The provided document is a collection of research papers and studies that examine the concept of elasticity and its applications in different fields. The assignments include evaluating residential customer elasticity for incentive-based demand response programs, analyzing income and wealth effects on private-label demand, and measuring the impact of enterprise integration on firm performance using data envelopment analysis. Additionally, the document covers topics such as product reformulation versus consumer choice, supply and demand in microeconomics, and the effect of credit supply on trade. The studies aim to provide insights into the factors influencing economic decisions and behavior, making it a valuable resource for students and researchers in economics and related fields.