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The complexity resulting from intertwined uncertainties regarding model misspecification and mismeasurement of the state of the economy defines the monetary policy landscape. Using the euro area as laboratory this paper explores the design of robust policy guides aiming to maintain stability in the economy while recognizing this complexity. We document substantial output gap mismeasurement and make use of a new model data base to capture the evolution of model specification. A simple interest rate rule is employed to interpret ECB policy since 1999. An evaluation of alternative policy rules across 11 models of the euro area confirms the fragility of policy analysis optimized for any specific model and shows the merits of model averaging in policy design. Interestingly, a simple difference rule with the same coefficients on inflation and output growth as the one used to interpret ECB policy is quite robust as long as it responds to current outcomes of these variables.
In the aftermath of the global financial crisis and great recession, many countries face substantial deficits and growing debts. In the United States, federal government outlays as a ratio to GDP rose substantially from about 19.5 percent before the crisis to over 24 percent after the crisis. In this paper we consider a fiscal consolidation strategy that brings the budget to balance by gradually reducing this spending ratio over time to the level that prevailed prior to the crisis. A crucial issue is the impact of such a consolidation strategy on the economy. We use structural macroeconomic models to estimate this impact focussing primarily on a dynamic stochastic general equilibrium model with price and wage rigidities and adjustment costs. We separate out the impact of reductions in government purchases and transfers, and we allow for a reduction in both distortionary taxes and government debt relative to the baseline of no consolidation. According to the model simulations GDP rises in the short run upon announcement and implementation of this fiscal consolidation strategy and remains higher than the baseline in the long run. We explore the role of the mix of expenditure cuts and tax reductions as well as gradualism in achieving this policy outcome. Finally, we conduct sensitivity studies regarding the type of model used and its parameterization.
The complexity resulting from intertwined uncertainties regarding model misspecification and mismeasurement of the state of the economy defines the monetary policy landscape. Using the euro area as laboratory this paper explores the design of robust policy guides aiming to maintain stability in the economy while recognizing this complexity. We document substantial output gap mismeasurement and make use of a new model data base to capture the evolution of model specification. A simple interest rate rule is employed to interpret ECB policy since 1999. An evaluation of alternative policy rules across 11 models of the euro area confirms the fragility of policy analysis optimized for any specific model and shows the merits of model averaging in policy design. Interestingly, a simple difference rule with the same coefficients on inflation and output growth as the one used to interpret ECB policy is quite robust as long as it responds to current outcomes of these variables.
A study on the impact of mobile telecommunication on the welfare of sub saharan african countries
(2010)
Africa: A continent is waking up. Not through aid or wealth from the exploitation of natural resources, but through a technological revolution. The access to affordable mobile telecommunication. Inspired by deregulation and pioneered by local champions who have taken a lead in what is today's fastest growing mobile market in the world. There is money to be made in these markets, attracting more and more operators from the northern hemisphere.
However positive the short term impact of this revolution may be, governments should try hard to assure a market of continued competition among network operators, as this competition is the source of a self propelled creation of welfare and new opportunities, motivated from within Africa.
Chapter 1 of this thesis highlights the positive impact of mobile telecommunication on the social and economic life in Sub Saharan Africa. Chapter 2 builds on the static as well as the dynamic version of the Network Pricing Game, a model developed by Dr. Carolyn Gideon, to stress the immanent threat of network markets turning into a monopoly. This theses ends in Chapter 3 with an brief outlook on further drivers of economic growth and opportunities awaiting Sub Saharan Africa in the coming decade.
We analyze the implications of the governance structure in academic faculties for their recruitment decisions when competing for new researchers. The value to individual members through social interaction within the faculty depends on the average status of their fellow members. In recruitment decisions, incumbent members trade off the effect of entry on average faculty status against alternative uses of the recruitment budget if no entry takes place. We show that the best candidates join the best faculties but that they receive lower wages than some lesser ranking candidates. We also study the allocation of surplus created by the entry of a new faculty member and show that faculties with symmetric status distributions maximize their joint surplus under majority voting.
This paper studies constrained portfolio problems that may involve constraints on the probability or the expected size of a shortfall of wealth or consumption. Our first contribution is that we solve the problems by dynamic programming, which is in contrast to the existing literature that applies the martingale method. More precisely, we construct the non-separable value function by formalizing the optimal constrained terminal wealth to be a (conjectured) contingent claim on the optimal non-constrained terminal wealth. This is relevant by itself, but also opens up the opportunity to derive new solutions to constrained problems. As a second contribution, we thus derive new results for non-strict constraints on the shortfall of inter¬mediate wealth and/or consumption.
