Presentation and discussion of the UAM/exercise I-1b: "Pin-Cell Burn-Up Benchmark" with the hybrid method

The aim of this work is to present the Exercise I-1b ���pin-cell burn-up benchmark��� proposed in the framework of OECD LWR UAM. Its objective is to address the uncertainty due to the basic nuclear data as well as the impact of processing the nuclear and covariance data in a pin-cell depletion calculation. Four different sensitivity/uncertainty propagation methodologies participate in this benchmark (GRS, NRG, UPM, and SNU&KAERI). The paper describes the main features of the UPM model (hybrid method) compared with other methodologies. The requested output provided by UPM is presented, and it is discussed regarding the results of other methodologies.

Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1

In the framework of the OECD/NEA project on Benchmark for Uncertainty Analysis in Modeling (UAM) for Design, Operation, and Safety Analysis of LWRs, several approaches and codes are being used to deal with the exercises proposed in Phase I, ���Specifications and Support Data for Neutronics Cases.��� At UPM, our research group treats these exercises with sensitivity calculations and the ���sandwich formula��� to propagate cross-section uncertainties. Two different codes are employed to calculate the sensitivity coefficients of to cross sections in criticality calculations: MCNPX-2.7e and SCALE-6.1. The former uses the Differential Operator Technique and the latter uses the Adjoint-Weighted Technique. In this paper, the main results for exercise I-2 ���Lattice Physics��� are presented for the criticality calculations of PWR. These criticality calculations are done for a TMI fuel assembly at four different states: HZP-Unrodded, HZP-Rodded, HFP-Unrodded, and HFP-Rodded. The results of the two different codes above are presented and compared. The comparison proves a good agreement between SCALE-6.1 and MCNPX-2.7e in uncertainty that comes from the sensitivity coefficients calculated by both codes. Differences are found when the sensitivity profiles are analysed, but they do not lead to differences in the uncertainty.

UPM Results BWR-PWR Exercise I-1 by MCNP5 code

The perturbation approach relies in principle on a unique ���NJOY + MCNP5 + SUSD3D���calculation. The inputs are the geometry MCNP5 input file and an ENDF file containing covariances.

Burnup Uncertainty Analysis for PWR-HFP Exercise I-1

Burn-up credit analyses are based on depletion calculations that provide an accurate prediction of spent fuel isotopic contents, followed by criticality calculations to assess keff

Arquitectura ��ptima: Cuatro medios pr��cticos para optimizar proyectos de arquitectura

