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Age of Information (AoI) is a relatively new metric introduced to capture the freshness of a particular piece of information. While throughput and delay measurements are widely studied in the context of dense IEEE 802.11 Wireless LANs (WLANs) little is known in the literature about the AoI in this context. In this work we study the effects on the average AoI and its variance when a sensor node is
A new type of high-performance robots has been developed by ABB Robotics, the Robotics Lab at Lund University and Güdel AG, Switzerland. In all parts of the project, ranging from the simulation of the kinematic configuration and reachable workspace, and kinematic and dynamic calibration/grey-box identification, and to code generation of controllers and optimal switching strategies for hybrid contr
Popular Abstract in Swedish Alla ryggradsdjur har ögon av en typ som kallas kameraöga. Som man kan höra på namnet så fungerar ett sådant öga ungefär som en kamera. En lins fokuserar ljuset på ett ljuskänsligt lager som i ett öga kallas för näthinna (retina). De ljuskänsliga cellerna i näthinnan heter tappar och stavar. Stavarna används för seende i mörker och tapparna används för seende i starkareMany fishes have well-developed visual systems with color vision capabilities. The crystalline lens is the major refractive element in a fish eye since the cornea is optically inactive underwater. A typical fish eye has a large pupil and a lens of short focal length, features that increase light gathering ability. They lead also to short depth of focus, which makes the eye particularly susceptible
Today's electrical energy conversion devices, such as motors, transformers, inductors and generators, are based on laminated magnetic cores for reduction of eddy current losses, imposing a two-dimensional magnetic flux distribution. Using a three-dimensional magnetic flux distribution while maintaining low magnetic losses requires new approaches to magnetic core materials. Soft Magnetic Composites
Location information is exchanged among members of Vehicular Ad Hoc Networks (VANET) to serve many road and safety applications. Vehicles will announce their identity, position, and mobility information to their neighboring nodes. The importance of such information makes privacy a major concern. Successful implementation of VANET requires protecting the vehicle's identity at all times and preventi
The BCJR algorithm is a symbol-bysymbol soft-output MAP decoder for trellis codes. This paper studies the effect of wordlength variations on the BCJR performance and looks at two strategies for reducing the wordlength.
