UWB Monocycle Generator based on the non-linear effects of an SOA-integrated structure

In this letter, we propose and experimentally demonstrate a novel and single structure to generate ultra-wideband (UWB) pulses by means of the cross-phase modulation present in a semiconductor optical amplifier unified structure. The key components of this system is an integrated Mach-Zehnder interferometer with two semiconductor optical amplifiers and an optical processing unit. The fusion of these two components permits the generation and customization of UWB monocycle pulses. The polarity of the output pulses is easily modified through the single selection of a specific input port. Moreover, the capacity of transmitting several data sequences is demonstrated and the potentiality to adapt the system to different modulation formats is analyzed.

Perfil de playas sustentadas : estudio hidrodinámico y experimental : directrices de diseño

Las playas sustentadas por medio de un pie sumergido son una atractiva alternativa de diseño de regeneración de playas especialmente cuando las condiciones física del emplazamiento o las características de la arena nativa y de préstamo producen perfiles de alimentación que no se intersectan. La observación y propuesta de este tipo de solución data de los años 1960’s, así como la experiencia internacional en la construcción de este tipo de playas. Sin embargo, a pesar de su utilización y los estudios en campo y laboratorio, no se dispone de criterios ingenieriles que apoyen el diseño de las mismas. Esta tesis consiste en un análisis experimental del perfil de playas sustentadas en un pie sumergido (o colgadas) que se concreta en una propuesta de directrices de diseño general que permiten estimar la ubicación y características geométricas del pie sumergido frente a un oleaje y material que constituye la playa determinados. En la tesis se describe el experimento bidimensional realizado en el modelo físico de fondo móvil, donde se combinan cinco tipos de oleaje con tres configuraciones del pie sumergido (“Sin estructura”, configuración baja o “Estructura 1” y configuración alta o “Estructura 2”), se presentan los resultados obtenidos y se realiza una discusión detallada de las implicaciones de los resultados desde el punto de vista hidrodinámico utilizando monomios adimensionales. Se ha realizado un análisis detallado del estado del arte sobre playas colgadas, presentando el concepto y las experiencias de realizaciones en distintos países. Se ha realizado una cuidadosa revisión de la literatura publicada sobre estudios experimentales de playas colgadas, modelos teóricos y otras cuestiones auxiliares, necesarias para la formulación de la metodología de la tesis. El estudio realizado se ha estructurado en dos fases. En la primera fase se ha realizado una experimentación en un modelo físico de fondo móvil construido en las instalaciones del Centro de Estudios de Puertos y Costas (CEPYC) del Centro de Estudios y Experimentación de Obras Públicas (CEDEX), consistente en un canal de 36 m de longitud, 3 m de anchura y 1.5 m de altura, provisto de un generador de oleaje de tipo pistón. Se ha diseñado una campaña de 15 ensayos, que se obtienen sometiendo a cinco tipos de oleaje tres configuraciones distintas de playa colgada. En los ensayos se ha medido el perfil de playa en distintos instantes hasta llegar al equilibrio, determinando a partir de esos datos el retroceso de la línea de costa y el volumen de sedimentos perdido. El tiempo total efectivo de ensayo asciende a casi 650 horas, y el número de perfiles de evolución de playa obtenidos totaliza 229. En la segunda fase se ha abordado el análisis de los resultados obtenidos con la finalidad de comprender el fenómeno, identificar las variables de las que depende y proponer unas directrices ingenieriles de diseño. Se ha estudiado el efecto de la altura de ola, del periodo del oleaje, del francobordo adimensional y del parámetro de Dean, constatándose la dificultad de comprensión del funcionamiento de estas obras ya que pueden ser beneficiosas, perjudiciales o inocuas según los casos. También se ha estudiado la respuesta del perfil de playa en función de otros monomios adimensionales, tales como el número de Reynolds o el de Froude. En el análisis se ha elegido el monomio “plunger” como el más significativo, encontrando relaciones de éste con el peralte de oleaje, la anchura de coronación adimensional, la altura del pie de playa adimensional y el parámetro de Dean. Finalmente, se propone un método de diseño de cuatro pasos que permite realizar un primer encaje del diseño funcional de la playa sustentada frente a un oleaje de características determinadas. Las contribuciones más significativas desde el punto de vista científico son: - La obtención del juego de resultados experimentales. - La caracterización del comportamiento de las playas