conditions and with longer fibers. These hydrogels have shown a good biocompatibility as well as a good cell survival and a three-dimensional growth of human neural stem cells. The latter grew long neurites and expressed markers of neuronal (ß3-tubulin) and glial differentiation (GFAP), especially on one of the hydrogels. The last part of this work was to use new 3D material structuring techniques in order to further construct well-defined centimetric scaffolds with these hydrogels. A technique of wet spinning based on solvent exchange was developed and enabled the direct and controlled extrusion of the hydrogel at room temperature. Thin and regular hydrogel filaments composed of monodisperse nanometric fibers can thus be obtained. Trials have also been done to apply this method to 3D printing. In the end, this project shows that some molecular gels can display properties particularly adapted for tissue engineering, especially with neural stem cells, and it also opens perspectives for the shaping of these delicate materials
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Paquet, Anne. "Développement d'un nouveau procédé de chemo-épitaxie pour l'alignement des copolymères à blocs." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT023/document.
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Afin de répondre aux demandes constantes de l’industrie micro-électronique pour la réduction des tailles des dispositifs électroniques, de nouvelles techniques de lithographie sont mises au point. Une de ces techniques est l’auto-assemblage dirigé des copolymères à blocs (DSA). Cette technique consiste à utiliser la capacité des copolymères à blocs à s’auto-assembler en nanodomaines (cylindres ou lamelles) pour former des motifs de type contact ou ligne / espace. En l’absence de motifs directionnels, les copolymères à blocs ne possèdent pas d’ordre à longue distance, nécessaire pour toute application type CMOS. Ainsi, deux approches différentes de DSA sont utilisées: la grapho-épitaxie, qui génère une orientation par guidage physique, et la chemo-épitaxie, qui génère une orientation par affinité chimique. Cette dernière permet plus de flexibilité lors de la conception des masques de lithographie puisque les zones actives sont définies à postériori par l’approche « cut last », et est de fait la plus recherchée aujourd’hui pour aligner les copolymères à blocs. Toutefois, les procédés de chemo-épitaxie actuels ont montré leurs limitations pour l’utilisation de copolymères à blocs de haute résolution dit high , dont la période est inférieure à 20 nm, due aux limitations des outils de lithographie conventionnelle utilisés en production.Dans cette thèse, un nouveau procédé de chemo-épitaxie, nommé ACE (Arkema-CEA) spécialement conçu pour l’intégration de copolymères à blocs high est présenté. Dans ce procédé, les guides de chemo-épitaxie sont formés en combinant la lithographie standard et le procédé de lithographie par espaceur. Une sous-couche neutre, permettant l’orientation perpendiculaire du copolymère à blocs, est dans un premier temps déposée entre les espaceurs. Après le retrait des espaceurs, une étape de greffage sélectif a lieu pour obtenir un guide affine. Dans le procédé ACE, la taille finale du guide n’est plus directement définie par lithographie mais elle est plutôt déterminée par la taille de l’espaceur, obtenue en contrôlant l’épaisseur de dépôt. Cette technique permet de s’affranchir des contraintes de la lithographie au niveau des hautes résolutions.Afin de démontrer la faisabilité du procédé ACE, la thèse est divisée en deux axes de recherches. Le premier axe consiste à valider les points critiques du procédé, à savoir le greffage sélectif du guide directionnel entre les motifs formés par la sous-couche neutre et le retrait des espaceurs. Une étude approfondie sur les différentes sous-couches polymères disponibles et les effets des procédés sur celles-ci est réalisée. Le second axe s’intéresse à l’alignement du copolymère à blocs par le procédé ACE. Des fenêtres de procédé permettant d’étudier la stabilité et la reproductibilité du procédé sont obtenues en mesurant la défectivité du copolymère à blocs en fonction de la commensurabilité des motifs de lithographie. L’influence des différents paramètres (conditions de recuit et d’épaisseur du copolymère à blocs, hauteur et CD des espaceurs, …) est étudiée afin d’optimiser le procédé mis en place.Au vu des essais réalisés, le procédé mis en place est un procédé hybride chemo-grapho-épitaxie : la combinaison des guides physiques et chimiques permet l’alignement à longue distance des copolymères à blocs. L’absence de topographie ou la modification de l’affinité chimique du guide entraine une absence ou une modification de l’alignement des blocs. L’optimisation des paramètres permet l’alignement des copolymères à blocs sur de longues distances (plusieurs dizaines de micromètres carré), qui pourront permettre la définition de zone active par l’approche « cut last »<br>In order to offer a solution to constant micro-electronics fab requirements in terms of lithography resolution, new lithography approaches are under study. One of this technic consist of using Block Copolymer capabilities to self-assembled in