The paper shows that in a reasonable production structure for a developing economy a brain drain of skilled labour may raise the welfare of the economy while an emigration of unskilled labour is welfare reducing. Also an emigration of skilled/unskilled labour lowers the urban unemployment of unskilled labour and widens the skilled-unskilled wage-gap. The paper provides an alternative explanatio...

Abstract This paper establishes the conditions under which indeterminacy can occur in a Neoclassical growth model with international labor mobility. In model, workers are supposed to move freely across countries without restrictions, and according Harris–Todaro mechanism that makes migration flows sensitive differences among markets conditions. The shows requires marginal returns immigrant be d...

This study tested whether there was a relationship between migration, unemployment, and urbanization based on the Harris-Todaro model in 12 regions of Turkey, which were formed according to NUTS-1 classification, period 2008 2019. For this purpose, panel data methods that consider cross-section dependency used study. As result analysis, it concluded valid TR1, TR2, TR3, TR4, TR5, TR6 regions. I...

Two new species of the genus Anoplocheylus Berlese, 1910 (Acari: Trombidiformes: Pseudocheylidae), A. sinai Bagheri sp. nov. and A. kazemii Bagheri sp. nov., are described and figured. An updated key to all known species of Anoplocheylus is also provided.

This "Part II morphology and cytoarchitecture" study is based on paraffin-embedded specimens in which the extracellular and intracellular matrix are preserved; single parallel, perpendicular, and transverse serial sections of the entire atrioventricular (AV) junction region (AVJR) and their correlation with photographs of the tissue blocks. As in Part I, the same major new findings are: 1) a co...

Two new species of Xestoblatta from northern Brazil are described, Xestoblatta buhrnheimi sp. n. and Xestoblatta rondonensis sp. n., included in the buscki group Gurney (1939), and new characters are added to the description of Xestoblatta mamorensis Lopes & Oliveira, 2006. Xestoblatta roppai Rocha e Albuquerque-Silva & Fraga, 1975, from midwestern Brazil is redescribed, including its genital c...