Stefan Weber

Publication List Details

Period

1969 - 2009

Number

149

Co-Authors

Primitive-Based Movement Classification for Humanoid Imitation (2009)

Odest Chadwicke Jenkins, Maja J Matarić, Stefan Weber

Abstract. Motor control is a complex problem and imitation is a powerful mechanism for acquiring new motor skills. In this paper, we describe perceptuo-motor primitives, a biologically-inspired...

A Porcine Liver Model for Validation of Registration Accuracy in Image-Guided Surgery (2009)

Peterhans, Matthias, Dagon, Benoît, Berg, Anne Vom, Inderbitzin, Daniel, Baur, Charles, Weber, Stefan, ...

Correct registration between pre-operative high-resolution images and intra-operative data of lower detail is a fundamental requirement in image-guided liver surgery. We propose a multi modality...

Discrete Tomography by Convex-Concave Regularization using Linear and Quadratic Optimization (2009)

Weber, Stefan

Discrete tomography concerns the reconstruction of objects that are made up from a few different materials, each of which comprising a homogeneous density distribution. Under the assumption that...

Kaffemik: Supporting a distributed JVM on a single address space architecture (2008)

Johan Andersson, Stefan Weber, Emmanuel Cecchet, Christian Jensen

Java is increasingly used to develop large server applications. In order to provide powerful platforms for such applications a number of projects have proposed Java Virtual Machines (JVMs) that are...

Distributed Systems Group, Department of Computer Science, (2008)

Peter Barron, Stefan Weber, Siobhán Clarke, Vinny Cahill, Trinity College

Studies of mobile ad-hoc networks are in the most part restricted to simulations and theory. They have, to this point, rarely ventured into the real world on a large enough scale to make significant...

Time parameters and Lorentz transformations of relativistic stochastic processes (2008)

Dunkel, Jörn, Hänggi, Peter, Weber, Stefan

Rules for the transformation of time parameters in relativistic Langevin equations are derived and discussed. In particular, it is shown that, if a coordinate-time parameterized process approaches...

Lycaon: A Flexible Framework for the Evaluation of Protocols and Services in Ad hoc Networks (2008)

Pablo Marti, Stefan Weber

Current research into solutions for mobile ad-hoc networks (MANETs) has produced an abundance of protocols, applications and services. The performance of these solutions depends on a variety of...

Introduction (2008)

Johan Andersson, Stefan Weber, Emmanuel Cecchet, Christian Jensen, Vinny Cahill

A distributed JVM featuring a single address space architecture

Binary Tomography with Deblurring (2008)

Stefan Weber, Attila Kuba, Christoph Schnörr

www.siemensmedical.com Abstract. We study two scenarios of limited-angle binary tomography with data distorted with an unknown convolution: Either the projection data are taken from a blurred object,...

The Managed Motorway: Real-time Vehicle Scheduling- A Research Agenda- ABSTRACT (2008)

Vinny Cahill, Stefan Weber

Air pollution, traffic congestion, stress and accidents are common features of today’s road transportation experience. New approaches to improving the efficiency and safety of transportation...

The MAINZ ROLLING BRAINS in RoboCup '98: A Direct Approach to Robot Soccer (2007)

Daniel Polani, Stefan Weber, Thomas Uthmann

In the team described in this paper we realize a direct approach to soccer agents for the simulation league of the RoboCup '98-tournament. Its backbone is formed by a detailed world model. Based...

1 (2007)

Agnes E. Ostafin, Stefan Weber

Quinone exchange at the A site in Photosystem I in spinach and

Magnetic Resonance Studies and Molecular Orbital Calculations on the Doublet and Triplet States of Bacteriopurpurin: a Potential Second-Generation Photosensitizer for (2007)

Photodynamic Therapy Christopher, Fosca Conti, Michael Fuhs, Martin Plato, Stefan Weber, ...

e triplet-state electronic structure of the ground-state trans-configured bacteriopurpurin is characterized by the determination of the zero-field splitting parameters which represent sensitive...

A Simulation Environment for Continuous (2007)

Gunter Bruns, Peter Mossinger, Daniel Polani, Ralf Schmitt, Rene Spalt, ...

Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.2.1 The Class Coord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 5.2.2 The Abstract Class...

Substrate Binding to DNA Photolyase Studied by Electron Paramagnetic (2007)

Resonance Spectroscopy Stefan, Stefan Weber, Gerald Richter, Erik Schleicher, Adelbert Bacher, Klaus Möbius, ...

