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Dykes, Keith Aubrey. "A design study of a marine diamond mining machine." Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368952.
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Cui, Shiyong [Verfasser]. "Spatial and temporal SAR image information mining / Shiyong Cui." Siegen : Universitätsbibliothek der Universität Siegen, 2014. http://d-nb.info/1058733648/34.
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Deakin, Mark J. W. "Integration of core and log data for petrophysical analysis of Brae conglomerates, North Sea." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/7475.
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Bevan, J. "Secondary porosity generation in sandstone reservoirs : Feldspar dissolution in the Tartan Field, North Sea." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235362.
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Muñoz-Royo, Carlos. "Deep-sea mining : dewatering plumes, vortex-induced vibrations and economic modelling." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119097.
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Thesis: S.M. in Ocean Engineering, Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.Cataloged from PDF version of thesis. Pages 109 and 110 blank.
Includes bibliographical references (pages 99-108).
Deep-sea mining activities are expected to commence in the next decade; the International Seabed Authority (ISA) has already issued twenty nine exploration licenses for polymetallic nodules, polymetallic sulphides and polymetallic crusts. The ISA is seeking to approve the exploitation regulations for polymetallic nodules in the next two years, but there are significant research and knowledge gaps that still have to be explored. The discharge of dewatering plumes, the analysis of the effect of vortex-induced vibrations (VIV) on mining risers, and the development of updated and detailed economic models -which are among the most pressing ones - are addressed in this thesis. PLUMEX field studies were conducted in the Pacific Ocean to create and monitor six dewatering plumes. The data obtained from the experiments will be used to validate analytic and numeric plume models that will help to assess the environmental impacts. Additionally, a preliminary VIV analysis of a simple riser configuration was conducted to show the significant impact of VIV on the fatigue life. The results showed that the fatigue life could be reduced to less than one year. Lastly, an independent and thorough economic model is being developed at MIT to allow the simulation of different scenarios and forecast the economic result of a polymetallic nodule exploitation. The ISA will consider the results from the model to determine the royalties and fees that will be paid by future contractors in order to share their benefit with the humankind.
by Carlos Muñoz-Royo.
S.M. in Ocean Engineering
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Webb, Samuel J. "Interpretation and mining of statistical machine learning (Q)SAR models for toxicity prediction." Thesis, University of Surrey, 2015. http://epubs.surrey.ac.uk/807269/.
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Structure Activity Relationship (SAR) modelling capitalises on techniques developed within the computer science community, particularly in the fields of machine learning and data mining. These machine learning approaches are often developed for the optimisation of model accuracy which can come at the expense of the interpretation of the prediction. Highly predictive models should be the goal of any modeller, however, the intended users of the model and all factors relating to usage of the model should be considered. One such aspect is the clarity, understanding and explanation for the prediction. In some cases black box models which do not provide an interpretation can be disregarded regardless of their predictive accuracy. In this thesis the problem of model interpretation has been tackled in the context of models to predict toxicity of drug like molecules. Firstly a novel algorithm has been developed for the interpretation of binary classification models where the endpoint meets defined criteria: activity is caused by the presence of a feature and inactivity by the lack of an activating feature or the deactivation of all such activating features. This algorithm has been shown to provide a meaningful interpretation of the model’s cause(s) of both active and inactive predictions for two toxicological endpoints: mutagenicity and skin irritation. The algorithm shows benefits over other interpretation algorithms in its ability to not only identify the causes of activity mapped to fragments and physicochemical descriptors but also in its ability to account for combinatorial effects of the descriptors. The interpretation is presented to the user in the form of the impact of features and can be visualised as a concise summary or in a hierarchical network detailing the full elucidation of the models behaviour for a particular query compound. The interpretation output has been capitalised on and incorporated into a knowledge mining strategy. The knowledge mining is able to extract the learned structure activity relationship trends from a model such as a Random Forest, decision tree, k Nearest Neighbour or support vector machine. These trends can be presented to the user focused around the feature responsible for the assessment such as ACTIVATING or DEACTIVATING. Supporting examples are provided along with an estimation of the models predictive performance for a given SAR trend. Both the interpretation and knowledge mining has been applied to models built for the prediction of Ames mutagenicity and skin irritation. The performance of the developed models is strong and comparable to both academic and commercial predictors for these two toxicological activities.
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Di, Orio Giovanni. "Adapter module for self-learning production systems." Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10402.
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Dissertação para obtenção do Grau de Mestre em
Engenharia Electrotécnica, Sistemas e ComputadoresThe dissertation presents the work done under the scope of the NP7 Self-Learning project regarding the design and development of the Adapter component as a foundation for the Self-Learning Production Systems (SLPS). This component is responsible to confer additional proprieties to production systems such as lifecycle learning, optimization of process parameters and, above all, adaptation to different production contexts. Therefore, the SLPS will be an evolvable system capable to self-adapt and learn in response to dynamic contextual changes in manufacturing production process in which it operates. The key assumption is that a deeper use of data mining and machine learning techniques to process the huge amount of data generated during the production activities will allow adaptation and enhancement of control and other manufacturing production activities such as energy use optimization and maintenance. In this scenario, the SLPS Adapter acts as a doer and is responsible for dynamically adapting the manufacturing production system parameters according to changing manufacturing production contexts and, most important, according to the history of the manufacturing production process acquired during SLPS run time.To do this, a Learning Module has been also developed and embedded into the SLPS Adapter. The SLPS Learning Module represents the processing unit of the SLPS Adapter and is responsible to deliver Self-learning capabilities relying on data mining and operator’s feedback to up-date the execution of adaptation and context extraction at run time. The designed and implemented SLPS Adapter architecture is assessed and validated into several application scenario provided by three industrial partners to assure industrial relevant self-learning production systems. Experimental results derived by the application of the SLPS prototype into real industrial environment are also presented.
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Chan, Francis. "Knowledge management in Naval Sea Systems Command : a structure for performance driven knowledge management initiative." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02sep%5FChan.pdf.
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Thesis (M.S. in Product Development)--Naval Postgraduate School, September 2002.Thesis advisor(s): Mark E. Nissen, Donald H. Steinbrecher. Includes bibliographical references (p. 113-117). Also available online.
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Garnica, Pérez Denisse Fabiola. "Pronóstico a Corto Plazo de Afluencia de Pasajeros Utilizando Técnicas de Data Mining: Metro S.A." Tesis, Universidad de Chile, 2011. http://www.repositorio.uchile.cl/handle/2250/102546.
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Melo, Junior Mauricio Alves de 1981. "Híbridos inorgânico-orgânicos lamelares e mesoporosos aplicados na sorção de metais tóxicos e otimização de processos de mineração." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250075.
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Orientador: Claudio AiroldiTese (doutorado) - Universidade Estadual de Campinas, Instituto de Química
Made available in DSpace on 2018-08-23T02:01:02Z (GMT). No. of bitstreams: 1 MeloJunior_MauricioAlvesde_D.pdf: 8850225 bytes, checksum: 8531789c5f9acab757429aa59582c7d6 (MD5) Previous issue date: 2013
Resumo: Foram sintetizadas sílicas mesoporosas híbridas a partir da funcionalização da SBA-15 e filossilicatos de cobalto e níquel com macrociclos orgânicos contendo sítios básicos para a sorção dos íons metálicos tóxicos Pb, Cd e Cu. A SBA-15 e o filossilicatos de magnésio também foram modificados com cadeias orgânicas contendo diferentes quantidades de átomos de enxofre para serem aplicados na sorção de íons complexos de ouro e de metais do grupo da platina com o intuito de otimizar as condições adotadas para a extração destes metais preciosos de seus minérios. Os materiais contendo macrociclos orgânicos foram formados a partir de sucessivas reações nas superfícies com diferentes moléculas orgânicas para conter os centros básicos nitrogênio, oxigênio e enxofre. As técnicas de caracterização confirmaram as formações das estruturas mesoporosas e lamelares, mostrando a presença de cadeias orgânicas pendentes contendo os grupos funcionais de interesse. Os híbridos funcionalizados com macrociclos apresentaram-se efetivos nas sorções dos metais tóxicos, com alta capacidade para o íon Pb quando estão funcionalizados com macrociclos contendo enxofre. Enquanto que, no geral, as capacidades de sorção de todos os materiais tornaram-se maiores com o aumento das quantidades de centros básicos. Estas capacidades de sorção ainda sofrem um aumento após a formação dos macrociclos. As sorções dos complexos de metais preciosos foram efetivas em todos os casos, com destaque para tetracloroaurato e tetracloropaladato, que apresentaram altos valores de sorção. Ótimos valores também foram obtidos na sorção do complexo aurotiossulfato com o filossilicato de magnésio funcionalizado com grupos tiol. As titulações calorimétricas dos metais tóxicos com as matrizes contendo macrociclos orgânicos indicaram processos favoráveis de interação dos sítios básicos com os cátions em solução aquosa, devido a valores negativos de energia de Gibbs, em um processo espontâneo, e valores positivos de entropia. Os valores de entalpia mostram que todas as interações metais/centros básicos na interface sólido/líquido são exotérmicas
Abstract: This thesis reports the syntheses of hybrid mesoporous sílicas, through the functionalization of SBA-15, and cobalt and nickel phyllosilicates functionalized with organic macrocycles containing basic sites for the sorption of the toxic metallic ions Pb, Cd and Cu. SBA-15 and magnesium phyllosilicates were also modified with organic chains containing different amounts of sulfur atoms to be applied to the sorption of complex ions of gold and platinum group metals. This is done in the aim of optimizing the conditions adopted in the extraction of these precious metals from their ores. The materials with pendant organic macrocycles were formed through successive reactions on the surfaces with different organic molecules possessing nitrogen, oxygen and sulfur basic centers. The characterization techniques confirmed the formation of mesoporous and layered structures, showing the presence of pendant organic chains with the desired functional groups. The hybrids functionalized with macrocycles were effective in the sorption of toxic metals, with high sorption capacities for Pb when the solids are functionalized with macrocycles containing sulfur atoms. Whereas the sorption capacities of all materials were improved with the increase of basic centers amounts. These sorption capacities were even improved after the macrocycles formation. The sorption of precious metals complexes were effective in all cases, especially for tetrachloroaurate and tetrachloropalladate, which presented high sorption values. Exceptional values were also acquired in the sorption of aurothiosulfate complex by the magnesium phyllosilicate functionalized with thiol groups. The calorimetric titrations of toxic metals with the matrices containing organic macrocycles indicated favorable processes for the interaction between the basic centers and the cations in aqueous solution, due to negative values of Gibbs energy, in a spontaneous process. The results also indicated positive values of entropy. The values of enthalpy showed that all the metal/basic centers interactions at the solid/liquid interface are exothermic
Doutorado
Quimica Inorganica
Doutor em Ciências
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Diaz, Bustamante Gianlucas Wanderley, and Molero Cesar David Sotelo. "Optimización del avance lineal en las labores de exploración y desarrollo de la Unidad Minera Santa María - Compañía Minera Poderosa S.A. con la aplicación de los criterios fundamentales de la ingeniería de la voladura." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/629960.
