BatNet: a 6LoWPAN-based sensors and actuators network

Improving energy efficiency in buildings is one of the goals of the Smart City initiatives and a challenge for the European Union. This paper presents a 6LoWPAN wireless transducer network (BatNet) as part of an open energy management system. This network has been designed to operate in buildings, to collect environmental information (temperature, humidity, illumination and presence) and electrical consumption in real time (voltage, current and power factor). The system has been implemented and tested in the Energy Efficiency Research Facility at CeDInt-UPM.

Advances in optics for solid state lighting

Optics and LEDs, design Methods, design examples, conclusions

Freeform optics applications in photovoltaic concentration

Freeform surfaces are the key of the state-of-the-art nonimaging optics to solve the challenges in concentration photovoltaics. Different families (FK, XR, FRXI) will be presented, based on the SMS 3D design method and Köhler homogenization.

Design of spherical symmetric gradient index lenses

Spherical symmetric refractive index distributions also known as Gradient Index lenses such as the Maxwell-Fish-Eye (MFE), the Luneburg or the Eaton lenses have always played an important role in Optics. The recent development of the technique called Transformation Optics has renewed the interest in these gradient index lenses. For instance, Perfect Imaging within the Wave Optics framework has recently been proved using the MFE distribution. We review here the design problem of these lenses, classify them in two groups (Luneburg moveable-limits and fixed-limits type), and establish a new design techniques for each type of problem.

On the design of spherical gradient index lenses

Classical spherical gradient index (GRIN) lenses (such as Maxwell Fish Eye lens, Eaton lens, Luneburg lens, etc.) design procedure using the Abel integral equation is reviewed and reorganized. Each lens is fully defined by a function called the angle of flight which describes the ray deflection through the lens. The radial refractive index distribution is obtained by applying a linear integral transformation to the angle of flight. The interest of this formulation is in the linearity of the integral transformation which allows us to derive new solutions from linear combinations of known lenses. Beside the review of the classical GRIN designs, we present a numerical method for GRIN lenses defined by the Abel integral equation with fixed limits, which is an ill-posed problem.

Free-form optics for Fresnel-lens-based photovoltaic concentrators

The Concentrated Photovoltaics (CPV) promise relies upon the use of high-efficiency triple-junction solar cells (with proven efficiencies of over 44%) and upon high-performance optics that allow for high concentration concurrent with relaxed manufacturing tolerances (all key elements for low-cost mass production). Additionally, uniform illumination is highly desirable for efficiency and reliability reasons. All of these features have to be achieved with inexpensive optics containing only a few (in general no more than 2) optical elements. In this paper we show that the degrees of freedom using free-forms allow the introduction of multiple functionalities required for CPV with just 2 optical elements, one of which is a Fresnel lens.

Construyendo un espacio. Aproximación a la realidad de la práctica arquitectónica

El escenario dictado por los nuevos grados, exige a los docentes universitarios una reflexión sobre la relación entre su asignatura y el mundo profesional. En un panorama tan incierto como el actual, el fomento de determinadas competencias en el aula, como el aprendizaje a través del error, la responsabilidad por el trabajo realizado y la gestión de equipos, marcan la diferencia. Conscientes de esa responsabilidad, dos profesores de la Escuela de Arquitectura de la UEM, decidimos aunar esfuerzos y plantear conjuntamente un modelo de trabajo por etapas que barriera de forma profesional todo el proceso que requiere un proyecto. Dicho proyecto se centraría en un modelo cuyo desarrollo se ajustaba plenamente al programa de la asignatura. La primera fase arrancaría con el enunciado del ejercicio expuesto en formato de concurso. Cada alumno individualmente, debía desarrollar un modelo. En una segunda fase, una vez elegidas las propuestas ganadoras, se involucraría a toda la clase en la ejecución real de dichos modelos según los parámetros planteados en el ejercicio. Este simulacro de realidad en el ámbito universitario, contribuyó al entendimiento por parte de los alumnos de los criterios de evaluación competencial que dicta la titulación y nuestra responsabilidad frente a la sociedad.

Informe que propuso a la ... Reyna ... Ioseph Gil de Torres, Ciudadano, y Sindico de la ... Ciudad de Valencia, embiado por aquella, y su insigne Consejo Consejo General en el año 1674

En el texto aparece la fecha de 1675

Memorial a la S.C.R. Magestad del Rey ... por parte del Estamento Eclesiástico del Reyno de Valencia

Autor tomado del fin del texto

Nos Pere Marti preuere sot sacrista d[e]la seu rege[n]t de Vicari G[e]neral ... aq[ue]st flagell de pestile[n]cia p[er] la sua special intercessio ... dona[ra] ... ... p[er] q[ue] sia special intercessor y aduocat n[ost]re co[n]tra aq[ue]st flagell de pestilencia ...

Texto datado: "Datis Vale[n]cia pr[incip]ia Julij M.D.X.X.X", tomado de final del texto

Carta del Doctor D. Matheo de la Vega y Xea a un amigo en que le da noticia de las fiestas que la juventud valenciana ... consagró a la reyna del cielo en su concepcion en Gracia, y ... San Luis Gonzaga ... en los dias 20, 21 y 22 de junio de ... 1744

Hay un ejemplar encuadernado con: VILLANCICOS que se han de cantar la noche de Nauidad, en la Iglesia Metropolitana de Valencia, este año de 1687 (XVIII/211).

Ensayos Oratorios

contiene : La Concepcion Purissima de la Virgen Maria Madre de Dios. Accion de gracias por el nacimiento de Nuestro Señor Jesuchristo. Oracion a Jesuchristo redentor nuestro en su inefable Passion. Oracion en alabanza de las obras de diego Saavedra Fajardo ... Oracion en que se exhorta a seguir la verdadera idea de la eloquencia española. Oracion de Dion Chrisostomo ...

Historia del Santuario de Nuestra Señora de la Misericordia y de la Fuente de la Vella sito en el termino de la Villa Real de Cati, del Obispado de Tortosa, en el Reyno de Valencia

Sign.: A-B8, A-O8

Relativistic screened hydrogenic radial integrals

The computation of dipole matrix elements plays an important role in the study of absorption or emission of radiation by atoms in several fields such as astrophysics or inertial confinement fusion. In this work we obtain closed formulas for the dipole matrix elements of multielectron ions suitable for using in the framework of a Relativistic Screened Hydrogenic Model.

SMS freeforms for illumination

SMS 3D (simultaneous multiple surfaces in their three-dimensional version) is a well-known design method comprising two freeform surfaces that allow the perfect coupling of two wavefronts with another two. The design algorithm provides a collection of line pairs on both surfaces (called SMS spines), whose three-dimensional shape seems arbitrary at first sight. This paper shows that the shapes of the spines are partially governed by applying the étendue conservation theorem to the biparametric bundle of rays linking the paired spines, which is one lesser known étendue invariants found by Poincaré. The resulting formulae for the spines in three-dimensional space happen to coincide with the conventional étendue formulas of two-dimensional geometry, like for instance, the Hottel formula.