Universitätspublikationen
Refine
Year of publication
- 2011 (1240) (remove)
Document Type
- Article (444)
- Doctoral Thesis (210)
- Part of Periodical (139)
- Book (131)
- Report (75)
- Working Paper (73)
- Conference Proceeding (66)
- Review (34)
- Bachelor Thesis (18)
- Part of a Book (10)
Language
- German (655)
- English (566)
- Portuguese (8)
- Spanish (4)
- Multiple languages (3)
- French (2)
- Italian (1)
- Norwegian Bokmål (1)
Keywords
- Wikileaks (12)
- Deutschland (10)
- Workshop (6)
- Leaking (5)
- Axel Honneth (4)
- Europäische Währungsunion (4)
- Frankfurt <Main> / Universität (4)
- Geheimnisverrat (4)
- USA (4)
- teoria crítica (4)
Institute
- Medizin (201)
- Präsidium (140)
- Physik (111)
- Gesellschaftswissenschaften (96)
- Biochemie und Chemie (89)
- Biowissenschaften (67)
- Wirtschaftswissenschaften (59)
- Exzellenzcluster Die Herausbildung normativer Ordnungen (56)
- Center for Financial Studies (CFS) (54)
- Geowissenschaften (52)
- Geschichtswissenschaften (50)
- Pharmazie (35)
- Frankfurt Institute for Advanced Studies (FIAS) (32)
- House of Finance (HoF) (32)
- Informatik (31)
- Rechtswissenschaft (31)
- Psychologie (30)
- Kulturwissenschaften (28)
- E-Finance Lab e.V. (27)
- Institut für Ökologie, Evolution und Diversität (27)
- Philosophie (25)
- Sustainable Architecture for Finance in Europe (SAFE) (25)
- Mathematik (22)
- Universitätsbibliothek (15)
- Erziehungswissenschaften (14)
- Geographie (14)
- Institut für Sozialforschung (IFS) (14)
- Senckenbergische Naturforschende Gesellschaft (14)
- Institut für Wirtschaft, Arbeit, und Kultur (IWAK) (13)
- Neuere Philologien (13)
- Institut für sozial-ökologische Forschung (ISOE) (11)
- Sprachwissenschaften (11)
- Fachübergreifend (10)
- Biodiversität und Klima Forschungszentrum (BiK-F) (9)
- Evangelische Theologie (9)
- Institute for Law and Finance (ILF) (9)
- Sportwissenschaften (9)
- Zentrum für Arzneimittelforschung, Entwicklung und Sicherheit (ZAFES) (9)
- Georg-Speyer-Haus (8)
- Institute for Monetary and Financial Stability (IMFS) (8)
- Exzellenzcluster Makromolekulare Komplexe (6)
- Interdisziplinäres Zentrum für Ostasienstudien (IZO) (6)
- Katholische Theologie (5)
- Sonderforschungsbereiche / Forschungskollegs (4)
- Zentrum für Biomolekulare Magnetische Resonanz (BMRZ) (4)
- Biochemie, Chemie und Pharmazie (2)
- Cornelia Goethe Centrum für Frauenstudien und die Erforschung der Geschlechterverhältnisse (CGC) (2)
- Extern (2)
- Frobenius Institut (2)
- Gleichstellungsbüro (2)
- Hessische Stiftung für Friedens- und Konfliktforschung (HSFK) (2)
- Zentrum für Interdisziplinäre Afrikaforschung (ZIAF) (2)
- Akademie für Bildungsforschung und Lehrerbildung (bisher: Zentrum für Lehrerbildung und Schul- und Unterrichtsforschung) (1)
- Center for Scientific Computing (CSC) (1)
- Centre for Drug Research (1)
- Europäische Akademie der Arbeit in der Universität Frankfurt am Main (1)
- Goethe-Zentrum für Wissenschaftliches Rechnen (G-CSC) (1)
- Institut für Religionsphilosophische Forschung (1)
- LOEWE-Schwerpunkt Außergerichtliche und gerichtliche Konfliktlösung (1)
- MPI für Biophysik (1)
- MPI für Hirnforschung (1)
- Sprach- und Kulturwissenschaften (1)
- Starker Start ins Studium: Qualitätspakt Lehre (1)
- Zentrale Einrichtung (1)
- Zentrum für Weiterbildung (1)
We derive the equations of second order dissipative fluid dynamics from the relativistic Boltzmann equation following the method of W. Israel and J. M. Stewart [1]. We present a frame independent calculation of all first- and second-order terms and their coefficients using a linearised collision integral. Therefore, we restore all terms that were previously neglected in the original papers of W. Israel and J. M. Stewart.