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En la presente tesis se estudia la aplicación de los principios matemáticos de Holmberg y sus colaboradores. Dichos principios se encuentran descritos en el libro Rock blasting and explosives engineering que tiene como finalidad demostrar de manera práctica la importancia de realizar un adecuado diseño de la malla de perforación y voladura.
Esto se llevó acabo, en primer lugar, con el mapeo geomecánico (RMR), el análisis del arranque a utilizar, así como la longitud de barrenos y el explosivo óptimo para el cebo y la columna de carga. Esta investigación se realizó en la Unidad Minera Santa María de Compañía Minera Poderosa S.A., donde se demostró que el cambio de diámetro en los taladros de alivio del arranque de 38 mm a 64 mm y el uso adicional de barrenos de 8 pies para la sección de 2.5 m x 2.7 m, contribuye a ser eficientes en cada disparo. En esta misma instancia, se demostró que, aplicando de manera óptima los principios matemáticos utilizados se puede reducir notablemente la cantidad del uso de explosivos, viéndose reflejado en un ahorro económico por disparo.
Los resultados obtenidos con el nuevo diseño son: el factor de potencia pasó de 1.23 a 1.15 kg/t reduciendo un 6.8 %, el avance por disparo de 1.51 a 2.10 m aumentando un 39.2 % y el factor de carga lineal de 23.24 a 21.02 kg/m reduciendo un 9.6 %; lo cual se traduce en un ahorro mensual por frente de trabajo de S/. 21,421.12.This thesis explores the application of the mathematical principles of Holmberg and his collaborators.These principles are described in the book Rock blasting and explosives engineering which aims to demonstrate in a practical way the importance of proper drilling and blasting mesh design. This was completed, first of all, with geomechanical mapping (RMR), analysis of the start to be used, as well as the length of holes and the optimal explosive for the bait and the loading column. This research was carried out at the Santa María Mining Unit of Compañía Minera Poderosa S.A., where it was shown that the diameter change in the starter relief drills from 38 mm to 64 mm and the additional use of 8-foot holes for the 2.5 m x 2.7 m section, contributes to being efficient in every shot. In this same instance, it was demonstrated that, optimally applying the mathematical principles used the amount of explosives use can be significantly reduced, reflected in economic savings per shot. The results obtained with the new design are: the power factor went from 1.23 to 1.15 kg/t reducing a 6.8 %, the advance per shot from 1.51 to 2.10 m increasing a 39.2 % and the linear load factor from 23.24 to 21.02 kg/m reducing a 9.6 %; which translates into a monthly savings on the work front of S/. 21,421.12.
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Spash, Clive L. "The Politics of Researching Carbon Trading in Australia." WU Vienna University of Economics and Business, 2014. http://epub.wu.ac.at/4277/1/sre%2Ddisc%2D2014_03.pdf.
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This paper explores the conflicts of interest present in science policy and how claims being
made for evidence based science can be used to suppress critical social science research. The
specific case presented concerns the attempts to ban and censor my work criticising the
economics of carbon emissions trading while I was working for the Commonwealth
Scientific Industrial Research Organisation (CSIRO) in Australia. The role of management
and the Science Minister are documented through their own public statements. The case
raises general issues about the role of epistemic communities in the production of knowledge,
the potential for manipulation of information under the guise of quality control and the
problems created by claiming a fact-value dichotomy in the science-policy interface. The
implications go well beyond just climate change research and challenge how public policy is
being formulated in modern industrial societies where scientific knowledge and corporate
interests are closely intertwined. (author's abstract)Series: SRE - Discussion Papers
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Edstrom, Jonathon. "Embracing Visual Experience and Data Knowledge: Efficient Embedded Memory Design for Big Videos and Deep Learning." Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/31558.
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Energy efficient memory designs are becoming increasingly important, especially for applications related to mobile video technology and machine learning. The growing popularity of smart phones, tablets and other mobile devices has created an exponential demand for video applications in today’s society. When mobile devices display video, the embedded video memory within the device consumes a large amount of the total system power. This issue has created the need to introduce power-quality tradeoff techniques for enabling good quality video output, while simultaneously enabling power consumption reduction. Similarly, power efficiency issues have arisen within the area of machine learning, especially with applications requiring large and fast computation, such as neural networks. Using the accumulated data knowledge from various machine learning applications, there is now the potential to create more intelligent memory with the capability for optimized trade-off between energy efficiency, area overhead, and classification accuracy on the learning systems. In this dissertation, a review of recently completed works involving video and machine learning memories will be covered. Based on the collected results from a variety of different methods, including: subjective trials, discovered data-mining patterns, software simulations, and hardware power and performance tests, the presented memories provide novel ways to significantly enhance power efficiency for future memory devices. An overview of related works, especially the relevant state-of-the-art research, will be referenced for comparison in order to produce memory design methodologies that exhibit optimal quality, low implementation overhead, and maximum power efficiency.National Science Foundation
ND EPSCoR
Center for Computationally Assisted Science and Technology (CCAST)
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Booyens, Sarel Adriaan. "Compliance with the Codes of Good Practice and the Mining Charter by the South African mining industry : the role of the Department of Minerals and Energy / S.A. Booyens." Thesis, North-West University, 2008. http://hdl.handle.net/10394/2096.
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Mauro, Manuela. "Mining extraction in the ocean depths: a baseline to understand and reduce acoustic impact on biodiversity." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/144131.
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[ES] A lo largo de la historia, el hombre ha explotado los recursos minerales de la tierra para su supervivencia y desarrollo tecnológico sin un equilibrio con su regeneración. Dado el crecimiento de la población mundial y la reducción de recursos, el hombre comenzó a buscar nuevos depósitos que se encontraron en la década de 1960 en las profundidades de los océanos. Con estos, la humanidad empezò a pensar en extraer los minerales de estos depósitos y esto llevò al nacimiento de Deep Sea Mining (DSM). Las consecuencias de las actividades mineras en las profundidades del mar no se conocen realmente y los efectos pueden ser diferentes: contaminación acústica, contaminación lumínica, contaminación química, destrucción del hábitat, fragmentación del hábitat y pérdida de especies que son la base de muchos sistemas vitales. El impacto acústico de estas actividades puede tener importantes consecuencias en las especies marinas, aunque este es el tema más ignorado. El propósito de este proyecto de doctorado fue proporcionar una comprensión básica de los posibles impactos acústicos del DSM en la biodiversidad antes de que comiencen estas actividades. Para hacer esto, el proyecto de doctorado se organizó en varios pasos. Primero, durante un experimento indoor, se analizaron las respuestas bioquímicas en invertebrados sometidos a estrés acústico, Arbacia lixula y Mytilus galloprovincialis. Los resultados demostraron efectos significativos en la actividad de citotoxicidad, expresión de heat shock protein (HSPs) y actividades enzimáticas (esterasas, fosfatasas alcalinas, peroxidasas) en el líquido celomático de los erizos de mar sometidos a estrés acústico. También se observaron efectos significativos en el nivel de glucosa, la citotoxicidad y las actividades enzimáticas (esterasa, fosfatasa alcalina, peroxidasa) de la glándula digestiva del mejillón. En segundo lugar, se analizaron las respuestas bioquímicas de vertebrados e invertebrados sometidos in-situ a la emisión de watergun: Chromis chromis, Holothuria tubulosa y Arbacia lixula. Se encontraron efectos significativos sobre los niveles de cortisol en peces y las actividades enzimáticas (esterasas, fosfatasas alcalinas, peroxidasas y superoxide dismutasas) en membrana peristomial de erizo de mar. Además, las respuestas bioquímicas enzimáticas analizadas en los fluidos celómicos de los equinodermos fue significativa solo por A. lixula y solo en la activade peroxidasica. Tercero se estudiaron los cambios de comportamiento en las condiciones experimentales en juveniles de Sparus aurata sometidos a 4 frecuencias de emisión acústica diferentes. Este experimento demostró que solo las bajas frecuencias tuvieron efectos en todas las respuestas comportamental: altura de natación, motilidad y dispersión del grupo. Sobre la base de los datos de comportamiento obtenidos in vivo en peces jóvenes, se creó un modelo numérico para predecir los impactos de diferentes frecuencias de emisión acústica. Utilizando los resultados obtenidos y la bibliografía científica, se propuso un primer estándar técnico que es útil para la minería.[CAT] A lo llarc de l'historia, l'home ha explotat els recursos minerals de la terra per a la seua supervivencia i desenroll tecnologic sense un equilibri en la seua regeneracio. Donat el creiximent de la poblacio mundial i la reduccio de recursos, l'home escomençà a buscar nous deposits que se trobaren en la decada de 1960 en les fondaries dels oceans. En estos, l'humanitat empezò a pensar en extraure els minerals d'estos deposits i aço llevò al naiximent de Deep Sea Mining (DSM). Les conseqüencies de les activitats mineres en les fondaries del mar no se coneixen realment i els efectes poden ser diferents: contaminacio acustica, contaminacio lluminica, contaminacio quimica, destruccio de l'habitat, fragmentacio de l'habitat i perdua d'especies que son la base de molts sistemes vitals. L'impacte acustic d'estes activitats pot tindre importants conseqüencies en les especies marines, encara que este es el tema mes ignorat. El proposit d'este proyecte de doctorat fon proporcionar una comprensio basica dels possibles impactes acustics del DSM en la biodiversidad abans de que escomencen estes activitats. Per a fer aço, el proyecte de doctorat s'organisà en varis passos. Primer, durant un experiment indoor, s'analisaren les respostes bioquimiques en invertebrats somesos a estrés acustic, Arbacia lixula i Mytilus galloprovincialis. Els resultats demostraren efectes significatius en l'activitat de citotoxicidad, expressio d'heat shock protein (HSPS) i activitats enzimáticas (esterasa, fosfatasas alcalina, peroxidasas) en el liquit celomático dels capellanets de mar somesos a estrés acustic. Tambe s'observaren efectes significatius en el nivell de glucosa, la citotoxicidad i les activitats enzimáticas (esterasa, fosfatasa alcalina, peroxidasas) de la glandula digestiva de la clochina. En segon lloc, s'analisaren les respostes bioquimiques de vertebrats i invertebrats somesos in-situ a l'emissio de watergun: Chromis chromis, Holothuria tubulosa i Arbacia lixula. se trobaren efectes significatius sobre els nivells de cortisol en peixos i les activitats enzimáticas (esterasas, fosfatasas alcalines, peroxidasas y superoxide dimutases) en peristomes de capellanet de mar. Ademes, les respostes bioquimiques enzimáticas analisades en els decorreguts celómicos dels equinoderms fon significativa nomes per A. lixula i nomes en l'activade peroxidasica. Tercer s'estudiaren els canvis de comportament en les condicions experimentals en jovenils de Sparus aurata somesos a 4 freqüencies d'emissio acustica diferents. Este experiment demostrà que nomes les baixes freqüencies tingueren efectes en totes les respostes comportamental: alçada de natacio, motilidad i escampada del grup. Sobre la base de les senyes de comportament obtinguts in vivo en peixos jovens, se creó un model numeric per a predecir els impactes de diferents freqüencies d'emissio acustica. Utilisant els resultats obtinguts i la bibliografia cientifica, se propongue un primer estandart tecnic que es util per a la mineria.
