The GVAR Handbook: Structure and Applications of a Macro Model of the Global Economy for Policy Analysis
Filippo di Mauro, M. Hashem Pesaran
Oxford University Press,
2013
Abstract
The recent crisis has shown yet again how the world economies are globally interlinked, via a complex net of transmission channels. When it comes, however, to build econometric frameworks aimed at analysing such linkages, modellers are faced with what is called the "curse of dimensionality": there far too many parameters to be estimated with respect to the available observations. The GVAR, a VAR based model of the global economy, offers a solution to this problem. The basic model is composed of a large number of country specific models, comprising domestic, foreign and purely global variables. The foreign variables, however, are treated as weakly exogenous. This assumption, which is typically held when empirically tested for virtually all economies - with the notable exception of the US which is treated differently - allows to estimate first the individual country models separately. Only in a second stage country-specific models are simultaneously solved, thus allowing global interactions.This volume presents - for a first time in a compact and rather easy to read format - principles and structure of the basic GVAR model and a number of its many applications and extensions developed in the last few years by a growing literature. Its main objective is to show how powerful the model can be as a tool for forecasting and scenario analysis. The clear modelling structure of the GVAR appeals to policy makers and practitioners as shown by its growing use among major institutions, as well as by econometricians, as shown by the main extensions and applications.
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Contracting with Heterogeneous Externalities
Shai B. Bernstein, Eyal Winter
American Economic Journal: Microeconomics,
Nr. 2,
2012
Abstract
We model situations in which a principal offers contracts to a group of agents to participate in a project. Agents' benefits from participation depend on the identity of other participating agents. We assume heterogeneous externalities and characterize the optimal contracting scheme. We show that the optimal contracts' payoff relies on a ranking, which arise from a tournament among the agents. The optimal ranking cannot be achieved by a simple measure of popularity. Using the structure of the optimal contracts, we derive results on the principal's revenue extraction and the role of the level of externalities' asymmetry.
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The Impact of Firm and Industry Characteristics on Small Firms’ Capital Structure
Hans Degryse, Peter de Goeij, Peter Kappert
Small Business Economics,
Nr. 4,
2012
Abstract
We study the impact of firm and industry characteristics on small firms’ capital structure, employing a proprietary database containing financial statements of Dutch small and medium-sized enterprises (SMEs) from 2003 to 2005. The firm characteristics suggest that the capital structure decision is consistent with the pecking-order theory: Dutch SMEs use profits to reduce their debt level, and growing firms increase their debt position since they need more funds. We further document that profits reduce in particular short-term debt, whereas growth increases long-term debt. We also find that inter- and intra-industry effects are important in explaining small firms’ capital structure. Industries exhibit different average debt levels, which is in line with the trade-off theory. Furthermore, there is substantial intra-industry heterogeneity, showing that the degree of industry competition, the degree of agency conflicts, and the heterogeneity in employed technology are also important drivers of capital structure.
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The Internationalization of Science and Its Influence on Academic Entrepreneurship
S. Krabel, D. S. Siegel, Viktor Slavtchev
Journal of Technology Transfer,
Nr. 2,
2012
Abstract
We examine whether scientists employed in foreign countries and foreign-educated native researchers are more “entrepreneurial” than their “domestic” counterparts. We conjecture that foreign-born and foreign-educated scientists possess broader scientific skills and social capital, which increases their likelihood that they will start their own companies. To test this hypothesis we analyze comprehensive data from researchers at the Max Planck Society in Germany. Our findings provide strong support for the conjecture that academic entrepreneurship can be stimulated by facilitating the mobility of scientists across countries.
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Introducing Financial Frictions and Unemployment into a Small Open Economy Model
Mathias Trabandt, Lawrence J. Christiano, Karl Walentin
Journal of Economic Dynamics & Control,
Nr. 12,
2011
Abstract
Which are the main frictions and the driving forces of business cycle dynamics in an open economy? To answer this question we extend the standard new Keynesian model in three dimensions: we incorporate financing frictions for capital, employment frictions for labor and extend the model into a small open economy setting. We estimate the model on Swedish data. Our main results are that (i) a financial shock is pivotal for explaining fluctuations in investment and GDP. (ii) The marginal efficiency of investment shock has negligible importance. (iii) The labor supply shock is unimportant in explaining GDP and no high frequency wage markup shock is needed.