We present results on Hanbury Brown-Twiss (HBT) radii extracted from the Ultra-relativistic Molecular Dynamics (UrQMD) approach to relativistic heavy ion collisions. The present investigation provides a comparison of results from pure hadronic transport calculations to a Boltzmann + Hydrodynamic hybrid approach with an intermediate hydrodynamic phase. For the hydrodynamic phase different Equations of State (EoS) have been employed, i.e. bag model, hadron resonance gas and a chiral EoS. The influence of various freeze-out scenarios has been investigated and shown to be negligible if hadronic rescatterings after the hydrodynamic evolution are included. Furthermore, first results of the source tilt from azimuthal sensitive HBT and the direct extraction from the transport model are presented and exhibit a very good agreement with E895 data at AGS.
A mechanism for locally density-dependent dynamic parton rearrangement and fusion has been implemented into the Ultrarelativistic Quantum Molecular Dynamics (UrQMD) approach. The same mechanism has been previously built in the Quark Gluon String Model (QGSM). This rearrangement and fusion approach based on parton coalescence ideas enables the description of multi-particle interactions, namely 3 -> 3 and 3 -> 2, between (pre)hadronic states in addition to standard binary interactions. The UrQMD model (v2.3) extended by these additional processes allows to investigate implications of multi-particle interactions on the reaction dynamics of ultrarelativistic heavy ion collisions. The mechanism, its implementation and first results of this investigation are presented and discussed.
We present the current status of hybrid approaches to describe heavy ion collisions and their future challenges and perspectives. First we present a hybrid model combining a Boltzmann transport model of hadronic degrees of freedom in the initial and final state with an optional hydrodynamic evolution during the dense and hot phase. Second, we present a recent extension of the hydrodynamical model to include fluctuations near the phase transition by coupling a chiral field to the hydrodynamic evolution.
Fast thermalization and a strong build up of elliptic flow of QCD matter were investigated within the pQCD based 3+1 dimensional parton transport model BAMPS including bremsstrahlung 2 <-> 3 processes. Within the same framework quenching of gluonic jets in Au+Au collisions at RHIC can be understood. The development of conical structure by gluonic jets is investigated in a static box for the regimes of small and large dissipation. Furthermore we demonstrate two different approaches to extract the shear viscosity coefficient n from a microscopical picture.
We study the kinetic and chemical equilibration in 'infinite' parton-hadron matter within the Parton-Hadron-String Dynamics transport approach, which is based on a dynamical quasiparticle model for partons matched to reproduce lattice-QCD results – including the partonic equation of state – in thermodynamic equilibrium. The 'infinite' matter is simulated within a cubic box with periodic boundary conditions initialized at different baryon density (or chemical potential) and energy density. The transition from initially pure partonic matter to hadronic degrees of freedom (or vice versa) occurs dynamically by interactions. Different thermody-namical distributions of the strongly-interacting quark-gluon plasma (sQGP) are addressed and discussed.
Prepared by Christian Laux, Vienna University of Economics and Business & Center for Financial Studies (CFS) for the “Workshop on Liquidity Premium in Solvency II: Conceptual and Measurement Issues,” DNB Amsterdam, March 18, 2011. The insurance industry and the Committee of European Insurance and Occupational Pension Supervisors (CEIOPS) propose to add a liquidity premium to the risk-free rate when discounting liabilities in times of financial turmoil. The objective is to counterbalance adverse effects on regulatory capital due to a decrease in asset values caused by illiquidity in a crisis. As I argue in this note, although the motive might be sensible, the proposal to add a liquidity premium when discounting liabilities is not the right approach to tackle the problem.
