In this thesis we investigate the scarcely analyzed relationship between entrepreneurial activity in the form of company start-ups in Sweden and age demographics. Using a panel data set with data from all 21 Swedish regions from 1989 to 2019, we test what impact different age groups have on the number of start-ups in Sweden. We do this both for the total number of companies founded and the number of ventures in the tech industry. We test our hypotheses with a quantitative approach, performing a regression with a fixed effects model. The results of our research can show several things. For example, we found that there indeed is a significant impact of age structure on the number of (tech) company start-ups. We can see an M-shaped relationship between age and general entrepreneurship, meaning that while young adults and people closer to the retirement age affect the total number of companies founded positively, very young, middle aged and very old people affect it in a negative way. For the Swedish tech industry, we could show that founders here tend to be younger than overall, which is why we can observe a gradual negative relationship between age and entrepreneurship there

Die Arbeit untersucht, wie sich der demografische Wandel auf die öffentlichen Haushalte der deutschen Kommunen auswirkt. Zunächst werden die kommunalen Ausgaben und Einnahmen in sieben Altersgruppen der Bevölkerung aufgespaltet und unter Berücksichtigung verschiedener Ausgaben- und Einnahmekategorien auf ihre Alterssensitivität untersucht. Der verwendete Datensatz der 440 kreisfreien Städte und Landkreise unterscheidet sowohl nach Ausgaben- und Einnahmenseite der Budgets als auch nach Verwaltungs- und Vermögenshaushalten. Die ermittelten Altersstrukturprofile belegen die Jugendlastigkeit der Kommunalhaushalte. Danach werden die Befunde des Basisjahres 2005 in sechs verschiedenen Szenarien über einen Analysezeitraum von 20 Jahren projiziert, um die fiskalischen Effekte zu quantifizieren. Die rein demografischen Entwicklungen führen künftig zu Einnahmerückgängen, aber gleichzeitig zu größeren Potenzialen, um die Ausgaben zu senken. Verschiedene Trends und finanzpolitische Festlegungen reduzieren jedoch diese Effekte. Abschließend werden Anpassungsstrategien für die Kommunen diskutiert. / Demographic change will certainly have influence on the budgets of the German municipalities. Due to the division of public sector functions among different tiers in Germany’s federalism the municipalities serve mainly young generations with their public goods. Keeping this in mind, demographic trends will cause considerable effects on the communities’ budgets, especially in the Eastern part of Germany. Projecting the 440 German communes’ financial status of the basic year 2005 onto the year 2025, changing size and age structure of the German population will lower revenues as well as raise potentials to reduce expenditures even stronger. To take account of some special demographic trends and several fiscal regulations besides nothing but demographic ageing potential consolidation gains on the municipalities’ expenditures will be shrinking. Designing six different szenarios fiscal effects will be quantified. Finally, several strategies to deal with the fiscal consequences of demographic change will be discussed.

The resurgence of Texas' snook (Family Centropomidae) recreational fishery is coupled with an uncertainty as to what species occur in State waters, a limited understanding of life history, and habitat needs of its constituents. This study described species composition and early life history aspects of juvenile (< 100 mm SL) centropomids taken in bag seine collections in estuarine and freshwater habitats along the upper, middle, and lower coast of Texas during 2006 to 2010. Centropomus specimens (n = 548) captured from 41 locations across the Texas coast as well as congeners from Mexico (n = 24), Florida (n = 7), and Costa Rica (n = 3) were used in a genetics- and meristic-based determination of species composition, growth rates, range of hatching dates, geographic distribution, and habitat association. Genetic analyses of the mitochondrial DNA 16s ribosomal RNA gene and the mitochondrial control region (D - loop) validated the presence of smallscale fat snook (C. parallelus Poey, 1860, n = 333), common snook (C. undecimalis Bloch 1792, n = 212) and Mexican snook (C. poeyi Chavez, 1961, n = 3) in Texas, with the last of these validations representing the first known record of this species in Texas. AMOVA of 16s and D - loop sequences failed to detect genetic differentiation within Texas for C. parallelus and C. undecimalis. However, AMOVA for 16s and D - loop C. undecimalis sequences did yield significant genetic differences between Texas and Mexico against those from Florida and Costa Rica. Juvenile centropomids (< 100 mm SL) in Texas occupied backwater habitats with dissipated currents similar to those of Florida congeners (tidal sloughs, freshwater habitats, and structured shorelines). Coastal ranges of these species differed with C. parallelus taken from the Rio Grande to West Galveston Bay, whereas C. undecimalis was captured from the Rio Grande northward near Palacios. Three C. poeyi were captured at only two locations (Laguna Vista and Port Aransas). Daily growth rates varied between species and capture years, with these ranging from 0.22 to 0.97 mm d^-1. Analyses of hatch-date distribution suggest centropomids in Texas begin spawning in August and continue it through late September into mid-November.

