Comunidades energéticas sustentáveis: estudo de Implementação de uma comunidade eólica no Algarve

Tese de Doutoramento, Gestão da Inovação e do Território, Faculdade de Economia, Universidade do Algarve, 2016

Equipamento para a cidade informal

Dissertação para obtenção do grau de Mestre em Arquitetura, apresentada na Universidade de Lisboa - Faculdade de Arquitetura.

Balanço energético da produção de feno da forrageira "massai" para criação de equídeos

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Tecnologia, Departamento de Engenharia Mecânica, 2016.

A OMC e a teoria das negociações econômicas internacionais (John Odell) : o comportamento dos atores nas conferências ministeriais de Cancun e Hong Kong

Dissertação (mestrado)—Universidade de Brasília, Instituto de Relações Internacionais, Programa de Pós-Graduação em Relações Internacionais, 2016.

Improved Electronics for the Hall A Detectors at JLab: Summing Modules and VDC Amplifier/Discriminator Cards

Testing of summing electronics and VDC A/D Cards was performed to assure proper functioning and operation within defined parameters. In both the summing modules and the VDC A/D cards, testing for minimum threshold voltage for each channel and crosstalk between neighboring channels was performed. Additionally, the modules were installed in Hall A with input signals from shower detectors arranged to establish a trigger by summing signals together with the use of tested modules. Testing involved utilizing a pulser to mimic PMT signals, a discriminator, an attenuator, a scaler, a level translator, an oscilloscope, a high voltage power supply, and a special apparatus used to power and send signal to the A/D cards. After testing, modules were obtained that meet necessary criteria for use in the APEX experiment, and the A/D cards obtained were determined to have adequate specifications for their utilization, with specific results included in the appendix.

Proyecto de Emprendimiento Unicornio

La idea de negocio consiste en la fabricación y venta al público de maletines personalizables, que el cliente pueda escoger su el color, material, forma e inclusive su estampado, cuántos bolsillos debería tener y dónde los debe tener. Lo que hace que el proyecto sea sostenible en el tiempo consiste en los diseños creativos e innovadores, además del hecho de que la producción no se va realizar en masa y cada diseño va ser pensado en su dueño gracias a las características que el cliente pone en el diseño y también en el proceso de interacción con el cliente, de manera que se le aplicará un cuestionario que nos diga más de para qué lo usa y cómo espera que sea. Así pues la gran ventaja la hace el capital humano y la especialización del producto y sus accesorios a unas necesidades puntuales. El proyecto está en estado de creación aún, sin embargo se ha dialogado con posibles proveedores, entre ellos el fabricante de maletines “ZAKbolsos” quien ha expresado poder hacer posible la voluntad de fabricar bajo pedido sin número de unidades determinada de un modelo específico modelo que es similar al que actualmente aplican que es fabricación sobre pedido del cliente y venta en punto físico, con más de 5 años de experiencia en el sector, y además con experiencia en producción para empresas. En cuanto aliado se tiene a la empresa de David Vargas, llamada Guio quien tiene la experiencia en pauta de mercadeo, desarrollo de producto y posicionamiento del mismo. David Vargas tiene la profesión de diseñador industrial, y finalmente el emprendedor (yo), quien es administrador de negocios internacionales. La inversión se va poder recuperar en 36 meses, puesto que la inversión de capital en el primer periodo es intensivo y esto se calcula con la venta de 14 maletines al mes, lo cual es aceptable teniendo en cuenta que el mercado crece a cifras del 12% anual. El margen de contribución es del 43% y la TIR es de 38%. Adicionalmente la flexibilidad financiera es grande puesto que no hay mayores costos fijos aparte del sueldo del emprendedor. La empresa va crecer a través de posicionamiento de marca y diferenciación de diseños con la competencia que en general tiende a llegar al cliente corporativo en vez de al cliente final con esta propuesta de personalización. Las ventajas competitivas van a ser sustentadas en la orientación al cliente, en hacerle percibir al mismo una calidad superior y una propuesta que se base en la diferenciación y el posicionamiento de marca.

