Dissertations / Theses: 'DOM dynamic'

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Firlová, Jana. "Ajax - aktivní JavaScript komunikující v XML." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2008. http://www.nusl.cz/ntk/nusl-235895.

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I discuss in this work tools used to build dynamic web-based aplications, focusing on Ajax technology. I introduce the components of this technique, its principles, usage, advantages and disadvantages.I describe a system, which uses Ajax for helping with realization of OLAP operations through dynamic tables. There is also description of these operations included, as well as introduction to possibilities of visual representation of their results.

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Qaddoura, Fareed. "Dynamic Website and Data Engine Generators for Distributed Enterprise/Business Architectures." ScholarWorks@UNO, 2004. http://scholarworks.uno.edu/td/195.

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Creating websites providing dynamic services is an extensive process. Intelligent systems are used to create websites with dynamic services. Current intelligent systems are hard to use and configure by the average user. The generated websites are usually custom built to solve one problem and cannot be fully customizable for users on different environments. This thesis presents a technological solution that enables the average user to create websites with dynamic services by providing a number of parameters. The website generator is a web-based application that generates all the components of the website. The components act as portlets and the generated website will be the portal application. The data engine generator creates the website's underlying database. To enable distributed enterprise/business architecture, the data engine generator records the metadata about the database and the website to be generated. The website generator is a cost effective, dynamic, secure, reliable, and scalable solution that outperforms current website generators and portal applications.

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Siau, Nor Zainah. "A teachable semi-automatic web information extraction system based on evolved regular expression patterns." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/14687.

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This thesis explores Web Information Extraction (WIE) and how it has been used in decision making and to support businesses in their daily operations. The research focuses on a WIE system based on Genetic Programming (GP) with an extensible model to enhance the automatic extractor. This uses a human as a teacher to identify and extract relevant information from the semi-structured HTML webpages. Regular expressions, which have been chosen as the pattern matching tool, are automatically generated based on the training data to provide an improved grammar and lexicon. This particularly benefits the GP system which may need to extend its lexicon in the presence of new tokens in the web pages. These tokens allow the GP method to produce new extraction patterns for new requirements.

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Faleiros, Mariana Veneziano. "Urbaniza??o Dispersa, grandes equipamentos e impactos urbanos: o caso do Parque Dom Pedro Shopping." Pontif?cia Universidade Cat?lica de Campinas, 2010. http://tede.bibliotecadigital.puc-campinas.edu.br:8080/jspui/handle/tede/82.

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Made available in DSpace on 2016-04-04T18:21:54Z (GMT). No. of bitstreams: 1 Mariana Veneziano Faleiros.pdf: 15342512 bytes, checksum: 8f07b9962cccfb9d8e3a2eb15c146929 (MD5) Previous issue date: 2010-02-22
This final paper analyses the urban impact caused after the Parque Dom Pedro Shopping implantation, in Campinas city, especially at his surrounding area. One of the main factors that characterize the enterprise is his regional insertion, since it is located far from consolidated urban fabric, and near to an area connected to many highways, such as Dom Pedro I e Anhanguera. It allows easy access to the equipment by the cities of Campinas Metropolitan Region, and, besides, connects it with inner and outer points of the city. The location factor results in a growing quest for big areas with these characteristics, to build large equipments, since regional roads increase value to the surrounding areas. The insertion of great enterprises, near to these roads, results even more increased value, and the consequent development of the surrounding areas. This urban occupation patterns are typical of the dispersed urbanization process, verified at Campinas, which study is the base for the understanding of the changes occurred at the shopping around areas, after its implantation, and will be the starting point of this paper.
Este trabalho analisa os impactos ocasionados pela implanta??o do Parque Dom Pedro Shopping, na cidade de Campinas, sobretudo no que diz respeito ?s suas ?reas envolt?rias. Um dos principais fatores que caracterizam o empreendimento ? a sua inser??o regional, uma vez que ele se situa distante do tecido urbano consolidado da cidade, em uma ?rea conectada por diversas rodovias, entre as quais, as Rodovias Dom Pedro I e Anhanguera. Ambas permitem um f?cil acesso ao empreendimento, a partir de munic?pios localizados na Regi?o Metropolitana de Campinas, al?m de estabelecer conex?es com pontos intra e inter municipais. ? cada vez mais freq?ente a procura por uma ?rea com tais caracter?sticas para a instala??o de equipamentos de grande porte, j? que as vias regionais s?o importantes elementos na atra??o da expans?o urbana, valorizando suas ?reas envolt?rias. A implanta??o de grandes empreendimentos, pr?ximos a essas vias, resultam em mais valoriza??o e conseq?ente desenvolvimento urbano do entorno. Esse padr?o de ocupa??o urbana ? t?pico do processo de urbaniza??o dispersa verificado no munic?pio de Campinas, cujo estudo ? a base fundamental para a compreens?o das transforma??es ocorridas nas ?reas envolt?rias ao Parque Dom Pedro Shopping, ap?s sua implanta??o, e ser? ponto de partida desta pesquisa. ..

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Langer, André Anders Jörg. "Evaluierung von AJAX-basierten frameworks für das Web 2.0." [S.l. : s.n.], 2007.

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Bowen, Susan. "Biologically relevant characteristics of dissolved organic carbon (DOC) from soil." Thesis, University of Stirling, 2006. http://hdl.handle.net/1893/115.

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Of the organic matter in soils typically < 1% by weight is dissolved in the soil solution (dissolved organic matter; DOM). DOM is a continuum of molecules of various sizes and chemical structures which has largely been operationally defined as the fraction of total organic carbon in an aqueous solution that passes through a 0.45 µm filter. Although only representing a relatively small proportion, it represents the most mobile part of soil organic carbon and is probably enriched with highly labile compounds. DOM acts as a source of nutrients for both soil and aquatic micro-organisms, influences the fate and transport of organic and inorganic contaminants, presents a potential water treatment problem and may indicate the mobilisation rate of key terrestrial carbon stores. The objective of this research was to ascertain some of the biologically relevant characteristics of soil DOM and specifically to determine: (1) the influence of method and time of extraction of DOM from the soil on its biochemical composition and concentration; (2) the dynamics of DOM biodegradation; and, (3) the effects of repeated applications of trace amounts of DOM on the rate of soil carbon mineralization. To examine the influence of method and time of extraction on the composition and concentration of DOM, soil solution was collected from a raised peat bog in Central Scotland using water extraction, field suction lysimetry, and centrifugation techniques on a bimonthly basis over the period of a year (Aug 2003 – Jun 2004). Samples were analysed for dissolved organic carbon (DOC), dissolved organic nitrogen (DON), protein, carbohydrate and amino acid content. For all of the sampled months except June the biochemical composition of DOC varied with extraction method, suggesting the biological, chemical and/or physical influences on DOC production and loss are different within the differently sized soil pores. Water-extractable DOC generally contained the greatest proportion of carbohydrate, protein and/or amino acid of the three extraction methods. Time of extraction had a significant effect on the composition of water- and suction-extracted DOC: the total % carbohydrate + protein + amino acid C was significantly higher in Oct than Dec, Feb and Jun for water-extracted DOC and significantly greater in Dec than Aug, Apr and Jun for suction-extracted DOC. There was no significant change in the total % carbohydrate + protein + amino acid C of centrifuge-extracted DOC during the sampled year. Time of extraction also had a significant effect on the % protein + amino acid N in water- and centrifuge-extracted DON: Oct levels were significantly higher than Feb for water-extracted DON and significantly higher in Aug and Apr for centrifuge-extracted DON. Concentrations of total DOC and total DON were also found to be dependent on time of extraction. DOC concentrations showed a similar pattern of variation over the year for all methods of extraction, with concentrations relatively constant for most of the year, rising in April to reach a peak in Jun. DON concentrations in water- and centrifuge-extracted DON peaked later, in Aug. There were no significant seasonal changes in the concentration of suction-extracted DON. A lack of correlation between DOC and DON concentrations suggested that DOC and DON production and/or loss are under different controls. Laboratory-based incubation experiments were carried out to examine the dynamics of DOC biodegradation. Over a 70 day incubation period at 20oC, the DOM from two types of peat (raised and blanket) and four samples of a mineral soil (calcaric gleysol), each previously exposed to a different management strategy, were found to be comprised of a rapidly degradable pools (half-life: 3 – 8 days) and a more stable pool (half-life: 0.4 to 6 years). For all soil types/treatments, excepting raised peat, the total net loss of DOC from the culture medium was greater than could be accounted for by the process of mineralization alone. A comparison between net loss of DOC and loss of DOC to CO2 and microbial biomass determined by direct microscopy suggested that at least some of the differences between DOC mineralised and net DOC loss were due to microbial assimilation and release. Changes in the microbial biomass during the decomposition process showed proliferation followed by decline over 15 days. The protein and carbohydrate fractions showed a complex pattern of both degradation and production throughout the incubation. The effects of repeated applications of trace amounts of litter-derived DOC on the rate of carbon mineralization over a 35 day period were investigated in a laboratory based incubation experiment. The addition of trace amounts of litter-derived DOC every 7 and 10.5 days appeared to ‘trigger’ microbial activity causing an increase in CO2 mineralisation such that extra C mineralised exceeded DOC additions by more than 2 fold. Acceleration in the rate of extra C mineralised 7 days after the second addition suggested that either the microbial production of enzymes responsible for biodegradation and/or an increase in microbial biomass, are only initiated once a critical concentration of a specific substrate or substrates has been achieved. The addition of ‘DOC + nutrients’ every 3.5 days had no effect on the total rate of mineralization. To date DOC has tended to be operationally defined according to its chemical and physical properties. An understanding of the composition, production and loss of DOC from a biological perspective is essential if we are to be able to predict the effects of environmental change on the rate of mineralization of soil organic matter. This research has shown that the pools of DOC extracted, using three different methods commonly used in current research, are biochemically distinct and respond differently to the seasons. This suggests some degree of compartmentalisation of biological processes within the soil matrix. The observed similarities between the characteristics of the decomposition dynamics of both peatland and agricultural DOC suggests that either there is little difference in substrate quality between the two systems or that the microbial community have adapted in each case to maximise their utilisation of the available substrate. The dependency of the concentration and biochemical composition of DOC on the seasons requires further work to ascertain which biotic and/or abiotic factors are exerting control. Published research has focussed on factors such as temperature, wet/dry cycles, and freeze/thawing. The effect of the frequency of doses of trace amounts of DOC on increasing the rate of soil organic C mineralization, evident from this research, suggests that the interval between periods of rainfall may be relevant. It also emphasises how it can be useful to use knowledge of a biological process as the starting point in determining which factors may be exerting control on DOC production and loss.

