Alexander Schaub

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Reputation systems are crucial for distributed applications in which users have to be made accountable for their actions, such as e-commerce websites. However, existing systems often disclose the identity of the raters, which might deter honest users from posting reviews, out of fear of retaliation from the ratees. While many privacy-preserving reputation(More)
Web applications are subject to several types of attacks. In particular, side-channel attacks consist in performing a statistical analysis of the web traffic to gain sensitive information about a client. In this paper, we investigate how side-channel leaks can be used on search engines such as Google or Bing to retrieve the client's search query. In(More)
—Reputation systems are a major feature of every modern e-commerce website, helping buyers carefully choose their service providers and products. However, most websites use centralized reputation systems, where the security of the system rests entirely upon a single Trusted Third Party. Moreover, they often disclose the identities of the raters, which may(More)
—In this paper, we explore control theory as a solution to stop epidemic outbreaks in networks. Control theory deals with the behavior of dynamical systems, specifically networks in this case. We investigate the process of finding sets of nodes required to control a network, and applying an input to these nodes in order to drive the system from a given(More)
This work presents a novel autonomous parking concept for a four wheel-steerable robotic electric vehicle called ROboMObil (ROMO). Its extraordinary maneuverability, including rotations and lateral driving, and its capability of autonomous driving is demonstrated in the application of parallel parking. The whole process is described starting with the(More)
—This paper introduces a new vision based controller that uses the entries of a homography matrix to control a highly maneuverable mobile robot. It aims to reduce the sensitivity of the control to calibration errors through connection of the perception and control in the data space of the sensor. The control law is formulated in a way that it is only(More)
An anti-inflammatory effect of reconstituted High Density Lipoprotein (rHDL) has been demonstrated in atherosclerosis and in sepsis models. An increase of adhesion molecules as well as tissue factor expression on endothelial cells in response to inflammatory or danger signals are attenuated by the treatment with rHDL. Here we show the inhibitory effect of(More)