La política exterior expansionista y racista del Tercer Reich en Checoslovaquia y Croacia en 1933-1943

El objetivo de este estudio de caso es analizar la forma en la cual la política exterior expansionista y racista del Tercer Reich repercutió en la invasión militar de Checoslovaquia y en la creación de un régimen fascista en Croacia. El surgimiento del Tercer Reich implicó el desencadenamiento de la Segunda Guerra Mundial, generando un cambio en la configuración del Sistema Internacional. Desde el ascenso de Hitler al poder en 1933, Alemania proyectó una discursiva racista y expansionista en su política exterior, con el objetivo de configurar un nuevo ordenamiento europeo. Por lo anterior, la política exterior del Tercer Reich justificó la invasión de Checoslovaquia basándose en los principios del espacio vital que permitieron adherir el territorio al Reich, e influyó en el ascenso del régimen fascista de Ante Pavelić en Croacia, quien colaboró para la consecución del interés nacional racial alemán.

Índice acumulativo de riesgo (nice) como prueba diagnóstica con base en tomografía corneal por elevación en la prevención de ectasia corneal post-lasik

Antecedentes La ectasia corneal post-lasik (ECPL) es una complicación infrecuente, pero devastadora en la cirugía lasik (queratomileusis asistida con éxcimer láser) para el tratamiento de la miopía con o sin astigmatismo. Con base en la tomografía corneal por elevación por imágenes de Scheimpflug (Sistema Pentacam HR, Oculus Wetzlar, Alemania), se propone un novedoso índice acumulativo de riesgo para ser utilizado como prueba diagnóstica de tamizaje y así prevenir esta complicación. Metodología Se realizó un estudio observacional analítico, de corte transversal tipo pruebas diagnósticas, con el fin de evaluar las características operativas del índice NICE teniendo como estándar de referencia el módulo de Belin-Ambrosio (Pentacam HR) utilizando un modelo de regresión logística binaria, tablas de contingencia y estimando el área bajo la curva ROC. Resultados Se evaluaron 361 ojos de los cuales el 59,3% provenían de pacientes de sexo femenino, la edad media global fue de 30 años (RIC 11,0). El modelo logístico binario aplicado se construyó con base en cuatro variables independientes cuantitativas (K2, PAQUI, EP e I-S) y una cualitativa (SEXO), y se determinó su relación con la variable dependiente, NICE (puntaje final). Las variables predictoras fueron estadísticamente significativas clasificando adecuadamente el 92,9% de los ojos evaluados según presencia o ausencia de riesgo. El coeficiente de Nagelkerke fue de 74,4%. Conclusiones El índice acumulativo de riesgo NICE es una herramienta diagnóstica novedosa en la evaluación de candidatos a cirugía refractiva lasik para prevenir la ectasia secundaria.

Development of Core Design Methods and Tools for Gen-IV Heavy Liquid Metal Cooled Reactors

Heavy Liquid Metal Cooled Reactors are among the concepts, fostered by the GIF, as potentially able to comply with stringent safety, economical, sustainability, proliferation resistance and physical protection requirements. The increasing interest around these innovative systems has highlighted the lack of tools specifically dedicated to their core design stage. The present PhD thesis summarizes the three years effort of, partially, closing the mentioned gap, by rationally defining the role of codes in core design and by creating a development methodology for core design-oriented codes (DOCs) and its subsequent application to the most needed design areas. The covered fields are, in particular, the fuel assembly thermal-hydraulics and the fuel pin thermo-mechanics. Regarding the former, following the established methodology, the sub-channel code ANTEO+ has been conceived. Initially restricted to the forced convection regime and subsequently extended to the mixed one, ANTEO+, via a thorough validation campaign, has been demonstrated a reliable tool for design applications. Concerning the fuel pin thermo-mechanics, the will to include safety-related considerations at the outset of the pin dimensioning process, has given birth to the safety-informed DOC TEMIDE. The proposed DOC development methodology has also been applied to TEMIDE; given the complex interdependence patterns among the numerous phenomena involved in an irradiated fuel pin, to optimize the code final structure, a sensitivity analysis has been performed, in the anticipated application domain. The development methodology has also been tested in the verification and validation phases; the latter, due to the low availability of experiments truly representative of TEMIDE's application domain, has only been a preliminary attempt to test TEMIDE's capabilities in fulfilling the DOC requirements upon which it has been built. In general, the capability of the proposed development methodology for DOCs in delivering tools helping the core designer in preliminary setting the system configuration has been proven.