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Goodman, Keli J. "The Effect of In-Line Lakes on Dissolved Organic Matter Dynamics in Mountain Streams." DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/702.

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This research combines observation, experimentation, and modeling to evaluate the influence of lakes on dissolved organic matter (DOM) quantity, quality and export in subalpine watersheds of the Sawtooth Mountain Lake District, central Idaho. First, I conducted an empirical study of the hydrologic and biogeochemical controls on DOM dynamics in stream-lake fluvial networks. I hypothesized that lakes would decrease temporal variability (i.e., buffer) and alter the characteristics of DOM from inflow to outflow. I tested these hypotheses by evaluating DOM temporal patterns and measuring annual export in seven-paired lake inflows and outflows. I then evaluated how ultraviolet (UV) exposure affected DOM characteristics during snowmelt and baseflow, and how UV alters baseflow DOM bioavailability and nutrient limitation. Given that increased water residence time increases UV exposure, I hypothesized that lake outflow DOM would be more photorecalcitrant than DOM from lake inflows. I further hypothesized that UV exposure would increase DOM quality, heterotrophic processing, and nutrient demand. Results indicate that lakes can buffer stream temporal variability by acting as a DOM sink during snowmelt and a DOM source during baseflow. Lake outflow DOM photodegradation was similar to lake inflows during snowmelt (p=0.66). Conversely, outflow DOM was 2X more photorecalcitrant than inflow DOM during baseflow (ANOVA, p=0.03) and was strongly related to water residence time (WRT). During baseflow, light exposure increased inflow and outflow DOM bioavailability (p=0.059 and 0.024, respectively) and nutrient limitation (p=0.03 and 0.09, respectively). Combined, these results indicate that WRT in subalpine lakes strongly influences DOM temporal variability and DOM degradation and processing. Thus, lakes can provide temporal stability of DOM and potentially increase both carbon and nutrient uptake by heterotrophs in lake outflows. I then evaluated how global changes could alter hydrologic and nutrient dynamics in a subalpine lake. Model results indicate that the magnitude and timing of snowmelt runoff can have a substantial effect on water and nutrient exports. In phosphorus (P)-limited lakes, increases in inorganic N concentrations within and exported from lakes are likely to occur with increased temperatures and lake WRT. Increases in atmospheric N deposition will further enhance inorganic N exports in P-limited subalpine lakes.

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Cull, Selby C. "Dynamic digital Mars /." Amherst, Mass. : [s.n.], 2005. http://ddm.geo.umass.edu/ddm-marsmin/.

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A Division III examination in the School of Natural Science, Hampshire College, May 2005. Chairperson, Steven Roof.
Typescript. Also available on the World Wide Web. Includes bibliographical references.

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Langer, André. "Evaluierung von AJAX-basierten frameworks für das Web 2.0." Thesis, Universitätsbibliothek Chemnitz, 2007. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200700484.

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„Remote Scripting“-Anwendungen erleben seit einigen Jahren einen regelrechten Anfrageboom. Während aus usability-Sicht bisher eine strikte Unterscheidung zwischen Desktop-Anwendungen und Webapplikationen herrschte, finden sich seit einiger Zeit zunehmend Angebote im World Wide Web, die diese strikte Trennung verwischen lassen. Interaktive Nutzerdialoge, nebenläufige Prozessabarbeitung und visuelle Unterstützungsmittel wie Drag & Drop- Effekte halten auf Webseiten Einzug, die dem Nutzer bisher nur aus eigenständigen Softwareprodukten in einer spezifischen Betriebssystemumgebung bekannt waren. Viele dieser neuen Anwendungs- und Interaktionsmöglichkeiten im weltweiten Datennetz werden inzwischen unter dem Oberbegriff Web 2.0 zusammengefasst. Für den Nutzer bringt dieser neue Entwicklungstrend viele Vorteile: Ansprechende, intuitive Nutzerführungen ohne die Notwendigkeit, eine ganze Internetseite bei jedem Interaktionsschritt neu zu laden und ohne bemerkbaren zeitlichen Overhead. Was für den Nutzer Erleichterung bringen soll, bedeutet häufig für einen Programmierer zunächst Mehraufwand. Eine Technik zur Realisierung solcher so genannten Rich Internet Applications, die sich in den letzten beiden Jahren immer mehr in den Vordergrund gedrängt hat, wird unter der Bezeichnung AJAX zusammengefasst. Einen einheitlichen Standard gibt es dabei nicht, sodass fast täglich neue AJAX-basierte frameworks veröffentlicht werden, die dem Programmierer (wenigstens einen Teil der) Komplexität der Programmflusssteuerung abnehmen sollen. Aufgabe der Studienarbeit soll es daher sein, das inzwischen unüberschaubar gewordene Angebot an AJAX frameworks zu systematisieren und einen Überblick über Vor- und Nachteile ausgewählter Programmbibliotheken zu geben. Dafür ist ein Kriterienkatalog zu erarbeiten, der eine Bewertung der verschiedenen frameworks nach unterschiedlichen Gesichtspunkten ermöglicht. Besonderer Schwerpunkt ist dabei auf Kriterien aus Programmierersicht (Sprachunabhängigkeit, Overhead, Implementierungsmöglichkeiten,…) und Anwendersicht (Plattformanforderungen, Einarbeitungszeit, Ergebnisqualität, …) zu legen. Auf den Kriterienkatalog ist anschließend eine Auswahl an bereits existierenden, frei verfügbaren AJAX frameworks anzuwenden, die als zukünftig relevant eingeschätzt werden. Die Ergebnisse sind abschließend in einer Gesamtübersicht zu präsentieren, die eine objektive Empfehlung für Nutzer darstellen soll, die vor der Wahl stehen, welche AJAX Programmbibliothek sie zukünftig einsetzen sollten.

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Packer, Brian Noel. "Mercury and Dissolved Organic Matter Dynamics During Snowmelt in a Montane Watershed, Provo River, Utah." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/7427.

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Mercury (Hg) transport in streams is typically facilitated by dissolved organic matter (DOM), however, the dynamics of Hg and DOM during snowmelt in montane watersheds are poorly understood. Hg transport during snowmelt is widely recognized as a significant source of Hg to downstream lakes and reservoirs, such as Jordanelle Reservoir where fish consumption advisories are in effect due to elevated Hg concentrations in certain species of fish. For this study, total mercury (THg), methylmercury (MeHg), and DOM samples were collected at three sites in the upper Provo River, northern Utah, during the 2016 and 2017 water years. To evaluate Hg and DOM sources, samples were collected from snowpack and ephemeral streams in the watershed. In-situ fluorescent DOM (fDOM) data and other parameters were measured in the river to characterize high-frequency variation in water chemistry. Excitation-emissions matrices (EEMs) were used to determine changes in DOM characteristics during snowmelt. Hg concentrations increased in the upper Provo River from <1 ng/L during baseflow to >;7 ng/L during the snowmelt period (~April-July), with filtered THg concentrations approximately ~75% of the unfiltered concentrations. In the watershed, filtered THg concentrations ranged from ~0.4 ng/L in snowpack to ~8 ng/L in ephemeral streams. Annual THg loading from the Provo River to Jordanelle Reservoir was approximately 1 kg/yr with ~90% of the flux occurring during the snowmelt period. High correlations between filtered THg and fDOM allowed for the development of a high frequency filtered THg proxy using in-situ fDOM sensors. DOM characteristic during the snowmelt period showed that Hg transport was facilitated by humic substances which was sourced from upland soils. Fractions of filtered methylmercury (MeHg) and filtered THg (filtered MeHG:filtered THg) were ~0.1 during baseflow and reduced to ~0.01 during snowmelt, implying that snowmelt runoff has little impact on the MeHg flux to Jordanelle Reservoir. The results suggest that Hg and DOM are flushed from soils during snowmelt, and that a significant majority of the Hg flux occurs the snowmelt period. Our study has implications for understanding Hg sources and transport mechanisms in other snowmelt dominated watersheds.

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Shang, Shen. "Bacterial Dynamics in Lake Biwa: from the viewpoints of the interaction with dissolved organic matter and viruses." Doctoral thesis, Kyoto University, 2020. http://hdl.handle.net/2433/253265.

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京都大学
0048
新制・課程博士
博士(工学)
甲第22429号
工博第4690号
新制||工||1732(附属図書館)
京都大学大学院工学研究科都市環境工学専攻
(主査)教授清水芳久, 教授田中宏明, 教授米田稔
学位規則第4条第1項該当
Doctor of Philosophy (Engineering)
Kyoto University
DGAM

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Yilmazturk, Sema Melek. "Three Dimensional Dynamic Response Of A Concrete Gravity Dam." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615455/index.pdf.

