Recursos de colección

E-PrintsUCM (91.396 recursos)

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Tipo = Documento de trabajo o Informe técnico

Mostrando recursos 1 - 20 de 65

  1. Claves para la creación de material educativo digital autoformativo

    Fernández-Pampillón Cesteros, Ana
    Este documento recoge, en un formato de pregunta-respuesta, la experiencia real sobre creación y uso de material educativo digital autoformativo. Entendemos por material educativo digital autoformativo cualquier entidad digital que tiene definido al menos un objetivo de aprendizaje y que ha sido creado para facilitar el aprendizaje autónomo. Las preguntas que se tratan son: ¿Por qué crear material autoformativo?, ¿Qué tiene de diferente el material didáctico autoformativo respecto al formativo “presencial”?, ¿Cómo crear material autoformativo (un buen material autoformativo ;-)?, otras cuestiones a tener en cuenta que… y, finalmente, un breve anexo sobre cómo declarar y respetar las condiciones de...

  2. El Diccionario funcionalista como instrumento de aprendizaje de una Lengua: experiencias previas a la digitalización

    Márquez Cruz, Manuel; Fernández-Pampillón Cesteros, Ana
    Este documento presenta los resultados de una primera investigación sobre el uso de un modelo de diccionario latino-castellano de corte funcionalista acompañado por una metodología docente adecuada para mejorar los resultados académicos de los estudiantes de la lengua Latina. Para evaluar esta hipótesis se ha diseñado y llevado a cabo un caso de estudio con alumnos de Educación Secundaria, con edades comprendidas entre los quince y los dieciséis años, que cursan la asignatura de Latín. El objetivo concreto era demostrar si el uso único del diccionario propuesto constituye una herramienta de apoyo suficiente en las labores de análisis lingüístico y...

  3. Generador de informes HTML con OdA-Clavy. Guía Técnica.

    Gayoso Cabada, Joaquín; Fernández-Pampillón Cesteros, Ana; Sierra Rodríguez, Jose Luis
    El Generador de Informes OdA (en adelante GI-OdA) es un paquete software que permite, mediante la conexión con la plataforma Clavy, la generación de documentos HTML con la información seleccionada por el usuario de una colección de Objetos Digitales alojados en OdA.

  4. Exportador/Actualizador de datos OdA-XLS. Guía Técnica

    Gayoso Cabada, Joaquín; Fernández-Pampillón Cesteros, Ana; Sierra Rodríguez, Jose Luis
    Paquete software para la exportación, la importación y actualización de la información contenida en las colecciones de Objetos Digitales de los repositorios OdA a hojas de cálculo XLS mediante la conexión con la plataforma Clavy

  5. Mathematical framework for pseudo-spectra of linear stochastic difference equations

    Bujosa Brun, Marcos; Bujosa Brun, Andrés; García Ferrer, Antonio
    Although spectral analysis of stationary stochastic processes has solid mathematical foundations, this is not always so for some non-stationary cases. Here, we establish a rigorous mathematical extension of the classic Fourier spectrum to the case in which there are AR roots in the unit circle, ie, the transfer function of the linear time-invariant filter has poles on the unit circle. To achieve it we: embed the classical problem in a wider framework, the Rigged Hilbert space, extend the Discrete Time Fourier Transform and defined a new Extended Fourier Transform pair pseudo-covariance function/pseudo-spectrum. Our approach is a proper extension of the...

  6. Costs for conventional and renewable fuels and electricity in the worldwide transport sector: a mean-variance portfolio approach

    Guerrero-Lemus, Ricardo; Marrero, Gustavo A.; Puch, Luis A.
    In this paper we analyze the role of changes in the fuel mix on emissions reduction and the diversification of risks associated to rising prices of energy. To this purpose we evaluate the average cost and the cost volatility of alternative fuel combinations in the road transport sector by means of the Mean-Variance Portfolio Theory. The results suggest big gains in diversification of risks and emissions reduction associated with shifts away the current fuel mix, which is more than 90% concentrated worldwide in fossil fuels. Those shifts are discussed vis à vis the policy recommendations of the International Energy Agency on fuel...

