نتایج جستجو برای: c41

تعداد نتایج: 193  

2000
Tao Zhang

We investigate how unemployment exit probabilities are affected by economic incentives, spell duration and macroeconomic conditions. Building on a database containing all registered unemployment spells in Norway in 1989-1998, we apply an econometric model in which exit probabilities vary freely over spell durations as well as calendar time. We find that i) the replacement ratio affects the exit...

2006
Tibor Besedes Tibor Besedeš

More than half of all US import relationships begin with less than $10,000 annually. The median relationship is observed to last just one year. The incidence and duration of these relationships are consistent with a matching model of international trade. The preponderance of small starting relationships reveals uncertainty present in formation of trade relationships. Initial size, reliability, ...

2009
Takayasu Matsuoka

This paper investigates price rigidity arise out of the speci c market structures, such as degree of market concentration and pricing decisions of retailers and manufacturers. Using Japanese scanner data that contains transaction prices and sales for more than 1,600 commodity groups from 1988 to 2008, we nd statistically signi cant negative correlation between the degree of market concentration...

2005
Yingyao Hu Geert Ridder

We consider the estimation of nonlinear models with mismeasured explanatory variables, when information on the marginal distribution of the true values of these variables is available. We derive a semi-parametric MLE that is is shown to be √ n consistent and asymptotically normally distributed. In a simulation experiment we find that the finite sample distribution of the estimator is close to t...

Journal: :Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria 2015
Rômulo Silva de Oliveira Rodrigo Casquero Cunha Jonas Moraes-Filho Relber Aguiar Gonçales Ana Paula de Souza Stori de Lara Luciana Farias da Costa de Avila Marcelo Bahia Labruna Fábio Pereira Leivas Leite

The canine monocytic ehrlichiosis, caused by Ehrlichia canis, is endemic in several regions of Brazil. Some serological diagnostic techniques using immunodominant proteins of E. canis as antigens are available, but their specificities and sensitivities are questionable. Based on this, the objective of this study was to test the antigenic potential of the recombinant gp19 protein (rGP19) for sub...

2004
Joachim Wolff

This paper studies the duration of new job matches in east and west Germany using data from the German Socio-economic Panel. Non-parametric estimates of the survival probability show that, except for the first years of the east German transition process, job matches are less stable in east Germany. Results from a proportional hazards model that controls for important covariates imply that the t...

Journal: :International Journal of Interactive Multimedia and Artificial Intelligence 2021

This work has been partly supported by the Spanish Thematic Network “Learning Machines for Singular Problems and Applications (MAPAS)” (TIN2017-90567-REDT, MINECO/FEDER EU), IDEAI-UPC Consolidated Research Group Grant from Catalan Agency of University Grants (AGAUR, Generalitat de Catalunya) (2017 SGR 574), Science Innovation Ministry Klinilycs (TEC2016-75361-R), AAVis-BMR (PID2019-107768RA-I00...

2005
Darrell Duffie

This article combines an orientation to credit risk modeling with an introduction to affine Markov processes, which are particularly useful for financial modeling. We emphasize corporate credit risk and the pricing of credit derivatives. Applications of affine processes that are mentioned include survival analysis, dynamic term-structure models, and option pricing with stochastic volatility and...

2012
Wolfgang Karl Härdle Nikolaus Hautsch Andrija Mihoci Wolfgang K. Härdle

We propose a local adaptive multiplicative error model (MEM) accommodating timevarying parameters. MEM parameters are adaptively estimated based on a sequential testing procedure. A data-driven optimal length of local windows is selected, yielding adaptive forecasts at each point in time. Analyzing one-minute cumulative trading volumes of five large NASDAQ stocks in 2008, we show that local win...

1999
Stephen P. Jenkins

This paper is about income and poverty dynamics and their socioeconomic correlates. The first half of the paper aims to establish some of the salient facts for Britain, applying the pioneering methods of Bane and Ellwood (1986). Important for poverty dynamics are changes in labour earnings from persons other than the household head, changes in non-labour income (including benefits), and changes...

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