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The idea of appointing a non-national as Central Bank Governor remains surprisingly controversial. Nevertheless, given the skills required by the Governor in order to manage what no doubt are increasingly complex institutions, considering non-nationals makes good sense for at least two reasons. First, increasing the pool of candidates to include those with broader skills and backgrounds makes it easier to find a suitable person for the job. Second, non-nationals are less likely to be beholden to domestic pressure groups and could help better insulate the central bank from political pressures.
The exceptional circumstances in which the ECB has been operating in the past years are testing not only the currency union itself, but also its institutional design. While the Governing Council of the ECB was designed to mainly set interest rates optimally for the union as a whole, the recent crisis has expanded the tools of the ECB to include unconventional monetary policy actions that potentially increase the risk exposure of its balance sheet. Since each country would contribute to the losses according to its capital key, a different voting mechanism that takes into account the single country’s contribution to the ECB’s capital could be advisable.
The European Commission's Green Paper "Audit Policy: Lessons from the Crisis" raises 38 questions regarding how the audit function could be enhanced in order to contribute to increased financial stability. The authors comment on these 38 questions, arguing that the general level of audit quality can be enhanced by extending the duties of care and by tightening the regulations on liability.
Das vornehmliche Ziel der OGAW Richtlinien ist es einen gemeinsamen europäischen Markt für Investment-Dienstleistungen auf Basis wohldefinierten Qualitätsstandards zu erreichen. Ein grenzüberschreitender Vertrieb eröffnet die Möglichkeit der Ausweitung von Geschäftsaktivitäten auf neue wirtschaftlich attraktive Absatzmärkte. Die Stellungnahme kommentiert die im Gesetzesentwurf vorgeschlagenen regulatorischen Instrumente vor dem Hintergrund verschiedener gegebener Kriterien.
This article discusses the effects of the countercyclical premium discussed in insurance supervision in the context of Solvency II. While the basic principle of introducing countercyclical elements into Solvency II is endorsed, the authors argue for a system based on market scenarios which would enforce stricter capital requirements in boom times and less strict requirements in times of crisis.
The European Commission's Green Paper "The EU corporate governance framework" raises 25 questions in order to assess the effectiveness of the current corporate governance framework for European companies. The authors contribute to the EU's consultation, respond to the 25 questions and comment on the suggestions set out in the Green Paper.
After initial temporary measures in support of Greece prooved insufficient to end the sovereign debt crisis, extensive countermeasures have ensued. The heads of state of the euro group have agreed to permanent support mechanims over the course of the past two years. In addition, the European Central Bank (ECB) has become involved in the assistance program. The article provides an overview of the various support mechanisms installed and cautions against the connected legal problems.
Die unkonventionellen Maßnahmen der EZB haben nicht nur zu Bilanz- und Reputationsrisiken geführt. Vielmehr haben sie auch die Grenzen der monetären Politik zur Verteilungs- und Finanzpolitik verwischt. Die Strukturen im Finanzsystem müssen durch ordnungspolitische Maßnahmen robuster gemacht werden.
In 2011 wurde der Preis für Wirtschaftswissenschaften der schwedischen Reichsbank im Gedenken an Alfred Nobel an die US-Ökonomen Thomas J. Sargent von der New York University und Chistopher A. Sims von Princeton University verliehen. Gerade deutsche Zeitungskommentare kritisierten die Forscher vielfach für die Verwendung „unrealistischer“ Annahmen wie Nutzenmaximierung und rationale Erwartungen. Diese Kritik verkennt den maßgeblichen Beitrag von Sargent und Sims zur Entwicklung der modernen Makroökonomik. Ihre empirischen Methoden sind heute Standardwerkzeuge der akademischen Forschung und werden auch von Ökonomen in Zentralbanken, Finanzministerien und internationalen Organisationen eingesetzt. Sie haben grundlegende neue Erkenntnisse ermöglicht, zum Beispiel über die Wirkungsweise der Geld- und Fiskalpolitik.
Das neue Kreditinstitute-Reorganisationsgesetz, das als Artikel 1 des Restrukturierungsgesetzes vom 9. Dezember 2010 erlassen worden ist, führt für deutsche Kreditinsitute eine Bankenabgabe ein. Die Abgabe soll als Mittel der Prävention und Intervention dienen, um Finanzkrisen vorzubeugen und zu bekämpfen. Der vorliegende Beitrag bewertet die deutsche Bankenabgabe nach verfassungsrechtlicher Zulässigkeit und nach ihrer Zweckerfüllung.
Prodigal Italy Greece Spain?
(2011)
Contrary to widely held perceptions, workers in the southern European states that are most afflicted by the sovereign debt crisis work hard. However, labor productivity in these countries lags far behind the EU average. Structural reforms to boost productivity should be at the top of the reform agenda.
In its decision of December 13, 2011, the Constitutional Court of the state of North Rhine-Westphalia ruled that a State Court of Auditors is granted by the constitution a broad scope of powers not only to control the immediate state administration but also entities outside the direct state administration, as far as they exercise financial responsibility for the state. This ruling may have serious implications for the capital guarantees extended by EU Member States to the newly established institutions on the European level, as for instance the European Stability Mechanism (ESM).
Schlechte Erfahrungen
(2012)
Eine Transaktionssteuer auf Finanzgeschäfte würde weniger Geld einbringen, als viele ihrer Anhänger hoffen - und sie birgt gravierende ökonomische und juristische Risiken. Die Bundesregierung sollte sich der Belastungen durch eine Finanztransaktionssteuer bewusst sein – und sie nicht ohne Beteiligung der weltweit führenden Finanzplätze einführen. Eine internationale Einigung auf strengere Eigenkapitalvorschriften für Banken muss Vorrang haben.
This contribution draws on two recent publications in which the macroeconomic model data base (www.macromodelbase.com) is employed for model comparisons. The comparative approach is used to base policy analysis on a systematic evaluation of the different implications that a certain economic policy can have when submitted to different modeling approaches. In this manner, policy recommendations are more robust to modeling uncertainty. By extending the comparative approach to forecasting, the authors investigate the accuracy of different forecasting models and obtain more reliable mean forecasts.
Die Macht der Ratingagenturen beruht auch auf den vielen Gesetzen und Verordnungen, die eine Orientierung an den Ratings der drei großen Agenturen vorschreiben, sagt Wirtschaftsprofessor Reinhard Schmidt. Um die Macht der Ratingagenturen zu begrenzen, empfiehlt er viele dieser Regeln ersatzlos zu streichen.
Vermutlich schon bald wird sich die Politik mit der gesetzlichen Verankerung eines makroprudenziellen Mandats für die Deutsche Bundesbank befassen. Welche Ziele soll das Mandat beinhalten, die über die bereits bestehende Aufgabe der Bundesbank, zur Finanzstabilität im Euroraum beizutragen, hinausgehen? Welche Instrumente sollen bei der Ausübung des Mandats zum Einsatz kommen?
