The Transition to Post-industrial BMI Values Among US Children
John Komlos, Ariane Breitfelder, Marco Sunder
NBER Working Paper No. 13898,
No. 13898,
2008
Abstract
In our opinion, the trend in the BMI values of US children has not been estimated accurately. We use five models to estimate the BMI trends of non-Hispanic US-born black and white children and adolescents ages 2-19 born 1941-2006 on the basis of all NHES and NHANES data sets. We also use some historical BMI values for comparison. The increase in BMIZ values during the period considered was on average 1.3σ (95% CI: 1.16σ; 1.44σ) among black girls, 0.8σ for black boys, 0.7σ for white boys, and 0.6σ for white girls. This translates into an increase in BMI values of some 5.6, 3.3, 2.4, and 1.5 units respectively. While the increase in BMI values started among the birth cohorts of the 1940s among black females, the rate of increase tended to accelerate among all four groups born in the mid-1950s to early-1960s with the contemporaneous spread of TV viewing. The rate of increase levelled off somewhat thereafter. There is some indication that among black boys and white girls born after c. 1990 adiposity has remained unchanged or perhaps even declined. The affects of the IT revolution of the last two decades of the century is less evident. Some regional evidence leads to the speculation that the spread of automobiles and radios affected the BMI values of boys already in the interwar period. We infer that the incremental weight increases are associated with the labor-saving technological developments of the 20th century which brought about many faceted cultural and nutritional revolutions.
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Too old to change? The link between Age, Wage Differentials and Job Mobility
Lutz Schneider
Sozialer Fortschritt,
No. 56,
2007
Abstract
The reduced job mobility of older employees is well known. As a result, the ageing of the workforce has clear implications for labor turnover in Germany. On the basis of the IAB’s employee survey (Beschaeftigtenstichprobe) (IABS), this article analyses the impact of age on (inter-firm) job mobility. In particular, the study answers the following question: how do wage differentials between an actual and a potential job evolve during employees’ working lives? It is shown that changing jobs is less profitable for older workers than it is for younger ones. However, the analysis also demonstrates that the wage differential between jobs cannot explain the whole mobility advantage of younger employees.
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Industry Specialization, Diversity and the Efficiency of Regional Innovation Systems
Michael Fritsch, Viktor Slavtchev
Jena Economic Research Papers, Nr. 2007-018,
No. 18,
2007
Abstract
Innovation processes are characterized by a pronounced division of labor between actors. Two types of externality may arise from such interactions. On the one hand, a close location of actors affiliated to the same industry may stimulate innovation (MAR externalities). On the other hand, new ideas may be born by the exchange of heterogeneous and complementary knowledge between actors, which belong to different industries (Jacobs’ externalities). We test the impact of both MAR as well as Jacobs’ externalities on innovative performance at the regional level. The results suggest an inverted u-shaped relationship between regional specialization in certain industries and innovative performance. Further key determinants of the regional innovative performance are private sector R&D and university-industry collaboration.
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Flexible utilization of labor strengthens industrial enterprises´ ability to adapt to fluctuations in business - an empirical east-west comparison based on the IAB company panel
Brigitte Loose, Udo Ludwig
Wirtschaft im Wandel,
No. 12,
2004
Abstract
Based on an individual data set, this article investigates the question of which conventional methods and new instruments companies use to adapt to fluctuations in business and what distinguishes these companies from other ones which have not implemented such instruments. In particular, the role of the technical equipment as well as the personnel policy and tariff policy are analyzed. An empirical comparison between the East and West German manufacturing industries demonstrates whether East German firms have competitive advantages. While the technological conditions for firms´ flexibility are somewhat less pronounced in East German, the proportion of “standardized“ and flexible employment is nearly the same in the East-West comparison. Differences exist among small, middle-sized and large firms as well as among types of yield. The weak orientation with respect to agreed wages and hours worked as well as the mainly gratuitous reduction of unpaid overtime which can be implemented over the whole year, prove to be an advantage. The investigation is based on a data set from the IAB company panel of manufacturing industries in 2003.