micro-structures, forming patterns structures like contact (cylinders) and line / space (lamellae). In the absence of any constraint, block copolymer do not own a long range order, useful for any CMOS-type application. Thereby two technics are used to obtain a block alignment: the grapho-epitaxy which align the block copolymer thanks to a physical guide, and the chemo-epitaxy, which align block copolymer thanks to a chemical affinity. Chemo-epitaxy, contrary to graph-epitaxy, offers space saving by aligning the blocs all over the studied field. Today, it is the most used technic. However, the current lithography requirements lead to the integration of high block copolymers whose period are below 20 nm. With this dimension, the current chemo-epitaxy processes are not adapted anymore, due to the resolution limit of the standard lithography tools defining the guides.This thesis aims to introduce a new chemo-epitaxy process flow, called Process ACE,by using LETI 300mm process capability and Arkema’s block copolymer advanced materials. In this new process, chemo-epitaxy guides are formed by combining standard lithography and established spacer patterning process. Spacer patterning technique is an option which, thanks to its aggressive dimensions, allows the integration of high block copolymers. A neutral underlayer, allowing perpendicular bloc copolymer orientation is located between the spacers. After the spacer removal, a selective grafting takes place to obtain an affine guide for one of the block. The final guide size corresponds to the one of the spacer earlier processed.In order to validate the process feasibility the thesis is divided in two parts. The first part investigates the critical process steps, that is to say the affinity guide selective grafting between the patterns form by the neutral underlayer and the spacers removal, by means of an in-depth polymer underlayer study and the process effects on these one’s. The second part focuses on block copolymer alignment with process ACE. Process windows validating the process stability and reproducibility are obtained by measuring block copolymer defectivity as a function of the lithography patterns commensurability. The different parameters effect (block copolymer baking, spacer height and width) is studied in order to optimise the process set up.On the basis of the testis undertaken, the process set up is a hybrid chemo-grapho-epitaxy process. It allows block copolymer long range order thanks to physical and chemical guides involved at the underlayer – block copolymer interface all by allowing a full space occupation of the available space
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Chanteloup, Pierre. "Patrons d'organisation des traits aériens et racinaires en prairies humides : liens avec la production primaire (quantité et qualité)." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00861449.
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Les prairies semi-naturelles constituent des espaces multifonctionnels susceptibles de rendre de nombreux services à la société. Ce sont en particulier des agro-écosystèmes favorables à l'expression d'une grande diversité floristique et faunistique permettant de concilier enjeux écologiques et agronomiques. Ce travail de thèse vise à analyser (i) l'influence des facteurs environnementaux sur l'assemblage des communautés in situ et (ii) les relations entre la structure fonctionnelle des assemblages (i.e. valeurs de traits agrégées et diversité fonctionnelle) et leurs performances (i.e. production de biomasse et digestibilité de cette biomasse). Cette étude s'appuie sur des approches expérimentales et de terrain dans les prairies humides pâturées du Marais Poitevin. Nos résultats montrent des réponses très différentes des traits aériens et racinaires étudiés aux gradients de stress et de perturbation rencontrés dans ces prairies. Ils ont également permis de mettre en évidence l'influence prépondérante des valeurs de traits agrégées sur la fourniture de services écosystémiques (i.e. productivité et digestibilité du fourrage), en accord avec la "Biomass ratio hypothesis" énoncée par Grime. L'influence du niveau de diversité fonctionnelle sur les services rendus par les assemblages varie selon le service considéré. Contrairement aux résultats attendus selon la "Diversity hypothesis" énoncée par Tilman, le niveau de diversité fonctionnelle est lié négativement à la productivité des assemblages. En revanche, un effet positif de la diversité fonctionnelle sur la digestibilité a été mis en évidence. Cette étude a par ailleurs permis de montrer un compromis entre la productivité des assemblages et la digestibilité de la biomasse produite dans ces prairies humides. Ce travail suggère que des outils de diagnostics de la valeur fourragère du couvert peuvent être construits sur la base de la structure fonctionnelle des assemblages, et ce avec un haut niveau de fiabilité. Il met également en avant les bénéfices agronomiques associés à l'hétérogénéité des couverts végétaux rencontrés dans ces prairies.
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Pawar, Samraat Shashikant 1975. "Community assembly, stability and food web structure." 2009. http://hdl.handle.net/2152/18431.
