Against the odds. Education-to-job matches and less-educated workers’ pathways into success

The dissertation examines the labor market phenomena of over- and underqualification in a comparative research design using quantitative longitudinal data from West Germany and the United Kingdom. Three empirical chapters address three research questions: How does qualification mismatch (over- or underqualification) come about? That is, why are some but not others affected by it (micro-level), and which macro-societal conditions give rise to it? What are the consequences of over- and under-qualification for the affected workers? And finally: What is the relation between institutions of the labor market and the education and training system on the one hand, and qualification mismatch on the other? The dissertation aims to link the micro-level of individual careers with the macro-level of institutions and national patterns of educational expansion. Empirical analyses show that underqualification acts as path to relative occupational success, which is open especially to individuals with high cognitive skills and to those with a great openness to new experiences and internal loci of control. Furthermore, individuals from high-status backgrounds are particularly likely to become underqualified. Underqualification is thus an important factor in explaining intergenerational reproduction of income inequality. Using an innovative statistical approach, the second empirical chapter demonstrates that underqualification has measurable consequences for satisfaction, occupational identities, social integration, and wages of workers. Nevertheless, the results of the new method contradict established theories of status inconsistency as they rule out cognitive dissonance as the driving mechanism. In the third empirical chapter, historical analyses show that educational expansion has led to credential inflation in the United Kingdom, but not in Germany. This result has important implications for theories of educational expansion and challenges classical explanations of rising wage inequality. The final chapter summarizes the findings of the empirical studies and highlights the importance of qualification mismatches for individuals and for the study of social stratification, social change, and social mobility

Cutting the cord : mutual respect, organizational autonomy, and independence in organizational separation processes

Based on a longitudinal, qualitative analysis of developments in the English National Health Service, we develop a process model of how organizations divest or spin off units with the aim of establishing two or more autonomous organizational entities while simultaneously managing their continued interdependencies. We find that effective organizational separation depends on generating two types of respect—appraisal and recognition respect—between the divesting and divested units. Appraisal respect involves showing appreciation for competence or the effort to achieve it, while recognition respect requires considering what someone cares about—such as values or concerns—and acknowledging that they matter. The process model we develop shows that open communication is crucial to the development of both. We also find that certain attempts to gain organizational independence and respect may unintentionally undermine the development of autonomy. Counterintuitively, we find that increasing or maintaining interorganizational links via communication may facilitate organizational separation, while attempts by units to distance themselves from one another may unintentionally inhibit it. By linking organizational separation, autonomy, independence, and respect, this paper develops theory on organizational separation processes and more generally enhances our understanding of organizational autonomy and its relations with mutual respect

Multi-Gigabit Wireless data transfer at 60 GHz

In this paper we describe the status of the first prototype of the 60 GHz wireless Multi-gigabit data transfer topology currently under development at University of Heidelberg using IBM 130 nm SiGe HBT BiCMOS technology. The 60 GHz band is very suitable for high data rate and short distance applications as for example needed in the HEP experments. The wireless transceiver consist of a transmitter and a receiver. The transmitter includes an On-Off Keying (OOK) modulator, an Local Oscillator (LO), a Power Amplifier (PA) and a BandPass Filter (BPF). The receiver part is composed of a BandPass- Filter (BPF), a Low Noise Amplifier (LNA), a double balanced down-convert Gilbert mixer, a Local Oscillator (LO), then a BPF to remove the mixer introduced noise, an Intermediate Amplifier (IF), an On-Off Keying demodulator and a limiting amplifier. The first prototype would be able to handle a data-rate of about 3.5 Gbps over a link distance of 1 m. The first simulations of the LNA show that a Noise Figure (NF) of 5 dB, a power gain of 21 dB at 60 GHz with a 3 dB bandwidth of more than 20 GHz with a power consumption 11 mW are achieved. Simulations of the PA show an output referred compression point P1dB of 19.7 dB at 60 GHz.Comment: Proceedings of the WIT201

Analogical extension of vowel length in Vend Romani

Distinctive vowel length has been only recently re-introduced into the Romani varieties that have been in intimate contact with the various languages of Europe exhibiting vowel quantity. This article describes the process of analogical extension that accounts for certain intra-dialectal variation of vowel length found within the South Central Romani dialect group. The emergence of vowel length by means of this process is demonstrated by the example of the possessive pronouns and the remoteness suffix of Vend Romani, a variety spoken in Western Hungary. This analysis also discusses the phonological and semantic constraints of the examined instances of analogical change