sustentadas. - Las relaciones propuestas entre el monomio plunger y las distintas variables explicativas seleccionadas, que permiten predecir el comportamiento de la obra. - El método de diseño propuesto, en cuatro pasos, para este tipo de esquemas de defensa de costas. Perched beaches are an attractive beach nourishment design alternative especially when either the site conditions or the characteristics of both the native and the borrow sand lead to a non-intersecting profile The observation and suggestion of the use of this type of coastal defence scheme dates back to the 1960’s, as well as the international experience in the construction of this type of beaches. However, in spite of its use and the field and laboratory studies performed to-date, no design engineering guidance is available to support its design. This dissertation is based on the experimental work performed on a movable bed physical model and the use of dimensionless parameters in analyzing the results to provide general functional design guidance that allow the designer, at a particular stretch of coast - to estimate the location and geometric characteristics of the submerged sill as well as to estimate the suitable sand size to be used in the nourishment. This dissertation consists on an experimental analysis of perched beaches by means of a submerged sill, leading to the proposal of general design guidance that allows to estimate the location and geometric characteristics of the submerged sill when facing a wave condition and for a given beach material. The experimental work performed on a bi-dimensional movable bed physical model, where five types of wave conditions are combined with three configurations of the submerged sill (“No structure”, low structure or “Structure 1”, and high structure or “Structure 2”) is described, results are presented, and a detailed discussion of the results - from the hydrodynamic point of view – of the implications of the results by using dimensionless parameters is carried out. A detailed state of the art analysis about perched beaches has been performed, presenting the “perched beach concept” and the case studies of different countries. Besides, a careful revision of the literature about experimental studies on perched beaches, theoretical models, and other topics deemed necessary to formulate the methodology of this work has been completed. The study has been divided into two phases. Within the first phase, experiments on a movable-bed physical model have been developed. The physical model has been built in the Centro de Estudios de Puertos y Costas (CEPYC) facilities, Centro de Estudios y Experimentación de Obras Públicas (CEDEX). The wave flume is 36 m long, 3 m wide and 1.5 m high, and has a piston-type regular wave generator available. The test plan consisted of 15 tests resulting from five wave conditions attacking three different configurations of the perched beach. During the development of the tests, the beach profile has been surveyed at different intervals until equilibrium has been reached according to these measurements. Retreat of the shoreline and relative loss of sediment in volume have been obtained from the measurements. The total effective test time reaches nearly 650 hours, whereas the total number of beach evolution profiles measured amounts to 229. On the second phase, attention is focused on the analysis of results with the aim of understanding the phenomenon, identifying the governing variables and proposing engineering design guidelines. The effect of the wave height, the wave period, the dimensionless freeboard and of the Dean parameter have been analyzed. It has been pointed out the difficulty in understanding the way perched beaches work since they turned out to be beneficial, neutral or harmful according to wave conditions and structure configuration. Besides, the beach profile response as a function of other dimensionless parameters, such as Reynolds number or Froude number, has been studied. In this analysis, the “plunger” parameter has been selected as the most representative, and relationships between the plunger parameter and the wave steepness, the dimensionless crest width, the dimensionless crest height, and the Dean parameter have been identified. Finally, an engineering 4-step design method has been proposed, that allows for the preliminary functional design of the perched beach for a given wave condition. The most relevant contributions from the scientific point of view have been: - The acquisition of a consistent set of experimental results. - The characterization of the behavior of perched beaches. - The proposed relationships between the plunger parameter and the different explanatory variables selected, that allow for the prediction of the beach behavior. - The proposed design method, four-step method, for this type of coastal defense schemes.