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Natural communities of species embody complex interrelationships between the structure of the interspecific interaction network, dynamics of species' populations, and the stability of the system as a whole. Studying these interrelationships is crucial for understanding the survival of species in nature. In this context, studying the food web (the network of who-eats-whom) embedded in each interaction network is particularly important because trophic interactions are the main channels of energy flow in all ecosystems. Using a combination of mathematical modeling and empirical data analyses, this study explores the interrelationship between food web structure and multi-species coexistence in local communities. Chapter 1 of this thesis places the overall dissertation study in context of the history of research on species interaction networks and food webs. In Chapter 2, I use a population dynamical model to show how the requirements of stable multi-species coexistence results in the emergence of specific, nonrandom configurations of food web structure during community assembly. These structural "signatures" can be used to empirically gauge the importance of interaction-driven dynamical stability constraints in natural communities. In Chapter 3, I extend the model analyzed in Chapter 2 by imposing biologically feasible constraints on its parameters. This is made possible by the allometric scaling between individual metabolism and body size, and the constraints on interspecific trophic interactions due to body size differences between pairs of interacting species. I show that, using this approach, it is possible to interlink three aspects of local communities that have typically been studied in isolation: the species' body mass distribution, the distribution of ratios of body sizes of consumer and resource species (e.g., predator and prey), and certain food web structural features. Some of these features have previously lacked explanatory models. Finally in Chapter 4, using empirical data from nine communities across a range of habitats, I test some theoretical predictions of the previous chapter. The results provide strong evidence that the food web structure of natural communities do indeed exhibit signatures of dynamical stability constraints, and that the model developed in Chapters 2 and 3 is successfully able to predict a number of empirically observed food web structural features.<br>text
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Chiu, Hungyuan, and 邱宏遠. "Design and Implementation of a web-based Shop Floor Control System for assembly industry." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/75705869401774159767.
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碩士<br>國立交通大學<br>資訊管理學程碩士班<br>90<br>For a manufactory, about 70% of its resources are contained in production lines; therefore, having a shop floor control system (SFCS) is the key to the success of a business. Along with the popularity of global enterprise and internet, the traditional centralized SFCS no longer meets global logistics demanding.
To meet customers’ maximum satisfaction is what enterprises have to work for inevitably in the future. No matter the business modality is B2B (business to business) or B2C (business to customers), it is necessary to have a SFCS to satisfy the diverse demanding from customers while dealing with the competitions and challenges in this wed-based era. An e-based (e-SFCS) SFCS provides customers with a web-based SFCS, which satisfies customers’ preference and meets a variety of market demands.
In this thesis, we provide a web-based SFCS to integrate production process relation information real time on-line computer, enterprise resource plans (ERP), supply chain management (SCM) and customer relationship management (CRM). It aims at building up a web-based SFCS, using VB, Java Script and ASP, to spontaneously provide the public with the control production line process real time information openly and clearly, namely, a WYSWYG (What You See is What You Get) SFCS.
Through system integration and Internet, this SFCS introduced here provides both business managers and customers with control production line process real time information and remote control, so as to reduce production costs and trading time, and to gain customers’ trust; furthermore, to win the global enterprise competition. This SFCS is applicable to all the manufacturers in assembly industry, including computers, electronics and telecommunications.
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Hsieh, Ming-Hsien, and 謝明憲. "Using Pro/Toolkit to Develop a Web-based Platform for Automatic Assembly of Modular Products." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/a7z6rz.
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碩士<br>國立臺灣科技大學<br>機械工程系<br>106<br>Traditional parts library uses parts’ images for user reference and drop-down menus for selection of parts’ specifications. It tends to find incorrect product specifications because such a system does not show the shape of the final assembled product. This study aims to solve such a problem found in traditional webpage design by developing a web-based platform featuring automatic assembly specifically for modular products, enabling the user to instantly preview the final assembly and precisely understand the type and appearance of a product.
ASP.NET is used in this study to develop a platform capable of retrieving parts’ parameters and inputting them to the Pro/Toolkit module embedded in Pro/ENGINEER. The following tasks are then undertaken: changing the size and color of the geometric model, generating an engineering drawing for each individual part, and assembling parts through feature IDs and coordinate systems. The final results are transmitted back to the webpage, allowing the user to preview the 3D geometric model of the assembly and the 2D engineering drawings of the parts. The user can also download the relevant files.
User-friendly webpages are designed in this research according to the characteristics of slot-type and section-type modular products, enabling the user to quickly and precisely find products that meet the user’s needs. Connectors and office partitions are included as examples, showcasing the design of an automatic assembly web platform allowing the user to instantly preview modular products.
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Yao, Li-Wei, and 姚力維. "Statistical Analysis of the Data from University Assembly Meetings and the Opinion Web System of the National Taiwan University." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/11915268728746744236.
