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Das Wogeo ist eine austronesische Sprache, die von etwa 1500 Menschen auf den Inseln Vokeo […] und Koil […] gesprochen wird. Da es sich beim Wogeo um eine bislang größtenteils unbeschriebene Sprache handelt, sind zum Verständnis der Ausführungen im Hauptteil dieser Arbeit sowie zur allgemeinen Orientierung einige einleitende Erklärungen nötig. Diese sind von unterschiedlicher Art: Zunächst wird die natürliche Umgebung der beiden Inseln, auf denen die Sprache gesprochen wird, kurz dargestellt. Dann werden die für das Verständnis der soziolinguistischen Lage der Sprache relevanten Aspekte beleuchtet. Zur Orientierung folgt ein kurzer Abriß der Position des Wogeo innerhalb der austronesischen Sprachfamilie. Schließlich leitet eine Darstellung des bisherigen Forschungsstandes über das Wogeo zum Hauptteil der Arbeit über.
We investigate a restricted one-way cellular automaton (OCA) model where the number of cells is bounded by a constant number k, so-called kC-OCAs. In contrast to the general model, the generative capacity of the restricted model is reduced to the set of regular languages. A kC-OCA can be algorithmically converted to a deterministic finite automaton (DFA). The blow-up in the number of states is bounded by a polynomial of degree k. We can exhibit a family of unary languages which shows that this upper bound is tight in order of magnitude. We then study upper and lower bounds for the trade-off when converting DFAs to kC-OCAs. We show that there are regular languages where the use of kC-OCAs cannot reduce the number of states when compared to DFAs. We then investigate trade-offs between kC-OCAs with different numbers of cells and finally treat the problem of minimizing a given kC-OCA.
The effect of adding two-way communication to k cells one-way cellular automata (kC-OCAs) on their size of description is studied. kC-OCAs are a parallel model for the regular languages that consists of an array of k identical deterministic finite automata (DFAs), called cells, operating in parallel. Each cell gets information from its right neighbor only. In this paper, two models with different amounts of two-way communication are investigated. Both models always achieve quadratic savings when compared to DFAs. When compared to a one-way cellular model, the result is that minimum two-way communication can achieve at most quadratic savings whereas maximum two-way communication may provide savings bounded by a polynomial of degree k.
The descriptional complexity of iterative arrays (lAs) is studied. Iterative arrays are a parallel computational model with a sequential processing of the input. It is shown that lAs when compared to deterministic finite automata or pushdown automata may provide savings in size which are not bounded by any recursive function, so-called non-recursive trade-offs. Additional non-recursive trade-offs are proven to exist between lAs working in linear time and lAs working in real time. Furthermore, the descriptional complexity of lAs is compared with cellular automata (CAs) and non-recursive trade-offs are proven between two restricted classes. Finally, it is shown that many decidability questions for lAs are undecidable and not semidecidable.
Betrachtet man als Sprecher oder Sprecherin des Deutschen die mit '-su' derivierten Verben im Aymara und ihre spanischen Übersetzungen, so fällt auf, daß diese Verben häufig eine Entsprechung in einem deutschen Partikelverb mit 'aus-/heraus-' oder 'auf-' haben, und zwar nicht nur dann, wenn sie Bewegungsvorgänge bezeichnen, sondern auch, wenn keine Direktionalität erkennbar ist. [...] Diese Parallele zwischen '-su' und 'aus-' oder 'auf-' ist frappierend, wenn man bedenkt, dass die beiden Sprachen keinerlei genetische Beziehung haben, und die Annahme liegt nahe, daß hier ein ähnliches kognitives Konzept zugrundeliegt. Um dies genauer beurteilen zu können, ist allerdings mehr Information über '-su' im Aymara nötig. So habe ich mir für die vorliegende Arbeit zum Ziel gesetzt, die Semantik von '-su' im Aymara genauer herauszufinden und herauszuarbeiten, welche Funktionen das Suffix hat. Dabei interessierte mich zum einen, ob sich neben den in den Aymara-Grammatiken beschriebenen Funktionen des Morphems, nämlich der Markierung der Richtung 'nach außen' und des kompletiven Aspekts, noch weitere Funktionen herausarbeiten lassen und wie diese mit der Semantik der jeweiligen Verbwurzel interagieren. Daneben widmete ich mich der Fragestellung, worin der Zusammenhang zwischen den verschiedenen Funktionen des Morphems bestehen könnte.
Most systematic discussion of dyad morphemes has focussed on Australian languages, owing to a combination of their relative prevalence there, and the development of a descriptive tradition that investigates them in some depth. In the course of researching this paper, however, I became aware of functionally and semantically similar morphemes in many other parts of the world, almost invariably described in isolation from any typological reference point. I have incorporated such data as far as I am aware of it, in the hope that a systematic study will encourage other investigators to identify, and investigate in detail, similar constructions in a range of languages. The current state of our research, however, as well as some interesting geographical skewings that I discuss below, such that outside Australia dyad constructions almost exclusively employ reciprocal morphology, means that most of this paper will focus on Australian languages.
Methoden der Filmauswertung
(2003)
Liturgische Filmnächte
(2003)
Mord-Geschichten
(2003)
What constitutes a financial system in general and the German financial system in particular?
