Dissertations / Theses on the topic 'Patterns'
To see the other types of publications on this topic, follow the link: Patterns.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Patterns.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Lu, Jing. "From sequential patterns to concurrent branch patterns : a new post sequential patterns mining approach." Thesis, University of Bedfordshire, 2006. http://hdl.handle.net/10547/556399.
Full textAbstract:
Sequential patterns mining is an important pattern discovery technique used to identify frequently observed sequential occurrence of items across ordered transactions over time. It has been intensively studied and there exists a great diversity of algorithms. However, there is a major problem associated with the conventional sequential patterns mining in that patterns derived are often large and not very easy to understand or use. In addition, more complex relations among events are often hidden behind sequences. A novel model for sequential patterns called Sequential Patterns Graph (SPG) is proposed. The construction algorithm of SPG is presented with experimental results to substantiate the concept. The thesis then sets out to define some new structural patterns such as concurrent branch patterns, exclusive patterns and iterative patterns which are generally hidden behind sequential patterns. Finally, an integrative framework, named Post Sequential Patterns Mining (PSPM), which is based on sequential patterns mining, is also proposed for the discovery and visualisation of structural patterns. This thesis is intended to prove that discrete sequential patterns derived from traditional sequential patterns mining can be modelled graphically using SPG. It is concluded from experiments and theoretical studies that SPG is not only a minimal representation of sequential patterns mining, but it also represents the interrelation among patterns and establishes further the foundation for mining structural knowledge (i.e. concurrent branch patterns, exclusive patterns and iterative patterns). from experiments conducted on both synthetic and real datasets, it is shown that Concurrent Branch Patterns (CBP) mining is an effective and efficient mining algorithm suitable for concurrent branch patterns.
2
Jones, Mary Elizabeth Song Il-Yeol. "Dimensional modeling : identifying patterns, classifying patterns, and evaluating pattern impact on the design process /." Philadelphia, Pa. : Drexel University, 2006. http://dspace.library.drexel.edu/handle/1860/743.
Full text
3
SAEKI, Motoshi, Takashi KOBAYASHI, Ryota SAKAMOTO, Junya KATADA, and Shinpei HAYASHI. "Design Pattern Detection by Using Meta Patterns." Institute of Electronics, Information and Communication Engineers, 2008. http://hdl.handle.net/2237/14977.
Full text
4
Walton, James Jonathan. "Pattern-equivariant homology of finite local complexity patterns." Thesis, University of Leicester, 2014. http://hdl.handle.net/2381/28923.
Full textAbstract:
This thesis establishes a generalised setting with which to unify the study of finite local complexity (FLC) patterns. The abstract notion of a pattern is introduced, which may be seen as an analogue of the space group of isometries preserving a tiling but where, instead, one considers partial isometries preserving portions of it. These inverse semigroups of partial transformations are the suitable analogue of the space group for patterns with FLC but few global symmetries. In a similar vein we introduce the notion of a collage, a system of equivalence relations on the ambient space of a pattern, which we show is capable of generalising many constructions applicable to the study of FLC tilings and Delone sets, such as the expression of the tiling space as an inverse limit of approximants. An invariant is constructed for our abstract patterns, the so called patternequivariant (PE) homology. These homology groups are defined using infinite singular chains on the ambient space of the pattern, although we show that one may define cellular versions which are isomorphic under suitable conditions. For FLC tilings these cellular PE chains are analogous to the PE cellular cochains [47]. The PE homology and cohomology groups are shown to be related through Poincare duality. An efficient and highly geometric method for the computation of the PE homology groups for hierarchical tilings is presented. The rotationally invariant PE homology groups are shown not to be a topological invariant for the associated tiling space and seem to retain extra information about global symmetries of tilings in the tiling space. We show how the PE homology groups may be incorporated into a spectral sequence converging to the Cech cohomology of the rigid hull of a tiling. These methods allow for a simple computation of the Cech cohomology of the rigid hull of the Penrose tilings.
5
Backlund, Per. "The Use of Patterns in Information System Engineering." Thesis, University of Skövde, Department of Computer Science, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-619.
Full textAbstract:
The aims of this dissertation are to investigate the use and usefulness of patterns in Information Systems Engineering and to identify future areas of research. In order to do this there is a need to survey different types of patterns and find a common concept of patterns. A pattern is based on experience found in the real world. A text or a model or a combination of the both can describe the pattern. A pattern is typically described in terms of context, forces, problem, and solution. These can be explicitly expressed or implicitly found in the description of the pattern.
The types of patterns dealt with are: object-oriented patterns; design patterns, analysis patterns; data model patterns; domain patterns; business patterns; workflow patterns and the deontic pattern. The different types of patterns are presented using the authors' own terminology.
The patterns described in the survey are classified with respect to different aspects. The intention of this analysis is to form a taxonomy for patterns and to bring order into the vast amount of patterns. This is an important step in order to find out how patterns are used and can be used in Information Systems Engineering. The aspects used in the classification are: level of abstraction; text or model emphasis; product or process emphasis; life cycle stage usage and combinations of these aspects.
Finally an outline for future areas of research is presented. The areas that have been considered of interest are: patterns and Information Systems Engineering methods; patterns and tools (tool support for patterns); patterns as a pedagogical aid; the extraction and documentation of patterns and patterns and novel applications of information technology. Each future area of research is sketched out.
6
Kristensen, Johnstone Tonje. "Surface patterns, spatiality and pattern relations in textile design." Licentiate thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-12987.
Full textAbstract:
This licentiate thesis focuses on surface patterns, spatiality, and pattern relations in textile design, and aims to explore surface patterns as spatial definers and what they mean in the context of surface patterns. A secondary focus relates to applying conceptual spatial determinations as alternative design variables in design processes, and exploring how these could be used to define and analyse pattern relations. Through a series of exploratory design experiments that used printed and projected surface patterns in a three-dimensional setting, which were documented using photographs and film, the notion of pattern relations, wherein scale was used as a design variable, was explored. The outcome of the experiments showed the expressional possibilities that surface patterns may provide in a defined space, and how these are connected to pattern relations. In order to encourage an accompanying discussion regarding alternative methods of analysing surface patterns, the construction of a theoretical model was initiated. Workshops with design students were used as another practical method in this work. The results showed that there is great potential in using conceptual spatial determinations to define pattern relations by viewing surface patterns as spatial definers, rather than taking a traditional perspective on their functions. Another outcome is the theoretical model, which proposes a specific approach to pattern relations. This research demonstrates how conceptual spatial determinations can benefit the textile design process, as well as design teaching, which could in turn provide the field with new expressions that may lead to a change in or fruitful addition to the practice.