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Hydroelectric power is a commonly used alternative source of energy in developing countries. In this regard, concrete gravity dams are the most preferred dam type especially with the developments in the engineering industry. Roller compacted concrete became more popular in dam construction due to its advantages of speed and economy. Several methods are used for the design of concrete gravity dams by analyzing the dam response under static and dynamic loads. This study provides three dimensional linear dynamic analysis of roller compacted concrete gravity dam with a complete dam-foundation-water interaction by using EACD-3D-08 program. Foundation flexibility was included with damping and mass using boundary elements. Three dimensional solid elements were used for the idealization of the dam and water with using finite element methods. Compressibility of water with reservoir absorption was studied. In the light of USACE, performance criteria of linear analyses were assessed. Parametric study was conducted to determine the most influential parameters on the dam response. The importance and necessity of three dimensional analyses were investigated by comparing with linear two dimensional analyses. Linear analyses were then compared with three dimensional nonlinear analyses. In conclusion, the realistic dam seismic response can only be obtained by using three dimensional linear analyses with full interaction of dam-foundation-water.

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Madhavan, Karunagaran. "Managing pollutant dynamics in a lake of varying size: a case study of Warragamba dam, Sydney, Australia." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/13704.

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Non-convex pollution problems characterized by non-linearities and thresholds, or tipping points, are affecting many natural systems that are of significant value for human well-being such as rivers, lakes, estuaries, marine waters and underground aquifers. This thesis is interested in studying pollutant dynamics with non-convex characteristics in a natural system that is varying in size. Significant literature has dealt with the analysis of the pollutant stock dynamics in natural systems over the last two decades or so. This includes literature on shallow lakes, resilience, regime shifts, multiple stable states and threshold effects. One shortcoming of this important literature is that it threats the size of the affected natural systems as fixed across time. However, many natural systems, particularly in the lower latitudes of the Northern Hemisphere and throughout Southern Hemisphere are often experiencing significant changes in their sizes due to variations in environmental factors, e.g. rainfall. This variation in the size of the system significantly influences the pollutant dynamics, with important implications for the economic analysis of the pollution problem and its management. These effects on the pollutant dynamics attributable to the variation in the size of a system have not been previously analyzed explicitly in the economic literature. Furthermore, the management implications from explicitly considering the variation in size are currently unknown. The aim of this study is to understand better the relationship between the variation in size and pollutant dynamics in a natural system that has regular size variation across time. The problem that this thesis is dealing with can be described by the following three vi characteristics: 1) the evolution of pollutant stock in the system across time is affected by changes in system’s size; 2) the stock of pollutant in the system is affected by variation in the inflows of pollutant over time (seasonal variation); 3) pollutant stock dynamics in the system is fundamentally driven by external inflow and internal movement of the pollutant stock within various pools in the system.

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Eidlert, Fredrik. "Messaging and positioning in a dynamic TETRA environment." Thesis, KTH, Kommunikationssystem, CoS, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91498.

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Advanced communication with capabilities such as voice, data, and messaging usually requires an infrastructure with base stations, servers, and etcetera. The TETRA technology offers such communication not only in TMO (infrastructure-based network) but also in DMO where all nodes communicate directly (or via a repeater) with each other. This master’s thesis concerns messaging (specifically short messages) in a dynamic multi link TETRA DMO network. It examines what type of messaging technique to use and how to do path selection. The messages will be clear text, status, and GPS location information. The solution is implemented as a part of the ISIS software (which is developed by Know IT Dataunit). The planned multi link-part of the thesis could not be tested, so there is no implementation or evaluation of this. The evaluation of the implementation concerning sending and reception of messages shows that the proposed solution fulfils the demands for this kind of product. During a four day long test, messages (short text messages and positioning messages) were sent and received while a normal number of voice conversations took place, without packet loss.
Avancerad kommunikation med funktioner såsom röstsamtal, dataöverföring samt meddelandetjänster kräver ofta en infrastruktur med basstationer, servrar etcetera. TETRA-tekniken erbjuder sådan kommunikation, inte bara i TMO (infrastrukturbaserade nätverk), utan även i DMO där alla noder kommunicerar direkt (eller via en repeater) med varandra. Detta examensarbete undersöker hanteringen av meddelanden (framförallt korta meddelanden) i ett dynamiskt multilänkat TETRA nätverk. Det som behandlas är vilken typ av meddelande som bör användas samt hur man väljer väg. De meddelanden som hanteras är klartextmeddelanden, status samt GPS positionsmeddelanden. Den lösning som tagits fram är implementerad som en del i ISIS programvaran (som är utvecklad av Know IT Dataunit). Multilänkdelen kunde inte testas, därför gjordes aldrig någon implementering eller utvärdering. Utvärderingen av implementeringen som hanterar sändning och mottagning av meddelanden visar att den föreslagna lösningen uppfyller de krav man kan ställa på en sådan produkt. Under ett fyra dagar långt test skickades meddelanden (korta textmeddelanden samt positioneringsmeddelanden) medan ett normalt antal röstsamtal pågick, utan någon förlust av paket.

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Alsuleimanagha, Zaid, and Jing Liang. "Dynamic analysis of the Baozhusi dam using FEM." Thesis, KTH, Mark- och vattenteknik (flyttat 20130630), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-171817.

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High magnitude earthquakes have devastating effects that leads to severe human and material losses; when affecting concrete gravity dams, seisms devastate the surrounding habitat through sudden release of reservoir. Dam safety is therefore a significant issue to be accounted in order to prevent the failure of dams located in seismic regions. The Baozhusi dam, the case study of this thesis, was exposed to 8.0 Ms (at the Mercalli scale) Wenchuan earthquake 2008 with intensity of (0.148 g) at the dam site. The earthquake intensity exceeded the design level of the dam (0.1 g); yet, the Baozhusi dam was not severely damaged as showed by tests. The present study case is a modeling and analyzing of the dynamical behavior of the Baozhusi dam during the earthquake duration. The results show that the horizontal component of the ground motion predominate the dynamic response of the dam. It is confirmed that the horizontal component of the ground motion crossed the dam at its axis and therefore minimizing the damages on the concrete gravity dam.

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Ulgen, Deniz. "Dynamic Response And Permanent Displacement Analysis Of Akkopru Dam." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/1260461/index.pdf.

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In this study, dynamic response of Akkö
prü
Dam under earthquake motions is analyzed and the permanent displacements are evaluated. Initially, the critical slip surface of the dam and the corresponding yield acceleration are determined by using the computer program SLOPE. Then, by employing the finite element program SAP2000, static analyses are performed to obtain the mean effective stresses which are used in the determination of dynamic material properties of the dam. Four different scenario earthquakes having a magnitude of 7 are used in the dynamic analyses. Two of those scenarios are taken from European Strong Motion Database and the others are generated by XS artificial earthquake generation program prepared by Erdik (1992). Dynamic analyses of the dam are carried out by the finite element program TELDYN. Permanent displacements of the critical slip surface are calculated by utilizing the Newmark method. Consequently, for an earthquake having a magnitude of M=7 and a peak ground acceleration of 0.20g, the maximum permanent displacement of the dam is found to be 15.90 cm. Furthermore, the permanent displacements of the dam are calculated under base motions having different peak ground acceleration values and it is observed that the rate of increase in the amount of permanent displacements is greater than the increase in the amount of peak ground accelerations.

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Charatpangoon, Bhuddarak. "SEISMIC SAFETY EVALUATION OF EARTH DAM AND POSSIBLE REHABILITATION METHODS." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/192169.

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Vadluga, Vaidas. "Simulation of dynamic deformation and fracture behaviour of heterogeneous structures by discrete element method." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080213_082157-83281.

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Research area and topicality of the work. Mechanical properties and their evolution under loading are the most significant factors for the development of various mechanical structures, technologies and equipment. It seems to be natu-ral that deeper understanding of the behaviour of existing and design of new materials presents a challenge in different research areas. It should be noted, that all the materials are heterogeneous in meso- and micro- scales. They exhibit essential differences, compared to the macroscopic continuum behaviour. Basically, both experimental and numerical simulation methods are extensively applied for investigation purposes. Experimental techniques, capable of giving a realistic view of the inside of the material and extracting the real data, are very expensive. Therefore, the nu-merical simulation tools are extensively used as an alternative for investigation purposes. They have considerable advantages allowing the reproduction of multiple experiments and providing comprehensive data about ongoing phe-nomena. Recently, numerical technologies have become highly multidisciplinary subjects. They comprise phenomenological and statistical ideas, while mathe-matical models employ the relations of continuum mechanics, classical discre-tization methods and molecular dynamics. The Discrete Element Method (DEM) is one of new methods. It is aimed at simulating the dynamic behaviour of the contacting particles. Variable topology of the system of particles is an... [to full text]
Tyrimų sritis ir darbo aktualumas. Kuriant modernias ��vairios paskirties mechanines sistemas, technologijas ir įrangą, svarbiomis tampa jas sudarančios medžiagos. Savaime suprantama, kad žinomos ir naujai kuriamos medžiagos dabar kur kas išsamiau nagrinėjamos daugelyje mokslo šakų, įskaitant ir me-džiagų mechaniką. Visos medžiagos mezo- ir mikrostruktūros požiūriu yra ne-vienalytės. Jų mikroskopinės savybės skirtingos, lyginant su įprastu kontinuu-mu. Medžiagų savybėms tirti dažniausiai taikomi eksperimentiniai metodai. Eksperimentiniais metodais ištirti medžiagos struktūras ir jose vykstančius procesus ir įvertinti tam tikras jų savybes labai brangu. Tai viena priežasčių, kodėl skaitinis modeliavimas tampa realia tyrimų alternatyva. Skaitinį eksperi-mentą galima kartoti daug kartų, valdant bandinio parametrus, išlaikant tas pa-čias sąlygas, ir stebėti reiškiniui būdingus rodiklius visame tūryje. Šiuolaikiniai modeliavimo metodai yra kompleksiniai. Jie jungia fenome-nologines ir statistines idėjas, o matematiniai modeliai sudaromi taikant konti-nuumo mechanikos ir jų diskrečiųjų modelių bei molekulinės dinamikos pri-klausomybes. Diskrečiųjų elementų metodas (DEM) taip pat priskiriamas šiuo-laikinių metodų kategorijai. Jis skirtas kontaktuojančių dalelių sistemų dinami-niam modeliavimui. Kintanti dalelių sistemos topologija – būdingas metodo požymis. Pastaruoju metu DEM jau taikomas kontinuumui modeliuoti ir praktikoje aktualiems irimo uždaviniams spręsti. Reikia pastebėti... [toliau žr. visą tekstą]

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19

Almgren, Björn. "Dynamic load modulation." Thesis, University of Gävle, Department of Technology and Built Environment, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-702.