Structural changes in Escherichia coli DNA photolyase induced by binding of a (cis,syn)-cyclobutane pyrimidine dimer (CPD) are studied by continuous-wave electron paramagnetic resonance and...

Inducibility of the endogenous antibiotic peptide β-defensin 2 is impaired in patients with severe sepsis (2007)

Book, Malte, Chen, QiXing, Lehmann, Lutz E, Klaschik, Sven, Weber, Stefan, Schewe, Jens-Christian, ...

Abstract Introduction The potent endogenous antimicrobial peptide human β-defensin 2 (hBD2) is a crucial mediator of innate immunity. In addition to direct antimicrobial properties, different...

Identification of a system required for the functional surface localization of sugar binding proteins with class III signal peptides in Sulfolobus solfataricus (2007)

Zolghadr, Behnam, Weber, Stefan, Szabó, Zalán, Driessen, Arnold J.M., Albers, Sonja-Verena

The hyperthermophilic archaeon Sulfolobus solfataricus contains an unusual large number of sugar binding proteins that are synthesized as precursors with a class III signal peptide. Such signal...

Table of Contents (2007)

Dipl Ing, Dr. Tilo Balke, Ls Hannover, Professor Dr, Tu Graz, Dipl Ing, ...

Final Version of our investigations into: Report on dangers and opportunities posed by large search engines, particularly Google

Extracting trust from domain analysis: A case study on the Wikipedia project. Autonomic and Trusting (2006)

Pierpaolo Dondio, Stephen Barrett, Stefan Weber, Jean-marc Seigneur

Abstract. The problem of identifying trustworthy information on the World Wide Web is becoming increasingly acute as new tools such as wikis and blogs simplify and democratize publications. Wikipedia...

Abstract (2006)

Eymen Errais, Kay Giesecke, Lisa R. Goldberg, Msci Barra, Andreas Eckner, Bjorn Flesaker, ...

A portfolio credit derivative is a contingent claim on the aggregate loss of a portfolio of credit sensitive securities such as bonds and credit swaps. We propose an affine point process as a dynamic...

Efficacy of patient activated antitachycardia pacing therapy using the Medtronic AT500 pacemaker (2006)

Weber, Stefan, Jeron, Andreas, Schneider, Hans J., Muders, Frank

A 28-year-old female with corrected anomalous pulmonary venous drainage presented with multiple atrial arrhythmias many years later. Ablation techniques eliminated most of the arrhythmias except...

Efficacy of patient activated antitachycardia pacing therapy using the Medtronic AT500 pacemaker (2006)

Weber, Stefan, Jeron, Andreas, Schneider, Hans J., Muders, Frank

A 28-year-old female with corrected anomalous pulmonary venous drainage presented with multiple atrial arrhythmias many years later. Ablation techniques eliminated most of the arrhythmias except...

Photochemically induced dynamic nuclear polarization in a C450A mutant of the LOV2 domain of the Avena sativa blue-light receptor phototropin (2005)

Richter, Gerald, Weber, Stefan, Römisch, Werner, Bacher, Adelbert, Fischer, Markus, Eisenreich, Wolfgang

Phototropin is a blue-light receptor involved in the phototropic response of higher plants. The photoreceptor comprises a protein kinase domain and two structurally similar flavin-mononucleotide...

Photochemically induced dynamic nuclear polarization in a C450A mutant of the LOV2 domain of the Avena sativa blue-light receptor phototropin (2005)

Richter, Gerald, Weber, Stefan, Römisch, Werner, Bacher, Adelbert, Fischer, Markus, Eisenreich, Wolfgang

Phototropin is a blue-light receptor involved in the phototropic response of higher plants. The photoreceptor comprises a protein kinase domain and two structurally similar flavin-mononucleotide...

Abstract (2005)

Jörn Dunkel, Stefan Weber

We discuss efficient Monte Carlo methods for the estimation of convex risk measures in portfolio credit risk models. We focus on the Utility-based Shortfall Risk measures (SR). These risk measures do...

Measures and models of financial risk (2004)

Weber, Stefan

Thema der Dissertation ist zum einen die Quantifizierung und zum anderen die endogene Modellierung von Finanzrisiken. Die mathematische Analyse führt unter anderem auf Zusammenhänge...

Measures and models of financial risk (2004)

Weber, Stefan

Thema der Dissertation ist zum einen die Quantifizierung und zum anderen die endogene Modellierung von Finanzrisiken. Die mathematische Analyse führt unter anderem auf Zusammenhänge...