The aim of this paper is to examine what has been the role of information provision to the market throughout the crisis. We consider two main sources of information to the market, financial statements and information provided by credit rating agencies. We examine how these sources of information work and the effectiveness of their disclosure process during the crisis. Contrary to the commonly held view, fair value accounting did not have a major impact on the crisis development and severity. However, the structure and lack of accountability of credit rating agencies had a profound impact on their incentives, which may have jeopardized the accuracy of the whole rating process. We claim that the crisis experience has changed the way we think about information as well as market discipline and discuss policy implications and proposals for regulation. JEL Classification: G01, G24, G28, M41, M48
In this paper we challenge the view that corporate bonds are always arm’s length debt. We analyze the effect of bond ratings on the stock price return to acquirers in M&A transactions, which tend to have significant effects on creditor wealth. We find acquirers abnormal returns to be higher if they are unrated, controlling for a wide variety of other effects identified in the literature. Tracing the difference in returns to distinct managerial decisions, we find that, everything else constant, rated firms increase their leverage in takeover transactions by less than their unrated counterparts. Consistent with a significant role for rating agencies, we find monitoring effects to be strongest when acquirer bonds are rated at the borderline between investment grade and junk. Finally, we are able to empirically exclude a large number of alternative explanations for the empirical regularities that we uncover. JEL Classification: G21, G24, G32, G34 Keywords: Acquisitions, Credit Ratings, Mergers and Acquisitions, Arm’s Length Debt, Abnormal Returns
Heavy quark and charmonium production as well as their space-time evolution are studied in transport simulations of heavy-ion collisions at RHIC and LHC. In the partonic transport model Boltzmann Approach of MultiParton Scatterings (BAMPS) heavy quarks can be produced in initial hard parton scatterings or during the evolution of the quark-gluon plasma. Subsequently, they interact with the medium via binary scatterings with a running coupling and a more precise Debye screening which is derived from hard thermal loop calculations, participate in the flow and lose energy. We present results of the elliptic flow and nuclear modification factor of heavy quarks and compare them to available data. Furthermore, preliminary results on J/psi suppression at forward and mid-rapidity are reported for central and non-central collisions at RHIC. For this, we study cold nuclear matter effects and the dissociation as well as regeneration of J/psi in the quark-gluon plasma. XLIX International Winter Meeting on Nuclear Physics 24-28 January 2011 BORMIO, Italy
It has become commonplace to say that, in the past, international governance has been legitimated mainly, if not exclusively, by its welfare-enhancing ‘output’. There has been very little research, however, on the history of legitimating international governance by its output to validate this point. In this essay I begin to address this gap by inquiring into the origins of output-oriented strategies for legitimating international organizations. Scrutinizing the programmatic literature on international organizations from the early 20th century, I illustrate how a new and distinctive account of technocratic legitimation emerged and in the 1920s separated from other types of liberal internationalism. My inquiry, centring on the works of James Arthur Salter, David Mitrany, Paul S. Reinsch and Pitman B. Potter, explores their respective conceptions of ‘good functional governance’, executed by a non-political international technocracy. Their account is explicitly pitched against a notion of ‘international politics’, perceived as violent, polarizing, and irrational. The emergence of such a technocratic legitimation of international governance, I submit, needs to be seen in the context of societal modernization and bureaucratization that unfolded in the first half of the 20th century. I also highlight how in this account the material output of governance is intimately linked to the virtues of the organizational form that brings it about.
TIM23-mediated insertion of transmembrane alpha-helices into the mitochondrial inner membrane
(2011)
While overall hydrophobicity is generally recognized as the main characteristic of transmembrane (TM) alpha-helices, the only membrane system for which there are detailed quantitative data on how different amino acids contribute to the overall efficiency of membrane insertion is the endoplasmic reticulum (ER) of eukaryotic cells. Here, we provide comparable data for TIM23-mediated membrane protein insertion into the inner mitochondrial membrane of yeast cells. We find that hydrophobicity and the location of polar and aromatic residues are strong determinants of membrane insertion. These results parallel what has been found previously for the ER. However, we see striking differences between the effects elicited by charged residues flanking the TM segments when comparing the mitochondrial inner membrane and the ER, pointing to an unanticipated difference between the two insertion systems. Keywords: CoxVa , membrane protein , Mgm1p , mitochondria , TIM23