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Clusterpolitiken in Bayern und Thüringen: Förderpraxis nimmt wenig Rücksicht auf theoretische Vorbehalte
Gerhard Heimpold
Wirtschaft im Wandel,
Nr. 10,
2011
Abstract
Der Beitrag analysiert anhand veröffentlichter Dokumente die Clusterpolitiken in den Ländern Bayern und Thüringen. Ziel dieser Politiken ist die Stärkung der Innovationskraft. Eine explizite allokationspolitische Begründung
für Clusterpolitik mit dem Vorliegen von Externalitäten, Informationsasymmetrien oder Koordinierungsmängeln ist in den Dokumenten nicht sichtbar. Es bleibt daher offen, ob die praktizierte Clusterpolitik tatsächlich ursachenadäquat
ist. Beide Länder fokussieren auf die Unterstützung landesweiter Cluster und Netzwerke. Dadurch könnten aber die Vorteile räumlicher Nähe zu wenig Beachtung finden. Nicht ohne Probleme ist auch die ex ante vorgenommene Auswahl von Branchen und Technologiefeldern in den Clusterpolitiken beider Länder, selbst wenn aus den Eigendarstellungen der fördernden Ressorts Offenheit für Neues ablesbar ist. Denn dem Staat mangelt es generell an Informationen über die Zukunftsfähigkeit von Branchen und Technologien. Der Verzicht auf einen
Branchenfokus zugunsten wettbewerblicher Förderverfahren nach dem Vorbild von Bundesprogrammen kann dieses Problem mildern. Für Thüringen, das seine Clusterpolitik vor allem mit der Kleinteiligkeit der Unternehmensstruktur
motiviert, wird es jenseits clusterpolitischer Bemühungen darauf ankommen, weiterhin auch direkt die Beseitigung dieser strukturellen Nachteile anzuvisieren, insbesondere durch Rahmenbedingungen, die dem Wachstum der vorhandenen Unternehmen förderlich sind.
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27.10.2011 • 44/2011
Clusterpolitiken in Bayern und Thüringen: Praxis eilt der Theorie voraus
In einer Vergleichsstudie hat das Institut für Wirtschaftsforschung Halle (IWH) anhand veröffentlichter Dokumente die Clusterpolitiken in den Ländern Bayern und Thüringen analysiert. Ziel dieser Politiken ist die Stärkung der Innovationskraft. Es fehlt jedoch eine explizite Begründung für die staatliche Unterstützung von Clustern im Sinne von Marktversagen, die darlegt, weshalb der Markt allein (aufgrund von externen Effekten, Informationsasymmetrien oder Koordinierungsmängeln) ein Zuwenig an Clusterbildung erzeugt. Offen bleibt daher, ob die praktizierte Clusterpolitik tatsächlich ursachenadäquat ist. In Thüringen wird Clusterpolitik mit der Kleinteiligkeit der Unternehmensstrukturen motiviert, was eher indirekt auf Informations- und Koordinierungsprobleme schließen lässt.
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Related Variety, Unrelated Variety and Regional Functions: Identifying Sources of Regional Employment Growth in Germany from 2003 to 2008
Matthias Brachert, Alexander Kubis, Mirko Titze
Abstract
This article analyses how regional employment growth in Germany is affected by related variety, unrelated variety and the functions a region performs in the production process. Following the related variety literature, we argue that regions benefit from the existence of related activities that facilitate economic development. However, we argue that the sole reliance of related variety on standard industrial classifications remains debatable. Hence, we offer estimations for establishing that conceptual progress can indeed be made when a focus for analysis goes beyond solely considering industries. We develop an industry-function based approach of related and unrelated variety. Our findings suggest that related variety only in combination with a high functional specialization of the region facilitates regional growth in Germany. Additionally, also unrelated variety per se fails to wield influences affecting development of regions. It is rather unrelated, but functionally proximate variety in the groups “White Collar” and “Blue Collar Workers” positively affects regional employment growth.
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Path Dependence and QWERTY's Lock-in: Toward a Veblenian Interpretation
John B. Hall, Iciar Dominguez Lacasa, Jutta Günther
Journal of Economic Issues,
Nr. 2,
2011
Abstract
In “Clio and the Economics of QWERTY,“ Paul David challenges an overarching, mainstream assumption that market forces should indeed lead toward efficient and optimal outcomes that include technology selection. David seeks to explain the endurance of technologies that his use of historiography judges inefficient and suboptimal. We challenge David's research, arguing that failure to consider the original institutional economics (OIE) tradition limits his grasp of complex processes to reduced notions of “path dependence“ based upon a “lock-in.“ This inquiry offers an alternative account of QWERTY and technology selection based upon Veblenian thinking, further supported by Paul Dale Bush's emphasis upon the ceremonial.
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On the Look-out for a White Knight: Options-based Calculation of Probability and Expected Value of Increased Bids in Hostile Takeover Battles
Stefan Eichler, Dominik Maltritz
Applied Economics Letters,
Nr. 11,
2010
Abstract
Takeover bids provide an option right to the target's shareholders; they guarantee the offered price but maintain the chance of higher offers. Using Option Pricing Theory (OPT) we estimate the probability and expected value of higher bids from target stock prices.
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