This chapter aims to provide a hands-on approach to New Keynesian models and their uses for macroeconomic policy analysis. It starts by reviewing the origins of the New Keynesian approach, the key model ingredients and representative models. Building blocks of current-generation dynamic stochastic general equilibrium (DSGE) models are discussed in detail. These models address the famous Lucas critique by deriving behavioral equations systematically from the optimizing and forward-looking decision-making of households and firms subject to well-defined constraints. State-of-the-art methods for solving and estimating such models are reviewed and presented in examples. The chapter goes beyond the mere presentation of the most popular benchmark model by providing a framework for model comparison along with a database that includes a wide variety of macroeconomic models. Thus, it offers a convenient approach for comparing new models to available benchmarks and for investigating whether particular policy recommendations are robust to model uncertainty. Such robustness analysis is illustrated by evaluating the performance of simple monetary policy rules across a range of recently-estimated models including some with financial market imperfections and by reviewing recent comparative findings regarding the magnitude of government spending multipliers. The chapter concludes with a discussion of important objectives for on-going and future research using the New Keynesian framework.
We propose a model of the dynamics of organizational communication. Our model specifies the mechanics by which communication impact is fed back to communication inputs and closes the gap between sender and receiver of messages. We draw on language critique, a branch of language philosophy, and derive joint linguistic actions of interlocutors to explain the emergence and adaptation of communication on the group level. The model is framed by Te'eni's cognitive-affective model of organizational communication.
An information system is more than just the information technology; it is the system that emerges from the complex interactions and relationships between the information technology and the organization. However, what impact information technology has on an organization and how organizational structures and organizational change influence information technology remains an open question. We propose a theory to explain how communication structures emerge and adapt to environmental changes. We operationalize the interplay of information technology and organization as language communities whose members use and develop domain-specific languages for communication. Our theory is anchored in the philosophy of language. In developing it as an emergent perspective, we argue that information systems are self-organizing and that control of this ability is disseminated throughout the system itself, to the members of the language community. Information technology influences the dynamics of this adaptation process as a fundamental constraint leading to perturbations for the information system. We demonstrate how this view is separated from the entanglement in practice perspective and show that this understanding has far-reaching consequences for developing, managing, and examining information systems.
Theory building is not only underdeveloped in IT services management research, but in
general in IS. Given the paradigm shift that comes from the development away from a
networked economy towards a network economy, the lack of spending enough attention to
theorizing in IS becomes even more obvious. In the light of other "megatrends" in IS
research, such as the increasing professionalization and use of statistical methods and the
exploitation of extremely large sets of data (often harvested from social media sites), we
might lose interest in theorizing in the presence of the tremendous amount of available
empirical data. In this position paper, the author advocates that services science researchers
should focus on rigor and relevance in their research approaches.
Debt-induced crises, including the subprime, are usually attributed exclusively to supply-side factors. We examine the role of social influences on debt culture, emanating from perceived average income of peers. Utilizing unique information from a household survey representative of the Dutch population, that circumvents the issue of defining the social circle, we consider collateralized, consumer, and informal loans. We find robust social effects on borrowing, especially among those who consider themselves poorer than their peers; and on indebtedness, suggesting a link to financial distress. We employ a number of approaches to rule out spurious associations and to handle correlated effects.
In the aftermath of the global financial crisis, the state of macroeconomic modeling and the use of macroeconomic models in policy analysis has come under heavy criticism. Macroeconomists in academia and policy institutions have been blamed for relying too much on a particular class of macroeconomic models. This paper proposes a comparative approach to macroeconomic policy analysis that is open to competing modeling paradigms. Macroeconomic model comparison projects have helped produce some very influential insights such as the Taylor rule. However, they have been infrequent and costly, because they require the input of many teams of researchers and multiple meetings to obtain a limited set of comparative findings. This paper provides a new approach that enables individual researchers to conduct model comparisons easily, frequently, at low cost and on a large scale. Using this approach a model archive is built that includes many well-known empirically estimated models that may be used for quantitative analysis of monetary and fiscal stabilization policies. A computational platform is created that allows straightforward comparisons of models’ implications. Its application is illustrated by comparing different monetary and fiscal policies across selected models. Researchers can easily include new models in the data base and compare the effects of novel extensions to established benchmarks thereby fostering a comparative instead of insular approach to model development.