[EN] Throughout history, man has exploited the earth's mineral resources for its survival and for technological development without regard for their regeneration. Given the growth of the world population and given the fall in resources, man started looking for new deposits, which were found in 1960s in the ocean depths. Humankind then began to consider extracting minerals from these deposits and this gave origin to Deep Sea Mining (DSM). The consequences of mining activities in the deep sea are not entirely known and the effects can be varied: noise pollution, light pollution, chemical pollution, habitat destruction, habitat fragmentation and the loss of species which we consider the basis of many life systems. The acoustic impact of these activities could have significant consequences on marine species; nevertheless, this has been the most overlooked issue to date. The aim of this PhD project was to provide baseline knowledge of possible acoustic impacts of DSM on biodiversity before mining begins. In order to do this, the PhD project was organised into 3 different stages. First, during an indoor experiment, the biochemical responses of invertebrates Arbacia lixula and Mytilus galloprovincialis subjected to acoustic stress were analysed. The results showed significant changes in cytotoxicity activity, expression of heat shock proteins (HSPs), and enzyme activities (esterases, alkaline phosphatases, peroxidases) in the coelomic fluid of sea urchins subjected to acoustic stress. Significant effects were also observed in glucose levels, cytotoxicity and enzyme activities (esterase, alkaline phosphatase, peroxidase) in the digestive gland of the mussel. Second, the biochemical responses of vertebrates and invertebrates subjected in-situ to watergun emission were analysed: Chromis chromis, Holothuria tubulosa and Arbacia lixula. Significant effects on fish cortisol levels and on enzyme activities in sea urchin peristomes were found. Furthermore, the enzyme biochemical responses analysed in the coelomic fluids of echinoderms showed significant effects only in A. lixula sea urchin and only in peroxidase activity. Third, behavioural changes in experimental conditions were studied in juveniles of Sparus aurata subjected to 4 different acoustic emission frequencies. This experiment showed that only low frequencies had effects on all the behavioural responses analysed: swimming height, motility and dispersion of the group. Based on behavioural data obtained in vivo on juvenile fish, a numerical model was created to predict the impacts of different acoustic emission frequencies. Using the results obtained and literature, a first technical standard useful for mining activities was drawn up.
The study of the Section 3.3 was supported by grants from MIUR (Ministry of Education, University and Research), Fondo Finalizzato alla Ricerca di Ateneo (FFR, 2018-2021) to M.V. and by the CNR research project: IMPLEMENTATION OF THE SOS CONVENTION - Offshore Platforms & Impacts between MATTM and CNR-DTA, (Capo Granitola, Campobello di Mazara) Work Package E: Indepth technical and scientific evaluation of the effects on marine ecosystems of airgun technologies and the effects of a watergun The study of the Section 3.4 study was conducted in the framework of the PhD program in Mediterranean Biodiversity XXXII cycle (International) of the University of Palermo. I. Perez-Arjona, M. Bou-Cabo and V. Espinosa acknowledge the financial support of the European Comission -project 11.0661/2018794607/SUB/ENV.C2. Risk-based Approaches to Good Environmental Status (RAGES). The other founding supports come from PhD Innovative with Industrial Characterization PON 2014-2020 and the projects CAIMAR Joint Laboratory Italy-Argentina (Laboratori Congiunti Bilaterali Internazionali of the Italian National Reseach Council, 2017-2019) and BOSS – Study of bioacoustics and applications for the sustainable exploitation of marine resources (Projects of major importance in the Scientific and Technological Collaboration Executive Programmes, funded by the Italian Ministry of Foreign Affairs and International Cooperation).
Mauro, M. (2020). Mining extraction in the ocean depths: a baseline to understand and reduce acoustic impact on biodiversity [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/144131
TESIS
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Zhang, Zhuo. "A planning approach to migrating domain-specific legacy systems into service oriented architecture." Thesis, De Montfort University, 2012. http://hdl.handle.net/2086/9020.
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The planning work prior to implementing an SOA migration project is very important for its success. Up to now, most of this kind of work has been manual work. An SOA migration planning approach based on intelligent information processing methods is addressed to semi-automate the manual work. This thesis will investigate the principle research question: 'How can we obtain SOA migration planning schemas (semi-) automatically instead of by traditional manual work in order to determine if legacy software systems should be migrated to SOA computation environment?'. The controlled experiment research method has been adopted for directing research throughout the whole thesis. Data mining methods are used to analyse SOA migration source and migration targets. The mined information will be the supplementation of traditional analysis results. Text similarity measurement methods are used to measure the matching relationship between migration sources and migration targets. It implements the quantitative analysis of matching relationships instead of common qualitative analysis. Concretely, an association rule and sequence pattern mining algorithms are proposed to analyse legacy assets and domain logics for establishing a Service model and a Component model. These two algorithms can mine all motifs with any min-support number without assuming any ordering. It is better than the existing algorithms for establishing Service models and Component models in SOA migration situations. Two matching strategies based on keyword level and superficial semantic levels are described, which can calculate the degree of similarity between legacy components and domain services effectively. Two decision-making methods based on similarity matrix and hybrid information are investigated, which are for creating SOA migration planning schemas. Finally a simple evaluation method is depicted. Two case studies on migrating e-learning legacy systems to SOA have been explored. The results show the proposed approach is encouraging and applicable. Therefore, the SOA migration planning schemas can be created semi-automatically instead of by traditional manual work by using data mining and text similarity measurement methods.
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Lilja, Leonela. "Leonela, Sara, Natalee och de tre Mariorna." Thesis, Kungl. Konsthögskolan, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kkh:diva-98.
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1987 i Medellin, föder Maria ett barn, hon vill ge henne namnet Natalee, men efter att hon lämnat barnet till adoption ger någon annan henne istället namnet Leonela. Leonela bor 6 månader hos en fostermamma som också heter Maria, sedan adopteras hon till Sverige av Marie och Janne och får namnet Sara. Utan kronologi, blandas fragmenterade minnen och upplevelser. Essän ställer frågor så som vad namngivning gör med utformningen av ett jag och vad fysisk likhet spelar för roll i känslan av tillhörighet.
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Buontempo, Frances Vivien. "Rapid toxicity prediction of organic chemicals using data mining techniques and SAR based on genetic programming for decision tree generation." Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416813.
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Paul, Sophie Anna Luise [Verfasser], Andrea [Akademischer Betreuer] Koschinsky, Andrea [Gutachter] Koschinsky, Michael [Gutachter] Bau, Sabine [Gutachter] Kasten, and Thomas [Gutachter] Kuhn. "Biogeochemistry of Pacific deep-sea sediments and potential impacts of deep-sea polymetallic nodule mining / Sophie Anna Luise Paul ; Gutachter: Andrea Koschinsky, Michael Bau, Sabine Kasten, Thomas Kuhn ; Betreuer: Andrea Koschinsky." Bremen : IRC-Library, Information Resource Center der Jacobs University Bremen, 2019. http://d-nb.info/1190888157/34.
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Booyens, Sarel Adriaan. "The scorecard for the broad-based socio-economic empowerment charter for the South African mining industry : a performance measuring instrument / S.A. Booyens." Thesis, North-West University, 2006. http://hdl.handle.net/10394/1036.
Full textAbstract:
The South African economy is largely supported by the mining industry. Even though
a large number of people are employed in the mining industry, a large portion of the
South African population was excluded from participating and benefiting from the
proceeds of mining due to historical racial discrimination.
It is a Government imperative to transform South Africa, including the mining
industry, and to achieve this, legislation was enacted and implemented, with various
Charters and Codes to provide guidance to the relevant industries.
However, it was essential to establish the context of black economic empowerment in
South Africa to understand the reasons behind the legislation implemented. Once
this was understood, the Mining Charter was investigated to determine its objectives
and targets and the application of the Scorecard was determined. This was achieved
by conducting literature studies to determine black economic empowerment in the
South African context and the applicable legislation.
Regarding the mining industry, the Mining Charter was adopted and this imposes
objectives and targets agreed upon between Government and the industry as well as
other role players. It also introduced the Scorecard to be used to determine whether
mining companies are achieving these objectives and targets.
The Scorecard is used as a measuring instrument and this study aims to determine
whether the Scorecard would be an effective measuring instrument for compliance
with the provisions of the Mining Charter.
As the Scorecard is used as a performance measuring instrument, the principles,
theories and models of performance had to be investigated to determine whether the
Scorecard complies with the theory. Therefore the literature study was extended to
cover performance management, measurement theories and models, and tools and
techniques were researched.
By conducting a number of interviews, it was determined how the Department of
Minerals and Energy and some mining companies utilise the Scorecard to determine
whether it is possible to use it as a performance measuring instrument.
Recommendations are made based on the comparison of the Scorecard with
performance management, measurement theories and findings resulting from the
empirical research conducted.Thesis (M. Development and Management)--North-West University, Potchefstroom Campus, 2006.
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De, la Cruz Ureta David Enrique, and Chepe Angel Arturo Mateo. "Implementación del programa de Seguridad Basada en el Comportamiento en la operación minera Antapaccay de la empresa San Martín Contratistas Generales S.A 2018." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/626425.
Full textAbstract:
El trabajo de investigación fue realizado en la operación minera Antapaccay de la empresa San Martin Contratistas Generales S.A durante el periodo 2018 - 2019, operación que identificó a los actos subestándares (Comportamientos inseguros) como causas principales de sus accidentes en los últimos años. Ante esta situación, la investigación buscó implementar el programa de Seguridad Basada en el Comportamiento con el propósito de prevenir y reducir los comportamientos inseguros de los trabajadores que podían generar eventos durante las actividades de trabajo de la empresa.
El trabajo comenzó por la sensibilización a todo el personal de la operación desde la alta dirección, la línea de mando y colaboradores, buscando la participación y formación de observadores para el programa. Luego, se realizó la definición de responsabilidades por cada personal involucrado en el programa (Jefe de Seguridad, investigadores, gerente del proyecto, jefes de área y observadores). Asimismo, se realizó la elaboración y personalización de la cartilla de observación basándose en la matriz de riesgos y en las causas de los accidentes de la empresa de los últimos años. Después, se procedió a la formación de observadores que participarían en el programa distribuidos en los dos turnos de la operación.
La presentación y difusión del programa se dio en la parada de seguridad con el apoyo de los colaboradores presentes. La recolección de las cartillas de observación fue llevada a cabo al término del día y después del proceso de intervención conductual. Estas cartillas fueron registradas y procesadas en la base de datos creados para elaborar un análisis de tendencias y plantear acciones correctivas inmediatas.
