A bibliometric analysis of picture book research between 1993 and 2015

Global Trends in the Research on Early Childhood Education during the COVID-19 Pandemic: A Bibliometric Analysis

During the COVID-19 pandemic, schools and preschools worldwide have been suspended, causing many challenges for students, parents, and teachers. Through home-schooling, preschool children struggle to accept new (online) learning modes. Teachers need to acquire digital skills quickly to deliver online teaching, while parents need to take on the role of a tutor at home to facilitate their children’s learning. This study aims to gauge the global trends in the research on early childhood education (ECE) during the COVID-19 pandemic, particularly considering the need for a swift response to the impact of the pandemic. We employed the bibliometric approach to studying ECE studies during the pandemic by identifying the countries of most-cited publications, most-cited categories of studies, and research methodologies used in the eligible studies (N = 507). Analysis reveals that technology integration in ECE has grown fast to timely facilitate online teaching and resolve varied challenges such as parental stress, a lack of resources, and the quality of education in this field. Based on the bibliometric approach, we highlighted research focusing on key themes such as online learning and teaching, physical activity, stress and mental health, and families in early childhood. This study offers a global perspective on ECE research during the pandemic and provides researchers, policymakers, and practitioners with future directions.

A Bibliometric Analysis on Nonpoint Source Pollution: Current Status, Development, and Future

Nonpoint source pollution (NPS) has become the leading factor of global water quality problems, attracting great attention from governments and researchers in various countries. Based on this situation, understanding the current research status of NPS can help guide future research. However, most of the current reviews only describe the research status of some specific aspects but fail to quantify the research hotspots and development trends on the whole, which limits the overall understanding of NPS. In this paper, bibliometrics was used to study the current status, hotspots, and frontiers of NPS research during 1991–2015, and the future research development was predicted. Over the past 15 years, there has been a remarkable growth trend in publication output, and the participation of countries/territories has also increased. Journal of Environmental Quality, Journal of Hydrology, and Total Environmental Science were the top three journals. Sharpley AN and Arnold JG from the USA were the most productive authors with the best quality articles. The major author clusters and research regions are located in North America and Europe, followed by East Asia. The United States dominates this research field, with the largest number of independent and collaborative articles. Chinese authors gained more attention through international cooperation. Keyword analysis confirmed that water quality and nutrients were the main concerns of NPS pollution research, which mainly involved a number of research topics, such as pollutant emission reduction research and the evaluation and simulation of pollutants’ migration and their transformation under different situations, while pesticides were less of a concern, which suggests that the abuse of pesticides has come under control. Meanwhile, SWAT was the dominating model in the last decade partly because it satisfied the growing needs of watershed-scale management.