Mostrando recursos 1 - 20 de 1.618

  1. Economic structure of fishing activity: An analysis of mackerel fishery management in the Basque Country

    García-Enríquez, Javier; Universidad del País Vasco; Murillas-Maza, Arantza; AZTI. Unidad de Investigación Marina.; Arteche, Josu; Dpto. Economía Aplicada III (Econometría y Estadística) University of the Basque Country UPV/EHU.
    This paper analyses the activity of the Basque fleet during the mackerel fishing season and presents an economic analysis of the equilibrium of this fishery. It seeks to determine whether its economic structure represents an internal factor explaining the fishermen’s behaviour. The inverse demand function and the average cost function are therefore estimated. Moreover, the analysis conducted here also takes into account the institutional dimension by factoring in current fishery regulation measures. Conclusions are drawn as to whether the incentives provided by the management measures and the strategy of fishermen are optimal on the basis of the estimated economic functions.

  2. Sull'uso dei test in econometria

    Orsi, Renzo
    Si presentano le diverse utilizzazioni dei test in econometria e si considerano le critiche che ad essi vengono rivolte, in particolare con riguardo alle proprietà statiche di tali procedure. Viene precisato il concetto di replicazione in econometria, cercando di motivare perchè esso non venga utilizzato nei lavori di econometria applicata. Vengono precisate le relazioni esistenti tra la teoria economica e i dati empirici, in considerazione del fatto che la prima non si applica direttamente ai dati ma tra essa e i secondi si colloca il modello empirico. Al fine di tenere conto della natura non sperimentale dei dati economici viene...

  3. Paralelización de aplicaciones econométricas que requieren estimación de los modelos de elección discreta

    Trigila, Mariano; Di Pasquale, Ricardo
    En las últimas dos décadas, el uso eficiente del hardware para aplicaciones científicas fue creciendo en dificultad. Además, muchas de estas aplicaciones requieren mejorar el rendimiento del procesamiento y tratar datos masivos. Estos son sistemas complejos de implementar y en especial para aquellos que no son especialista en computación. Es necesario desarrollar e implementar abstracciones de programación de alto nivel que permitan modelos de programación simples de usar. Las aplicaciones econométricas que requieren modelos de elección discreta son aplicaciones de este tipo. En este proyecto, se aplicarán las metodologías para crear abstracciones de programación de alto nivel para extender el framework R, para...

  4. Generalized State-Dependent Models: A Multivariate Approach

    Heravi, Saeed; Easaw, Joshy; Golinelli, Roberto
    The main purpose of this paper is to develop generalized ‘State Dependent Models’ (SDM) in a multivariate framework for empirical analysis. This significantly extends the existing SDM which only allow univariate analysis following a simple AR process. The extended model enables greater possibility for empirical analysis of economic relationships. The principle advantage of SDM is that it allows for a general form of non-linearity and can be fitted without any specific prior assumption about the form of non-linearity. We describe the general structure of the SDM and the problem of its identification is also considered. Finally, we apply the algorithm...

  5. Modelos de desarrollo y sistemas de gestión pública: el SNIP peruano, 2000-2014

    Alegría Varona, Gonzalo Ricardo
    Esta Tesis tiene dos partes. La Primera Parte es Teórica y Metodológica y trata de la actual crisis de paradigma en las Ciencias Sociales, y de cómo se puede remontar con la Teoría del Pensamiento Complejo, siempre que sus propuestas se centren en modelos empíricos de Análisis de Redes Sociales debidamente matematizados y estadísticamente refrendados. La propuesta del tesista propone enriquecer el actual homo economicus, incorporando la importancia de las relaciones con el grupo (coactivas, coercitivas o motivacionales), a través de un nuevo objeto de estudio: los Proyectos. Es mediante los Proyectos, donde los individuos y los grupos en los...

  6. Metodologías de medición del riesgo de mercado♦

    John Jairo Salinas Ávila
    El riesgo financiero puede ser definido como la volatilidad de los resultados esperados. En particular, el riesgo de mercado se refiere a la posibilidad de sufrir pérdidas en los mercados financieros. Hasta el momento, se han propuesto en la literatura numerosas metodologías para medir el riesgo de mercado, aunque la inmensa mayoría de estas son variantes de tratamientos estadísticos paramétricos y no paramétricos. Merece destacar entre los primeros el método de varianzas-covarianzas y el de simulación Montecarlo, y entre los segundos el método de simulación histórica. El propósito de este artículo es realizar una valoración de las tres metodologías anteriores,...

