Refine
Year of publication
Document Type
- Article (30432)
- Part of Periodical (11868)
- Book (8231)
- Doctoral Thesis (5576)
- Part of a Book (3869)
- Working Paper (3370)
- Review (2918)
- Contribution to a Periodical (2278)
- Preprint (1803)
- Report (1561)
Language
- German (42673)
- English (28340)
- French (1071)
- Portuguese (843)
- Multiple languages (310)
- Spanish (309)
- Croatian (302)
- Italian (196)
- mis (174)
- Turkish (168)
Keywords
- Deutsch (1082)
- Literatur (862)
- taxonomy (737)
- Deutschland (551)
- Rezension (511)
- new species (437)
- Rezeption (349)
- Frankfurt <Main> / Universität (341)
- Übersetzung (311)
- Geschichte (300)
Institute
- Medizin (7329)
- Präsidium (5082)
- Physik (4109)
- Extern (2742)
- Wirtschaftswissenschaften (2656)
- Gesellschaftswissenschaften (2366)
- Biowissenschaften (2101)
- Biochemie und Chemie (1940)
- Center for Financial Studies (CFS) (1608)
- Informatik (1576)
A short while ago, an interested reader inquired about one of my articles on the topic of jihad and terrorism. I am thankful for the inspiring question. The reader asked me to clarify why there seems to be no difference between terrorism and jihad nowadays, and why this boundary has disappeared in debates by many people in the social media and in other places...
Was zwar schon länger vermutet, jedoch bislang nie nachgewiesen werden konnte, ist nun Gewissheit! Die jüngste Expedition einer Gruppe Studierender im Jahr 2006 unter Leitung von Professor Hans-Heiner Bergmann (Universität Osnabrück) brachte es ans Tageslicht. In der Sarmaschlucht westlich des Baikal im russischen Sibirien kommt eine bisher unbekannte endemische Art aus der Ordnung der Sperlingsvögel (Passeriformes) vor, der Sarmensische Steppenschwirl (Locustella sarmensis, Bergmann 2006).
Forging new paths – the Bundesbank’s transformation journey : interview with Karmela Holtgreve
(2023)
Iinterview with Karmela Holtgreve [Director General Strategy and Innovation, Deutsche Bundesbank]
In der Tropenwelt
(1912)
How much additional tax revenue can the government generate by increasing labor income taxes? In this paper we provide a quantitative answer to this question, and study the importance of the progressivity of the tax schedule for the ability of the government to generate tax revenues. We develop a rich overlapping generations model featuring an explicit family structure, extensive and intensive margins of labor supply, endogenous accumulation of labor market experience as well as standard intertemporal consumption-savings choices in the presence of uninsurable idiosyncratic labor productivity risk. We calibrate the model to US macro, micro and tax data and characterize the labor income tax Laffer curve under the current choice of the progressivity of the labor income tax code as well as when varying progressivity. We find that more progressive labor income taxes significantly reduce tax revenues. For the US, converting to a flat tax code raises the peak of the Laffer curve by 6%, whereas converting to a tax system with progressivity similar to Denmark would lower the peak by 7%. We also show that, relative to a representative agent economy tax revenues are less sensitive to the progressivity of the tax code in our economy. This finding is due to the fact that labor supply of two earner households is less elastic (along the intensive margin) and the endogenous accumulation of labor market experience makes labor supply of females less elastic (around the extensive margin) to changes in tax progressivity.
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
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.
Dem vorliegenden Buch liegt die erkenntnisleitende Annahme zugrunde, dass der ebenso komplexe wie hybride Gegenstandsbereich „E-Learning“ keiner akademischen Fachkultur exklusiv zurechenbar ist oder ihr gar „allein gehört“. Aus diesem Umstand wird gewöhnlich die Notwendigkeit eines stärker inter- und multidisziplinär ausgerichteten Forschens und Arbeitens an den Hochschulen abgeleitet. Doch trotz schlüssiger Begründung der Notwendigkeit, den Blick über den Tellerrand der eigenen Disziplin zu richten und die Kooperation mit Vertretern anderer Fachkulturen zu verstärken, scheinen beim Thema E-Learning die Grenzen zwischen den Disziplinen besonders undurchlässig zu sein. So kommt es, dass die vielfach beschworenen Synergieeffekte im Prozess des wissenschaftlichen Forschens eher die Ausnahme als die Regel darstellen. In der Tat sollte man sich vor diesbezüglichen Illusionen hüten. Denn der Weg zu einer konstruktiven interdisziplinären Forschungs- und Gesprächskultur dürfte noch sehr weit sein, und es ist keineswegs absehbar, ob die damit verbundenen Erwartungen und Hoffnungen sich tatsächlich jemals erfüllen werden...
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.