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碩士<br>國立臺灣大學<br>農藝學研究所<br>102<br>Technology research firm International Data Corporation estimates that the growth rate of the annual amount of global data is 50%. Data has doubled every two years. It is very important to use the techniques and methods of extracting meaningful information from data. There are many other kinds of data in the world such as audio, video, PDF, and web pages, in addition to text or data stored in the database.
This study is focused on the data from web pages on internet: University Assembly Meetings from National Taiwan University between 2001 and 2012 and the Opinion Web System of the National Taiwan University between 2005 and 2012. The methodology involves collection, transcription, and quantitation of the web data which were analyzed by statistical methods such as descriptive statistics, graphic presentation, analysis of variance, multiple comparisons, chi-square test, and nonparametric procedure. Our study objectives are to compare processing duration of proposed bills sponsored by different categories of sponsors for University Assembly Meetings and to compare the processing duration and popularity of opinions by different categories of opinion areas and administrative units for the Opinion Web System of the National Taiwan University.
The results show that the statistical significant differences were found in proposed bills and processing efficiency among administrative units, faculty and students in University Assembly Meetings from National Taiwan University. The mean processing time of the proposed bills sponsored of faculty and students is statistically longer than that sponsored by administrative units. It seriously affects the interest of faculty and students. For the opinion web system of the National Taiwan University, we compared the processing duration and popularity between categories of opinions, subjects of opinions, and identification classes of the proposed of the opinions. Except for the winter and summer vacations, an increasing trend is observed in opinion volume.
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Lin, Ying-Chieh, and 林英傑. "A Comparative Study on Data Exchanging System Using Web Services—Implementation on a Semiconductor Assembly and Final Testing Firm—." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/15064915237366630851.
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碩士<br>中原大學<br>資訊管理研究所<br>94<br>Taiwan's economic competitiveness is based on a "fast" basis for a long time. However, as the market environment changes, scope of enterprise changes and business patterns change, such an advantage has been questioned, enterprises are often unable to reflect the changes brought by information technology to the rapid market changes, thus losing the opportunity to enter new markets. As semiconductor industry is one of the 2 trillion industry (semiconductors, TFT-LCD industries) has no exceptions, Zero time data exchange, data accuracy and real-time response are the competitive advantages for enterprises to create new business opportunities, as the market tend to be specialized the structure of semiconductor industry has changed from the vertical integration (Integrated Device Manufacture) approach into vertical specialization trends. So as a result the mechanisms of implementation and collaboration between enterprise and its downstream manufacturers will be a key factor toward the success.
The rapid changes in information technology often leading the enterprises to spend large amount of money to integrate their internal and external information systems and resources, but the result often resolved the current problems and created another new problem. After observation and understanding the case in depth of industry's phenomenon through this research, found that at the present stage the platform for exchanging wafer map information between semiconductor industries is still having lots of problems and much remains to be breakthroughs, such as : system instituted by high costs and less flexibility, can not real-time response to client side and provide immediate response mechanisms, no integrated standards and so no.
This is an exploratory research, the main purpose of the research is to present the new Information Technology「Web Services」, through its cross-platform integration advantages, open standards and simplification advantages to build up a systematic platform for exchanging the related semiconductor wafer map informations and compare with the current industry's platform and find out the advantages and disadvantages.
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Yang, Hung-Liang, and 楊宏良. "The Implementation of Web-based Course Assembly System Based on Concept Learning and SCORM－Take Elementary Geometry Concept as an Example." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/40831496678600487683.
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碩士<br>臺北市立教育大學<br>數學資訊教育學系數學資訊教育教學碩士學位<br>96<br>The current courses authoring tools always forcus on its powerful editing features, but the complex operation makes a great pressure on teachers and hinder the development of E-learning materials. And the lack of theoretical study of the courses may not get a good teaching results. Secondly, the un-standardize teaching materials isn’t easy to share or exchange. All the above, cause the current obstruction of E-learning The concept is a tool and basic unit of human thinking, understanding and learning. Any knowledge of the subject is constructed by a series of concepts. The key of children’s learning process to acquire knowledge depends on whether the concept is obtained. Thus, this study develops a SCORM compatible and web-based course assembly system base on concept learning.
The system function includes concept conducting, teaching materials assembling, full multimedia files supported and course import&export. In this study, take the geometric concepts in elementary mathematics as an example, is to design a web-based course assembly system based on the concept learning and courses scaffolding, with multimedia files supported. It helps children change concepts into a part of knowledge through the presentation of Concept Map. It allows teachers to produce teaching materials with a easy way and reduce the burden on teachers. At the same time, providing courses import function and export SCORM course package, Reduce the costs of developing time and make teaching materials more reuseable.
