This study examined the hegemonic transition between the US and China in a network analysis. Indicators of gross output such as GDP, GNP, and CINC, when used in analyzing state power or hegemonic transitions between superpowers, do not accurately reflect states' influence. Unlike these...

An ERGM is a statistical model that can verify the existence of links in networks. In specific, an ERGM social selection model verifies various effects of variables related to attributes of actors. Estimates related to attribute variables represent the probability that particular attributes of...

It is important to investigate international relations at the system level because the system is the outcome of interaction among all states and trends in this system come back to affect individual states. In this study, we clearly demonstrate that the system of international relations is a...

While recent international negotiations to combat climate change have led governments around the world to invest in R&D in the energy sector, funds allocated to R&D investment are limited during global economic downturns and depending on national economic conditions. A systematic approach and...