7
Charalampidis, Orestis Kosmas. "Patterns in the city : A tool for pattern correlation." Thesis, KTH, Urbana och regionala studier, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279944.
Full textAbstract:
Beboeliga städer är i frontlinjen i arkitekters och stadsdesigners arbete och beboeliga gator är en stor och viktig del av var stadslivet sker. Studerandet av befintliga gator och livet på dem, en del av urban morfologins forskningsområde, skulle kunna få fram aspekter som kommer att utveckla designprocessen. Den här avhandlingen föreslår en metod som syftar till att bidra till en bättre förståelse av hur vi upplever gatumiljöer. Det är ett försök att analysera och kvantifiera rytmer som uppstår genom vår dagliga livsupplevelse längs gatorna. Mönstren i elementen i vår byggda miljö bidrar till skapandet av sådana urbana rytmer. Metoden består av en kartläggningsprocess för datainsamling och en matematisk modell som analyserar data och ger kvantitativa resultat vilka används som jämförande index för korrelation av mönster längs fasaderna på utvalda gator. Metoden testas på ett urval av tre gator i Stockholms stad. Resultaten av testet anses vara tillfredsställande för att tekniken kan anses vara funktionell. Testet begränsar sig dock till fysiska, synliga element. Därför skulle metodens bidrag vara mer värdefullt i ett bredare sammanhang samt i kombination med metoder och data av en mer inkluderande studie - vilket kommer att ge en större helhetsanalys. Huvudhinder för metodens implementering är dels bristen på information om samband mellan befintliga mönster och urbana spatiala kvaliteter och även de ineffektiva tillvägagångssätten att kartlägga mönster i stor skala. Tekniska framsteg och ytterligare forskning kan emellertid skapa en god grund för vidare utveckling.Livable cities are in the frontline of the work of architects and urban designers and livable streets occupy a large and important part of where city life happens. The study of existing streets and the life on them, a part of urban morphology's field of research, could bring light to aspects that will evolve the design process. This thesis suggests a method that aims to contribute to a better understanding of how we experience street environments. It is an effort to analyze and quantify the rhythms that occur through our every day life experience along the streetscapes. The patterns of our built environment's elements contribute to the creation of such urban rhythms. The method is comprised by a mapping process for data collection and a mathematical model which analyzes the data and provides with quantitative results that are used as comparative indexes for the correlation of patterns along the facades of selected paths. The method is tested on a sample of three paths in the city of Stockholm. The results of the test are considered satisfying for the technique to be considered functional. The test, though, limits itself to physical, perceptible objects. Therefore, the method's contribution would be more valuable inside a broader context and in combination with methods and data of a more inclusive study, which will provide a more holistic analysis. Main obstacles for the method's implementation are the lack of information about connection of existing patterns to urban space qualities and the inefficient ways of mapping patterns in a large scale. However, technological advancements and further research might create a fertile ground for development.
8
Spickard, Kristen R. "Patterns." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1343703458.
Full text
9
Bruinink, C. M. "Pattern strategies in nanofabrication from periodic patterns to functional nanostructures /." Enschede : University of Twente [Host], 2009. http://doc.utwente.nl/60764.
Full text
10
Hallstrom, Jason Olof. "Design Pattern Contracts." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1090010266.
Full text
11
Zhu, Jia Jun. "A language for financial chart patterns and template-based pattern classification." Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3950603.
Full text
12
Hintze, Katarina, Michal Ivaška, and René Kallenbach. "Describing patterns." Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2013/6577/.
Full textAbstract:
1. What comes to your Mind when you think of 'patterns'?
2. Does your assignment include patterns?
3. Did you decide tu use some of the patterns?
4. If yes, what problem did you explain with the help of patterns?
4. Describe which patterns you used and how you used them
5. Did you explain the concept of a pattern to your pupils?
6. From your point of view – did pattern offer a helpful structure to prepare your lesson?
7. To what extent were patterns useful for the pupils to understand the main topic of the lesson?
8. How would you improve teaching patterns in your assignments?
9. If you didn ’t use any patternsexplain why. 10. What do you think about using the concept of patterns in general? 11. Will you use patterns in other lessons in the future? Describe why or why not. 12. Conclusion
13
Ferris, Morris Samuel A. "Pulse Patterns." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1398272266.
Full text
14
White, Jennifer A. "Test patterns." [Chico, Calif. : California State University, Chico], 2009. http://csuchico-dspace.calstate.edu/xmlui/handle/10211.4/177.
Full text
15
Shipman, Patrick Daniel. "Plant patterns." Diss., The University of Arizona, 2004. http://hdl.handle.net/10150/290129.
Full textAbstract:
The hexagons on a pineapple contrast with the ribs observed, for example, on pumpkins or saguaro cacti. This dissertation demonstrates how these various configurations, and also the related patterns of phyllotaxis (the arrangement of leaves into whorls or spirals) can be understood as the energy-minimizing buckling pattern of a compressed shell (the plant's tunica) on an elastic foundation. The key new idea is that the elastic energy is minimized by special triads or sequences of triads of periodic deformations whose local wavevectors add to zero. Although triad configurations arise from a variety of microscopic mechanisms in natural and laboratory systems, we show that the particular choices of wavevectors that are observed on plants arise in a nontrivial way from properties specific to a mechanical model. Furthermore, the theory predicts correlations between types of phyllotaxis and shapes of plant surface configurations and suggests experiments that can further test the mechanical theory of plant pattern formation. The dissertation concludes with a derivation of Cross-Newell equations governing pattern formation far from onset in nonisotropic systems and in systems with hexagonal planforms.
