Thèses sur le sujet « Technical optimization »
Pour voir les autres types de publications sur ce sujet consultez le lien suivant : Technical optimization.
Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres
Consultez les 50 meilleures thèses pour votre recherche sur le sujet « Technical optimization ».
À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.
Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.
Parcourez les thèses sur diverses disciplines et organisez correctement votre bibliographie.
1
Nazir, Ahsan. « Modelling and optimization of electrospun materials for technical applications ». Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH0598/document.
Texte intégralRésumé :
Ce travail de recherche traite de l’optimisation et de la modélisation de nanofibres obtenues par filage électrostatique pour des applications techniques en tant que, a) cellules résistives pour génération de chaleur et b) couche ultra filtrante pour système de protection respiratoire. Afin d’intégrer ces matériaux nanofibreux aux applications visées, deux procédés de production ont été mis en oeuvre, à savoir mono-aiguille et multijets. Une étude statistique a été réalisée pour modéliser et optimiser les non-tissés de nanofibres pour des productions à échelle laboratoire et semi-industrielle. L’outil statistique c’est révélé pertinent pour anticiper la morphologie des matériaux produits et assurer une homogénéité optimale. Les non-tissés présentant les caractéristiques morphologiques souhaitées ont été sélectionnés, testés, et les résultats ont révélé leur fort potentiel pour les champs applicatifs visés. Ces travaux valident deux pistes de recherche qui déboucheraient sur une intégration concrète de ces matériaux innovantsOptimization and modelling of electrospun nanofibrous nonwovens and their technical applications, i-e heat generation and respiratory protection, were studied in this work. For utilization in these applications, nanowebs were statistically modelled and optimized using different electrospinning techniques i-e needle and needleless setups based on significance of these techniques for lab and bulk scale production of nanowebs. Moreover, quantitative impact of different electrospinning parameters was also observed. Statistical analysis was found to be a useful tool for study of electrospinning process and production of nanowebs with minimum defects. The optimized nanowebs were used for selected applications and based on results it was concluded that they can be a potential material for both, heat generation and respiratory protection. These observations are expected to initiate more focused studies in both the fields
2
Webb, Tasha. « A technical communication internship with the Central Ohio Transit Authority (COTA) – The Ellipse Optimization Project ». Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1430395167.
Texte intégral
3
Allala, Prathyusha. « Genetic Optimization of Turbo Decoder ». Ohio University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1293681661.
Texte intégral
4
Lerch, Markus. « Technical-economic analysis, modeling and optimization of floating offshore wind farms ». Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/668880.
Texte intégralRésumé :
The offshore wind sector has grown significantly during the last decades driven by the increasing demand for clean energy and to reach defined energy targets based on renewable energies. As the wind speeds tend to be faster and steadier offshore, wind farms at sea can reach higher capacity factors compared to their onshore counterparts. Furthermore, fewer restrictions regarding land use, visual impact, and noise favors the application of this technology. However, most of today's offshore wind farms use bottom-fixed foundations that limit their feasible application to shallow water depths.
Floating substructures for offshore wind turbines are a suitable solution to harness the full potential of offshore wind as they have less constraints to water depths and soil conditions and can be applied from shallow to deep waters. As several floating offshore wind turbine (FOWT) concepts have been successfully tested in wave tanks and prototypes have been proven in open seas, floating offshore wind is now moving towards the commercial phase with the first floating offshore wind farm (FOWF) commissioned in 2017 and several more are projected to be constructed in 2020. This transition increases the need for comprehensive tools that allow to model the complete system and to predict its behavior as well as to assess the performance for different locations.
The aim of this thesis is to analyze from a technical and economic perspective commercial scale FOWFs. This includes the modeling of FOWTs and the study of their dynamic behavior as well as the economic assessment of different FOWT concepts. The optimization of the electrical layout is also addressed in this thesis.
The first model developed is applied to analyze the performance of a Spar type FOWT. The model is tested with different load cases and compared to a reference model. The results of both models show an overall good agreement. Afterwards, the developed model is applied to study the behavior of the FOWT with respect to three different offshore sites. Even at the site with the harshest conditions and largest motions, no significant loss in energy generation is measured, which demonstrates the good performance of this concept.
The second model is used to perform a technical-economic assessment of commercial scale FOWFs. It includes a comprehensive LCOE methodology based on a life cycle cost estimation as well as the computation of the energy yield. The model is applied to three FOWT concepts located at three different sites and considering a 500MW wind farm configuration. The findings indicate that FOWTs are a high competitive solution and energy can be produced at an equal or lower LCOE compared to bottom-fixed offshore wind or ocean energy technologies. Furthermore, a sensitivity analysis is performed to identify the key parameters that have a significant influence on the LCOE and which can be essential for further cost reductions.
The last model is aimed to optimize the electrical layout of FOWFs based on the particle swarm optimization theory. The model is validated against a reference model at first and is then used to optimize the inter-array cable routing of a 500MW FOWF. The obtained electrical layout results in a reduction of the power cable costs and a decrease of the energy losses. Finally, the use of different power cable configurations is studied and it is shown that the use of solely dynamic power cables in comparison to combined dynamic and static cables results in decreased acquisition and installation costs due to the avoidance of cost-intensive submarine joints and additional installation activities.El sector eólico marino ha crecido significativamente durante las últimas décadas impulsado por la creciente demanda de energía limpia. Los parques eólicos en el mar pueden alcanzar factores de capacidad más altos en comparación a los parques eólicos en la tierra debido a que las velocidades del viento tienden a ser más altas y constantes en el mar. Ademas, existen menos restricciones con respecto al uso de la tierra, el impacto visual y el ruido. Sin embargo, la mayoría de los parques eólicos actuales utilizan subestructuras fijas que limitan su aplicación factible a aguas poco profundas. Las subestructuras flotantes para turbinas eólicas marinas (FOWTs en inglés) son una solución adecuada para aprovechar todo el potencial de la energía eólica, ya que tienen menos restricciones para las profundidades del agua y el fondo marino. Dado que varios prototipos de FOWTs se han probado con éxito en el mar, la industria ahora esta entrando a la fase comercial con el primer parque eólico flotante (FOWF en inglés) operativo y se proyecta que se pondrán en marcha más en los próximos anos. Esta transición aumenta la necesidad de herramientas integrales que permitan modelar el sistema completo y predecir su comportamiento, así como evaluar el rendimiento para diferentes lugares. El objetivo de esta tesis es analizar desde una perspectiva técnica y económica los FOWFs a escala comercial. Esto incluye el modelado de FOWTs, el estudio de su comportamiento dinámico, y la evaluación económica de diferentes conceptos. La optimización del diseño eléctrico también se aborda en esta tesis. El primer modelo desarrollado se aplica para analizar el rendimiento de un FOWT tipo Spar. El modelo se prueba con diferentes tipos de carga y se compara con un modelo de referencia. Los resultados de ambos modelos muestran una buena concordancia. Posteriormente, el modelo se aplica para estudiar el comportamiento con respecto a tres lugares diferentes. Los resultados muestran que incluso en el sitio con las condiciones más severas, no se mide ninguna pérdida significativa en la generación de energía, lo que demuestra el buen rendimiento de este concepto. El segundo modelo se utiliza para realizar una evaluación técnico-económica de los FOWF a escala comercial. Esto incluye una metodología integral del costo nivelado de energía (LCOE en ingles). El modelo se aplica a tres conceptos de FOWTs ubicados en tres lugares diferentes y considerando un parque eólico de 500MW. Los resultados indican que los FOWTs son una solución altamente competitiva y que la energía se puede producir con un LCOE igual o inferior en comparación con los parques eólicos con subestructuras fijas o las tecnologías de energía oceánica. Asimismo, se realiza un análisis de sensibilidad para identificar los parámetros claves que tienen una influencia significativa en el LCOE y que pueden ser esenciales para reducciones de costos. El último modelo se aplica para optimizar el diseño eléctrico en función de la teoría de optimización por enjambre de partículas. Inicialmente el modelo se valida contra un modelo de referencia y luego se utiliza para optimizar la conexión de los cables entre los FOWTs. El diseño eléctrico obtenido da como resultado una reducción de los costos de cables y una disminución de las pérdidas de energía. Finalmente, se estudia el uso de diferentes configuraciones de cables y se demuestra que el uso de cables únicamente dinámicos en comparación con los cables dinámicos y estáticos combinados da como resultado una disminución de los costos de adquisición e instalación debido a que evitan la necesidad de juntas submarinas costosas y costos adicionales de instalación.
5
Foster, James C. « Joint optimization of the technical and social aspects of workplace design ». Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/31002.
Texte intégralRésumé :
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1985.MICROFICHE COPY AVAILABLE IN ARCHIVES AND DEWEY.
Bibliography: leaves 91-97.
by James C. Foster.
M.S.
6
Гладуш, Ірина Анатоліївна. « Professionally oriented foreign language training : self-study optimization at technical universities ». Thesis, Київський національний університет технологій та дизайну, 2020. https://er.knutd.edu.ua/handle/123456789/15192.
Texte intégral
7
Jinks, Douglas David. « Drying of latex backcoated acrylic fabrics : optimization and control ». Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/11242.
Texte intégral
8
CHANG, CARLOS ALEXANDRE. « TECHNICAL ECONOMIC OPTIMIZATION OF A HYBRID PHOTOVOLTAIC-DIESEL SYSTEM WITH BATTERY BANK ». PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=21838@1.
