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Optimal Coordination of Homogeneous Agents Subject to Delayed Information Exchange

We consider a class of large scale linear-quadratic coordination problems where the information exchange is subject to a time-delay. We show that several previously known properties of the optimal solution to the delay-free problem extend to this case. In particular, the optimal control law comprises a diagonal (decentralized) term complemented by a rank-one coordination term, which can be impleme

An efficient co-located MIMO antenna for compact terminals

The limited volume of mobile handset and the phenomenon of chassis excitation complicate the design of multiple antennas for MIMO applications. In this work, a compact co-located dual-antenna system implemented on one edge of a 100 mm by 40 mm chassis is proposed for operation below 1 GHz. The dual-antenna structure includes a folded monopole to excite the fundamental electric dipole mode of the c

TrueTime: Real-time Control System Simulation with MATLAB/Simulink

Traditional control design using MATLAB/Simulink, often disregards the temporal effects arising fromthe actual implementation of the controllers. Nowadays, controllersare often implemented as tasks in a real-time kernel and communicatewith other nodes over a network. Consequently, the constraints of thetarget system, e.g., limited CPU speed and network bandwidth, must betaken into account at desig

To the Rhythm of Shopping: On Rhythmic and Territorial Stabilisations of Public Space in Urban Retail Environments

This article deals with the impact of certain retail strategies on urban life. More specifically it deals with two recent tendencies of the retail environment: (a) spatial homogenisation and clustering of retail into large areas or territories, and (b) the synchronisations of retail with different kinds of public activities and events. For the last decades, retail areas have tended to grow larger