16
Maur, Carleen. "Whether patterns." Thesis, University of Iowa, 2017. https://ir.uiowa.edu/etd/5565.
Full textAbstract:
My experimental film essay, Whether Patterns explores how the language of weather is used to describe political actions, and, in so doing, naturalize them. I show how the Pride Parade has become a well-established and regular seasonal occurrence, in contrast to its disruptive origin in the Stonewall Riots. When we talk about a political “climate,” as we often do, we imply that the political situation is out of our control, that it is something we must endure or wait out or “weather.” In my film, I juxtapose the sonic and visual effects of weather with footage I have taken at Pride parades throughout the country, and with found footage that documents the history of the gay rights movement. In so doing, I complicate the image of the parade space, and show how it has become untethered from its original radical context.
17
Leung, Ngo-hei, and 梁傲晞. "Spatial dispersion patterns of Planaxis sulcatus: patterns and consequences." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B48329502.
Full textAbstract:
Mobile, rocky shore species often exhibit distinct but dynamic spatial distribution patterns, such as the occupation of microhabitats and formation of aggregations. These patterns are likely to be influenced by the behavioural patterns of a species, their population dynamics and the consequent benefits of adopting particular patterns at certain times of the year. Using Planaxis sulcatus (Planaxidae) as a model species, this thesis documented spatial and temporal variation in the spatial patterns of this species, and attempted to identify the causes and consequences of these behaviours in the seasonally variable Hong Kong intertidal zone.
Activity patterns and snail behaviour during activity influenced the locations and types of spatial patterns formed. Planaxis was active and foraged whilst awash, with activity initiated by the ebbing or rising tides. Activity continued until the rock dried on an ebbing tide, or until snails were submerged by the rising tide. Snails were more active and moved for longer durations in summer than winter. When inactive, Planaxis occupied microhabitats such as cracks and crevices in summer and winter, but in the cooler months snails also formed aggregations on open rock surfaces and around microhabitats such as crevices. The extent of aggregation and number of snails in each aggregation showed strong seasonal variation, being greater in the transition period between summer and winter, and differed between sites, being the greatest at one site at Stanley. Seasonal differences in aggregation patterns may be linked with concurrent variation in Planaxis populations which, as a result of life histories events, had a greater abundance of snails and a larger number of recruits in the summer-winter transition, potentially increasing the chances and likelihood of aggregation formation.
Microhabitat occupation in the summer provided physiological benefits to the snails. Compared with snails on open rock surfaces during summer low tides, those in crevices remained cooler and suffered less osmotic stress; while individuals in rock pools experienced lower osmotic but not thermal stress. In summer, aggregated snails suffered higher thermal and osmotic stresses than solitary individuals. The winter aggregations, however, showed little physiological benefits; with aggregations of different sizes having no effect on snail body temperatures, and only weak indications of large aggregations relieving osmotic stress. Winter aggregations, therefore, may be linked to minimizing dislodgement risks due to increased wave action at this time.
A computer simulation incorporating seasonal differences in population densities, the likelihood and duration of activity, different topographies and three behavioural “rules” produced spatial patterns similar to those on the shore in terms of aggregation sizes, and the proportions of aggregating and crevice-occupying snails. These variables, therefore, play a role in determining the spatial patterns seen in Planaxis. This simple model did not, however, completely match field observations, suggesting that seasonal and spatial differences in distribution patterns involved more complex processes such as variation in local environmental conditions (temperature, wave action, shore topography) and/or biological factors (population densities, size structures, behavioural variation). Further investigations of these processes may better resolve our understanding of how these patterns form and their potential benefits.published_or_final_version
Biological Sciences
Doctoral
Doctor of Philosophy
18
Dukovich, Adam. "Design Patterns go to Hollywood: Teaching Patterns with Multimedia." DigitalCommons@CalPoly, 2008. https://digitalcommons.calpoly.edu/theses/9.
Full textAbstract:
Design Patterns have insinuated themselves into the forefront of computer science and software engineering practice. To this end, there has been much scholarship about the proper way to introduce them into the classroom. Studies indicate that understanding the contexts in which design patterns are to be used is one of the most (if not the most) difficult challenge in applying design patterns. However, little research on the topic attempts to solve the problem of better illuminating this context problem, preferring instead to focus on simplification of the patterns and better examples to explain them. This paper discusses a new paradigm through which the teaching of design patterns can be viewed, one which focuses on conceptual examples and contexts as the key elements in teaching design patterns. To better illustrate this new ideology, several short instructional videos, each employing this approach with a different design pattern were created. Their effectiveness was subsequently assessed, relative to traditional lecture that focused more on teaching the structure of the patterns.
19
Rubarth, Lori. "Nursing Patterns of Knowing in Assessment of Newborn Sepsis." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1105%5F1%5Fm.pdf&type=application/pdf.
Full text
20
Watts, Douglas A. "The relationship between electronic use, sleeping patterns, and EEG patterns." Honors in the Major Thesis, University of Central Florida, 2001. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/311.
Full textAbstract:
This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.Bachelors
Arts and Sciences
Psychology
21
Martin, David J. "Detection of maximal repeating patterns and limited length repeating patterns." Master's thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-12232009-020250/.
Full text
22
Zambrano, Ramirez Adrian. "Synthesis of reaction-diffusion patterns with DNA : towards Turing patterns." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS214/document.