(2003)
This paper is one of the two introductory chapters of the book "The German Financial System". It first discusses two issues that have a general bearing on the entire book, and then provides a broad overview of the German financial system. The first general issue is that of clarifying what we mean by the key term "financial system" and, based on this definition, of showing why the financial system of a country is important and what it might be important for. Obviously, a definition of its subject matter and an explanation of its importance are required at the outset of any book. As we will explain in Section II, we use the term "financial system" in a broad sense which sets it clearly apart from the narrower concept of the "financial sector". The second general issue is that of how financial systems are described and analysed. Obviously, the definition of the object of analysis and the method by which the object is to be analysed are closely related to one another. The remainder of the paper provides a general overview of the German financial system. In addition, it is intended to provide a first indication of how the elements of the German financial system are related to each other, and thus to support our claim from Section II that there is indeed some merit in emphasising the systemic features of financial systems in general and of the German financial system in particular. The chapter concludes by briefly comparing the general characteristics of the German financial system with those of the financial systems of other advanced industrial countries, and taking a brief look at recent developments which might undermine the "systemic" character of the German financial system.
This paper investigates the magnitude and the main determinants of share price reactions to buy-back announcements of German corporations. Based on a sample of 224 announcements from the period May 1998 to April 2003 we find average cumulative abnormal returns around -7.5% for the thirty days preceding the announcement and around +7.0 % for the ten days following the announcement. We regress postannouncement abnormal returns with multiple firm characteristics and provide evidence which supports the undervaluation signaling hypothesis but not the excess cash hypothesis. In extending prior empirical work, we also analyze price effects from an initial statement by management that it intends to seek shareholder approval for a buy-back plan. Observed cumulative abnormal returns on this initial date are in excess of 5% implying a total average price effect between 12% and 15% from implementing a buy-back plan. We conjecture that the German regulatory environment is the main reason why market variations to buy-back announcements are much stronger in Germany than in other countries and conclude that initial statements by managers to seek shareholders’ approval for a buy-back plan should also be subject to legal ad-hoc disclosure requirements. EFM classification: 330, 350
Capital rationing is an empirically well-documented phenomenon. This constraint requires managers to make investment decisions between mutually exclusive investment opportunities. In a multiperiod agency setting, this paper analyses accounting rules that provide managerial incentives for efficient project selection. In order to motivate a shortsighted manager to expend unobservable effort and to make efficient investment decisions, the principal sets up an incentive scheme based on residual income (e.g. EVATM). The paper shows that income smoothing generates a trade-off between agency costs resulting from differences in discount rates and the costs associated with the "congruity" of residual earnings.
An economy in which deposit-taking banks of a Diamond/ Dybvig style and an asset market coexist is modelled. Firstly, within this framework we characterize distinct financial systems depending on the fraction of households with direct investment opportunities that are less efficient than those available to banks. With this fraction comparatively low, the evolving financial system can be interpreted as market-oriented. In this system, banks only provide efficient investment opportunities to households with inferior investment alternatives. Banks are not active in the secondary financial market nor do they provide any liquidity insurance to their depositors. Households participate to a large extent in the primary as well as in the secondary financial markets. In the other case of a relatively high fraction of households with inefficient direct investment opportunities, a bank-dominated financial system arises, in which banks provide liquidity transformation, are active in secondary financial markets and are the only player in primary markets, while households only participate in secondary financial markets. Secondly, we analyze the effect a run on a single bank has on the entire financial system. Interestingly, we can show that a bank run on a single bank causes contagion via the financial market neither in market-oriented nor in extremely bank-dominated financial systems. But in only moderately bank-dominated (or hybrid) financial systems fire sales of long-term financial claims by a distressed bank cause a sudden drop in asset prices that precipitates other banks into crisis.
Open source projects produce goods or standards that do not allow for the appropriation of private returns by those who contribute to their production. In this paper we analyze why programmers will nevertheless invest their time and effort to code open source software. We argue that the particular way in which open source projects are managed and especially how contributions are attributed to individual agents, allows the best programmers to create a signal that more mediocre programmers cannot achieve. Through setting themselves apart they can turn this signal into monetary rewards that correspond to their superior capabilities. With this incentive they will forgo the immediate rewards they could earn in software companies producing proprietary software by restricting the access to the source code of their product. Whenever institutional arrangements are in place that enable the acquisition of such a signal and the subsequent substitution into monetary rewards, the contribution to open source projects and the resulting public good is a feasible outcome that can be explained by standard economic theory.
Under a new Basel capital accord, bank regulators might use quantitative measures when evaluating the eligibility of internal credit rating systems for the internal ratings based approach. Based on data from Deutsche Bundesbank and using a simulation approach, we find that it is possible to identify strongly inferior rating systems out-of time based on statistics that measure either the quality of ranking borrowers from good to bad, or the quality of individual default probability forecasts. Banks do not significantly improve system quality if they use credit scores instead of ratings, or logistic regression default probability estimates instead of historical data. Banks that are not able to discriminate between high- and low-risk borrowers increase their average capital requirements due to the concavity of the capital requirements function.