Population models are very often used and considered useful in the policy-making process and for planning purposes. In this research I have tried to illuminate the problem of analysing population evolution in space by using three models which cover a wide spectrum of complementary methodologies: a The Hotell.ing-Puu model b A multiregional demographic model c A synergetic model Hotelling's work and Puu's later generalization have produced theoretical continuous models treating population growth and dispersal in a combined logistic growth and diffusion equation. The multiregional model is a discrete model based on the Markovian assumption which simulates the population evolution disaggregated by age and region. It is further assumed that this population is governed by a given pattern of growth and interregional mobility. The synergetic model is also a discrete model based on the Markovian assumption incorporating a probabilistic framework with causal structure. The quantitative description of the population dynamics is treated in terms of trend parameters, which are correlated in turn with demo-economic factors. / <p>Diss. Umeå : Umeå universitet, 1988</p> / Digitalisering@umu

The aim of this diploma thesis is to evaluate the age and aging of the European population. At present, the aging process is affecting most countries in the Word. It occurs mainly in advanced countries, which includes most of the European countries. Population aging is linked to the process of the second demographic transition, which results in a change of the shares of the child´s and the old population. The main objective is to evaluate the age of individual regions (states) of Europe, according to various indicators, and thereafter to identify sub-regions in Europe according to the age of the population based on multidimensional statistical methods (point method, standardized variable method, factor and cluster analysis).

Communities of epigeic beetles were studied on five forest habitats with the different age structure in the Novohradské foothills area (Český Krumlov district, South Bohemia, Czech Republic). All studied habitats were found in three managed forests. The method of pitfall trapping was used for beetle sampling. There were 2735 specimens trapped. 25 beetles species were divided into two groups by its ecological preferences to the degree of human impact. Index of antropogenic influence had better values in two oldest studied habitats. Species diversity was higher in the oldest habitats too. The results indicate less human impact in mature managed forests than clearings and young managed forest stands.

[pt] Neste estudo iremos empiricamente avaliar o impacto do envelhecimento da população na eficácia da política monetária. Primeiramente, estimaremos o impacto da política monetária sobre o hiato do produto e inflação, evidenciando um enfraquecimento geral da transmissão da política monetária ao longo do tempo. Em outras palavras, hiato do produto e inflação menos sensíveis às mudanças nas taxas de juros. Depois, utilizaremos o método de OLS para testar o efeito negativo e estatisticamente significativo das alterações demográficas na eficácia da política monetária. / [en] In this study we will empirically evaluate the impact of population aging on the effectiveness of monetary policy. First, we will estimate the impact of monetary policy on the output gap and inflation, evidencing a general weakening of monetary policy transmission over time. In other words, output gap and inflation are less sensitive to changes in interest rates. Then we will use the OLS method to test the negative and statistically significant effect of demographic changes on the effectiveness of monetary policy.

Pension insurance and demographic development in the Czech Republic Abstract The aim of this thesis is to describe the development of the pension insurance in the Czech Republic and changes in retirement age in relation to the development of life expectancy and changes in the age structure of the population of the Czech Republic. In the first part of the work, there demographic changes of the population are described and in particular, changes in the age structure of the population of the Czech Republic. The second part provides an overview of the historical development of pension insurance in the territory of today's Czech Republic, in particular the development of the most important laws, but also statistical data as well as basic concepts and characteristics of the current pension scheme. In the third part of this thesis are analyzed the changes in the age structure of the population and their relation to raising retirement age in the pension scheme of Czech Republic. Keywords: pension insurance, retirement age, the age structure of the population, life expectancy.

The final thesis deals with social situations juniors and seniors in selected countries of the European Union. The thesis monitors changes in social developments primarily in terms of income, education, and especially of unemployment. The selected period is the period from approximately 2005 to 2011, in some cases up to 2013. The aim of this thesis is the statistical analysis of the data set EU-SILC for 2005 and 2010 of Czech Republic, Slovakia, Poland, Germany, France and Spain with focusing on income, education and unemployment among age groups.

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