Production Campaign Planning Under Learning and Decay

2020 ◽  
Vol 22 (3) ◽  
pp. 615-632
Author(s):  
Hossein Jahandideh ◽  
Kumar Rajaram ◽  
Kevin McCardle
Keyword(s):  
Production Campaign

scholarly journals Mass Production Test of Solar Cells and Modules Made of 100% UMG Silicon. 20.76% Record Efficiency

Energies ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1495 ◽  
Author(s):  
Forniés ◽  
Ceccaroli ◽  
Méndez ◽  
Souto ◽  
Pérez Vázquez ◽  
...  
Keyword(s):  
Solar Cells ◽  
Value Chain ◽  
Mass Production ◽  
Industrial Test ◽  
Black Silicon ◽  
Production Test ◽  
Average Efficiency ◽  
Silicon Purification ◽  
Production Campaign ◽  
Upgraded Metallurgical Grade Silicon

For more than 15 years FerroAtlantica (now Ferroglobe) has been developing a method of silicon purification to obtain Upgraded Metallurgical Grade Silicon (UMG-Si) for PV solar application without blending. After many improvements and optimizations, the final process has clearly demonstrated its validity in terms of quality and costs. In this paper the authors present new results stemming from a first mass-production campaign and a detailed description of the purification process that results in the tested UMG-Si. The subsequent steps in the value chain for the wafer, cell and module manufacturing are also described. Two independent companies, among the Tier-1 solar cells producers, were selected for the industrial test, each using a different solar cell technology: Al-BSF and black silicon + PERC. Cells and modules were manufactured in conventional production lines and their performances compared to those obtained with standard polysilicon wafers produced in the same lines and periods. Thus, for Al-BSF technology, the average efficiency of solar cells obtained with UMG-Si was (18.4 ± 0.4)% compared to 18.49% obtained with polysilicon-made wafers. In the case of black silicon + PERC, the average efficiency obtained with UMG-Si was (20.1 ± 0.6)%, compared to 20.41% for polysilicon multicrystalline wafers.

The 2020 campaign in Europe

2021 ◽  
pp. 264-270
Keyword(s):  
The Netherlands ◽  
European Countries ◽  
Sugar Production ◽  
Production Campaign

In 2020, the beet campaign in many European countries began later and was shorter than usual. Sugar production was of 14.50 mn t in 2020/21 was 1.76 mn t or 10.9% lower than last year. The paper describes the passing of the campaign in Germany, Denmark, Sweden, Finland, France, the Netherlands, Austria and Poland in respect to climate, beet area, yields, production, campaign length and investments.

Digital Image Analysis of the Rolls During Production of Aluminum Foils

2001 ◽  
Author(s):  
E. Marchetti ◽  
F. Venlali
Keyword(s):  
Image Processing ◽  
Image Analysis ◽  
Statistical Analysis ◽  
Digital Image Processing ◽  
Digital Image ◽  
Digital Image Analysis ◽  
Longitudinal Direction ◽  
Axial Direction ◽  
Production Campaign ◽  
Roughness Measurements

Abstract The morphological appearance of the cylinders and of the laminates have been assessed by digital image processing performed during a number of production campaign of aluminum foils. The statistical analysis performed on the cylinders have shown that it is possible to evidence the modifications induced by the rolling operation. Such modifications have been found both in axial direction of the cylinders and in the longitudinal direction of the laminates. Yet, roughness measurements performed on the cylinders did not show any variation along the axial direction.

scholarly journals PRODUÇÃO LEGISLATIVA, GASTOS DE CAMPANHA E DESEMPENHO ELEITORAL: EVIDÊNCIAS A PARTIR DE UM ESTUDO DE CASO / LEGISLATIVE PRODUCTION, CAMPAIGN EXPENDITURE AND ELECTORAL PERFORMANCE: EVIDENCE FROM A CASE STUDY

2017 ◽  
Vol 10 (24) ◽  
pp. 142-155
Author(s):  
Renato Hayashi
Keyword(s):  
Campaign Expenditure ◽  
Production Campaign ◽  
Legislative Production ◽  
Electoral Performance ◽  
A Performance

Quais fatores explicam o desempenho eleitoral? Este artigo analisa o impacto da produção legislativa e dos gastos de campanha sobre a quantidade de votos recebido pelos vereadores do Recife nas eleições municipais de 2016. Testa-se duas hipóteses: 1) quanto maior a produção legislativa maior o número de votos e 2) quanto maior o gasto de campanha, maior a quantidade de votos.  O desenho de pesquisa examina um banco de dados original elaborado a partir de informações secundárias coletadas nos sites da Câmara do Recife e do Tribunal Regional Eleitoral de Pernambuco. Os resultados indicam que, ao se considerar todos os casos (n=37), o modelo de regressão apresenta um ajuste de 0,456. No entanto, após a exclusão de um outlier, temos um r²=0,081, o que significa que as variáveis não explicam satisfatoriamente o desempenho eleitoral. Em termos substantivos, os resultados indicam que a performance eleitoral dos vereadores não é afetada pela produção legislativa formal nem pelo gasto de campanha. 

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