Texte intégralRésumé :
PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
Esta dissertação analisa o custo, viabilidade e otimização do desempenho de um sistema híbrido de produção de energia elétrica, constituído de módulos fotovoltaicos, banco de baterias e gerador diesel. Foram realizadas simulações para diferentes configurações de sistema, variando tanto a profundidade de descarga quanto a capacidade total e operacional do banco de baterias, e o consumo total. O perfil do consumo foi mantido inalterado em todas as simulações realizadas. Para a simulação foi utilizado banco de dados constituído por informações meteorológicas, preços dos equipamentos do sistema, demanda de eletricidade e perfil de consumo da agrovila de Campinas (AM). Em posse desse conjunto de informações foi então elaborada análise de viabilidade econômica do fornecimento de eletricidade para uma comunidade rural localizada em uma região remota. Ou seja, localizada em uma região distante do acesso as redes de distribuição de energia elétrica. A simulação foi configurada para um sistema que possibilitasse acesso a equipamentos básicos (atendendo o Manual de Projetos Especiais – necessidade de atender refrigeração, comunicação e iluminação), fornecendo eletricidade com o menor custo possível. A avaliação do projeto demonstra que o mesmo é uma boa opção de investimento, considerando que o fornecimento elétrico é peça chave para o desenvolvimento econômico e social de qualquer localidade. Para a realização do estudo utilizou-se banco de dados de radiação solar e temperatura do município de Manaus, pertencente ao Estado do Amazonas, pressupondo-se que a localidade em questão possui condições meteorológicas semelhantes à área de estudo, desprezando-se possíveis diferenças. Além do que, o referido estudo adotou um período de vida útil de 25 anos ou mais para o sistema.
This dissertation analyses the cost, feasibility and optimization performance of a hybrid electric energy production system, composed of photovoltaic modules, storage batteries and a diesel generator. Several performance simulations were made for different system configurations, varying discharge depth, both total and operating capacity of the storage batteries, and total consumption, using the same profile shape. A data base was used for the simulations, using meteorological information, component prices, and electric energy power and consumption profiles for the rural Village of Campinas (AM). As a result, an economically feasible proposal was detailed for supplying electric energy to a rural village, which is away from available commercial networks. The simulation was used to determine the basic equipment configuration to minimize the electricity cost. The project evaluation shows it is a good investment option, considering that electric energy supply is fundamental for the social and economic development. Solar radiation and temperature data for the city of Manaus, AM, ware used for the simulations, which is considered to be approximately the same as for the rural Village of Campinas due to its proximity. In addition, this study adopted a working life of 25 years or more for the system.
9
Taylor, Stephen. « Radiation Protection in Radiology : Technical and Regulatory Uncertainties ». Doctoral thesis, Universite Libre de Bruxelles, 2021. https://dipot.ulb.ac.be/dspace/bitstream/2013/317082/4/TOC.pdf.
Texte intégralRésumé :
Trois axes sont définis par la Commission Internationale de Radioprotection pour gouverner la radioprotection :la justification, l’optimisation et des règlementations quant aux limites de doses d’irradiation. Ce travail vise à vérifier l’adéquation des méthodes et des techniques appliquées à ces trois axes. Quatre articles originaux sont présentés à cet effet.Concernant la justification, nous avons comparé des situations cliniques présentes/absentes de deux guidelines ainsi que la pertinence des prescriptions :les guidelines établis par Euro-2000 et ceux actualisés proposés par la Société Européenne de Radiologie sous la forme d’une plateforme numérique appelée iGuide. Davantage de cas cliniques rencontrés en pratique courante sont repris dans iGuide par rapport aux Guidelines Euro-2000. Néanmoins, l’inadéquation des recommandations aux situations cliniques auxquelles les prescripteurs sont confrontés contribue à expliquer leur faible adhésion et limite leur contribution à la justification.Concernant l’optimisation, nous avons investigué une technique qui vise à réduire l’irradiation mammaire en tomodensitométrie (TDM) thoracique. Sa conception prévoit une augmentation de l’irradiation en dehors du tissu mammaire afin de maintenir la qualité d’image pulmonaire. Les angles établis sur base anthropomorphique sont inadéquats. Le système risque d’engendrer un excès d’irradiation. Un tel système doit être évalué avant sa mise en œuvre car il peut engendrer une augmentation plutôt qu’une réduction de l’irradiation.Concernant la régulation des limites de doses, deux travaux s’intéressent à leur variabilité en fonction de la taille des échantillons en TDM et en radiographie. En se conformant aux petits échantillons exigés dans les enquêtes périodiques, les résultats sont très variables. Les conditions exigées sont dès lors inadéquates pour proposer des optimisations de doses et il convient d’augmenter le nombre d’examens exigés dans ces enquêtes.En perspective, les guidelines doivent continuer à être améliorés afin d’en accroître l’adhésion des prescripteurs. Les nouvelles technologies qui visent à réduire l’irradiation doivent être validées avant d’être mises en œuvre. Les enquêtes périodiques des doses délivrées en TDM et en radiographie doivent être basées sur de plus grands nombres d’examens.Doctorat en Sciences médicales (Médecine)
info:eu-repo/semantics/nonPublished
10
Robisch, Katherine A. « Search Engine Optimization : A New Literacy Practice ». University of Dayton / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1394533925.
Texte intégral
11
Alwassouf, Sulaf. « Seroepidemiology of emerging sandly-borne phleboviruses : technical optimization and seroprevalence studies in the Mediterranean basin ». Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM5015/document.
Texte intégralRésumé :
Parmi les phlébovirus (famille des Bunyaviridae, genre Phlebovirus), ceux qui sont transmis par les phlébotomes de l'Ancien Monde sont largement distribués dans le bassin méditerranéen. Les infections humaines causées certains de ces phlébovirus sont connues depuis longtemps, mais elles restent tout de même négligées en médecine en raison de l'absence de données épidémiologiques solides (problème des réactions croisées) et d'outils de diagnostic rapides et fiables.La première partie de cette thèse a été consacrée à l'optimisation d'un test de neutralisation du virus pour étudier la séroprévalence de 5 virus, et leur capacité respective à infecter les humains et les animaux.La deuxième partie visait à mesurer la séroprévalence de phlébovirus appartenant aux 3 complexes antigéniques transmis par les phlébotomes dans le bassin méditerranéen (Sandfly fever Naples, Sandfly fever Sicilian et Salehabad). Ces études ont été menées sur des sérums de chiens et de chats en Tunisie, Portugal, Grèce/Chypre.La troisième partie a montré la capacité de virus récemment découverts dans le serocomplexe Salehabad (Adana et Medjerda valley virus) à infecter l'homme et les animaux traduisant un potentiel pathogène à explorer par des études spécifiques.La dernière partie a démontré la présence du virus Toscana en Kabylie (Algérie du Nord), et l'exposition extrêmement élevée des populations humaines vivant dans la région, avec des prévalence 10 fois plus élevées que dans les régions les plus à risque du sud-est de la FranceSandfly-borne phleboviruses, transmitted by phlebotomine sandflies and belonging to the genus Phlebovirus within the Bunyaviridae family are widely distributed in Mediterranean basin. Human diseases caused by infection with phleboviruses are known for a long time, but they are still neglected due to the lack of epidemiological knowledge and of diagnostic tools.The first part of this thesis was dedicated to optimize a comparative virus neutralisation test to study the seroprevalence of selected phleboviruses and to assess the capacity of each virus to infect humans and animals. The second part aimed to estimate the epidemiology of phlebovirus serocomplexes (Naples, Sicilian and Salehabad) in Mediterranean basin. In order to update the presence of these viruses and their capacity to infect animals, several serologic studies were carried out on animal blood samples in Tunisia, Portugal, Greece and Cyprus. The results demonstrated that the phleboviruses belonging to 3 distinct groups are widely circulating and capable to infect non human vertebrate at different rates in studied countries.The third part showed the capacity of newly discovered viruses (Adana and Medjerda valley viruses) belonging to Salehabad serocomplex to infect human and animal at low and high rates, respectively. These findings suggest the medical and veterinary importance of these viruses. The last part of this thesis, confirm the circulation of Toscana virus by seroprevelance study which was carried out in local population in north Algeria where Toscana virus was isolated recently. The high rate of circulate suggests that Toscana virus is heavily affecting sandfly-exposed people in Algeria
12
Atiah, Frederick Ditliac. « Dynamic multi-objective optimization for financial markets ». Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/79571.
Texte intégralRésumé :
The foreign exchange (Forex) market has over 5 trillion USD turnover per day. In addition,
it is one of the most volatile and dynamic markets in the world. Market conditions
continue to change every second. Algorithmic trading in Financial markets have received
a lot of attention in recent years. However, only few literature have explored the applicability
and performance of various dynamic multi-objective algorithms (DMOAs) in the
Forex market. This dissertation proposes a dynamic multi-swarm multi-objective particle
swarm optimization (DMS-MOPSO) to solve dynamic MOPs (DMOPs). In order to
explore the performance and applicability of DMS-MOPSO, the algorithm is adapted for
the Forex market. This dissertation also explores the performance of di erent variants
of dynamic particle swarm optimization (PSO), namely the charge PSO (cPSO) and
quantum PSO (qPSO), for the Forex market. However, since the Forex market is not
only dynamic but have di erent con
icting objectives, a single-objective optimization
algorithm (SOA) might not yield pro t over time. For this reason, the Forex market was
de ned as a multi-objective optimization problem (MOP). Moreover, maximizing pro t
in a nancial time series, like Forex, with computational intelligence (CI) techniques is
very challenging. It is even more challenging to make a decision from the solutions of a
MOP, like automated Forex trading. This dissertation also explores the e ects of ve decision
models (DMs) on DMS-MOPSO and other three state-of-the-art DMOAs, namely
the dynamic vector-evaluated particle swarm optimization (DVEPSO) algorithm, the
multi-objective particle swarm optimization algorithm with crowded distance (MOPSOCD)
and dynamic non-dominated sorting genetic algorithm II (DNSGA-II). The e ects
of constraints handling and the, knowledge sharing approach amongst sub-swarms were
explored for DMS-MOPSO. DMS-MOPSO is compared against other state-of-the-art
multi-objective algorithms (MOAs) and dynamic SOAs. A sliding window mechanism
is employed over di erent types of currency pairs. The focus of this dissertation is to
optimized technical indicators to maximized the pro t and minimize the transaction
cost.
The obtained results showed that both dynamic single-objective optimization (SOO)
algorithms and dynamic multi-objective optimization (MOO) algorithms performed better
than static algorithms on dynamic poroblems. Moreover, the results also showed that
a multi-swarm approach for MOO can solve dynamic MOPs.Dissertation (MEng)--University of Pretoria, 2019.
Computer Science
MSc
Unrestricted
13
???????, ? ?, et E. Smyrnov. « ????????? ? ??????????? ? ??????????? ? ??????? ? ????? ? ??????????????? ? ?????????? ? » Thesis, ????, 2017. http://eztuir.ztu.edu.ua/123456789/5970.
