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  • 2005-2009  (40)
  • 1
    Publication Date: 2018-06-26
    Keywords: ddc:330
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:report
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK; Malden, USA : Blackwell Science Inc
    Ground water 43 (2005), S. 0 
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: A tracer test in a carbonate aquifer is analyzed using the method of moments and two analytical advection-dispersion models (ADMs) as well as a numerical model. The numerical model is a coupled continuum-pipe flow and transport model that accounts for two different flow components in karstified carbonate aquifers, i.e., rapid and often turbulent conduit flow and Darcian flow in the fissured porous rock. All techniques employed provide reasonable fits to the tracer breakthrough curve (TBC) measured at a spring. The resulting parameter estimates are compared to investigate how each conceptual model of flow and transport processes that forms the basis of the analyses affects the interpretation of the tracer test. Numerical modeling results suggest that the method of moments and the analytical ADMs tend to overestimate the conduit volume because part of the water discharged at the spring is wrongly attributed to the conduit system if flow in the fissured porous rock is ignored. In addition, numerical modeling suggests that mixing of the two flow components accounts for part of the dispersion apparent in the measured TBC, while the remaining part can be attributed to Taylor dispersion. These processes, however, cannot reasonably explain the tail of the TBC. Instead, retention in immobile-fluid regions as included in a nonequilibrium ADM provides a possible explanation.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Immunoglobulin variable region exons are assembled in developing B cells by V(D)J recombination. Once mature, these cells undergo class-switch recombination (CSR) when activated by antigen. CSR changes the heavy chain constant region exons (Ch) expressed with a given variable region ...
    Type of Medium: Electronic Resource
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  • 4
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    Münster: Inst. für Ökonomische Bildung
    Publication Date: 2013-05-22
    Description: The paper theoretically analyses the effect of the introduction of the three-point-rule on the strategies in a soccer match. Therefore the expectation values for the goal difference at the end of the game under different strategies both for matches between equally strong teams and (more realistically) for matches between teams with varying quality levels are simulated. It can be shown that the rule change in tied games between equally strong teams leads to a more offensive manner of play, while in matches between teams with varying quality levels the weaker team plays in any case more offensive, while the stronger team only plays more offensive if the gap between the quality of the teams is not too big. If one team leads in matches with homogenous teams the leading team now changes later from an offensive manner of play to a defensive manner. In matches with heterogeneous teams with the better team in lead this team changes its manner of play earlier from offense to defence and if the weaker team leads it changes its strategy earlier.
    Keywords: C72 ; L83 ; ddc:330 ; Fußballsport ; Strategie ; Betriebswirtschaftliches Ziel ; Spieltheorie ; Theorie ; Deutschland
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: German
    Type: doc-type:workingPaper
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  • 5
    Publication Date: 2013-05-22
    Description: The effects of the three-point rule in first league German soccer are tested empirically and compared to games from the German cup-competition. The inclusion of cup games ensures that changes in league games can be attributed to the three-point rule. As a result of their relative devaluation, the number of draws should decrease. Furthermore, an increase in the number of close wins is expected. The strategy of a leading team becomes more defensive, resulting in fewer goal shootings by that team, as well as fewer shooting opportunities for the opponent. Empirical evidence supporting these effects is found.
    Keywords: C72 ; C93 ; L83 ; ddc:330 ; Fußballsport ; Nichtkooperatives Spiel ; Regulierung ; Bewertung ; Theorie ; Deutschland
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
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  • 6
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    Münster: Inst. für Ökonomische Bildung
    Publication Date: 2013-05-22
    Description: Die Auswechslung von Spielern stellt neben der Halbzeitpause die einzige Möglichkeit für einen Fußballtrainer dar, während des Spiels Einfluss auf Strategie und Taktik seines Teams zu nehmen. Da die Anzahl der möglichen Wechsel beschränkt ist, kommt diesen Auswechslungen eine große Bedeutung zu. Der Beitrag stellt daher Gründe für die Auswechslung von Spielern im Fußball dar und zeigt anhand von Daten der 1. Fußball-Bundesliga, dass unter anderem der aktuelle Spielstand Auswirkungen auf Zeitpunkt und Art der Auswechslung hat. Zusätzlich zeigen die Daten, dass häufiger Spieler ausgewechselt werden, die bereits eine gelbe Karte erhalten haben und damit gelb-rot gefährdet sind, als solche Spieler, die noch nicht verwarnt wurden.