Measures and models of financial risk / (2004)

Weber, Stefan.

Berlin, Humboldt-University, Diss., 2004 (Nicht für den Austausch).

C.: Binary tomography by iterating linear programs from noisy projections (2004)

Stefan Weber, Thomas Schüle, Joachim Hornegger, Christoph Schnörr

www.siemensmedical.com Abstract. In this paper we improve the behavior of a reconstruction algorithm for binary tomography in the presence of noise. This algorithm which has recently been published...

Distribution-Invariant Risk Measures, Entropy, and Large Deviations (2004)

Stefan Weber

The simulation of distributions of financial positions is an important issue for financial institutions. If risk measures are evaluated for a simulated distribution instead of the model-implied...

Distribution-Invariant Dynamic Risk Measures (2003)

Weber, Stefan

The paper provides an axiomatic characterization of dynamic risk measures for multi-period financial positions. For the special case of a terminal cash flow, we require that risk depends on its...

Distribution-Invariant Dynamic Risk Measures (2003)

Weber, Stefan

The paper provides an axiomatic characterization of dynamic risk measures for multi-period financial positions. For the special case of a terminal cash flow, we require that risk depends on its...

Cyclical Correlations, Credit Contagion, and Portfolio Losses (2003)

Giesecke, Kay, Weber, Stefan

We model aggregate credit losses on large portfolios of financial positions contracted with firms subject to both cyclical default correlation and direct default contagion processes. Cyclical...

Cyclical Correlations, Credit Contagion, and Portfolio Losses (2003)

Giesecke, Kay, Weber, Stefan

We model aggregate credit losses on large portfolios of financial positions contracted with firms subject to both cyclical default correlation and direct default contagion processes. Cyclical...

Credit Contagion and Aggregate Losses (2002)

Giesecke, Kay, Weber, Stefan

Credit contagion refers to the propagation of economic distress from one firm or sovereign government to another. In this paper we model credit contagion phenomena and study the fluctuation of...

Credit Contagion and Aggregate Losses (2002)

Giesecke, Kay, Weber, Stefan

Credit contagion refers to the propagation of economic distress from one firm or sovereign government to another. In this paper we model credit contagion phenomena and study the fluctuation of...

A flexible framework for consistency management (2002)

Weber, Stefan, Nixon, P., Tangney, Brendan

Recent distributed shared memory (DSM) systems provide increasingly more support for the sharing of objects rather than portions of memory. However, like earlier DSM systems these distributed shared...

A flexible framework for consistency management (2002)

Weber, Stefan, Nixon, P., Tangney, Brendan

Recent distributed shared memory (DSM) systems provide increasingly more support for the sharing of objects rather than portions of memory. However, like earlier DSM systems these distributed shared...

A flexible framework for consistency management (2002)

Weber, Stefan, Nixon, P., Tangney, Brendan

Recent distributed shared memory (DSM) systems provide increasingly more support for the sharing of objects rather than portions of memory. However, like earlier DSM systems these distributed shared...

Towards a Framework for Assessing Trust-Based Admission Control in Collaborative Ad Hoc Applications (2002)

Elizabeth Gray, Christian Jensen, Stefan Weber, Jean-marc Seigneur, Chen Yong

The proliferation of mobile devices and the development of ad hoc networking technologies has introduced the possibility of a vast, networked infrastructure of diverse entities partaking in...

Die Inzidenz der T-Wellen Alternation in einer Population herzgesunder Probanden : Eine prospektive Studie (2001)

Weber, Stefan

Erkrankungen des Herz-Kreislaufsystems stehen in den westlichen Industriestaaten an der Spitze der Todesursachenstatistiken. Derplötzliche Herztod tritt dabei als Erstmanifestation oder auch als...

Die Inzidenz der T-Wellen Alternation in einer Population herzgesunder Probanden : Eine prospektive Studie (2001)

Weber, Stefan

Erkrankungen des Herz-Kreislaufsystems stehen in den westlichen Industriestaaten an der Spitze der Todesursachenstatistiken. Der plötzliche Herztod tritt dabei als Erstmanifestation oder auch als...

Primitive-Based Movement Classification for Humanoid Imitation (2000)

Odest Chadwicke Jenkins, Maja J. Mataric, Stefan Weber

. Motor control is a complex problem and imitation is a powerful mechanism for acquiring new motor skills. In this paper, we describe perceptuo-motor primitives, a biologically-inspired notion for a...

