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In recent years robotic systems have matured enough to perform simple home or office tasks, guide visitors in environments such as museums or stores and aid people in their daily life. To make the interaction with service and even industrial robots as fast and intuitive as possible, researchers strive to create transparent interfaces close to human-human interaction. As facial expressions play a central role in human-human communication, robot faces were implemented with varying degrees of human-likeness and expressiveness. We propose an emotion model to parameterize a screen based facial animation via inter-process communication. A software will animate transitions and add additional animations to make a digital face appear “alive” and equip a robotic system with a virtual face. The result will be an inviting appearance to motivate potential users to seek interaction with the robot.
Instead of waiting for and constantly adapting to details of political interventions, utilities need to focus on their environment from a holistic perspective. The unique position of the company - be it a local utility, a bigger player, or an international utility specializing in specitic segments - has to be the basis of goals and strategies. But without consistent translation of these goals and strategies into processes, structures, and company culture, a strategy remains pure theory. Companies need to engage in a continuing learning process. This means being willing to pass on strategies, to slow down or speed up, to work from a different angle etc.
This article is a review of the book "Brain computation as hierarchical abstraction" by Dana H. Ballard published by MIT press in 2015. The book series computational neuroscience familiarizes the reader with the computational aspects of brain functions based on neuroscientific evidence. It provides an excellent introduction of the functioning, i.e. the structure, the network and the routines of the brain in our daily life. The final chapters even discuss behavioral elements such as decision-making, emotions and consciousness. These topics are of high relevance in other sciences such as economics and philosophy. Overall, Ballard’s book stimulates a scientifically well-founded debate and, more importantly, reveals the need of an interdisciplinary dialogue towards social sciences.
In this note we look at anisotropic approximation of smooth functions on bounded domains with tensor product splines. The main idea is to extend such functions and then use known approximation techniques on Rd. We prove an error estimate for domains for which bounded extension operators exist. This obvious approach has some limitations. It is not applicable without restrictions on the chosen coordinate degree even if the domain is as simple as the unit disk. Further for approximation on Rd there are error estimates in which the grid widths and directional derivatives are paired in an interesting way. It seems impossible to maintain this property using extension operators.
Optimization-based analog layout automation does not yet find evident acceptance in the industry due to the complexity of the design problem. This paper presents a Self-organized Wiring and Arrangement of Responsive Modules (SWARM), able to consider crucial design constraints both implicitly and explicitly. The flexibility of algorithmic methods and the expert knowledge captured in PCells combine into a flow of supervised module interaction. This novel approach targets the creation of constraint-compliant layout blocks which fit into a specified zone. Provoking a synergetic self-organization, even optimal layout solutions can emerge from the interaction. Various examples depict the power of that new concept and the potential for future developments.
The superior electrical and thermal properties of silicon carbide (SiC) allow further shrinking of the active area of future power semiconductor devices. A lower boundary of the die size can be obtained from the thermal impedance required to withstand the high power dissipation during a short-circuit event. However, this implies that the power distribution is homogeneous and that no current filamentation has to be considered. Therefore, this work investigates this assumption by evaluating the stability of a SiC-MOSFET over a wide range of operation conditions by measurements up to destruction, thermal simulations, and high-temperature characterization.
This paper addresses the turn-on switching process of insulated-gate bipolar transistor (IGBT) modules with anti-parallel free-wheeling diodes (FWD) used in inductive load switching power applications. An increase in efficiency, i.e. decrease in switching losses, calls for a fast switching process of the IGBT, but this commonly implies high values of the reverse-recovery current overshoot. To overcome this undesired behaviour, a solution was proposed which achieves an independent control of the collector current slope and peak reverse recovery current by applying a gate current that is briefly turned negative during the turn-on process. The feasibility of this approach has already been shown, however, a sophisticated control method is required for applying it in applications with varying currents, temperature and device parameters. In this paper a solution based on an adaptive, iterative closed-loop ontrol is proposed. Its effectiveness is demonstrated by experimental results from a 1200 V/200A IGBT power module for different load currents and reverse-recovery current overshoots.
Branding in sports
(2016)
Brands are ubiquitous in the sports business. The significance of the brand is fuelled not only by the various functions that a brand performs for providers and consumers in sports, but by the monetary value that brands have come to represent for sporting organizations. As part of the commercialization and professionalization of sports, a uniform brand presence is becoming increasingly important for sporting organizations. The implication is the need for systematic and integral brand management. This chapter initially examines the key features of sports from the marketing perspective and the most important fundamentals of sport marketing. Based on this, we will demonstrate specifically how brands in sports are established and cultivated.