Bando cheneral, carta circular, ò manifest à tot el orbe sobre les grans festes que la ... ciutat de Valencia vá à fer à honor ... del beato Juan de Ribera, arzobispo y virey de ella en los añs mil sincsents xixanta y huit : [Texto impreso] y asó será en ... mil setsents noranta y set ... y Pio Papa Sexto, que el beatificá el ... añ mil setsents noranta y sis

Hay un ejemplar encuadernado con: Individual noticia de todos los altares, arcos pinturas, adornos y lo mas exquisito y notable que havia en la carrera de la procession, y de las iluminaciones en general ... : (XVIII/1705).

Autonomous classification models in ubiquitous environments

Stream-mining approach is defined as a set of cutting-edge techniques designed to process streams of data in real time, in order to extract knowledge. In the particular case of classification, stream-mining has to adapt its behaviour to the volatile underlying data distributions, what has been called concept drift. Moreover, it is important to note that concept drift may lead to situations where predictive models become invalid and have therefore to be updated to represent the actual concepts that data poses. In this context, there is a specific type of concept drift, known as recurrent concept drift, where the concepts represented by data have already appeared in the past. In those cases the learning process could be saved or at least minimized by applying a previously trained model. This could be extremely useful in ubiquitous environments that are characterized by the existence of resource constrained devices. To deal with the aforementioned scenario, meta-models can be used in the process of enhancing the drift detection mechanisms used by data stream algorithms, by representing and predicting when the change will occur. There are some real-world situations where a concept reappears, as in the case of intrusion detection systems (IDS), where the same incidents or an adaptation of them usually reappear over time. In these environments the early prediction of drift by means of a better knowledge of past models can help to anticipate to the change, thus improving efficiency of the model regarding the training instances needed. By means of using meta-models as a recurrent drift detection mechanism, the ability to share concepts representations among different data mining processes is open. That kind of exchanges could improve the accuracy of the resultant local model as such model may benefit from patterns similar to the local concept that were observed in other scenarios, but not yet locally. This would also improve the efficiency of training instances used during the classification process, as long as the exchange of models would aid in the application of already trained recurrent models, that have been previously seen by any of the collaborative devices. Which it is to say that the scope of recurrence detection and representation is broaden. In fact the detection, representation and exchange of concept drift patterns would be extremely useful for the law enforcement activities fighting against cyber crime. Being the information exchange one of the main pillars of cooperation, national units would benefit from the experience and knowledge gained by third parties. Moreover, in the specific scope of critical infrastructures protection it is crucial to count with information exchange mechanisms, both from a strategical and technical scope. The exchange of concept drift detection schemes in cyber security environments would aid in the process of preventing, detecting and effectively responding to threads in cyber space. Furthermore, as a complement of meta-models, a mechanism to assess the similarity between classification models is also needed when dealing with recurrent concepts. In this context, when reusing a previously trained model a rough comparison between concepts is usually made, applying boolean logic. The introduction of fuzzy logic comparisons between models could lead to a better efficient reuse of previously seen concepts, by applying not just equal models, but also similar ones. This work faces the aforementioned open issues by means of: the MMPRec system, that integrates a meta-model mechanism and a fuzzy similarity function; a collaborative environment to share meta-models between different devices; a recurrent drift generator that allows to test the usefulness of recurrent drift systems, as it is the case of MMPRec. Moreover, this thesis presents an experimental validation of the proposed contributions using synthetic and real datasets.

Relacio xistosa [Texto impreso] : ó xasco que va doná una guapa valenciana á set galans pretendents que volian conquistarla

Hay un ejemplar encuadernado con: Romans, y coloqui nou, pera divertir el humor y desterrar la melancolia, yà que no tenim dinès ... (NP849.91/3085).

Relacio xistosa [Texto impreso] : ó xasco que va doná una guapa valenciana á set galans pretendents que volian conquistarle

Hay un ejemplar encuadernado con: Bandos divertidísimos contra los borrachos y borrachas, y gente aficionada al vino(NP849.91/3087).

Edén: relato, imagen y proyecto. El concepto de paraíso terrenal como generador de arquitecturas