La investigaci��n trata de mostrar cuatro acciones habitualmente empleadas al proyectar arquitectura. La tesis narra el discurso que construyen cuatro acciones como mecanismos optimizadores, fundamentales, activos y necesarios cuando creamos nuevos proyectos. En este trabajo se estudian en profundidad cuatro acciones optimizadoras a trav��s de numerosos casos de estudio. Se estudia tambi��n la presencia de estas acciones en otros campos creativos, como la biolog��a, el arte, la literatura, la filosof��a, la matem��tica o la psicolog��a de la creatividad. Se busca qu�� tienen en com��n estas cuatro acciones y se indaga sobre la posible narraci��n que construyen entre ellas. La mayor parte de los textos que constituyen este trabajo se escriben en un formato pr��ximo al del ensayo, empleando tiempos verbales presentes evitando los tiempos verbales pret��ritos o imperfectos para potenciar la acci��n a trav��s el estilo narrativo. La investigaci��n se ha realizado a partir de fuentes bibliogr��ficas existentes en numerosas bibliotecas. Se han llevado a cabo estudios de campo realizados a trav��s de entrevistas personales a interlocutores expertos, no s��lo de teor��a arquitect��nica sino tambi��n de pr��cticas constructivas, as�� como visitas a lugares ��ntimamente relacionados con el tema de investigaci��n. Se ha completado el estudio de casos con ejercicios pr��cticos realizados por el autor de esta tesis, para profundizar con la propia investigaci��n por empat��a con los autores estudiados. La investigaci��n bibliogr��fica principal se ha desarrollado en las bibliotecas de la Universidad Polit��cnica de Madrid, de la Universidad de Alicante, de la Universidad Aut��noma de Madrid, de la Universidad Europea de Madrid, de la Universidad Camilo Jos�� Cela, de la Universidad Complutense de Madrid, de la Columbia University, de la Harvard University, de la Delft University, de Heidelberg University, de la Biblioteca Central de Madrid y de la Regional de Murcia, as�� como de la del COAMU. Tambi��n se ha utilizado recursos bibliogr��ficos propios. La metodolog��a utilizada muestra desde diferentes perspectivas el problema de las acciones optimizadoras, desde obras art��sticas, pasando por ejemplos de arquitectura construida hasta ejercicios puramente intelectuales. La acumulaci��n ha sido el m��todo de obtenci��n de conocimiento de esta tesis. Se han acumulado conocimientos y posteriormente se ha profundizado, reflexionando sobre los datos que se han ido obteniendo. Al profundizar se enlazan unas pruebas con otras, hilando y ensambl��ndolas en un discurso que hace continuo y coherente la aparici��n de cada caso estudiado. Estas entidades probatorias son acciones que han sido aplicadas frecuentemente por distintas generaciones de autores que proyectan utilizando alguna de estas cuatro acciones. Partimos de una extensa bibliograf��a general y de otra espec��fica. A trav��s de citas e im��genes se muestra el repertorio de objetos y textos estudiados. Los casos de estudio seleccionados exponen los efectos que produce cada acci��n en el ejercicio del proyectar. Se ha estudiado la necesidad de cada acci��n en todas y cada una de las partes del ciclo creativo del proyecto, tanto en pr��cticas imaginadas como en construidas, de los autores que proyectan. Se citan y se interpretan las descripciones de bi��logos, soci��logos, antrop��logos, psic��logos, escritores, artistas, arquitectos, matem��ticos, ingenieros, f��sicos, m��dicos y fil��sofos en los cuales estas acciones se encuentran conscientemente incorporadas en su procedimiento de proyectar y de pensar. Por ��ltimo, hemos obtenido unos resultados adecuados a la metodolog��a empleada y a los objetivos planteados gracias a la acumulaci��n y clasificaci��n de pruebas. Los resultados se exponen a modo de discursos conclusivos con un intencionado car��cter abierto que despliega nuevas posibles nuevas v��as de investigaci��n entorno a los temas estudiados. ABSTRACT. The research seeks to show four commonly used actions in designing architecture. Thesis recounts the speech that built four actions like optimizer, fundamental, active and necessary mechanisms when we create new projects. In this work it studies in depth four optimizer actions through numerous case studies. Also, it considers the presence of these actions in other creative fields, such as biology, art, literature, philosophy, mathematics or psychology of creativity. It is intended what these four actions have in common and it explores the possible narrative constructed among them. Most of the texts that constitute this work are written in a format close to the essay, using present tenses avoiding past or imperfect tenses of enhancing the action through the narrative style. Research has been done from literature sources available in numerous libraries. Field studies have been carried out through personal interviews with expert speakers, not just of architectonic theory but also from constructive practices, as well as visits to sites closely related to the research topic. case studies with practical exercises conducted by the author of this thesis has been completed, to deepen with the own research by empathy with the studied authors. Main bibliographical investigation has been developed in the libraries of UPM, UA, UAM, UEM, the CJC, the UCM, Columbia University, Harvard University Delft University, Heidelberg University, Madrid Central Library, Regional Murcia Library and COAMU Library. Also it has been used own bibliographical resources. Methodology shows from different perspectives the problem of optimizers actions, from art, passing through examples of architecture built up to pur�� intellectual exercise. Accumulation has been the method of obtaining knowledge of this thesis. it has been accumulated knowledge and later it has been deepened, reflecting on the data that have been obtained. By deepening tests are linked with other, spinning and locking into a discourse that makes continuous and consistent the development of each case study. These evidentiary entities are actions that have been frequently applied by different generations of authors who project using some of these four stocks. We leave from an extensive general bibliography and another specific one. Through quotes and pictures it shows the repertoire of objects and texts studied. The selected study cases set out the effects that each action produces in the exercise of projecting. It has studied the need of each action in every parts of creative cycle of the project, both imagined as constructed practices, by the authors who project. It is quoted and interpreted the descriptions of biologists, sociologists, anthropologists, psychologists, writers, artists, architects, mathematicians, engineers, physicists, physicians and philosophers in which these actions are consciously incorporated into his projecting and thinking procedure. Finally, we have obtained adequate results to the used methodology and to the stated objectives through the accumulation and classification of evidence. The results are presented as conclusive speeches with an intentional open character that unfolds new possible research routes around the studied topics.

Ion-beam damage induced in SiO2: Excitonic mechanisms under heavy electronic excitation

The Centro de Micro-An��lisis de Materiales (CMAM) in the Universidad Aut��noma de Madrid is carrying out an extensive research program on the processes induced by high energy heavy mass ions (SHI) on dielectric materials and their photonic applications [1?21]. A significant part of this activity constitutes a relevant contribution to the scientific program associated to the TECHNOFUSION project. It is performed in collaboration with the Instituto de Fusion Nuclear at the UPM, the CIEMAT, the Departamento de F��sica de Materiales at UAM and several other national institutions (INTA) and international laboratories (GANIL, France), Legnaro Italy, Grenoble?. The program has led to a large number of publications in reputed international journals.

HERMES: A user-friendly connectivity analysis software

The analysis of the interdependence between time series has become an important field of research, mainly as a result of advances in the characterization of dynamical systems from the signals they produce, and the introduction of concepts such as Generalized (GS) and Phase synchronization (PS). This increase in the number of approaches to tackle the existence of the so-called functional (FC) and effective connectivity (EC) (Friston 1994) between two, (or among many) neural networks, along with their mathematical complexity, makes it desirable to arrange them into a unified toolbox, thereby allowing neuroscientists, neurophysiologists and researchers from related fields to easily access and make use of them.