Rechtsbrüche im Euroraum
(2011)
Der Weg in die Knechtschaft
(2011)
Die Marktwirtschaft beruht auf dem Prinzip, dass sich die Akteure im Rahmen des gesetzlichen Regelwerkes frei entfalten können. Hier liegt die entscheidende Stärke eines marktwirtschaftlichen, freiheitlichen Systems. Millionen von Individuen erwägen, welche Aktivitäten welche Chance eröffnen. Kein anderes System ist in der Lage, das Potential auszuschöpfen, das in unzähligen Individuen steckt. Der Markt ist nun einmal das beste "Entdeckungsverfahren", wie Hayek erkannte. Wer im Rahmen der Spielregeln Erfolg hat, darf nach diesen Prinzipien den Gewinn behalten, muss aber auch für den Misserfolg haften.
Reforms or bankruptcy?
(2011)
Almost 20 Greek academic economists from renowned universities in Europe and the US have prepared a one-page statement regarding the Greek crisis. In their statement the economic experts call upon the Greek public to accept the economic program of structural reforms, privatization, efficient tax collection, and shrinking of the public sector proposed and financed by the EU partners and the IMF. Among the signatories are this year's Nobel Prize winner Christopher Pissarides and Michalis Haliassos, Director of the Center for Financial Studies and Professor for Macroeconomics and Finance at the House of Finance.
The bail-in puzzle
(2011)
Under the current conditions of a global financial crisis, notably in Europe’s banking industry, the governance role of bond markets is defunct. In fact, investors have understood that bank debt will almost always be rescued with taxpayers’ money. The widespread practice of government-led bank bailouts has thus severely corrupted the bond market, leading to the underestimation of risk and, as a consequence, the destruction of market discipline. Any feasible solution to the bank-debt-is-too-cheap problem will have to re-install true default risk for bank bond holders.
Stellungnahme zum Antrag der SPD-Fraktion auf Einführung einer Finanztransaktionssteuer in Europa
(2011)
Die Finanztransaktionssteuer ist kein geeignetes Instrument zur Verringerung systemischer Risiken, noch ein Mittel zur Vorbeugung einer Finanzkrise. Da sie zudem nur in Deutschland, Frankreich und einzelnen anderen Staaten eingeführt würde, wäre das Steueraufkommen, aufgrund von Steuerumgehung durch Verlagerung von Finanztransaktionen ins Ausland, gering.
Europa - wohin?
(2011)
Gemäß der Krönungstheorie der europäischen Währungsunion wurde der Euro eingeführt, um die Notwendigkeit gemeinsamen Regierens in der Europäischen Union allen vor Augen zu führen und so ein geordnetes Vorrücken zur europäischen Integration zu ermöglichen. In der gegenwärtigen Phase scheint indes politischer Opportunismus die Integration zu bestimmen.
Die große Herausforderung, um das systemische Risiko im Finanzsektor zu vermindern, besteht darin, kluge Finanzarchitektur zu etablieren, die gewährtleistet, dass ein verbindlicher Anteil von Bankanleihen außerhalb des Finanzsektors gehalten wird. Die Anleihegläubiger von außerhalb des Bankensektors müssen sich dadurch auszeichnen, dass sie kein Refinanzierungsrisiko haben, wenn sie eine plötzliche Verlussituation erleben.
Unternehmen und Ethik
(2010)
Die noch nicht völlig überwundene Finanzmarktkrise hat nicht nur den Gesetzgeber auf den Plan gerufen. Auch die Frage nach der Ethik der Akteure wird vielfach erörtert. Haben von Gier getriebene Finanzmarktakteure nicht nur Rechtsregeln, sondern auch ethische Normen, die Grundsätze des Wirtschaftens ehrbarer Kaufleute, gewissenlos beiseite geschoben, um sich zu bereichern? Wie läßt sich die Beachtung dieser Normen künftig sichern? Diese aktuelle Debatte soll Anlaß zu einigen allgemeineren Betrachtungen zum Thema „Unternehmen und Ethik“ sein.
This paper explores the various personal and intellectual links between Edmund Husserl, Rudolf and Walter Eucken. Our interdisciplinary approach gives an insight into Husserl’s transcendental phenomenology, Walter Eucken’s Ordoliberalism as well as in the interdependency between phenomenology and economics for which Rudolf Eucken’s philosophy of intellectual life plays an important role. Particular affiliations between phenomenology and economics can be found in the following topics: epistemology, the idea of man, the comprehension of liberty and the importance of legal or social orders, institutional rules and frameworks of regulations.
This paper analyzes the inherent dangers of paternalist economic policies associated with the newly established economic sub-disciplines of behavioral economics, economic happiness research and economic psychology. While the authors in general welcome these sub-disciplines for enriching and critically evaluating mainstream economics – especially their criticism of the Homo oeconomicus-heuristic is of great value contributing to a more realistic idea of man –, the political-economic implications as well as inherent risks of paternalist economic policies should be received with concern and thus be subject to a critical review. The paper is structured as follows: In the first step, we recapitulate Kahneman’s, Thaler/Sunstein’s, and Layard’s versions of paternalism pointing at similarities and differences alike. We contrast libertarian or soft paternalism of behavioral economics (Thaler/Sunstein) and economic psychology (Kahneman) with (Layard’s) happiness economics and its hard paternalism. In the second step, we analyze the political and economic implications and consequences of paternalism. We give an overview of the main points of criticism of paternalism from a constitutional economics perspective. The Ordnungs- vs. Prozesspolitik argument is discussed as well as epistemological, political-economic or idea of man arguments. The paper ends with some concluding remarks.
2008/9 sees the 60th anniversary of the German economic and currency reform of June 20, 1948, and the adoption of the Grundgesetz on May 23, 1949, which committed the country to the ideals of a socially committed market economy. Both of these events are important points along the path taken by the Federal Republic of Germany to reach the system of a social market economy. Since the term, Social Market Economy is often used in several different contexts and sometimes to mean contradictory things, we must ask: what exactly does the term social market economy entail? What economic-ethical ideas and theories are behind it? This paper will trace the origins of the social market economy (chapter 2) and explain the central characteristics of the Freiburg School of Economics (chapter 3), one of the main pillars of the social market economy. Central to this paper is the oeuvre of Walter Eucken, one of the leading representatives of the ordoliberal Freiburg School. The aim is to identify socio-political factors of influence and inspiration on his theory of economic policy (chapter 4) and evaluate similarities to the works of Kant, Smith and other economic philosophers. Chapter 5 will seek to elucidate Eucken’s “Program of Liberty”. We shall also allow ourselves a slight diversion to elaborate on the parallels between this work and Kant’s understanding of freedom and autonomy. Chapter 6 deals with Eucken’s dual requirements of an economic and social order (i.e. functioning and humane socio-economic order). In chapter 7, we seek to answer – with considerable reference to Adam Smith – to what extent it can be assumed that self-interest and the common good are mutually compatible. This paper concludes with a few remarks about the topicality of ordoliberalism in relation to modern, German-speaking economic ethics (chapter 8).
