Social impact operations at the global base of the pyramid
梳理了运营管理和运筹学领域旨在改善全球金字塔底层（日均生活费低于2.50美元的27亿人）生活条件的社会影响研究，总结了25年来相关文献的规模与范围，并呼吁该领域积极承担社会责任、聚焦最紧迫问题。
In recent years, our field has seen an increase in research that explicitly emphasizes an objective of social impact in the most unprivileged parts of the world—the so‐called global base of the pyramid (BOP; referring to the 2.7 billion people living on less than $2.50 per day, the largest but most resource‐poor economic group globally). This trend seems to cut across the traditional application areas of operations management (OM) and operations research (OR), and it coincides with an increased emphasis on environmental, social, and corporate governance (ESG) values in industry, a greater prominence of the United Nations' Sustainable Development Goals (UN SDGs), and increases in social impact research in other academic fields. In this paper, we pull together representative examples from our field of what we consider as social impact research aimed at improving living conditions at the BOP. We first examine the scale and scope of work published in Production and Operations Management over the last 25 years, and then provide a broader summary of the spectrum of research within OM and OR that constitute this stream of literature. We adopt the stance that OM and OR should embrace the current societal emphasis on social responsibility and positive social impact—and strive to contribute to the most pressing problems for those living at the BOP. Although our field has produced a body of work addressing such problems, individual research projects of this type are usually not viewed as falling under the broad umbrella of social impact operations (SIO), but rather are classified as part of the closest application area. By providing an initial overview of this work, we wish to celebrate the contribution of our field to this area, highlight common themes, catalyze a dialogue across application areas among researchers with a common perspective, and identify opportunities for future research.