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  • Articles  (21)
  • I21  (8)
  • Condensed Matter: Electronic Properties, etc.  (5)
  • Polymer and Materials Science  (5)
  • R23  (5)
  • 1
    ISSN: 0935-9648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Investigations into the electrolytic-potentiostatic etching of stainless steels in 10 n NaOH, using a coulometerCurrent density/potential characteristics can only provide qualitative indications concerning the phenomena encountered with potentiostatic etching in 10 n NaOH. The process is best carried out in the trans-passive zone. Identification is based, not on the selective dissolution of certain standard components, but on the interference colours which can be observed as a result of the formation of cover layers of different thickness. The charge density/time characteristics also permit quantitative indications of the different phases. Current density/time curves permit a clarification of the mechanism govering the formation of cover layers. A ferritic steel (28 pC Cr) and a NiCr alloy (45 pC Cr) were found to follow a cubic law of growth, whilst CrNi steel 18-8 is initially governed by an approximately logarithmic law, followed by a zone extending over several hours where the growth begins to follow a parabolic law.
    Notes: Stromdichte-Potential-Kurven ermöglichen nur qualitative Aussagen über die Vorgänge beim potentiostatischen Ätzen in 10 n NaOH. Am günstigsten ist Ätzen im Transpassivbereich. Die Identifizierung erfolgt dabei nicht durch selektive Auflösung bestimmter Gefügebestandteile, sondern aufgrund der Interferenzfarben, die infolge der Bildung unterschiedlich starker Deckschichten zu beobachten sind. Die Ladungsdichte-Zeit-Kurven ermöglichen auch Aussagen über die Mengen der einzelnen Phasen. Stromdichte-Zeit-Kurven ermöglichen eine Aufklärung des Deckschichtbildungsmechanismus. Für einen ferritischen Stahl (28% Cr) und eine NiCr-Legierung mit 45% Cr gilt ein kubisches Wachstumsgesetz, während für CrNi-Stahl 18-8 zunächst ein annähernd logarithmisches Gesetz gilt, an das sich ein mehrstündiger Bereich anschließt, in dem übergang zu einem parabolischen Schichtwachstum erfolgt.
    Additional Material: 24 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
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    Berlin: Deutsches Institut für Wirtschaftsforschung (DIW)
    Publication Date: 2016-02-08
    Description: We investigate second generation migrants and native children at several stages in the German education system to analyze the determinants of the persistent native-migrant gap. One part of the gap can be attributed to differences in socioeconomic background and another part remains unexplained. Faced with this decomposition problem, we apply linear and matching decomposition methods. Accounting for differences in socioeconomic background, we find that migrant pupils are just as likely to receive recommendations for or to enroll at any secondary school type as native children. Comparable natives, in terms of family background, thus face similar difficulties as migrant children. Our results point at more general inequalities in secondary schooling in Germany which are not migrant-specific.
    Keywords: J15 ; J24 ; I21 ; ddc:330 ; migration ; education ; human capital ; Germany ; tracking
    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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  • 5
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    Berlin: Deutsches Institut für Wirtschaftsforschung (DIW)
    Publication Date: 2016-02-08
    Description: The major event of the 9/11 terror attacks is likely to have induced an increase in anti-immigrant and anti-foreigner sentiments, not only among US residents but also beyond US borders. Using longitudinal data from the German Socio-Economic Panel and exploiting exogenous variation in interview timing throughout 2001, I find that the terror attacks in the US caused an immediate shift of around 40 percent of one within standard deviation to more negative attitudes toward immigration and resulted in a considerable decrease in concerns over xenophobic hostility among the German population. Furthermore, in exploiting within-individual variation this quasi-experiment provides evidence on the role of education inmoderating the negative terrorism shock.
    Keywords: F22 ; I21 ; J61 ; ddc:330 ; immigration ; attitudes ; education ; September 11 ; terrorism
    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: Institute for the Study of Labor (IZA)
    Publication Date: 2017-06-21
    Description: Immigrants are typically not evenly distributed within host countries; instead they tend to cluster in particular neighborhoods. But does clustering in ethnic enclaves help explain the persistent differences in employment rates and earnings between immigrants and the native population? Empirical studies consistently find that residing in an enclave can increase earnings. While it is still ambiguous whether mainly low-skilled immigrants benefit, or whether employment probabilities are affected, it is clear that effects are driven by enclave “quality” (in terms of income, education, and employment rates) rather than enclave size.
