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LQG Control Over a Markov Communication Network

We formulate and solve a control problem where data are sent over a communication network that introduces random time delays. Past time delays are assumed known by the use of timestamps and the probability distribution of future delays are modeled with a Markov chain with continuous observation densities. We generalize previous results on LQG control of jump linear systems to cover this situation.

The Rise of the s-Process in the Galaxy

From newly obtained high-resolution, high signal-to-noise ratio spectra the abundances of the elements La and Eu have been determined over the stellar metallicity range -3<[Fe/H]<+0.3 in 159 giant and dwarf stars. Lanthanum is predominantly made by the s-process in the solar system, while Eu owes most of its solar system abundance to the r-process. The changing ratio of these elements in stars ove

Body part terms in Jahai

This article explores the lexicon of body part terms in Jahai, a Mon-Khmer language spoken by a group of hunter–gatherers in the Malay Peninsula. It provides an extensive inventory of body part terms and describes their structural and semantic properties. The Jahai body part lexicon pays attention to fine anatomical detail but lacks labels for major, 'higher-level' categories, like 'trunk', 'limb'

Utfästelser räcker inte

Det är nedslående att Cecilia Malmström givit upp kampen när det gäller fri- och rättigheter på nätet, skriver politiker och nätdebattörer. Den rättssäkerhet vi efterfrågar är en sådan som skyddar yttrandefriheten.