Reichtum in Niedersachsen und anderen Bundesländern - Ergebnisse aus der Einkommensteuer-Geschäftsstatistik 2003 für Selbständige (Freie Berufe und Unternehmer) und abhängige Beschäftigte
This contribution analyzes top incomes in the German Federal States for 2003 with focus on Lower-Saxony. Based on the microdata of the German Wage and Income Tax Current Statistics (Einkommensteuer-Geschaftsstatistik) for the first time richness rates and intensities of richness are examined for the self-employed as professions and entrepreneurs as well as for employees. We found large differences between the German Federal States and occupational groups. Even if the share of rich persons in the group of self-employed are substantially higher than in the group of employees the situation of the self-employed varies much between the German Federal States.
Einkommens- und Verteilungsanalyse mit dem Taxpayer-Panel – Neue Möglichkeiten und erste Ergebnisse für Selbständige als Freiberufler und Unternehmer und abhängige Beschäftigte sowie für hohe Einkommen
This contribution analyzes the personal income distribution with the actual microdata of the German Income Tax Statistics and focus on top incomes for important labour market groups: the self-employed (as freelancers and entrepreneurs) and employees. New are the first longitudinal results based on the just available three waves 2001, 2002 and 2003 of the Taxpayer-Panel, a panel, which for the first time in Germany follows the individual taxpayers’ situations. With these paneldata we are able to show first impressions about the income mobility of high incomes in particular and to give hints about the research potential with this may be worldwide genuine individual panel tax data. Central result: The incomes of the self-employed strongly fluctuate for entrepreneurs (tradesmen) but not for liberal professions (freelancer). Freelancer will be rich more frequently and are more frequently rich than the other self-employed. Only relatively few employees were getting rich from 2001 to 2003. In addition, employees (with entrepreneurs) most frequently decline from being rich. This study is a contribution for the “Festschrift” according to the 65th birthday of Johann Hahlen and the 75th birthday of Hans-Jurgen Krupp (Rolf, Gabriele, Zwick, Markus und Gert G. Wagner (Hrsg.), Fortschritte der informationellen Infrasruktur in Deutschland, will be published by Nomos publisher).
Sustainable production of toxin free marine microalgae biomass as fish feed in large scale open system in the Qatari desert.
Mass cultivation of microalgae biomass for feed should be cost effective and toxin free. Evaporation loss in Qatar can be as high as 2 cm/d. Hence, production of marine microalgae biomass in Qatar would also require mitigating water loss as there was only very limited groundwater reserve. To address these issues, a combination of four growth conditions were applied to a 25,000 L raceway pond: locally isolated microalgae strain was selected which could grow in elevated salinity; strain that did not require silica and vitamins; volume of the culture would increase over time keeping denser inoculum in the beginning, and evaporation water loss would be balanced by adding seawater only. A local saline tolerant Nannochloropsis sp. was selected which did not require silica and vitamins. When the above conditions were combined in the pond, average areal biomass productivities reached 20.37 g/m(2)/d, and the culture was not contaminated by any toxic microalgae.