We investigate the decisions of listed firms to go private once again. We start by revealing that while a significant number of firms which go public is VC-backed, an overproportional share of these VC-backed firms go private later on (they stay on the exchange for an average of 8.5 years). We interpret this very robust pattern such that IPOs of VC-backed firms are to a large extent a temporary rather than a permanent feature of the corporate governance of these firms. We investigate various potential hypotheses why VCs actually seem to be able to bring marginal firms to the exchange by relating the going-private decisions to various characteristics of the IPO market as well as to VC characteristics. We find strong support for the certification ability of VCs: more experienced and reputable VCs are more able to bring marginal firms to public exchanges via an IPOs. These marginal firms backed-by more reputable and experienced VCs are more likely to go private later on. Hence, our analysis suggests that IPOs backed by experienced VCs are most likely to be a temporary rather than the final stage in the life of the portfolio firm. We find no support that reputable VCs underprice their IPO-exits more implying that they have no need to leave more money on the table to take the marginal firms public.
Die vorliegende Arbeit beschäftigt sich mit der zeitstetigen Portfoliooptimierung sowie mit Themen aus dem Bereich des Kreditrisikos. Das Ziel der Portfoliooptimierung ist es, zu einem gegebenen Anfangskapital die bestmöglichen Konsum- und Investmentstrategien zu finden. In dieser Arbeit wird dabei vor allem der Einfluss von Einkommen auf diese Entscheidungen untersucht. Da einerseits jedoch der zukünftige Einkommensstrom vom Zufall bestimmt ist und es andererseits keine Finanzprodukte gibt, die diesen replizieren können, stellt die Einbindung von Einkommen in die Portfoliooptimierung ein großes Problem dar. Es führt dazu, dass die Annahmen eines vollständigen Marktes nicht weiter gelten, so dass die Standardmethoden zur Lösung nicht angewendet werden können. Diese Arbeit analysiert mehrere Ausprägungen dieses Problems und geht auf verschiedene Verfahren zur Lösung ein. Weiterhin untersucht diese Studie den Einfluss des Kreditrisikos einer Firma auf die jeweilige Firmenrendite. Dabei wird vor allem auf eine Anomalie, die bereits umfassend in der Literatur diskutiert wurde, Bezug genommen. Diese Anomalie besagt, dass Firmen mit hohen Ausfallwahrscheinlichkeiten geringere Renditen erwirtschaften als Firmen mit kleineren Ausfallwahrscheinlichkeiten. Eine weitere Frage, die in den Bereich des Kreditrisikos fällt, ist die Frage, inwieweit Modelle dazu in der Lage sind, strukturierte Produkte zu bewerten und abzusichern. Diese Arbeit versucht Antworten darauf zu geben.
This dissertation consists of three essays, which study the implication of financial frictions in business cycles and monetary policy making. The first essay develops a Dynamic Stochastic General Equilibrium (DSGE) model to study how the instability of the banking sector can amplify and propagate business cycles. Model simulations show that in an economic down turn, in addition to credit demand contraction induced by low firm net worth, low bank capital
position can create strong credit supply contraction, and have a quantitatively significant effect on business cycle dynamics. The second essay studies the optimal Taylor-type monetary policy rules based on the model developed in the first chapter and find that with interest rate smoothing, 'leaning against the wind' can significantly dampen the procyclicality of financial distortions, and increase the welfare of the economy. The third chapter examines the role of households frugality in a financial crisis and finds that higher savings by more frugal households provide an important cushion for the fall in private investment funding.
It is the objective of this paper to determine the voting premium for French shares by comparing the values of voting and non-voting shares, and to analyze the value of the voting rights. The study uses data for 25 French companies which had both types of shares outstanding and traded on the stock exchange during the entire period from 1986 to 1996, or for some time during this interval. The average value of the voting premium is 51,35%.
The paper analyzes the reasons for this surprisingly high value by testing different hypotheses based on dividend differences, the revival) of the voting right, capitalization, shareholder structure, and the share of non-voting capital in total equity capital. The regressions show that the shareholder structure strongly influences the value of the voting premium.
A case study of the attempted takeover of Casino by Promodes shows that investors attach a much higher value to the voting right during relevant situations than at other tomes. Both companies involved had, at the time, two types of shares outstanding and listed. Furthermore the paper shows that non-voting shares have never played an important role in equity finance in France since the companies have different alternatives.
In an international cumparison, France is found to have the second highest voting premium, exceeded only by that of Italy. A probable reason is the low quality of the national accounting standards and the low level of minority shareholder protection.