Texte intégralRésumé :
?????????? ?? ???????? ????????? ??????? ????????? ????????? ???? ?? ????????????? 05.22.20 ? ???????????? ?? ?????? ??????? ??????????. ? ???????????? ????????? ????????????? ???????????, ???????, 2017.
?????????? ?????????? ???????? ??????? ?? ??????? ?????????? ????????? ?? ????????? ?????????? ???????? ???????????????? ???????????. ?????????? ????????? ???????? ? ????? ???? ?????????? ??????? ?? ??????? ?????????????? ????????? ???????? ?????? ?? ?????????-????????? ???? ????????????????? ????????????. ?????????? ??????????? ?????? ?? ???????? ??????????? ????????? ?????????? ????????, ??? ?????????? ?? ?????????????. ???????????? ??????? ??????? ?????????? ??????????? ????????? ?? ?????? ?????????? ????????? ? ??????????? ????????? ?????????? ?? ??????????? ?????????? ??????? ??????????? ???????? ?? ??????? ????????? ????????. ?????????? ????????? ???????????? ??? ?????????? ??????????? ????????? ?? ??????????? ???????. ?????????? ???????? ?????????? ????????? ?????????? ???????? ???????????????? ???????????.
?? ?????? ?????????????? ??????? ?? ???????? ????????? ????????? ?? ??????? ?????????? ???????? ?? ??????????????, ??? ?????????? ????????? ????????? ??????, ???????????? ?????? ?? ?????????????????????? ????????????.Thesis for PhD degree in technical sciences on specialty 05.22.20 ? Operation and repair of transportation vehicles. ? Zhytomyr State Technological University, Zhytomyr, 2017. The thesis is dedicated to the development of models and methods for the determination of strategies and variants for technical development of motor transport companies. There had been researched the technical development of motor transport enterprises from the point of view of a system approach as the system of connections for renovation of the rolling stock as well as the production and technical base of the motor transport company. There had been developed the mathematical model and an algorithm for simulating variants for technical development, which take into account these connections. There had been backgrounded the objective function for determining the best variant based on a technical indicator ? the coefficient of technical readiness and economic indicator ? the net present value and payback period. There had been developed a software for facilitation of variants simulation following the developed model. There had been also developed the method for determining variants of technical development of motor transport enterprises. On the basis of the suggested models and the methods, there had been determined a technical development strategy and variant for private enterprise ?Autotranscom? that allow to improve the technical level, efficiency and competitiveness of the enterprise.
14
Nasution, Indera Sakti [Verfasser]. « Technical optimization of a laser marking process of banana fruits and poinsettia bracts / Indera Sakti Nasution ». Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2018. http://d-nb.info/1176105132/34.
Texte intégral
15
Kováčik, Juraj. « Využití umělé inteligence na kapitálových trzích ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2014. http://www.nusl.cz/ntk/nusl-224421.
Texte intégral
16
Teeples, Allan W. « An Evolutionary Approach to Optimization of Compound Stock Trading Indicators Used to Confirm Buy Signals ». DigitalCommons@USU, 2010. https://digitalcommons.usu.edu/etd/820.
Texte intégralRésumé :
This thesis examines the application of genetic algorithms to the optimization of a composite set of technical indicator filters to confirm or reject buy signals in stock trading, based on probabilistic values derived from historical data. The simplicity of the design, which gives each filter within the composite filter the ability to act independently of the other filters, is outlined, and the cumulative indirect effect each filter has on all the others is discussed. This system is contrasted with the complexity of systems from previous research that attempt to merge several indicator filters together by giving each one a weight as a percentage of the whole, or which build a decision tree based rule comprised of several indicators.
The detrimental effects of short-term market fluctuations on the effectiveness of the optimization are considered, and attempts to mitigate these effects by reducing the length of the optimization interval are discussed.
Finally, the optimized indicators are used in simulated trading, using historical data. The results from the simulation are compared with the annual returns of the NASDAQ 100 Index on a yearly basis over a period of four years. The comparison shows that the composite indicator filter is proficient enough at filtering out inferior buy signals to substantially outperform the NASDAQ 100 Index during each year of the simulation.
17
PIERUCCIONI, DIEGO. « Analysis of geological parameters for optimization of geothermal probes applied to heat pumps : individuation of a technical and procedural iter ». Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266761.
Texte intégralRésumé :
The geothermal heat pump systems have been developed in Italy only during the last few years and today only some regions are investing in this field. In particular, the Tuscany Region and the Autonomus Bolzano Province have promoted the study of these systems with the objective of being able to promote and to disclose in the time this technology. A fundamental aspect for a oculata planning and a greater knowledge of the real predisposition of the territory to the installation is sure the acquaintance of the specification of the geological, geophysical, geotechnical and hidrogeological systems and the parameters that enter at stake. The fundamental parameter in a position to discriminating from a point of view not only economic but also of real thermal yield is the thermal conductivity that the determinated site is able to offer.
This research examines the essential elements that they characterize a system of geothermal heat pump system. It has been to such respect important to study at first the various type of systems from a technical-engineering point of view that of principle operation. In a second phase, the parameters were characterized to consider in phase of thermal characterization, therefore the study of the heat conductivity, the transmission of heat between probe and land, the thermal stability and the thermal behavior of the ground. In particular, regarding the study of the heat conductivity, in the Capitol 3 are given the tools used for the acquisition of such parameter through investigations in the laboratory and in situ.
Successively the normatives elements that regulate the phases of authorization were characterized and analyzed, afterwards planning and installation of the heat pumps systems in the various international and national contexts were considered. A panoramic pre-emptive of the normative picture of the Nations and Regions was drawn to the vanguard in the field of geothermal energy to low and the lowest entalpy. This was dictated by the requirement to define the problematic ones met from the agencies that have legislated in matter and to put of in evidence virtues and criticality. The checks carried out both in terms of legal and procedural provided an
inspiration for the creation of authorization processes and procedures for the installation of various types of geothermal heat pump systems in various geological contexts, in order to assess the possible impacts that these systems can cause on the environmental matrices. Central part of the research project is the study of the heat conductivity, parameter key for the development of a useful cartography in this field. It was decided to perform a literature search of that parameter, in order to process and then compare the data of thermal conductivity obtained from detailed investigation carried out in a pilot site and found through the stratigraphy. In fact, nowadays the available data measured on lithologies of the Italian territory are few and hard to find. The literature research has allowed later to thermally classify the lithostratigraphic units of the geological legend of Sardinia Region, in scale 1:10000, one of the few regions to boast of an updated geological territorial Continuum. The performed research is based on the possibility of drawing up maps of the thermal conductivity from the investigation and trying different methods, ultimately, to compare the two approaches. The first method concerned a detailed investigation of the pilot site located in proximity of Lago Baratz (Municipality of Sassari) through a geological and hidrogeological framework, a pedologic survey and at last, investigations of geoelectrical type. The detailed study has afforded to frame the site potentially interesting to the installation of a system being afforded to characterize from a thermal point of view the area. Therefore, it has been possible to calculate the value of thermal yield for 1800 – 2400 hours of operation of the system in modality cooling and heating.
By means of the second method of calculation, it was considered appropriate to disclose a test personally conducted in the territory of the Arezzo Province. Thus, it is reported below an example of processing of the data of thermal conductivity from the stratigraphic information. Giving the high number of information (about 12566 stratigraphic data points), it was decided to perform a first test in order to verify and consolidate the processing procedure.
In the Chapter 7 all the passages executed for the elaboration of the thermal conductivity data from the stratigraphic information for the provincial territory are illustrated. Three maps for the depths of interest of 30, 60 and 100 meters Were elaborated. Successively the respective papers of the errors were calculated, allowing to divide the province territory in areas for which it can be identified different planes of address to be followed in the process of thermal characterization. The last chapter contains a possible synthesis of a procedural iter initially for defining the parts that enter as stake in phase of realization of a system. They will follow some detailed lists reported to the criteria to follow, in sensitive areas, for the study and the control from a thermal point of view, of a potentially apt site to the installation of a system The entire research aims to set an example as well as the application of geological information at a scale of detail, the stratigraphic information and spread knowledge of the parameters involved can be combined to create thematic maps useful for public authorities and citizens.
18
Chinellato, Gianpietro <1986>. « Optimization of Semy-Dry anaerobic digestion for a wider diffusion of the Food Waste treatment for energy recovery. Technical and Economic evaluation ». Doctoral thesis, Università Ca' Foscari Venezia, 2021. http://hdl.handle.net/10579/20602.
Texte intégralRésumé :
Currently, large plants are the most favoured approach for the anaerobic treatment of the organic fraction of municipal solid waste (OFMSW). However, centralised solutions imply certain limitations which prevent large-scale implementation of the anaerobic digestion (AD) of food waste for energy recovery. As a result, we are digesting less than 5% of organic waste both in Europe and the USA even today. Pursuing the criteria for maximising the balance between profit and impacts, an innovative layout with the ultimate goal of promoting the use of small, easy-to-operate AD plants is proposed. The purpose of the research is to investigate the better way to apply the Semi-Dry approach to the OFMST treatment, with fermenters that can manage to treat the biowaste as it is (feeding with TS>20-25%), with no dilution or any co-substrate addition needed. A source-separated OFMSW (SS-OFMSW) was treated in a mesophilic plug flow reactor by applying an atypical combination of conditions such as high SS-OFMSW solid content (214.5 g·kg-1), high organic loading rate (6.2 kg VS·m-3·d-1), and no dilution or co-substrate addition. A suitable and an efficient mixing system is essential to control the process. Accordingly, the process was stable in a single-stage reactor, in the absence of digestate recirculation, obtaining specific gas production of 0.67 m3·kg-1 VS in terms of biogas and 0.41 m3·kg-1 VS in terms of methane. High reactor volume exploitation and small plant construction were feasible, reaching a gas production rate of 4.5 m3·m-3 d-1. Costs in terms of capital and operating expenditure are estimated, and an economic evaluation is carried on to study the economic sustainability of full-scale installation at different plant sizes.