Normalizzazione del bordello senza muri. L'oscenità virale tra arte, moda e social network

Il progetto di tesi nasce dalla volontà di far luce sul rapporto tra il medium fotografico e la nozione di nuova oscenità, teorizzata e disseminata nei suoi scritti da Jean Baudrillard. Nozione che – se intesa nell’accezione proposta dal filosofo francese, ovvero l’oscenità del visibile, del troppo visibile, del più visibile del visibile – ben si adatta a dettagliare i concetti di trasparenza e di visibilità peculiari della società attuale, costantemente impegnata nel mettere a nudo se stessa attraverso i social media in nome della cosiddetta ideologia della post-privacy. Incoraggiando una continua violazione della sfera del segreto, tale ideologia favorirebbe, infatti, la progressiva diminuzione dello scarto tra ciò che può essere reso di dominio pubblico e ciò che invece, tradizionalmente, sarebbe dovuto appartenere all’ambito del privato. Un andamento generale della cultura, quello appena delineato, che si è imposto capillarmente a cavallo di millennio, accelerato dalla nascita del World Wide Web, del quale la fotografia riesce a farsi promotrice oltre che sommo interprete, contribuendo – anche in virtù di un’innovata condizione tecnologica– al compimento della visibilità e della trasparenza totale. Nel corso della trattazione, la nozione “aggiornata” di osceno sarà, dunque, assurta a strumento euristico utile a tracciare gli svolgimenti paralleli della pratica fotografica nei campi delle arti visive, della moda e dei social media, in un arco temporale che va dall’inizio degli anni Novanta a oggi. Uno strumento attraverso cui connettere autori di riferimento, rileggerne alcuni e candidarne di nuovi tra quanti, allargando il “campo del fotografabile” teorizzato da Pierre Bourdieu, profanano la soglia del privato e portano alla ribalta i risvolti banali e ordinari della quotidianità, fino a quelli intimi, tragici, inquietanti, perturbanti o addirittura nefandi, favorendo così la concretizzazione di quel “bordello senza muri” che secondo Marshall McLuhan è il mondo nell’età fotografica.

Development of methodologies supporting the sustainable and safe integration of offshore conventional and renewable energy production

Against a backdrop of rapidly increasing worldwide population and growing energy demand, the development of renewable energy technologies has become of primary importance in the effort to reduce greenhouse gas emissions. However, it is often technically and economically infeasible to transport discontinuous renewable electricity for long distances to the shore. Another shortcoming of non-programmable renewable power is its integration into the onshore grid without affecting the dispatching process. On the other hand, the offshore oil & gas industry is striving to reduce overall carbon footprint from onsite power generators and limiting large expenses associated to carrying electricity from remote offshore facilities. Furthermore, the increased complexity and expansion towards challenging areas of offshore hydrocarbons operations call for higher attention to safety and environmental protection issues from major accident hazards. Innovative hybrid energy systems, as Power-to-Gas (P2G), Power-to-Liquid (P2L) and Gas-to-Power (G2P) options, implemented at offshore locations, would offer the opportunity to overcome challenges of both renewable and oil & gas sectors. This study aims at the development of systematic methodologies based on proper sustainability and safety performance indicators supporting the choice of P2G, P2L and G2P hybrid energy options for offshore green projects in early design phases. An in-depth analysis of the different offshore hybrid strategies was performed. The literature reviews on existing methods proposing metrics to assess sustainability of hybrid energy systems, inherent safety of process routes in conceptual design stage and environmental protection of installations from oil and chemical accidental spills were carried out. To fill the gaps, a suite of specific decision-making methodologies was developed, based on representative multi-criteria indicators addressing technical, economic, environmental and societal aspects of alternative options. A set of five case-studies was defined, covering different offshore scenarios of concern, to provide an assessment of the effectiveness and value of the developed tools.

I Malvezzi della Ca' Grande: genesi, sviluppo e dispersione di una quadreria bolognese del Settecento

La ricerca ricostruisce e analizza la storia della raccolta d’arte appartenuta al ramo senatorio della famiglia Malvezzi della Ca’ Grande all’interno del variegato panorama collezionistico bolognese settecentesco. La volontà di indagarne lo sviluppo è motivata sia dalla sua esemplarità che dal suo carattere eccezionale. Fondata da Piriteo III (1658-1728) con l’acquisto e la commissione di una cinquantina di dipinti, sia di artisti contemporanei sia di maestri antichi, a cui si aggiungono le opere ereditate dagli antenati, la raccolta fu accresciuta nell’arco di sole tre generazioni. Il principale artefice dell’ampliamento del patrimonio pittorico del casato fu il figlio Sigismondo III (1703-1787), tramite il quale confluì nella quadreria anche l’importante collezione del marchese Paolo Magnani, suo zio materno. Compiendo scelte collezionistiche originali rispetto a quelle d’ordine marcatamente municipalistico, Sigismondo raccolse per la galleria della Ca’ Grande numerose opere di artisti stranieri, glorificati e ricercati in campo europeo, ma estranei di norma al gusto petroniano dell’epoca. Al marchese spetta, inoltre, l’acquisizione del celebre nucleo di opere tre-quattrocentesche, che andò a formare la Camera degli Antichi. Secondo principi illuministici, questi mirava a possedere una sorta di ideale museo privato, ove fosse possibile ammirare il progresso dell’arte petroniana dalle origini sino alla modernità e istituire paragoni fra le più importanti scuole pittoriche. Anche l’erede Piriteo IV (1734-1806) continuò ad ampliare la collezione, compiendo acquisti più limitati, ma non per questo meno significativi. Alla sua morte si estinse la linea maschile del ramo senatorio, per cui la prestigiosa quadreria fu divisa tra le figlie Maria (1780-1865) e Teresa (1782-1811). La raccolta Malvezzi non ebbe la fortuna di confluire entro collezioni durature, cosicché in cinquant’anni quella che fu una delle più importanti gallerie della Bologna settecentesca è stata irrimediabilmente dispersa.