Full textAbstract:
Cette thèse porte sur la mise en place et le développement d’une approche expérimentale pour l’étude de la dynamique spatio-temporelle de réseaux de réactions à base d’ADN. Nos résultats démontrent la capacité des réseaux d’ADN à se spatialiser sous la forme d’ondes progressives. Nous avons également pu obtenir des motifs stationnaires à base d’ADN et d’assemblages de billes. Ce travail contribue donc à la conception de motifs spatio-temporels de réactions chimiques et de matériaux par le biais de réseaux réactionnels biochimiques programmables. Nous apportons également de nouvelles données sur l’émergence d’ordre spatio-temporel à partir de processus de réaction-diffusion. De ce fait, cette étude contribue à une meilleure compréhension des principes fondamentaux qui régissent l’apparition d’une auto-organisation moléculaire dans un système chimique hors-équilibre. De plus, la combinaison de réseaux synthétiques d’ADN, du contrôle du coefficient de diffusion de plusieurs espèces d’ADN et de la micro-fluidique peut donner lieu à des motifs spatiaux stables, comme par exemple, les fameuses structures de Turing, ce qui tend à confirmer le rôle de celles-ci dans la morphogénèseThis PhD work is devoted to developing an experimental framework to investigate chemical spatiotemporal organization through mechanisms that could be at play during pattern formation in development. We introduce new tools to increase the versatility of DNA-based networks as pattern-forming systems. The emergence of organization in living systems is a longstanding fundamental question in biology. The two most influential ideas in developmental biology used to explain chemical pattern formation are Wolpert's positional information and Turing's reaction-diffusion self-organization. In the case of positional information, the pattern emerges from a pre-existing morphogen gradient across space that provides positional values as in a coordinate system. Whereas, the Turing mechanism relies on self-organization by driving a system of an initially homogeneous distribution of chemicals into an inhomogeneous pattern of concentration by a process that involves solely reaction and diffusion. Although numerical simulations and mathematical analysis corroborate the incredible potential of reaction-diffusion mechanisms to generate patterns, their experimental implementation is not trivial. And despite of the exceptional achievements in pattern formation with Belousov–Zhabotinsky systems, these are difficult to engineer, thus limiting their experimental implementation to few available mechanisms. In order to engineer reaction-diffusion systems that display spatiotemporal dynamics the following three key elements must be controlled: (i) the topology of the network (how reactions are linked to each other, i.e. in a positive or negative feedback manner), (ii) the reaction rates and (iii) the diffusion coefficients. Recently, using nucleic acids as a substrate to make programmable dynamic chemical systems together with the lessons from synthetic biology and DNA nanotechnology has appeared as an attractive approach due to the simplicity to control reaction rates and network topology by the sequence. Our experimental framework is based on the PEN-DNA toolbox, which involves DNA hybridization and enzymatic reactions that can be maintained out of equilibrium in a closed system for long periods of time. The programmability and biocompatibility of the PEN-DNA toolbox open new perspectives for the engineering of the reaction-diffusion chemical synthesis, in particular in two directions. Firstly, to study biologically-inspired pattern-forming mechanisms in simplified, yet relevant, experimental conditions. Secondly to build new materials that would self-build by a process inspired from embryo morphogenesis. We worked towards the goal of meeting the two requirements of Turing patterning, transferring chemical spatiotemporal behavior into material patterns, and imposing boundary conditions to spatiotemporal patterns. Therefore, the structure of this document is divided into four specific objectives resulting in four chapters. In chapter 1 we worked on testing a DNA-based reaction network with an inhibitor-activator topology. In chapter 2 we focused on developing a strategy to tune the diffusion coefficient of activator DNA strands. In chapter 3 we explored how chemical patterns determine the shape of a material. Finally, in chapter 4 we addressed the issue of controlling the geometry over a DNA-based reaction-diffusion system. Overall, we have expanded the number of available tools to study chemical and material pattern formation and advance towards Turing patterns with DNA
23
Oates, Nathan Lewis Trudy. "Migratory patterns stories /." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/7186.
Full textAbstract:
Title from PDF of title page (University of Missouri--Columbia, viewed on March 2, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dr. Trudy Lewis, Dissertation Supervisor. Vita. Includes bibliographical references.
24
Hallstrom, Daniel George. "Agricultural development patterns." Thesis, Montana State University, 1995. http://etd.lib.montana.edu/etd/1995/hallstrom/HallstromD1995.pdf.
Full textAbstract:
A two-sector general equilibrium model of economic growth has been developed in conjunction with a political economy model of agricultural pricing policies. These theoretical models were used to both present arguments regarding the impact of economic and political forces on agriculture's share of GDP, as well as to provide guides towards specifying the econometric models. Empirical analysis was performed using two data sets. The first covered 81 countries for the years 1971-1981, but contained no explicit measure of policy. The second covered 22 countries for the years 1985-1989, and contained an explicit policy measure in the form of producer subsidy equivalents. Due to the lack of a policy measure in the large data set, a reduced form equation for agriculture's share had to be solved for in order to yield an operational statistical model. Results from this model indicated that variations in agriculture's share could be explained by: level of development, world prices, natural resources, and the political economy variables. For the smaller data set, agriculture's share and producer subsidy equivalents were considered to be jointly endogenous, and so were estimated as a system. It was found that agriculture's share has a negative effect on producer subsidy equivalents, however, producer subsidy equivalents did not have a statistically significant effect on agriculture's share.
25
Crespo, Ramírez Daniel. "Smartphone traffic patterns." Thesis, KTH, Kommunikationssystem, CoS, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91051.