19
Olson, Erik Davin. « Conceptual Design and Technical Risk Analysis of Quiet Commercial Aircraft Using Physics-Based Noise Analysis Methods ». Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11486.
Texte intégralRésumé :
An approach was developed which allows for design studies of commercial aircraft using physics-based noise analysis methods while retaining the ability to perform the rapid tradeoff and risk analysis studies needed at the conceptual design stage. A prototype integrated analysis process was created for computing the total aircraft EPNL at the Federal Aviation Regulations Part 36 certification measurement locations using physics-based methods for fan rotor-stator interaction tones and jet mixing noise. The analysis process was then used in combination with design of experiments to create response surface equations (RSEs) for the engine and aircraft performance metrics, geometric constraints and takeoff and landing noise levels. In addition, Monte Carlo analysis was used to assess the expected variability of the metrics under the influence of uncertainty, and to determine how the variability is affected by the choice of engine cycle. Finally, the RSEs were used to conduct a series of proof-of-concept conceptual-level design studies demonstrating the utility of the approach. The study found that a key advantage to using physics-based analysis during conceptual design lies in the ability to assess the benefits of new technologies as a function of the design to which they are applied. The greatest difficulty in implementing the physics-based analysis proved to be the generation of design geometry at a sufficient level of detail for high-fidelity analysis.
20
Horneber, Tobias [Verfasser], et Antonio [Akademischer Betreuer] Delgado. « Thermo-fluid dynamic characterization and technical optimization of structured open-cell metal foams by means of numerical simulation / Tobias Horneber. Gutachter : Antonio Delgado ». Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://d-nb.info/1075480558/34.
Texte intégral
21
Pinheiro, Ãlvaro Daniel Teles. « Technical and economic feasibility of ethanol production in cashew apple juice from Saccharomyces cerevisiae flocculant ». Universidade Federal do CearÃ, 2015. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=15056.
Texte intégralRésumé :
nÃo hÃGiven the current situation in which it is the global energy sector, biofuels have been gaining more space, earning special attention the ethanol, which has shown growing demands. From this scenario, the objective of this work was to develop a bioprocess technically and economically practicable for ethanol production from cashew apple juice, using yeast Saccharomyces cerevisiae (CCA008) genetically modified containing a flocculent gene (FLO5α). The work was divided in 4 four stages that are linked throughout the study. In the first stage was evaluated the temperature influence (26, 30, 34, 38 and 42ÂC), the inoculum concentration (3, 5, 8 and 10 g.L-1) and the stirring speed (80, 150, 300, 490, 650 and 800 rpm), so it could be determined the best conditions to maximize ethanol production. It was observed that the temperature operating parameter, the initial cellular concentration, substrate concentration and stirring exerted influence on the alcoholic fermentation of the cashew apple juice. The best performance to the fermentative process (98,8 %) happened when the process was conducted at 34 ÂC, under 150 rpm stirring and 5 g.L-1 of initially cell concentration. The second stage was intended to describe the process efficiency in face of the operation parameters evaluated in fermentation. To this end, it was successfully used statistic models to describe the interaction between the initial substrate concentration, temperature, initial cell concentration, stirring and their possible effects on the yield. The model that best fit the experimental data was used to obtain the optimum conditions from the operating variables, indicating the following conditions as great: substrate concentration (S0) of 102 g.L-1, temperature (T) at 34ÂC, inoculum concentration (X0) of 5 g.L-1 and stirring (Agit) of 140 rpm, predicting a 98,80 % of efficiency. In the third stage was studied ethanol production in optimum conditions, being used to implement the scale up process, in which the data obtained in a 1L bioreactor batch were used to predict the fermentation behavior in a 14L bioreactor batch, using the volumetric power consumption as a parameter to scale-up. Using this factor as being of 10,67 kW/m3, it was possible to calculate the fermenter stirring power in a 14 times bigger volume, as well as foresee which stirring would be necessary so the fermentation can occur, similarly as in the lower volume fermenter. Results showed that yield from the 14L bioreactor were satisfactory, having a small difference (96,56 % Â 0,3 %) between yield from the 1L bioreactor (98,80 % Â 1,6 %). The fourth and last stage was rated the technical and economic viability of the process. Analyzing results, it is possible to say the industrial process here proponed has shown technical viability, since the value obtained for the process yield (68 L/ton), was close to sugar cane fermentation (61 â 72 L/ton). However, it did not show economic viability since the industrial unity provides negative cash flow (- R$ 93.840.874) in the end of 10 years that was analyzed. So, new studies must be conducted in order to make this process economically viable, this possibility being observed in various scenarios generated in analyzing the sensibility of process, which presents possible economically viable settings.
Diante da conjuntura atual em que se encontra o setor energÃtico mundial, os biocombustÃveis vÃm ganhando cada vez mais espaÃo, merecendo atenÃÃo especial o etanol, o qual apresenta demanda crescente. A partir desse cenÃrio, o objetivo do presente trabalho foi desenvolver um bioprocesso tecnicamente e economicamente viÃvel para produÃÃo de etanol a partir do suco de caju, utilizando levedura Saccharomyces cerevisiae (CCA008) geneticamente modificada contendo gene floculante (FLO5α). O trabalho foi dividido em 4 quatro etapas que se interligam durante todo o estudo. Na primeira etapa foi avaliada a influÃncia da temperatura (26, 30, 34, 38 e 42ÂC), da concentraÃÃo de inÃculo (3, 5, 8 e 10 g.L-1) e da velocidade de agitaÃÃo (80, 150, 300, 490, 650 e 800 rpm) para que as condiÃÃes Ãtimas que maximizam a produÃÃo de etanol, fossem determinadas. Observou-se que os parÃmetros operacionais de temperatura, concentraÃÃo celular inicial, concentraÃÃo de substrato e agitaÃÃo exerceram influÃncia na fermentaÃÃo alcoÃlica do suco de caju. O melhor rendimento para o processo fermentativo (98,8 %) ocorreu quando o processo foi conduzido a 34 ÂC, sob agitaÃÃo de 150 rpm e contendo incialmente 5 g.L-1 de cÃlulas. Na segunda etapa, pretendeu-se descrever o rendimento do processo em funÃÃo dos parÃmetros operacionais avaliados na fermentaÃÃo. Para tanto, utilizaram-se, com sucesso, modelos estatÃsticos para descrever a interaÃÃo entre a concentraÃÃo inicial de substrato, temperatura, concentraÃÃo celular inicial, agitaÃÃo e seus possÃveis efeitos no rendimento. O modelo que melhor se ajustou aos dados experimentais foi utilizado na obtenÃÃo das condiÃÃes Ãtimas das variÃveis operacionais, indicando as seguintes condiÃÃes como Ãtimas: concentraÃÃo de substrato (S0) de 100 g.L-1, temperatura (T) igual a 34 ÂC, concentraÃÃo de inÃculo (X0) igual a 5 g.L-1 e agitaÃÃo (Agit) de 140 rpm, predizendo um rendimento de 98,80 %. Na terceira etapa, realizou-se o estudo da produÃÃo de etanol nas condiÃÃes Ãtimas, sendo as mesmas utilizadas para implementar a ampliaÃÃo de escala do processo, na qual os dados obtidos em biorreator batelada de 1L foram utilizados para predizer o comportamento da fermentaÃÃo em biorreator batelada de 14L, utilizando a potÃncia por unidade de volume como parÃmetro de scale-up. Utilizando tal fator como sendo de 10,67 kW/m3, foi possÃvel calcular a potÃncia de agitaÃÃo do fermentador de volume 14 vezes maior, assim como prever qual agitaÃÃo seria necessÃria para que a fermentaÃÃo ocorresse de forma semelhante à ocorrida no fermentador de menor volume. Os resultados mostraram que o rendimento obtido no biorreator de 14L foi satisfatÃrio, apresentando uma pequena diferenÃa (96,56 %  0,3 %) para o biorreator de 14L em relaÃÃo ao rendimento obtido para o de 1L (98,80 %  1,6 %). Como quarta e ultima etapa, avaliou-se a viabilidade tÃcnica e econÃmica do processo. Analisando os resultados obtidos, à possÃvel afirmar que o processo industrial proposto apresentou viabilidade tÃcnica, uma vez que o valor obtido para o rendimento do processo (68 L/ton), foi prÃximo ao da fermentaÃÃo da cana-de-aÃÃcar (61 â 72 L/ton). Contudo, o mesmo nÃo apresentou viabilidade econÃmica, uma vez que a unidade industrial proporciona um fluxo de caixa negativo (- R$ 93.840.874) ao final dos 10 anos em que foi analisado. Assim, novos estudos devem ser realizados com o intuito de tornar tal processo economicamente viÃvel, sendo esta possibilidade observada nos vÃrios cenÃrios gerados na anÃlise de sensibilidade do processo, o qual apresenta possÃveis configuraÃÃes economicamente viÃveis.
22
Papacostantis, Evangelos. « Competitive co-evolution of trend reversal indicators using particle swarm optimisation ». Diss., University of Pretoria, 2010. http://hdl.handle.net/2263/23929.
