Search Results - subject:"diffuse"

Comparative study of various models in estimating hourly diffuse solar irradiance

Torres, J.L.; De Blas, M.; García, A.; de Francisco, A. - In: Renewable Energy 35 (2010) 6, pp. 1325-1332

This work presents a comparison among seventeen different proposals for estimating the hourly diffuse fraction of … last ones consider the diffuse irradiance values in the previous and posterior hour to that of the calculation. In general …

Persistent link: https://www.econbiz.de/10011046319

Robust interpolation of agricultural census data to hydrological units and implications for diffuse pollution modelling

Posen, Paulette E.; Hutchins, Michael G.; Lovett, Andrew A. - 2009

Diffuse pollution from agriculture is often responsible for observed concentrations of agricultural compounds being in … diffuse pollution model to reflect present-day land use profiles. Combining agricultural land use data with hydrological … which robust estimations of agricultural land use can be made and examines the implications for diffuse pollution modelling. …

Persistent link: https://www.econbiz.de/10010276515

Modelling the mitigation mix: faecal microbes, economic constraints and sustainable land management

Butler, Allan J.; Oliver, David; Chadwick, Dave; Fish, Rob - Agricultural Economics Society - AES - 2009

Conventional livestock farming provides consumers with cheap and reliable sources of milk and meat. Yet the inevitable by-product, i.e. livestock faecal matter, represents a potential source of pathogenic microorganisms. This paper applies the Faecal Indicator Organisms Costing Assessment Tool...

Persistent link: https://www.econbiz.de/10004964502

Integrated Regulation of Nonpoint Pollution: Combining Managerial Controls and Economic Instruments under Multiple Environmental Targets

Aftab, Ashar; Baiocchi, Giovanni; Hanley, Nick - Department of Economics and Finance, Business School - 2009

Regulators are often reluctant to rely solely on economic incentives to achieve environmental standards. We evaluate a "mixed approach" of economic instruments and management standards when two environmental objectives need to be met simultaneously: minimum river flow rates and reductions in...

Persistent link: https://www.econbiz.de/10009293604

An efficient numerical method for simulating multiphase flows using a diffuse interface model

Lee, Hyun Geun; Kim, Junseok - In: Physica A: Statistical Mechanics and its Applications 423 (2015) C, pp. 33-50

This paper presents a new diffuse interface model for multiphase incompressible immiscible fluid flows with surface … developed scheme for the multiphase-field equation. To illustrate the robustness and accuracy of the diffuse interface model for …

Persistent link: https://www.econbiz.de/10011193990

Evaluation of decomposition models of various complexity to estimate the direct solar irradiance over Belgium

Bertrand, Cédric; Vanderveken, Gilles; Journée, Michel - In: Renewable Energy 74 (2015) C, pp. 618-626

by satellite-based diffuse fraction models and evaluated against direct solar radiation data measured at Uccle. Our …

Persistent link: https://www.econbiz.de/10011076897

Likelihood Functions for State Space Models with Diffuse Initial Conditions

Francke, Marc K.; Koopman, Siem Jan; de Vos, Aart - 2008

State space models with nonstationary processes and fixed regression effects require a state vector with diffuse … diffuse initial conditions. In this paper we consider profile, diffuse and marginal likelihood functions. The marginal … diffuse likelihood is a marginal likelihood for a specific data transformation that may depend on parameters. Therefore, the …

Persistent link: https://www.econbiz.de/10010325962

A hybrid methodology for the Cox proportional hazard model

Briceño, Marianela Luzardo - In: Economía 33 (2008) 26, pp. 179-188

estimations of the parameters of the proportional hazard Cox’s Model using the neo diffuse neuron structure proposed by Yamakawa …

Persistent link: https://www.econbiz.de/10004966340

Likelihood Functions for State Space Models with Diffuse Initial Conditions

Francke, Marc K.; Koopman, Siem Jan; Vos, Aart de - Tinbergen Institute - 2008

Persistent link: https://www.econbiz.de/10005137120

Likelihood Functions for State Space Models with Diffuse Initial Conditions

Francke, Marc K.; Koopman, Siem Jan; Vos, Aart de - Tinbergen Instituut - 2008

> State space models with nonstationary processes and fixed regression effects require a state vector with diffuse initial … conditions. Different likelihood functions can be adopted for the estimation of parameters in time series models with diffuse … initial conditions. In this paper we consider profile, diffuse and marginal likelihood functions. The marginal likelihood is …

Persistent link: https://www.econbiz.de/10011256097