Full textAbstract:
The growing popularity of new generation mobile terminals, known as „smartphones‟,has increased the variety and number of such devices. These devices make use of the resources offered by Universal Mobile Telecommunication Services (UMTS) networks toaccess on-line services such as web browsing, e-mail, audio and video streaming, etc. UMTS networks have to deal with an increasing amount of data traffic generated by smartphones. Because of the fact that the smartphone is battery powered and is trying to satisfy the needs ofboth applications and human users there is a need to be smarter about how to manage both network and terminal resources. This thesis explores the possibility of making a better use of the network and terminal resources by exploiting correlations in the events of the smartphone-generated traffic. We propose a mechanism, through which the network can predict if a terminal is going to produce data transmission or reception in a near future, based on past events in its traffic. According to this prediction, the network will be able to decide if it keeps or releases the resources allocated to the terminal. We analyze the benefits from the network and the terminal point ofview. We also describe a method to estimate an upper bound of the time until the next transmission or reception of data in a near future. We show that it is possible a reduction of the time that each terminal wastes in its maximum power consumption state, but this reduction implies a penalty in the transmission/reception throughput of the terminal. The reduction is not uniform for all terminals: terminals whose traffic presents a predictable behavior gain the most. Estimates of upper bounds of time until the next transmission or reception are more accurate if they are made taking as input information about interarrival times of previous packets.Den växande populariteten för nya generationens mobila terminaler, så kallade"smartphones", har ökat både antal och sådana produkter. Dessa enheter utnyttjar de resursersom Universal Mobile Telecommunication Services (UMTS) att få tillgång till on-line tjänster såsom web webbläsning, e-post, ljud och video streaming, osv. UMTS-nät har hantera med en ökande mängd data som genereras trafik bysmartphones. På grund av det faktum attsmartphone är batteridriven och försöker för att tillgodose behoven hos både applikationer och mänskliga användare det finns ett behov att vara smartare om hur man kan hantera både nätverk och terminaler resurser. Den avhandling undersöker möjligheten att göra en bättre användning av nätverk och terminaler resurser genom att utnyttja samband i händelserna smartphone-genererade trafik. Vi föreslår en mekanism genom vilken nätet kan förutsäga om terminalen kommer att ta fram dataöverföring orreception i en nära framtid, baserat på tidigare händelser i trafiken. Enligt denna förutsägelse, kommer nätet att kunna avgöra om den håller eller frigör resurser till terminalen. Vi analyserar nytta nätet och terminalen synvinkel. Vi beskriver också en metod för att uppskatta övre gränsen för tiden till nästa sändning eller mottagning av data inom ens nar framtidd. Vi visar att det är möjligt att minska den tid som varje terminal avfall i sin maximal strömförbrukning staten, men denna minskning innebär en straffavgift överföring /mottagning genomströmning av terminalen. Minskningen är notuniform för alla terminaler där trafiken utgör en förutsägbart beteende vinna mest. Uppskattningar av övre gränserna för tid untilthe nästa sändning eller mottagning är mer exakta om de görs tar som indata information om interarrival gånger tidigare paket.
26
Gu, Gordon Ping. "Agent policy patterns." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0019/MQ57771.pdf.
Full text
27
Jeon, Jong Sam. "Powerful ray patterns." Online access for everyone, 2007. http://www.dissertations.wsu.edu/Dissertations/Fall2007/j_jeon_120507.pdf.
Full text
28
Bergeron, Mathieu. "Structured polyphonic patterns." Thesis, City University London, 2010. http://openaccess.city.ac.uk/12097/.
Full textAbstract:
The present dissertation develops, applies and evaluates a novel method for the representation and retrieval of patterns in musical data. The method supports the typical polyphonic patterns that one finds in music theory textbooks. Most current computational methods to musical patterns are restricted to monophony (one melody at a time). The Structured Polyphonic Patterns method (SPP) applies to the general case of polyphonic music, where many melodies may unfold concurrently. Pattern components are conjunctions of features which encode properties of musical events, or relations that they form with other events. Relations between events that overlap in time but are not simultaneous are supported, enabling patterns to express key temporal relations of polyphonic music. Patterns are formed by joining and layering pattern components into sequences (horizontal structures) and layers (vertical structures). A layer specifies voicing in an abstract way, and the exploration of different voice permutations is handled automatically. The SPP method also provides a mechanism for defining new features. We evaluate SPP by developing a small catalog of musicologically relevant queries and analyzing the results on four corpora: 185 chorale harmonizations by J.S. Bach, Mozart Symphony no. 40, a small set of piano pieces by Chopin, and a collection of folk songs containing more than 8000 pieces – in addition to its size, demonstrating the scalability of the method, that latter corpus is interesting as it shows that SPP is also usable for monophony. Examining several corpora allows us to establish that some polyphonic patterns constitute salient properties of a corpus: they are over-represented in one corpus by comparison to the others. In addition, the queries we develop demonstrate that the SPP method possesses sufficient expressiveness to capture important music-theoretic notions. At the same time, we show how the method is more restrictive than some existing polyphonic pattern representations, hence providing a better approximation of the expressive power required for polyphonic patterns. It is a better candidate representation for music data mining, a difficult problem that has received significant attention for the monophonic case, but limited attention for the more general polyphonic case.
29
Helgason, Ívar S. (Ívar Sigurjón). "Predicting prescription patterns." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43873.
Full textAbstract:
Thesis (S.M.)--Harvard-MIT Division of Health Sciences and Technology, 2008.Includes bibliographical references (leaves 43-49).
Electronic prescription software is replacing traditional handwritten medication orders. This development however doesn't come without a cost and speed has been one of the most complained about issues. It is important to address this problem and develop methods to reduce the time spent entering medication orders into computerized prescription software. The objective of this study was to understand the structure of prescription patterns and explore the possibility of designing a method that will predict prescription patterns with only the knowledge of past prescription history. Various machine-learning methods were used and their performance measured by the accuracy of prediction as well as their ability to produce desirable results, within practical time limits. This paper presents a method to transform prescription data into a stochastic time series for prediction. The paper also presents a new nonlinear local algorithm based on nearest neighbor search. In analyzing the database the drug patterns were found to be diverse and over 30% of the patients were unique, in the sense that no other patient had been prescribed the same set of active ingredients. In spite of this diversity, it was possible to create a list of 20 drugs that contained the drug to be prescribed next for 70.2% of patients. This suggests that probabilistically created pick lists, tailored specifically for one patient at the time of prescription, might be used to ease the prescription process. However, further research is needed to evaluate the impact of such lists on prescription habits.
by Ívar S. Helgason.
S.M.
30
Yu, Janel K. "Periodontal Practice Patterns." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1273587161.
Full text
31
Gu, Gordon Ping Carleton University Dissertation Computer Science. "Agent policy patterns." Ottawa, 2000.
Find full text
32
Waggener, Christine E. "Patterns economical inhabitations /." This title; PDF viewer required. Home page for entire collection, 2004. http://archives.udmercy.edu:8080/dspace/handle/10429/9.
Full text
33
Fox, Joshua. "Semitic noun patterns /." Winona Lake (Ind.) : Eisenbrauns, 2003. http://catalogue.bnf.fr/ark:/12148/cb390798651.