Table of Contents – Cumulative Dissertation Thesis German Summary Summary of Analysis Results for German-Speaking Readers Introductory Paper Introduction and Overview of the Dissertation Paper 1 Vykoukal, Jens / Wolf, Martin / Beck, Roman (2009) Services Grids in Industry: On-Demand Provisioning and Allocation of Grid-based Business Services In: Business & Information Systems Engineering (BISE), 1(2), 177-184 Paper 2 Vykoukal, Jens / Setzer, Michael / Beck, Roman (2008) Grid Architecture for Risk Management: A Case Study in a Financial Institution In: Proceedings of the 12th Pacific Asia Conference on Information Systems (PACIS), Suzhou, China Paper 3 Vykoukal, Jens / Pahlke, Immanuel / Beck, Roman (2011) Impact of Grid Assimilation on Operational Agility in Turbulent Environments: An Empirical Investigation in the Financial Services Industry In: Proceedings of the 19th European Conference on Information Systems (ECIS), Helsinki, Finland Paper 4 Vykoukal, Jens / Wolf, Martin / Beck, Roman (2009) Does Green IT Matter? Analysis of the Relationship between Green IT and Grid Technology from a Resource-based View Perspective In: Proceedings of the 13th Pacific Asia Conference on Information Systems (PACIS), Hyderabad, India Paper 5 Vykoukal, Jens (2010) Grid Technology as Green IT Strategy? Empirical Results from the Financial Services Industry In: Proceedings of the 18th European Conference on Information Systems (ECIS), Pretoria, South Africa Paper 6 Vykoukal, Jens / Beck, Roman / Wolf, Martin (2010) Impact of Pressure for Environmental Sustainability on Grid Assimilation: Empirical Results from the Financial Services Industry In: Australasian Journal of Information Systems (AJIS), 17(1), 83-106 Appendix: Publications, Curriculum Vitae
Online Privacy: Towards Informational Self-Determination on the Internet (Dagstuhl Perspectives Workshop 11061) : Simone Fischer-Hübner, Chris Hoofnagle, Kai Rannenberg, Michael Waidner, Ioannis Krontiris and Michael Marhöfer Self-Repairing Programs (Dagstuhl Seminar 11062) : Mauro Pezzé, Martin C. Rinard, Westley Weimer and Andreas Zeller Theory and Applications of Graph Searching Problems (Dagstuhl Seminar 11071) : Fedor V. Fomin, Pierre Fraigniaud, Stephan Kreutzer and Dimitrios M. Thilikos Combinatorial and Algorithmic Aspects of Sequence Processing (Dagstuhl Seminar 11081) : Maxime Crochemore, Lila Kari, Mehryar Mohri and Dirk Nowotka Packing and Scheduling Algorithms for Information and Communication Services (Dagstuhl Seminar 11091) Klaus Jansen, Claire Mathieu, Hadas Shachnai and Neal E. Young
Based on Foucault’s analysis of German Neoliberalism and his thesis of ambiguity, the following paper draws a two-level distinction between individual and regulatory ethics. The individual ethics level – which has received surprisingly little attention – contains the Christian foundation of values and the liberal-Kantian heritage of so called Ordoliberalism – as one variety of neoliberalism. The regulatory or formal-institutional ethics level on the contrary refers to the ordoliberal framework of a socio-economic order. By differentiating these two levels of ethics incorporated in German Neoliberalism, it is feasible to distinguish dissimilar varieties of neoliberalism and to link Ordoliberalism to modern economic ethics. Furthermore, it allows a revision of the dominant reception of Ordoliberalism which focuses solely on the formal-institutional level while mainly neglecting the individual ethics level.
The Dagstuhl Perspectives Workshop "Online Privacy: Towards Informational Self-Determination on the Internet" (11061) has been held in February 6-11, 2011 at Schloss Dagstuhl. 30 participants from academia, public sector, and industry have identified the current status-of-the-art of and challenges for online privacy as well as derived recommendations for improving online privacy. Whereas the Dagstuhl Manifesto of this workshop concludes the results of the working groups and panel discussions, this article presents the talks of this workshop by their abstracts.