La investigación midió la variación del número comportamientos seguros frente a los comportamientos inseguros semanal y mensualmente, evidenciando que los programas de seguridad conductuales pueden aumentar los comportamientos seguros y son de gran complemento y apoyo en la búsqueda de controles operacionales y medidas correctivas de un sistema de gestión de seguridad minero.
Finalmente, se presentan las conclusiones y recomendaciones de acuerdo a los resultados expuestos.The research work was carried out in the Antapaccay mining operation of the company San Martin Contractors Generals S.A during the 2018 - 2019 period, an operation that identified substandard acts (unsafe behaviors) as the main causes of their accidents in recent years. Given this situation, the research sought to implement the Behavior Based Safety program with the purpose of preventing and reducing the unsafe behaviors of workers who could generate events during the company's work activities. The work began by raising awareness among all company staff from top management, the line of command and collaborators, seeking the participation and training of observers for the program. Then the definition of responsibilities was made by each personnel involved in the program (Chief of Security, researchers, project manager, area managers and observers). Likewise, the preparation and personalization of the observation card was carried out based on the critical risks and the causes of the accidents of the company in recent years. Afterwards, the observers who participated in the program, divided into two shifts of the operation, were trained. The presentation and diffusion of the program occurred at the security stop with the work of the present collaborators. The collection of information was carried out at the end of the day and after the process of behavioral intervention, the booklets were registered and processed in the database created to develop an analysis of trends and propose immediate corrective actions. The research measured the variation of safe behavior indexes versus unsafe behaviors on a daily, weekly and monthly basis, evidencing that behavioral safety programs can increase safe behaviors and are a great complement and support in the search for operational controls and corrective measures. Mining safety management system. Finally, the conclusions and recommendations are presented according to the results presented.
Tesis
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Sjödin, Jeanette. "Jag blir så nervös när jag ska skriva prov - en kvalitativ studie om provångest." Thesis, Halmstad University, School of Teacher Education (LUT), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1719.
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Syftet med uppsatsen är att få en djupare förståelse för hur fem elever som ligger högt på en provångestskala upplever och hanterar provsituationer. Metoden som användes var kvalitativ och utfördes i semistrukturerad intervjuform. Fem elever som läser i grundskolans senare år valdes ut genom flerstegsurval. Först gjordes ett tillgänglighetsurval och sedan subjektivt urval via en enkät som mäter provångest av Oostdam och Meijer (2003). De elever som hamnade i gruppen ”höga poäng” valdes ut för intervju.
Eleverna i studien finner provsituationer som obehagliga och förtränger att de ska ha prov. De blir ofta blockerade i en provsituation och får därmed problem med att återminnas relevant information. De har en låg tro på sin prestationsförmåga och ingen av eleverna har pratat med sina lärare om hur de känner i en provsituation. Vilka åtgärder som kan sättas in för att underlätta elevernas provskrivande varierade mellan informanterna. Dock framkom att tidsbegränsningen vid provskrivande har en negativ effekt på deras prestation. En annan vanlig åtgärd är att eleverna får lära sig hantera sina känslor i en provsituation.
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Rahn, Mirjam Christina Verfasser], P. A. [Akademischer Betreuer] Kukla, and Bernd G. [Akademischer Betreuer] [Lottermoser. "Deep-sea mining of seafloor massive sulfides and seafloor manganese nodules : deposit modelling and market potential / Mirjam Christina Rahn ; P. A. Kukla, Bernd Georg Lottermoser." Aachen : Universitätsbibliothek der RWTH Aachen, 2019. http://d-nb.info/1194067085/34.
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Pita, Joana Fonseca. "Acompanhamento técnico e controlo de qualidade de produção na Pedreira e na Serração da Empresa Plácido José Simões S.A." Master's thesis, Universidade de Évora, 2014. http://hdl.handle.net/10174/15007.
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No presente documento é feita a descrição dos trabalhos de extração e transformação de
mármore, bem como de todos os equipamentos e normas utilizadas neste processo, tendo sido
feito todo o acompanhamento técnico dos trabalhos executados.
Apresenta-se ainda o estudo de uma nova área de exploração com vista ao alargamento da
cavidade extrativa tendo como base as caraterísticas geológicas da região. Este estudo foi
complementado com a realização e análise de uma sondagem como meio de prospeção.
Finalmente são expostas as tarefas de controlo de produção associadas à aplicação da Marcação
CE; ABSTRACT:
Technical Monitoring and Production Quality Control in the Quarry and Sawmilling of Plácido
José Simões S.A. Company.
Marble extraction and transformation activities are described in this work. Equipment,
procedures and norms used in this dimension stone chain processing are also detailed. The
technical monitoring of the work performed in the Plácido Simões company quarry and
processing plant having also been done.
It is also presented the study of a new area of exploration aiming at extending the mining cavity
having as a basis the geological characteristics of the region. This study was complemented with
the making and analysis of a mining survey drilling as means of prospection.
Finally the production control tasks associated with the implementation of CE marking are
explained and described in detail.
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Xie, Chen. "Characterization of coupled body response in random sea." Texas A&M University, 2005. http://hdl.handle.net/1969.1/4871.
Full textAbstract:
The frequent use of two or more closely positioned vessels during offshore
operations makes the study of multi-body hydrodynamics an important topic, especially
for the design of deepwater offshore systems. This research investigation studies the
response behavior of a coupled mini-TLP / barge system in both head and beam sea
conditions. The design sea conditions were selected to represent the combined wind,
wave and current conditions for a target location off the coast of West Africa. Both the
mini-TLP and the barge were designed to have independent mooring systems. Coupling
between the two vessels is introduced through a connection consisting of two breast lines
and a fender system. This connection is designed to restrain the horizontal movements
of the two vessels while keeping a constant distance between them and avoiding
collisions.
The main focus of this study is to analyze the experimental data obtained during
the model testing, especially the motions of the two bodies and the values related to the
fender system, in order to characterize the behavior of the uncoupled and coupled system
configurations. A statistical approach is used for the data analysis and interpretation.
Statistical parameters are used to provide an overall characterization of system behavior,
and Gaussian and Weibull distribution functions are utilized to detect the importance of
non-linearity in the data with particular attention to extreme values. Correlations
between the two vessels in time domain and frequency domain are investigated. In
addition, auto and cross spectrum analyses of the data are used to contrast the motion
behavior of the uncoupled and coupled configurations. It is shown that the connection system reduces the horizontal vessel motions; however the forces exerted on the fender
system show significant variation depending on sea heading conditions.
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Schmidt, M. "Common heritage or common burden? : The United States position on the development of a regime for deep seabed mining in the Law of the Sea Convention." Thesis, University of Oxford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376001.
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Hillertz, Anna. "Att veta när man ska göra det man vet att man ska göra : om barn med ADHD, uppfattning av tid och att komma ihåg att göra det man har planerat." Thesis, Linköping University, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-4267.
Full textAbstract:
I den här studien undersöks om det är bristande tidsuppfattning som orsakar sämre prospektivt minne hos barn med diagnos ADHD. Studien syftar även till att utreda vad prospektivt minne har för relation till arbetsminne och exekutiva funktioner.
Studien har genomförts genom att två grupper, en grupp barn med diagnos ADHD och en kontrollgrupp, har utfört uppgifter som ger mått på prospektivt minne, tidsuppfattning, arbetsminne och exekutiva funktioner. Barnen i ADHD-gruppen har även deltagit i en intervju.
Resultaten visar att det inte finns någon skillnad i prestation på den prospektiva minnesuppgiften, men att barnen i ADHD-gruppen utvecklar en sämre strategi än barnen i kontrollgruppen för att klara uppgiften. Resultaten visar att barnen med ADHD presterar sämre än andra på tidsuppfattningsuppgiften, däremot visas ingen skillnad mellan grupperna i prestation på exekutiva funktioner eller arbetsminne. Det går inte med uppgifterna i den här studien att visa på några direkta samband mellan de olika undersökta funktionerna och prospektivt minne.
This study examines whether a lacking sense of time causes a negative effect on prospective memory in children with ADHD. In addition, the study investigates how prospective memory is related to working memory and executive functions.
The study explores two groups of children. One group consists of children diagnosed with ADHD and the other one is a control group. The two groups carried out tasks aimed at measuring prospective memory, sense of time, working memory, and executive functions. The children with ADHD also were interviewed.
The results yielded no difference between the groups in regards of the prospective memory assignment. However, the children in the ADHD group used a poorer strategy to solve the assigned task. The results further demonstrate that the children with ADHD presented a poorer outcome in the concept of time assignment. In contrast, there was no clear distinction between the groups in terms of executive functions and working memory. The study found no direct relationship between the examined functions and prospective memory.
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Cuba, Cárdenas Roddy Osnar. "Análisis comparativo entre los pernos cementados e hydrabolt en el sostenimiento para labores de 3*3 de sección en la Mina Azulcocha Mining S.A. Concepción – Junín 2017." Bachelor's thesis, Universidad Continental, 2017. http://repositorio.continental.edu.pe/handle/continental/3827.
Full textAbstract:
La presente tesis responde al problema ¿cuál es el resultado del análisis comparativo entre los pernos cementados e hydrabolt en el sostenimiento para labores de 3*3 m de sección en la mina Azulcocha de la compañía Azulcocha Mining S.A.?
Tiene como objetivo general determinar los resultados del análisis comparativo entre los pernos cementados e hydrabolt en el sostenimiento para labores de 3*3 m de sección en la mina Azulcocha de la compañía Azulcocha Mining S.A. También como hipótesis: influyen los resultados del análisis comparativo entre los pernos cementados e hydrabolt en el sostenimiento para labores perteneciente de 3*3 m de sección en la mina Azulcocha de la compañía Azulcocha Mining S.A.Tesis
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Noreña, Vasquez Erle Neptalí. "Estandarización del proceso de perforación y voladura en labores de exploración y desarrollo, mediante la aplicación de emulsiones y detonadores no eléctricos, en la Unidad Minera Santa Filomena de la Empresa Sotrami S.A." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/653131.