Analysis of the impact of stationary energy storage systems in trolleybus grids using Simulink-based modelling

The voltage profile of the catenary between traction substations (TSSs) is affected by the trolleybus current intake and by its position with respect to the TSSs: the higher the current requested by the bus and the further the bus from the TSSs, the deeper the voltage drop. When the voltage drops below 500V, the trolleybus is forced to decrease its consumption by reducing its input current. This thesis deals with the analysis of the improvements that the installation of an BESS produces in the operation of a particularly loaded FS of the DC trolleybus network of the city of Bologna. The stationary BESS is charged by the TSSs during off-peak times and delivers the stored energy when the catenary is overloaded alleviating the load on the TSSs and reducing the voltage drops. Only IMC buses are considered in the prospect of a future disposal of all internal combustion engine vehicles. These trolleybuses cause deeper voltage drops because they absorb enough current to power their traction motor and recharge the on board battery. The control of the BESS aims to keep the catenary voltage within the admissible voltage range and makes sure that all physical limitations are met. A model of FS Marconi Trento Trieste is implemented in Simulink environment to simulate its daily operation and compare the behavior of the trolleybus network with and without BESS. From the simulation without BESS, the best location of the energy storage system is deduced, and the battery control is tuned. Furthermore, from the knowledge of the load curve and the battery control trans-characteristic, it is formulated a prediction of the voltage distribution at BESS connection point. The prediction is then compared with the simulation results to validate the Simulink model. The BESS allows to decrease the voltage drops along the catenary, the Joule losses and the current delivered by the TSSs, indicating that the BESS can be a solution to improve the operation of the trolleybus network.

Boosting microbial fuel cell performance by combining with an external supercapacitor

Microbial Fuel Cells (MFC) technology finds space as a promising technology as a green alternative power-generating device, by the possibility to convert organic matter directly into electricity by microbially catalysed reactions, especially for the potential of the simultaneous treatment of wastewaters. Despite the studies that were carried out over the decades, MFCs still provide insufficient power and current densities in order to be commercially attractive in the energy market. Scientific community today pursues two main strategies in order to increase the overall performance output of the MFC. The first is to support the cells with an external supercapacitor (SC), which is able to accept and deliver charge much faster than normal capacitors, thanks to the use of an electrostatic double-layer capacitance, in combination with pseudocapacitance. The second is to implement directly the SC into the MFC, by using carbon electrodes with high surface area, similar to the SC. Both strategies are eventually supported by the use of charge boosters, respect to the application of the MFC. Galvanostatic measures for the MFC and SCs are performed at different currents, alone and by integration of both devices. The SCs used have a capacitance respectively of 1F, 3F and 6F. Subsequently, a stack of MFCs is assembled and paired to a 3F SC, in order to power an ambient diffuser, able to spray at intervals with a can and a controller. In conclusion, the use of a SC in parallel to the MFCs increases the overall performance of the system. The SC remove the discharge current limit of the MFC and increases the energy and power delivered by the system, allowing it to power for a certain time the ambient diffuser successfully. The key factor highlighted by the final experiment was the insufficient charging time of the SC, resulting finally in a voltage that is inadequate to power the device. Further studies are therefore necessary to improve the performance of the MFCs.

A dissertation on prophecies, that have been fulfilled, are now fulfilling, or will hereafter be fulfilled : relative to the great period of 1260 years; the papal and Mohammedan apostacies: the tyrannical reign of antichrist, or the infidel power; and the restoration of the Jews /

Mode of access: Internet.