Texte intégralRésumé :
Computational Intelligence has found a challenging testbed for various paradigms in the financial sector. Extensive research has resulted in numerous financial applications using neural networks and evolutionary computation, mainly genetic algorithms and genetic programming. More recent advances in the field of computational intelligence have not yet been applied as extensively or have not become available in the public domain, due to the confidentiality requirements of financial institutions. This study investigates how co-evolution together with the combination of par- ticle swarm optimisation and neural networks could be used to discover competitive security trading agents that could enable the timing of buying and selling securities to maximise net profit and minimise risk over time. The investigated model attempts to identify security trend reversals with the help of technical analysis methodologies. Technical market indicators provide the necessary market data to the agents and reflect information such as supply, demand, momentum, volatility, trend, sentiment and retracement. All this is derived from the security price alone, which is one of the strengths of technical analysis and the reason for its use in this study. The model proposed in this thesis evolves trading strategies within a single pop- ulation of competing agents, where each agent is represented by a neural network. The population is governed by a competitive co-evolutionary particle swarm optimi- sation algorithm, with the objective of optimising the weights of the neural networks. A standard feed forward neural network architecture is used, which functions as a market trend reversal confidence. Ultimately, the neural network becomes an amal- gamation of the technical market indicators used as inputs, and hence is capable of detecting trend reversals. Timely trading actions are derived from the confidence output, by buying and short selling securities when the price is expected to rise or fall respectively. No expert trading knowledge is presented to the model, only the technical market indicator data. The co-evolutionary particle swarm optimisation model facilitates the discovery of favourable technical market indicator interpretations, starting with zero knowledge. A competitive fitness function is defined that allows the evaluation of each solution relative to other solutions, based on predefined performance metric objectives. The relative fitness function in this study considers net profit and the Sharpe ratio as a risk measure. For the purposes of this study, the stock prices of eight large market capitalisation companies were chosen. Two benchmarks were used to evaluate the discovered trading agents, consisting of a Bollinger Bands/Relative Strength Index rule-based strategy and the popular buy-and-hold strategy. The agents that were discovered from the proposed hybrid computational intelligence model outperformed both benchmarks by producing higher returns for in-sample and out-sample data at a low risk. This indicates that the introduced model is effective in finding favourable strategies, based on observed historical security price data. Transaction costs were considered in the evaluation of the computational intelligent agents, making this a feasible model for a real-world application. CopyrightDissertation (MSc)--University of Pretoria, 2010.
Computer Science
unrestricted
23
Andrew, Brandon E. « DETERMINATION OF STRATEGIC PRIORITIES FOR A MICROBIOME COMPANY THROUGH ANALYSIS OF TECHNICAL CAPABILITIES AND CURRENT MARKET LANDSCAPES ». Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1586527376213742.
Texte intégral
24
Duarte, Dorivaldo Costa. « Análise, dimensionamento e design de um sistema fotovoltaico para um edifício de serviços ». Master's thesis, Universidade de Évora, 2019. http://hdl.handle.net/10174/26502.
Texte intégralRésumé :
No âmbito deste plano de trabalhos para a dissertação de mestrado pretende-se analisar e conceber um sistema fotovoltaico para as necessidades energéticas de um consumidor do sector de serviços. Neste contexto, após uma análise dos perfis de consumo do edifício realizar-se-á um enquadramento da instalação, mediante as condições apresentadas pelo edifício onde se pretende incorporar o sistema fotovoltaico supracitado, segundo o conceito dos BAPV. Este sistema será concebido com o propósito de aproveitar o facto do horário laboral/ ocupação do edifício coincidir justamente com o perfil diário de disponibilidade de radiação solar, este não contempla armazenamento de energia e nem tracking. Conseguiu-se simular e dimensionar a instalação fotovoltaica adequada às necessidades energéticas do edifício, levando em conta todos os constrangimentos verificados no local. Esta instalação fotovoltaica foi projetada tendo em consideração a preservação estética e arquitetónica do edifício, procurando sempre a solução que melhor respondia às necessidades energéticas do edifício; Abstract: Analysis, sizing and design of a photovoltaic system for a building services This work plan for the master dissertation aims to analyse and design a photovoltaic system for the energy needs of a service sector consumer. In this context, after an analysis of the building’s consumption profiles, the installation will be framed according to the conditions presented by the building where the above-mentioned photovoltaic system is to be incorporated, according to the BAPV concept. This system will be designed to take advantage of the fact that the working hours / occupancy of the building coincide precisely with the daily profile of solar radiation availability, this does not include energy storage or tracking. It was possible to simulate and size the photovoltaic installation appropriate to the energy needs of the building, considering all constraints verified on site. This photovoltaic installation was designed considering the aesthetic and architectural preservation of the building, always looking for the solution that best met the building's energy needs.
25
Ondrušová, Denisa. « Technická analýza ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2012. http://www.nusl.cz/ntk/nusl-223537.
Texte intégralRésumé :
This master‘s thesis is focused on creating an application, which would suggest an optimal portfolio of shares from SPAD Stock Market Praha. The application is based on the CAPM model, which is also described in this paper. There is a calculation of securities characteristics and specific portfolio diversification is suggested. The application also allows a user to simulate investments based on his requirements.
26
Krňávek, Jan. « Investiční modely v prostředí finančních trhů ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2017. http://www.nusl.cz/ntk/nusl-319226.
Texte intégralRésumé :
The thesis deals with the optimization of the selected investment portfolio. Solver suggests automated investment model that will use advanced algorithms based on artificial intelligence and principles of technical analysis. Optimization of parameters and verifying the performance of the investment model is realized on historical market data. The result of this thesis is optimized investment model with an emphasis on maximizing profits and stability. The thesis is realized in an environment Python programming language and freely available analytical libraries.
27
Abonaem, Mokhtar [Verfasser], Johannes A. [Akademischer Betreuer] Jehle et Jörg [Akademischer Betreuer] Simon. « Selection, Optimization and Technical Application of Entomopathogenic Nematodes for the Biological Control of Major Insect Pests on Tomato / Mokhtar Abonaem ; Johannes A. Jehle, Jörg Simon ». Darmstadt : Universitäts- und Landesbibliothek, 2021. http://d-nb.info/123741492X/34.
Texte intégral
28
Anders, Gerrit Verfasser], et Wolfgang [Akademischer Betreuer] [Reif. « Self-Organized Robust Optimization in Open Technical Systems : Self-Organization and Computational Trust for Scalable and Robust Resource Allocation under Uncertainty / Gerrit Anders ; Betreuer : Wolfgang Reif ». Augsburg : Universität Augsburg, 2017. http://d-nb.info/1136864318/34.
Texte intégral
29
Givisiez, Arthur Gonçalves. « Technical and economical evaluation of combined cooling, heat and power technology : a brazilian study case considering different consumers ». Universidade Federal de Juiz de Fora (UFJF), 2018. https://repositorio.ufjf.br/jspui/handle/ufjf/7553.
Texte intégralRésumé :
Submitted by Geandra Rodrigues (geandrar@gmail.com) on 2018-09-25T13:55:05Z
No. of bitstreams: 1
arthurgoncalvesgivisiez.pdf: 15097769 bytes, checksum: e434481fde7014f783d8b75137429fba (MD5)Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2018-10-01T18:11:02Z (GMT) No. of bitstreams: 1 arthurgoncalvesgivisiez.pdf: 15097769 bytes, checksum: e434481fde7014f783d8b75137429fba (MD5)
Made available in DSpace on 2018-10-01T18:11:02Z (GMT). No. of bitstreams: 1 arthurgoncalvesgivisiez.pdf: 15097769 bytes, checksum: e434481fde7014f783d8b75137429fba (MD5) Previous issue date: 2018-08-29
O mundo está tentando mudar para um ambiente de energia mais limpa, especialmente no setor de geração de eletricidade, que é responsável por uma grande parcela das emissões de CO2. No Brasil, fontes renováveis são responsáveis por grande parte da geração de eletricidade, mas mudanças atuais no clima brasileiro trouxeram uma necessidade de diversificação na matriz energética. Logo, a geração distribuída é uma boa maneira de diversificar a matriz energética brasileira. Considerando que os sistemas de cogeração se enquadram na geração distribuída, e que os prédios brasileiros necessitam de resfriamento, devido ao clima quente, o uso de cogeração adicionado à um chiler de absorção ou absorção pode ser muito útil. O sistema de trigeração é um processo altamente eficiente, que pode produzir eletricidade, aquecimento e resfriamento a partir da mesma fonte de energia primária. No entanto, existem poucas pesquisas sobre os sistemas de trigeração no Brasil, especialmente em pequena e micro escala. Assim, esta dissertação fará uma avaliação técnica e econômica de sistemas de micro e trigeração para diferentes edifícios sob políticas tarifárias distintas no Brasil. Para tanto, este trabalho otimizará o dimensionamento e o cronograma de despacho mensal dos sistemas de trigeração para cada um dos quatro estudos de caso. Em seguida, avaliará o valor presente líquido máximo (VPL) considerando a variação da taxa de desconto e da taxa de conversão do dólar norte-americano. Na sequência, o índice de dependência da rede (GDI), o payback descontado, o custo nivelado da energia (LCOE) e a razão da energia primária (PER) para os melhores VPLs serão apresentados e analisados. Como resultado, esta dissertação mostrará que as plantas de trigeração podem ser lucrativas e certamente ser uma maneira eficiente de utilização de uma geração distribuída confiável e controlável. Além disso, provará que é possível encontrar situações em que a planta de trigeração possa oferecer uma alta taxa de energia primária (PER), um adequado custo de energia nivelado (LCOE) e, ao mesmo tempo, pode proporcionar economia financeira com tempo de retorno razoável em edifícios brasileiros.
The world is trying to move to a cleaner energy environment, especially on the electricity generation sector, which is responsible for a large share of CO2 emissions. In Brazil,crenewable energy sources are responsible for a great part of the electricity generation, but current changes in the Brazilian climate brought a necessity of diversification on the energy matrix. Then, distributed generation is a good way to diversify the Brazilian power matrix. Considering that cogeneration systems are distributed generation, and Brazilian buildings have need of cooling, due to the warm weather, the use of cogeneration equipped with an absorption or adsorption chiller could be beneficial. The trigeneration system is a highly efficient process, which can produce electricity, heating and cooling from the same primary energy source. However, there are really few researches concerning trigeneration systems in Brazil, especially on small and micro plants. Thus, this thesis will make and provide a technical and economical evaluation of small and micro trigeneration systems to different buildings under distinct tariff policies in Brazil. To do so, this work will optimize the sizing and monthly schedule the dispatch of the trigeneration systems to each one of the four study cases. Then, it will evaluate the maximum net present value (NPV) considering the variation of discount rate and US Dollar conversion rate. In the sequence, the grid dependence index (GDI), the discounted payback, the levelized cost of energy (LCOE) and the primary energy ratio (PER) to the best NPVs will be presented and analysed. As a result, this thesis will show that trigeneration plants can be profitable and can be certainly an efficient way to adopt a reliable and controllable distributed generation. Also, it will prove that it is possible to find situations in which the trigeneration plant can offer a high primary energy ratio, a fair levelized cost of energy, and in the meantime, it can provide financial savings with fair payback time in Brazilian buildings.