Full textAbstract:
El presente trabajo de investigación busca implementar una metodología de diseño de mallas de perforación y voladura en la empresa Minera Sotrami S.A, perteneciente al rubro de pequeña minería, con fines de estandarizarlo. La ejecución de dicha investigación se realiza mediante la utilización del algoritmo matemático de Holmberg que permite definir un modelo numérico para el diseño de una malla de perforación, y con la consideración de criterios operacionales encontrar una malla técnica que permita mejorar los rendimientos en las labores de exploración y desarrollo. Para el logro del mismo, se consideró como variable fija el tipo de roca (tipo III A) y las características geomecánicas presentes en ella; el diámetro del taladro de perforación como variable fija; y, el tipo de explosivo y accesorio de voladura como cambiantes, ya que se reemplazó la utilización de guías, mecha de seguridad y dinamita por el empleo de detonadores no eléctricos (Exaneles) y emulsiones encartuchadas. La oportuna y pertinente estandarización del proceso de perforación y voladura permitió obtener los siguientes resultados: el avance por disparo pasó a 1.62 m, el factor de carga se redujo a 13.46 kg/m y el factor de potencia disminuyo considerablemente.This research work seeks to implement a design methodology for drilling and blasting meshes in the company Minera Sotrami S.A, belonging to the small mining sector, with finality to standardize it. This research is carried out by using the Holmberg mathematical algorithm that allows defining a numerical model for the design of a drilling mesh, and with the consideration of operational criteria, finding a technical mesh that allow improving the performance of exploration and development labors. To achieve it, the type of rock (type III - A) and the geomechanical characteristics present in it were considered as a fixed variable; the diameter of the drill as a fixed variable; the type blasting attachment and explosives as changeable, since the use of guides, safety wick and dynamite was replaced with the use of non electric detonators (Exaneles) and encapsulated emulsions. The opportune and pertinent standardization of the drilling and blasting process allowed obtaining the following results: the advance per shot was to 1.62 m, the load factor was reduced to 13.46 kg/m and the power factor decreased considerably.
Tesis
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Siemer, Kyle W. "You've got that Sinking Feeling: Measuring Subsidence above Abandoned Underground Mines in Ohio, USA." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1372439025.
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Heinrich, Luise [Verfasser], Andrea [Akademischer Betreuer] Koschinsky, Andrea [Gutachter] Koschinsky, Stegen Karen [Gutachter] Smith, Till [Gutachter] Markus, and Hermann [Gutachter] Kudrass. "Interdisciplinary Assessment of Deep-Sea Mining Impacts: From Science to Policy and Implications for Sustainable Development / Luise Heinrich ; Gutachter: Andrea Koschinsky, Karen Smith Stegen, Till Markus, Hermann Kudrass ; Betreuer: Andrea Koschinsky." Bremen : IRC-Library, Information Resource Center der Jacobs University Bremen, 2021. http://d-nb.info/1238897975/34.
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Johnsson, Frank. "Att minröja eller inte minröja ... : en potentiell svaghet i USA:s offensiva bluewater förmåga vid etablerande av sea control i litorala havsområden." Thesis, Försvarshögskolan, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-1589.
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Minan är en av de mest kostnadseffektiva formerna av marin krigföring. Minor är små,billiga i anskaffning, kräver en liten grad av underhåll och kan läggas ut från i stort settvilken plattform som helst. Minor kan användas både i strategiskt, operativt och taktisktsyfte, i avsikt att begränsa en motståndare tillgång till specifika områden. Minor kan ocksåanvändas som försvar av specifika högvärdiga objekt, för att förändra militärgeografin ochförsvara hamnar, basområden m.m. Att möta och neutralisera minor kräver insats ochansträngning som ej står i proportion till motståndarens insats. Minans globala spridninginnebär att den representerar ett hot som inte skall underskattas, då man planerar ochgenomför operationer mot geografiska områden, vilka medger bruk av minan somvapensystem. Kampen om sjöförbindelser har varit, och är fortfarande, en central uppgift förmarina stridskrafter. Sedan minan introducerades i sjökriget har den skapat möjlighet attförneka en motståndare tillträde till havsområden. Som ett led i den eviga kampen mellanmedel och motmedel har minröjande enheter utvecklats för att säkerställa förmågan attetablera kontroll till sjöss (KTS). Denna uppsats fokuserar på U. S. Navy förmåga att hanterahotet från minor. Uppsatsen har en modern historisk ansats som grund, för att se om minorhar varit ett dimensionerande hot för U.S. Navy i kustnära farvatten, under perioden 1945 till2003. Uppsatsens avslutande diskussion ger perspektiv på de marina utmaningar som såvälen stormakt, som små kuststater har att hantera i framtiden. Kommer dessa två aktörer attnärma sig varandra, eller kommer de även fortsättningsvis att utvecklas i två riktningar.This essay focuses on the U.S. Navy’s former and future capability to counter thethreats of sea mines in coastal waters during sea control operations. The study isbased on a broad theoretical background. The theories I use to describe and analysethe theories and methods for warfare at sea described by Julian S Corbett in 1911.These theories forms the bias of this essay and are used to analyze the case study.The U.S. Navy has struggled with the difficult task of mine clearance operations forwell over 100 years. During August 1864 the defenders of Mobile, Alabama a portcity on the Gulf of Mexico used mines against the forces led by Rear AdmiralFarragut. These struggles have been marked by a propensity to react to current orpast mine threats in developing force structure and employment methodologies. Thisreactionary approach to mine countermeasures is identified in three recurring themes;the lack of a published doctrine, the failure to fully integrate mine countermeasureforces into the operating forces, and the fragmentary development of technologywithout the focusing element of a coherent doctrine to guide research anddevelopment efforts. These themes are recognizable in the changing minecountermeasures force structure that has resulted from the Navy's reaction to minethreats manifested in various conflicts. Naval mine countermeasures and procedureshave been historically reactionary and essentially unfocused in their evolution.Examples of these difficulties can be identified in the Wonsan harbor during theKorean War, the Gulf War, and in present day planning for expeditionary warfareemployment.Since the end of the Cold War the need for multinational cooperation has increasedwithin the framework of nations and alliances. This change has opened the door forcooperation between traditionally small coastal navies and blue water navies.
Avdelning: ALB - Slutet Mag 3 C-upps.Hylla: Upps. ChP 03-05
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Fuentes, Rivera Yon Nayrim, and Gomez Josemaria Brian Gargate. "Aplicación de los criterios fundamentales de la ingeniería de voladura para controlar la dilución en la explotación de vetas angostas en la Mina Sayapullo S.A." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/655358.
Full textAbstract:
El presente trabajo de investigación, comprende la implementación de un diseño de malla de perforación en base a los criterios fundamentales de la ingeniería de voladura para analizar y controlar la dilución del mineral en yacimientos de vetas angostas de una mina subterránea polimetálica en el Perú. Por tal motivo, primero es analizar la base de datos proporcionados por la empresa minera con respecto a las condiciones geológicas para la clasificación del macizo rocoso de la caja techo, caja piso y la veta con el objetivo de determinar la calidad de la roca. Por otro lado, se debe examinar las leyes de mineral, potencia de la veta y el porcentaje de dilución para posteriormente determinar la continuidad y grosor de la veta en un bloque determinado, así mismo, analizar la dilución en función a los criterios fundamentales de la ingeniería de voladura. Este criterio está profundamente arraigado a la geología, perforación, voladura, planeamiento y al proceso de explotación. En esta investigación, se analiza la aplicabilidad de un diseño de la ingeniería de voladura en vetas angostas de una mina subterránea empleado en un contexto peruano de vetas a través de la recolección y observación de datos, utilizando el sistema de clasificación geomecánica de macizo rocoso de Bieniawski, ponderación promedio de la potencia de la veta, dilución geológica y operativa de los tajeos. La generación de soluciones será bajo el enfoque de la fórmula de McCarthy, Software Datamine, JK Simblast y el análisis de resultados finales del comportamiento de la dilución obtenido serán comparados en relación con los iniciales.El presente trabajo de investigación, comprende la implementación de un diseño de malla de perforación en base a los criterios fundamentales de la ingeniería de voladura para analizar y controlar la dilución del mineral en yacimientos de vetas angostas de una mina subterránea polimetálica en el Perú. Por tal motivo, primero es analizar la base de datos proporcionados por la empresa minera con respecto a las condiciones geológicas para la clasificación del macizo rocoso de la caja techo, caja piso y la veta con el objetivo de determinar la calidad de la roca. Por otro lado, se debe examinar las leyes de mineral, potencia de la veta y el porcentaje de dilución para posteriormente determinar la continuidad y grosor de la veta en un bloque determinado, así mismo, analizar la dilución en función a los criterios fundamentales de la ingeniería de voladura. Este criterio está profundamente arraigado a la geología, perforación, voladura, planeamiento y al proceso de explotación. En esta investigación, se analiza la aplicabilidad de un diseño de la ingeniería de voladura en vetas angostas de una mina subterránea empleado en un contexto peruano de vetas a través de la recolección y observación de datos, utilizando el sistema de clasificación geomecánica de macizo rocoso de Bieniawski, ponderación promedio de la potencia de la veta, dilución geológica y operativa de los tajeos. La generación de soluciones será bajo el enfoque de la fórmula de McCarthy, Software Datamine, JK Simblast y el análisis de resultados finales del comportamiento de la dilución obtenido serán comparados en relación con los iniciales.
Tesis
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Espinoza, Silva Ester Alejandra. "Evaluación del Programa de Educación Ambiental Formulado en el Contexto de la Responsabilidad Social de la Empresa. Caso Forestal Mininco S.A. Región de Aisén." Tesis, Universidad de Chile, 2008. http://repositorio.uchile.cl/handle/2250/105010.
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Volz, Jessica B. [Verfasser], Sabine [Akademischer Betreuer] Kasten, Sabine [Gutachter] Kasten, and Anton [Gutachter] Eisenhauer. "Impact of deep-sea mining on redox environment, biogeochemical processes and element fluxes within and from sediments of the Clarion-Clipperton Zone, Pacific Ocean / Jessica B. Volz ; Gutachter: Sabine Kasten, Anton Eisenhauer ; Betreuer: Sabine Kasten." Bremen : Staats- und Universitätsbibliothek Bremen, 2019. http://d-nb.info/1199537241/34.
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Piana, Janaina. "Variações em trajetórias de acumulação de capacidades tecnológicas em nível intra-empresarial: uma análise empírica da VALE S.A." reponame:Repositório Institucional do FGV, 2016. http://hdl.handle.net/10438/16528.
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This thesis relates to the issue of accumulation of technological capabilities at the firm level, their sources (learning mechanisms) and implications for competitive business performance in natural resources industries in the context of emerging economies. During the past 40 years much progress has been made in research on technological capability accumulation at the level of companies in emerging economies. However, there are still important gaps to be exploited particularly in relation to nature and dynamics of the accumulation of intra-firm technological capabilities paths in the context of natural resources industries, especially in mining. The purpose of the research reported here is to contribute to minimize this gap. In particular, this thesis explores intra-firm variations of technological capabilities accumulation paths, their sources (underlying mechanisms of learning) and some implications that are generated for the competitive performance of the company within the mining industry in Brazil, specifically in the mining company Vale, between 1942 and 2015. To achieve this goal, research is based on the combination of literatures of technological capability accumulation, innovation, learning and industrial development for the construction of the conceptual basis. In parallel, the research draws on a qualitative and inductive research design on primary evidence based on extensive field work. This research design is operated from a single case study in depth at Vale, within three major technology areas: prospecting and mineral exploration, mining and mineral processing. Through the implementation of this strategy, the research found: (1) Paths of technological capabilities accumulation relatively distinct between the three areas of analysis. Specifically: (i) the area of mineral prospecting and exploration there was a technological follower path that achieves global leadership position in innovation and production; (ii) the area of mining also showed up a technological follower path that achieves global leadership position in innovation and production, however, with late accumulation of technological capabilities; and (iii) the area of mineral processing showed an early entrance of a world leader in innovation and production from the creation of a distinct path already mapped by global leaders. The technological capabilities accumulation paths have become similar in 2011 when the three areas presented a world leader in innovation and at the same time demonstrated indications of a stagnation process, which restricts the opportunities to entrance in new technological paths and generation of spillovers. (2) The variations found in the technological capabilities accumulation paths are explained by the way in which different underlying mechanisms of learning were combined and used by the firm. Four combinations of learning mechanisms helped to explain the different directions of technological capabilities accumulation paths in the three areas. (3) The variations in the three technological capabilities accumulation paths generated different implications for competitive performance, specifically in terms of innovative, operational / environmental and spillovers performance. The research findings generate contributions to the understanding of the intra-firm relationship between accumulation of technological capabilities and the underlying learning mechanisms. In addition contribute to the understanding of mining industry as an industry that offers opportunities for significant innovations and can contribute to the diversification of the national industry. So, this industry should get special attention from policy makers and business actions to prevent that firms with high innovative potential deconstruct their innovative capabilities and consequently limit their impact to the technological and economic development in the context of emerging economies.