Following Foucault's analysis of German Neoliberalism (Ordoliberalism) and his thesis of ambiguity, this paper introduces a two-level distinction between individual and regulatory ethics. In particular, its aim is to reassess the importance of individual ethics in the conceptual framework of Ordoliberalism. The individual ethics of Ordoliberalism is based on the heritage of Judeo-Christian values and the Kantian individual liberty and responsibility. The regulatory or formal-institutional ethics of Ordoliberalism which has so far received most attention on the contrary refers to the institutional and legal framework of a socio-economic order. By distinguishing these two dimensions of ethics incorporated in German Neoliberalism, it is feasible to distinguish different varieties of neoliberalism and to link Ordoliberalism to modern economic ethics.
4 June 2013 marked the formal launch of the third generation of the Equator Principles (EP III) and the tenth anniversary of the EPs – enough reasons for evaluating the EPs initiative from an economic ethics and business ethics perspective. This chapter deals with the following questions: What has been achieved so far by the EPs? Which reform steps need to be adopted to further strengthen the EPs framework? Can the EPs be regarded as a role model in the field of sustainable finance and CSR? The first part explains the term EPs and introduces the keywords related to the EPs framework. The second part summarises the main characteristics of the newly-released third generation of the EPs. The third part critically evaluates EP III from an economic ethical and business ethics perspective. The chapter concludes with a summary of the main findings.
Variations and disparities between von Hayek and Ordoliberalism can be detected on diverse levels: 1. philosophy of science; 2. setting dissimilar priorities; 3. social philosophy; 4. genesis of norms; and, 5. notion of freedom. Therefore, it is possible to make an important distinction within neoliberalism itself, which contains at least two factions: von Hayek’s evolutionary liberalism, and German Ordoliberalism. The following essay not only takes the neoliberal separation of different varieties as granted; it proceeds further. It focuses on the topic of justice and elaborates the (slightly) differing conceptions of justice within neoliberalism. Thus, the specific contribution of the paper is that it adds a sixth dimension of differences (which is highly interconnected with the differing conceptions of genesis of norms). In this paper, I emphasize the (often neglected) subtle differences between von Hayek, Eucken, Röpke, and Rüstow, with special emphasis on their theories of justice. In this regard, I focus not only on Eucken and von Hayek; in addition, I include the concepts of justice developed by Rüstow and Röpke, as well, and, in consequence, broaden the perspective incorporating Eucken as a member of the Freiburg School of Law and Economics, and Rüstow and Röpke as representatives of Ordoliberalism in the wider sense. The paper tackles these topics in three steps. After briefly examining and discussing the existing literature and providing a literature overview on the decade-long debate on von Hayek and Ordoliberalism, I then describe von Hayek’s conception of commutative justice; particularly, justice of rules and procedures (rather than end-state justice). Then, I examine Eucken’s, Rüstow’s, and Röpke’s theories of justice, which consist of a mixture of commutative and distributive justice. Then, I draw a comparison between the ideas of justice developed by Eucken, Röpke, Rüstow, and von Hayek. The essay ends with a summary of my main findings.
Im Mittelpunkt des Gutachtens stehen die anthropologischen Grundlagen, das wirtschaftsethische Fundament und das Menschenbild der Sozialen Marktwirtschaft. Die Leitlinien des Wittenberg-Prozesses der Chemie-Sozialpartner dienen dabei als argumentative Grundstruktur. Ziel der Arbeit ist es, aufzuzeigen, dass die CSSA und der Wittenberg-Prozess auf den normativen und wirtschaftsethischen Prämissen der (originären) Sozialen Marktwirtschaft ruhen und die Sozialpartnerschaft der chemischen Industrie ein wichtiger Baustein ist auf dem Weg hin zu einer Neubegründung und Renaissance der Sozialen Marktwirtschaft vor dem Hintergrund der Globalisierung. Folgende Hypothesen sollen dabei eingehender untersucht werden: 1. Fundamental für die Wirtschaftsethik der Sozialen Marktwirtschaft ist die Unterscheidung von Individual, Unternehmens-und Ordnungsethik. 2. Das Freiheitsverständnis der Sozialen Marktwirtschaft enthält sowohl negative (im Sinne der Abwesenheit von Willkür und Zwang) als auch positive Momente (im Sinne von rationaler Selbstbestimmung und kantischer Autonomie). Darüber hinaus inkorporiert es die aus der Konstitutionenökonomik bekannten Prinzipien der Diskriminierungs und Privilegienfreiheit. 3. Das Gerechtigkeitsverständnis der Sozialen Marktwirtschaft ist synkretistisch und eklektisch; es verbindet kommutative mit distributiven Gerechtigkeitselementen. 4. Der Homo oeconomicus ist kein(!) Bestandteil der Wirtschaftsethik der Sozialen Marktwirtschaft. Diese weist vielmehr Parallelen zur Heuristik der Kulturellen Ökonomik – dem sogenannten Homo culturalis – auf. 5. Eine bedeutende Funktion innerhalb der Sozialen Marktwirtschaft kommt der Sozialpartnerschaft zu. Diese leistet einen wichtigen Beitrag zur Stärkung der sozioökonomischen Teilhabe und Inklusion auf der unternehmensethischen Ebene.
Freiburg School of Law and Economics, Freiburg (Lehrstuhl-)Tradition and the Genesis of Norms
(2014)
The paper analyzes the parallels and differences between the Freiburg School of Law and Economics represented by the works of Eucken (and Röpke) and the Freiburg (Lehrstuhl-)Tradition represented by the works of Hayek and Vanberg. The parallels are illustrated by making use of the constitutional economics concepts Ordnungspolitik (i.e., order of rules/choices over rules) as well as freedom of privileges and discrimination. The differences, which have received surprisingly little attention, include the following aspects: 1. philosophy of science and epistemology, 2. genesis of norms, and 3. political philosophy. The paper tackles these issues in three steps. The second chapter presents Vanberg’s constitutional economics theory with special emphasis on the concepts of citizen sovereignty and normative individualism. The third chapter reviews the ordoliberal concepts of science and the state which are – to a certain degree – elitist and expertocratic, that is, they rely to a considerable degree on intellectual experts (in particular, scientists) being part of the societal elite. The fourth chapter differentiates two kinds of genesis of norms: an evolutionary one and an elitist-expertocratic one allowing for a differentiation between Eucken’s and Röpke’s Ordoliberalism on the on the hand and Vanberg’s Hayekian -- and Buchanan-style constitutional economics approach on the other hand. The paper ends with a summary of the main findings.