Full text
34
Kinney, J. Bryan. "Court sentencing patterns /." Burnaby B.C. : Simon Fraser University, 2005. http://ir.lib.sfu.ca/handle/1892/2367.
Full text
35
Voß, Jakob. "Describing data patterns." Doctoral thesis, Humboldt-Universität zu Berlin, Philosophische Fakultät I, 2013. http://dx.doi.org/10.18452/16794.
Full textAbstract:
Diese Arbeit behandelt die Frage, wie Daten grundsätzlich strukturiert und beschrieben sind. Im Gegensatz zu vorhandenen Auseinandersetzungen mit Daten im Sinne von gespeicherten Beobachtungen oder Sachverhalten, werden Daten hierbei semiotisch als Zeichen aufgefasst. Diese Zeichen werden in Form von digitalen Dokumenten kommuniziert und sind mittels zahlreicher Standards, Formate, Sprachen, Kodierungen, Schemata, Techniken etc. strukturiert und beschrieben. Diese Vielfalt von Mitteln wird erstmals in ihrer Gesamtheit mit Hilfe der phenomenologischen Forschungsmethode analysiert. Ziel ist es dabei, durch eine genaue Erfahrung und Beschreibung von Mitteln zur Strukturierung und Beschreibung von Daten zum allgemeinen Wesen der Datenstrukturierung und -beschreibung vorzudringen. Die Ergebnisse dieser Arbeit bestehen aus drei Teilen. Erstens ergeben sich sechs Prototypen, die die beschriebenen Mittel nach ihrem Hauptanwendungszweck kategorisieren. Zweitens gibt es fünf Paradigmen, die das Verständnis und die Anwendung von Mitteln zur Strukturierung und Beschreibung von Daten grundlegend beeinflussen. Drittens legt diese Arbeit eine Mustersprache der Datenstrukturierung vor. In zwanzig Mustern werden typische Probleme und Lösungen dokumentiert, die bei der Strukturierung und Beschreibung von Daten unabhängig von konkreten Techniken immer wieder auftreten. Die Ergebnisse dieser Arbeit können dazu beitragen, das Verständnis von Daten --- das heisst digitalen Dokumente und ihre Metadaten in allen ihren Formen --- zu verbessern. Spezielle Anwendungsgebiete liegen unter Anderem in den Bereichen Datenarchäologie und Daten-Literacy.Many methods, technologies, standards, and languages exist to structure and describe data. The aim of this thesis is to find common features in these methods to determine how data is actually structured and described. Existing studies are limited to notions of data as recorded observations and facts, or they require given structures to build on, such as the concept of a record or the concept of a schema. These presumed concepts have been deconstructed in this thesis from a semiotic point of view. This was done by analysing data as signs, communicated in form of digital documents. The study was conducted by a phenomenological research method. Conceptual properties of data structuring and description were first collected and experienced critically. Examples of such properties include encodings, identifiers, formats, schemas, and models. The analysis resulted in six prototypes to categorize data methods by their primary purpose. The study further revealed five basic paradigms that deeply shape how data is structured and described in practice. The third result consists of a pattern language of data structuring. The patterns show problems and solutions which occur over and over again in data, independent from particular technologies. Twenty general patterns were identified and described, each with its benefits, consequences, pitfalls, and relations to other patterns. The results can help to better understand data and its actual forms, both for consumption and creation of data. Particular domains of application include data archaeology and data literacy.
36
Du, Mouza Cédric. "Patterns de mobilité." Paris, CNAM, 2005. http://www.theses.fr/2005CNAM0515.
Full textAbstract:
Dans cette thèse j'envisage une approche originale de gestion des requêtes comme un processus traitant des événements (par exemple l'entrée dans une zone) liés aux déplacements des objets sur une représentation discrète de l'espace. Une requête se présente alors comme une séquence d'événements élémentaires donnés explicitement ou non. Nous introduisons les patterns de mobilité comme des expressions décrivant de telles séquences d'événements. Nous avons étudié essentiellement deux aspects dans ce cadre : comparaison et agrégation de trajectoires d'objets mobiles, avec prise en compte éventuellement d'un espace multi-échelle ; classification en ligne de trajectoires mises à jour continuellement par des outils GPS. Pour chacun des aspects abordés, nous proposons un modèle et une technique d'évaluation s'appuyant sur des algorithmes de recherche de patterns. Un prototype valide nos optimisationsIn this thesis I investigate an original approach, namely the management of queries as a process relying on events (for instance, an object enters a zone) related to the moves of objects over a discrete representation of the underlying space. A query is thus a sequence of primitive events. We introduce mobility patterns as expressions describing such sequences of events. In the present paper we examine specifically the following aspects of this framework : comparison and aggregation of moving objects trajectories, with respect to, eventually, a multi-scale map ; on-line classification of trajectories continuously provided by GPS-like devices. For each aspect, we propose a model and an evaluation technique based on pattern-matching algorithms. A prototype validates our optimizations
37
Olsson, David, and Christian Jonsson. "Dark Patterns ur ett företagsekonomiskt perspektiv : Dark Patterns påverkan på varumärkeslojalitet." Thesis, Karlstads universitet, Avdelningen för företagsekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78859.
Full textAbstract:
Bakgrunden till denna uppsats är det ökande intresset av olika designtekniker inom webbdesign. Ämnet som studeras växer och är något som de flesta individer i dagens samhälle kommer i kontakt med. Problemet ligger i att det potentiellt sett finns en baksida med att använda sig av denna typ av designelement. Med tanke på att tidigare forskning inte studerat de potentiella negativa konsekvenserna som finns med detta så väljer vi i vår studie att utforska existensen av dessa potentiella negativa påverkan genom att undersöka hur dark patterns påverkar varumärkeslojaliteten. Syftet med denna studie är därmed att förklara hur dark patterns påverkar konsumenternas varumärkeslojalitet. För att besvara vårt framtagna syfte utformas fyra stycken hypoteser som baseras på tidigare forskning, där dark patterns, oetiskt beteende, attityd och varumärkeslojalitet är våra variabler. Med utgångspunkt i en kvantitativ studie i form av en enkätundersökning testas sedan hypoteserna. Datainsamlingen sker i form av en enkätundersökning där informationen sedan analyseras genom en regressionsanalys. I denna analys undersöks sambandet mellan dark patterns och varumärkeslojalitet genom två medierande variabler; oetiskt beteende samt konsument-attityder. Slutsatsen i denna studie är att de hypoteser som presenteras och är framtagna från den tidigare teorin visar sig vara signifikanta. Data och analysen tillstyrker därav våra hypoteser om att dark patterns resulterar i en minskad varumärkeslojalitet.
