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A back-door brain drain
Stark, Oded; Byra, Lukasz (2012-04)In this paper we study the impact of the international migration of unskilled workers on skill formation and the average skill level in the home country. We analyze what appears to be the least threatening scenario from ... -
A basal forebrain to midbrain circuit drives exploratory locomotion
Mocellin, Petra (2023-10-26)Locomotion is a fundamental behavior that comprises different specialized neuronal networks. In the basal forebrain, the glutamatergic neurons of the medial septum and diagonal band of Broca (MSDB<sub>glu</sub>) can initiate ... -
A bitter choice turned sweet: How acknowledging individuals’ concern at having a low relative income serves to align utilitarianism and egalitarianism
Stark, Oded; Jakubek, Marcin; Kobus, Martyna (2015-03)When individuals’ utility is a convex combination of their income and their concern at having a low relative income (the weights attached to income and to the concern at having a low relative income sum up to one), the ... -
A bond order dissection ANOVA approach for efficient electronic structure calculations
Griebel, Michael; Hamaekers, Jan; Heber, Frederik (2014-03)In this article, we present a new decomposition approach for the efficient approximate calculation of the electronic structure problem for molecules. It is based on a dimension-wise decomposition of the space the underlying ... -
A Ceramic Vessel of Unknown Provenance in Bonn
Prager, Christian M.; Gronemeyer, Sven; Wagner, Elisabeth (2015-01-05)This initial epigraphic note by the members of the "Text Database and Dictionary of Classic Mayan" project is dedicated to text and image of a hitherto unpublished ceramic vessel that is on display in the Bonner ... -
A class of proximity-sensitive measures of relative deprivation
Stark, Oded; Bielawski, Jakub; Falniowski, Fryderyk (2017-09)We introduce a new class of generalized measures of relative deprivation. The class takes the form of a power mean of order <em>p</em> . A characteristic of the class is that depending on the value of the proximity-sensitive ... -
A concern about low relative income, and the alignment of utilitarianism with egalitarianism
Stark, Oded; Kobus, Martyna; Jakubek, Marcin (2011-10)A utilitarian social planner who maximizes social welfare assigns the available income to those who are most efficient in converting income into utility. However, when individuals are concerned about their income falling ... -
A critical comparison of migration policies: Entry fee versus quota
Stark, Oded; Byra, Lukasz; Casarico, Alessandra; Uebelmesser, Silke (2017-07)We ask which migration policy a developed country will choose when its objective is to attain the optimal skill composition of the country’s workforce, and when the policy menu consists of an entry fee and a quota. We ... -
A full three dimensional numerical simulation of the sediment transport and the scouring at a rectangular obstacle
Griebel, Michael; Burkow, Markus (2015-09)We employ a numerical simulation of the three-dimensional fluid flow and the simultaneous transport of sediment to reproduce current-driven sediment transport processes. In particular, the scouring at a rectangular obstacle ... -
A gain with a drain?: Evidence from rural Mexico on the new economics of the brain drain
Boucher, Steve; Stark, Oded; Taylor, J. Edward (2005-10)Evidence is presented in support of the “brain gain” view that the likelihood of migrating to a destination wherein the returns to human capital (schooling) are high creates incentives to acquire human capital in migrant-sending ... -
A generalized multiscale finite element method for poroelasticity problems I: linear problems
Brown, Donald L.; Vasilyeva, Maria (2015-04)In this paper, we consider the numerical solution of poroelasticity problems that are of Biot type and develop a general algorithm for solving coupled systems. We discuss the challenges associated with mechanics and flow ... -
A generic model for analyzing nexus issues of households’ bioenergy use
Djanibekov, Utkur; Finger, Robert; Guta, Dawit Diriba; Gaur, Varun; Mirzabaev, Alisher (2016-01)Bioenergy is a major source of energy in developing countries. However, increasing demand for agricultural commodities can lead to a stronger competition for natural resources with the bioenergy production. The nexus among ... -
A geopolitical gem: How Greenland can be a test case for a more ambitious EU
Verhelst, Koen (2023)Mit der Eröffnung eines diplomatischen Büros in Grönland unternimmt die EU Schritte, um ihre Arktis-Strategie in die Praxis umzusetzen. Der Inselstaat wird ein Akteur des 21. Jahrhunderts in den Bereichen Nordpol-Logistik, ... -
A gradient sampling method on algebraic varieties and application to nonsmooth low-rank optimization
Hosseini, Seyedehsomayeh; Uschmajew, André (2016-10)In this paper, a nonsmooth optimization method for locally Lipschitz functions on real algebraic varieties is developed. To this end, the set-valued map <em>ε</em>-conditional subdifferential <em>x</em> → ... -
A Hundred Years of The Secret Garden: Frances Hodgson Burnett’s Children’s Classic Revisited
Gymnich, Marion; Lichterfeld, Imke (2012)Although Frances Hodgson Burnett published numerous works for an adult readership, she is mainly remembered today for three novels written for children: Little Lord Fauntleroy (1886), A Little Princess (1905) and The Secret ... -
A journey through the history of commodity derivatives markets and the political economy of (de)regulation
Algieri, Bernardina (2018-12)The present study examines the dynamics and regulatory regimes of commodity derivatives markets through time. The historical perspective allows to identify the reasons behind the use of derivatives and the impact of changing ... -
A LAsMA Survey of the Milky Way: Effects of Feedback on Molecular Clouds
Mazumdar, Parichay (2022-09-02)The advent of radio and (sub) millimetre astronomy has opened the world of molecular clouds (MCs) to astronomers' wonder. At the turn of the 21st century, MC surveys have helped us better understand them. How MCs form, ... -
A molecular dynamics study of cementitious calcium silicate hydrate (C-S-H) gels
Dolado, Jorge S.; Griebel, Michael; Hamaekers, Jan (2007-05)In this article we study the polymerization of silicic acids (Si(OH)<sub>4</sub>) in the presence of calcium ions by molecular dynamics simulations. We focus on the formation and structure of cementitious calcium silicate ... -
A molecular dynamics study of the aluminosilicate chains structure in Al-rich calcium silicate hydrated (C-S-H) gels
Manzano, Hegoi; Dolado, Jorge S.; Griebel, Michael; Hamaekers, Jan (2007-11)Calcium silicate hydrated (C-S-H) gel is the principal binding phase of the cement paste and responsible for its strength. It is basically composed of silicate chains held together with CaO layers, where different guest ... -
A molecular dynamics study on fullerene–implanted carbon nanotori as electronmagnetic sensing and emitting devices
Griebel, Michael; Heber, Frederik (2009-10)Open-ended carbon nanotubes have been found to form toroidal structures [17]. These specific structures bear striking resemblance to electrographic coils. Two modes of action can be thought of: Either the metallic conductivity ...