Measuring confidence and uncertainty during the financial crisis: evidence from the CFS survey
(2011)
The CFS survey covers individual situations of banks and other companies of the financial sector during the financial crisis. This provides a rare possibility to analyze appraisals, expectations and forecast errors of the core sector of the recent turmoil. Following standard ways of aggregating individual survey data, we first present and introduce the CFS survey by comparing CFS indicators of confidence and predicted confidence to ifo and ZEW indicators. The major contribution is the analysis of several indicators of uncertainty. In addition to well established concepts, we introduce innovative measures based on the skewness of forecast errors and on the share of ‘no response’ replies. Results show that uncertainty indicators fit quite well with pattern of real and financial time series of the time period 2007 to 2010. Business Sentiment , Financial Crisis , Survey Indicator , Uncertainty CFS working paper series, 2010, 18. Revised Version July 2011
Effort estimates are of utmost economic importance in software development projects. Estimates bridge the gap between managers and the invisible and almost artistic domain of developers. They give a means to managers to track and control projects. Consequently, numerous estimation approaches have been developed over the past decades, starting with Allan Albrecht's Function Point Analysis in the late 1970s. However, this work neither tries to develop just another estimation approach, nor focuses on improving accuracy of existing techniques. Instead of characterizing software development as a technological problem, this work understands software development as a sociological challenge. Consequently, this work focuses on the question, what happens when developers are confronted with estimates representing the major instrument of management control? Do estimates influence developers, or are they unaffected? Is it irrational to expect that developers start to communicate and discuss estimates, conform to them, work strategically, hide progress or delay? This study shows that it is inappropriate to assume an independency of estimated and actual development effort. A theory is developed and tested, that explains how developers and managers influence the relationship between estimated and actual development effort. The theory therefore elaborates the phenomenon of estimation fulfillment.
This dissertation contains three essays on monetary policy, dynamics of the interest rates and spillovers across economies. In the first essay I examine the effects of monetary policy and its interaction with financial regulation within a micro-founded macroeconometric framework for a closed economy with a heterogeneous banking system, facing a period of low interest rates. I analyse the interplay between monetary policy and banking regulation and study the role of agents’ expectations for the effectiveness of unconventional monetary policy tools. In the next essay, I argue that openness is crucial for understanding the dynamics of the term structure. In an empirical application, I show that my model of the term structure fits well the yield curve in-sample and has a sound ability to forecast interest rates out-of-sample. The model accounts for the expectations hypothesis, replicates the forward premium anomaly and reconciles the uncovered interest rate parity implications. The last essay is concerned with the dynamics of co-movement among macroeconomic aggregates and the degree of convergence or decoupling amongst economies. The model includes measures of financial and trade-based interdependencies and incorporates feedback between macroeconomic variables and time-varying weights. The findings point at the importance of asset price movements and financial linkages.
All-over in Europe, unemployment became a growing problem from the mid 1980s to the mid 1990s. Nevertheless, the effects on the economical situation of the unemployed and the whole population are quite different in European countries. In this paper we first give a brief overview over the development of unemployment rates in eight member states of the European Union and over the different reactions to provide the social protection of the unemployed. Therefore we look at the social security expenditures, the level of income replacement for the unemployed and recent social policy reforms concerning them. In the second section of the paper, we examine the development of income distribution and poverty taking different poverty lines into consideration. There is no general pattern neither for the relationship of inequality among the unemployed to the whole economically active population nor for the development from the 80s to the 90s. But one can say that in countries with increasing income inequality also poverty is rising (especially in the UK) and that where inequality among the unemployed is less pronounced the proportions of the poor went down from the mid 80s to the mid 90s (France and Ireland). In nearly all countries the risk of being poor is ernormously high for the unemployed, Denmark is the only exception.
To sum up our findings we come to the following statements. - During the period from 1973 to 1993 inequality of the personal distribution of equivalent pre-government income increased to some extent, as was to be expected given the enormous rise in unemployment. - Inequality of post-government income also increased slightly, but was much lower than inequality of pre-government income due to the equalizing effect of the German tax and transfer system. - In 1993 inequality of pre-government income was higher, and inequality of post-government income was considerably lower in East Germany than in West Germany; the West German tax and transfer system that was transferred to East Germany after reunification - with some additional but temporary minimum regulations - seems to have had a stronger equalizing effect in the East than in the West. - A decomposition into three age groups, the young and the middle-aged group sub-divided further according to whether household members were affected by unemployment, showed that within-groups inequality explained by far more of overall inequality than between-groups inequality. - The relative positions of the two young groups as well as of the middle-aged group with unemployed members deteriorated with respect to their equivalent pre-government and post-government incomes. - During the first period with rising unemployment (1973 to 1978), the development of within-groups inequality and of between-groups inequality contributed to about the same extent to the increase of overall inequality of pre-government income. But this was fully compensated by the tax and transfer system as there were only a negligible change in inequality of equivalent net income and very slight effects of the (four) components of change which nearly compensated each other. - During the last period from 1988 to 1993 the equalizing effect of the German tax and transfer system seems to have weakened, at least in the western part of Germany. The increase in inequality of equivalent net income is mainly due to developments of within group inequalities.
This thesis consists of four chapters. Each chapter covers a topic in international macroeconomics and monetary policy. The first chapter investigates the impact of unexpected monetary policy shocks on exchange rates in a multi-country econometric model. The second chapter examines the linkage between macroeconomic fundamentals and exchange rates through the monetary policy expectation channel. The third chapter focuses on the international transmission of bank and corporate distress. The last chapter unfolds the interest rate channel of monetary policy transmission in-an emerging economy-China, where regulations and market forces co-exist in this transmission.
