Generación de vapor en un ferry

El siguiente proyecto, pretende realizar un estudio sobre la generación de vapor en un ferry, enconcreto en el Juan J. Sister, de la compañía Trasmediterránea. En él se explicará mediante el trabajo de campo y de investigación, el funcionamiento y los distintos equipos que hacen posible dicha generación. Para ello se ha divido el trabajo en diferentes capítulos. El en el primer capítulo se abordará los antecedentes históricos del vapor, hablando de las primeras máquinas de vapor. En el segundo hablaremos de los objetivos que se quiere lograr con este documento. En el siguiente se hablará de los medios utilizados para la obtención de la información, trabajo de campo y lectura de manuales y diferentes libros. Todo ello se explicará de una manera amena en la parte final, intentando que el lector entienda lo máximo posible, la generación de vapor en un ferry.The following project aims to carry out a study on the generation of steam in a ferry, specifically in the Juan J. Sister, of the Trasmediterránea company. In it, the operation and the different equipment that make this generation possible will be explained through field work and research. For this, the work has been divided into different chapters. The first chapter will address the historical background of steam, talking about the first steam engines. In the second, we will talk about the objectives to be achieved with this document. The next one will talk about the means used to obtain information, field work and reading manuals and different books. All this will be explained in a pleasant way in the final part, trying to make the reader understand as much as possible, the generation of steam on a ferry

Paul Rudolph and the project for the Finney Guest House

[EN] This article considers the status of the project for the Finney Guest House within the professional career of Paul Rudolph, and its relationship to two further projects carried out during the same period, the Revere Quality House and the Healy Guest House. In all three cases Roberta Healy Finney appeared as the client or promotor, which leads to the thought that the Finney House might be a precedent for the Healy House. This text comments on some of the best drawings made by Paul Rudolph in the 1940s, including an exercise in the form of a project that he completed under the direction of Walter Gropius, in partial fulfilment of the requirements for obtaining the degree of Master in Architecture at the University of Harvard.[ES] El artículo analiza la relevancia del proyecto de la Finney Guest House en la trayectoria profesional de Paul Rudolph, y su relación con otros dos proyectos realizados en los mismos años, la Revere Quality House y la Healy Guest House. En los tres aparece como cliente o promotora Roberta Healy Finney, lo que lleva a pensar que la Finney House pudiera ser un antecedente de la Healy House. En el texto se comentan algunos de los mejores dibujos realizados por Paul Rudolph en los años cuarenta, entre ellos un ejercicio de proyectos realizado, bajo la dirección de Walter Gropius, para obtener la titulación de Máster en Arquitectura por la Universidad de Harvard.Moral García, Á.; González Medina, J.; Galván Desvaux, N. (2021). Paul Rudolph y el proyecto de la Finney Guest House. EGA Expresión Gráfica Arquitectónica. 26(43):110-123. https://doi.org/10.4995/ega.2021.15082OJS1101232643BELL, Eugenia (ed.). 2020. Paul Rudolph. Insipiration and Process in Architecture. Hudson, NY: Princeton Architectural Press.BJONE, Christian. 2002. First Houses: The Grid, the Figure and the Void. Chichester: John Wiley & Sons.CERVERO SÁNCHEZ, Noelia. 2019. "El dibujo. Primera construcción de la arquitectura de Paul Rudolph", in VLC arquitectura. vol. 6, Issue 1, pp. 67-95. https://doi.org/10.4995/vlc.2019.10967DOMIN, Christopher, KING, Joseph. 2002. Paul Rudolph. The Florida Houses. New York: Princeton Architectural Press. https://doi.org/10.1007/1-56898-647-5DOMINGO CALABUIG, Déborah. 2009. "La modernidad sureña: Paul Rudolph en Florida", en Jorge Torres Cueco (editor), Casa por Casa: reflexiones sobre el habitar, pp. 90-103.Valencia: General Ediciones de Arquitectura.GALVÁN DESVAUX, Noelia, ÁLVARO-TORDESILLAS, Antonio, JIMÉNEZ JIMÉNEZ, Marina. 2018. "Paul Rudolph: arquitecturas dibujadas en el paisaje de California", en Zarch: Journal of interdisciplinary studies in Architecture and Urbanism. nº 10, pp. 100-113. https://doi.org/10.26754/ojs_zarch/zarch.2018102934HOWEY, John. 1997. The Sarasota School of Architecture: 1941-1966. Cambridge: The MIT Press.MOLOHY-NAGY, Sibyl. 1971. La Arquitectura de Paul Rudolph. Barcelona: Gustavo Gili.NAKAMURA, Toshio (ed.). 1977. Paul Rudolph: 1946-1974. Tokio: A+U Publishing.ROHAN, Timothy M. 2014. The Architectural of Paul Rudolph. New Haven: Yale University Press