30
Watson, Veronica. « Basic system configuration in search engine ». Xavier University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=xavier1545566567119888.
Texte intégral
31
Dotti, Isabella. « Towards molecular medicine:optimization of the methods for gene expression analysis in clinical samples ». Doctoral thesis, Università degli studi di Trieste, 2008. http://hdl.handle.net/10077/2626.
Texte intégralRésumé :
2006/2007The advent of molecular “-omics” technologies enabled an unprecedented view into the inner molecular mechanisms of cancer and enhanced optimism towards a patient-tailored vision of medicine. The successful application of these molecular approaches in the discovery of candidate biomarker has accelerated the shift towards personalization of medicine. Indeed, biomarkers hold great promise for refining our ability to establish early diagnosis and prognosis, and to predict response to therapy. The develoment of clinically useful biomarkers would be impossible without access to human biological specimens and associated patient data, since they complete the molecular information gained from laboratory research. Furthermore, with the advances of sensitive molecular technologies, human bio-specimens can be now successfully used for wide analysis at all molecular levels (DNA, RNA and proteins), in addition to conventional cytologic and histologic investigations. However, despite the hundreds of reports on tumor markers, only a few markers have proven clinically useful. The insufficient experience in clinical application of molecular methods combined with the high complexity of clinical material represent the major obstacles for the development of clinically useful biomarkers. Thanks to the possibility to have access to the fresh and archival samples from the hospital, our laboratory can investigate the potential of technological innovations and the current technical pitfalls directly on clinical material. The work in my thesis is strictly correlated to this activity. In particular, the first part is focused on the technical optimization of molecular methods for gene expression analysis in biological fluids and especially in urine samples. In this context we validated a new experimental kit for total RNA extraction from urine samples and tested the potential of a colorimetric approach for PCR product detection. The major part of the study is focused on the technical optimization of molecular methods for gene expression analysis in archival material. This activity is in step with one of the main objectives of the European project called “Archive tissues: improving molecular medicine research and clinical practice-IMPACTS”, in which my laboratory and other 20 European centres are directly involved. In this phase the comparison of the experiences between laboratories and their active collaboration are essential for a more rapid validation of protocols dedicated to RNA (but also DNA and protein) analysis. In particular, we investigated some molecular aspects involved in the pre-analytical phase (tissue fixation procedures) and analytical phase (RNA extraction, RNA quantification and integrity assessment, qRT-PCR) of tissue processing. The final objective of this activity will be the definition of common technical guidelines for a reliable quantification of molecular biomarkers for diagnosis, prognosis and therapy directly in human archival samples. Finally, my thesis includes the clinical application of molecular methods for the quantification of candidate biomarkers in two archival case studies (a breast cancer and an adrenal gland cancer case study). In the breast cancer case study we showed that a panel of seven genes (involved in different cell pathways) is associated to patients’ survival. The adrenal gland tumor case study is part of a preliminary study about the angiogenetic process in rare human cancers.
1979
32
Regen, Ondřej. « Technická analýza ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2014. http://www.nusl.cz/ntk/nusl-224434.
Texte intégralRésumé :
This master’s thesis deals with automated trading systems based on chosen trading strategies, their testing and inputs optimization. The work begins with a theoretical basis for subsequent practical part, where is the solution process illustrated. In conclusion, final evaluation of results is performed and recommendations for the future are mentioned.
33
Putna, Ondřej. « Termické zpracování odpadů jako klíčový prvek efektivních systémů odpadového hospodářství ». Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-433521.
Texte intégralRésumé :
The dissertation thesis is focused on the issue of energy recovery of waste. It contributes to optimization models developed in the author's workplace in the long term, which serve to simulate material flows in waste management and to search for an optimal waste management strategy. The main objective is to assess the potential for the use of heat produced in waste-to-energy plants as a key factor for the economy of these facilities. The thesis therefore represents an activity on the border of the fields of waste management and heating. Partial mathematical models were developed within the scope, for which it was necessary to collect input data, especially in relation with district heating networks. These models were then used in a comprehensive optimization model describing the integration of waste-to-energy plants with other heat sources. This main model was extended to include the environmental aspect.
34
Malmberg, Olle, et Joakim Wellenstam. « Quantum Portfolio Optimization : a Multi-Level Perspective Study of the Swedish Fund Management Industry ». Thesis, KTH, Industriell ekonomi och organisation (Inst.), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-296676.
Texte intégralRésumé :
In recent years, quantum computers have achieved new levels of sophistication and are by some estimates only a few years from being used in production. A growing body of literature points toward their potential uses within various industries, with the finance industry identified as exceptionally full of prospective applications. One application that has seen recent experimental success is Quantum Portfolio Optimization (QPO), where researchers have successfully mapped the optimization task onto existing quantum hardware. As classical Portfolio Optimization (PO) algorithms often have high computational costs, achieving a quantum speed-up could bring major benefits for various stakeholders. One industry that makes use of PO is fund management. Considering the diversity that exists between funds, with regard to strategy and methods, it is likely that sociological factors play a part in selecting which technical solutions are employed. The interplay between sociological and technical factors will be central to this study, as it investigates the conditions for QPO within the Swedish fund management through a socio-technical perspective. First, semi-structured qualitative interviews are conducted with industry actors and quantum computer stakeholders. This is followed by a two-step thematic analysis, structured on the socio-technical dimensions of Geels’ Multi-Level Perspective (MLP). After coding statements, four key themes are created to describe characteristics of the industry. Second, these themes are analyzed together with the niche of QPO through the lens of System Innovations theories, to evaluate the readiness of QPO and its potential socio-technical effects on the industry. The key findings characterizing the fund management industry are summarized through four themes. In particular, the trade-off between quantitative and qualitative methods, the inadequacy of historical data, the importance of third-party suppliers, and the poorly functioning and rigid competitive landscape are key characteristics. The current state of QPO is not considered to have reached a commercially viable price-to-performance ratio but has built a strong support that will help it improve over time. Furthermore, the results point toward QPO being introduced in a limited fashion, but may over time cause significant disruption, as it contributes to reshaping the socio-technical architecture of the industry.Under de senaste åren har kvantdatorer uppnått nya nivåer av sofistikation och är enligt vissa uppskattningar bara några år från att användas i produktion. Alltmer litteratur pekar ut potentiella användningsområden inom olika branscher och finansbranschen har identifierats som ett område med särskilt stor potential. En applikation som nyligen sett experimentell framgång är 'Quantum Portfolio Optimization' (QPO), där forskare framgångsrikt har översatt och beräknat optimeringsuppgiften på existerande kvantdatorer. Eftersom klassiska portföljoptimeringsalgoritmer ofta är krävande i datorkraft så kan kvantdatorers snabbhet potentiellt ge stora fördelar för olika intressenter. En bransch som använder portföljoptimering är fondförvaltning. Med tanke på den mångfald som finns bland fonder, med avseende på strategi och metoder, är det troligt att sociologiska faktorer spelar en roll i valet av vilka tekniska lösningar som används. Samspelet mellan sociologiska och tekniska faktorer kommer att vara centralt i denna studie, då den ämnar undersöka villkoren förutsättningarna för QPO inom svenska fondindustrin genom ett sociotekniskt perspektiv. Först genomförs halvstrukturerade kvalitativa intervjuer med branschaktörer och kvantdatoraktörer. Detta följs av en tematisk analys i två steg, strukturerad efter de sociotekniska dimensionerna i Geels 'Multi-Level Perspective' (MLP). Baserat på kodning av uttalanden så skapas fyra nyckelteman för att beskriva branschens egenskaper. Sedan analyseras dessa teman tillsammans med nischen, QPO, utifrån perspektiv från systeminnovationsteorier för att utvärdera QPO:s beredskap och dess potentiella sociotekniska effekter på branschen. De viktigaste resultaten som kännetecknar fondindustrin sammanfattas genom fyra teman. I synnerhet är avvägningen mellan kvantitativa och kvalitativa metoder, bristfälligheten i historiska data, betydelsen av tredjepartsleverantörer och det dåligt fungerande och styva konkurrenslandskapet viktiga egenskaper. Det nuvarande läget för QPO anses inte ha nått en kommersiellt lönsam nivå sett till förhållandet mellan pris och prestanda, men nischen har byggt ett starkt stödnätverk som kommer hjälpa den att förbättras över tid. Dessutom pekar resultaten mot att nischteknologin QPO kommer att introduceras i begränsad utsträckning, men kan med tiden ändå komma att orsaka betydande störningar eftersom den bidrar till att omforma branschens socio-tekniska arkitektur.
35
Trutnová, Zuzana. « Daňové odpisy hmotného majetku ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2015. http://www.nusl.cz/ntk/nusl-225031.
Texte intégralRésumé :
This thesis deals with tax depreciation of fixed assets in Czech Republic including comparison with tax depreciation according direction proposal for a Common Consolidated Corporate Tax Base and capital deduction in United Kingdom. This thesis includes description of basic rules of fix assets tax depreciation and analysis of tax optimalization possibilities using tax depreciation in Czech Republic. Information gained in theoretical part is used for formation of methodic manual that is used by corporate tax payers as a guide in tax depreciation setting. In the last part of the thesis, variants of tax depreciation calculation for existing company are stated.
36
Spáčil, Přemysl. « Technická analýza ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2015. http://www.nusl.cz/ntk/nusl-225024.
Texte intégralRésumé :
This master’s thesis is focused on the development, optimization and testing automated trading systems (ATS) using technical analysis. The first part, which describes mainly theoretical background, is followed by the practical part. This section deals with designing workflow for the development of ATS. Outcome of this thesis is portfolio of strategies that can be traded on e-mini markets. Some systems have been designed in Adaptrade Builder using genetic algorithms, while all testing was performed in TradeStation platform.
37
Neveux, Thibaut. « Modélisation et optimisation des procédés de captage de CO2 par absorption chimique ». Thesis, Université de Lorraine, 2013. http://www.theses.fr/2013LORR0266/document.