  7. El Archivo Personal de Ildefonso Martínez y Fernández en la Biblioteca Histórica de la Universidad Complutense de Madrid

    Cabello Martín, Mercedes
    Descripción e inventario del Archivo Personal de Ildefonso Martínez y Fernández, que se encuentra en la Biblioteca Histórica de la Universidad Complutense de Madrid. Para realizar la descripción se ha seguido la Norma Internacional de Descripción Archivística ISAD(G).

  8. Housing investment in Spain: has it been the main engine of growth?

    Cosculluela Martínez, Carolina; Flores de Frutos, Rafael
    This paper studies dynamic responses of employment and GDP growth to a permanent, uni-tary shock in the housing capital stock for the Spanish economy. It quantifies the importance of this variable in the boom experienced by the Spanish economy during the pre-crisis years. Results confirm that building industry has been the most important engine for output and labour growth.

  9. Interpreting Markups in Spanish Manufacturing: The Exponential Model

    Corchón, Luis C.; Moreno Martín, Lourdes
    In this paper we attempt to rationalize markups in a sample of Spanish manufacturing by assuming a representative consumer, proft-maximizing firms and constant returns to scale. We find that the standard forms of demand (CES and linear) do not provide a good explanation of markups. In contrast, a model where the representative consumer has an exponential utility function yields results that match data more closely.

  10. From general State-Space to VARMAX models

    Casals Carro, José; García Hiernaux, Alfredo; Jerez Méndez, Miguel
    Fixed coecients State-Space and VARMAX models are equivalent, meaning that they are able to represent the same linear dynamics, being indistinguishable in terms of overall fit. However, each representation can be specically adequate for certain uses, so it is relevant to be able to choose between them. To this end, we propose two algorithms to go from general State-Space models to VARMAX forms. The rst one computes the coecients of a standard VARMAX model under some assumptions while the second, which is more general, returns the coecients of a VARMAX echelon. These procedures supplement the results already available in the literature...

  11. GFC-Robust Risk Management Strategies under the Basel Accord

    McAleer, Michael; Jimenez-Martin, Juan-Angel; Pérez Amaral, Teodosio
    A risk management strategy is proposed as being robust to the Global Financial Crisis (GFC) by selecting a Value-at-Risk (VaR) forecast that combines the forecasts of different VaR models. The robust forecast is based on the median of the point VaR forecasts of a set of conditional volatility models. This risk management strategy is GFC-robust in the sense that maintaining the same risk management strategies before, during and after a financial crisis would lead to comparatively low daily capital charges and violation penalties. The new method is illustrated by using the S&P500 index before, during and after the 2008-09 global...

  12. Optimal Risk Management Before, During and After the 2008-09 Financial Crisis

    McAleer, Michael; Jimenez-Martin, Juan-Angel; Pérez Amaral, Teodosio
    In this paper we advance the idea that optimal risk management under the Basel II Accord will typically require the use of a combination of different models of risk. This idea is illustrated by analyzing the best empirical models of risk for five stock indexes before, during,and after the 2008-09 financial crisis. The data used are the Dow Jones Industrial Average, Financial Times Stock Exchange 100, Nikkei, Hang Seng and Standard and Poor’s 500 Composite Index. The primary goal of the exercise is to identify the best models for risk management in each period according to the minimization of average...

  13. What Happened to Risk Management During the 2008-09 Financial Crisis?

    McAleer, Michael; Jimenez-Martin, Juan-Angel; Pérez Amaral, Teodosio
    When dealing with market risk under the Basel II Accord, variation pays in the form of lower capital requirements and higher profits. Typically, GARCH type models are chosen to forecast Value-at-Risk (VaR) using a single risk model. In this paper we illustrate two useful variations to the standard mechanism for choosing forecasts, namely: (i) combining different forecast models for each period, such as a daily model that forecasts the supremum or infinum value for the VaR; (ii) alternatively, select a single model to forecast VaR, and then modify the daily forecast, depending on the recent history of violations under the...

  14. Has the Basel II Accord Encouraged Risk Management During the 2008-09 Financial Crisis?

    McAleer, Michael; Jimenez-Martin, Juan-Angel; Pérez Amaral, Teodosio
    The Basel II Accord requires that banks and other Authorized Deposit-taking Institutions (ADIs) communicate their daily risk forecasts to the appropriate monetary authorities at the beginning of each trading day, using one or more risk models to measure Value-at-Risk (VaR). The risk estimates of these models are used to determine capital requirements and associated capital costs of ADIs, depending in part on the number of previous violations, whereby realised losses exceed the estimated VaR. In this paper we define risk management in terms of choosing sensibly from a variety of risk models, discuss the selection of optimal risk models, consider...