Notenbanken haben heute nicht die Aufgabe die Geldmenge zu kontrollieren. Ihr Job ist es, den Wert des Geldes – und damit den Preis der Wirtschaftsgüter in der jeweiligen Währung – zu stabilisieren. Doch wie ist diese Preisstabilität am besten herzustellen? Muß man dabei nicht doch die Geldmenge im Auge behalten? Unter monetären Ökonomen gibt es dazu eine wissenschaftliche Debatte.
The latest appointment to the ECB's Executive Board initiated a political dispute between the European Parliament and the Euro Group on the question of representation of females on the Executive Board and the Governing Council of the ECB. The dispute has raised awareness to the fact that a culture of equality and equal opportunity should be built from the ground up. A long term plan helping talented women to emerge and be prepared to take increasing responsibilities is necessary to make sure that there is a growing pool of qualified female candidates.
This present comment suggests an amendment to the proposal for a directive of the European Parliament and of the Council, establishing a framework for the recovery and resolution of credit institutions and investment firms. The current proposal focuses on bail-in, but does not sufficiently take into account the pressure exerted on central bankers, supervisors and politicians by the fear of interbank contagion. The only way out of this hold-up type of situation can be found in bail-in bonds. Bail-in bonds are dedicated loss taking debt instruments, whose status of being first in line if it comes to default is clearly communicated from day one.
In dieser Notiz wird ein neues Konzept für eine europäische Einlagensicherung vorgeschlagen, welches den starken politischen Vorbehalten Rechnung trägt, die gegen eine Vergemeinschaftung der Haftung für Bankeinlagen bestehen. Das skizzierte drei-stufige Einlagensicherungsmodell führt existierende nationale Einlagensicherungseinrichtungen weiter, bietet einen europäischen Verlustausgleich und verhindert eine exzessive Risikoübernahme zu Lasten der internationalen Gemeinschaft.
An analyst who works in Germany is more likely to publish a high (low) price target regarding a DAX30 stock if other Germany based analysts are also optimistic (pessimistic) about the same stock. This finding is not biased by the fact that DAX30 companies are headquartered in Germany. In times of bull markets, price targets of analysts who regularly exchange their opinion are higher correlated compared to other analysts. This effect vanishes in a bearish market environment. This suggests that communication among analysts indeed plays an important role. However, analysts’ incentives induce them not to deviate too much from the overall average during an economic downturn.
With this paper, I propose a simple asset pricing model that accounts for the influence from social interaction. Investors are assumed to make up their mind about an asset’s price based on a forecasting strategy and its past profitability as well as on the contemporaneous expectations of other market participants. Empirically analysing stocks of the DAX30 index, I provide evidence that social interaction rather destabilises financial markets. Based on my results, I state that at least, it does not have a stabilising effect.
In this paper, I analyse the reciprocal social influence on investment decisions within an international group of roughly 2000 mutual fund managers that invested in companies of the DAX30. Using a robust estimation procedure, I provide empirical evidence that in the average a fund manager puts 0.69% more portfolio weight on a particular stock, if other fund managers increase the corresponding position by 1%. The dynamics of this influence on portfolio weights suggest that fund managers adjust their behaviour according to the prevailing market situation and are more strongly influenced by others in times of an economic downturn. Analysing the working locations of the fund managers, I conclude that more than 90% of the magnitude of influence is due to pure observation. While this form of influence varies much in time, the magnitude of influence resulting from the exchange of opinion is more or less constant.
Management Summary: Conducted within the project “Economic Implications of New Models for Information Supply for Science and Research in Germany”, the Houghton Report for Germany provides a general cost and benefit analysis for scientific communication in Germany comparing different scenarios according to their specific costs and explicitly including the German National License Program (NLP).
Basing on the scholarly lifecycle process model outlined by Björk (2007), the study compared the following scenarios according to their accounted costs:
- Traditional subscription publishing,
- Open access publishing (Gold Open Access; refers primarily to journal publishing where access is free of charge to readers, while the authors or funding organisations pay for publication)
- Open Access self-archiving (authors deposit their work in online open access institutional or subject-based repositories, making it freely available to anyone with Internet access; further divided into (i) CGreen Open Access’ self-archiving operating in parallel with subscription publishing; and (ii) the ‘overlay services’ model in which self-archiving provides the foundation for overlay services (e.g. peer review, branding and quality control services))
- the NLP.
Within all scenarios, five core activity elements (Fund research and research communication; perform research and communicate the results; publish scientific and scholarly works; facilitate dissemination, retrieval and preservation; study publications and apply the knowledge) were modeled and priced with all their including activities.
Modelling the impacts of an increase in accessibility and efficiency resulting from more open access on returns to R&D over a 20 year period and then comparing costs and benefits, we find that the benefits of open access publishing models are likely to substantially outweigh the costs and, while smaller, the benefits of the German NLP also exceed the costs.
This analysis of the potential benefits of more open access to research findings suggests that different publishing models can make a material difference to the benefits realised, as well as the costs faced. It seems likely that more Open Access would have substantial net benefits in the longer term and, while net benefits may be lower during a transitional period, they are likely to be positive for both ‘author-pays’ Open Access publishing and the ‘over-lay journals’ alternatives (‘Gold Open Access’), and for parallel subscription publishing and self-archiving (‘Green Open Access’). The NLP returns substantial benefits and savings at a modest cost, returning one of the highest benefit/cost ratios available from unilateral national policies during a transitional period (second to that of ‘Green Open Access’ self-archiving). Whether ‘Green Open Access’ self-archiving in parallel with subscriptions is a sustainable model over the longer term is debateable, and what impact the NLP may have on the take up of Open Access alternatives is also an important consideration. So too is the potential for developments in Open Access or other scholarly publishing business models to significantly change the relative cost-benefit of the NLP over time.
The results are comparable to those of previous studies from the UK and Netherlands. Green Open Access in parallel with the traditional model yields the best benefits/cost ratio. Beside its benefits/cost ratio, the meaningfulness of the NLP is given by its enforceability. The true costs of toll access publishing (beside the buyback” of information) is the prohibition of access to research and knowledge for society.
