Das makroökonometrische Modell des IWH: Eine angebotsseitige Betrachtung
Rolf Scheufele
IWH Discussion Papers,
No. 9,
2008
Abstract
This paper describes the IWH macroeconometric model, a quarterly structural model for the German Economy. It focuses on the specification and estimation on supply-side aspects of the model. This approach guarantees a theoretical derived long-run model equilibrium. It combines short-run forecasting requirements with a long-run theoretical foundation. For some macroeconomic aggregates short- and long-run effects of supply- and demand shocks are illustrated. Additionally, effects of external shocks are investigated through model simulations to illustrate aggregate model characteristics.
Read article
Evaluating communication strategies for public agencies: transparency, opacity, and secrecy
Axel Lindner
IWH Discussion Papers,
No. 8,
2008
Abstract
This paper analyses in a simple global games framework welfare effects stemming
from different communication strategies of public agencies if strategies of agents are complementary to each other: communication can either be fully transparent, or the agency opaquely publishes only its overall assessment of the economy, or it keeps information completely secret. It is shown that private agents put more weight to their private information in the transparent case than in case of opacity. Thus, in many cases, the appropriate measure against overreliance on public information is giving more details to the public instead of denying access to public information.
Read article
Die Wende in Mitteleuropa aus Sicht wirtschaftswissenschaftlicher Schulen
Ulrich Blum
Ein anderes Europa: Innovation – Anstöße – Tradition in Mittel- und Osteuropa,
2008
Abstract
The contribution inquires into the ability of different schools of economic thought to explain the decline, the transition and the later rise of the reform countries of Central and Eastern Europe. It shows that none of these disciplines, be they old or new institution economics or be they functionalist or structural schools, can provide a satisfactory complete explanation for decline and reconstruction. A consistent explanation rests on a transaction-cost approach extended to information economics. It sees false adaptations of institutions in the technological sense and with respect to incentive structures as main problems.
Read article
Die volkswirtschaftliche Bedeutung von Private Equity
Ulrich Blum
Private Equity. Beurteilungs- und Bewertungsverfahren von Kapitalbeteiligungsgesellschaften,
2008
Abstract
Private equity is a very specific institutional way of providing private capital to enterprises. The contribution inquires why it increased its economic importance and public visibility over the last years. The role of private capital within the framework of the innovation theory, transaction cost theory and the risk theory is assessed. Private equity is a specific way of organizing the procurement with private capital for enterprises in risky markets in order to efficiently reducing transaction costs. More and above, it is important for credible market-entry strategies. As most markets are incomplete and because of tax regulations which cannot be considered to be efficient under present conditions, the economic role of private equity has increased. The increase economic role, but also importance in the firm, necessitates a steering of enterprises along value-oriented objectives. As the “hype” has decreased in summer 2007, the article ends with an assessment of future prospects.
Read article
Alterung und technologisches Innovationspotential. Eine Linked Employer-Employee Analyse
Lutz Schneider
Zeitschrift für Bevölkerungswissenschaft,
No. 1,
2008
Abstract
Growth in advanced economies is essentially driven by innovation activities. The question rises from a demographic point of view as to whether the trend of an ageing workforce will affect the innovation capacities of these economies. To answer this question, the paper examines on the basis of a German linked-employer-employee-dataset whether an older workforce lowers a firm’s potential to generate product innovations. The empirical approach is based on an Ordered-logit regression model, relating a firm’s innovation potential to the age composition of its employees. The analysis provides evidence of significant age effects. The estimated age-innovation-profile follows an inverted U-shaped pattern, it peaks at the age of about 40 years. A separate estimation shows that technicians and engineers age seems to be particularly relevant.
Read article
Shrinking due to corpulence? BMI in childhood predicts subsequent linear growth among US children and youth, 1963-1970
Marco Sunder
Annals of Human Biology,
2008
Abstract
While the USA is one of the most opulent countries, its population is not among the tallest but is among the most corpulent. This short report investigates the association between body mass index in childhood and subsequent change in height-for-age at the individual level, based on data from the National Health Examination Study (1963-1970). A sub-sample of participants in this survey was measured twice at intervals between 2.3 and 4.4 years, and assessed bone age can be used to account for differences in maturation at baseline. Regression results indicate that a BMI-for-age above the 85th percentile is associated with a reduction in growth by 0.03-0.06 height-for-age standard deviations per year, or roughly 1 cm within 4 years. An inefficiently high nutritional status in childhood may thus jeopardize subsequent linear growth. However, the trans-Atlantic height gap is considerably larger than what this empirical relationship could predict.
