The effect of restructuring on US coal mining labor productivity, 1980–1995

Kuby, Michael; Xie, Zhimin

doi:10.1016/s0360-5442(01)00051-2

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…Résultat : la productivité des mines triple aux États-Unis entre 1980 et 1995. L'ouvrier des mines à ciel ouvert du Wyoming extrait 20 tonnes de charbon par jour contre 1,5 tonnes pour les charbonnages de France dans les années 1950 (49) . De même, en Allemagne, ce n'est pas le pétrole qui remplace le charbon, mais la lignite exploitée à ciel ouvert.…”

Section: Carbon Fallacyunclassified

Pour une histoire des symbioses énergétiques et matérielles

Fressoz¹

2020

Annales Des Mines - Responsabilité Et Environnement

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Avec l’urgence climatique, l’expression « transition énergétique » a acquis un tel prestige que les historiens en sont venus à l’employer pour décrire toutes sortes de processus, y compris ceux qui furent, à rigoureusement parler, des additions énergétiques. Le problème de la « transition énergétique » est qu’elle projette un passé qui n’existe pas sur un futur pour le moins fantomatique. Cet article propose une nouvelle façon d’aborder l’histoire de l’énergie en tant que dynamique d’accumulation symbiotique.

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Section: Carbon Fallacyunclassified

Pour une histoire des symbioses énergétiques et matérielles

Fressoz¹

2020

Annales Des Mines - Responsabilité Et Environnement

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“…Nevertheless, reducing mining operations has had undesirable economic repercussions (Kuby and Xie, 2001) for productionrelated factors such as work and profits. Attempts to develop effective, publicly funded formulas (Steenblik and Wigley, 1990) that guarantee continued activity based on internationally competitive prices and the search for viable alternatives have spurred production adaptations in the energy sector.…”

Section: Introductionmentioning

confidence: 99%

Coal restructuring in Spain: Continuity and uncertainty?

Rabanal

2009

Energy Policy

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“…In the empirical literature on HTM productivity determinants, an alternative approach to physical output is to use value-added [1], [2]. Openness to trade, human capital and technology innovation activity are found to have very strong and robust impacts on HTM labor productivity, along with other factors such as financial development, infrastructure development and quality [3].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Forecasting of High-Technology Manufacturing Labor Productivity Based on Grey Support Vector Machines with Genetic Algorithms

Zhao

Liu

et al. 2006

2006 International Conference on Machine Learning and Cybernetics

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In recent years, computing high-technology manufacturing (HTM) labor productivity (LP) level and growth rate has gained a renewed interest in both growth economists and trade economists. Measuring LP performance has become an area of concern for companies and policy makers. HTM LP is complex to conduct due to its nonlinearity of influenced factors. Support vector machines (SVM) have been successfully employed to solve nonlinear regression and time series problems. Grey system theory successfully utilizes accumulated generating data instead of original data to build forecasting model, which makes raw data stochastic weak, or reduces noise influence in a certain extent. However, the application combining grey system theory and SVM for LP forecasting is rare. In this study, a grey support vector machines with genetic algorithms (GSVMG) is proposed to forecast HTM LP. In addition, GM (1, N) model of grey system is used to add a grey layer before neural input layer and white layer after SVM layer. Genetic algorithms (GAs) are used to determine free parameters of support vector machines. Evaluation method has been used for comparing the performance of forecasting techniques. The experiments show that the GSVMG model is outperformed GM (1, N) model and SVM with genetic algorithms (SVMG) model, and HTM LP forecasting based on GSVMG is of validity and feasibility.

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The effect of restructuring on US coal mining labor productivity, 1980–1995

Cited by 9 publications

References 9 publications

Pour une histoire des symbioses énergétiques et matérielles

Pour une histoire des symbioses énergétiques et matérielles

Coal restructuring in Spain: Continuity and uncertainty?

Modeling and Forecasting of High-Technology Manufacturing Labor Productivity Based on Grey Support Vector Machines with Genetic Algorithms

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