The Poisson-Lomax Distribution

In this paper we propose a new three-parameter lifetime distribution with upside-down bathtub shaped failure rate. The distribution is a compound distribution of the zero-truncated Poisson and the Lomax distributions (PLD). The density function, shape of the hazard rate function, a general expansion for moments, the density of the rth order statistic, and the mean and median deviations of the PLD are derived and studied in detail. The maximum likelihood estimators of the unknown parameters are obtained. The asymptotic confidence intervals for the parameters are also obtained based on asymptotic variance-covariance matrix. Finally, a real data set is analyzed to show the potential of the new proposed distribution

The Beta-Gompertz Distribution

Abstract In this paper, we introduce a new four-parameter generalized version of the Gompertz model which is called Beta-Gompertz (BG) distribution. It includes some well-known lifetime distributions such as Beta-exponential and generalized Gompertz distributions as special sub-models. This new distribution is quite flexible and can be used effectively in modeling survival data and reliability problems. It can have a decreasing, increasing, and bathtub-shaped failure rate function depending on its parameters. Some mathematical properties of the new distribution, such as closed-form expressions for the density, cumulative distribution, hazard rate function, the kth order moment, moment generating function, Shannon entropy, and the quantile measure are provided. We discuss maximum likelihood estimation of the BG parameters from one observed sample and derive the observed Fisher's information matrix. A simulation study is performed in order to investigate the properties of the proposed estimator. At the end, in order to show the BG distribution flexibility, an application using a real data set is presented

Informe del Proyecto "Proyecto piloto de desarrollo de canales cortos de distribución y comercio B2C digital en alimentación y bebidas" (GCP-2018-0006-00)

Miembros beneficiarios: Asociación Aragón INNOVALIMEN ; Asociación de Industrias de Alimentación de Aragón – AIAA ; Federación Aragonesa de Cooperativas Agrarias – FACAMiembros no beneficiarios: Asociación para el Desarrollo y Fomento de Productos de Calidad Agroalimentaria – ADEPACA ; Centro de Investigación y Tecnología Agroalimentaria de Aragón - CITAInnovación para la digitalización comercial de las empresas agroalimentarias en entorno B2CUnión Europea – Fondo Europeo Agrícola de Desarrollo Rural ; Gobierno de Aragón ; Programa de Desarrollo Rural para Aragón 2014-202

A Repositioning Strategy for Olive Oil in the UK Market

This paper shows the full implementation of a marketing research exercise on the UK olive oil market. The paper is frequently cited in related consumer behaviour studies due to its methodological approach which combines both qualitative and quantitative analysis. Outcomes of the paper were discussed with the Spanish Olive Oil Producers Association and the Spanish Trade Representative in the UK