Does BPO pay off at the firm-level? Although there are several studies which analyze the potential benefits of BPO, there is a virtual absence of research papers on BPO outcomes. Based on an analysis of 137 Business process outsourcing (BPO) ventures at 254 German banks in a period between 1994 and 2005, we found that the outsourcer's financial performance in terms of profitability and cost efficiency was increased significantly compared to industry peers without BPO. The increase stems not from workforce reductions but rather from increased employee productivity. Further, we show how BPO governance ensures BPO success: individually negotiated outsourcing contracts help to improve cost efficiency and profitability measures. Relational governance based on trust has only positive effects on profitability. Keywords: Business Process Outsourcing, firm performance, firm characteristics, banking, German banks, governance JEL Classifications: G21, L14, L21, L24
The syndicated loan market, as a hybrid between public and private debt markets, comprises financial institutions with access to valuable private information about borrowers as a result of close bank-borrower relationships. In this paper, we seek empirical evidence for the costs of these relationships in a sample of UK syndicated loan contracts for the time period 1996 through 2005. Using detailed financial data for both borrowers (private and public companies) and for financial institutions, we find that undercapitalized banks charge higher loan spreads for loans to opaque borrowers using various measures for borrower opaqueness and controlling for bank, borrower and loan characteristics. We further analyze this hold-up effect over the business cycle and find that it only prevails during recessions. In expansion phases, however, we do not find evidence for banks exploiting their information monopoly. This finding is consistent with theories on bank reputation in bank loan commitments. Ambiguity about borrower financial health, which induces the information monopoly in the first place, also gives banks the discretion to exploit or not exploit informational captured borrowers. Our findings are both statistically and economically significant and robust to alternative bank and macroeconomic risk proxies. We address potential concerns about unobserved borrower heterogeneity exploiting the panel data nature of our sample. Using firm-bank fixed effect regressions, we find supporting evidence for our theoretical framework. JEL Classifications: G14, G21, G22, G23, G24 Keywords: Syndicated loans; Hold-up; Lending relationships; Business cycle
Over the last four decades the literature on bond rating changes and its effects on security prices increased significantly with almost all studies not controlling for the respective reason for those. We therefore investigate the impact of rating events on the stock and the credit default swap (CDS) market incorporating rating reviews and rating changes together with the reason mentioned by the rating agency. Our results for the general effects are in line with prior findings but conditioning on the respective reason shows that the markets’ anticipation of rating actions is largely driven by events due to changes in firms’ operating performance. Furthermore, we provide empirical evidence for the hypothesis in prior literature that a surprise downgrade does not necessarily have to be bad news for stockholders when wealth is transferred from bondholders, but negative rating actions are always bad news for bondholders. The results additionally reveal increasing rating announcement effects by declining credit quality of firms for both rating reviews and changes. JEL Classification: D82, G14, G20. Keywords: Credit Default Swaps, Credit Ratings, Credit Rating Reasons, Event Study.
Applying an investment perspective to higher education, the paper presents detailed empirical evidence on the rate of return to higher education and its determinants. Employing a sample of 17,180 higher education graduates derived from the German Labor Force Survey 2004, we show considerable variation in the rates of return to higher education across the different subjects, with some subjects on average not representing attractive private investments from an economic point of view. We find that the decision what to study is worth several hundred thousand Euros. Applying regression analysis, we find gender- and degree-specific return advantages only in certain subjects. Comparing the return of an investment in higher education and the production cost of higher education, we show that more expensive subjects (apart from Medicine) yield a lower return. When considering the cost of study, the overall order of attractiveness of the different forms of education remains stable, but the investment in further subjects is no longer clearly attractive. Keywords: Returns to Education, Human Capital, Higher Education Earnings Capacity.
Im Rahmen eines Börsen-Großexperiments anlässlich der Fußball-WM 1998 untersuchen wir den Einfluss von Aktienbetreuern auf die Marktliquidität. Die Marktformen des kontinuierlichen Handels, eines Systems mit einem monopolistischen Aktienbetreuer und mit konkurrierenden Betreuern wurden durch einen Gruppenvergleich unterschiedlich betreuter Aktien analysiert. Die Liquidität wurde mit Hilfe des bid-ask-Spreads und der inversen Markttiefe gemessen, einer Kenngröße zur Charakterisierung der Preis-Mengen-Relation der Liquidität. Wir finden, dass die betreuten Märkte liquider sind als die unbetreuten, und die konkurrierende Betreuung mehr Liquidität generiert als die eines Monopolisten. Nach kursrelevanten Informationsereignissen kehrten die Spreads in den betreuten Märkten schneller zu ihrem normalen Niveau zurück. Durch Rekonstruktion der nichtanonymen Orderbücher konnte der direkte Einfluß der Betreuer auf die Liquidität von den Beiträgen der übrigen Marktteilnehmer separiert werden. Interessanterweise zeigt sich, dass nur ein Teil der Liquiditätsverbesserung mit den Orders der Betreuer erklärt werden kann. Demnach stünden die Liquiditätsbereitstellung durch Betreuer und die der anderen Marktteilnehmer nicht in einer konkurrierenden, sondern komplementären Beziehung zueinander.
This paper documents the experiences of assurance evaluation during the early stage of a large software development project. This project researches, contracts and integrates privacy-respecting software to business environments. While assurance evaluation with ISO 15408 Common Criteria (CC) within the certification schemes is done after a system has been completed, our approach executes evaluation during the early phases of the software life cycle. The promise is to increase quality and to reduce testing and fault removal costs for later phases of the development process. First results from the still-ongoing project suggests that the Common Criteria can define a framework for assurance evaluation in ongoing development projects.
In this paper, I examine the potential of mobile alerting services empowering investors to react quickly to critical market events. Therefore, an analysis of short-term (intraday) price effects is performed. I find abnormal returns to company announcements which are completed within a timeframe of minutes. To make use of these findings, these price effects are predicted using pre-defined external metrics and different estimation methodologies. Compared to previous research, the results provide support that artificial neural networks and multiple linear regression are good estimation models for forecasting price effects also on an intraday basis. As most of the price effect magnitude and effect delay can be estimated correctly, it is demonstrated how a suitable mobile alerting service combining a low level of user-intrusiveness and timely information supply can be designed.
Multiplayer games have become very popular in the PC market. Almost none of the current games are shipped without some support for multiplayer gaming. At the same time mobile devices are becoming more powerful and popularity of games on these platforms increases. However, there are almost no games that support multiplayer gaming despite the multiple options of these devices to connect with each other and build mobile ad hoc networks. Reasons for this lack of multiplayer support are the high diversity of mobile devices as well as the different protocols and their properties that these devices support. With “SmartBlaster” we developed a multiplayer game for several different platforms that is using several different channels (Bluetooth, IrDa, 802.11 and other networks supporting TCP/IP) to communicate between them.