Esta tese relaciona-se ao tema da acumulação de capacidades tecnológicas em nível de empresa, suas fontes (mecanismos de aprendizagem) e suas implicações para a performance competitiva empresarial, em indústrias relacionadas a recursos naturais no contexto de economias emergentes. Durante os últimos 40 anos muito se avançou no campo da pesquisa sobre acumulação de capacidades tecnológicas em nível de empresas em economias emergentes. Porém, ainda há importantes lacunas a serem exploradas particularmente em relação a natureza e dinâmica de trajetórias de acumulação de capacidades tecnológicas intra-empresariais, no contexto de indústrias relacionadas a recursos naturais, especialmente na mineração. O objetivo da pesquisa aqui reportada é contribuir para minimizar esta lacuna. Particularmente, esta tese explora variações intra-empresariais de trajetórias de acumulação de capacidades tecnológicas, suas fontes (mecanismos subjacentes de aprendizagem) e algumas implicações que são geradas para a performance competitiva da empresa, no âmbito da indústria de mineração no Brasil, especificamente na empresa mineradora Vale, no período entre 1942 e 2015. Para alcançar este objetivo, a pesquisa apoia-se na combinação das literaturas de acumulação de capacidade tecnológica, inovação, aprendizagem e desenvolvimento industrial para a construção da base conceitual. Em paralelo, a pesquisa vale-se de um desenho de pesquisa qualitativo e indutivo baseado em evidências primárias com base em extensivos trabalhos de campo. Esse desenho de pesquisa é operacionalizado a partir de um estudo de caso individual em profundidade na Vale, no âmbito de três grandes áreas tecnológicas: prospecção e pesquisa mineral, lavra, e processamento mineral. Por meio da implementação dessa estratégia, a pesquisa encontrou: (1) Trajetórias de acumulação de capacidades tecnológicas relativamente distintas entre as três áreas de análise. Especificamente: (i) na área de prospecção e pesquisa mineral observou-se uma trajetória de seguidora tecnológica que alcança posição de liderança mundial em inovação e produção; (ii) na área de lavra também evidenciou-se uma trajetória de seguidora tecnológica que alcança posição de liderança mundial em inovação e produção, porém, com acumulação tardia de capacidades tecnológicas; e (iii) na área de processamento mineral houve o alcance precoce de posição de liderança mundial em inovação e produção a partir da criação de uma trajetória distinta da já mapeada pelos líderes globais. As trajetórias de acumulação de capacidades tecnológicas convergem para uma situação similar a partir de 2011 quando as três áreas apresentaram posição de liderança mundial em inovação e ao mesmo tempo demonstraram indícios de entrada em um processo de estagnação, que restringe as oportunidades de entrada em novas trajetórias tecnológicas e de entrada em novos negócios. (2) As variações encontradas nas trajetórias de acumulação de capacidades tecnológicas são explicadas pela maneira pela qual diferentes mecanismos subjacentes de aprendizagem foram combinados e utilizados pela empresa. Foram encontradas quatro combinações de mecanismos de aprendizagem que contribuíram para explicar as diferentes direções das trajetórias de acumulação de capacidades tecnológicas. (3) As variações nas três trajetórias de acumulação de capacidades tecnológicas geraram implicações distintas para a performance competitiva, mais especificamente em termos de performance inovadora, operacional/ambiental e de novos negócios. Os resultados da pesquisa geram contribuições para o entendimento do relacionamento intra-empresarial entre acumulação de capacidades tecnológicas e os mecanismos de aprendizagem subjacentes. E contribuem para o entendimento da mineração como uma indústria que oferece oportunidades para inovações significativas que, inclusive podem implicar na diversificação do tecido industrial nacional. Portanto, tal indústria deve receber atenção especial por parte de decisores de políticas públicas e de ações empresariais para evitar que empresas com alto potencial inovativo desconstruam suas capacidades inovadoras e consequentemente limitem seus impactos para o desenvolvimento tecnológico e econômico no contexto de economias emergentes.
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Polidori, Matteo. "Ottimizzazione delle politiche di gestione delle scorte e progettazione di un magazzino per il servizio ricambi: il caso Schnell spa." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
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Questo progetto di tesi si pone l’obiettivo di riprogettare i principi che regolano l’intero processo legato al servizio post-vendita: dalla gestione della supply chain alle procedure di spedizione dei codici di ricambio, prestando particolare attenzione alle strategie di gestione interna delle scorte per ricambi. In questo documento, vengono quindi descritte le azioni implementate per migliorare la competitività del servizio ricambi. Dopo una breve presentazione dell’azienda e dei modelli teorici utilizzati nella trattazione, vengono illustrati i principali risultati conseguiti relativamente alla riorganizzazione del processo, calcolo delle scorte minime e progettazione di magazzini automatici dedicati ai ricambi.
Per rafforzare la leadership di mercato ottenuta negli anni, grazie all’esperienza, al know-how ed alla cultura che caratterizzano l’azienda, diventa infatti fondamentale concentrare risorse e competenze sui fattori critici che determinano il successo di Schnell a tutti i livelli della propria catena del valore. Perseguendo una strategia di differenziazione, l’azienda si trova a fronteggiare sfide nuove e stimolanti che devono essere intraprese ricercando il migliore compromesso tra le due variabili chiave che determinano il successo di un’impresa: efficienza e livello di servizio.
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Eng, Tord. "Intertextualitet, satir och Heimat i Heinrich Bölls Wanderer, kommst du nach Spa …" Thesis, Stockholms universitet, Institutionen för litteraturvetenskap och idéhistoria, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-134896.
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This thesis deals with the short story “Wanderer, kommst du nach Spa ...” (1950) by the German author Heinrich Böll (1917-1985). The well-established interpretation of this famous short story is that it deals with the dismal fact that the Nazis ended the development of Western culture, which cumulatively had been on its way since Greek antiquity. In this paper another reading is proposed, namely that the short story sheds light on the influence of the Romantic era in Germany and that a certain interpretation and use of Romanticism provided some of the seeds to the obscure ideas of the Nazi era. Research on Böll´s early writings is presented. The notion of cultural memory is introduced. The intertextual connections between Bölls text and other texts are being uncovered. Most fruitful proves the connection between “Wanderer” and the poem “Der Spaziergang” (1795) by Friedrich Schiller (1759-1805) to be. “Wanderer” can be read as a satirical version of Schillers poem. Reasons for Böll to choose Schiller’s elegy as a target are discussed at length. A parable in the story, ”wie ein Gesicht eines Schlafenden” / like a face of a sleeping person, unfolds an undertext to the short story, a Catholic text. Jesus, the Holy Communion, prayers and the eternal cross are present. Wanderer can be read as a requiem over the young soldier. Further, the inability of the wounded soldier to connect to his surroundings is interpreted as a parallell to Germany at the end of the war; the Nazis had stolen the Heimat from the people and it was no longer possible to interpret the world as something you belonged to. While Heinrich Böll on the surface of the text tries to recapture the German language from its nazi-poisend condition, the protagonist within the text regains his identity by means of his own handwriting - a part of his language.
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Reis, Walison Silva. "Usos hegemônicos e não hegemônicos do território no sudeste do Pará: a moderna mineração e o circuito inferior da economia urbana em Parauapebas." Universidade Federal de Uberlândia, 2016. https://repositorio.ufu.br/handle/123456789/17972.
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Este estudo descreve e analisa o processo de modernização do Sudeste do Pará a partir da década 1950 decorrente das diretrizes geopolíticas do Estado de integrar o território amazônico a economia nacional e internacional por meio da exploração das potencialidades dos seus bens naturais. O município de Parauapebas emancipado de Marabá no fim da década de 1980 surge como resultado concreto das estratégias economicistas do Estado, por meio das relações de poder estabelecidas com a extração e exportação de minério de ferro comandada pela ex-estatal CVRD - atualmente denominada Vale S.A. - Parauapebas tem conjugado as contradições das atividades modernas da política mineradora, focadas no comércio exterior, e as pequenas atividades não modernas, pouco capitalizadas e de baixa organização, enraizadas à vida local da cidade e/ou da região, constituindo, desse modo, um espaço antagônico. Assim, a proposta desta pesquisa consiste em detalhar e compreender a dinâmica urbana de Parauapebas sob a ótica da teoria dos circuitos da economia urbana, formulada por Milton Santos (2008) que segmenta o espaço urbano dos países subdesenvolvidos em circuito superior e inferior. As pequenas atividades comerciais e de prestação de serviços analisadas nos bairros Cidade Nova e Rio Verde permitem delinear esse espaço de incoerências, bem como compreender as expressões do circuito inferior da economia urbana realizadas pela população excluída da moderna indústria de mineração, indiferente à realidade local e poupadora de mão de obra.This study describes and analyzes the process of modernization of the Southeastern part of Pará since the early 1950's due to geopolitical guidelines of the State towards the integration of the Amazon's territory to the national and international economy by exploiting the potential of its natural resources. The municipality of Parauapebas, emancipated from Marabá at the end of the 1980s, emerged as a concrete result of economistic strategies of the state, through the relations of power established with the extraction and export of iron ore, led by former state company CVRD - now called Vale SA. - Parauapebas has combined the contradictions of modern activities of mining policy, focused on foreign trade, and small non - modern activities, thinly capitalized and poorly organized, rooted to the local life of the city and/or region, thereby constituting an antagonistic space. Thus, the purpose of this research is to drill down and understand the urban dynamics of Parauapebas from the perspective of the Theory of Two Circuits of Urban Economics, formulated by Santos (2008), that segments the urban areas of developing countries into Upper and Lower Circuits.Small commercial activities and services, analyzed in neighborhoods New Town and Rio Verde, allowed for a delineation on the inconsistencies, as well as a comprehension of the expressions of the lower urban economy circuit, brought forth by the excluded population of modern mining industry, which is indifferent to the local reality, and confined in terms of manpower.