Simulation of the phonon-limited electron mobility in multi-layer MoS 2 field-effect transistors

We study the electron mobility in Metal-Insulator-Semiconductor Field-Effect-Transistors which use multi-layer MoS 2 as channel. The electrostatic behavior is calculated by self-consistently solving the 1D Poisson and Schrödinger equations under the effective mass approximation. Phonon-limited electron mobility is then calculated solving the Boltzmann Transport Equation under the Momentum Relaxation Time approximation for different device sizes and bias conditions

Optimal management of bio-based energy supply chains under parametric uncertainty through a data-driven decision-support framework

This paper addresses the optimal management of a multi-objective bio-based energy supply chain network subjected to multiple sources of uncertainty. The complexity to obtain an optimal solution using traditional uncertainty management methods dramatically increases with the number of uncertain factors considered. Such a complexity produces that, if tractable, the problem is solved after a large computational effort. Therefore, in this work a data-driven decision-making framework is proposed to address this issue. Such a framework exploits machine learning techniques to efficiently approximate the optimal management decisions considering a set of uncertain parameters that continuously influence the process behavior as an input. A design of computer experiments technique is used in order to combine these parameters and produce a matrix of representative information. These data are used to optimize the deterministic multi-objective bio-based energy network problem through conventional optimization methods, leading to a detailed (but elementary) map of the optimal management decisions based on the uncertain parameters. Afterwards, the detailed data-driven relations are described/identified using an Ordinary Kriging meta-model. The result exhibits a very high accuracy of the parametric meta-models for predicting the optimal decision variables in comparison with the traditional stochastic approach. Besides, and more importantly, a dramatic reduction of the computational effort required to obtain these optimal values in response to the change of the uncertain parameters is achieved. Thus the use of the proposed data-driven decision tool promotes a time-effective optimal decision making, which represents a step forward to use data-driven strategy in large-scale/complex industrial problems.Peer ReviewedPostprint (published version

El taller como estrategia de enseñanza para el fortalecimiento de la habilidad inferencial de textos escritos narrativos en alumnos del grado quinto de la Institución Educativa Simón Bolívar de Itagüí

Teniendo en cuenta que leer es importante, pero lo es más, comprender lo que se lee, esta investigación buscó fortalecer la habilidad inferencial de textos escritos narrativos, a partir de la implementación de una estrategia de enseñanza (El Taller) en los alumnos del grado 5° de la institución educativa Simón Bolívar de Itagüí. La investigación fue de tipo mixta y se desarrolló a partir de un diseño investigación - acción con una muestra comprendida por 16 alumnos. Para la recolección de datos se aplicó una encuesta sobre motivación lectora (MRQ – 2004) y la prueba CLP (Complejidad Lingüística Progresiva) pre – test y post – test, identificando que la implementación del Taller como estrategia de enseñanza fortaleció significativamente la habilidad inferencial, puesto que el 81.25% de los alumnos mejoraron el desempeño en la elaboración de los tres tipos de inferencia (asociativa, predictiva y explicativa)

Regulation of Protein Secretion Systems Mediated by Cyclic Diguanylate in Plant-Interacting Bacteria