Esta tesis, Edén: relato, imagen y proyecto. El concepto de Paraíso terrenal como generador de arquitecturas se realiza con el objetivo de estudiar los vínculos entre la idea de Edén, o Paraíso y la arquitectura. Siempre trabajando desde los tres niveles de representación, relato, imagen y proyecto. En la aproximación al objeto de estudio, se procede a estudiar el relato en sí, y se hallan, en la forma misma del relato, unas implicaciones relacionadas con el mundo mitológico y arquetípico. Estos resultados iniciales son la detección de que cada una de las partes que forman el conjunto edénico, han sido previamente objetos de culto en religiones corte pagano o chamánico, desde la prehistoria. El agua, los árboles, los animales, la tierra y los surcos del huerto, todos ellos han sido objetos de veneración desde tiempos inmemoriales. Trazando la genealogía de estos objetos de culto se acude al análisis arquetípico, que relaciona estos objetos venerados con el inconsciente y con la manifestación espontanea de los mismos en la realidad. Estos estudios arrojan resultados con implicaciones espaciales, arquitectónicas y se concluye que más que un ideal o un lugar en concreto, en el mito o en la realidad, lo que definitivamente parece (y demuestra) ser, es una tipología arquitectónica relacionada en su estructura formal y teórica con la del jardín cerrado. La manifestación en imagen de estos resultados y la investigación misma, llevan a acudir a unas de las imágenes más primitivas del Jardín del Edén, y que de hecho son previas a la “invención” del Hortus Conclusus como tal. Estas son las representaciones mozárabes del Paraíso Terrenal como lugar cierto en la tierra, que aparecen en los mappaemundi incluidos en los Códices de los Beatos. En el estudio de los mismos se comprende la estructura formal y teórica de lo que son las arquitecturas paradisíacas. Su calado en la cultura occidental hace que estos documentos sirvan como exoesqueletos del proyecto paradisíaco. Además, por su variedad arrojan gran número de resultados de índole espacial. Los resultados arrojados por el estudio de las representaciones edénicas de los Beatos llevan la investigación a otro momento e imágenes de la historia de la arquitectura donde, por su radicalidad de planteamientos y tabula rasa con las arquitecturas previas son necesarios nuevos lenguajes de aproximación al tema proyectual por el deseo globalizador que implican estas arquitecturas, esto es en el periodo de la arquitectura moderna. Se utiliza como elemento calibrador El poema del ángulo recto de Le Corbusier. Este documento gráfico no sólo nos da la clave que bullía en este periodo con respecto a una nueva aproximación a la superficie terrestre y al medio. Este instrumento también sirve de catalizador entre lo real y lo ideal y es una síntesis de operaciones arquitectónicas, que mediante la comparación y/o oposición con los resultados previos del estudio arquetípico y de los Beatos, genera grandes grupos de características que se hallan entrelazadas en los proyectos paradisíacos. Gracias a estos documentos se puede concluir con una síntesis de características que comparten los proyectos paradisiacos, que en todo caso son esto, proyectos en plural. No existe la unicidad, ya que se infiere de este estudio que son, en conjunto, una forma de hacer ciertas arquitecturas. Tienen características medibles y reproducibles y unas condiciones tipológicas y de generación de campos que permiten producir muchos tipos de proyectos, todos ellos de tipología paradisíaca. ABSTRACT This thesis, Eden: Tale, Image and Project. The Concept of Terrestrial Paradise as a Generator of Architectures, is carried out with the objective of studying the relations between the idea of Eden or Paradise and architecture. In every case working from the three levels of representation, tale, image and project. On the approximation to the object of study, the investigation is centered on the tale itself, and in the same core of it, are found some implications that relate it with the world of mythology and archetype. These initial results consist of detecting that each one of the parts that form the edenic set; have previously been objects of cult in religions of a pagan or shamanic nature, since pre-historic times. Water, animals, earth and the grooves of the orchard, have all been objects of reverence since the dawn of time. Tracing the genealogy of these objects an archetypal type of analysis is taken on, which relates the revered objects with the subconscious and with the spontaneous manifestation of these in reality. These studies also provide results with spatial and architectonic implications, and it is concluded that more than an ideal or a concrete place, in myth or reality, what it definitely seems (and shows to be) is an architectonic typology, related in its formal and theoretical structure with that of the enclosed garden. The manifestation in image of these results, and the investigation itself, lead to reach for one of the most primitive set of images of the Garden of Eden, and that are in fact previous to the “invention” of the Hortus Conclusus as such. A collection of mozárabe representations of the Terrestrial Paradise as a concrete place on Earth. These are the mappaemundi included in the Codexes of the Beatos. By their study, the formal and theoretical structure of paradisal architectures is understood. Their importance in occidental culture makes these documents bring out their side as exoskeletons of the paradisal Project. Also, for their variety, they cast a great number of results of a spatial nature. The results released by the study of the edenic representations of the Beatos take the investigation to another moment and set of images within the history of architecture, where the radicality of the approaches to architecture, and the tabula rasa in relation to previous architectures make it necessary to invent new languages of approximation to the subject of project. This happens because of the globalizing tones that imply these architectures. The lapse of time referred to would be during the general practice of modern architecture. The object of calibration would be The Poem of the Right Angle, by Le Corbusier. The graphic document not only gives us the key of what flowed during that time when a new approximation to the surface of earth and to the environment was retrieved. This instrument also serves as a catalyst between real and ideal, and it is a synthesis of architectural operations that by comparison and/or opposition with the previous results of the archetypal study, and of the Beatos, generates large groups of characteristics that are intertwined in the paradisal project. Due to these documents we can conclude the investigation with a series of characteristics that share the paradisal projects, which in any case are this, projects, in plural. There is no uniqueness. From these findings, it can be inferred that a Paradisal Project is a way to undertake a project, and certain kinds of architecture. They are measurable and are underlaid by a consistent pattern, they also have typological conditions and of field generation, that make it possible to produce many kinds of projects, all of a paradisal typology.