Experiments in Imitation Using Perceptuo-Motor Primitives (2000)

Stefan Weber Maja, Stefan Weber, Odest Chadwicke Jenkins

INTRODUCTION Imitation is a powerful mechanism for learning new skills. However, it involves an intricate interaction between perceptual and motor mechanisms, both of which are complex in themselves....

EPR, ENDOR and TRIPLE resonance spectroscopy on the neutral flavin radical in Escherichia coli DNA photolyase. Biochemistry (1999)

Richard Feicht, Kristina Schulz, Peter Sadewater, Aziz Sancar, Adelbert Bacher, ...

ABSTRACT: Ultraviolet radiation promotes the formation of a cyclobutane ring between adjacent pyrimidine residues on the same DNA strand to form a pyrimidine dimer. Such dimers may be restored to...

XRAPTOR: A Simulation Environment for Continuous Virtual Multi-Agent Systems - User Manual (1999)

Günter Bruns, Peter Mössinger, Daniel Polani, Ralf Schmitt, René Spalt, Thomas Uthmann, ...

Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.2.1 The Class Coord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.2.2 The Abstract Class...

XRAPTOR: A Simulation Environment for Continuous Virtual Multi-Agent Systems - User Manual (1999)

Günter Bruns, Peter Mössinger, Daniel Polani, René Spalt, Thomas Uthmann, Stefan Weber

Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.2.1 The Class Coord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5.2.2 The Abstract Class...

A Direct Approach to Robot Soccer Agents: Description for the Team MAINZ ROLLING BRAINS Simulation League of RoboCup '98 (1998)

Daniel Polani, Stefan Weber, Thomas Uthmann

. In the team described in this paper we realize a direct approach to soccer agents for the simulation league of the RoboCup '98tournament. Its backbone is formed by a detailed world model....

Der Kampf des revolutionären mitteldeutschen Proletariats im März 1921 gegen die Schupoprovokation. (1969)

Weber, Stefan.

Berlin, Inst. f. Gesellschaftswiss. beim ZK d. SED, Diss. v. 25. April 1969 (Nicht f. d. Aust.).

Photoactivation of the flavin cofactor in Xenopus laevis (6–4) photolyase: Observation of a transient tyrosyl radical by time-resolved electron paramagnetic resonance

Weber, Stefan, Kay, Christopher W. M., Mögling, Heike, Möbius, Klaus, Hitomi, Kenichi, Todo, Takeshi

The light-induced electron transfer reaction of flavin cofactor photoactivation in Xenopus laevis (6–4) photolyase has been studied by continuous-wave and time-resolved electron paramagnetic...

Photoactivation of the flavin cofactor in Xenopus laevis (6–4) photolyase: Observation of a transient tyrosyl radical by time-resolved electron paramagnetic resonance

Weber, Stefan, Kay, Christopher W. M., Mögling, Heike, Möbius, Klaus, Hitomi, Kenichi, Todo, Takeshi

The light-induced electron transfer reaction of flavin cofactor photoactivation in Xenopus laevis (6–4) photolyase has been studied by continuous-wave and time-resolved electron paramagnetic...

Credit Contagion and Aggregate Losses

Stefan Weber, Kay Giesecke

portfolio losses, contagion, voter model

A CONTINUOUS TIME APPROXIMATION OF AN EVOLUTIONARY STOCK MARKET MODEL

BORIS BUCHMANN, STEFAN WEBER

We derive a continuous time approximation of the evolutionary market selection model of Blume and Easley (1992). Conditions on the payoff structure of the assets are identified that guarantee...

Utility maximization under a shortfall risk constraint

Gundel, Anne, Weber, Stefan

The article analyzes optimal portfolio choice of utility maximizing agents in a general continuous-time financial market model under a joint budget and downside risk constraint. The risk constraint...

Soft tissue navigation: Transferring pre-operative planning data into the operation room

Peterhans, Matthias, Dagon, Benoît, Nolte, Lutz-Peter, Baur, Charles, Vom Berg, Anne, Interbitzin, Daniel, ...

Purpose: Computer-assisted surgery has been established in orthopedic and neurosurgery, and is now becoming available as support for soft tissue surgery. Such technology should bridge the gap between...

Magnetic-field effect on the photoactivation reaction of Escherichia coli DNA photolyase

Henbest, Kevin B., Maeda, Kiminori, Hore, P. J., Joshi, Monika, Bacher, Adelbert, Bittl, Robert, ...

One of the two principal hypotheses put forward to explain the primary magnetoreception event underlying the magnetic compass sense of migratory birds is based on a magnetically sensitive chemical...