The ubiquitous second messenger cyclic diguanylate (c-di-GMP) is involved in the regulation of different processes in bacteria. In phytopathogens, intracellular fluctuations in the concentration of this molecule contribute to the lifestyle switching from a motile and virulent stage to a sessile and biofilm-forming phase. Among the virulence mechanisms used by bacterial pathogens, different specific type secretion systems (TSSs) and the effector proteins that they translocate are included. Some of these TSS are conceived to suppress host immune responses during bacterial colonization. The modulation of the expression of secretion systems components and/or effector proteins can be influenced by c-di-GMP levels at transcriptional, translational, or post-translational levels and can take place directly by binding to specific or global regulators, or via transducer proteins. Different genera of plant-interacting bacteria have been analyzed to shed some light in the implications of c-di-GMP in the regulation of host plant colonization through protein secretion systems. Expression of (1) adhesins secreted by Type 1 secretion systems to bind the host plant in Pectobacterium (formerly Erwinia) and some beneficial Pseudomonas strains; (2) catalytic exoproteins delivered by Type 2 secretion systems to break plant cell wall in Dickeya; (3) effectors secreted by Type 3 secretion systems to suppress plant immunity in Xanthomonas; or (4) the activity of Type 6 secretion systems to export an ATPase in Pseudomonas, are finely tuned by c-di-GMP levels. In this minireview, we summarize the knowledge available about the implications of c-di-GMP in the regulation of protein secretion in different plant-interacting bacteria.Spanish Ministry of Economy, Industry and Competitivity BIO2016-78409-

Antipatterns: A Compendium of Bad Practices in Software Development Processes

This Article presents a set of software process antipatterns, which arise as a result of bad practices within application development processes. Process AntiPatterns warn us about the harmful effects that may arise in projects, and also describe the features that identify them. The proposed antipatterns provide a catalog that serves as a vocabulary for communication among project participants. Such Antipatterns can be implemented through software tools in order to keep better record of their implementation. Additionally, a tool that can operate under GPL (General Public license) is provided for this purpose

Patterns of Software Development Process

This article presents a set of patterns that can be found to perform best practices in software processes that are directly related to the problem of implementing the activities of the process, the roles involved, the knowledge generated and the inputs and outputs belonging to the process. In this work, a definition of the architecture is encouraged by using different recurrent configurations that strengthen the process and yield efficient results for the development of a software project. The patterns presented constitute a catalog, which serves as a vocabulary for communication among project participants [1], [2], and also can be implemented through software tools, thus facilitating patterns implementation [3]. Additionally, a tool that can be obtained under GPL (General Public license) is provided for this purpose

El atelier de litterature française: Una experiencia de acercamiento intercultural a través de la lectura

El presente trabajo describe la experiencia desarrollada durante cinco años en la que a través de la lectura compartida de obras literarias francófonas de origen árabe, en especial marroquí, y la elaboración de un blog (http://inmatelier.wordpress.com), se ha pretendido contribuir a estrechar lazos de amistad entre el mundo árabe y el occidental mejorando la comprensión de los puntos de vista de cada cultura sobre una misma realidad

A Novel Analysis of Periodic Structures Based on Loaded Transmission Lines

Periodically loaded transmission lines are characterized by a frequency response with regular pass and stopbands. Interestingly, each of the passbands exhibits a peculiar comb-alike behavior, in which again, nested (or internal) pass and stopbands can be identified. In this work, we focus our attention on the effect that changing the characteristics of the periodic load (which is a varactor capacitance in our case) has in this peculiar response of the structure, providing a novel and detailed analysis of such bands. The control of the response of the structure when changing the properties of the load allows to adjust the transmission characteristics of the circuit once it is fabricated. To this purpose, we derive the design equations of the periodically loaded structures, obtaining the expressions which govern the position and number of the transmission peaks, i.e., the points where |S21| = 1 for both cases, the frequency sweep and the capacitance sweep. We experimentally validate our analysis by fabricating a periodic structure with five unit cells and compare the measurements against both theoretical results and circuit simulations to an excellent agreement. The present analysis paves the way towards further exploitation of these kind of structures for the design of different microwave applications such as tunable filters or phase shiftersMCIN/AEI/PTA grantPTA2020-018250-IPAIDI 2020European Social Fund Operational Programme 2014-2020 under Grant 20804Ministerio de Universidades under Grant CAS21/00483FEDER/Junta de Andalucía-Consejería de Transformación Económica, Industria, Conocimiento y Universidades under Grants A-TIC-646-UGR20, B-RNM-375-UGR18P20_00633MCIN/AEI/10.13039/501100011033European Union “NextGenerationEU”/PRTRPID2020-116518GB-I00TED2021-129769B-I00TED2021-129938B-I0