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The purpose of this master thesis was to study if the drain efficiency of power amplifiers can be maintained at power back off using a technique called load modulation.

The amplifier classes studied are E, F and D-1. The target figure was to obtain a 10 to 12 dB dynamic range of amplitude with reasonable efficiency. Studies of power amplifiers have been made to understand how power is generated. Several different load modulation networks have been evaluated. Attempts to derive design equations for the modulation networks have also been done.

The thesis work was carried out with simulations in ADS 2006. As active devices commercially available bare-die transistor models have been used. The power rating of the dies are 15 W.

A dynamic range of amplitude of over 15 dB has been achieved with drain efficiency greater than 60 percent. The peak output power is in the 40 – 45 dBm range.

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Abbaspour-Fard, Mohammad Hossein. "Discrete element modelling of the dynamic behaviour of non-spherical particulate materials." Thesis, University of Newcastle Upon Tyne, 2000. http://hdl.handle.net/10443/970.

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A numerical model based on the discrete element (DE) method, for modelling the flow of irregularly shaped, smooth-surfaced particles in a 3-D system is presented. An existing DE program for modelling the contact between spherical particles in periodic space (without real walls or boundaries) was modified to model non-spherical particles in a system with containing walls. The new model was validated against analytical calculations of single particle movements and also experimentally against data from physical experiments using synthetic non-spherical particles at both a particle and bulk scale. It was then used to study the effect of particle shape on the flow behaviour of assemblies of particles with various aspect ratios discharging from a flat-bottomed hopper. The particles were modelled using the Multi-Sphere Method (MSM) which is based on the CSG (Constructive Solid Geometry) technique for construction of complex solids by combining primitive shapes. In this method particle geometry is approximated using overlapping spheres of arbitrary diameter which are fixed in position relative to each other. The contact mechanics and contact detection method are the same as those used for spheres, except that translation and rotation of element spheres are calculated with respect to the motion of the whole particle. Numerical simulations of packing and flow of particles from a flat-bottomed hopper with a range of aspect ratios were performed to investigate the effect of particle shape on packing and flow behaviour of a particulate assembly. It was found that the particle shape influenced both bed structure and flow characteristics such as flow pattern, shear band strength and the occurrence of bridging. The flow of the bed of spherical particles was smoother than the flow of beds of elongated particles in which flow was fluctuating and there was more resistance to shear.

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21

Karsäter, Alexander. "”Vi och dom” : ett fenomen i utlandsstyrkan?" Thesis, Swedish National Defence College, Swedish National Defence College, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-811.

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En framgångsfaktor vid internationell tjänst är att samspelet mellan samtliga enheter fungerar friktionsfritt. Detta underlättas om samtliga enheter känner varandra innan rotation till missionsområdet. I framtiden kommer hela förband som har kontraktsanställda soldater rotera ner, dock innehar inteförbanden samtliga funktioner för att lösa alla arbetsuppgifter i missionsområdet. Vid dessa fall lånar man in enheter från andra förband. Inlåningar kan skapa friktioner mellan enheterna. Detta är en fallstudie utav KS14, där man valde att förstärka styrkan med enheter som innehade kompetens inom specialområden. Syftet med denna studie är att skapa en förståelse varför det uppstod friktioner inom KS14 när den förstärktes med en ny enhet. Frågeställningarna är följande: Varför blev det motsättningar mellan KS14 och förstärkningsstyrkan? Hur motsättningar tog sig uttryck? Hur kan dessa motsättningar förklaras? För att besvara frågorna har intervjuer gjorts med tre personer som var med i KS14. Undersökningen visar att det uppstod ett ”vi- och dom” känsla mellan KS14 och den förstärkande enheten. Skälen till detta var dels bristen på kommunikation vad det gäller information om den nya enheten och dels att KS14 hade en historia tillsammans. Dessa motsättningar togs i uttryck genom att man vanhedrade minnestavlan, kom på nedvärderande slogans samt ignorerade förstärkningsstyrkan. Detta berodde på bristen av kommunikation, information och öppenhet mellan de bägge parterna.

A success factor in service abroad is the interplay between all the units work smoothly.This is made easier if all the units know each other before rotating to the area of operation. In future, all units have contracted soldiers rotate down, however, they do not hold all the abilities to solve all tasks in the area of operations. In these cases, it borrows in units from other battalions. These attachments may create frictions between the units. This is a case study out of KS14, which chose to reinforce the contingent with a unit with expertise in specialized areas. The purpose of this study is to create an understanding why there was friction within KS14 when it was reinforced with a new unit. The questions are: Why were there differences between KS14 and reinforcing unit? How the frictions expressed? How do you explain these frictions? To answer these questions interviews have been made with three people who were with the KS14. The study shows that there was an "us and them" feeling between KS14 and the reinforcing unit. The reasons for this were the lack of communication when it comes to information on there inforcing unit and that KS14 already had a history to gether. These frictions were reflected in by disgraced the plaque, came in disparaging slogans and ignored the reinforcing unit. This was due to the lack of communication, information and openness between the two parties.

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Wyburn, Edward Ross. "The Dynamics of Rod-like Intruders in Sheared Granular Flow." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23276.

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While there exist many examples of intruding objects within a granular system, the behaviour of a free-flowing intruder is relatively unknown. The purpose of this thesis is to further our understanding of both free-flowing intruder behaviour and its influence on the surrounding grains. We have analysed the dynamics of a single rod-like intruder within a sheared granular flow of disks, for a range of different elongations and sizes, with a focus on its rotational behaviour. This analysis has been undertaken with both experiments and discrete element method simulations. Experiments were performed within the Stadium Shear Device (2D SSD) at the University of Sydney, with modifications made to the 2D SSD in order to apply photoelasticity and infer intergrain contact forces. The rotational behaviour of the elongated intruders resembles that which is seen in systems of entirely elongated particles. Typically, the rod-like intruders orient themselves at some mean angle to the shear direction, with this mean angle always being counter-clockwise. As the intruders elongate, the mean angle approaches the shear flow direction and the intruder is less likely to deviate away from this angle. Using the photoelastic contact force data, we reconstruct the coarse-grained stress field around the intruder. These results suggest that the influence of a single grain-scale free-flowing intruder is likely small. We also analyse the contact forces which are applied to the intruder; it appears that the origin of the mean angle may lie between the balance of contacts which initiate a rotation of the intruder with the contact forces which are created by this rotation. These findings have implications for both the study of free-flowing intruders, e.g. assisting in predicting the final orientation of steel fibres in fibre-reinforced concrete, and for flows of elongated particles; where we have found the orientational behaviour of elongated grains is not a by-product of these grains ordering.

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23

COLLANTES, FRANK CHRISTOPHER PEREZ. "DYNAMIC BEHAVIOR OF A TAILING DAM WITH SEISMIC HAZARD CONSIDERATIONS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=23913@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
Sismos são considerados um dos desastres naturais mais catastróficos devido ao seu imenso potencial destrutivo, à extensão dos seus efeitos e pela sua súbita e inesperada ocorrência, podendo desencadear sérias consequencias como deslizamentos de encostas, liquefação de solos, corrida de detritos, etc. O estudo da estimativa da ameaça sísmica é de grande importância na engenharia geotécnica, principalmente em obras especiais como barragens, dos pontos de vista sócio econômico, ambiental e de segurança. Análises sísmicas destas geoestruturas mesmo em zonas de baixa sismicidade, como no Brasil, devem ser consideradas como consequência natural de uma boa prática de projeto, pois tais instalações precisam manter-se seguras e em funcionamento durante a sua vida útil, visando à segurança e bem estar da população em geral. A motivação principal da presente dissertação é reunir informações e apresentar métodos de estudo de ameaça sísmica e da resposta dinâmica de obras de terra. Um sistema de contenção de rejeitos de bauxita localizado na Jamaica, em zona de alta atividade sísmica, é analisado procurando-se estabelecer as características fundamentais do terremoto de projeto a partir de uma análise probabilística de ameaça sísmica regional. A estabilidade dos taludes do dique de contenção, bem como os deslocamentos permanentes provocados pelo sismo, são estimados por metodologias simples (método de estabilidade pseudo-estático, método de Newmark) e soluções mais complexas baseadas no método dos elementos finitos.
Earthquakes are considered one of the most catastrophic natural disasters due to its immense destructive potential, the extent of its effects and its sudden and unexpected occurrence, which can trigger serious consequences such as landslides, soil liquefaction, debris flow, etc. The study of seismic hazard is of great importance in geotechnical engineering, especially in cases involving special structures such as earth dams, under the socio-economic, environmental and security points of view. Seismic analysis of such special structures, even in areas of low seismicity as in Brazil, should be considered as a natural consequence of good design practice, since these facilities do need to remain safe and operational during their entire lifetime. The main motivation of this dissertation is to gather information and to present and discuss methods for the estimate of the seismic hazard and evaluation of the dynamic response of earth works. A tailings dam system located in Jamaica, within an area of high seismic activity, is analyzed in this dissertation, with the objective to establish the fundamental characteristics of the earthquake design from a probabilistic analysis of the regional seismic hazard. The slope stability of the dike and the permanent displacements caused by the earthquake are estimated by simple methods (pseudo-static stability method, Newmark method) and more complex solutions based on the finite element method.