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Zamora, Paredes Vidal Enrike. "Propuesta de diseño de mallas de perforación y voladura empleando modificación al modelo matemático de Pearse con la finalidad de optimizar la fragmentación de rocas en la mina Tacaza de Consorcio de Ingenieros Ejecutores Mineros S.A. (CIEMSA)." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/654495.
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En los últimos años, la minería se ha enfrentado a una disminución paulatina del precio de los metales, generando una reducción de la rentabilidad del negocio producto de menores reservas minerales. Esto ha ocasionado que se adopten esquemas operativos enfocados en la mejora continua de cada uno de los procesos dentro del ciclo de minado, a fin de reducir los costos. Por tal motivo, es necesario visualizar cada una de las actividades involucradas, como la perforación y voladura, las cuales tienen un impacto productivo y económico en el proceso global.
En consecuencia, la presente investigación se enfoca en optimizar la fragmentación de rocas, a través de un diseño de malla de perforación y voladura, mediante la integración de los conceptos de ingeniería de la voladura y caracterización del macizo rocoso. Para esto, se aplicará el modelo matemático de Pearse, a fin de calcular los parámetros controlables del diseño y obtener los resultados esperados. Asimismo, el alcance del trabajo abarca el análisis de la productividad del ciclo de minado, así como, la cuantificación del impacto de la propuesta en materia de costos.
Se comienza con el análisis de línea base, que consta de la medición de resultados producto de los diseños actuales de malla de P&V, con la finalidad de determinar las variables que están generando fragmentación gruesa de rocas. Posteriormente, se plantea la propuesta de diseño de malla considerando la mayor cantidad de datos e información del tajo Tacaza. Luego se ejecutan los trabajos en campo, que consta del seguimiento y control de actividades, a fin de cumplir con los parámetros diseñados. Finalmente, se miden los resultados de fragmentación en el software Wipfrag, y se analiza la productividad y costos en el ciclo de minado.
De los resultados se obtiene una mejora en la fragmentación, ya que se logra reducir el diámetro de rocas de 13.0 a 5.0 pulgadas en promedio. Esto conlleva a un incremento en el rendimiento efectivo de los equipos y una reducción de costos de US$ 9,600 mensuales aproximadamente. Estas nuevas medidas generan valor agregado a la compañía, a través de una operación minera sostenible, que busca hacer rentable el negocio desde una visión holística del proceso.In recent years, mining has faced a gradual decrease in the metal´s prices, generating a reduction in the profitability of the business as a result of lower mineral reserves. This has led to the adoption of operational schemes focused on the continuous improvement of each of the processes within the mining cycle, in order to reduce costs. For this reason, it is necessary to visualize each of the activities involved, such as drilling and blasting, which have a productive and economic impact on the global process. Consequently, this research focuses on optimizing rock fragmentation, through a drill and blast mesh design, by integrating the engineering concepts of blasting and characterization of the rock mass. For this, the Pearse mathematical model will be applied, in order to calculate the controllable parameters of the design and obtain the expected results. Likewise, the scope of the work includes the analysis of the productivity of the mining cycle, as well as the quantification of the impact of the proposal in terms of costs. It begins with the baseline analysis, which consists of measuring the results of current P&V mesh designs, in order to determine the variables that are generating coarse rock fragmentation. Subsequently, the mesh design proposal is proposed considering the greater amount of data and information from the Tacaza pit. Then the field work is carried out, consisting of the monitoring and control of activities, in order to comply with the designed parameters. Finally, the fragmentation results are measured in the Wipfrag software, and the productivity and costs in the mining cycle are analyzed. From the results, an improvement in fragmentation is obtained, since it is possible to reduce the diameter of rocks from 13.0 to 5.0 inches on average. This leads to an increase in the effective performance of the equipment and a cost reduction of approximately US $ 9,600 per month. These new measures generate added value for the company, through a sustainable mining operation, which seeks to make the business profitable from a holistic view of the process.
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Ferreira, Fernanda Baldasso. "Análise da eficiência relativa das usinas mini-mills da Gerdau S.A. nas Américas: Um estudo a partir da análise envoltória de dados." Universidade do Vale do Rio dos Sinos, 2012. http://www.repositorio.jesuita.org.br/handle/UNISINOS/4164.
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UNISINOS - Universidade do Vale do Rio dos Sinos
Em decorrência das novas condições de mercado, marcado pelas privatizações, crises e novos entrantes, a indústria siderúrgica têm buscado o aprimoramento da gestão dos seus processos, através da maximização da produção e otimização dos insumos. Neste contexto, essa dissertação tem como objetivo analisar os fatores determinantes da eficiência nas usinas minimills da Gerdau S.A. localizadas em diferentes países das Américas do Sul e Norte. Trata-se de um estudo descritivo e exploratório, com abordagem quantitativa, realizado com dados dos anos de 2009 e 2010. Foi utilizado o procedimento de estudo de caso, incluindo 24 unidades na análise. Com a utilização da metodologia da Análise Envoltória de Dados (DEA) foi possível mensurar a eficiência técnica e econômica relativa das usinas selecionadas e identificar as unidades benchmarks. Os principais achados evidenciam que as usinas brasileiras são as mais eficientes tecnicamente, sendo os fatores relevantes para tais resultados a sua produtividade nos insumos de número de acidentes e tempo de parada dos seus equipamentos. Um grupo de usinas americanas também foi considerado tecnicamente eficiente se destacando na produtividade dos inputs de ativo operacional e mão-de-obra. Ao substituir os insumos por seus preços relativos fica evidente a superioridade nos resultados das usinas brasileiras, sendo estas mais produtivas nos três insumos da análise de eficiência econômica: ativo operacional, despesas com mão-de-obra e custo do aço.
As a result of new market conditions, influenced by privatizations, crises and newcomers, the steel industry has sought the improvement of its management process, through production maximization and input optimization. In this context this dissertation aims to analyze the determining factors for the efficiency of Gerdau’s mini-mills, located in different countries of South and North America. This is a descriptive and exploratory study, with quantitative approach, based on data from the years 2009 and 2010. Case study was the procedure adopted, including 24 units of analysis. With the use of the Data Envelopment Analysis (DEA) methodology it was possible to measure the technical and economic efficiency of the selected mills, as well as to identify the benchmarks. The main findings show that the Brazilian mills are the most technically efficient; the relevant factors behind these results are their productivity in the safety incident input and low equipment downtime. A group of American mills was also considered technically efficient due to high productivity in the operational assets and labor inputs. By replacing the inputs for their relative prices, it becomes evident the superiority of the Brazilian mills in terms of result, which were more productive in the three economic efficiency analysis inputs: operational assets, administrative expenditure and costs of steelmaking.
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Shepel, Taras. "Obosnovanie parametrov kovšej zemlečerpatel'nych snarjadov dlja glubokovodnoj dobyči organo-mineral'nych osadkov." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2015. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-163765.
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The thesis is devoted to determining the parameters of the bucket to increase productivity of dredgers while mining deep-water organic-mineral sediments. It was achieved by increasing the fill factor through determining the rational geometrical parameters of the bucket. Analytical dependencies of the rational height and length of the bucket on the cutting parameters and physical-and-mechanical properties of the excavated sediments were determined. Expressions for defining forces while digging plasticity water-saturated soils were developed. Experimental investigations of the process of digging deep-water organic-mineral sediments in laboratory conditions and in the real conditions of operating single-bucket dredger in the Black Sea at the depth of 1885 m were carried out. The technique for calculation of the bucket\'s parameters was developed.
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Konstantinidis, Ioannis. "Le cadre institutionnel de la convention des Nations Unies sur le droit de la mer en quête de son avenir." Thesis, Paris 1, 2016. http://www.theses.fr/2016PA01D001.
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Fruit de négociations longues et ardues, la Convention des Nations Unies sur le droit de la mer signée en 1982 est sans doute l’un des traités multilatéraux les plus réussis sur le plan international. Pierre angulaire de la Convention, l’attribution du statut de « patrimoine commun de l’humanité » aux fonds marins et leur sous-sol situés au-delà des limites de la juridiction nationale ainsi qu’à leurs ressources a constitué une innovation majeure dans le domaine du droit international. Le succès de la Convention tient notamment au fait qu’elle a établi un cadre institutionnel sans précédent chargé de la mise en œuvre de la Convention et incarné par trois institutions : l’Autorité internationale des fonds marins, la Commission des limites du plateau continental et le Tribunal international du droit de la mer. Dotées de statuts juridiques divers et de compétences différentes, ces institutions fonctionnent depuis l’entrée en vigueur de la Convention en 1994. Vingt-et-un ans après sa fondation, il convient d’examiner ce cadre institutionnel dans son ensemble et d’évaluer sa mise en œuvre pour mieux comprendre le rôle complémentaire des institutions. Cette étude porte un regard critique sur la genèse, la nature, le fonctionnement et la pratique des institutions, et s’attache à les considérer dans leur interaction et leur interdépendance. Identifier les insuffisances institutionnelles et interinstitutionnelles, ainsi que les défis auxquels les institutions sont confrontées est un préalable indispensable à la recherche de solutions efficaces et viables pour surmonter les difficultés rencontrées, à la mise en œuvre harmonieuse de la Convention et à la concrétisation du concept fondamental de patrimoine commun de l’humanité. Dans cette perspective, l’importance du Tribunal dans son rôle de garant de l’intégrité de la Convention et le pouvoir créateur du juge international face aux lacunes conventionnelles méritent une attention toute particulièreThe result of protracted and arduous negotiations, the United Nations Convention on the Law of the Seasigned in 1982 is undoubtedly one of the most successful multilateral treaties at the international level. The principle of the common heritage of mankind, represented by the seabed, ocean floor and subsoil and their resources beyond the limits of national jurisdiction, is the cornerstone of the Convention and constituted a major innovation in international law. The success of the Convention lies, in particular, in the establishment of an unprecedented institutional framework, which is incarnated by three institutions: the International Seabed Authority, the Commission on the Limits of the Continental Shelf and the International Tribunal for the Law of the Sea. These institutions of diverse legal status are vested with different functions and have been in operation since the entry into force of the Convention in 1994. Twentyone years following its establishment, it is necessary to review this institutional framework as a whole and to assess its implementation in order to better understand the complementary role of the institutions. This study critically examines the genesis, the nature, the functioning and the practice of the institutions throughtheir interaction and their interdependence. Identifying institutional and inter-institutional weaknesses, and the challenges that the institutions face is an indispensable prerequisite for ensuring effective and viablesolutions, the harmonious implementation of the Convention and for giving substance to the principle ofthe common heritage of mankind. In this context, the role of the Tribunal as the guarantor of the integrityof the Convention and the creative power of the international judge merit special attention
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Lim, Yen Peng. "Malnutrition and clinical outcomes in elderly patients from a Singapore acute hospital." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/44143/1/Yen_Peng_Lim_Thesis.pdf.