Serial correlation in dynamic panel data models with weakly exogenous regressor and fixed effects
(2005)
Our paper wants to present and compare two estimation methodologies for dynamic panel data models in the presence of serially correlated errors and weakly exogenous regressors. The ¯rst is the ¯rst di®erence GMM estimator as proposed by Arellano and Bond (1991) and the second is the transformed Maximum Likelihood Estimator as proposed by Hsiao, Pesaran, and Tahmiscioglu (2002). Thereby, we consider the ¯xed e®ects case and weakly exogenous regressors. The ¯nite sample properties of both estimation methodologies are analysed within a simulation experiment. Furthermore, we will present an empirical example to consider the performance of both estimators with real data. JEL Classification: C23, J64
The effects of vocational training programmes on the duration of unemployment in Eastern Germany
(2005)
Vocational training programmes have been the most important active labour market policy instrument in Germany in the last years. However, the still unsatisfying situation of the labour market has raised doubt on the efficiency of these programmes. In this paper, we analyse the effects of the participation in vocational training programmes on the duration of unemployment in Eastern Germany. Based on administrative data for the time between the October 1999 and December 2002 of the Federal Employment Administration, we apply a bivariate mixed proportional hazards model. By doing so, we are able to use the information of the timing of treatment as well as observable and unobservable influences to identify the treatment effects. The results show that a participation in vocational training prolongates the unemployment duration in Eastern Germany. Furthermore, the results suggest that locking-in effects are a serious problem of vocational training programmes. JEL Classification: J64, J24, I28, J68
In dieser Studie werden die Wirkungen von Arbeitsbeschaffungsmaßnahmen (ABM) in Deutschland auf die individuellen Eingliederungswahrscheinlichkeiten der Teilnehmer in reguläre Beschäftigung evaluiert. Für die Untersuchung wird ein umfangreicher und informativer Datensatz aus den Datenquellen der Bundesagentur für Arbeit (BA) verwendet, der es ermöglicht, die Wirkungen der Programme differenziert nach individuellen Unterschieden der Teilnehmer und mit Berücksichtigung der heterogenen Arbeitsmarktstruktur zu untersuchen. Der Datensatz enthält Informationen zu allen Teilnehmern in ABM, die ihre Maßnahmen im Februar 2000 begonnen haben, und zu einer Kontrollgruppe von Nichtteilnehmern, die im Januar 2000 arbeitslos waren und im Februar 2000 nicht in die Programme eingetreten sind. Mit Hilfe der Informationen der Beschäftigtenstatistik ist es hierbei erstmals möglich, den Abgang in reguläre Beschäftigung auf Grundlage administrativer Daten zu untersuchen. Der vorliegende Verbleibszeitraum reicht bis Dezember 2002. Unter Verwendung von Matching-Methoden auf dem Ansatz potenzieller Ergebnisse werden die Effekte von ABM mit regionaler Unterscheidung und für besondere Problem- und Zielgruppen des Arbeitsmarktes geschätzt. Die Ergebnisse zeigen zwar deutliche Unterschiede in den Effekten für Subgruppen, insgesamt weisen die empirischen Befunde jedoch darauf hin, dass das Ziel der Eingliederung in reguläre ungeförderte Beschäftigung durch ABM weitgehend nicht realisiert werden konnte. JEL: C40 , C13 , J64 , H43 , J68
Comparison of MSACD models
(2003)
We propose a new framework for modelling time dependence in duration processes on financial markets. The well known autoregressive conditional duration (ACD) approach introduced by Engle and Russell (1998) will be extended in a way that allows the conditional expectation of the duration process to depend on an unobservable stochastic process which is modelled via a Markov chain. The Markov switching ACD model (MSACD) is a very flexible tool for description and forecasting of financial duration processes. In addition, the introduction of an unobservable, discrete valued regime variable can be justified in the light of recent market microstructure theories. In an empirical application we show that the MSACD approach is able to capture several specific characteristics of inter trade durations while alternative ACD models fail. JEL classification: C22, C25, C41, G14
We propose a new framework for modelling the time dependence in duration processes being in force on financial markets. The pioneering ACD model introduced by Engle and Russell (1998) will be extended in a manner that the duration process will be accompanied by an unobservable stochastic process. The Discrete Mixture ACD framework provides us with a general methodology which puts the idea into practice. It is established by introducing a discrete-valued latent regime variable which can be justified in the light of recent market microstructure theories. The empirical application demonstrates its ability to capture specific characteristics of intraday transaction durations while alternative approaches fail. JEL classification: C41, C22, C25, C51, G14.
In recent methodological work the well known ACD approach, originally introduced by Engle and Russell (1998), has been supplemented by the involvement of an unobservable stochastic process which accompanies the underlying process of durations via a discrete mixture of distributions. The Mixture ACD model, emanating from the specialized proposal of De Luca and Gallo (2004), has proved to be a moderate tool for description of financial duration data. The use of one and the same family of ordinary distributions has been common practice until now. Our contribution incites to use the rich parameterized comprehensive family of distributions which allows for interacting different distributional idiosyncrasies. JEL classification: C41, C22, C25, C51, G14.
We propose a new framework for modelling the time dependence in duration processes being in force on financial markets. The pioneering ACD model introduced by Engle and Russell (1998) will be extended in a manner that the duration process will be accompanied by an unobservable stochastic process. The Discrete Mixture ACD framework provides us with a general methodology which puts the idea into practice. It is established by introducing a discrete-valued latent regime variable which can be justified in the light of recent market microstructure theories. The empirical application demonstrates its ability to capture specific characteristics of intraday transaction durations while alternative approaches fail. JEL classification: C41, C22, C25, C51, G14.
In recent methodological work the well known ACD approach, originally introduced by Engle and Russell (1998), has been supplemented by the involvement of an unobservable stochastic process which accompanies the underlying process of durations via a discrete mixture of distributions. The Mixture ACD model, emanating from the specialized proposal of De Luca and Gallo (2004), has proved to be a moderate tool for description of financial duration data. The use of one and the same family of ordinary distributions has been common practice until now. Our contribution incites to use the rich parameterized comprehensive family of distributions which allows for interacting different distributional idiosyncrasies. JEL classification: C41, C22, C25, C51, G14
We propose a new framework for modeling time dependence in duration processes. The ACD approach introduced by Engle and Russell (1998) will be extended so that the conditional expectation of the durations depends on an unobservable stochastic process which is modeled via a Markov chain. The Markov switching ACD model (MSACD) is a flexible tool for description of financial duration processes. The introduction of a latent information regime variable can be justified in the light of recent market microstructure theories. In an empirical application we show that the MSACD approach is able to capture specific characteristics of inter trade durations while alternative ACD models fail. JEL classification: C41, C22, C25, C51, G14
Internationale Verkehrsflughäfen sind Einrichtungen, die eine zentrale ökonomische Bedeutung für das regionale Umfeld haben. Zusätzlich zu ihrer eigentlichen Funktion als Anbieter von Flugverkehrsleistungen werden Güter und Dienstleistungen angeboten, die in unterschiedlich starkem Ausmaß an die Verkehrsfunktion gekoppelt sind. Neben der Flughafengesellschaft und den Flugverkehrsgesellschaften tragen beispielsweise gastronomische Einrichtungen, Groß- und Einzelhändler, Luftfrachtspeditionen, Expressdienste, Reiseveranstalter, Flugsicherung, Zoll, Catering-Unternehmen zu den ökonomischen Aktivitäten des Flughafens bei. Die Palette der verkehrsbezogenen Aktivitäten am Flughafen reicht von der Betreuung der Passagiere über Reparatur- und Wartungsarbeiten für die Fluggesellschaften bis hin zur Abwicklung des Frachtverkehrs. ...