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24

Lowery, Kristen Mary. "Dynamic Analysis of an Inflatable Dam Subjected to a Flood." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35802.

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A dynamic simulation of the response of an inflatable dam subjected to a flood was carried out to determine the survivability envelope of the dam where it can operate without rupture, or overflow. A fully nonlinear free-surface flow was applied in two dimensions using a mixed Eulerian-Lagrangian formulation.

An ABAQUS finite element model was used to determine the dynamic structural response of the dam. The problem was solved in the time domain which allows the prediction of a number of transient phenomena such as the generation of upstream advancing waves, and dynamic structural collapse. Stresses in the dam material were monitored to determine when rupture occurs. An iterative study was performed to find the service envelope of the dam in terms of the internal pressure and the flood Froude number for two flood depths. It was found that the driving parameter governing failure of the dam was the internal pressure. If this pressure is too low, the dam overflows; if this pressure is too high, the dam ruptures. The fully nonlinear free-surface flow over a semi-circular bottom obstruction was studied numerically in two dimensions using a similar solution formulation as that used in the previous study. A parametric study was performed for a range of values of the depth-based Froude number up to 2.5 and non-dimensional obstacle heights up to 0.9. When wave breaking does not occur, three distinct flow regimes were identified: subcritical, transcritical and supercritical. When breaking occurs it may be of any type: spilling, plunging or surging. In addition, for values of the Froude number close to 1, the upstream solitary waves break. A systematic study was undertaken, to define the boundaries of each type of breaking and non-breaking pattern, and to determine the drag and lift coefficients, free surface profile characteristics and transient behavior.
Master of Science

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25

Massie, Mason(Massie R. ). "Design architecture for dynamic low inertia multi DOF robotic manipulators." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/127904.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, May, 2020
Cataloged from the official PDF of thesis.
Includes bibliographical references (page 60).
This thesis is intended as a background for robotic designers interested in creating low inertia, high bandwidth, multi DOF robotic arms and hands capable of proprioceptive force feedback from the world. This thesis briefly outlines the physics that govern the dynamics of robotic manipulators. It further covers various actuators and transmissions along with their dynamic and mechanical properties. Finally, this thesis covers overall robotic arm and hand architecture; where degrees of freedom can be placed and how actuators can be mounted and transmitted.
by Mason Massie.
S.B.
S.B. Massachusetts Institute of Technology, Department of Mechanical Engineering

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26

Wessling, Albin. "Towards Discrete Element Modelling of Rock Drilling." Licentiate thesis, Luleå tekniska universitet, Material- och solidmekanik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83911.

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27

Hagström, Patrik. "Determination of dry density in tailings with a Dynamic Cone Penetrometer :." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-66993.

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Today mines produce metals which are used for everyday products by people worldwide. When metals are produced, waste products known as tailings are generated. These tailings are commonly stored in impoundments, surrounded by embankment dams. The demands from the society are constantly increasing regarding the quality and safety of dams. One step in development towards a better control regarding safety and quality of tailing dams, could be to compact the beach. Today there is a lack of methods to easy check the dry densities over large areas for a compacted material. Since these dams can be large structures with embankment lengths of several kilometers, it is necessary to be able to check the density with a fast method. In this thesis it was investigated if the dry density, and correspondingly the compaction, can be checked with a Dynamic Cone Penetrometer (DCP). In the thesis the dry density of tailings was compared with penetration rate of the DCP. A laboratory setup was made with a test box filled with tailings provided by Boliden AB from the Aitik mine. Six different box tests were performed, each test with different compaction. From the tests a trend was observed, for which the tailings increased in density as the DCP indexes showed an increased resistance. A relationship between DCP index and dry densities was found. Though a relationship was found, it is important to emphasize that the tests were carried out in an environment that was easy to control. One test with high water content showed that water was influencing the DCP index results. Therefore it was concluded that if the DCP will be used in field, the water content also has to be checked.

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28

Tongur, Can. "Seasonal Adjustment and Dynamic Linear Models." Doctoral thesis, Stockholms universitet, Statistiska institutionen, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-89496.

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Dynamic Linear Models are a state space model framework based on the Kalman filter. We use this framework to do seasonal adjustments of empirical and artificial data. A simple model and an extended model based on Gibbs sampling are used and the results are compared with the results of a standard seasonal adjustment method. The state space approach is then extended to discuss direct and indirect seasonal adjustments. This is achieved by applying a seasonal level model with no trend and some specific input variances that render different signal-to-noise ratios. This is illustrated for a system consisting of two artificial time series. Relative efficiencies between direct, indirect and multivariate, i.e. optimal, variances are then analyzed. In practice, standard seasonal adjustment packages do not support optimal/multivariate seasonal adjustments, so a univariate approach to simultaneous estimation is presented by specifying a Holt-Winters exponential smoothing method. This is applied to two sets of time series systems by defining a total loss function that is specified with a trade-off weight between the individual series’ loss functions and their aggregate loss function. The loss function is based on either the more conventional squared errors loss or on a robust Huber loss. The exponential decay parameters are then estimated by minimizing the total loss function for different trade-off weights. It is then concluded what approach, direct or indirect seasonal adjustment, is to be preferred for the two time series systems. The dynamic linear modeling approach is also applied to Swedish political opinion polls to assert the true underlying political opinion when there are several polls, with potential design effects and bias, observed at non-equidistant time points. A Wiener process model is used to model the change in the proportion of voters supporting either a specific party or a party block. Similar to stock market models, all available (political) information is assumed to be capitalized in the poll results and is incorporated in the model by assimilating opinion poll results with the model through Bayesian updating of the posterior distribution. Based on the results, we are able to assess the true underlying voter proportion and additionally predict the elections.

At the time of doctoral defence the following papers were unpublished and had a status as follows: Paper 3: Manuscript; Paper 4: Manuscripts

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Semones, Molly Catherine. "Dynamics in the reactivity and photochemical production of hydroxyl radical in treated wastewater effluent and aquatic dissolved organic matter." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1482849720513842.

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Chen, Rui. "Dynamic optimal control for distress large financial networks and Mean field systems with jumps Optimal connectivity for a large financial network Mean Field BSDEs and Global Dynamic Risk Measures." Thesis, Paris Sciences et Lettres (ComUE), 2019. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=2019PSLED042.

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Cette thèse propose des modèles et des méthodes pour étudier le contrôle du risque dans de larges systèmes financiers. Nous proposons dans une première partie une approche structurelle : nous considérons un système financier représenté comme un réseau d’institutions connectées entre elles par des interactions stratégiques sources de financement mais également par des interactions qui les exposent à un risque de contagion de défaut. La nouveauté de notre approche réside dans le fait que ces deux types d’interaction interfèrent. Nous proposons des nouvelles notions d’équilibre pour ces systèmes et étudions la connectivité optimale du réseau et le risque systémique associé. Dans une deuxième partie, nous introduisons des mesures de risque systémique définies par des équations différentielles stochastiques rétrogrades dirigées par des opérateurs à champ moyen et étudions des problèmes d’arrêt optimal associés. La dernière partie aborde des questions de liquidation optimale de portefeuilles
This thesis presents models and methodologies to understand the control of systemic risk in large systems. We propose two approaches. The first one is structural : a financial system is represented as a network of institutions. They have strategic interactions as well as direct interactions through linkages in a contagion process. The novelty of our approach is that these two types of interactions are intertwined themselves and we propose new notions of equilibria for such games and analyze the systemic risk emerging in equilibrium. The second approach is a reduced form.We model the dynamics of regulatory capital using a mean field operator : required capital depends on the standalone risk but also on the evolution of the capital of all other banks in the system. In this model, required capital is a dynamic risk measure and is represented as a the solution of a mean-field BDSE with jumps. We show a novel dual representation theorem. In the context of meanfield BSDEs the representation gives yield to a stochastic discount factor and a worst-case probability measure that encompasses the overall interactions in the system. We also solve the optimal stopping problem of dynamic risk measure by connecting it to the solution of reflected meanfield BSDE with jumps. Finally, We provide a comprehensive model for the order book dynamics and optimal Market making strategy appeared in liquidity risk problems

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Bramsäter, Jenny, and Kajsa Lundgren. "Study on the Dynamic Control of Dam Operating Water Levels of Yayangshan Dam in Flood Season." Thesis, KTH, Industriell ekologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174877.

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Water levels up- and downstream of dams are strongly affected by water levels in the reservoir as well as the discharge of the dam. To ensure that no harm comes to buildings, bridges or agricultural land it is important to ensure that the water level in the reservoir is adjusted to handle large floods. This report studies within what range the water level in the reservoir of the Yayangshan dam, located in Lixian River, can vary without causing any flooding downstream the dam or at the Old and New Babian Bridge located upstream the dam. By calculation of the designed flood, flood routing- and backwater computation, initial water level ranges in the reservoir have been set for the pre-flood, main flood and latter flood season for damages to be avoided. Due to the far distance between the dam site and the bridges, backwater effects had no influence on the limitations of the initial water level in the reservoir.

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Amaya, Jorge. "Simulation instationnaire du couplage entre la convection, la conduction et le rayonnement sur des architectures parallèles pour des applications en combustion." Phd thesis, Institut National Polytechnique de Toulouse - INPT, 2010. http://tel.archives-ouvertes.fr/tel-00554889.

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Dans l'industrie aéronautique, la génération d'énergie dépend presque exclusivement de la combustion d'hydrocarbures. La meilleure façon d'améliorer le rendement de ces systèmes et de contrôler leur impact environnemental, est d'optimiser le processus de combustion. Avec la croissance continue du de la puissance des calculateurs, la simulation des systèmes complexes est devenue abordable. Jusqu'à très récemment dans les applications industrielles le rayonnement des gaz et la conduction de chaleur dans les solides ont été négligés. Dans ce travail les outils nécessaires à la résolution couplée des trois modes de transfert de chaleur ont été développés et ont été utilisés pour l'étude d'une chambre de combustion d'hélicoptère. On montre que l'inclusion de tous les modes de transfert de chaleur peut influencer la distribution de température dans le domaine. Les outils numériques et la méthodologie de couplage développés ouvrent maintenant la voie à un bon nombre d'applications tant scientifiques que technologiques.