Texte intégralRésumé :
Les procédés de captage de CO2 par absorption chimique engendrent une importante pénalité énergétique sur la production électrique des centrales à charbon, constituant un des principaux verrous technologiques au déploiement de la filière. L'objectif de cette thèse est de développer et valider une méthodologie à même d'évaluer précisément le potentiel d'un procédé de captage aux amines donné. La phénoménologie de l'absorption chimique a été étudiée en détail et représentée par des modèles à l'état de l'art. Le modèle e-UNIQUAC a été utilisé pour décrire les équilibres chimiques et de phases des solutions électrolytiques et les paramètres du modèle ont été régressés pour quatre solvants. Un modèle hors-équilibre a été utilisé pour représenter le transfert couplé de matière et de chaleur, accéléré par les réactions chimiques. Les modèles ont été validés avec succès sur des données expérimentales d'un pilote industriel et d'un pilote de laboratoire. L'influence des phénomènes sur les efficacités de séparation a été explicitée afin d'isoler les phénomènes les plus impactants. Une méthodologie a alors été proposée pour évaluer la pénalité énergétique, incluant les consommations thermiques et électriques, liée à l'installation d'un procédé de captage sur une centrale à charbon supercritique. Une méthode d'estimation du coût de l'électricité est proposée pour quantifier les dépenses opératoires et d'investissement d'un tel procédé. L'environnement de simulation et d'évaluation de procédés obtenu a ensuite été couplé à une méthode d'optimisation afin de déterminer les paramètres opératoires et les dimensions des équipements maximisant les performances énergétiques et économiquesCO2 capture processes by chemical absorption lead to a large energy penalty on efficiency of coal-fired power plants, establishing one of the main bottleneck to its industrial deployment. The objective of this thesis is the development and validation of a global methodology, allowing the precise evaluation of the potential of a given amine capture process. Characteristic phenomena of chemical absorption have been thoroughly studied and represented with state-of-the-art models. The e-UNIQUAC model has been used to describe vapor-liquid and chemical equilibria of electrolyte solutions and the model parameters have been identified for four solvents. A rate-based formulation has been adopted for the representation of chemically enhanced heat and mass transfer in columns. The absorption and stripping models have been successfully validated against experimental data from an industrial and a laboratory pilot plants. The influence of the numerous phenomena has been investigated in order to highlight the most limiting ones. A methodology has been proposed to evaluate the total energy penalty resulting from the implementation of a capture process on an advanced supercritical coal-fired power plant, including thermal and electric consumptions. Then, the simulation and process evaluation environments have been coupled with a non-linear optimization algorithm in order to find optimal operating and design parameters with respect to energetic and economic performances
38
Babič, Vojtěch. « Návrh automatického obchodního systému na devizových trzích s využitím fraktální geometrie ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2016. http://www.nusl.cz/ntk/nusl-254205.
Texte intégralRésumé :
The main focus of the thesis are approaches to technical analysis, trading systems and it summarizes interesting findings, according to which a FOREX automated trading system was designed and implemented. Optimization and testing were a prerequisite for a real-world deployment, so the automated trading system was tested on historical data and some of its input parameters were optimized for maximum stability and profit.
39
Polanský, Jan. « Návrh automatického obchodního systému pro měnový trh ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2016. http://www.nusl.cz/ntk/nusl-254259.
Texte intégralRésumé :
The master’s thesis deals with trading the currency market. The aim of thesis is the creation of an automated trading system based on technical analysis. This thesis is divided into several parts. The theoretical aspects and analysis of current situation are followed by automated trading system proposal. The system is designed on basis of technical indicators and tested on historical data and then optimized.
40
Lima, Juliana Benoni Arruda. « Otimização de sistema de aquecimento solar de água em edificações residenciais unifamiliares utilizando o programa TRNSYS ». Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-03032004-153752/.
Texte intégralRésumé :
Os sistemas de aquecimento solar de água têm sido amplamente utilizados no Brasil para uso doméstico em residências unifamiliares, aproveitando a energia potencial da água do reservatório superior e o fenômeno da termossifonagem para a circulação da água quente. Entretanto estes sistemas de aquecimento de água normalmente são dimensionados através de tabelas fornecidas pelos fabricantes que indicam o número de placas em função do tamanho da família e do número de pontos de utilização de água quente. Esse dimensionamento é muito mais baseado na intuição e experiência dos fabricantes do que em dados científicos. Por isso este trabalho desenvolveu um modelo de otimização para projetos de sistemas de aquecimento solar de água, utilizando uma rotina de simulação numérica em longo prazo em regime transiente. O dimensionamento otimizado fornece a inclinação e a área da placa coletora que resultam no mínimo custo ao longo da vida útil do equipamento. Este custo engloba gastos com a instalação, manutenção e uso de energia auxiliar. O procedimento computacional foi executado com características específicas do projeto, tais como:condições climáticas locais, perfil de demanda de água quente, orientação da placa coletora e a temperatura desejada para o armazenamento da água quente. Foi estudado um sistema de aquecimento solar da água por termossifão com placas coletoras planas para o clima de São Paulo. Este modelo busca facilitar o dimensionamento dos sistemas de aquecimento solar de água para os projetistas, nas condições reais de cada projeto.Solar water heating systems have been widely used in Brazil for domestic purposes in single-family residences, taking advantage of the potential energy of the water of the superior reservoir and the phenomenon of the termosyphon for the circulation of the hot water. However these solar water heating systems are usually design through tables supplied by the manufacturers that indicate the number of flat plates collectors in function of the size of the family and of the number of points of use of hot water. That design is much more based on the intuition and on the manufacturers experience than in scientific data. Therefore this work has developed an optimization model for projects of solar water heating systems, using a routine of a long-period numeric simulation in flow transient. The optimized design supplies the inclination and the area of the flat plate collector that results in the minimum cost over the equipments lifetime. This cost includes expenses with the installation, maintenance and use of auxiliary energy. The computational procedure was executed with specific characteristics of the project, such as: local climatic conditions, profile of the hot waters demand, orientation of the flat plate collector and the temperature wanted for the storage of the hot water. It was studied a solar water heating system by termosyphon with flat plate collector for the climate of São Paulo. This model search to facilitate the design of the solar water heating systems for the designers, of each projects real conditions.
41
Novák, Tomáš. « Optimalizace investičních strategií pomocí genetických algoritmů ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2015. http://www.nusl.cz/ntk/nusl-224983.
Texte intégralRésumé :
This thesis is focused on the design and optimization of automated trading system, which will be traded in FOREX. The aim is to create a business strategy that is relatively safe, stable and profitable. Optimization and testing on historical data are a prerequisite for the deployment into real trading.
42
Kundračík, Roman. « Návrh a optimalizace obchodní strategie na platformě MetaTrader ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2016. http://www.nusl.cz/ntk/nusl-241558.
Texte intégralRésumé :
This Master’s thesis deals with implementation of an automated trading system for application in the currency market. The resulted system is tested and optimized on historical data. Robustness of this strategy is verified by testing on another currency pair and a different timeframe. Efficiency of the system is compared before and after optimization. Created trading system is profitable in all environments which it was tested on.
43
Bagherpour, Raheb [Verfasser]. « Technical and economical optimization of surface mining processes : development of a data base and a program structure for the computer based selection and dimensioning of equipment in surface mining operations / vorgelegt von Raheb Bagherpour ». [Clausthal-Zellerfeld] : [Univ.-Bibliothek], 2007. http://d-nb.info/986102261/34.
Texte intégral
44
Jenke, Marcus, Karoline Binder et Thomas Maier. « Methode zur Verbesserung der Usability durch gezielte Förderung mentaler Modelle ». Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-223912.
Texte intégralRésumé :
Das Potenzial mentaler Modelle zur Entwicklung benutzergerechter, technischer Systeme wurde bereits in zahlreichen Studien aufgezeigt. Jedoch existieren noch immer nur wenige konkrete Methoden zur Nutzung mentaler Modelle im Zuge der Produktentwicklung. Diese Arbeit stellt daher einen konkreten Methodenansatz vor, anhand dessen es Entwicklern ermöglicht werden kann, Optimierungspotenziale mit Hilfe der mentalen Modelle zu identifizieren und diese zu beeinflussen. Dazu werden verschiedene Werkzeuge definiert, die gezielt Einfluss auf die individuelle und kollektive Modellbildung der Nutzer nehmen. In einem Versuch wird der Einfluss dieser Werkzeuge bei visueller Informationsübertragung anhand eines Defibrillators untersucht. Mithilfe eines Interface-Mock-ups werden verschiedene Use Cases im Rahmen einer erweiterten User-Interface-Prototyping-Untersuchung durchlaufen. Die Auswertung der Antwortzeiten und Lösungsstrategien zeigt auf, dass die Werkzeuge einen Einfluss auf die Bildung individueller und kollektiver Modellstrukturen haben. Der Einfluss äußert sich in einem benutzergerechten Verhalten der Versuchspersonen, welches nachweisbar durch die gezielten Interfaceanpassungen gefördert wurde.
45
Lundberg, Johan. « Dynamic Risk Management in Information Security : A socio-technical approach to mitigate cyber threats in the financial sector ». Thesis, Örebro universitet, Handelshögskolan vid Örebro Universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-87359.
