Information Asymmetry, Education Signals and the Case of Ethnic and Native Germans

This paper analyses the effects of education signals for Ethnic Germans and Germans without a migration background (“Native Germans”). We base our analysis on a sorting model with productivity enhancing effects of education. We compare whether the signalling value differs between the migrants and non-migrants in the German labour market. Starting from the theoretical result that only a separating equilibrium can exist, we find substantial empirical differences between Ethnic and Native Germans with the same formal education level. This empirical analysis is done with a completely new dataset based on administrative data from the German Federal Employment Agency.sorting theory, human-capital theory, returns to education, migration

Information asymmetry, education signals and the case of Ethnic and Native Germans

"This paper analyses the effects of education signals for Ethnic Germans and Germans without a migration background ('Native Germans'). We base our analysis on a sorting model with productivity enhancing effects of education. We compare whether the signalling value differs between the migrants and non-migrants in the German labour market. Starting from the theoretical result that only a separating equilibrium can exist, we find substantial empirical differences between Ethnic and Native Germans with the same formal education level. This empirical analysis is done with a completely new dataset based on administrative data from the German Federal Employment Agency." (Author's abstract, IAB-Doku) ((en))integrierte Erwerbsbiografien, Bildungsniveau, Bildungsabschluss, Inländer, Aussiedler, Hochqualifizierte, mittlere Qualifikation, Niedrigqualifizierte, Lohnhöhe, Lohnunterschied

Inequalities for Cyclic Functions

AbstractThe nth cyclic function is defined byϕn(z)=∑ν=0∞znν(nν)!(z∈C,2⩽n∈N). We prove that if k is an integer with 1⩽k⩽n−1, then(n−k)!ϕ(k)n(x)xn−kα<ϕn(x)<(n−k)!ϕ(k)n(x)xn−kβ holds for all positive real numbers x with the best possible constantsα=1andβ=2n-k over n

Automatic Recognition of Object Use Based on Wireless Motion Sensors

In this paper, we present a method for automatic, online detection of a user’s interaction with objects. This represents an essential building block for improving the performance of distributed activity recognition systems. Our\ud method is based on correlating features extracted from motion sensors worn by the user and attached to objects. We present a complete implementation of the idea, using miniaturized wireless sensor nodes equipped with motion sensors. We achieve a recognition accuracy of 97% for a target response time of 2 seconds. The implementation is lightweight, with low communication bandwidth and processing needs. We illustrate the potential of the concept by means of an interactive multi-user game

Cloning and characterization of the ALG3 gene of Saccharomyces cerevisiae

The Saccharomyces cerevisiae alg3-1 mutant is descilbed as defective in the biosynthesis of dolichol-linked oligosaccharides (Huffaker and Robbins, Proc. Natl. Acad. Sci. USA, 80, 7466-7470, 1983). Man5GlcNAc2-PP-Dol accumulates in alg3 cells and Endo H resistant carbohydrates are transferred to protein by the oligosaccharyltransferase complex. In this study, we describe the cloning of the ALG3 locus by complementation of the temperature sensitive growth defect of the alg3 stt3 double mutant. The isolated ALG3 gene complements both the defect in the biosynthesis of lipidlinked oligosaccharides of the alg3-mutant and the underglycosylation of secretory proteins. The inactivation of the nonessential ALG3 gene results in the accumulation of lipid-linked Man5GlcNAc2 and protein-bound carbohydrates which are completely Endo H resistant. The ALG3 locus encodes a potential ER-transmembrane protein of 458 amino acids (53 kDa) with a C-terminal KKXX-retrieval sequenc

Synsedimentary Vertisols in Upper Jurassic sequences of the Wiehengebirge mountain range (Northwest-Germany)

Als abschließende Glieder regressiver Sedimentationsphasen treten im westlichen Wiehengebirge innerhalb oberjurassischer Sand-, Mergel- und Tonstein-Wechselfolgen "Bröckeltonsteine" auf, die sich durch große Mächtigkeit (bis über 10 m), homogene schluffig-tonige Textur, auffallend grobpolyedrische Struktur, glänzende, mit etwa 20°–40° Grad geneigte Gleitflächen ("Slickensides") und domartige, einander randlich durchschneidende Aufwölbungs-Strukturen von 1,5 - 3 m horizontaler Ausdehnung auszeichnen. Die in semiariden bis subhumiden Überflutungs- Landschaften gebildeten Sedimente wurden synsedimentär durch Peloturbation beeinflusst. Dies erklärt die teilweise extrem große Mächtigkeit der vertischen Merkmale. Mikromorphologisch zeigt das Material deutlich ausgeprägte Bioturbations-Merkmale sowie Stress-Kutane. Erhöhte Temperaturen durch die Aktivität eines Plutons in der Kreide-Zeit scheinen eine Smektit-zu-Illit-Umwandlung und eine diagenetische Kornvergrößerung bewirkt zu haben. Im Verlauf der synsedimentären Bodenbildung kam es zu einer deutlichen Kompaktierung, sodass Groß-Dinosaurier über die Flächen hinweg schreiten konnten, ohne tiefer als etwa 5 cm einzusinken. Im Quartär dürfte es zu teilweise intensiver Eisen-Umverteilung, zum Eindringen von Ton in Spalten sowie zur Freilegung der bereits im Jura präformierten Polyeder ("Bröckel") gekommen sein.Within Upper Jurassic sequences exposed in numerous profiles of the mountain range of „Wiehengebirge“ (Northwest-Germany), conspicuously uniform fluviatile sediments have been deposited as final sections of regressive, near-continental sedimentary cycles under semi-arid to subhumid conditions. Their layering is rather indistinct despite occasional thicknesses of 10 m and more. It tends to fall appart in medium- to large-sized polyhedra – hence its conventional designation in German literature as „Bröckeltonstein“ („crumbly claystone“). The material exhibits shiny slickensides which form part of conspicuous dome-shaped aggregates following vertically in close distance parallel to each other and rising concentrically to an inner top with inclination angles of 20–40°. The horizontal size of such domes ranges from 1.5 to 3 m, and their shiny surfaces marginally cut those of the neighbouring ones. The unexpected depth of these vertic features is in contrast to recent Vertisols and can be related to synsedimentary soil development. Initial vertic structures may have been repeatedly brought in deeper positions caused by repetitive burial under thin fluviatile sediments. Micromorphologically, the material exhibits strong indications of bioturbation as well as stress cutans. High temperature caused by long lasting plutonic activity may have enhanced diagenetic smectite to illite transformation and grain size increase. Compaction in course of synsedimentary vertisol genesis seems to have been adequate to enable great dinosaurs to stride across such land surfaces leaving foot imprints of no more than 5 cm depth. In the course of the Quarternary period, an intensive iron redistribution aswell as clay illuviationwithin cracks and exposure of preformated polyhedrical structures („Bröckel“) caused by periglacial weathering processes seems to have taken place