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Vrbka, Marek. "Dynamická karta rozpočtového ukazatele rodinného domu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240123.

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This master thesis describes a detached house, requirements for the detached house, price, technical-economic index and card of cost indicator. The author performed an analysis of selected houses and itemized budgets of selected houses. Different shapes, technologies and solutions of materials are included in the analysis. The author, from the analysis, inferred the behavior of technical-economic index (TEI) of detached houses. The author described behavior in the particular and sub models. The author suggested methodology of calculation of the price data, the spatial data and the structure of price TEICF2 (technical-economic index, complex formula, version 2) of planned detached house. The author founded his methodology on particular and sub models. The principle of methodology TEICF2 consists in the analogy of the planned detached house with the model with same parameters. The author implemented TEICF2 into application dyCBI. Application dyCBI is working on Microsoft Excel.

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Cavaliere, Emily Homann Peter S. "Elwha River sediments : phosphorus dynamics under diverse environmental conditions /." Online version, 2010. http://content.wwu.edu/cdm4/item_viewer.php?CISOROOT=/theses&CISOPTR=344&CISOBOX=1&REC=18.

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FAJARDO, RAUL IVAN CONTRERAS. "NUMERICAL PREDICTION OF THE DYNAMIC BEHAVIOR OF BREAPAMPA DAM IN PERU." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=25017@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
Esta pesquisa investiga o comportamento sísmico da barragem de terra de Breapampa, situada no Peru em zona de atividade sísmica. A previsão numérica é feita com auxílio do programa computacional FLAC 2D v.7, baseado no método das diferenças finitas. É simulada a construção incremental da barragem, a elevação gradual do nível d água do reservatório durante a etapa do primeiro enchimento do reservatório, é estabelecida a posição da linha freática em regime de fluxo permanente e são calculados os fatores de segurança estático da estabilidade dos taludes nas condições de final da construção e após o primeiro enchimento do reservatório. A simulação do comportamento sísmico da barragem é feita em seguida, discutindo-se vários e importantes aspectos que devem ser considerados para uma correta análise como a seleção do terremoto de projeto, a filtragem de altas frequências para minimizar o número de elementos da malha, a introdução de condições de contorno silenciosas, a escolha de modelos constitutivos incluindo a incorporação de amortecimento histerético, entre outros pontos. A resposta sísmica da barragem, nas condições de reservatório vazio e reservatório cheio, foi obtida em termos de deslocamentos permanentes, história de deslocamentos, amplificações da aceleração horizontal, desenvolvimento de poropressões no corpo da barragem e potencial de ruptura cíclica no material do núcleo.
This research investigates the seismic behavior of the Breapampa earth dam, situated in Peru within a seismic activity zone. The numerical prediction is carried out using the computer program FLAC 2D v.7, based on the finite difference method. it is simulated the incremental construction of the dam, the gradual raise of the water level during the stage of reservoir impounding, the establishment of the phreatic line under steady state flow and the determination of safety factor for the stability of the soil slopes considering both conditions of after construction and after reservoir impounding. The modeling of the seismic behavior of the dam is then made with detailed discussion of several important aspects for a correct analysis such as the selection of the design earthquake, the filtering of high frequencies in order to minimize the number of elements in the mesh, the introduction of silent boundaries, the choice of proper constitutive soil models including the representation of hysteretic damping, among others points. The seismic response of the dam, under the conditions of full and empty reservoir, was obtained in terms of permanent displacements, displacement history, amplifications horizontal acceleration amplification, porepressure distribution and potential of cyclic failure in the saturated material of the core of the dam.

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Ridley, Luke McDonald. "Study of dissolved organic matter in peatlands : molecular characterisation of a dynamic carbon reservoir." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/9772.

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Northern peatlands represent a significant carbon reservoir, containing approximately a third of the terrestrial carbon pool. The stability of these carbon stores is poorly understood, and processes of accumulation and degradation appear to be finely balanced. Over the last decade, it has become increasingly clear that losses of dissolved organic carbon (DOC) from peatlands can be of considerable size and this flux appears to have increased substantially over the last 20 years. Despite its significance, the chemical composition of peatland-derived DOC remains poorly understood. This study aimed to characterise dissolved organic matter (DOM) at the molecular level using a novel combination of techniques. The study site (Cors Fochno, Wales, UK) is an ombrotrophic bog on which a number of studies into carbon cycling and hydrology have been carried out, providing a useful context for this project. The size and compositions of the DOC pool was monitored over 18 months, from three banks of piezometers, sampling from depths of 15 cm to 6 m. DOM which is representative of bog runoff was also monitored. DOC concentrations varied considerably between locations, spanning an order of magnitude (11.4 to 114 mgC l-1). Several relationships between DOC concentration and environmental and physical factors were established: DOC levels near the surface of the peatland varied with temperature, those in the runoff were most affected by recent rainfall events and the apparent DOC concentration at depth was related to the hydraulic conductivity of peat at that depth. The annual flux of DOC from the site was estimated at 113 tonnes, or 17.4 gC m-2. Only a small portion of the DOC pool could be characterised by analysis of dissolved combined amino acids (DCAA) and dissolved carbohydrates (as neutral sugars). Non-protein amino acids were most abundant in runoff samples, suggesting microbial reworking of DOM on entering drainage systems. DCAA yields decreased with depth, and the DCAA pool in deeper peat layers was characterised by more hydrophobic compounds. Interpretation of semi-quantitative results from TMAH thermochemolysis GC-MS analysis suggested oxidative degradation of organic matter near the surface of the peatland and photochemical degradation where DOM entered drainage networks, and this was supported by novel interpretation of results from ultrahigh resolution mass spectrometry analysis. The deepest porewaters were dominated by nalkanes, with notable contributions from fatty acids, suggesting a plant wax source for this DOM. The highest DOC concentrations were found at intermediate depth from a site midway between the centre of the bog and the southern boundary where hydraulic conductivities were low, and DOM from these piezometers were characterised by high contributions from a suite of phenolic compounds (with mainly para-hydroxyphenyl structures). These compounds have been linked to Sphagnum species, and are known to be functionally important to the development and maintenance of the unusual chemical environment in peatlands which slows decay rates, reduces microbial activity, and allows the sequestration of the large carbon reservoir. The findings of this study highlight the dynamic nature of peatland derived DOM, both in the size of the carbon pool and its composition which change dramatically with both season and depth.

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Winker, Henning. "Post-impoundment population dynamics of non-native common carp Cyprinus Carpio in relation to two large native cyprinids in Lake Gariep, South Africa." Thesis, Rhodes University, 2011. http://hdl.handle.net/10962/d1005156.

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To contribute to the understanding of the invasion biology of common carp Cyprinus carpio in southern Africa, this thesis investigated the life history, relative abundance, long-term population demographics and trophic niche utilisations of non-native common carp C. carpio in relation to two endemic cyprinids, Orange River mudfish Labeo capensis and smallmouth yellowfish Labeobarbus aeneus in South Africa‟s largest impoundment, Lake Gariep. The growth zone deposition rates in astericus otoliths of the three species were validated as biannual for C. carpio and as annual for L. capensis and L. aeneus, which allowed for reliable estimation of lengths-at-age upon which growth, age-at-maturity and mortality rates could be estimated. Cyprinus carpio exhibited fast growth, matured relatively early at two years of age and attained a maximum age of seven years. Labeo capensis grew significantly slower, but attained older ages of up to 12 years. Females showed notably delayed maturation at approximately six years of age. The life history parameter estimates for L. aeneus were similar to those of L. capensis. These species-specific life history characteristics contributed to a substantially higher population growth potential of C. carpio compared to L. capensis and L. aeneus. Delta-lognormal and delta-gamma Generalized Linear Models (GLMs) were used to analyse patterns of relative abundance of L. capensis, L. aeneus and C. carpio. The application of these GLMs was necessary to account for large proportions of zeros and strong skewness in the catch-per-unit-effort (CPUE) from experimental gillnet and fisheries-dependent angler surveys. Confidence intervals around predicted abundance indices were obtained through the development of a generalised parametric bootstrap procedure. The resulting standardised abundance indices were coupled with results from analysis of stable isotope ratios of fish tissues and potential food resources and revealed that C. carpio was mainly confined to soft-bottom habitats, where it predominantly foraged on benthic invertebrates. Labeo capensis was abundant in a wide range of benthic habitats and was consumed basal food resources such as detritus. Labeobarbus aeneus was found to feed mostly on pelagic zooplankton. There were no significant interspecific differences in trophic niche space, suggesting limited resource competition among the three species. Standardised historical and contemporary gillnet CPUE data indicated slow population growth rates of L. capensis and L. aeneus during the first ten years postimpoundment, but showed high biomass levels some four decades after impoundment. These results could be corroborated by stochastic age-structured production model (ASPM) simulations. In contrast to the two endemic species, the gillnet CPUE of C. carpio showed a clear „boom and bust‟ pattern, which, based on ASPM simulations, could be best explained by increased food availability during the first five years postimpoundment, followed by suboptimal conditions thereafter. Together, these results provided evidence that the establishment of the C. carpio population did not prevent the slow but successful long-term establishment of the two large endemic cyprinids. Both endemic fishes revealed specialised feeding within the impoundment.

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Roy, Amber Joyce. "Dynamic Grid-Based Data Distribution Management in Large Scale Distributed Simulations." Thesis, University of North Texas, 2000. https://digital.library.unt.edu/ark:/67531/metadc2699/.

