Journal ArticleDOI
Optimization of energy required and greenhouse gas emissions analysis for orange producers using data envelopment analysis approach
TLDR
In this paper, the authors used data envelopment analysis for measuring the efficiency of orchardists, discriminate efficient and inefficient produce from inefficient ones and identify wasteful uses of energy using data envelope analysis for orange production in Guilan province of Iran.About:
This article is published in Journal of Cleaner Production.The article was published on 2014-02-15. It has received 153 citations till now. The article focuses on the topics: Data envelopment analysis.read more
Citations
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Comparative field performances between conventional combine and mid-size combine in wetland rice cultivation.
TL;DR: The results revealed that the mid-size combine is more suitable in conducting the harvest operation in rice field in Malaysia than the conventional combine.
Journal ArticleDOI
Energy, CO2, AQI and economic performance in 31 cities in China: a slacks-based dynamic data envelopment analysis
TL;DR: In this paper, the rapid increase in urbanization and environmental damage have been caused by the increased need for fossil fuel resources, and the need for energy is vital to economic progress.
Journal ArticleDOI
Evaluation of energy balance and greenhouse gas emissions in rice cultivation in Guilan province, northern Iran
TL;DR: In this article, the effect of paddy farm level of mechanization on the energy balance and greenhouse gas emissions as well as their effect on rice cultivation in Guilan province, Iran was investigated.
Journal Article
An investigation of relation between CO2 emissions and yield of tea production in Guilan province of Iran
TL;DR: In this article, the authors examined the CO2 emissions patterns and the relationship between CO2 input and yield for tea production in Lahijan city of Guilan province, China.
Journal ArticleDOI
Impact of energy flow optimization on the mitigation of environmental consequences and costs in greenhouse cucumber production
TL;DR: Environmental analysis of optimized greenhouses showed that efficient use of inputs can reduce all environmental impacts between 7 and 80%, which highlights the importance of efficient resource management in this study.
References
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Journal ArticleDOI
Coefficient alpha and the internal structure of tests.
TL;DR: In this paper, a general formula (α) of which a special case is the Kuder-Richardson coefficient of equivalence is shown to be the mean of all split-half coefficients resulting from different splittings of a test, therefore an estimate of the correlation between two random samples of items from a universe of items like those in the test.
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Measuring the efficiency of decision making units
TL;DR: A nonlinear (nonconvex) programming model provides a new definition of efficiency for use in evaluating activities of not-for-profit entities participating in public programs and methods for objectively determining weights by reference to the observational data for the multiple outputs and multiple inputs that characterize such programs.
Journal ArticleDOI
Some Models for Estimating Technical and Scale Inefficiencies in Data Envelopment Analysis
TL;DR: The CCR ratio form introduced by Charnes, Cooper and Rhodes, as part of their Data Envelopment Analysis approach, comprehends both technical and scale inefficiencies via the optimal value of the ratio form, as obtained directly from the data without requiring a priori specification of weights and/or explicit delineation of assumed functional forms of relations between inputs and outputs as mentioned in this paper.
Book
Data Envelopment Analysis: A Comprehensive Text with Models, Applications, References and DEA-Solver Software
TL;DR: In this article, the basic CCR model and DEA models with restricted multipliers are discussed. But they do not consider the effect of non-discretionary and categorical variables.
Journal ArticleDOI
Carbon emission from farm operations
TL;DR: The available information on energy use in farm operations, and its conversion into carbon equivalent (CE) is a synthesis of the available information and shows that an output/input ratio, expressed either as gross or net output of C, must be >1 and has an increasing trend over time.