During the 1990s, U.S. welfare policy underwent dramatic reforms aimed at promoting employment and reducing dependence. Although the immediate effects on adult labor supply and family income have been studied extensively, this paper is the first to evaluate the long-run effects on children’s...

States differ substantially in higher education policies. Little is known about the effects of state policies on the performance of public colleges and universities, largely because no clear measures of college quality exist. In this paper, I estimate the average quality of public colleges of...

Income distribution varies considerably across countries; it tends to decrease with development in some countries, but just the opposite occurs in other countries. This paper provides a theoretical and empirical investigation of the persistent differences in income distribution across countries...

Purpose With the development of digitalization and interconnection, there is a growing need for enterprise customers to ensure the compatibility of the third-party components they are using in the manufacturing process, thus raising the integration requirements for the Industrial Internet...

Purpose This study aims to present a type of metamorphic mechanism-based quadruped crawling robot. The trunk design of the robot has a metamorphic mechanism, which endows it with excellent crawling capability and adaptability in challenging environments. Design/methodology/approach The robot...