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Distributed simulation is an enabling concept to support the networked interaction of models and real world elements that are geographically distributed. This technology has brought a new set of challenging problems to solve, such as Data Distribution Management (DDM). The aim of DDM is to limit and control the volume of the data exchanged during a distributed simulation, and reduce the processing requirements of the simulation hosts by relaying events and state information only to those applications that require them. In this thesis, we propose a new DDM scheme, which we refer to as dynamic grid-based DDM. A lightweight UNT-RTI has been developed and implemented to investigate the performance of our DDM scheme. Our results clearly indicate that our scheme is scalable and it significantly reduces both the number of multicast groups used, and the message overhead, when compared to previous grid-based allocation schemes using large-scale and real-world scenarios.

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Barnes, Andrew Charles. "Development of a Wire Bonding Process for Microsystems Fabricated From Polyvinyl Acetate - Nanocomposite." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1302118642.

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Marques, Beatriz Leal. "Efeito do Dynamic Tape na redução dos efeitos da sensação retardada de desconforto muscular." Bachelor's thesis, [s.n.], 2017. http://hdl.handle.net/10284/6256.

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Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciada em Fisioterapia
Objetivo: Verificar de que forma a utilização do Dynamic Tape no quadricípite após um exercício de dano muscular (EDM) contribuiria para a redução da sintomatologia associada à SRDM. Metodologia: Dezassete participantes do sexo masculino foram submetidos a um exercício de dano muscular (EDM) de modo a induzir a SRDM. Posteriormente foram, aleatoriamente distribuídos em dois grupos: controlo, sem Dynamic Tape (SDT) e um grupo com Dynamic Tape (DT), com uma aplicação a nível do grupo extensor. Todos os indivíduos foram avaliados antes (pré) e após (0h, 24h, 48h e 72h) o EDM, avaliando-se a capacidade funcional, dor, força muscular e limiar de dor à pressão em quatro pontos do quadricípite. Resultados: O protocolo de EDM induziu SRDM. Verificaram-se diferenças estatisticamente significativas, entre os dois grupos, na avaliação da força e potência do quadricípite aos 300º/s, evidenciando-se diferenças significativas às 24, 48 e 72h após o EDM. Na potência verificaram-se diferenças significativas entre os grupos após 48h e 72h do EDM. Obtiveram-se diferenças estatisticamente significativas entre os grupos no tempo de aceleração dos isquiotibiais a 300º/s 48 e 72h após o EDM. Conclusão: A aplicação do Dynamic Tape, produziu ligeiros efeitos na redução da SRDM.
Objective: Verify how the use of Dynamic Tape in the quadriceps after a muscle damage exercise (MDE) may contribute to the symptoms associated with Delayed Onset Muscle Soreness (DOMS). Methodology: Seventeen male participants underwent a MDE in order to induce DOMS. Subsequently, they were randomly distributed in two groups: control, without Dynamic Tape (SDT), and a group with Dynamic Tape (DT) with an application on the extensor group. All subjects were evaluated before (pré) and after (0h, 24h, 48h and 72h) the EDM. It was evaluated the functional capacity, pain, muscle strength and pressure threshold on four points of the quadriceps. Results: The EDM protocol induced DOMS. There were statistically significant differences between the groups in the assessment of strength and potency of the quadriceps at 300º/s, 24, 48 and 72 hours after the EDM. Potency wise there were significant differences between groups after 48h and 72h of the EDM. Statistically significant differences were obtained between the groups regarding hamstring acceleration time at 300º/s, 48 and 72h after the EDM. Conclusion: The application of Dynamic Tape lightly reduced DOMS.
N/A

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Stalions, Eric Wesley. "Dynamic Criteria Mapping: A Study of the Rhetorical Values of Placement Evaluators." Bowling Green, Ohio : Bowling Green State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=bgsu1182262492.

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Kellerman, Anne Marie. "Molecular-level dissolved organic matter dynamics in lakes : Constraints on reactivity and persistence." Doctoral thesis, Uppsala universitet, Limnologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-248671.

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Dissolved organic matter (DOM) is a central component of the global carbon cycle. Thus, small changes to the amount of DOM imported, processed and produced within lakes can have a large effect on regional carbon budgets. In addition to being a vital energy source at the base of the aquatic food web, DOM is physico-chemically reactive. However, identifying and understanding the controls of DOM processing has remained challenging due to the complex composition of DOM. DOM comprises a mixture of decomposition by-products of terrestrial origin as well as newly synthesized material from in situ production. DOM compounds form gradients of reactivity to biogeochemical processes, such as photodegradation, biodegradation, and flocculation, and they perform a suite of functions in aquatic systems. The overarching goal of this thesis was to investigate controls of DOM processing in Swedish lakes. We do this in two ways: 1) by characterizing the molecular-level composition of DOM in lakes, and 2) by investigating interactions between very labile and relatively recalcitrant DOM. The first three chapters utilize ultrahigh resolution mass spectrometry to show that the detailed chemical composition of DOM varies along a hydrology gradient, and secondarily along a temperature gradient that co-varies with agriculture and nutrients. Next, we illustrate the coherence between molecular-level characteristics and bulk optical characteristics. Together, these studies suggest that protein-like fluorescence, aliphatic compounds, and N-containing compounds are either resistant to degradation or tightly cycled in the system, and thus persist at long water residence times. The most oxidized compounds, such as vascular plant-derived polyphenolic compounds, are abundant in areas with high precipitation and are lost with increasing water residence time. Vascular plant-derived polyphenolic compounds were most strongly related to DOM with high apparent molecular weight, suggesting that hydrophobic interactions drive aggregate formation. Furthermore, the association of high molecular weight DOM with polyphenolic compounds suggests that aggregates are hotspots of reactivity in aquatic systems. Finally, we find no indication that the addition of labile organic matter enhances the biodegradation of less reactive DOM. Thus, we suggest that in freshwaters, intrinsic molecular properties, such as the basic structural features of compounds, dominate over extrinsic factors.

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Assem, Ali. "Vibrations mécaniques et non linéaires : théorie de l'index pour des systèmes gyroscopiques." Paris 9, 1987. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1987PA090080.

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On étudie les solutions d'un système différentiel du type gyroscopique régi par une équation du type X + 2K X + V'(X) = O, K un opérateur antisymétrique de matrice CJ, où J est la matrice symplectique telle que JJ = -I et V un potentiel de classe C**(2) (R**(2N),R), strictement convexe. On étudie deux cas, le premier suppose V super quadratique. En utilisant Ambrosetti-Rabinowitz, on montrera l'existence d'une solution T-périodique, puis on élabore une théorie de l'index pour ce genre de système, afin de démontrer la minimalité de la période T pour c suffisamment petit. Le second cas suppose V sous quadratique, on énoncera alors un résultat d'existence en utilisant une méthode de minimisation

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Bastviken, Paulina. "Soil water solution DOC dynamics during winter in boreal hillslopes." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-229128.

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When plants and animals die they are decomposed into microscopic particles of organic carbon. In the ground, these carbon particles are dissolved in the soil water and eventually transported to the streamchannel with the flow of the groundwater. Today the quantities of dissolved organic carbon (DOC) have been observed to increase in many lakes and streams around the world, which constitute a threat against the water quality and ecologic environment of these surface waters. The amount of organic carbon that is dissolved and transported in the soil water is mainly controlled by processes related to temperature and hydrology, two factors which vary seasonally. Because of difficulties to sample soil water at temperatures below 0°C studies of DOC transport between soil and water during the winter season are limited. This study therefore conducted a winter sampling of soil water, with the focus on DOC. Samples were collected in March 2014 at sites along three hillslopes, orthogonal to two streams, in a typical Swedish boreal forest northwest of Umeå. The soil water was extracted with the help of suction lysimeters installed at different depths in the soil, and heating equipmentpowered by batteries. The collected samples were analyzed for DOC concentration and absorbance after which the results were grouped together with results from previous sampling campaigns, conducted in the summer and autumn of 2013. Parallel to this, data representing a longer time series (2009 to 2012) at another hillslope was processed. During the summer and autumn an increase in DOC concentration was observed. The increase was assumed to be caused by high production and effective degradation of organic matter in the soil during this warm period. Generally, a decrease in the DOC concentration then followed during the winter season. One possible reason for this decrease could be that the bacterial degradation in the soil continued, during the winter, and transformed the dissolved carbon into CO2 and CH4. Another possibility is that the DOC was flushed into the streams by autumn rain events. The study also found differences concerning the DOC concentration and character in the soil water, as well as the seasonal variation of these parameters, with soil depth and distance from the stream along the hillslope profile. These differences could be correlated to the organic content of the soil, from which the soil water had been extracted.

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Dauvermann, Maria Regina. "Investigation into functional large-scale networks in individuals with schizophrenia using fMRI data and Dynamic Causal Modelling." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/10022.

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Schizophrenia is a complex and severe psychiatric disorder with positive symptoms, negative symptoms and cognitive deficits. Preclinical neurobiological studies showed that alterations of dopaminergic and glutamatergic neurotransmitter circuits involving the prefrontal cortex resulted in cognitive impairment such as working memory. Functional activation and functional connectivity findings of functional Magnetic Resonance Imaging (fMRI) data provided support for prefrontal dysfunction during fMRI working memory tasks in individuals with schizophrenia. However, these findings do not offer a neurobiological interpretation of the fMRI data. Biophysical modelling of functional large-scale networks has been designed for the analysis of fMRI data, which can be interpreted in a mechanistic way. This approach may enable the interpretation of fMRI data in terms of altered synaptic plasticity processes found in schizophrenia. One such process is gating mechanism, which has been shown to be altered for the thalamo-cortical and meso-cortical connection in schizophrenia. The primary aim of the thesis was to investigate altered synaptic plasticity and gating mechanisms with Dynamic Causal Modelling (DCM) within functional large-scale networks during two fMRI tasks in individuals with schizophrenia. Applying nonlinear DCM to the verbal fluency fMRI task of the Edinburgh High Risk Study, we showed that the connection strengths with nonlinear modulation for the thalamo-cortical connection was reduced in subjects at high familial risk of schizophrenia when compared to healthy controls. These results suggest that nonlinear DCM enables the investigation of altered synaptic plasticity and gating mechanism from fMRI data. For the Scottish Family Mental Health Study, we reported two different optimal linear models for individuals with established schizophrenia (EST) and healthy controls during working memory function. We suggested that this result may indicate that EST and healthy controls used different functional large-scale networks. The results of nonlinear DCM analyses may suggest that gating mechanism was intact in EST and healthy controls. In conclusion, the results presented in this thesis give evidence for the role of synaptic plasticity processes as assessed in functional large-scale networks during cognitive tasks in individuals with schizophrenia.