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Lee, Yi-Ming, and 李溢明. "The Application of PDML in Establishing the Web-based Analysis Platform of Concurrent Engineering ：A Casestudy of Product Assembly and Disassembly." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/04363895706798640812.
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碩士<br>國立高雄第一科技大學<br>機械與自動化工程所<br>92<br>Internet techniques are indispensable tools to facilitate the design reviews and the data management in the product concurrent engineering. This thesis uses the deduction of assembly and disassembly sequences in the post-manufacturing analysis as a vehicle to illustrate the concept of the web-based Concurrent Design Analysis via Internet. A web-based analysis tool includes three parts: a standardized data model, analyzing modules, and an Internet interface. The post-manufacturing analysis includes product service and product recycling, which involves product disassembly and reassembly. This study adopts the Relationship Matrix (RM) to represent the product layout structure, and applies the PDML (Product Data Markup Language) represent the standardized data model. PDML combines the XML（eXtensible Markup Language） and the STEP techniques to facilitate the product data management. A Matlab analysis module for product assembly and disassembly sequencing is designed using RM and the inference rules. The STEP-based product data model and the analysis module are then integrated via VS.NET to realize the on-line design reviewer. At last, this thesis describes the designed web-base system, OAPAD (Online Analysis of Product Assembly and Disassembly, and a case study to illustrate the feasibility of the proposed structure.
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Sousa, Pedro Emanuel Oliveira Teixeira de. "xGen: Plataforma de geração de código." Master's thesis, 2019. http://hdl.handle.net/10316/88079.
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Dissertação de Mestrado em Engenharia Informática apresentada à Faculdade de Ciências e Tecnologia<br>O trabalho realizado neste estágio insere-se em dois projetos. O xGen, que resulta do trabalho desenvolvido pelo Laboratório de Informática e Sistemas do Instituto Pedro Nunes para aplicação interna, e o VirtualLab, resultante do trabalho realizado pelo laboratório para a empresa Pharmilab.O projeto VirtualLab tem como objetivo desenvolver uma plataforma web que integra o processo de trabalho atual da Pharmilab para a produção de relatórios de segurança de produtos cosméticos. A Pharmilab passou a conseguir gerir toda a informação acerca dos produtos que analisa através da plataforma e utilizá-la para gerar esses mesmos relatórios, automatizando parte do seu processo que até então era manual.O projeto xGen visa o desenvolvimento de uma plataforma web que tem o propósito de otimizar o processo de desenvolvimento de software do laboratório recorrendo a geração de código. Acredita-se que esta mudança de paradigma levará rapidamente a uma forte redução do tempo despendido pelos programadores na produção de código repetitivo, ainda que distinto, e ao incremento da qualidade global do software produzido, quer por via de uma maior padronização dos componentes desenvolvidos, quer pelo facto de permitir os programadores terem mais tempo disponível para os processos de engenharia. O laboratório passou a ter uma ferramenta interna de trabalho que permite que os programadores desenhem os sistemas a desenvolver através de uma aplicação web e com um clique de rato obtenham um conjunto de código compilável de um software pronto para demonstração e que serve de fundação para a fase de implementação. A ferramenta deve ter também a capacidade de gerar um conjunto de documentação base do software gerado, de modo a otimizar também esta componente do processo de desenvolvimento.Antes de dar início à implementação das plataformas procedeu-se ao estudo do estado da arte, confirmando-se o carácter inovador de ambas as plataformas e onde se identificaram as tecnologias a usar para o desenvolvimento da componente de geração de documentos e da geração de código.A partir deste conhecimento, o estagiário propôs uma solução arquitetural para cada uma das plataformas, tendo sido definidos: padrão arquitetural, componentes do sistema, as interações que correm entre si, modelos de dados dos sistemas e tecnologias a utilizar.Finalmente, procedeu-se à implementação de ambas as soluções, estando a plataforma VirtualLab já em plena utilização e a xGen em processo de adoção em alguns projetos piloto. De referir que, no âmbito deste estágio, o desenvolvimento da plataforma xGen não poderia ser feito com o mesmo nível de qualidade sem a utilização de outros projetos que lhe servem de referência. Foi com este objetivo em mente que se decidiu a inclusão do projeto VirtualLab no âmbito do estágio, pelo facto de prestar um forte contributo na identificação dos padrões a utilizar no xGen e também na reutilização de conhecimento para a componente de geração de documentação. Paralelamente o estagiário acompanhou o desenvolvimento de outros projetos a decorrer no laboratório para a identificação das várias características comuns entre si.Aquando o término do estágio, o estagiário cumpriu com todos os objetivos a que se propôs, podendo já observar-se as vantagens da plataforma VirtualLab no processo do cliente, através da redução até 80% do tempo consumido na produção de relatórios e da xGen, onde rapidamente é possível criar um conjunto de ficheiros base que diminuem o tempo inicial de execução dos projetos. Paralelamente a este documento, foi também produzido um conjunto de outros documentos anexos que especificam os detalhes da implementação dos projetos.