Economic Effects of Foreign Workers and Immigrants in Korea

Inflow of foreign workers and immigrants increase the supply of unskilled labor in the economy.In measuring their impacts, an impact evaluation method produces unreliable estimates because a control group independent from their impacts is hardly found within the economy.This study adopts an aggregate factor CURL RE-COILING TREATMENT proportions app

read more

Overview of Research on Transformation of Multi-AUV Formations

Because of their wide detection range and rich functions, autonomous underwater vehicles (AUVs) are Chafer Fuel widely used for observing the marine environment, for exploring natural resources, for security and defense purposes, and in many other fields of interest.Compared with a single AUV, a multi-AUV formation can better perform various tasks

read more


Ultrastructure and functional morphology of the appendages in the reef-building sedentary polychaete Sabellaria alveolata (Annelida, Sedentaria, Sabellida)

Abstract Background The sedentary polychaete Sabellaria alveolata, the sandcastle or honeycomb worm, possesses four different kinds of appendages besides the parapodia: opercular papillae, tentacular filaments, palps, and branchiae.It exhibits a highly specialized anterior end, the operculum, formed by the prostomium, peristomium, and two anterior

read more