Star-forming Cloud Complexes in the Central Molecular Zone of NGC 253

We report 350 and 230 GHz observations of molecular gas and dust in the starburst nucleus of NGC 253 at 20-40 pc (1"-2") resolution. The data contain CO(3-2), HCN(4-3), CO(2-1), 13CO(2-1), C18O(2-1), and continuum at 0.87 mm and 1.3 mm toward the central kiloparsec. The CO(2-1) size of the galaxy's central molecular zone (CMZ) is measured to be about 300 pc x 100 pc at the half maximum of intensity. Five clumps of dense and warm gas stand out in the CMZ at arcsecond resolution, and they are associated with compact radio sources due to recent massive star formation. They contribute one third of the CO emission in the central 300 pc and have 12CO peak brightness temperatures around 50 K, molecular gas column densities on the order of 10^{4} Msun pc^{-2}, gas masses on the order of 10^{7} Msun in the size scale of 20 pc, volume-averaged gas densities of n(H2) ~ 4000 cm^{-3}, and high HCN-to-CO ratios suggestive of higher fractions of dense gas than in the surrounding environment. It is suggested that these are natal molecular cloud complexes of massive star formation. The CMZ of NGC 253 is also compared with that of our Galaxy in CO(2-1) at the same 20 pc resolution. Their overall gas distributions are strikingly similar. The five molecular cloud complexes appear to be akin to such molecular complexes as Sgr A, Sgr B2, Sgr C, and the l=1.3deg cloud in the Galactic center. On the other hand, the starburst CMZ in NGC 253 has higher temperatures and higher surface (and presumably volume) densities than its non-starburst cousin.Comment: ApJ in press, 18 page

Immigrant Men's Economic Adaptation in Changing Labor Markets: Why Gaps between Turkish and German Men Expanded, 1976-2015

How important were manufacturing and heavy industries to the economic integration of twentieth-century immigrants in Western societies? This article examines how macro-social change in Germany since the height of manufacturing has affected the socio-economic integration of male immigrants. We develop an analytical framework to assess how educational expansion among natives, deindustrialization, and the increasing importance of formal qualifications shape male immigrant-native gaps in labor-market outcomes over time. Empirically, we focus on first-generation male Turkish immigrants in Germany and use micro-census data spanning almost 40 years. Through a novel empirical quantification of key theoretical arguments concerning immigrant economic integration, we find growing inter-group differences between the late 1970s and mid-2000s (employment) and mid-2010s (incomes), respectively. The growth of differences between the immigrant and native income distributions was most pronounced in their respective bottom halves. Our analysis shows that these trends are linked to the increased importance of formal educational qualifications for individual labor-market success, to educational expansion in Germany, and to deindustrialization. Employment in Germany shifted away from middling positions in manufacturing, but while natives tended to move into better-paying positions, Turkish immigrants mainly shifted into disadvantaged service jobs. These results provide novel evidence for claims that the economic assimilation of less-skilled immigrants may become structurally harder in increasingly post-industrial societies. We conclude that structural change in host countries is an important, yet often overlooked, driver of immigrant socio-economic integration trajectories

Effects of microplastic and microglass particles on soil microbial community structure in an arable soil (Chernozem)

Microplastic and microglass particles from different sources enter aquatic and terrestrial environments. The complexity of their environmental impact is difficult to capture, and the consequences for ecosystem components, for example, the soil microorganisms, are virtually unknown. To address this issue, we performed an incubation experiment by adding 1 % of five different types of impurities (<= 100 mu m) to an agriculturally used soil (Chernozem) and simulating a worst-case scenario of contamination The impurities were made of polypropylene (PP), low-density polyethylene (LDPE), polystyrene (PS), polyamide 12 (PA12) and microglass. After 80 d of incubation at 20 degrees C, we examined the soil microbial community structure by using phospholipid fatty acids (PLFAs) as markers for bacteria, fungi and protozoa. The results showed that soil microorganisms were not significantly affected by the presence of microplastic and microglass. However, PLFAs tend to increase with LDPE (28 %), PP (19 %) and microglass (11 %) in treated soil in comparison with untreated soil, whereas PLFAs in PA12 (32 %) and PS (11 %) in treated soil decreased. Interestingly, PLFAs revealed significant differences in PA12 (-89 %) and PS (-43 %) in comparison with LDPE. Furthermore, variability of bacterial PLFAs was much higher after microplastic incubation, while fungi seemed to be unaffected from different impurities after 80 d of incubation Similar results were shown for protozoa, which were also more or less unaffected by microplastic treatment as indicated by the minor reduction in PLFA contents compared to the control group. In contrast, microglass seems to have an inhibiting effect on protozoa because PLFAs were under the limit of determination. Our study indicated that high amounts of different microplastics may have contrary effects on soil microbiology. Microglass might have a toxic effect for protozoa