    Description: Besides half time talk player substitutions are the only possibility for a coach to exert influence on strategy and tactic of his team. Since the number of possible player substitutions is limited these substitutions are of utmost importance. This article therefore displays reasons for player substitutions and shows by means of data from the first German soccer league that amongst others the current score has an effect on time and kind of the substitutions. In addition the data demonstrate that players which were booked are replaced more often than players that were not booked
    Keywords: ddc:330 ; Fußballsport ; Personaleinsatzplanung ; Professioneller Sport ; Deutschland
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: German
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  • 7
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    Berlin: Deutsches Institut für Wirtschaftsforschung (DIW)
    Publication Date: 2017-02-22
    Description: Die Bundesregierung hat mit der Rentenreform 2001 die staatliche Förderung der freiwilligen zusätzlichen kapitalgedeckten Altersvorsorge eingeführt. Dabei werden über die Riester-Rente zertifizierte private Altersvorsorgeprodukte durch Zulagen und Steuerersparnisse gefördert. Dadurch sollen finanzielle Anreize für die Versicherten der gesetzlichen Rentenversicherung und für Beamte gesetzt werden, die langfristige Niveauabsenkung der gesetzlichen Rente durch den Aufbau einer privaten Rente auszugleichen. Insbesondere sollen auch Geringverdiener, Frauen, Förderberechtigte in den neuen Ländern und Familien beim Aufbau einer zusätzlichen Altersvorsorge finanziell unterstützt werden. Eine Analyse der Inanspruchnahme der Riester-Rente auf Basis von Daten aus dem Sozio-oekonomischen Panel im Zeitraum von 2004 bis 2007 zeigt, dass diese vor allem in Ostdeutschland stark zugenommen hat und die Riester- Förderung zunehmend von Frauen in Anspruch genommen wird. Am häufigsten verfügen 24- bis 44-Jährige über diese Form der Alterssicherung. Das Ziel insbesondere Geringverdiener beim Aufbau einer zusätzlichen Altersvorsorge finanziell zu unterstützen, scheint nach den Ergebnissen der vorliegenden Studie bisher allerdings nur sehr eingeschränkt erreicht worden zu sein.
    Keywords: D12 ; H24 ; H30 ; I38 ; ddc:330 ; Private pension provision ; Riester scheme ; tax incentives ; Private Altersvorsorge ; Steuervergünstigung ; Sparförderung ; Anreiz ; Niedrigeinkommen ; Deutschland
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: German
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  • 8
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    Berlin: Deutsches Institut für Wirtschaftsforschung (DIW)
    Publication Date: 2017-02-22
    Keywords: ddc:330 ; Private Altersvorsorge ; Steuervergünstigung ; Sparförderung ; Anreiz ; Ostdeutschland ; Westdeutsche Bundesländer
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: German
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  • 9
    Publication Date: 2016-06-22
    Description: The employment behavior of mothers is strongly influenced by labor market regulations and certain institutional arrangements, which both vary greatly across European countries. Using the European Community Household Panel (ECHP) 1994-2001 for Denmark, Germany, Italy and the United Kingdom, which represent four distinct ?institutional regimes?, we estimate the short-run and long-term effects of childbirth on married women?s employment and working hours. Estimation results show that these effects vary across the four countries in accordance with prevailing institutional regulations.
    Keywords: D12 ; J13 ; J22 ; ddc:330 ; employment and working hours ; labor supply ; childbirth ; European Community Household Panel ; panel data models ; Frauenerwerbstätigkeit ; Mütter ; Arbeitsangebot ; Familienpolitik ; Mutterschutz ; Vergleich ; Dänemark ; Deutschland ; Italien ; Großbritannien
    Repository Name: EconStor: OA server of the German National Library of Economics - Leibniz Information Centre for Economics
    Language: English
    Type: doc-type:workingPaper
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  • 10
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