<br>This internship is part of two projects. xGen, which is the result of the work performed by the Laboratory for Informatics and Systems of Instituto Pedro Nunes for internal use, and VirtualLab, which results from the laboratory work performed for the company Pharmilab.The VirtualLab project aims to develop a web platform that integrates the already existent Pharmilab’s process of producing safety assessment reports about cosmetic products. Pharmilab is now able to manage all the information about the products that they analyze through the platform and they can use it to generate the respective documents, automating part of their process that was manual until then.The xGen project aims to develop a web platform that has the purpose of optimizing the software development process within the laboratory recurring to code generation. It is believed that this paradigm shift will quickly lead to a significant reduction in the time spent by programmers producing repetitive, but distinct, code and it will lead to the increased overall quality of the software produced, with greater assurance of standardization of the implemented components and allowing programmers to have more time available for engineering processes. The laboratory now has an internal working tool that allows programmers to design systems through a web application that, through a simple mouse click, empowers them to obtain a set of compiled code ready for demonstration, which serves as the foundation for the development implementation phase. This tool must also be able to generate a set of base documentation about the generated software, with the additional goal of optimizing this stage of the development process.Prior to the platforms’ implementation, the state of the art was studied, confirming the innovative characteristic of both platforms and concluding which technologies were to be used for the development of the document generation and code generation components.From this knowledge, the intern proposed an architectural solution for each platform, specifying the: architectural pattern, system components and interactions that happen between them, data models of the systems and technologies to use.Finally, both solutions were implemented, with the VirtualLab platform being already in full use and xGen being adopted in some pilot projects. Under this internship, the development of the xGen platform couldn’t be done with the same quality level without studying other reference projects. It is with this objective in mind that it was decided to include the VirtualLab project in the scope of the internship, due to the strong contribution it provided in identifying the standards to be used in xGen and also in reusing the acquired knowledge for the documentation generation component. At the same time, the intern accompanied the development of other projects under development in the laboratory to identify several common characteristics among themselves.Along with the completion of the internship, the intern satisfied all the objectives, being already possible to observe the advantages of the VirtualLab platform in the client processes, which reduces up to 80% of the time consumed in the production of reports, and of the xGen, where it is possible to quickly create a set of base files that decrease the initial execution time of the projects. Along with this document, a set of documents was also produced that specifies some particularities the projects.
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Greig, Hamish S. "Community assembly and food web interactions across pond permanence gradients : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Ecology in the University of Canterbury /." 2008. http://hdl.handle.net/10092/1585.
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柯羿如. "Study on the Coating Protective Equipment of Wet Process Assembly and Disassembly." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/72744303109601848851.
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碩士<br>逢甲大學<br>機械與電腦輔助工程學系<br>104<br>To cope with the speedy changing industry and society, the dependence of chemistry of emerging industry has grown up rapidly. Due to the long-term usage of chemical substances which are applied in production line in many industries, e.g., semiconductor industry, it is easy to cause occupational injuries and hazards during the machine maintenance or accessory replacement. Most of them are caused by human error. For example, operators with poor protective equipment do not follow the SOP and disassemble the pipeline without waiting for setting down. It leads to the hazardous liquid leak or splash.
The purpose of this study is to improve the workplace & people safety during assemble & disassemble operation. In order to attain the object, the invention of protective equipment which is suitable for the situation described above, protective measures of relative industries are gained and discussed. Meanwhile, the principle and testing methods of protective clothing are applied to verify the protection effectiveness of the invention, and the product embodiment is examined through the practical application.
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Jacobsen, Matthew Michael. "Peptide processing via silk-inspired spinning enables assembly of multifunctional protein alloy fibers." Thesis, 2017. https://hdl.handle.net/2144/23565.