Read article
Wie effektiv sind Technologie- und Gründerzentren in den Neuen Bundesländern?
Michael Schwartz
List Forum für Wirtschafts- und Finanzpolitik,
2008
Abstract
In Eastern Germany, since the beginning of the 1990s technology centers and business incubators are established by cities and municipalities to provide a favorable business environment for young and newly founded innovative firms. Right from the beginning, the effectiveness of these support facilities has been the subject of intense academic and policy discussions, but empirical evidence on the actual effectiveness of these centers is limited so far. Taking into account that the choice of the appropriate criteria for evaluations of the effectiveness of technology centers and business incubators is far from clear cut, this article focuses on three core indicators that are generally accepted as measures for effectiveness (incubation time, share of newly founded firms in the tenant portfolio and technological level of the supported firms), and analyses for five business incubators in East Germany whether they can be characterized as being effective policy instruments. A positive assessment of the five incubators’ effectiveness can be made with regard to average incubation time of tenant companies, as well as insofar the share of newly founded firms on all supported companies is concerned. However, deficiencies are found regarding the technological level of the incubator firms.
Read article
Internationale Unternehmen im Kontext von Bankenregulierung, Kredit-Ratings und Währungskrisen
Tobias Knedlik, Johannes Ströbel
Internationales Management – Fachspezifische Tendenzen und Best-Practice,
2008
Abstract
Bonitätsbewertungen von Staaten durch Rating-Agenturen sind ein wichtiges Kriterium für international agierende Unternehmen. Da die Zahlungsfähigkeit von Ländern in Abhängigkeit zum Risiko für Währungskrisen steht, sind diese Rating-Ergebnisse auch von Interesse, um Erwartungen bezüglich der Stabilität von Währungen zu treffen.
Rating-Agenturen gewinnen durch die unter dem Stichwort Basel II diskutierten Reformvorschläge zur Bankenregulierung an Bedeutung. Insbesondere hängt das regulatorische Mindesteigenkapital unter dem standardisierten Ansatz von Basel II von der Bewertung der Kreditrisiken durch externe Rating-Agenturen ab. Bonitätsbewertungen, speziell von souveränen Schuldnern, bestimmen damit wesentlich die Höhe des Mindesteigenkapitals von Banken.
In der Vergangenheit haben Rating-Agenturen Währungskrisenrisiken systematisch unterschätzt. Diese sind jedoch für die Bewertung des Kreditausfallrisikos von souveränen Schuldnern wichtig. Nur wenn die währungskriseninduzierten Kreditausfallrisiken angemessen berücksichtigt werden, können die prozyklischen Effekte von Basel II, die vor allem dadurch entstehen, dass im Falle von Währungskrisen aufgrund der zu positiven Bewertung im Vorfeld der Krise schlagartig massive Schlechterbewertungen notwendig werden, minimiert werden.
Die Kritik an der Methode der Rating-Agenturen, insbesondere an mangelnder Berücksichtigung neuerer Währungskrisenmodelle in Folge der Asienkrisen von 1997/8, führte zu Reaktionen bei den Agenturen. So sagte z.B. Sandard & Poor’s die Berücksichtigung von mikroökonomischen Indikatoren zu, die bei aktuellen Krisen als Krisenfaktoren erkannt wurden. In der vorliegenden Arbeit wird untersucht, inwiefern sich empirische Anzeichen dafür erkennen lassen, dass mikroökonomische Indikatoren in der Praxis der Bonitätsprüfung beachtet werden.
Das Ergebnis der empirischen Untersuchungen zeigt, dass traditionelle makroökonomische Indikatoren die Rating-Ergebnisse dominieren. Es können keine Anzeichen für eine stärkere Berücksichtigung von Mikro-Indikatoren in aktuellen Ratings gefunden werden. Es muss daher geschlussfolgert werden, dass weiterhin prozyklische, krisenverstärkende Effekte von Basel II ausgehen. Die Rating-Agenturen erfüllen bislang die Rolle als frühzeitige Antizipatoren für Währungskrisenrisiken unzureichend.
Read article
Institutions and Cluster
Ulrich Blum
Handbook on Research on Clusters,
2007
Abstract
Read article
A macroeconometric model for the Euro economy
Christian Dreger, Massimiliano Marcellino
External Publications,
No. 29,
2007
Abstract
Read article