  7. Price-Wage Dynamics is A Transition Economy: The Case of Poland

    Golinelli, Roberto; Orsi, Renzo
    In this paper we analyse the wage price relationship of an economy in transition characterized by important structural changes. It is known (see Perron 1989) that structural breaks in stationary time series can induce apparent unit roots. The stationarity analysis of the series employed in the present model is conducted jointly with the assumption that the breakpoint location is unknown. We follow a testing procedure recently proposed by Zivot and Andrews (1992). Cointegration analysis of wages and prices in presence of structural breaks permits to find empirical evidence in favour of two cointegration vectors involving prices and wages. Our analyses...

  8. Una aproximación hedónica al efecto de las preferencias por segregación en el precio del suelo urbano en Bogotá

    Leonardo Santana Viloria; Liliana Núñez Camargo
    El valor del suelo urbano se fija en función de variables de localización y entorno, pues su precio aumenta en la medida en que exista mayor acceso a vías principales, centros de comercio y servicios urbanos. Sin embargo, la búsqueda de distinción, expresada como preferencia por segregación socioeconómica, es otra variable que tiene incidencia en este valor. El presente artículo busca comprobar que esta preferencia es una variable significativa en la determinación del valor del suelo urbano residencial, usando la distancia a estratos socioeconómicos como una variable proxy de la preferencia por segregación, y estimando un modelo hedónico con herramientas...

  9. Multivariate Estimation of Exponential Affine Models of the Term Structure of Interest Rates

    Pastorello, Sergio
    In this paper I consider the estimation of multi-factor exponential affine models of the term structure of interest rates. I start with a survey of the empirical work on the term structure in continuous time, showing that in most cases the implementation of the models has not fully exploited the theoretical restrictions. I also show that these works have almost always focused on “generalizations” of the theoretical model based on the inclusion of measurement errors in bills and bonds prices. I then suggest two approaches to statistical inference: the first is based on the Kalman filter, while the second follows...

  10. Técnicas estadísticas espaciales y temporales para el análisis de la convergencia

    Pino Mejías, Miguel Ángel
    La presente tesis estudia los procesos de convergencia entre las economías, considerando las dos líneas principales de análisis que se han centrado históricamente en este fenómeno. En un primer gran bloque se procede a la revisión de los modelos econométricos clásicos, a la identificación de sus predicciones respecto a dichos procesos de crecimiento y al reconocimiento de los principales estudios empíricos realizados en este ámbito. En una segunda agrupación de contenidos, en consonancia con el desarrollo histórico de las investigaciones sobre la materia, se revisa el marco teórico que establece la econometría espacial y, de manera específica, se consideran distintas...

  11. El Congreso de Praga

    Aguirre de Yraola, Fernando
    This article is a commentary of the matters discussed at the Prague Seminar on the evolution of the construction industry, of which the detailed headings are «Evolution of the relationship of the various people who take part in the construction industry» and «The continuity of demand and the technical continuity of production». The papers discussed were submitted by the delegates of Danemark, Poland, Holland and Ucrania. The study and discussion of the main themes was greatly aided by a number of auxiliary documents, submitted and discussed by the delegates of other countries. The analysis of production line and flow line...

  12. La taxe Tobin : une synthèse des travaux basés sur la théorie des jeux et l’économétrie.

    Francis Bismans; Olivier Damette
    Alors que l’utilité de l’instauration d’une taxe Tobin fait l’objet de débats intenses, les travaux scientifiques qui y sont consacrés sont globalement méconnus. Le présent article en rend compte en se focalisant sur ceux d’entre eux qui font usage de la théorie des jeux er de l’économétrie.

  13. Fatti stilizzati e metodi econometrici "Moderni": una rivalutazione della Curva di Phillips per l'Italia (1951-1996)

    Golinelli, Roberto
    A quarant’anni dalla sua introduzione, la curva di Phillips riveste ancora un ruolo importante negli studi applicati, nonostante le critiche cui è stata sottoposta dalla successiva letteratura. In questo lavoro, utilizzando tecniche di modellazione econometrica di serie storiche non stazionarie per l’Italia dal dopoguerra ad oggi, si evidenzia la stabilità di una relazione di lungo periodo fra il tasso di variazione del salario reale e il tasso di disoccupazione; questo risultato è robusto all’uso di stimatori alternativi. Nel breve periodo si propone un modello interpretativo caratterizzato da un meccanismo non lineare di correzione dell’errore.