In total, this dissertation comprises three research papers. Objective of all of these papers are to detect mistakes of private investors when conducting mutual funds investments and to analyze the implications. Moreover, the question is addressed whether financial advisors help private investors to avoid these investment mistakes. All three research papers use the same data base which has been provided by a German online brokerage house. The detailed data set allows contributing to existing literature on mutual fund investments, smart decision making, household finance as well as financial advice on an investor- and transaction-specific level. The first paper addresses the question which particular decision criteria private investors use when purchasing mutual funds. It can be shown that funds volume is the dominating decision criterion, whereas historical performance is only of minor importance. As performance persistence exists in the underlying data set, it can be concluded that the majority of investors make investment mistakes. In the second paper it is shown that smart investors, i.e. investors who purchase mutual funds by chasing historical performance, are older, wealthier, more experienced and less likely to be overconfident. In addition, it can be verified that there exists a positive impact of the ability to select mutual funds by chasing historical performance on the overall investment success. Hence, the quality of mutual fund selection ability is an ex-ante measure for investment success. Finally, the third paper analyzes the influence of financial advice on mutual fund decision making of private investments. Evidence can be provided that financial advisors do not help their customers to purchase mutual funds by chasing historical performance. In fact, advisors recommend high-volume mutual funds from well-known fund families. Apparently, financial advisors are much more salesmen than real advisors. These results hold when controlling for potential endogeneity issues.
The first part of the following paper deals with varying points of criticism forwarded against Ordoliberalism. Here, it is not the aim to directly falsify each argument on its own; rather, the author tries to give a precise overview of the spectrum of critique. The second section picks out one argument of critical review – namely that the ordoliberal concept of the state is somewhat elitist and grounded on intellectual experts. Based on the previous sections, the final part differentiates two kinds of genesis of norms: an evolutionary and an elitist one – both (latently) present within Ordoliberalism. In combination with the two-level differentiation between individual and regulatory ethics, the essay allows for a distinction between individual-ethical norms based on an evolutionary genesis of norms and regulatory-ethical norms based on an elitist understanding of norms. A by-product of the author’s argument is a (further) demarcation within neoliberalism.
We propose a theory characterizing information systems (IS) as language communities which use and develop domain-specific languages for communication. Our theory is anchored in Language Critique, a branch of philosophy of language. In developing our theory, we draw on Systems Theory and Cybernetics as a theoretical framework. "Organization" of a system is directly related to communication of its sub-systems. "Big systems" are self-organizing and the control of this ability is disseminated throughout the system itself. Therefore, the influence on changes of the system from its outside is limited. Operations intended to change an organization are restricted to indirect approaches. The creation of domain-specific languages by the system itself leads to advantageous communication costs compared to colloquial communication at the price of set-up costs for language communities. Furthermore, we demonstrate how our theoretical constructs help to describe and predict the behavior of IS. Finally, we discuss implications of our theory for further research and IS in general. Keywords: Language Critique, language communities, communication, self-organization, IS research
This dissertation introduces in chapter 1 a new comparative approach to model-based research and policy analysis by constructing an archive of business cycle models. It includes many well-known models used in academia and at policy institutions. A computational platform is created that allows straightforward comparisons of models’ implications for monetary and fiscal stabilization policies. Chapter 2 applies business cycle models to forecasting. Several New Keynesian models are estimated on historical U.S. data vintages and forecasts are computed for the five most recent recessions. The extent of forecast heterogeneity for models and professional forecasts is analysed. Chapter 3 extends the forecasting analysis to a long sample and to the evaluation of density forecasts. Weighted forecasts are computed using a variety of weighting schemes. The accuracy of forecasts is evaluated and compared to professional forecasts and forecasts from nonstructural time series methods. Chapter 4 adds a new feature to existing business cycle models. Specifically, a medium-scale New Keynesian model is constructed that allows for strategic complementarities in price-setting. The role of trade integration for monetary policy transmission is explored. A new dimension of the exchange rate channel is highlighted by which monetary policy directly impacts domestic inflation. Chapter 5 tests whether simple symmetric monetary policy rules used in most business cycle models are a sufficient description of reality. I use quantile regressions to estimate policy parameters and find asymmetric reactions to inflation, the output gap and past interest rates.