38
Goldrick, Matthew Andrew. "Patterns of sound, patterns in mind phonological regularities in speech production /." Available to US Hopkins community, 2002. http://wwwlib.umi.com/dissertations/dlnow/3068158.
Full text
39
Brooks, Matthew Bryan. "Multistability in bursting patterns in a model of a multifunctional central pattern generator." Atlanta, Ga. : Georgia State University, 2009. http://digitalarchive.gsu.edu/math_theses/73/.
Full textAbstract:
Thesis (M.S.)--Georgia State University, 2009.Title from title page (Digital Archive@GSU, viewed July 20, 2010) Andrey Shilnikov, Robert Clewley, Gennady Cymbalyuk, committee co-chairs; Igor Belykh, Vladimir Bondarenko, Mukesh Dhamala, Michael Stewart, committee members. Includes bibliographical references (p. 65-67).
40
Henzen, Christin. "Usability-Patterns für Webanwendungen in Geodateninfrastrukturen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-229279.
Full textAbstract:
Die Usability von Webanwendungen in Geodateninfrastrukturen gewinnt zunehmend an Bedeutung. Eine große Anzahl von Webanwendungen stellt einem heterogenen und wachsenden Nutzerkreis Geoinformationen auf verschiedene Weise über das Web zur Verfügung. Diese Nutzergruppen benötigen robuste und nutzerfreundliche User-Interfaces. Die Usability der verfügbaren Webanwendungen variiert stark, wobei sich eine unzureichende Usability nicht nur auf die Akzeptanz der Webanwendung, sondern vielfach auf die Akzeptanz der bereitgestellten Geoinformationen bzw. auf die der ganzen Geodateninfrastruktur auswirkt. Die Behebung von Usability-Problemen aus Webanwendungen in Geodateninfrastrukturen (GI-Webanwendungen) ist derzeit mit einem hohen Aufwand verbunden.
Ein Grund dafür ist die fehlende Strukturierung wiederkehrender Usability-Probleme, die zur Folge hat, dass Usability-Probleme stets durch Usability-Evaluierungen neu erkannt werden müssen. Strukturierte Usability-Probleme lassen sich durch Lösungsmuster beheben. Die Vielzahl der verfügbaren GI-Webanwendungen lässt darauf schließen, dass für die grundlegenden wiederkehrenden Probleme bereits Lösungen in anderen GI-Webanwendungen existieren. Bisher werden die Lösungen jedoch für jede Anwendung neu entwickelt und implementiert. Es fehlt an Methoden und Konzepten die (häufig) auftretenden Usability-Probleme in GI-Webanwendungen strukturiert zu erfassen und durch Lösungsmuster zu beheben.
Die Beiträge der vorliegenden Arbeit bestehen unter anderem in einer Auseinandersetzung mit dem Themengebiet der Usability für Webanwendungen in Geodateninfrastrukturen. Ein Ergebnis der Arbeit besteht in der interdisziplinären Grundlagenbetrachtung zur Usability im Softwareentwicklungsprozess und zu Kernaspekten von Geodateninfrastrukturen und darin verfügbaren Webanwendungen. Im Rahmen der Arbeit erfolgte ebenfalls eine Systematisierung bisheriger Forschungsarbeiten zur Usability in GI-Webanwendungen. Diese zeigte, dass das Bewusstsein für die Bedeutung der Usability in der GI-Domäne bereits vorhanden ist, es zum Teil aber noch an detaillierten Untersuchungen fehlt. Daher wurden in verschiedenen eigenen Usability-Studien Untersuchungen zur Usability in der GI-Domäne durchgeführt. Die daraus resultierende strukturierte Sammlung von Usability-Problemen in GI-Webanwendungen bildet ein Usability-Grundwissen für zukünftige Neuentwicklungen oder Überarbeitungen von GI-Webanwendungen. Die gesammelten Usability-Probleme lassen sich teilweise auch in anderen Anwendungen der Domäne finden, und bilden somit auch für deren Entwicklung bzw. Redesign eine sinnvolle Wissensbasis.
Für die strukturierte Erfassung von Usability-Problemen aus GI-Webanwendungen und entsprechende Lösungsvorschläge wird das Konzept der Usability-Patterns für GI-Webanwendungen vorgeschlagen. Durch die Integration des GIDomänenwissens in die Patternstruktur, können Usability-Probleme der Domäne entsprechend spezifischer beschrieben und passende Lösungen aufgefunden werden. Neue Patterntypen und -relationen mit Regeln zur Kombinierbarkeit der Typen und Relationen ermöglichen die Vermeidung mehrfach auftretender Usability-Probleme, wie z. B. des Mangels eines konsistenten Design- und Interaktionskonzepts. Aufbauend auf einem komplexen Anwendungsfall wird die Umsetzbarkeit des Konzepts der Usability-Patterns für GI-Webanwendungen gezeigt. In einer selbst entwickelten Anwendung zur Exploration und Visualisierung wissenschaftlicher GI-Ressourcen werden dazu Beispielpatterns umgesetzt und evaluiert. Die Anwendung implementiert neuartige Visualisierungs- und Interaktionskonzepte für die Exploration von GI-Ressourcen, zeigt aber auch die Übertragbarkeit von Lösungskonzepten aus anderen Domänen. Ein sogenannter Patternbrowser veranschaulicht, wie die Recherche und Exploration von Patterns einer Patternsammlung auf Basis der Patternmerkmale erfolgen kann. Die Webanwendung stellt damit ein Werkzeug für die projektübergreifende Arbeit interdisziplinärer Teams dar. Eine Formalisierung der wesentlichen Patternmerkmale bildet die Grundlage für die vielfältige Nutzung des neuen Konzepts, z. B. in verschiedenen Softwareanwendungen wie GUI-Buildern, und damit verbundene weiterführende Forschungsarbeiten.
