{"title":"用基期法对韩国水稻产业的成本和技术效率进行跨期比较","authors":"Jeongseung Kim, Chanjin Chung","doi":"10.1002/jaa2.117","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n <p>Objectives of our study are to develop a procedure for intertemporal comparison of both technical and cost efficiency and estimate farm efficiency for the Korean rice industry from 2003 to 2017. The newly developed base-year procedure excludes frontier shift and price effects from the standard procedure for intertemporal comparison. An adjusted central limit theorem for sample T-tests is applied to avoid potential bias from efficiency scores by the Data Envelope Analysis. Our empirical results show that the two procedures yield different scores and trends. The standard approach indicates declining efficiency, while the base-year method shows overall improvement in farm efficiency.</p>\n </section>\n </div>","PeriodicalId":93789,"journal":{"name":"Journal of the Agricultural and Applied Economics Association","volume":"3 2","pages":"358-375"},"PeriodicalIF":0.0000,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jaa2.117","citationCount":"0","resultStr":"{\"title\":\"Intertemporal comparison of cost and technical efficiencies using a base period approach for the Korean rice industry\",\"authors\":\"Jeongseung Kim, Chanjin Chung\",\"doi\":\"10.1002/jaa2.117\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n <p>Objectives of our study are to develop a procedure for intertemporal comparison of both technical and cost efficiency and estimate farm efficiency for the Korean rice industry from 2003 to 2017. The newly developed base-year procedure excludes frontier shift and price effects from the standard procedure for intertemporal comparison. An adjusted central limit theorem for sample T-tests is applied to avoid potential bias from efficiency scores by the Data Envelope Analysis. Our empirical results show that the two procedures yield different scores and trends. The standard approach indicates declining efficiency, while the base-year method shows overall improvement in farm efficiency.</p>\\n </section>\\n </div>\",\"PeriodicalId\":93789,\"journal\":{\"name\":\"Journal of the Agricultural and Applied Economics Association\",\"volume\":\"3 2\",\"pages\":\"358-375\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-03-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jaa2.117\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Agricultural and Applied Economics Association\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jaa2.117\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Agricultural and Applied Economics Association","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jaa2.117","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
我们的研究目标是开发一种技术效率和成本效率的跨期比较程序，并估算 2003 年至 2017 年韩国水稻产业的农业效率。新开发的基年程序排除了跨时比较标准程序中的前沿转移和价格效应。为了避免数据包络分析法对效率评分可能产生的偏差，我们采用了调整后的样本 T 检验中心极限定理。我们的实证结果表明，两种程序得出了不同的得分和趋势。标准方法显示效率下降，而基年方法则显示农场效率整体提高。
Intertemporal comparison of cost and technical efficiencies using a base period approach for the Korean rice industry
Objectives of our study are to develop a procedure for intertemporal comparison of both technical and cost efficiency and estimate farm efficiency for the Korean rice industry from 2003 to 2017. The newly developed base-year procedure excludes frontier shift and price effects from the standard procedure for intertemporal comparison. An adjusted central limit theorem for sample T-tests is applied to avoid potential bias from efficiency scores by the Data Envelope Analysis. Our empirical results show that the two procedures yield different scores and trends. The standard approach indicates declining efficiency, while the base-year method shows overall improvement in farm efficiency.
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