Texte intégralRésumé :
In the last decade, a new wave of socio-technical cyber threats has emerged that is targeting both the technical and social vulnerabilities of organizations and requires fast and efficient threat mitigations. Yet, it is still common that financial organizations rely on yearly reviewed risk management methodologies that are slow and static to mitigate the ever-changing cyber threats. The purpose of this research is to explore the field of Dynamic Risk Management in Information Security from a socio-technical perspective in order to mitigate both types of threats faster and dynamically to better suit the connected world we live in today. In this study, the Design Science Research methodology was utilized to create a Dynamic Information Security Risk Management model based on functionality requirements collected through interviews with professionals in the financial sector and structured literature studies. Finally, the constructed dynamic model was then evaluated in terms of its functionality and usability. The results of the evaluation showed that the finalized dynamic risk management model has great potential to mitigate both social and technical cyber threats in a dynamic fashion.Under senaste decenniet har en ny våg av sociotekniska cyberhot uppkommit som är riktade både mot de sociala och tekniska sårbarheterna hos organisationer. Dessa hot kräver snabba och effektiva hotreduceringar, dock är det fortfarande vanligt att finansiella organisationer förlitar sig på årligen granskade riskhanteringsmetoder som både är långsamma och statiska för att mildra de ständigt föränderliga cyberhoten. Syftet med denna forskning är att undersöka området för dynamisk riskhantering inom informationssäkerhet ur ett sociotekniskt perspektiv, med målsättningen att snabbare och dynamiskt kunna mildra bägge typerna av hot för att bättre passa dagens uppkopplade värld. I studien användes Design Science Research för att skapa en dynamisk riskhanteringsmodell med syfte att hantera sociotekniska cyberhot mot informationssäkerheten. Riskhanteringsmodellen är baserad på funktionskrav insamlade genom intervjuer med yrkesverksamma inom finanssektorn, samt strukturerade litteraturstudier. Avslutningsvis utvärderades den konstruerade dynamiska modellen avseende dess funktionalitet och användbarhet. Resultaten av utvärderingen påvisade att den slutgiltiga dynamiska riskhanteringsmodellen har en stor potential att mitigera både sociala och tekniska cyberhot på ett dynamiskt sätt.
46
Schwarz, Alexander [Verfasser], et A. [Akademischer Betreuer] Albers. « Integration von Messdaten in die Simulation zur multikriteriellen, zeiteffizienten versuchsbasierten Optimierung technischer Systeme = Integration of measurement data in the simulation for the multicriteria time-efficient testbased optimization of technical systems / Alexander Schwarz. Betreuer : A. Albers ». Karlsruhe : KIT-Bibliothek, 2013. http://d-nb.info/1046888781/34.
Texte intégral
47
Сиротенко, Михаил Александрович. « Модели и методы оптимизации размещения аппаратных средств повышения эффективности электроснабжения в сетях 10 кВ ». Thesis, Харьковский национальный технический университет сельского хозяйства им. Петра Василенко, 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21801.
Texte intégralRésumé :
Диссертация на соискание ученой степени кандидата технических наук по специальности 05.14.02 – электрические станции, системы и сети. – Харьковский национальный технический университет сельского хозяйства имени Петра Василенко, Харьков, 2016.
Диссертация посвящена решению актуальной научно-прикладной проблемы принятия решений по оптимизации размещения аппаратных средств, предназначенных для повышения эффективности электроснабжения в разветвлённых распределительных сетях, в условиях неопределенности исходной информации. В диссертации разработан и усовершенствован ряд методов по оценке недоотпуска электроэнергии потребителям и среднего времени поиска места повреждения, что позволило учитывать наличие различных средств повышения эффективности электроснабжения (СПЭЭ) в сети. Предложена математическая модель оценки экономического эффекта от установки различных видов СПЭЭ в разветвлённых распределительных сетях сельских регионов, позволяющая оценивать не только эффект от снижения недоотпуска электроэнергии, но и эффект от снижения затрат на поиск места повреждения. Проведенное исследование влияния величины нагрузки и длины линии электропередачи на ожидаемый результат оптимизации размещения СПЭЭ в типовой распределительной сети 10 кВ показало, что установка СПЭЭ позволит снизить (по сравнению с сетью без СПЭЭ) ожидаемый ущерб от годового недоотпуска электрической энергии до 89,93%, а ожидаемое среднее время, затрачиваемое бригадой на поиск места повреждения, – до 82,37%. При этом, в нерезервируемых разветвлённых сетях наиболее эффективным аппаратным средством является линейный разъединитель, установленный совместно с указателем повреждённого участка, позволяющим передавать информацию о месте повреждения на диспетчерский пункт. В то же время, в резервируемых распределительных сетях напряжением 10 кВ, мощности электроустановок потребителей которых не превышают 250 кВА, установка дополнительных СПЭЭ, в том числе и автоматического ввода резерва, не эффективна. Основные результаты диссертации нашли практическое применение в виде вычислительной программы, позволившей в условиях неопределенности исходных данных определить оптимальное количество и места установки различных средств повышения эффективности электроснабжения в конкретных распределительных сетях 10 кВ.Dissertation for scientific degree of candidate of technical sciences, specialty 05.14.02 – electric power stations, networks and systems. – Kharkiv national technical University of agriculture named after Peter Vasilenko, Kharkiv, 2016. The dissertation is devoted to the resolution of the actual scientific and technical problems of decision-making on the placement optimization of efficiency improving means in distribution networks under initial information uncertainty to improve the efficiency of electricity consumers. It was developed and improved a number of methods for evaluate electricity shortage and average time of search fault location to take into account the existence of different means for efficiency improving of the network. The problem of the optimal solutions finding under the initial information uncertainty was formulated. It was theoretically grounded and suggested the algorithm that reduces the number of iterations when looking for optimal solution by the priority criteria for the decision making person. The dependence of optimal solutions on the length of transmission lines and power consumers was researched in 10 kV distribution networks.
48
Paes, Junior Marcelo Renato de Cerqueira. « Alocação Otimizada de Centrais Solares Fotovoltaicas no Sistema de Distribuição do Oeste do Estado da Paraíba ». Universidade Federal da Paraíba, 2014. http://tede.biblioteca.ufpb.br:8080/handle/tede/7555.
Texte intégralRésumé :
Submitted by Maria Suzana Diniz (msuzanad@hotmail.com) on 2015-11-05T15:16:09Z
No. of bitstreams: 1
arquivototal.pdf: 1606899 bytes, checksum: 90c3cfba727598d80a41bea38edd76ef (MD5)Made available in DSpace on 2015-11-05T15:16:09Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1606899 bytes, checksum: 90c3cfba727598d80a41bea38edd76ef (MD5) Previous issue date: 2014-08-29
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
The present work aims to simulate the effects of connecting photovoltaic power plants in the active energy losses of the distribution system at the west of the state of Paraíba. Initially was done the modeling of the distribution system, which has one supply point, 20 substations 69/13.8 kV and 25 distribution lines 69 kV. For network analysis was used the Newton-Raphson method for solution of power flow after and before the insertion of photovoltaic plants and finally an optimized allocation of solar photovoltaic plants has been proposed with the aim of minimizing losses of active power using genetic algorithms.
O presente trabalho tem como objetivo simular os efeitos da conexão de centrais geradoras fotovoltaicas nas perdas de energia ativa do sistema de distribuição do oeste do estado da Paraíba. Inicialmente foi realizada a modelagem do sistema de distribuição, que possui um ponto de suprimento, 20 subestações rebaixadoras 69/13,8 kV e 25 linhas de distribuição 69 kV. Para análise da rede foi utilizado o método de Newton-Raphson para solução do fluxo de potência do sistema antes e depois da inserção das centrais fotovoltaicas e por fim foi proposta uma alocação otimizada das centrais solares fotovoltaicas com o objetivo de minimização das perdas de energia ativa utilizando algoritmos genéticos.
49
Деревянко, Богдан Володимирович, et Bogdan Derevyanko. « Щодо вдосконалення системи навчальних закладів Донецького регіону на основі зарубіжного досвіду ». Thesis, Інститут економіко-правових досліджень НАН України, 2011. http://dspace.puet.edu.ua/handle/123456789/6715.
Texte intégralRésumé :
Переобтяження освітньої галузі надмірною кількістю навчальних закладів (далі – НЗ) і особливо вищих навчальних закладів (далі – ВНЗ), підготовка за державний рахунок не потрібних регіональній господарській системі економістів, юристів, бухгалтерів, менеджерів, а також зростаючий регіональний дефіцит технічних працівників вимагають оптимізації освітньої сфери на рівні Донецького регіону. Така оптимізація на рівні регіону забезпечить інтереси власників майна суб’єктів господарювання - НЗ та потреби у фахівцях цього регіону, сприятиме вирішенню загальнонаціональних проблем у досліджуваній сфері.
Excessive number of education and especially higher educational institutions training at state expense unnecessary regional economic system economists, lawyers, accountants, managers, and growing regional deficit technicians require optimization educational system at the Donetsk region. Such optimization at the regional level will ensure the interests of property owners and businesses need for specialists in the region, the solution of national problems in the study area.
50
Сиротенко, Михайло Олександрович. « Моделі та методи оптимізації розташування апаратних засобів підвищення ефективності електропостачання в мережах 10 кВ ». Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21787.
Texte intégralRésumé :
Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.14.02 – електричні станції, системи та мережі. – Харківський національний технічний університет сільського господарства імені Петра Василенка, Харків, 2016.
Дисертаційна робота присвячена розв'язанню актуальної науково-прикладної проблеми прийняття рішень з оптимізації розташування апаратних засобів, призначених для підвищення ефективності електропостачання в розгалужених розподільчих мережах, в умовах невизначеності вихідної інформації. Розроблено та вдосконалено ряд методів з оцінки недовідпуску електроенергії та середнього часу пошуку місця пошкодження, що дозволяють враховувати наявність різних засобів підвищення ефективності електропостачання в мережі. Сформульована задача пошуку оптимального рішення в умовах невизначеності вихідної інформації. Теоретично обґрунтовано та запропоновано алгоритм, що дозволяє зменшити кількість ітерацій при пошуку оптимальної схеми розташування засобів підвищення ефективності електропостачання за пріоритетними критеріями для особи, що приймає рішення. Досліджено залежність оптимальних рішень від протяжності лінії електропередачі та потужності електроустановок споживачів в розподільчих мережах 10 кВ.Dissertation for scientific degree of candidate of technical sciences, specialty 05.14.02 – electric power stations, networks and systems. – Kharkiv national technical University of agriculture named after Peter Vasilenko, Kharkiv, 2016. The dissertation is devoted to the resolution of the actual scientific and technical problems of decision-making on the placement optimization of efficiency improving means in distribution networks under initial information uncertainty to improve the efficiency of electricity consumers. It was developed and improved a number of methods for evaluate electricity shortage and average time of search fault location to take into account the existence of different means for efficiency improving of the network. The problem of the optimal solutions finding under the initial information uncertainty was formulated. It was theoretically grounded and suggested the algorithm that reduces the number of iterations when looking for optimal solution by the priority criteria for the decision making person. The dependence of optimal solutions on the length of transmission lines and power consumers was researched in 10 kV distribution networks.