41
Hamblin, Jane V. "Dispersion patterns of Holarctic-breeding, migrant landbirds : global paradigms or regional patterns?" Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/6263.
Full textAbstract:
Bibliography: leaves 74-82.This study quantifies the breeding and wintering ranges, habitat occupancy, diet and foraging mode of each migrant taxon on each of the three flyways. It aims to compare how patterns of migration between the temperate and tropical latitudes vary spatially in response to a) the geography of the land masses, b) relative availability of different habitat types, c) dietary preferences and d) foraging mode.
42
Hakeem, Hossam Hassan. "A compositional framework for determining pattern applicability." Thesis, De Montfort University, 2010. http://hdl.handle.net/2086/4401.
Full textAbstract:
The notion of ‘pattern’ originates in the work of Christopher Alexander and, in recent years, patterns have become a popular part of software development. A pattern is defined as a ‘three-part rule’: a relationship between a given context, a recurring system of forces peculiar to that context, and a specific spatial configuration that permits resolution of these forces. In essence, the ‘context’ of a pattern is the whole system under construction and its state in the construction process at the point at which the pattern is being applied. The nature of the context, therefore, changes at every step of the process and this has significant implications for how patterns should be used. Specifically, applying each pattern changes the context by changing the state of the system under construction and creates both a new design problem and a new context for the next pattern to be applied. The next picked pattern must have a certain criteria in order for it to be applied successfully and this is will be determined by the characteristics of the new context just created. The issue of composing pattern sequences is therefore more temporal than it is static and structural (as provided currently via pattern maps). The decision as to which one to use is temporally constrained in the sense that the choice is made only at a particular point in the construction process of some specific system, and may well be determined, or at least further constrained, by the current state of that system. The fundamental research question that is addressed here is: how is this dynamically changing context to be presented to guide pattern applications? In this thesis, a framework is presented to provide a systematic analysis of composition of pattern applications in terms of the properties of their context. Such an approach will reveal the ordering of patterns in space and time dimensions. Examples of composition of pattern applications include: - One pattern contains or generalises another smaller-scale pattern (this will be called in thesis refinement); - Two patterns are complementary, i.e., one pattern needs the other to be applied before (Sequential Order); - Two patterns solve different problems that overlap and coexist on the same level (Parallel Order); - Two patterns solve the same problem in alternative, but equally valid ways (Choice in Order). At the design phase, the framework provides mechanisms for analysing the choice of composition to ensure the correctness of a design or to compare between two different designs or to modify an existing design. This framework describes a pattern's context via a pair of constraints, known as Assumption and Commitment. In general, the Assumption is a constraint placed on the context and the Commitment is what the solution provided by the pattern commits to after the pattern's application. In addition, the thesis provides a set of composition rules that can be applied to aid in the analysis of the application of pattern sequences. The approach is domain independent as it does not depend on the nature of the catalogue from which the patterns originate. The work has been evaluated using various existing patterns from Ian Graham’s web usability (WU) pattern bank and the User Interface (UI) patterns of Welie.
43
Hofer, Simon. "Verification of design patterns." Zurich : ETH, Swiss Federal Institute of Technology Zurich, Department of Computer Science, Chair of Programming Methodology, 2009. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=435.
Full text
44
Jacobsson, Ingemar. "Design patterns in practice." Thesis, University West, Department of Informatics and Mathematics, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-589.
Full text
45
Fettke, Peter, and Peter Loos. "Zur Klassifikation von Patterns." Universitätsbibliothek Chemnitz, 2001. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200100766.
Full textAbstract:
"Patterns are proven solutions to recurring design problems." In der Literatur sind inzwischen zahlreiche Muster dokumentiert. Es ist offensichtlich, daß eine rein sequentielle Suche in dieser Mustermenge nicht effizient ist. Vielmehr wird ein Ordnungssystem benötigt, um für spezifische Problemstellungen geeignete Muster wiederaufzufinden. In dem Beitrag werden zunächst Anforderungen an ein Ordnungssystem für Muster entwickelt. Im zweiten Teil des Beitrages werden verschiedene Ordnungssysteme für Muster vorgestellt. Der dritte Teil des Beitrages bewertet die beschriebenen Ordnungssysteme im Hinblick auf die zuvor erarbeiteten Anforderungen. Abgeschlossen wird der Beitrag mit Überlegungen, wie ein leistungsfähiges Ordnungssystem für Muster ausgestaltet sein könnte.
46
Plietz, Matthias. "Patterns in der Produktkonfiguration." Universitätsbibliothek Chemnitz, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-70725.
Full text
47
Gameiro, Marcio Fuzeto. "Topological Analysis of Patterns." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7207.
Full textAbstract:
We use computational homology to characterize the geometry of complicated
time-dependent patterns. Homology provides very basic topological (geometrical)
information about the patterns, such as the
number of components (pieces) and
the number of holes. For 3-dimensional patterns it also provides the number of
voids. We apply these techniques to patterns generated by experiments on spiral
defect chaos, as well as to numerically simulated patterns in the Cahn-Hilliard
theory of phase separation and on spiral wave patterns in excitable media.
These techniques allow us to distinguish patterns at different parameter values,
to detect complicated dynamics through the computation of positive Lyapunov
exponents and entropies, to compare experimental data with numerical simulations,
to quantify boundary effects on finite size domains, among other things.
48
Hainzl, Sebastian, Frank Scherbaum, and Gert Zöller. "Spatiotemporal earthquake patterns : [Poster]." Universität Potsdam, 2006. http://www.uni-potsdam.de/imaf/events/ge_work0602.html.
Full text
49
Walker, William D. "Patterns of sexual offending." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq20594.pdf.
Full text
50
Biuk-Aghai, Robert P. "Patterns of virtual collaboration /." Electronic version, 2003. http://adt.lib.uts.edu.au/public/adt-NTSM20040630.160722/index.html.
Full text