Schaffenrathʼs Inscription Column in Pisani rov, Postojnska jama

Napisi lahko pripomorejo k razjasnitvi nezadostno dokumentirane zgodovine odkrivanja glavnih rovov Postojnske jame. Ta čas je bil povezan s tremi osebami: Josipom Jeršinovičem plemenitim Löwengreif, Alojzom Schaffenrathom in grofom Francem Hohenwartom. Temelječ na sodobnih zapisih Schaffenratha (1834), Hohenwarta (1830, 1832a,b) in Schmidla (1854), avtorji razpravljajo o okoliščinah in času njihovih raziskovanj glavne jame ter menijo, da ta ni bila odkrita do prihoda nadvojvode Ferdinanda avgusta 1819. Eden najstarejših napisov iz tega časa je na kapniškem stebru v Pisanem rovu, 90 m od tam, kjer se odcepi od glavnega rova. Tu je Schaffenrath 1825 zapisal imeni Löwengreifa, Gospodaritscha in svoje. Ta steber je morda edino mesto v Postojnski jami, kjer so vsa tri imena skupaj. Če upoštevamo razmeroma pozne raziskave glavnega rova, je letnica 1825 morda leto odkritja tega dela jame. To potrjuje tudi dejstvo, da tega dela jame ni na prvem objavljenem zemljevidu (Bronn, 1826, temelječ na zemljevidu Foÿker/Schaffenrath iz okoli 1821). 1832 je bil odprt notranji del Pisanega rova in imenovan v čast nadvojvode Janeza. Na steber so dodali še več napisov, več pa jih je tudi dalje po rovu. Iz 1836 je podpis J(ozef) Hauer, to je paleontolog in oče Franca plemenitega Hauerja. Tudi Anton Perko, mlajši brat Ivana Andreja, je zapustil svoje ime. I.A. Perko je podpisan 1892 v Rovu brez imena, v letu preden so on, njegov brat in drugi v Trstu ustanovili študentsko jamarsko društvo “Hades”. Raziskovanje in dokumentiranje zgodovinskih napisov lahko pomaga pri rekonstrukciji in razlagi zgodovine raziskav in odkrivanj te najpomembnejše turistične jame.Inscriptions may help to clarify the incompletely documented early history of the discovery of the main passages in Postojnska jama. This period is associated with three people: Josef (Josip) Jeršinovič Ritter von Löwengreif, Alois Schaffenrath, and Franz Graf von Hohenwart. Based on the contemporary writings of Schaffenrath (1834), Hohenwart (1830, 1832a,b) and Schmidl (1854) the authors discuss the circumstances and timing of the exploration of the main cave, suggesting that the main passage was not discovered until after the visit of Erzherzog Ferdinand in August 1819. One of the earliest inscriptions from that period is found on a column in Pisani rov, 90 m from its branch from the main passage. Here Schaffenrath left in 1825 the names of Löwengreif, of Gospodaritsch, and of himself. This column may be the only site in Postojnska jama featuring all three names in one place. In view of the rather late exploration of the main passage, the date 1825 may be the discovery date of this section of the cave since it does not appear on the earliest map published (Bronn, 1826, based on a map of Foÿker/Schaffenrath ca. 1821). In 1832 the back part of Pisani rov was opened and named in honour of Erzherzog Johann. Several more inscriptions were placed on the column. Further down the passage a few more inscriptions exist. One was dated 1836 by J(ozef) Hauer, a paleontologist and the father of Franz Ritter von Hauer. Also Anton Perko, the younger brother of Ivan Andrej Perko left his name. I.A. Perko signed as well, but in the Rov brez imena, in the year 1892, a year before he, his brother and others founded the student caversʼ club “Hades” in Trieste. Search and documentation of historic inscriptions may therefore aid in reconstructing the exploration and visitation history of this most important show cave