M��xico: partida de ajedrez. Mario Pani

Se ensaya aqu�� c��mo construye su mirada el arquitecto Mario Pani Darqui (M��xico, D.F., 1911-1993), cuya visi��n es la del jugador de ajedrez: estrat��gica, cenital y transversal, profunda y extra��ada, inci- siva y extensa, mim��tica y contrapuesta. Todo al mismo tiempo. Con base en esta reconstrucci��n de su forma de ver ���crucial para el entendimiento de la arquitectura y el urbanismo de M��xico en el si- glo XX��� se plantea una acci��n conceptual en el entorno del r��o Manzanares en Madrid. Un paisaje espiritual, silente, que a trav��s de tres situaciones radicales obliga a quien lo contempla a un ejercicio instant��neo de meditaci��n. Se ejecuta y se cartograf��a, dando como resultado una aproximaci��n sen- sible sobre c��mo intervenir en el paisaje y su registro.

Madrid: Un panorama poco alentador para la conservaci��n de las especies vegetales

Palabras clave: Madrid, Coslada, Cynara tournefortii, Malvella sherardiana, Teucrium spinosum, Convolvus humilis

Preparing Exercise I-3: Optimization of cross-section tables using sensitivity coefficients in COBAYA3

Preparing Exercise I-3: Optimization of cross-section tables using sensitivity coefficients in COBAYA3

GRS Results for the Burnup Pin-cell Benchmark Propagation of Cross-Section, Fission Yields and Decay Data Uncertainties

GRS Results for the Burnup Pin-cell Benchmark Propagation of Cross-Section, Fission Yields and Decay Data Uncertainties

UPM Activities on Sensitivity and Uncertainty Analysis of Assembly Depletion

UPM Activities on Sensitivity and Uncertainty Analysis of Assembly Depletion

Analysis of Neutron Thermal Scattering Data Uncertainties in PWRs

Analysis of Neutron Thermal Scattering Data Uncertainties in PWRs

Application of a Bayesian/Generalised Least-Squares method to generate correlations between independent neutron fission yield data

Fission product yields are fundamental parameters for several nuclear engineering calculations and in particular for burn-up/activation problems. The impact of their uncertainties was widely studied in the past and valuations were released, although still incomplete. Recently, the nuclear community expressed the need for full fission yield covariance matrices to produce inventory calculation results that take into account the complete uncertainty data. In this work, we studied and applied a Bayesian/generalised least-squares method for covariance generation, and compared the generated uncertainties to the original data stored in the JEFF-3.1.2 library. Then, we focused on the effect of fission yield covariance information on fission pulse decay heat results for thermal fission of 235U. Calculations were carried out using different codes (ACAB and ALEPH-2) after introducing the new covariance values. Results were compared with those obtained with the uncertainty data currently provided by the library. The uncertainty quantification was performed with the Monte Carlo sampling technique. Indeed, correlations between fission yields strongly affect the statistics of decay heat. Introduction Nowadays, any engineering calculation performed in the nuclear field should be accompanied by an uncertainty analysis. In such an analysis, different sources of uncertainties are taken into account. Works such as those performed under the UAM project (Ivanov, et al., 2013) treat nuclear data as a source of uncertainty, in particular cross-section data for which uncertainties given in the form of covariance matrices are already provided in the major nuclear data libraries. Meanwhile, fission yield uncertainties were often neglected or treated shallowly, because their effects were considered of second order compared to cross-sections (Garcia-Herranz, et al., 2010). However, the Working Party on International Nuclear Data Evaluation Co-operation (WPEC)

Simbiosis bacteriana y conservaci��n de flora amenazada: el caso del Lupinus mariae-josephae.

Lupinus mariae-josephae H. Pascual es un altramuz end��mico de un reducido n��mero de sitios en la Comunidad Valenciana, donde coloniza sustratos de ?terra rossa? sobre afloramientos de lapiaz. Descrito en 2004 a partir de plantas cultivadas, no pudo localizarse en campo hasta 2006, y el hallazgo de sus poblaciones ha estado estrechamente ligado a top��nimos relativos a su nombre popular, ?tram��s? en valenciano. Se ha demostrado la clara independencia gen��tica, y en consecuencia el valor como ?buen taxon? de esta especie. Hasta ahora se han caracterizado y censado cinco poblaciones silvestres en diferentes localidades, y en todas ellas se observan fuertes fluctuaciones interanuales de sus efectivos, a veces acompa��adas de importantes diferencias de vigor de los ejemplares; tres de estas poblaciones est��n actualmente protegidas mediante sendas microrreservas de flora. Algunos de estos n��cleos poblacionales se componen en a��os concretos de formas poco vigorosas, que a menudo s��lo producen 1-2 frutos con 1-2 semillas; por el contrario, las formas m��s vigorosas pueden producir varias docenas de semillas. La emergencia de pl��ntulas se produce con gran probabilidad tras a��os de progresiva escarificaci��n de la cubierta de las semillas en el suelo, y probablemente se acelera por procesos de reducci��n de la cubierta vegetal como los incendios forestales. La germinaci��n experimental ex situ s��lo se consigue satisfactoriamente mediante el pretratamiento de escaldado de las semillas.