Dissolved organic matter (DOM) is one of the largest carbon reservoirs on this planet and is present in aquatic environments as a highly complex mixture of organic compounds. The Florida coastal Everglades (FCE) is one of the largest wetlands in the world. DOM in this system is an important biogeochemical component as most of the nitrogen (N) and phosphorous (P) are in organic forms. Achieving a better understanding of DOM dynamics in large coastal wetlands is critical, and a particularly important issue in the context of Everglades restoration. In this work, the environmental dynamics of surface water DOM on spatial and temporal scales was investigated. In addition, photo- and bio-reactivity of this DOM was determined, surface-to-groundwater exchange of DOM was investigated, and the size distribution of freshwater DOM in Everglades was assessed. The data show that DOM dynamics in this ecosystem are controlled by both hydrological and ecological drivers and are clearly different on spatial scales and variable seasonally. The DOM reactivity data, modeled with a multi-pool first order degradation kinetics model, found that fluorescent DOM in FCE is generally photo-reactive and bio-refractory. Yet the sequential degradation proved a “priming effect” of sunlight on the bacterial uptake and reworking of this subtropical wetland DOM. Interestingly, specific PARAFAC components were found to have different photo- and bio-degradation rates, suggesting a highly heterogeneous nature of fluorophores associated with the DOM. Surface-to-groundwater exchange of DOM was observed in different regions of the system, and compositional differences were associated with source and photo-reactivity. Lastly, the high degree of heterogeneity of DOM associated fluorophores suggested based on the degradation studies was confirmed through the EEM-PARAFAC analysis of DOM along a molecular size continuum, suggesting that the fluorescence characteristics of DOM are highly controlled by different size fractions and as such can exhibit significant differences in reactivity.

Orientador: Antonio Jose Ramirez Londono / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica / Made available in DSpace on 2018-08-26T15:15:59Z (GMT). No. of bitstreams: 1 Faria_GuilhermeAbreu_M.pdf: 7344692 bytes, checksum: e531c95d64110532e988972471c0e25d (MD5) Previous issue date: 2014 / Resumo: O objetivo deste trabalho foi desenvolver a metodologia de medição e análise de dados para a instalação experimental XTMS. Esta instalação foi projetada para possibilitar a medição simultânea de difração de raios X e informações térmicas e mecânicas de materiais enquanto estes são submetidas a condições termomecânicas controladas. Esta é uma área de grande interesse para cientistas de materiais uma vez que uma vasta gama de propriedades termomecânicas têm suas origens em propriedades microscópicas que são acessíveis através de dados de difração. Durante o trabalho, foram estudadas estratégias de medição, desenhos de amostras, métodos de processamento e análise de dados, assim como foi feita a caracterização da instalação como equipamento de medida de dados de difração. Como parte do trabalho, a instalação foi aplicada no estudo de casos científicos de interesse, que envolvem tanto diferentes metodologias de ensaios quanto dados de difração que exigem diferentes metodologias de análise. Os estudos consistiram em um ensaio de deformação em uma liga com memória de forma, ensaios de decomposição isotérmica em um aço inoxidável Superduplex UNS-S32750, e um ensaio de dilatometria acompanhado por difração do aço supermartensítico SuperCr13 / Abstract: The aim of this work was to develop measurement and data analysis methodologies for the XTMS experimental installation. This facility was engineered to simultaneously collect X-ray diffraction and thermo-mechanical information of materials as they are subjected to controlled thermo-mechanical conditions. This is an area of great interest for material scientists given the wide range of thermo-mechanical properties correlated with microscopic properties which are accessible through X-ray diffraction. Developments performed during this work include the development and/or study of measurement strategies, sample designs, and data processing and analysis, as well as the characterization of the XTMS installation as an X-ray diffraction station. As part of the work, the installation was used to study several cases of scientific interest, involving different testing and data analysis methodologies. The studies performed were the deformation of a shape memory alloy, the isothermal ferrite decomposition on a Superduplex stainless steel UNS-S32750, and phase transformations on a SuperCr13 supermartensitic steel through dilatometry coupled with time resolved X-ray diffraction / Mestrado / Materiais e Processos de Fabricação / Mestre em Engenharia Mecânica