Revised version of a paper presented at the Conference "The Distribution of Economic Well-Being in the 1980s - an International Perspective", June 21 - 23, 1993, in Fiskebäckskil, Sweden. This paper sketches changes in the distribution of well-being during the period from 1972 to 1991 against the background of West Germany's economic and demographic development, and compares the distribution of well-being in East Germany before and after reunification. We rely on equivalent income of persons as the main indicator to measure well-being, but we also look at the distribution of gross wage income of workers and employees. Estimates of the Federal Statistical Office referring to the mesolevel of average equivalent income of socio-economic groups as well as various distributional measures computed by us at the micro-level are used to gauge changes of the distribution. The computations are based on two sets of micro-data available to us, the official Income and Consumption Surveys (1973, 1978 and 1983), and the German Socio-economic Panel (1983 to 1990 for West Germany, 1990, 1991 for East Germany). At the meso-level we find substantial changes in the relative welfare positions of the ten socio-economic groups distinguished, but a nearly constant ranking of the groups during the whole period under review. At the micro-level our computations indicate slight increases in the inequality of gross earnings during both decades. The distribution of well-being as measured by equivalent income of persons seems also to have become slightly more unequal during the whole period but the changes are very small, and partly reversed during subperiods. A decomposition of overall inequality by occupational status of the heads of household using the Theil measure shows that more than 80 percent of overall inequality is due to within-group inequality with rising tendency. This result is mitigated a little when dis aggregating the heterogeneous group of not gainfully employed with regard to the main income source of the household.
Did earnings inequality in the Federal Republic of Germany increase from the 1960s to the 1980s?
(1996)
This paper aims to provide a descriptive analysis of the changing patterns of labour market participation, non-participation and unemployment in Great Britain, Sweden and Germany. Since the mid 1970s, most European countries have experienced two parallel developments: on the one hand they have witnessed a huge growth in the proportion of women participating on the labour market. On the other however, they have experienced the return of mass unemployment and a growing insecurity of employment for those in work. In this paper, a typology of work histories is constructed using decade periods. Retrospective and panel data from Germany, Britain and Sweden are then used to compare the effects of different employment and welfare regimes on the proportions of respondents with different types of work histories and how these are combined with unemployment.
This paper fits within a broader research programme concerned with the processes that link labour market precarity and social exclusion. Labour market insecurity manifests itself most directly in the form of unemployment, and other elements in the programme seek to measure the impact of precarity, and unemployment in particular, on poverty and social exclusion in the eight countries covered. One of the principal concerns of the programme is however the extent to which institutional differences across countries with respect to the labour market and social protection are a significant factor mediating the relationship between labour market precarity and social exclusion. This paper focuses on the effectiveness of cash transfers, the central element of social protection systems, in alleviating the effects of unemployment on income poverty. The structures of social protection systems vary greatly across European Union member states, and in many cases have altered significantly in recent years in response to high unemployment (see Hauser et al, 1998). Using data from the mid-1980s and the mid-1990s for six member countries, the paper compares the effectiveness of different systems in lifting or keeping the unemployed out of poverty, and how this has been affected by the way systems have responded to the challenges produced by developments in the labour market in the past decade. The specific role of social insurance-based unemployment-linked transfers versus other cash transfers is also considered, to assess the extent to which social insurance has been able to cope with changes in the labour market over the period. The data come from a variety of national large-scale household surveys. The paper is structured as follows. Section 2 discusses the data and methods to be employed in measuring the impact of cash transfers on poverty risks for the unemployed. Section 3 looks at the overall risks of poverty for the unemployed before and after cash transfers, and how these changed between the mid-1980s and mid-1990s. Section 4 looks at the role of social insurance-based unemployment payments versus other cash transfers. Section 5 examines the extent to which the impact of transfers varies by gender and by duration of unemployment. Section 6 highlights the key patterns identified and what these tell us about the relationship between the type of welfare regime a country operates and effectiveness in alleviating poverty among the unemployed.
The structure of the compulsory pension system (CPS) in the Federal Republic of Germany has been changed fundamentally. The federal government has decided to introduce a private pension system on a voluntary basis. The payments to this voluntary system are to constitute a capital stock to supplement the payments of the compulsory pension system. Comprehensive fiscal subsidies will be introduced to support this change to the pension system. This paper discusses the special situation of families with children. The second section investigates the extent to which families with children were able to accumulate private wealth in the last ten years in Germany. In the third section the main features of the intended changes to the compulsory pension system are described, and an overview of the planned fiscal subsidies is provided. In the fourth and final section we attempt to evaluate the changes with particular attention to the situation of families.