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Diverse fiber-forming proteins are found in nature that accomplish a wide range of functions including signaling, cell adhesion, and mechanical support. Unique sequence characteristics of these proteins often lead to their specialized roles. However, these proteins also share a common organizational hierarchy in primary and secondary structures that strongly influence both their intramolecular folding and intermolecular interactions. Based on what is known regarding protein fiber assembly of silk peptides, shear-induced elongation of the molecular strands drives interchain secondary structure crystallization via anisotropic alignment, which creates a molecular superstructure that forms the basis a fiber network. In this work, the hypothesis is this type of protein fiber assembly is not unique to silk sequences and that other proteins can be spun into fibers in similar fashion while maintaining unique functionality given by their specialized amino acid sequences such as RGD, GX1X2, and so forth. This was investigated by modeling the manner in which hydrophobic and hydrophilic blocks of amino acids create interacting secondary structures at the chain level when exposed to shear. It was determined computationally and then verified experimentally that fiber spinning success is most likely to occur after shear processing if the protein sequence exhibits a balance of hydrophobic and hydrophilic content and has sufficient length. Applied to the biological scale, both pure and mixed solutions of proteins such as fibronectin, laminin, and silk fibroin were spun into fibers. In particular, alloy protein fibers of silk fibroin mixed with fibronectin exhibited the characteristic mechanical integrity of silk and the bioactivity of fibronectin. This simple method of creating protein fibers with hybrid characteristics is significantly faster, less expensive, and less technically intensive than chimeric protein production, which purports to do the same. This finding also provides insight into a fundamental means by which protein fibers may be assembled in vivo by taking advantage of the thermodynamically favorable assembly of peptide sequences at the chain level under proper molecular orientation. Taken together, a high throughput means of producing a wide-range of pure and hybrid protein fibers has been developed for various biological applications and research investigations into the fibrous elements of biology.
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SHUKLA, VISHWESH. "A SIMPLE, FACILE APPROACH FOR THE LARGE SCALE SYNTHESIS OF CUO NANORODS, NANOFLOWERS AND NANOWIRES USING WET CHEMICAL ROUTE AND ITS GROWTH MECHANISM." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15072.
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We report the large scale synthesis of nanostructured copper oxide (CuO)
synthesized by cost effective and simple wet chemical route. Nanorods and
Nanoflowers and Nanowires have been uniformly grown on Cu foil by the
oxidation of Copper. Their growth mechanism has been reported to understand the
optimal parameters for controlled growth via a simple coordination self-assembly
method on substrates. The composition, morphology and structural identity have
been characterized by Scanning Electron Microscope (SEM), X-ray Diffraction
(XRD), Energy-Dispersive X-ray spectroscopy (EDX), Fourier Transform Infrared
Spectroscopy (FTIR) and Transmission Electron Microscope (TEM). These
characterizations clearly show formation of CuO nanorods and nanoflowers having
diameter in the range of 16-30 nm. The synthesized structures will have the
potential applications as gas sensors, an active electrode material for Li-ion
batteries, heterogeneous catalysts, field emission [FE] emitters and solar cells etc.
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Wei, Tiandi [Verfasser]. "Homology modeling of toll-like receptor ligand-binding domains : a leucine-rich repeat assembly approach / vorgelegt von Tiandi Wei." 2010. http://d-nb.info/1003585914/34.
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Cho, Chungyeon. "A Study of Porous Transitions of Layer-By-Layer Thin Films and Patterning Multilayers." Thesis, 2013. http://hdl.handle.net/1969.1/151024.
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This thesis research focuses on fundamental understanding regarding the morphological transitions of weak polyelectrolyte multilayers (PEMs) formed by the layer-by-layer (LbL) electrostatic assembly of oppositely charged polymers.
he first part of this thesis focuses on patterning polyelectrolyte multilayers that are able to undergo transitions from continuous films to porous materials by using hydrogel stamps. The stamping process is able to locally etch and pattern the porous transition in the LbL films by using reactive wet stamping (r-WETS). It was found that r-WETS of PEMs can also enable the modification of chemical functionality.
The second part is an investigation about morphological changes of weak polyelectrolyte multilayers assembled with PAH and PAA using r-WETS in which hydrogel stamp material was soaked into various salt solutions and then applied to the LbL films. Also, in this study we presented a novel strategy to create a continuous gradient structure in thickness or porosity along the lateral direction of the thin films using concentration gradient salt stamping.
The third part is an investigation regarding the mechanism of the transition from a continuous morphology to a porous morphology within weak polyelectrolyte multilayers. These morphological changes were able to be created by both acidic and basic post-assembly treatments, showing various morphological transitions from the introduction of porosity to the collapse of these porous structures and the eventual dissolution of the films.
A similar observation of morphological transitions in weak polyelectrolyte multilayers was obtained by applying an electric field to the films in the fourth part of this thesis. Exposure to an electric field resulted in the creation of a porous structure, which can be ascribed to local changes in pH and subsequent structural rearrangements of the weak polyelectrolyte constituents.
The final part of this thesis is to make PEMs into nanostructured matrices for inorganic synthesis. Multilayers possessing ion-exchangeable carboxylic acid groups were used for binding metal catalysts such as platinum (Pt) nanoparticles (NPs) within the film. Therefore, polyelectrolyte multilayers were able to stabilize catalytic Pt NPs in order to increase the useful time of catalyst materials suitable for use in proton exchange membrane fuel cells.