  15. State-Uncertainty preferences and the Risk Premium in the Exchange rate market

    Jimenez-Martin, Juan-Angel; Novales Cinca, Alfonso
    This paper introduces state-uncertainty preferences into the Lucas (1982) economy,showing that this type of preferences helps to explain the exchange rate risk premium. Under these preferences we can distinguish between two factors driving the exchange rate risk premium: “macroeconomic risk” and “the risk associated with variation in the private agents’ perception on the level of uncertainty”. State-uncertainty preferences amount to assuming that a given level of consumption will yield a higher level of utility the lower is the level of uncertainty perceived by consumers. Furthermore, empirical evidence from three main European economies in the transition period to the euro provides...

  16. Modelling the Growth and Volatility in Daily International Mass Tourism to Peru

    Divino, Jose Angelo; McAleer, Michael
    Peru is a South American country that is divided into two parts by the Andes Mountains. The rich historical, cultural and geographic diversity has led to the inclusion of ten Peruvian sites on UNESCO’s World Heritage List. For the potential negative impacts of mass tourism on the environment, and hence on future international tourism demand, to be managed appropriately require modelling growth rates and volatility adequately. The paper models the growth rate and volatility (or the variability in the growth rate) in daily international tourist arrivals to Peru from 1997 to 2007. The empirical results show that international tourist arrivals...

  17. Modelling Sustainable International Tourism Demand to the Brazilian Amazon

    Divino, Jose Angelo; McAleer, Michael
    The Amazon rainforest is one of the world’s greatest natural wonders and holds great importance and significance for the world’s environmental balance. Around 60% of the Amazon rainforest is located in the Brazilian territory. The two biggest states of the Amazon region are Amazonas (the upper Amazon) and Pará (the lower Amazon), which together account for around 73% of the Brazilian Legal Amazon, and are the only states that are serviced by international airports in Brazil’s North region. The purpose of this paper is to model and forecast sustainable international tourism demand for the states of Amazonas, Pará, and the...

  18. The Ten Commandments for Managing Value-at-Risk Under the Basel II Accord

    Jimenez-Martin, Juan-Angel; McAleer, Michael; Pérez Amaral, Teodosio
    Under the Basel II Accord, banks and other Authorized Deposit-taking Institutions (ADIs) are required to communicate their daily market risk estimates to the relevant national monetary authority at the beginning of each trading day, using one of a variety of Value-at-Risk (VaR) models to measure risk. The purpose of this paper is to provide a simple explanation and a set of prescriptions for managing VaR under the Basel II Accord. The commandments deal with understanding the Basel II colours, understanding the risk model before choosing, varying the choice of risk model,avoiding the green zone and being willing to violate, incurring...

  19. The Ten Commandments for Optimizing Value-at-Risk and Daily Capital Charges

    McAleer, Michael
    Credit risk is the most important type of risk in terms of monetary value. Another key risk measure is market risk, which is concerned with stocks and bonds, and related financial derivatives, as well as exchange rates and interest rates. This paper is concerned with market risk management and monitoring under the Basel II Accord, and presents Ten Commandments for optimizing Value-at-Risk (VaR) and daily capital charges, based on choosing wisely from: (1) conditional, stochastic and realized volatility; (2) symmetry, asymmetry and leverage; (3) dynamic correlations and dynamic covariances; (4) single index and portfolio models; (5) parametric, semiparametric and nonparametric models;...

  20. Thresholds, News Impact Surfaces and Dynamic Asymmetric Multivariate GARCH

    Caporin, Massimiliano; McAleer, Michael
    DAMGARCH is a new model that extends the VARMA-GARCH model of Ling and McAleer (2003) by introducing multiple thresholds and time-dependent structure in the asymmetry of the conditional variances. Analytical expressions for the news impact surface implied by the new model are also presented. DAMGARCH models the shocks affecting the conditional variances on the basis of an underlying multivariate distribution. It is possible to model explicitly asset-specific shocks and common innovations by partitioning the multivariate density support. This paper presents the model structure, describes the implementation issues, and provides the conditions for the existence of a unique stationary solution, and...

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