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  • 1
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    Bonn: University of Bonn, Center for Development Research (ZEF)
    Publication Date: 2018-06-27
    Description: This paper explores the following chain of conjectures: rising use of the internet, the widespread access to global information, and intensified communication between regions and countries brought about, for example, by intensified trade links bring about expansion of people's social space and their set of comparators; this expansion increases people's stress and strengthens their inclination to resort to migration as a means of reducing this heightened stress. Other things held constant, the expansion of people's social space intensifies their inclination to move across geographical space.
    Keywords: A12 ; A14 ; B41 ; D01 ; F15 ; F22 ; J61 ; O15 ; Z13 ; ddc:330 ; expansion of social space ; relative deprivation ; migration
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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  • 2
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    Bonn: University of Bonn, Center for Development Research (ZEF)
    Publication Date: 2018-06-27
    Description: An increase in the probability of work abroad, where the returns to schooling are higher than at home, induces more individuals in a developing country to acquire education, which leads to an increase in the supply of educated workers in the domestic labor market. Where there is a sticky wage-rate, the demand for labor at home will be constant. With a rising supply and constant demand, the rate of unemployment of educated workers in the domestic labor market will increase. Thus, the prospect of employment abroad causes involuntary educated unemployment at home. A government that is concerned about educated unemployment and might therefore be expected to encourage unemployed educated people to migrate will nevertheless, under certain conditions, elect to restrict the extent of the migration of educated individuals.
    Keywords: E24 ; F22 ; J24 ; O15 ; ddc:330 ; Bildungsinvestition ; Facharbeiter ; Lohnrigidität ; Unterbeschäftigung ; Arbeitslosigkeit ; Auswanderung ; Bildungsertrag ; Erwartungstheorie ; Theorie
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 3
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    Bonn: University of Bonn, Center for Development Research (ZEF)
    Publication Date: 2018-06-27
    Description: 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 the point of view of its effect on the supply of skills at home: namely, migration exclusively by unskilled workers. Somewhat surprisingly, we find that even without the departure of skilled workers, the home country suffers reduced aggregate skill formation. Although as a response to a higher wage rate per unit of human capital in the new equilibrium skilled workers choose to accumulate more human capital than before the opening up to migration of unskilled workers, the number and share of skilled workers in the home country's workforce fall. The combined effect is a decrease in the average level of human capital in the home country.
    Keywords: F22 ; J24 ; O15 ; ddc:330 ; Migration of unskilled workers ; Human capital formation ; Depletion of human capital ; Ungelernte Arbeitskräfte ; Internationale Wanderung ; Bildungsinvestition ; Brain Drain ; Theorie
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 4
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    Bonn: University of Bonn, Center for Development Research (ZEF)
    Publication Date: 2018-06-27
    Description: We draw a distinction between the social integration and economic assimilation of migrants, and study an interaction between the two. We define social integration as blending into the host country´s society, and economic assimilation as acquisition of human capital that is specific to the host country´s labor market. We show that a non-integrated migrant finds it optimal to acquire a relatively limited quantity of human capital; with fellow migrants constituting his only comparison group, a non-integrated migrant does not have a relative-deprivation-based incentive to close the income gap with the natives. However, when a migrant is made to integrate, his social proximity to the natives exposes him to relative deprivation, which in turn prompts him to form more destination-specific human capital in order to increase his earnings and narrow the income gap with the natives. In this way, social integration becomes a catalyst for economic assimilation.
    Keywords: D01 ; F22 ; J15 ; J24 ; J61 ; O15 ; Z10 ; ddc:330 ; Assimilation ; Integration ; Social proximity ; Interpersonal comparisons ; Relative deprivation ; Human capital formation
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 5
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    Bonn: University of Bonn, Center for Development Research (ZEF)
    Publication Date: 2018-06-27
    Description: A migration network is modeled as a mutually beneficial cooperative agreement between financially-constrained individuals who seek to finance and expedite their migration. The cooperation agreement creates a network: established migrants contract to support the subsequent migration of others in exchange for receiving support themselves. When the model is expanded to study cooperation between more than two migrants, it emerges that there is a finite optimal size of the migration network. Consequently, would-be migrants in the sending country will form a multitude of networks, rather than a single grand network.