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YANG, ZI-MING, and 楊子明. "Properties of Self-Assembled-Monolayer Encapsulated Electroless Copper Nanowires Fabricated by Using an All-Wet Process." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/64909285469077125456.
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碩士<br>逢甲大學<br>材料科學與工程學系<br>105<br>Currently, sputter deposited TaN/Ta and electrochemically plated Cu metallization layers are the key interconnection thin-film materials for integrated circuits. However, in the face of future technology nodes scaling continues to decline, this wet and dry combination of copper inlay process has faced many difficulties (such as the barrier layer is too thick). The electroless plating cobalt alloy barrier layer is limit by the catalytic particles (3 nm) size.
In this paper, SC-1 chemical solution was used to prepare the sample, and the sample was filled with hydroxyl group to facilitate the growth of APTMS. The APTMS solution on the surface of the sample was treated with SC-1 solution. Modified, so that it can be successfully to catch Ni catalytic seeds, and deposed electroless copper film.
This process was subsequently introduced into the trench wafer (500 nm deep, line width is 100 nm and a line length is 25 μm). After completed to fill the grooved sample we uesd CMP to remove the surface copper of the sample, get a complete filled copper wire, and then used the weight percentage of 10% hydrogen peroxide to treat the copper film surface, and growth of APTMS-SAM on the copper film surface, and ultimately to obtain the complete coating of APTMS-SAM copper wire sample.
Finally, CCS experiments were carried out on pure copper wire, APTMS-SAM partially-capping copper wire and APTMS-SAM all-capping copper wire, respectively. The collapse time of the three sample was 580 s, 1650 s and 2850 s. The results confirmed that APTMS -SAM does increase the reliability of copper wires.
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Yeh, Shu-hung, and 葉書宏. "Semiconductor Assembly Manufacturing Industry Control of Volatile Organic Compounds by Wet Scrubbing and Advanced Oxidation Technology--Case Feasibility Studies of Full-Scale Plant--." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/67700774020785291383.
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碩士<br>國立中山大學<br>海洋環境及工程學系研究所<br>98<br>Taiwan semiconductor manufacturing industry ranks top in the world for the production and has a great contribution to Taiwan economics. However, the industry produces a significant amount of volatile organic compounds (VOC) into the air. According to EPA of Taiwan, the annual VOC emission amounts from the industry were approximately five thousand tons, a major stationary source of VOC emission. The EPA has implemented the air pollution control regulation for semiconductor industry, in which the VOC emission amount should be below &lt;0.6 kg/hr or the removal efficiency should be >90% for each factory . The conventional control technologies for the VOC emissions was concentration using zeolite followed by thermal oxidation. However, the high boiling points of VOC is difficult to desorbed from zeolite and it required the water to wash the zeolite. This would reduce the removal efficiency of zeolite. This control processes have high operation cost and may produce byproducts required for further treatment.
Advanced chemical oxidation process (AOP) recently has gained tremendous attention as an emerging control technology of VOC due to low treatment cost and few oxidation byproducts. The major oxidant of the technology is believed to be hydroxyl radicals, which can react organic compounds at very reaction rates. A majority of VOC emissions from the semiconductor industry are highly soluble and can be easily dissolved into water by scrubbing process. However, the wet scrubbing process can produce a significant amount of wastewater.
The objective of this study was to investigate the feasibility of using wet scrubber and O3/H2O2/catalyst process on controlling the VOC emissions from the semiconductor manufacturing industry. A full scale of process of 1000 CMM flowrate was designed and built along with a semiconductor packaging facility. Results showed that major compounds of the VOC exhaust were iso-propanol, PGMEA, PGME and methyl ethyl keton. The inlet concentrations of THC significantly varied from 50 to 600 ppmv as methane. The AOP process can removed 90-95% of VOCs and the scrubbing water can be recycled and reused at least 95%. The capital cost of the system was NT20,000,000 with the annual operation cost of NT120,000 which was only 36-40% of it for the concentration using zeolite followed by thermal oxidation.
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鄭郁勳. "Feasibility of Using Self-assembled Monolayers to Derive All-wet Copper Metallization for Through-Silicon Vias (TSVs)." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/36904464503846522416.
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Fischer, Sebastian [Verfasser]. "The LRS double prism assembly to be flown on the James Webb Space Telescope and host galaxies of active galactic nuclei in the near infrared / vorgelegt von Sebastian Fischer." 2008. http://d-nb.info/992129273/34.
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