杨国梁，博士，中国科学院科技战略咨询研究院研究员。长期从事科技规划与管理、智库理论与方法和决策理论与方法研究。承担多项中科院发展规划局委托的各类与科技规划、科技管理相关的应用研究任务，主持过30多项来自英国皇家工程院、国务院政策研究室、教育部、科技部、农业农村部、国家自然科学基金委、国家电网等机构的委托任务与竞争性项目课题。

本书为在国际核心期刊的已发表的经济类的英文论文集。本书中，研究了DEA框架中与经济学中的生产规模相关的三个重要概念：规模收益（RTS），拥挤和产能利用率（CU）。在本书中，将探讨这三个经济学概念中的若干理论方法问题以及相应的实践研究和思考。

CONTENTS
Chapter 1 Estimating Directional Returns to Scale in DEA
Chapter 2 Data Envelopment Analysis in the Absence of Convexity:
Specifying Efficiency Status and Estimating Returns to Scale
Chapter3 Institutional Change and Optimal Size of Universities
Chapter4 A Study on Directional Returns to Scale
Chapter5 Directional Congestion in the Framework of Data Envelopment Analysis
Chapter6 Integer Data in DEA: Illustrating the Drawbacks and Recognizing Congestion
Chapter7 Negative Data in DEA: Recognizing Congestion and Specifying the Least and the Most Congested Decision-Making Units
Chapter8 Estimating Capacity Utilization of Chinese Manufacturing Industries
Chapter9 Measuring the Chinese Regional Production Potential Using A Generalized
Capacity Utilization Indicator
Chapter10 Estimating Capacity Utilization of Chinese State Farms
Chapter11 Measuring the Capacity Utilization of the 48 Largest Iron and Steel Enterprises in China