Orientador: Mário Noboru Tamashiro / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Física Gleb Wataghin / Made available in DSpace on 2018-08-31T00:17:06Z (GMT). No. of bitstreams: 1 Ercule_Adinei_M.pdf: 1649654 bytes, checksum: a32bd621f02831c6f06d0618847ad1a9 (MD5) Previous issue date: 2016 / Resumo: Estudamos através da solução do modelo de Blume¿Emery¿Griffiths na rede de Bethe, o efeito da coordenação da rede no comportamento multicrítico do modelo ferromagnético (J > 0) na região de acoplamentos biquadráticos repulsivos, analisando o caso particular K/J = ?3,5. O estudo foi feito para duas coordenações diferentes (z = 4, 6) e a campo nulo (H = 0). Durante a análise do mapeamento surgiram órbitas de período 2 e por esse motivo foi feita uma divisão da rede em duas sub-redes interpenetrantes. Nesta região o diagrama de fases apresentou quatro fases termodinâmicas distintas: paramagnética, ferromagnética, quadrupolar alternada (ou antiquadrupolar) e ferrimagnética. Além disso, o diagrama de fases apresentou regiões de coestabilidade numérica que foram investigadas pelo cálculo da energia livre. A expressão analítica da energia livre foi obtida através do engenhoso método de Gujrati. Para a coordenação z = 4 a transição entre as fases ferrimagnética e quadrupolar alternada é sempre contínua, enquanto a transição das fases ferromagnética e ferrimagnética é descontínua a baixas temperaturas, tornando-se contínua para temperaturas acima do ponto tricrítico. Por outro lado, para a coordenação z = 6 a transição entre as fases ferromagnética e ferrimagnética é sempre contínua. No entanto, a transição entre as fases ferrimagnética e quadrupolar alternada é descontínua para temperaturas abaixo do ponto tricrítico e contínua para temperaturas maiores, em concordância com os diagramas de fases obtidos na aproximação de campo médio / Abstract: We studied through the solution of the Blume¿Emery¿Griffiths model on the Bethe lattice, the effect of the lattice coordination on the multicritical behavior of the ferromagnetic model (J > 0) in the region of repulsive biquadratic couplings, analyzing the particular case K/J = ?3,5. The study was performed for two different lattice coordinations (z = 4, 6) and zero magnetic field (H = 0). During the mapping analysis, 2-cicle orbits arose and therefore a division of the lattice into two interpenetrating sublattices was implemented. In this region the phase diagram displayed four distinct thermodynamic phases: paramagnetic, ferromagnetic, staggered quadrupolar and ferrimagnetic. In addition, the phase diagram displayed regions of numerical co-stability, that were investigated by calculating the free energy. The analytical free-energy expression was obtained by the inventive Gujrati¿s method. For coordination z = 4 the transition between the ferrimagnetic and the stag- gered quadrupolar phases is always continuous, while the transition of the ferromagnetic and ferrimagnetic phases is discontinuous at low temperatures, turning into continuous for temperatures above the tricritical point. On the other hand, for coordination z = 6 the transition between the ferromagnetic and the ferrimagnetic phases is always continuous. However, the transition between the ferrimagnetic and the staggered quadrupolar phases is discontinuous for temperatures below the tricritical point and continuous for higher temperatures, in agreement with the phase diagrams obtained in the mean-field approximation / Mestrado / Física / Mestre em Física / 132988/2014-3 / CNPQ

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-01-13T10:09:17Z No. of bitstreams: 1 ronaldoantoniodesouza.pdf: 881868 bytes, checksum: e59487612dfa1da7554111a1a8e719d4 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-01-25T17:26:30Z (GMT) No. of bitstreams: 1 ronaldoantoniodesouza.pdf: 881868 bytes, checksum: e59487612dfa1da7554111a1a8e719d4 (MD5) / Made available in DSpace on 2016-01-25T17:26:30Z (GMT). No. of bitstreams: 1 ronaldoantoniodesouza.pdf: 881868 bytes, checksum: e59487612dfa1da7554111a1a8e719d4 (MD5) Previous issue date: 2015-11-22 / A presente dissertação visa compreender uma série de processos implicados na construção da pessoa maxakali, assim como aqueles que podem provocar transformações nessa pessoa. Para isso, foi realizada uma pesquisa bibliográfica priorizando particularmente as etnografias produzidas nas últimas duas décadas; os principais elementos destacados neste trabalho são a relevância dos rituais para a construção da pessoa maxakali e os cantos entoados pelos e com os espíritos yãmĩy durante esses rituais. A realização destes cantos produz as condições necessárias à vida e também garante, junto com certas regras de conduta frente aos mesmos espíritos, o destino post-mortem como yãmĩy. E, a análise sobre as transformações na condição da pessoa maxakali nos leva, ao final deste trabalho, a afirmar a centralidade da noção de alegria, com os estados saudável e alegre confundindo-se num só estado desejado, que define propriamente o que é ser maxakali. É nesse sentido, que a presente dissertação defende a existência de três aspectos fundamentais para a vida maxakali, sendo eles, o respeito aos resguardos; a frequência aos ritos e, consequentemente, as trocas efetuadas nessas ocasiões; além da manutenção do mencionado estado de alegria. A manutenção desses aspectos define a condição maxakali. / The present dissertation aims to understand a series of processes involved in the construction of the Maxakali person. To this, a bibliographical research accomplished prioritizing, particularly, the ethnographies produced over the last two decades. The key elements highlighted in this paper are the relevance of the rituals to construction of the Maxakali person and the songs chanted by and with yãmĩy spirits during rituals these rituals. The achievement of these songs produces the necessary conditions to life. It also ensures, with certain code of conduct face the same spirits, the post-mortem destiny as yãmĩy. The analysis of the transformations in the condition of the maxakali person lead us, by the end of this research, to assert that the central notion of joy – with the confused healthy and cheerful conditions in a unique desire state –, that defines exactly what means to be maxakali. It is in this sense that this dissertation supports the existence of three fundamental aspects of maxakali life: the respect of couvades practices; the presence in the rituals and, consequently, the exchanges made on these occasions; besides the maintenance of mentioned estate of joy. The perpetuation of these aspects defines maxakali condition.

