Search Results - "Sánchez Gutiérrez, R"

Multivariate stochastic Vasicek diffusion process: computational estimation and application to the analysis of CO2 and N2O concentrations by Nafidi, A., Makroz, I., Gutiérrez Sánchez, R., Ramos-Ábalos, E.

“…In this paper, we propose a new extension of the Vasicek model to the multivariate case and analyze its characteristics, including its probability density…”
Get full text

Bacteria associated with apical periodontitis promotes in vitro the differentiation of macrophages to osteoclasts by Torres-Monjarás, A. P., Sánchez-Gutiérrez, R., Hernández-Castro, B., González-Baranda, L., Alvarado-Hernández, D. L., Pozos-Guillén, A., Muñoz-Ruiz, A., Méndez-González, V., González-Amaro, R., Vitales-Noyola, M.

“…Objective To analyze the possible in vitro effect of the cytokine RANKL and bacteria involved in apical periodontitis on the differentiation of macrophages…”
Get full text

Forecasting total natural-gas consumption in Spain by using the stochastic Gompertz innovation diffusion model by Gutiérrez, R., Nafidi, A., Gutiérrez Sánchez, R.

“…The principal objective of the present study is to examine the possibilities of using a Gompertz-type innovation diffusion process as a stochastic growth model…”
Get full text

Hydrogeochemical baseline in a human-altered landscape of the central Pacific coast of Costa Rica by Sánchez-Gutiérrez, R., Mena-Rivera, L., Sánchez-Murillo, R., Fonseca-Sánchez, A., Madrigal-Solís, H.

“…Groundwater pollution in tropical and human-altered coastal landscapes is receiving novel attention due to decreasing in annual recharge as a consequence of…”
Get full text

Tracing Water Sources and Fluxes in a Dynamic Tropical Environment: From Observations to Modeling by Sánchez-Murillo, R., Esquivel-Hernández, G., Birkel, C., Correa, A., Welsh, K., Durán-Quesada, A. M., Sánchez-Gutiérrez, R., Poca, M.

“…Tropical regions cover approximately 36% of the Earth’s landmass. These regions are home to 40% of the world’s population, which is projected to increase to…”
Get full text

Evaluating watershed health in Costa Rican national parks and protected areas by Jovanelly, T. J., Rodríguez-Montero, L., Sánchez-Gutiérrez, R., Mena-Rivera, L., Thomas, D.

“…Although the biodiversity of Costa Rican national parks, forests, and wetlands has been extensively surveyed, there has not been a watershed assessment that…”
Get full text

Electricity consumption in Morocco: Stochastic Gompertz diffusion analysis with exogenous factors by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A.

“…This paper proposes a means of using stochastic diffusion processes to model the total consumption of electrical power (including distribution and transport…”
Get full text

The trend of the total stock of the private car-petrol in Spain: Stochastic modelling using a new gamma diffusion process by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A.

“…The main aim of this study is to model the trend of the evolution of the total stock of private petrol-driven cars. In Spain, as in other EU countries, this…”
Get full text

Detection, modelling and estimation of non-linear trends by using a non-homogeneous Vasicek stochastic diffusion. Application to CO2 emissions in Morocco by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A., Pascual, A.

“…This paper proposes a new stochastic model, based on a Vasicek non-homogeneous diffusion process, in which the non-linear trend coefficient (drift) depends on…”
Get full text

The Stochastic Rayleigh diffusion model: Statistical inference and computational aspects. Applications to modelling of real cases by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A.

“…In this paper, we consider a Stochastic System modelling by the Stochastic Rayleigh Diffusion Process and we discuss theoretical aspects of the latter and…”
Get full text

Trend analysis using nonhomogeneous stochastic diffusion processes. Emission of CO2; Kyoto protocol in Spain by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A.

“…In this study, we propose a methodology to analyse the gradual secular trends present in the time evolution of certain endogenous variables, which are of…”
Get full text

Modelling and forecasting vehicle stocks using the trends of stochastic Gompertz diffusion models: The case of Spain by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A.

“…In the present study, we treat the stochastic homogeneous Gompertz diffusion process (SHGDP) by the approach of the Kolmogorov equation. Firstly, using a…”
Get full text

A new stochastic Gompertz diffusion process with threshold parameter: Computational aspects and applications by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A., Ramos, E.

“…In this paper we propose a new homogeneous stochastic Gompertz diffusion model with a threshold parameter. This can be considered an extension of the…”
Get full text

A bivariate stochastic Gompertz diffusion model: statistical aspects and application to the joint modeling of the Gross Domestic Product and CO2 emissions in Spain by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A.

“…In this paper we propose a bivariate stochastic Gompertz diffusion model as the solution for a system of two Itô stochastic differential equations (SDE) that…”
Get full text

The effect of nested grid sampling on the parameter estimation of a spatial Gompertz diffusion by Gutiérrez, R., Roldán, C., Gutiérrez-Sánchez, R., Angulo, J. M.

“…This paper evaluates the effects of using data observed on regular nested grids on the parameter estimates of a two-parameter Gompertz diffusion model. This…”
Get full text

A diffusion model with cubic drift: statistical and computational aspects and application to modelling of the global CO2 emission in Spain by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A., Ramos, E.

“…The aim of this work is the study of a new stochastic diffusion model with a cubic‐type drift coefficient. The model is considered as the solution of an Ito…”
Get full text

Emissions of greenhouse gases attributable to the activities of the land transport: modelling and analysis using I-CIR stochastic diffusion-the case of Spain by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A.

“…In this study, carried out on the basis of the conclusions and methodological recommendations of the Fourth Assessment Report (2007) of the International Panel…”
Get full text

Modelling and predicting electricity consumption in Spain using the stochastic Gamma diffusion process with exogenous factors by Nafidi, A., Gutiérrez, R., Gutiérrez-Sánchez, R., Ramos-Ábalos, E., El Hachimi, S.

“…The aim of this study is to model electric power consumption during a period of economic crisis, characterised by declining gross domestic product. A novel…”
Get full text

Three-parameter stochastic lognormal diffusion model: statistical computation and simulating annealing - application to real case by Gutiérrez, R., Gutiérrez-Sánchez, R., Nafidi, A., Ramos, E.

“…In this paper, we propose a new study of a stochastic lognormal diffusion process (SLDP), with three parameters, which can be considered as an extension of the…”
Get full text

Protective effect of fallopian tubal fluid against activated leucocyte-induced sperm DNA fragmentation: preliminary results by Navarrete Gómez, P., Espinoza Ruiz, J., Parodi Rivera, J., Alvarez, J. G., Sánchez Gutiérrez, R.

“…Summary The integrity of the paternal genome is of paramount importance in the initiation and maintenance of a viable pregnancy. Oxygen radicals (ROS) have…”
Get full text