Improved high-speed de-excitation system for brushless synchronous machines tested on a 20 MVA hydro-generator

Synchronous machines with brushless excitation have the disadvantage that the field winding is not accessible for the de-excitation of the machine. This means that, despite the proper operation of the protection system, the slow de-excitation time constant may produce severe damage in the event of an internal short circuit. A high-speed de-excitation system for these machines was developed, and this study presents the continuation of a previously published study. This study presents the design by computer simulation and the results of the first commissioning of this de-excitation system in a commercial 20 MVA hydro-generator. The de-excitation is achieved by inserting resistance in the field circuit, obtaining a dynamic response similar to that achieved in machines with static excitation. In this case, a non-linear discharge resistor was used, making the dynamic response even better.

The C-terminal SET domains of ALL-1 and TRITHORAX interact with the INI1 and SNR1 proteins, components of the SWI/SNF complex

The ALL-1 gene was discovered by virtue of its involvement in human acute leukemia. Its Drosophila homolog trithorax (trx) is a member of the trx-Polycomb gene family, which maintains correct spatial expression of the Antennapedia and bithorax complexes during embryogenesis. The C-terminal SET domain of ALL-1 and TRITHORAX (TRX) is a 150-aa motif, highly conserved during evolution. We performed yeast two hybrid screening of Drosophila cDNA library and detected interaction between a TRX polypeptide spanning SET and the SNR1 protein. SNR1 is a product of snr1, which is classified as a trx group gene. We found parallel interaction in yeast between the SET domain of ALL-1 and the human homolog of SNR1, INI1 (hSNF5). These results were confirmed by in vitro binding studies and by demonstrating coimmunoprecipitation of the proteins from cultured cells and/or transgenic flies. Epitope-tagged SNR1 was detected at discrete sites on larval salivary gland polytene chromosomes, and these sites colocalized with around one-half of TRX binding sites. Because SNR1 and INI1 are constituents of the SWI/SNF complex, which acts to remodel chromatin and consequently to activate transcription, the interactions we observed suggest a mechanism by which the SWI/SNF complex is recruited to ALL-1/trx targets through physical interactions between the C-terminal domains of ALL-1 and TRX and INI1/SNR1.

Examining the relationship between daily changes in support and smoking around a self-set quit date

This study was funded by the Swiss National Foundation (100014_124516). We would like to thank all students who helped with data collection.

O apelo ao legislador : apellentscheidung, na praxis da Corte Constitucional Federal Alemã / Gilmar Ferreira Mendes. --Tribunal Constitucional Alemão e o apelo ao legislador : "appelentscheidung" ; na praxis da Corte Constitucional Federal Alemã. Revista de Direito Público, vol 25 n 99 p 32 a 53 jul/set 1991."

Variação do título : Apelo ao legislador na Corte Constitucional Federal Alemã. Revista Trimestral de Direito Público, n 10 p 33 a 51 1995.

sqv-3, -7, and -8, a set of genes affecting morphogenesis in Caenorhabditis elegans, encode enzymes required for glycosaminoglycan biosynthesis

sqv (squashed vulva) genes comprise a set of eight independent loci in Caenorhabditis elegans required zygotically for the invagination of vulval epithelial cells and maternally for normal oocyte formation and embryogenesis. Sequencing of sqv-3, sqv-7, and sqv-8 suggested a role for the encoded proteins in glycolipid or glycoprotein biosynthesis. Using a combination of in vitro analysis of SQV enzymatic activities, sqv+-mediated rescue of vertebrate cell lines, and biochemical characterization of sqv mutants, we show that sqv-3, -7, and -8 all affect the biosynthesis of glycosaminoglycans and therefore compromise the function of one specific class of glycoconjugates, proteoglycans. These findings establish the importance of proteoglycans and their associated glycosaminoglycans in epithelial morphogenesis and patterning during C. elegans development.

Delineating developmental and metabolic pathways in vivo by expression profiling using the RIKEN set of 18,816 full-length enriched mouse cDNA arrays

We have systematically characterized gene expression patterns in 49 adult and embryonic mouse tissues by using cDNA microarrays with 18,816 mouse cDNAs. Cluster analysis defined sets of genes that were expressed ubiquitously or in similar groups of tissues such as digestive organs and muscle. Clustering of expression profiles was observed in embryonic brain, postnatal cerebellum, and adult olfactory bulb, reflecting similarities in neurogenesis and remodeling. Finally, clustering genes coding for known enzymes into 78 metabolic pathways revealed a surprising coordination of expression within each pathway among different tissues. On the other hand, a more detailed examination of glycolysis revealed tissue-specific differences in profiles of key regulatory enzymes. Thus, by surveying global gene expression by using microarrays with a large number of elements, we provide insights into the commonality and diversity of pathways responsible for the development and maintenance of the mammalian body plan.