During the last decade, there has been a significant bias towards bond financing on emerging markets, with private investors relying on a bail-out of bonds by the international community. The bias has been a main cause for recent excessive fragility of international capital markets. The paper shows how collective action clauses in bonds contracts help to involve the private sector in risk sharing. It argues that such clauses, as a market based instrument, will raise spreads for emerging market debt and so help to correct a market failure towards excessive bond finance. Recent pressure by the IMF to involve the private sector is facing a conflict between the principle to honour existing contracts and the principle of equal treatment of bondholders.
Structural positions are very common in investment practice. A structural position is defined as a permanent overweighting of a riskier asset class relative to a prespecified benchmark portfolio. The most prominent example for a structural position is the equity bias in a balanced fund that arises by consistently overweighting equities in tactical asset allocation. Another example is the permanent allocation of credit in a fixed income portfolio with a government benchmark. The analysis provided in this article shows that whenever possible, structural positions should be avoided. Graphical illustrations based on Pythagorean theorem are used to make a connection between the active risk/return and the total risk/return framework. Structural positions alter the risk profile of the portfolio substantially, and the appeal of active management – to provide active returns uncorrelated to benchmark returns and hence to shift the efficient frontier outwards – gets lost. The article demonstrates that the commonly used alpha – tracking error criterion is not sufficient for active management. In addition, structural positions complicate measuring managers’ skill. The paper also develops normative implications for active portfolio management. Tactical asset allocation should be based on the comparison of expected excess returns of an asset class to the equilibrium risk premium of the same asset class and not to expected excess returns of other asset classes. For the cases, where structural positions cannot be avoided, a risk budgeting approach is introduced and applied to determine the optimal position size. Finally, investors are advised not to base performance evaluation only on simple manager rankings because this encourages managers to take structural positions and does not reward efforts to produce alpha. The same holds true for comparing managers’ information ratios. Information ratios, in investment practice defined as the ratio of active return to active risk, do not uncover structural positions.
Hackethal and Schmidt (2003) criticize a large body of literature on the financing of corporate sectors in different countries that questions some of the distinctions conventionally drawn between financial systems. Their criticism is directed against the use of net flows of finance and they propose alternative measures based on gross flows which they claim re-establish conventional distinctions. This paper argues that their criticism is invalid and that their alternative measures are misleading. There are real issues raised by the use of aggregate data but they are not the ones discussed in Hackethal and Schmidt’s paper. JEL Classification: G30
Empirical evidence suggests that even those firms presumably most in need of monitoring-intensive financing (young, small, and innovative firms) have a multitude of bank lenders, where one may be special in the sense of relationship lending. However, theory does not tell us a lot about the economic rationale for relationship lending in the context of multiple bank financing. To fill this gap, we analyze the optimal debt structure in a model that allows for multiple but asymmetric bank financing. The optimal debt structure balances the risk of lender coordination failure from multiple lending and the bargaining power of a pivotal relationship bank. We show that firms with low expected cash-flows or low interim liquidation values of assets prefer asymmetric financing, while firms with high expected cash-flow or high interim liquidation values of assets tend to finance without a relationship bank.
Tractable hedging - an implementation of robust hedging strategies : [This Version: March 30, 2004]
(2004)
This paper provides a theoretical and numerical analysis of robust hedging strategies in diffusion–type models including stochastic volatility models. A robust hedging strategy avoids any losses as long as the realised volatility stays within a given interval. We focus on the effects of restricting the set of admissible strategies to tractable strategies which are defined as the sum over Gaussian strategies. Although a trivial Gaussian hedge is either not robust or prohibitively expensive, this is not the case for the cheapest tractable robust hedge which consists of two Gaussian hedges for one long and one short position in convex claims which have to be chosen optimally.
Although the commoditisation of illiquid asset exposures through securitisation facilitates the disciplining effect of capital markets on the risk management, private information about securitised debt as well as complex transaction structures could possibly impair the fair market valuation. In a simple issue design model without intermediaries we maximise issuer proceeds over a positive measure of issue quality, where a direct revelation mechanism (DRM) by profitable informed investors engages endogenous price discovery through auction-style allocation preference as a continuous function of perceived issue quality. We derive an optimal allocation schedule for maximum issuer payoffs under different pricing regimes if asymmetric information requires underpricing. In particular, we study how the incidence of uninformed investors at varying levels of valuation uncertainty and their function of clearing the market effects profitable informed investment. We find that the issuer optimises own payoffs at each valuation irrespective of the applicable pricing mechanism by awarding informed investors the lowest possible allocation (and attendant underpricing) that still guarantees profitable informed investment. Under uniform pricing the composition of the investor pool ensures that informed investors appropriate higher profit than uninformed types. Any reservation utility by issuers lowers the probability of information disclosure by informed investors and the scope of issuers to curtail profitable informed investment. JEL Classifications: D82, G12, G14, G23
Asset securitisation as a risk management and funding tool : what does it hold in store for SMES?
(2005)
The following chapter critically surveys the attendant benefits and drawbacks of asset securitisation on both financial institutions and firms. It also elicits salient lessons to be learned about the securitisation of SME-related obligations from a cursory review of SME securitisation in Germany as a foray of asset securitisation in a bank-centred financial system paired with a strong presence of SMEs in industrial production. JEL Classification: D81, G15, M20
As a sign of ambivalence in the regulatory definition of capital adequacy for credit risk and the quest for more efficient refinancing sources collateral loan obligations (CLOs) have become a prominent securitisation mechanism. This paper presents a loss-based asset pricing model for the valuation of constituent tranches within a CLO-style security design. The model specifically examines how tranche subordination translates securitised credit risk into investment risk of issued tranches as beneficial interests on a designated loan pool typically underlying a CLO transaction. We obtain a tranchespecific term structure from an intensity-based simulation of defaults under both robust statistical analysis and extreme value theory (EVT). Loss sharing between issuers and investors according to a simplified subordination mechanism allows issuers to decompose securitised credit risk exposures into a collection of default sensitive debt securities with divergent risk profiles and expected investor returns. Our estimation results suggest a dichotomous effect of loss cascading, with the default term structure of the most junior tranche of CLO transactions (“first loss position”) being distinctly different from that of the remaining, more senior “investor tranches”. The first loss position carries large expected loss (with high investor return) and low leverage, whereas all other tranches mainly suffer from loss volatility (unexpected loss). These findings might explain why issuers retain the most junior tranche as credit enhancement to attenuate asymmetric information between issuers and investors. At the same time, the issuer discretion in the configuration of loss subordination within particular security design might give rise to implicit investment risk in senior tranches in the event of systemic shocks. JEL Classifications: C15, C22, D82, F34, G13, G18, G20
Elektronische (digitale) Zeitschriften spielen seit mehreren Jahren eine zunehmend wichtigere Rolle in der Informationsversorgung von Wissenschaft und Forschung. Während jedoch die Nutzungsformen sich so gut wie vollständig an den Standards des www mit all seinen Vorzügen orientieren, sind die Preisbildungsmechanismen noch stark an der Welt der gedruckten Zeitschriften orientiert. Sie unterliegen allerdings zur Zeit einem erheblichen Wandel, ohne dass erkennbar wäre, welche Preisstrukturen zukünftig den Markt bestimmen werden. Das seit November 2001 laufende DFG-Projekt "Perspektiven für den Bezug elektronischer Informationsressourcen in der Bundesrepublik Deutschland" hat sich zum Ziel gesetzt, die Marktsituation für elektronische Informationsversorgung im hochschulischen Bereich zu analysieren und davon ausgehend Perspektiven abzuleiten. In einer ersten Phase sollen zunächst die Nutzungsgewohnheiten seitens der Wissenschaftler und Studierenden untersucht werden. Die Ergebnisse werden in der vorliegenden Arbeit exemplarisch aufgezeigt, eine detaillierte Nutzungsanalyse wird zu einem späteren Zeitpunkt veröffentlicht.
