Search Results - subject:"diffuse"

Likelihood functions for state space models with diffuse initial conditions

Francke, Marc K.; Koopman, Siem Jan; Vos, Aart F. de - 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/10011374403

Establishing new empirical models for predicting monthly mean horizontal diffuse solar radiation in city of Isfahan, Iran

Sabzpooshani, Majid; Mohammadi, Kasra - In: Energy 69 (2014) C, pp. 571-577

Diffuse solar radiation data are very required for many solar energy applications. The main objective of the present … study is to establish new empirical models for predicting the monthly mean diffuse solar radiation on a horizontal surface … nominated and categorized as: (1) diffuse fraction is function of relative sunshine duration; (2) diffuse fraction is function …

Persistent link: https://www.econbiz.de/10010809056

The loss of trust in the European Union during the great recession since 2007: The role of heuristics from the national political system

Armingeon, Klaus; Ceka, Besir - In: European Union Politics 15 (2014) 1, pp. 82-107

in national governments. Based on cue theory and using concepts of diffuse and specific support, we find that support for …

Persistent link: https://www.econbiz.de/10010772720

Nitrogen and phosphorus leaching losses from intensively managed paddy fields with straw retention

Wang, Jun; Wang, Dejian; Zhang, Gang; Wang, Yuan; Wang, Can - In: Agricultural Water Management 141 (2014) C, pp. 66-73

A field experiment was carried out for three years to examine the concentrations of NH4+-N, NO3−-N and dissolved total phosphorus (TP) in leachates and cumulative leaching losses in rice fields with straw retention under different rates of fertilizer N application. With straw retention, the...

Persistent link: https://www.econbiz.de/10011047755

Estimation of direct normal irradiance from measured global and corrected diffuse horizontal irradiance

Kotti, M.C.; Argiriou, A.A.; Kazantzidis, A. - In: Energy 70 (2014) C, pp. 382-392

DNI (direct normal irradiance) can be calculated from global and diffuse horizontal irradiance measurements. However …, the diffuse irradiance values need to be corrected because the pyranometer's shadowband does not obstruct only the solar … disk but also a larger part of the sky vault. In this study, we use four diffuse correction models (Drummond [1], LeBaron …

Persistent link: https://www.econbiz.de/10011056096

Modeling the hourly solar diffuse fraction in Taiwan

Kuo, Chia-Wei; Chang, Wen-Chey; Chang, Keh-Chin - In: Renewable Energy 66 (2014) C, pp. 56-61

Using the data for global and diffuse radiation in Tainan, Taiwan, for the years of 2011 and 2012, respectively, four … index and a measure of persistence of global radiation level, are constructed to relate the hourly diffuse fraction on a … perform well in predicting the diffuse fraction, while the performances of the proposed logistic models are more case …

Persistent link: https://www.econbiz.de/10011043995

ARIMA and regression models for prediction of daily and monthly clearness index

Hassan, Jamal - In: Renewable Energy 68 (2014) C, pp. 421-427

Hourly and daily measurements of total and diffuse solar radiation and sunshine duration are analyzed. Three … diffuse solar radiation are analyzed. The results show that the annual mean of the daily total and diffuse solar radiation is …. Several empirical equations for estimating monthly mean daily global and diffuse solar radiation have been developed and …

Persistent link: https://www.econbiz.de/10011044354

Spatial Optimization of Best Management Practices to Attain Water Quality Targets

Gaddis, Erica; Voinov, Alexey; Seppelt, Ralf; Rizzo, Donna - In: Water Resources Management 28 (2014) 6, pp. 1485-1499

Diffuse nutrient loads are a common problem in developed and agricultural watersheds. While there has been substantial … investment in best management practices (BMPs) to reduce diffuse pollution, there remains a need to better prioritize controls at …. We implemented spatial optimization techniques among four diffuse source pathways in a mixed-use watershed in Northern …

Persistent link: https://www.econbiz.de/10010997519

Classifying logistics-relevant disasters: conceptual model and empirical illustration

L’Hermitte, Cécile; Tatham, Peter; Bowles, Marcus - In: Journal of Humanitarian Logistics and Supply Chain … 4 (2014) 2, pp. 155-178

Purpose – The purpose of this paper is to use a theory-based approach to develop a new classification model for disasters that reflects their logistics implications, and to contextualise the findings by applying the model to a particular disaster situation. Design/methodology/approach – A...

Persistent link: https://www.econbiz.de/10014871795

From Formal Subsumption to General Intellect: Elements for a Marxist Reading of the Thesis of Cognitive Capitalism, in Historical Materialism

Vercellone, Carlo - HAL - 2007

Since the crisis of Fordism, capitalism has been characterised by the ever more central role ofknowledge and the rise of the cognitive dimensions of labour. This is not to say that the centralityof knowledge to capitalism is new per se. Rather, the question we must ask is to what extent we...

Persistent link: https://www.econbiz.de/10010750713