    Keywords: D01 ; D71 ; D90 ; F22 ; F24 ; J61 ; O15 ; ddc:330 ; Migration networks ; Schedule of migration ; Sequential migration ; Affinity ; Interpersonal bonds ; Cost of migration ; Migranten ; Soziales Netzwerk ; Verschuldungsrestriktion ; Internationale Wanderung ; Kosten ; Theorie
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 6
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    Bonn: University of Bonn, Center for Development Research (ZEF)
    Publication Date: 2018-06-27
    Description: This paper studies the growth dynamics of a developing country under migration. Assuming that human capital formation is subject to a strong enough, positive intertemporal externality, the prospect of migration will increase growth in the home country in the long run. If the external effect is less strong, there exists at least a level effect on the stock of human capital in the home country. In either case, the home country experiences a welfare gain, provided that migration is sufficiently restrictive. These results, obtained in a dynamic general equilibrium setting, extend and strengthen the results of Stark and Wang (2002) obtained in the context of a static model.
    Keywords: F22 ; I30 ; J24 ; J61 ; O15 ; O40 ; ddc:330 ; Overlapping-generations growth model ; Intertemporal human capital externalities ; Long-run growth effect of the prospect of migration ; Social welfare gains
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 7
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    Bonn: University of Bonn, Center for Development Research (ZEF)
    Publication Date: 2018-06-27
    Description: We relate to others in two important ways: we care about others, and we care about how we fare in comparison to others. In some contexts, these two forms of relatedness interact. Caring about others can conveniently be labeled altruism. Caring about how we fare in comparison with others who fare better than ourselves can conveniently be labeled relative deprivation. I provide examples of domains in which the incorporation of altruism and relative deprivation can point to novel perspectives and suggest rethinking, and possibly revising, long-held views. And I show that there are domains in which consideration of relative deprivation can substitute for the prevalence of altruism, and vice versa. I conclude that this is a fascinating sphere for research on economics and social behavior.
    Keywords: D01 ; D03 ; D13 ; D31 ; D63 ; D64 ; F22 ; F24 ; J61 ; O15 ; ddc:330 ; Altruism ; relative deprivation ; economic and social behavior
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 8
    ISSN: 1057-9257
    Keywords: gallium nitride ; nanocrystallites ; detonation ; gallium azide ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: High quality nanoscale, phase-pure hexagonal gallium nitride (GaN) crystallites have been synthesized by the thermal induced detonation of molecular precursors of the type (R3N)Ga(N3)3 (R=CH3, C2H5, etc.). The method allows the control of the particle size regime from 2 to about 1000 nm. X-ray diffraction and Rietveld simulations revealed an anisotropic platelet-like shape of the particles. The obtained GaN material was as well characterized by transmission electron microscopy and electron diffraction, photoluminescence spectroscopy, SEM, IR, RAMAN, thermal gas effusion/mass spectrometry, thermal analysis, elemental analysis. Gas absorption measurements (BET method) showed a specific surface area of about 90 m2 · g-1. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wurden die Verschiebungen untersucht, die durch Tris-(dipivaloylmethano)-europium und Tris-(dipivaloylmethano)-praseodym im NMR- Spektrum versehiedener Derivate substituierter Phenole hervorgerufen werden. Der Zweck dieser Arbeiten war, die Möglichkeiten zu erfassen, die diese Verschiebereagenzien als Hilfsmittel in der NMR-Analyse von Phenolharzen bieten, und Information über Verschiebungen bei Molekülen zu gewinnen, die mehr als eine Koordinationsposition besitzen.
    Notes: An investigation into the shifts induced in the NMR spectra of some derivatives of substituted phenols by tris(dipivalomethanato)europium and tris(dipivalomethanato)praseodymium is reported. The phenol derivatives were studied to ascertain the possible utility of the shift reagents as an aid in the analysis of phenolformaldehyde resins by NMR spectroscopy, and to gain information on induced shifts with molecules having more than one possible co-ordination site.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wurde eine Voruntersuchung des Einflusses unternommen, den die Verschiebereagenzien Tris-(dipivaloylmethano)-europium uncl Tris-(dipivaloylmethano)-pra-seodym auf das NMR-Spektrum des Diglyzidyläthers des Bisphenol A ausüben. Es ergab sich, daß die Signale der am Epoxidring anliegenden Protonen durch den Zusatz dieser Chelate weit mehr als die Signale der exozyklischen -OCH2-Gruppen verschoben werden. Die Verschiebung kann man durch den Zusatz eines Alkohols rückgängig machen, der vorzugsweise mit dem Verschiebemittel reagiert.
    Notes: A preliminary study has been made of the effects of the shift reagents Eu (DPM)3 and Pr(DPM)3 on the NMR spectrum of Bisphenol A diglycidyl ether (I). Protons attached to the epoxy ring were observed to shift appreciably more than protons of the exocyclic —OCH2— group, on addition of these chelates. The shifts could be reversed by addition of an alcohol, which interacted preferentially with the shift reagent.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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