Eine bedeutende Stelle der betrieblichen Funktionen nimmt die Beschaffung der Ware am Markt ein. Die Organisation des Beschaffungswesens ist dabei integraler Bestandteil der Unternehmensstrategie und führung. Die Beschaffung im engeren Sinne umfasst dabei den Einkauf von Anlagegütern, Roh-, Hilfs- und Betriebsstoffen, Fertigwaren sowie von Dienstleistungen (z. B. Transportleistungen) und Rechten (z. B. Lizenzen aus Patenten). Die Beschaffung ist neben der Produktions- und Absatzfunktion einer der Hauptbereiche betrieblicher Planung und Leistungserstellung [Bichler/Krohn 2001]. Die Hauptaufgabe des Einkaufs im Industrieunternehmen besteht in der Beschaffung von Materialen und Teilen nach den von den zuständigen Fachabteilungen vorgegebenen Qualitätsvorschriften, zu günstigen Konditionen und zum richtigen Zeitpunkt, wodurch die termingerechte Produktion sicher gestellt werden kann. Eine weiterführende Aufgabe des Einkaufs besteht in einer Analyse des Beschaffungsmarktes sowie in der Aufbereitung und Weitergabe von Informationen an den Vertrieb. Es sind die Hersteller auf dem Markt zu suchen und zu katalogisieren, welche die entsprechenden Materialien in gleich bleibender Qualität und zu günstigen Preisen liefern können [Bichler/Krohn 2001]. Die Organisation des Einkaufsprozesses stellt einen bedeutenden Problemfokus für die Unternehmensleitung dar. Gegenstand dieser Untersuchung ist die Fragestellung, wie sich Einkaufgenossenschaften im Bibliothekswesen optimal bilden sollen. Die Frage der Optimalität muss dazu zunächst präzisiert werden und wird vor dem Hintergrund verschiedener Zielsetzungen näher diskutiert. Einkaufsgenossenschaften und verbünde finden sich in der Praxis immer häufiger und stellen probate Mittel dar, die Kosten für den Bezug von nötigen Betriebsmaterialen nachhaltig zu senken. Im Sektor der wissenschaftlichen Informationsversorgung können seit einigen Jahren im Bereich der elektronischen Informationsressourcen ebenfalls Einkaufsverbünde in Form von Bibliothekskonsortien beobachtet werden. Ziel dieser Genossenschaften ist es, gemeinsam Lizenzen für elektronische Informationen zu erwerben. Die derzeitige Bezugspraxis zeigt, dass Konsortien überwiegend regional ausgerichtet sind und weniger auf thematischer Ebene agieren. Auch die Größe sowie Nachfragestruktur und intensität finden weitestgehend noch keine Beachtung. Diese Arbeit untersucht Vor- und Nachteile von Einkaufgenossenschaften und diskutiert verschiedene Entscheidungsmodelle zur Bestimmung einer optimalen Konsortialstruktur vor dem Hintergrund der derzeitig gegebenen Marktstrukturen im Sektor der wissenschaftlichen Informationsversorgung.
With ubiquitous use of digital camera devices, especially in mobile phones, privacy is no longer threatened by governments and companies only. The new technology creates a new threat by ordinary people, who now have the means to take and distribute pictures of one’s face at no risk and little cost in any situation in public and private spaces. Fast distribution via web based photo albums, online communities and web pages expose an individual’s private life to the public in unpreceeded ways. Social and legal measures are increasingly taken to deal with this problem. In practice however, they lack efficiency, as they are hard to enforce in practice. In this paper, we discuss a supportive infrastructure aiming for the distribution channel; as soon as the picture is publicly available, the exposed individual has a chance to find it and take proper action.
Central wage bargaining and local wage flexibility : evidence from the entire wage distribution
(1998)
We argue that in labor markets with central wage bargaining wage flexibility varies systematically across the wage distribution: local wage flexibility is more relevant for the upper part of the wage distribution, and flexibility of wages negotiated under central wage bargaining affects the lower part of the wage distribution. Using a random sample of German social-security accounts, we estimate wage flexibility across the wage distribution by means of quantile regressions. The results support our hypothesis, as employees with low wages have significantly lower local wage flexibility than high wage employees. This effect is particularly relevant for the lower educational groups. On the other hand, employees with low wages tend to have a higher wage flexibility with respect to national unemployment.
This paper shows that abnormal stock price returns around open market repurchase announcements are about four times higher in Germany than in the US (12% versus 3%). We hypothesize that this observation can be explained by country differences in repurchase regulation. Our empirical evidence indicates that German managers primarily buy back shares to signal an undervaluation of their firm. We demonstrate that the stringent repurchase process prescribed by German law attributes a higher credibility to such a signal than lax US regulations and thereby corroborate our hypothesis.
Im Rahmen einer Ereignisstudie am deutschen Kapitalmarkt wird untersucht, ob Adhoc- Mitteilungen korrekt eingesetzt werden. Die Ergebnisse belegen, daß Nemax-50-Unternehmen die Veröffentlichung potentiell positiver Meldungsinhalte bevorzugen und die Bekanntmachung negativer Mitteilungen verzögern. Außerdem veröffentlichen Nemax-50-Werte in positiven Marktphasen besonders viele Mitteilungen und einen besonders hohen Anteil an positiven Meldungsinhalten, um von der positiven Stimmung der Marktteilnehmer zu profitieren. Dax-30-Werte verhalten sich dagegen regelgerecht. Die Befunde belegen die Notwendigkeit einer stärkeren Überwachung des Veröffentlichungsverhaltens der Emittenten, die in 2002 am Neuen Markt gelistet waren.