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46

Hedman, Stefan. "Smooth and non-smooth approaches to simulation of granular matter." Thesis, Umeå universitet, Institutionen för fysik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-50584.

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Granular matter is defined as a collection of particle grains, such as sand.This type of matter have different characteristics (solid, liquid and gas) depending on the energy level per grain. There are several approaches to modeling and numerical simulations of granular matter. They are used by different groups for different purposes, and the choice between the approaches is based on knowledge and tradition rather than what might be best for the purpose. The key questions are when to use what method and what physical quality is lost depending on the choice.Two regimes of discrete element granular simulations emerge: smooth and non-smooth. To compare the efficiency and physical quality of the two approaches, four physics softwares are examined including Bullet Physics, LMGC90, AgX and LIGGGHTS. Test scenes are setup in each software and the results are compared to each other or to the results of other work.The thesis is performed at UMIT Research Lab at Umeå University.

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Stimson, Andrew Graham. "Fluvial carbon dynamics in degraded peatland catchments." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/fluvial-carbon-dynamics-in-degraded-peatland-catchments(94f066bd-cf18-4de3-9e4f-339476994fbf).html.

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Inland waters including streams, rivers, reservoirs and lakes are regarded as a significant site of Organic Carbon (OC) cycling, and greenhouse gas production. As a result, there has been significant recent interest in the rates and fate of fluvial carbon exported from organic soils, such as peatlands. Additionally, peatlands can be subject to substantial degradation resulting in high rates of fluvial OC export, and this has led to efforts to repair degraded peatlands through restoration programmes. As a consequence, the study of degraded areas is useful to quantify the upper values of carbon release, understand processes of transformation, and evaluate the success of restoration programmes. Importantly peatlands are also collection areas for drinking water, which has implications for treatment, and requires better understanding of carbon cycling upstream of treatment works, in headwater rivers, reservoirs and pipes. UK upland blanket peat catchments are a key location in which to consider global questions surrounding fluvial carbon export and transformations, as they are highly degraded, provide a source of drinking water supply, and are currently undergoing pioneering methods of landscape scale restoration. This thesis considers Kinder Scout, an area of highly degraded and gullied blanket peatland in the South Pennines, UK. Using analysis of water samples collected over several years in the Kinder reservoir catchment and plateau, this thesis presents three novel contributions to global questions concerning OC cycling and peatlands. Firstly it provides (to date), the only carbon budget for a reservoir in a peat dominated catchment with high Particulate Organic Carbon (POC) export, which demonstrates that reservoirs may be net sources of Dissolved Organic Carbon (DOC), with the implication that POC-DOC interactions are important OC transformation mechanism in degraded systems. Secondly through use of a unique integrated combination of methods, it considers changes in carbon flux and composition in both river, lake and pipe locations, providing detailed understanding of the relative roles of river reaches, reservoirs and supply pipes, in controlling fluvial carbon cycling in peatland systems, and upstream of water treatment works. An important implication here, is that rate and direction of change in water treatability varies through a catchment. Finally, it includes results from the first widespread monitoring of the catchment scale effects of a new method of peatland revegetation. This restoration approach is being applied at landscape scale and the findings here, are that despite fears to the contrary, it does not lead to short term increases in fluvial carbon loss, which is an important piece of evidence supporting practical conservation approaches in these systems. To further enhance this research, a combination of field and laboratory investigations into carbon transformation processes, and ongoing restoration mentoring should be undertaken.

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Ardalan, Arman. "Molecular Profiling of the Population Dynamics : Foundation and Expansion of an Archaic Domesticate." Doctoral thesis, KTH, Genteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95688.

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"An ‘exponential growth of science’ throughout modern history has been frequently boasted by numerous narcissistic accounts of ‘modern humanity.’ Nonetheless, ‘modern science’ seems to have overwhelmingly compromised on its original promises by fitting into an ‘industrial scheme.’ With this concern, ‘molecular phylogeographics with conservational ambitions’ would look an intact ground for research efforts in a ‘school of biotechnology.’ The dog (Canis familiaris) as an earliest domestic animal has a history of conflicts over its origins and dispersal. Having those disputes addressed, valuable knowledge could be acquired on the nature and dynamics of domestication, and of human societies particularly of pre-agricultural ages. We employed two most widely-used genealogical markers, the mitochondrial DNA (mtDNA) and the non-recombining portion of the Y-chromosome (NRY), to address dog demography. Through 582 bps of mtDNA Control Region, complemented with whole mitochondrial genomes, it was established that almost all maternal lineages of the domestic dog worldwide coalesce to a population of at least 51 and perhaps many more female wolves in Asia South of Yangtze River (ASY) approximately 16,000 years before present (BP). This was based on the presence of a maximal diversity in this area, a descending gradient of diversity outward it, and a ubiquitous population structure everywhere in the world. A closer examination of this portrait in Southwest Asia (SwAsia) and the Fertile Crescent (FC), a region which has supplied persuasive evidence on early presence of the domestic dog, retrieved the same information, with implications for backbreeding with the local wolf population. Meanwhile, analyses of mtDNA dispersal showed that dogs took the long way via land to Madagascar Island, and not together with humans via sea. By the other approach, the NRY data in 14,437 bps length supplemented the mtDNA in reporting the height of diversity from ASY with a founding population of at least 13 male wolves, but expectably produced lower inter-regional differentiation by diversity. Screening of NRY by a SNP assay in the dingoes of Australia Island as a population of feral dogs revealed restricted and similar dispersal patterns for sires and dams. Prospects of ancient, multilocus and whole genome assays with the emerging high-throughput technologies has still more to promise on finer elaborations of these issues."

QC 20120529

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Fakhfakh, Ismail. "Modeling and diagnosis of dynamic process from timed observations : application to hydraulic dam." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4363/document.

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Cette thèse concerne le diagnostic de processus dynamiques basée sur la Théorie des Observations Datées, une théorie mathématique conçue pour la modélisation et le raisonnement à partir de données datées. Les contributions présentées dans ce mémoire sont 1) une extension de la méthodologie d'ingénierie des connaissances TOM4D (Timed Observation Modeling for Diagnosis) aux réseaux de processus dynamiques, 2) l'algorithme temps réel et any-time TOM4E (Timed Observation Management for Explanation) qui utilise les modèles TOM4D pour diagnostiquer les comportements dans un réseau de processus dynamiques à partir de données datées et 3) l'application de TOM4D et TOM4E au diagnostic du barrage hydraulique des Sapins (France), un problème particulièrement difficile. TOM4D est une approche de diagnostic à partir de multiples modèles dirigée par la syntaxe ou l'introduction de la sémantique est contrôlée par la Combinaison de l'approche conceptuelle de CommonKADS au tétraèdre des états de la physique newtonienne. Les fonctions Detect, Describe et Explain de TOM4E utilisent les modèles d'observation déduit des modèles de comportement de TOM4D pour identifier les comportements potentiels des processus. Pour des raisons de simplicité, la présentation de TOM4D et de TOM4E est effectuée à l'aide d'un exemple didactique tirée de la littérature spécialisée dans le domaine du diagnostic. L'application au diagnostic du barrage des Sapins démontre l'intérêt de l'approche : leur usage aurait permis d'identifier le premier problème huit ans avant sa quasi-destruction, la présence d'eau étant mise en évidence sept ans avant
This thesis proposes a diagnosis approach of dynamic process based on the Timed Observation Theory, a mathematical framework for modeling and reasoning about dynamic process from timed data. The contributions of this works are i) an extension of the TOM4D (Timed Observation Modeling for Diagnosis) Knowledge Engineering methodology to networks of dynamic processes, ii) a real-time and any-time diagnosis algorithm called TOM4E (Timed Observation Management for Explanation) that uses the TOM4D models to diagnose behaviors in a network of dynamic processes and iii) the application of TOM4D and TOM4E to the diagnosis of the French Sapin's hydraulic dam, a particularly difficult real-world diagnosis problem. TOM4D is a is a primarily syntax-driven approach of Multi-Model Based Diagnosis where semantic content is introduced in a gradual and controlled way through the combination of the CommonKADS conceptual approach and the Tetrahedron of States of Newton's physical laws.TOM4E algorithm is based on the Detect, Describe and Explain functions which uses observation models translated from the TOM4D behavioral models. For simplicity reasons, the presentation of TOM4D and TOM4E is made with a unique didactic example provided from the literature of the diagnosis domain. The example of Sapin's dam makes the demonstration of the interest of the proposed approach: using them, the first Sapin's dam problem would have been identified eight years before its quasi-failure, and the presence of water being highlighted seven years before

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Schablowski-Trautmann, Matthias. "Konzept zur Analyse der Lokomotion auf dem Laufband bei inkompletter Querschnittlähmung mit Verfahren der nichtlinearen Dynamik." Karlsruhe : Univ.-Verl. Karlsruhe, 2005. http://deposit.d-nb.de/cgi-bin/dokserv?idn=978770773.

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Dissertations / Theses on the topic 'DOM dynamic'

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