김병연 교수

Abstract This paper uses a household survey of the Romanian informal economy to analyse the effects of poverty on informal economy participation. We begin by developing a simple theoretical model, which shows that the participation is driven by low income and the gap between desired and actual income level. We then estimate the determinants of households’ participation in the informal economy. Empirical findings are consistent with the theoretical prediction. In addition, a positive association

Abstract This paper uses the Russian Longitudinal Monitoring Survey (RLMS) to analyse the dynamics of moonlighting by the working‐age population. We find that moonlighting is transitory and that a desire to switch jobs expressed in the past is positively related to moonlighting in the present and to actual job changes in the future. We also find that workers who moonlighted as self‐employed in the past represent 26.5 percent of the new self‐employed. These results suggest that moonlighting in Ru

North Korea is one of the most closed and secretive societies in the world. Despite a high level of interest from the outside world, we have very little detailed information about how the country functions economically. In this valuable book for both the academic and policy-making circles, Byung-Yeon Kim offers the most comprehensive and systematic analysis of the present day North Korean economy in the context of economic systems and transition economics. It addresses what is really happening i

This paper presents the coordination and control for a freeway traffic network. Since a mismatch between the freeway capacity and the amount of traffic flow leads to freeway congestion, it is required to achieve the desired traffic density in the freeway traffic network. The traffic density of each cell is determined by the on-ramp flow and the main stream inflow. In addition, each cell has different on-ramp-flow constraints and main-stream-inflow constraints. Thus, it is required to coordinate

Blood plasma separation from whole blood is often limited by numerous blood cells which can compromise separation processes and thus deteriorate separation performance such as purity and throughput. To address this challenge, we present a microfluidic pipet tip composed of slant array ridges that enable autonomous blood cell focusing without significant deviation as well as facilitating a high degree of parallelization without compromising separation purity. With these advantages, we achieved hi

Functional and phenotypic analyses of peripheral white blood cells provide useful clinical information. However, separation of white blood cells from peripheral blood requires a time-consuming, inconvenient process and thus analyses of separated white blood cells are limited in clinical settings. To overcome this limitation, a microfluidic separation platform is developed to enable deterministic migration of white blood cells, directing the cells into designated positions according to a ridge pa

North Korea is one of the most closed and secretive societies in the world. Despite a high level of interest from the outside world, we have very little detailed information about how the country functions economically. In this valuable book for both the academic and policy-making circles, Byung-Yeon Kim offers the most comprehensive and systematic analysis of the present day North Korean economy in the context of economic systems and transition economics. It addresses what is really happening i