The purpose of this thesis is to study the effects of hyperbolic transformations on the cubic that is determined by locus of centroids of the equilateral triangles in H² whose base coincides with the line y=0, and whose common vertex is at the origin. The derivation of the formulas within this work are based on the Poincaré disk model of H², where H² is understood to mean the hyperbolic plane. The thesis explores the properties of both the untransformed cubic (the original locus of centroids) and the transformed cubic (the original cubic taken under a linear fractional transformation).

<p>Predmet istraživanja u disertaciji je analiza uticaja investicija na<br />transformaciju i poslovne aktivnosti preduzeća sa posebnim akcentom na<br />istraživanje performansi primene modela investiranja, a u funkciji efektivnog i<br />efikasnog procesa transformacije preduzeća.<br />Op&scaron;ti cilj je utvrđivanje performansi investicija, odnosno uticaja investicija na<br />tok i efekte transformacije i poslovne aktivnosti preduzeća u Republici Srbiji.<br />Rezultat istraživanja je da su strane direktne investicije u države regiona od<br />zanemarljivog indirektnog značaja za berzu Republike Srbije, a samim tim i<br />za ekonomski rast Republike Srbije.</p> / <p>The subject of research in the dissertation is the analysis of the impact of investments<br />on transformation and business activities of the company with special emphasis on the<br />research of the performance of the application of the investment model, as a function<br />of effective and efficient process of transformation of the company.<br />The overall objective is to determine the performance of investments, that is, the<br />impact of investments on the flow and effects of transformation and business activities<br />of companies in the Republic of Serbia.<br />The result of the research is that foreign direct investments in the countries of the<br />region are of negligible indirect importance for the stock exchange of the Republic of<br />Serbia, and therefore for the economic growth of the Republic of Serbia.</p>

Given the increasing emphasis on multi-perspective modelling, the University of Pretoria’s Industrial Engineering Department requires a tool that enables horizontal transformation between DEMO (Design and Engineering Methodology for Organisations) models and other models. This tool needs to be available free-of-charge, up-to-date, and vertically consistent, and should enable horizontal transformation between DEMO models and other models such as the BPMN (Business Process Model and Notation) models. Using design science research, this dissertation develops a part of this tool by first identifying and evaluating currently available tools, then discovering how other authors have approached model consistency and transformation, and finally developing a tool in ADOxx that supports the modelling of DEMO’s construction model– more specifically, the organisation construction diagram (OCD) and transaction product table (TPT) and transformations from the OCD to BPMN collaboration diagrams. The new tool, called DMT (Demo Modelling Tool), is demonstrated by modelling two case studies within the tool, and then performing four transformations. It is evaluated by having postgraduate participants model the same case study and rate the tool using pre-established usability criteria. / Dissertation (MEng)--University of Pretoria, 2020. / Industrial and Systems Engineering / MEng / Unrestricted

The diploma thesis deals with the business combinations. The theoretical part is focused on individual types of business combinations and their legal, accounting and tax aspects. The analytical part contains practical examples of selected types of business combinations and their subsequent comparison. In the suggestion part, these specific business combinations are evaluated from a legal, accounting and especially tax point of view.

The diploma thesis deals with the companies’ transformation and the main focus is on the cross-border mergers and its tax implications. The theoretical part introduces the topic of companies’ transformation with focus on cross-border mergers and describes its legal, accounting and tax implications. The practical part contains of analysis of cross-border mergers made by Czech companies from 2008 to 2020. The goal of the analysis is to find out where to Czech companies make cross-border mergers most often. Then for the selected countries the tax systems and mainly the corporate income tax is described. Afterwards, with a model example, the most convenient country for cross-border merger from the tax and corporate income tax perspective is selected.

The program MANDO efficiently performs computations involving pairs of operators, a single operator, and operators applied to functions, saving time and cost over pencil-·and-paper methods. A versatile but compact data structure, defined under SPIT-BOL's facility for creation of datatypes, contains the operators (and functions) and provides a means for systematically referencing their relevant parts. On input, functions and operators are written in a restricted but natural string format, for which the program can readily convert them to the internal data structure. Central to the method of operation of the derivative routine is its ability to differentiate a function written as a string. This allows for a certain compactness in the internal form. To counteract the relative slowness of string processing in the derivative routine, the program keeps a table of derivatives repeated during the processing . The table is checked for the presence of the function and its derivative before the derivative sequence is applied. Some simplification is performed. The simplification relies on the ordering sequence, followed by a sequence which cancels or combines terms that are alike, except, in general, for numerical multipliers.