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Older adults, especially those acutely ill, are vulnerable to developing malnutrition due to a range of risk factors. The high prevalence and extensive consequences of malnutrition in hospitalised older adults have been reported extensively. However, there are few well-designed longitudinal studies that report the independent relationship between malnutrition and clinical outcomes after adjustment for a wide range of covariates. Acutely ill older adults are exceptionally prone to nutritional decline during hospitalisation, but few reports have studied this change and impact on clinical outcomes. In the rapidly ageing Singapore population, all this evidence is lacking, and the characteristics associated with the risk of malnutrition are also not well-documented. Despite the evidence on malnutrition prevalence, it is often under-recognised and under-treated. It is therefore crucial that validated nutrition screening and assessment tools are used for early identification of malnutrition. Although many nutrition screening and assessment tools are available, there is no universally accepted method for defining malnutrition risk and nutritional status. Most existing tools have been validated amongst Caucasians using various approaches, but they are rarely reported in the Asian elderly and none has been validated in Singapore. Due to the multiethnicity, cultural, and language differences in Singapore older adults, the results from non-Asian validation studies may not be applicable. Therefore it is important to identify validated population and setting specific nutrition screening and assessment methods to accurately detect and diagnose malnutrition in Singapore. The aims of this study are therefore to: i) characterise hospitalised elderly in a Singapore acute hospital; ii) describe the extent and impact of admission malnutrition; iii) identify and evaluate suitable methods for nutritional screening and assessment; and iv) examine changes in nutritional status during admission and their impact on clinical outcomes. A total of 281 participants, with a mean (+SD) age of 81.3 (+7.6) years, were recruited from three geriatric wards in Tan Tock Seng Hospital over a period of eight months. They were predominantly Chinese (83%) and community-dwellers (97%). They were screened within 72 hours of admission by a single dietetic technician using four nutrition screening tools [Tan Tock Seng Hospital Nutrition Screening Tool (TTSH NST), Nutritional Risk Screening 2002 (NRS 2002), Mini Nutritional Assessment-Short Form (MNA-SF), and Short Nutritional Assessment Questionnaire (SNAQ©)] that were administered in no particular order. The total scores were not computed during the screening process so that the dietetic technician was blinded to the results of all the tools. Nutritional status was assessed by a single dietitian, who was blinded to the screening results, using four malnutrition assessment methods [Subjective Global Assessment (SGA), Mini Nutritional Assessment (MNA), body mass index (BMI), and corrected arm muscle area (CAMA)]. The SGA rating was completed prior to computation of the total MNA score to minimise bias. Participants were reassessed for weight, arm anthropometry (mid-arm circumference, triceps skinfold thickness), and SGA rating at discharge from the ward. The nutritional assessment tools and indices were validated against clinical outcomes (length of stay (LOS) >11days, discharge to higher level care, 3-month readmission, 6-month mortality, and 6-month Modified Barthel Index) using multivariate logistic regression. The covariates included age, gender, race, dementia (defined using DSM IV criteria), depression (defined using a single question “Do you often feel sad or depressed?”), severity of illness (defined using a modified version of the Severity of Illness Index), comorbidities (defined using Charlson Comorbidity Index, number of prescribed drugs and admission functional status (measured using Modified Barthel Index; MBI). The nutrition screening tools were validated against the SGA, which was found to be the most appropriate nutritional assessment tool from this study (refer section 5.6) Prevalence of malnutrition on admission was 35% (defined by SGA), and it was significantly associated with characteristics such as swallowing impairment (malnourished vs well-nourished: 20% vs 5%), poor appetite (77% vs 24%), dementia (44% vs 28%), depression (34% vs 22%), and poor functional status (MBI 48.3+29.8 vs 65.1+25.4). The SGA had the highest completion rate (100%) and was predictive of the highest number of clinical outcomes: LOS >11days (OR 2.11, 95% CI [1.17- 3.83]), 3-month readmission (OR 1.90, 95% CI [1.05-3.42]) and 6-month mortality (OR 3.04, 95% CI [1.28-7.18]), independent of a comprehensive range of covariates including functional status, disease severity and cognitive function. SGA is therefore the most appropriate nutritional assessment tool for defining malnutrition. The TTSH NST was identified as the most suitable nutritional screening tool with the best diagnostic performance against the SGA (AUC 0.865, sensitivity 84%, specificity 79%). Overall, 44% of participants experienced weight loss during hospitalisation, and 27% had weight loss >1% per week over median LOS 9 days (range 2-50). Wellnourished (45%) and malnourished (43%) participants were equally prone to experiencing decline in nutritional status (defined by weight loss >1% per week). Those with reduced nutritional status were more likely to be discharged to higher level care (adjusted OR 2.46, 95% CI [1.27-4.70]). This study is the first to characterise malnourished hospitalised older adults in Singapore. It is also one of the very few studies to (a) evaluate the association of admission malnutrition with clinical outcomes in a multivariate model; (b) determine the change in their nutritional status during admission; and (c) evaluate the validity of nutritional screening and assessment tools amongst hospitalised older adults in an Asian population. Results clearly highlight that admission malnutrition and deterioration in nutritional status are prevalent and are associated with adverse clinical outcomes in hospitalised older adults. With older adults being vulnerable to risks and consequences of malnutrition, it is important that they are systematically screened so timely and appropriate intervention can be provided. The findings highlighted in this thesis provide an evidence base for, and confirm the validity of the current nutrition screening and assessment tools used among hospitalised older adults in Singapore. As the older adults may have developed malnutrition prior to hospital admission, or experienced clinically significant weight loss of >1% per week of hospitalisation, screening of the elderly should be initiated in the community and continuous nutritional monitoring should extend beyond hospitalisation.
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Hsin-Mu, Tsai. "Mining Spatial Association Rules with 9D-SPA Representation." 2007. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2701200719342100.
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Cheng, Tun-Yu, and 鄭敦宇. "Transfer of Technology for Deep Sea Bed Mining." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/62565442738249161158.
Full textAbstract:
碩士國立海洋大學
海洋法律研究所
87
The convention''s legal regime for deep sea-bed mining was laboriously arrived at after nine years of negotiations in UNCLOS III.The different interests of these two major groups of states meant that they view the same issues in very different ways and drew different conclusions.This study uses a comparative method to assess the issues,related to transfer technology for deep sea-bed mining.The analysis will be based on the documents of official records of UNCLOS III,the 1982 LOS Cinvention and Annexes,and the 1994 Agreement.
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Tsai, Hsin-Mu, and 蔡欣穆. "Mining Spatial Association Rules with 9D-SPA Representation." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/43867200966516689276.
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碩士國立臺灣大學
資訊管理學研究所
95
In this thesis, we propose a novel spatial data mining algorithm, called 9DSPA-Miner, to mine the spatial association rules from an image database, where every image is represented by the 9D-SPA representation. Our proposed method consists of three phases. In the first phase, we scan the database once and create an index structure. In the second phase, we scan the index structure to find all frequent patterns of length two. In the third phase, we use the frequent k-patterns (k≧2) to generate candidate (k+1)-patterns and check each generated candidate if its support is not less than the user-specified minimum support threshold by using the index structure. Then, the steps in phase 3 are repeated until no more frequent patterns can be found. Since 9DSPA-Miner uses the characteristics of the 9D-SPA representation to prune most of impossible candidates and the index structure to speed up the mining process, the experiment results demonstrate that it is more efficient and scalable than the modified Apriori method.
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Ermida, Maria de Menezes Pena de Azevedo. "The precautionary principle applied to deep-sea mining." Master's thesis, 2019. http://hdl.handle.net/10362/85079.
Full textAbstract:
À medida que a popularidade da mineração em mar profundo para lá da jurisdição dos Estados cresce entre a comunidade internacional, aumenta também a necessidade de avaliar se estamos a mover-nos demasiado rápido na direção do desconhecido e se a aplicação do Princípio da Precaução é necessária ou não. Para esse efeito, analisámos os impactos da mineração em mar profundo e a evolução do seu quadro legal. Seguidamente, estudámos o Princípio da Precaução, tendo em vista a sua potencial aplicação a esta atividade. Chegámos à conclusão de que o Princípio é já aplicado em alguns aspetos do quadro legal da mineração em mar profundo, mas que a sua inclusão é ainda insuficiente para fazer face aos potenciais impactos desta atividade. Assim sendo, apontámos algumas medidas cujo objetivo é o fortalecimento deste quadro legal tendo por base o Princípio da Precaução.As the popularity of deep-sea mining beyond national jurisdiction grows amongst the international community, so does the need to assess whether or not humanity is moving too fast into something unknown and if the application of the Precautionary Principle is in order. Throughout this thesis we analysed the impacts of this activity and the evolution of its legal framework. We also focused on the Precautionary Principle, its core elements and determined whether or not there was cause for applying it to deep-sea mining. We found that there is, in fact, cause and that this Principle has already been included in some aspects of the legal framework of deep-sea mining beyond national jurisdiction. However, this inclusion is still insufficient and in order to build a legal framework based upon the Precautionary Principle, some necessary measures are still missing.
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Lee, Yung-Hsiang, and 李永翔. "Analysis of tropical sea surface temperature using data mining technique." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/92947541021753039521.
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博士國立臺灣海洋大學
海洋環境資訊學系
100
Tropical sea surface temperature (SST) data derived from the Geostationary Operational Environmental Satellite (GOES) is analyzed by using data mining to explore the error sources of data and to further improve its accuracy. The SST data has been pre-processed into two kinds of data set, the daily mean and hourly. The root mean square error (RMSE) of daily SST estimate is reduced from 0.58 K to 0.37 K and the mean absolute percentage error (MAPE) is 1.03% by using the Back Propagation Neural Network (BPN) algorithm. For the hourly SST estimate, its RMSE is also reduced from 0.66 K to 0.44 K and the MAPE is 1.1%. We also applied the decision tree algorithm to examine if the accuracy of GOES SST product can be improved. The results show that the RMSE and the MAPE are 0.47 K and 1.3%, respectively for daily dataset, and are 0.41 K and 1.0%, respectively for hourly dataset. This indicates that the BPN algorithm has a better ability of correction than that of decision tree algorithm. While the proportion of cloud contamination is in different circumstances, the RMSE of retrieval satellite SST by using the BPN algorithm can be maintained below 0.38 K. This demonstrated the efficiency ability of anti-noise analysis of the neural algorithm. The factor analysis also shows that the errors are mainly caused by air temperature and then followed by wind speed and relative humidity. From the analysis of classification rules, wind speed and relative humidity have significant classifying ability to access the characteristics of local climate. It indicates that the characteristics of local climate can affect the accuracy of SST derived from satellite infrared sensors. This study successfully demonstrates that the neural network algorithm can effectively reduce the SST error derived from GOES and the influent factors can be extracted by the decision tree algorithm.
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Jin, Xiu-Ming, and 金秀明. "A Study on UN Convention on the Law of the Sea 1982 Deep-Sea Mining System." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/66389934519794441508.
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