This investigation of the wealth of private households as a possible indicator for the prosperity of a society indicated a strong increase in wealth for the Federal Republic of Germany since 1970. This applies both to the macro-economic results of the financial accounting of the Deutsche Bundesbank and to the micro-economic results of the Income and Consumption Surveys of the Federal Statistical Office. However, substantial differences become clear in the content expressed by these two different sets of data. While the financial accounting of the Deutsche Bundesbank shows an increase of net assets of around 808 per cent over 27 years (from 1.3 trillion DM in the year 1970 to 12.1 trillion DM in 1997), calculations on the basis of the Income and Consumption Surveys yield a corresponding value of only 280 per cent in a 25-year period, with a substantially lower overall magnitude in later investigations (from 2.2 trillion DM in 1973 to only 8.3 trillion DM in 1998). Investigation of the EVS data pointed out the great importance of property for the wealth situation of private households. However, not every household has property in the form of housing and real estate. In West Germany, ownership rates have increased substantially since 1962. However, since 1993 these rates have stagnated at about 50 per cent. The analysis of the distribution of wealth for West German households yielded a decline in the concentration of wealth in the period from 1973 to 1993, both in terms of the shares of total wealth held by individual quintiles of households, and as expressed by the Gini coefficients. However, this trend did not continue in the years between 1993 and 1998. For the year 1998 it can be determined that the lowest 40 per cent of households in West Germany had practically no wealth, while the highest quintile claimed over 60 per cent of total assets. For East Germany, strong tendencies are established toward adapting to the values in the West German Länder. This concerns first the absolute level of net assets, even though in 1998 these amounted to just 38 per cent of the analogous value in West German households, in terms of the average value per household. Similarly, the ownership rates of housing and real estate also rose dramatically after reunification. The inequality of the distribution of wealth in East Germany was reduced somewhat by this broader basis of real-estate ownership over the course of time, such that the Gini coefficient decreased slightly in the period from 1993 to 1998. However, it is also true for the new Länder in the Federal Republic that the lowest 40 per cent of households have practically no wealth, while the highest quintile of East German households claim over 70 per cent of total assets, even higher than its share in West Germany. Furthermore, the distribution of wealth is remarkably congruous in East and West Germany. Both the distribution of wealth as expressed by the quintile values and the results of the Gini coefficients yield similar results, whereby the trend in both regions is toward convergence. The similarity of these results must be regarded as nothing less than amazing, considering that the two regions followed different economic models for over forty years: the social free-market economy (Soziale Marktwirtschaft) in the Federal Republic of Germany, and the socialist planned economy (Sozialistische Planwirtschaft) in the German Democratic Republic.
Measuring confidence and uncertainty during the financial crisis : evidence from the CFS survey
(2010)
The CFS survey covers individual situations of banks and other companies of the financial sector during the financial crisis. This provides a rare possibility to analyze appraisals, expectations and forecast errors of the core sector of the recent turmoil. Following standard ways of aggregating individual survey data, we first present and introduce the CFS survey by comparing CFS indicators of confidence and predicted confidence to ifo and ZEW indicators. The major contribution is the analysis of several indicators of uncertainty. In addition to well established concepts, we introduce innovative measures based on the skewness of forecast errors and on the share of ‘no response’ replies. Results show that uncertainty indicators fit quite well with pattern of real and financial time series of the time period 2007 to 2010. Business Sentiment , Financial Crisis , Survey Indicator , Uncertainty
This paper provides theory as well as empirical results for pre-averaging estimators of the daily quadratic variation of asset prices. We derive jump robust inference for pre-averaging estimators, corresponding feasible central limit theorems and an explicit test on serial dependence in microstructure noise. Using transaction data of different stocks traded at the NYSE, we analyze the estimators’ sensitivity to the choice of the pre-averaging bandwidth and suggest an optimal interval length. Moreover, we investigate the dependence of pre-averaging based inference on the sampling scheme, the sampling frequency, microstructure noise properties as well as the occurrence of jumps. As a result of a detailed empirical study we provide guidance for optimal implementation of pre-averaging estimators and discuss potential pitfalls in practice. Quadratic Variation , MarketMicrostructure Noise , Pre-averaging , Sampling Schemes , Jumps
Recent evaluations of the fiscal stimulus packages recently enacted in the United States and Europe such as Cogan, Cwik, Taylor and Wieland (2009) and Cwik and Wieland (2009) suggest that the GDP effects will be modest due to crowding-out of private consumption and investment. Corsetti, Meier and Mueller (2009a,b) argue that spending shocks are typically followed by consolidations with substantive spending cuts, which enhance the short-run stimulus effect. This note investigates the implications of this argument for the estimated impact of recent stimulus packages and the case for discretionary fiscal policy.