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Displaying results 51 to 54 of 54.

  1. Pollution and resource extraction
    do they matter for the dynamics of growth?
    Author: Oikonomidēs, Geōrgios; Philippopulos, Apostolēs
    Published: 2000
    Publisher:  CESifo, München

    This paper shows that whether pollution occurs as a by-product of economic activity (which is supposed to be the case in DCs), or as resource extraction (which is supposed to be the case in LDCs), matters for the dynamics of the optimal... more

    Location:
    Staats- und Universitätsbibliothek Bremen
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    Location:
    Niedersächsische Staats- und Universitätsbibliothek Göttingen
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    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    DS 63 (361)
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    Location:
    Universitätsbibliothek Osnabrück
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    This paper shows that whether pollution occurs as a by-product of economic activity (which is supposed to be the case in DCs), or as resource extraction (which is supposed to be the case in LDCs), matters for the dynamics of the optimal growth-environment-policy link. The context is a dynamic general equilibrium model of endogenous growth, in which private agents treat natural resources as a public good and the government chooses second-best environmental policy. We show that resource extraction can lead to indeterminacy, i.e. many different equilibrium transition paths. This can partly explain the observed persistent differences in growth among LDCs with similar fundamentals and endowments.

     
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    Volltext (kostenfrei)
    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    hdl: 10419/75595
    Series: CESifo Working Paper ; 361
    Subjects: pollution and resource extraction; growth; dynamics; second-best policy
    Scope: Online-Ressource (30 S.)
  2. Dynamic models of R&D, innovation and productivity
    panel data evidence for Dutch and French manufacturing
    Published: 2013
    Publisher:  CESifo, München

    This paper introduces dynamics in the R&D to innovation and innovation to productivity relationships, which have mostly been estimated on cross-sectional data. It considers four nonlinear dynamic simultaneous equations models that include individual... more

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    Staats- und Universitätsbibliothek Bremen
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    Niedersächsische Staats- und Universitätsbibliothek Göttingen
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    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
    Signature:
    DS 63 (4290)
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    This paper introduces dynamics in the R&D to innovation and innovation to productivity relationships, which have mostly been estimated on cross-sectional data. It considers four nonlinear dynamic simultaneous equations models that include individual effects and idiosyncratic errors correlated across equations and that differ in the way innovation enters the conditional mean of labor productivity: through an observed binary indicator, an observed intensity variable or through the continuous latent variables that correspond to the observed occurrence or intensity. It estimates these models by full information maximum likelihood using two unbalanced panels of Dutch and French manufacturing firms from three waves of the Community Innovation Survey. The results provide evidence of robust unidirectional causality from innovation to productivity and of stronger persistence in productivity than in innovation.

     
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    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    hdl: 10419/77668
    RVK Categories: QB 910
    Series: Array ; 4290
    Subjects: Industrieforschung; Innovation; Arbeitsproduktivität; Nichtlineare Dynamik; Panel; Niederlande; Frankreich; R&D; innovation; productivity; panel data; dynamics; simultaneous equations
    Scope: Online-Ressource (33 S.)
  3. The impact of R&D cooperations on drug variety offered on the market
    evidence from the pharmaceutical industry
    Author: Banerjee, Tannista; Siebert, Ralph
    Published: 2014
    Publisher:  CESifo, München

    Our study puts special attention to the fact that R&D cooperations in the pharmaceutical industry are formed at different stages throughout the drug development process. We study if the timing to engage in R&D cooperations in the pharmaceutical... more

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    Universitätsbibliothek Braunschweig
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    Staats- und Universitätsbibliothek Bremen
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    Niedersächsische Staats- und Universitätsbibliothek Göttingen
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    Location:
    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
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    DS 63 (4567)
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    Our study puts special attention to the fact that R&D cooperations in the pharmaceutical industry are formed at different stages throughout the drug development process. We study if the timing to engage in R&D cooperations in the pharmaceutical industry has different impacts on the technology and product markets. Using a comprehensive dataset on the pharmaceutical industry, and estimating a heterogeneous treatment effects model (Heckman et al., 2006) our results show that R&D cooperations formed at the early stages increase the number of R&D projects and the number of drugs launched on the product market. Most interestingly, late stage R&D cooperations significantly reduce the number of drugs launched on the market, even though they increased firms' activity in the technology markets. This result highlights the fact that firms re-optimize their drug development portfolio to avoid wasteful duplication and cannibalizing the sales of the jointly developed drug in R&D cooperations. Our study show that firms cooperating in late stage collaborations re-optimize their individual drug development portfolios, which significantly reduces the number of drugs offered on the market.

     
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    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    hdl: 10419/89747
    Series: Array ; 4567
    Subjects: drug development; dynamics; co-development; pharmaceutical industry; product variety; product market competition; Research and Development cooperation
    Scope: Online-Ressource (44 S.)
  4. Dynamics of military conflict
    an economics perspective
    Author: Beckmann, Klaus; Reimer, Lennart
    Published: 2014
    Publisher:  Helmut-Schmidt-Univ., Hamburg

    Using examples for each type of model, we consider dynamic games, differential games, and simulation as alternative ways of extending the standard static economic model of conflict to study patterns of conflict dynamics. It turns out that... more

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    Niedersächsische Staats- und Universitätsbibliothek Göttingen
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    Helmut-Schmidt-Universität, Universität der Bundeswehr Hamburg, Universitätsbibliothek
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    ZBW - Leibniz-Informationszentrum Wirtschaft, Standort Kiel
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    DS 2 (138)
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    Using examples for each type of model, we consider dynamic games, differential games, and simulation as alternative ways of extending the standard static economic model of conflict to study patterns of conflict dynamics. It turns out that computational requirements and theoretical difficulties impose tight limits on what can be achieved using the first two approaches. In particular, we are unable to study dynamic military conflict as a series of “battles” that are resolved individually. A simulation study based on a new model of adaptive, boundedly rational decision making, however, is shown not to be subject to this limitation. Plausible patterns of conflict dynamics emerge, which we can link to both historical conflict and standard tenets of military theory.

     
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    Source: Union catalogues
    Language: English
    Media type: Book
    Format: Online
    Other identifier:
    hdl: 10419/98417
    Series: Diskussionspapier / Helmut-Schmidt-Universität, Fächergruppe Volkswirtschaftslehre ; 138
    Subjects: Conflict; dynamics; contest success functions; differential games; dynamic games; simulation; emergence of war
    Scope: Online-Ressource (20 S.), graph. Darst.