  14. Testing for Structural Change in Cointegrated Relationships. Analysis of price-wages models for Poland and Hungary

    Golinelli, Roberto; Orsi, Renzo
    In previous studies concerning short and long run relationships for price-wage models, the cointegration analysis has been developed assuming the existence of a unique cointegration parametrisation. These empirical results reveal the presence of significant relationships, both in the short and in the long run, among prices, wages, labour productivity and exchange rate. In this paper we intend to develop the possibility of a more general type of cointegration, allowing for a change at an unknown time period in the sample. At this end we will consider mainly the long run relationship among these variables using the testing procedure suggested by...

  15. Joint Decisions on Household Membership and Human Capital Accumulation of Youths: The role of expected carnings and labour market rationing.

    Monfardini, Chiara; Giannelli, Gianna Claudia
    This paper focuses on the youth’s decisions on household formation and human capital investment - in further education or work experience - and the factors influencing these choices. While previous studies limited their analyses to decisions concerning the living arrangements and the labour market, the choice set is extended here to take into account other alternatives. The decisions of either remaining in the parental household or going to live with a partner are modelled jointly with those of either entering the labour market (i.e. investing in work experience) or investing in higher (university) education. Using the Bank of Italy 1995...

  16. Assimetrias nos ciclos económicos : modelação não linear do PIB de alguns países

    Zsurkis, Gabriel Florin
    Mestrado em Econometria Aplicada e Previsão

  17. Modellazione Econometrica per la previsione congiunturale: un esercizio su produzione, prezzi e moneta

    Golinelli, Roberto
    Coloro che devono prendere decisioni di natura economica spesso si trovano di fronte il problema di quantificare il futuro. Scopo del presente lavoro è quello di indicare una possibile via da seguire per rispondere alle necessità di previsioni di breve periodo per produzione,prezzi e moneta. La modellazione economica delle variabili di interesse è ispirata dal filone di studi sul price gap. Le analisi grafica e univariata evidenziano che le caretteristiche principali delle serie storiche studiate sono la stagionalità e la non stazionarietà. Un opportuno trattamento della stagionalità ci ha spinto a sviluppare due modellazioni alternative: la prima basata sui dati...

  18. Unit root inference for non-stationary linear processes driven by infinite variance innovations

    Cavaliere, Giuseppe; Georgiev, Iliyan; Taylor, Robert
    The contribution of this paper is two-fold. First, we derive the asymptotic null distribution of the familiar augmented Dickey-Fuller [ADF] statistics in the case where the shocks follow a linear process driven by in…nite variance innovations. We show that these distributions are free of serial correlation nuisance parameters but depend on the tail index of the in…nite variance process. These distributions are shown to coincide with the corresponding results for the case where the shocks follow a …nite autoregression, provided the lag length in the ADF regression satis…es the same o(T1=3) rate condition as is required in the …nite variance...

  19. Sieve-based inference for infinite-variance linear processes

    Cavaliere, Giuseppe; Georgiev, Iliyan; Taylor, Robert
    We extend the available asymptotic theory for autoregressive sieve estimators to cover the case of stationary and invertible linear processes driven by independent identically distributed (i.i.d.) infinite variance (IV) innovations. We show that the ordinary least squares sieve estimates, together with estimates of the impulse responses derived from these, obtained from an autoregression whose order is an increasing function of the sample size, are consistent and exhibit asymptotic properties analogous to those which obtain for a finite-order autoregressive process driven by i.i.d. IV errors. As these limit distributions cannot be directly employed for inference because they either may not exist...

  20. Misspecification and Expectations Correction in New Keynesian DSGE Models

    Angelini, Giovanni; Fanelli, Luca
    Abstract: This paper focuses on the dynamic misspecification that characterizes the class of small-scale New-Keynesian models and provides a `natural' remedy for the typical difficulties these models have in accounting for the rich contemporaneous and dynamic correlation structure of the data, generally faced with ad hoc shock specifications. We suggest using the `best fitting' statistical model for the data as a device through which it is possible to adapt the econometric specification of the New-Keynesian model. The statistical model may feature an autocorrelation structure that is more involved than the autocorrelation structure implied by the structural model's reduced form solution under rational expectations, and it is treated...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.