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Business services in East Germany - an update
Siegfried Beer
Wirtschaft im Wandel,
No. 8,
2004
Abstract
The article presents the results of the German service sector statistic 2001 for company oriented services in the New Länder (without Berlin), which have been derived from data of the regional statistical offices. The article can be regarded as an update of an earlier version (see “Wirtschaft im Wandel”, 12/2003, p.342-349). Fundamental results are: 1. Compared to 2000, the New Länder’s proportion of Germany’s total revenue and employment in company oriented services has, compared to 2000, slightly increased, but remains rather small. 2. The profitability of East German companies has deteriorated, measured by total expenses per sales unit. Partially this might be due to the increased number of businesses. 3. Last evaluation’s assumption, that East German company’s labor productivity (gross value added per employees) is half of the West German’s, has been proofed in this actual evaluation. An illustration of reasons is not being provided since it has been discussed extensively in the first evaluation.
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IWH Industry Survey at the Start of 2004: Companies´ income situation recovered, sales plans without labor market effects
Bärbel Laschke
Wirtschaft im Wandel,
No. 3,
2004
Abstract
Die ostdeutschen Industrieunternehmen festigten 2003 trotz des allgemein schwachen konjunkturellen Umfeldes ihre Ertragslage. Mit Gewinn schlossen 57% der Unternehmen ab, ein Viertel wirtschaftete zumindest kostendeckend, und der Anteil der Verlustbetriebe verringerte sich geringfügig auf 18%.
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Technology spillovers through foreign direct investment. An empirical investigation on the example of Hungarian industry
Jutta Günther
Schriften des IWH,
No. 14,
2003
Abstract
With the beginning of transition in Central East European countries, foreign direct investment increased strongly whereby foreign subsidiaries transfer modern production technology and management know-how. However, it has remained an open question, how far domestic enterprises also benefit from these developments via technology spillovers. The study points out theoretically possible channels of technology spillovers and empirically investigates the significance, scope and influencing factors of the various spillovers channels on the example of Hungarian industry. The findings show that there are hardly any spillover effects in Hungarian industry so far. Major reasons for that are the strong technological disparities between foreign subsidiaries and domestic firms as well as the lack of labor mobility from foreign to domestic enterprises.
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Unit labor costs and competitiveness - a micro econometric analysis for East Germany
Harald Lehmann
IWH Discussion Papers,
No. 180,
2003
Abstract
The paper stresses the value of unit labour costs as an indicator of competitiveness. It is assumed that there are different advantages by using microeconomic data which additionally allow the use of panelregressive methods. The findings for East German enterprises in the manufacturing industry (1998 to 2000) are that unit labour cost are useful for explaining the profit rate. This indicates that East German firms are facing in-price competition which depends clearly of labour costs. But unit labour costs do not explain the success on supraregional markets which are marked by non-in-price competition.
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Direct investments in Central and Eastern European acceding countries: Repercussions for the German labor market?
Constanze Dey
Wirtschaft im Wandel,
No. 4,
2003
Abstract
In the light of the high unemployment in the Germany we ask whether German FDI to the CEEC is motivated mainly by cost differentials and takes the form of vertical investment which leads to an increased pressure on blue collar jobs in Germany. The analysis shows that German direct investment abroad is motivated both by reasons of market access and by cost differentials. About 60 % of all German FDI is directed toward the service sector. Here, no negative impact on the German labour market is to be expected. About 40 % of total German FDI may partly be motivated by cost advantages and lead to outsourcing. In the three most important CEEC recipient countries (Poland, Czech Republic and Hungary) about half of all FDI is directed toward the manufacturing industries (chemical industry and automobile industry in particular). This supports the hypothesis that vertical investment to these CEECs has been directed towards sectors that display cost advantages (i.e. low labour costs) which results in a decrease of the number of blue collar jobs and their respectives wages.
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Possible effects of demographic change - An overview
Gunter Steinmann, Olaf Fuchs, Sven Tagge
Wirtschaft im Wandel,
No. 15,
2002
Abstract
One of the more important influences shaping the future economic conditions of the highly industrialized countries is the decline and aging of their population. The article is a comprehensive survey of the impact of this development on key economic variables and the institutions of the welfare state. While the overall consequence of the aging process on productivity growth is more likely to be negative, there are also some offsetting forces like the increase in the capital intensity. The institutions of the welfare state, which are based on intergenerational transfers, will have to be reformed, in order to bring them in line with the demographic process. The prediction of a decrease in the rate of unemployment as a consequence of a declining labor force is according to our analysis not justified.
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