    Keywords: J15 ; R23 ; Z10 ; ddc:330 ; immigrant concentration ; ethnic networks ; immigrant labor market integration
    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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    Berlin: Deutsches Institut für Wirtschaftsforschung (DIW)
    Publication Date: 2018-06-26
    Description: A lack of cultural integration is often blamed for hindering immigrant families' economic progression. This paper is a first attempt to explore whether immigrant parents' ethnic identity affects the next generation's human capital accumulation in the host country. Empirical results based on data from the German Socio-Economic Panel (SOEP) indicate that maternal majority as well as paternal minority identity are positively related to the educational attainment of second-generation youth - even controlling for differences in ethnicity, family background and years-since-migration. Additional tests show that the effect of maternal majority identity can be explained by mothers' German language proficiency, while the beneficial effect of fathers' minority identity is not related to language skills and thus likely to stem from paternal minority identity per se.
    Keywords: I21 ; J15 ; J16 ; ddc:330 ; Ethnic Identity ; Second-Generation Immigrants ; Education ; Migranten ; Kulturelle Identität ; Bildungsverhalten ; Bildungsniveau ; Generationenbeziehungen ; Schätzung ; Deutschland
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 8
    Publication Date: 2019-02-22
    Description: Estimating the effect of ethnic capital on human capital investment decisions is complicated by the endogeneity of immigrants’ location choice, unobserved local correlates and the reflection problem. We exploit the institutional setting of a rare immigrant settlement policy in Germany, that generates quasi-random assignment across regions, and identify the causal impact of heterogeneous ethnic capital on educational outcomes of children. Correcting for endogenous location choice and correlated unobservables, we find that children of low-educated parents benefit significantly from the presence of high-educated parental peers of the same ethnicity. High educated parental peers from other ethnicities do not influence children’s learning achievements. Our estimates are unlikely to be confounded by the reflection problem since we study the effects of parental peers’ human capital which is pre-determined with respect to children’s outcomes. Our findings further suggest an increase in parental aspirations as a possible mechanism driving the heterogeneous ethnic capital effects, implying that profiling peers or ethnic role models could be important for migrant integration policies.
    Keywords: R23 ; J15 ; I21 ; ddc:330 ; Education ; Ethnic Capital ; Germany ; Peer Effects ; Policy Experiment
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 9
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    Bonn: Institute for the Study of Labor (IZA)
    Publication Date: 2018-11-15
    Description: We investigate second generation migrants and native children at several stages in the German education system to analyze the determinants of the persistent native-migrant gap. One part of the gap can be attributed to differences in socioeconomic background and another part remains unexplained. Faced with this decomposition problem, we apply linear and matching decomposition methods. Accounting for differences in socioeconomic background, we find that migrant pupils are just as likely to receive recommendations for or to enroll at any secondary school type as native children. Comparable natives, in terms of family background, thus face similar difficulties as migrant children. Our results point at more general inequalities in secondary schooling in Germany which are not migrant-specific.
    Keywords: J15 ; J24 ; I21 ; ddc:330 ; migration ; education ; human capital ; Germany ; tracking ; Migranten ; Schüler ; Bildungsniveau ; Vergleich ; Bevölkerung ; Sozialer Status ; Deutschland
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 10
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    Bonn: Institute for the Study of Labor (IZA)
    Publication Date: 2018-11-15
    Description: The major event of the 9/11 terror attacks is likely to have induced an increase in anti-immigrant and anti-foreigner sentiments, not only among US residents but also beyond US borders. Using longitudinal data from the German Socio-Economic Panel and exploiting exogenous variation in interview timing throughout 2001, I find that the terror attacks in the US caused an immediate shift of around 40 percent of one within standard deviation to more negative attitudes toward immigration and resulting in a considerable decrease in concerns over xenophobic hostility among the German population. Furthermore, in exploiting within-individual variation this quasi-experiment provides evidence on the role of education in moderating the negative terrorism shock.
    Keywords: F22 ; I21 ; J61 ; ddc:330 ; immigration ; attitudes ; education ; September 11 ; terrorism ; Ethnische Diskriminierung ; Deutsche ; Bildungsniveau ; Einwanderung ; Deutschland ; Politische Gewalt ; USA
    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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