Transmit waveform design is one of the most important problems in active sensing and communication systems. This problem, due to the complexity and non-convexity, has been always the main topic of many papers for the decades. However, still an optimal solution which guarantees a global minimum for this multi-variable optimization problem is not found. In this paper, we propose an attracting met...

introduction: pseudomonas aeruginosa is a gram-negative bacterium that considered as important opportunistic human pathogen. one of the mechanisms that help bacteria to tolerate survival in adverse conditions and resistance to antibiotics is biofilm formation through quorum sensing (qs) signals and toxin-antitoxin (ta) systems. qs and ta are two systems that have important roles in biofilm form...

This paper considers uncertain dynamic systems in which sensing is performed upon request. We introduce the concept of an active sensing policy which evaluates the current state information and determines whether or not to request sensing information. The sensing policy considered has the goal of bounding the state uncertainty in a given direction in the state space. The policy presented is sho...

Digital networks and the capability of addressable sensing devices ooer new challenges for system theory. Rather than reading sensors continuously or periodically , as has traditionally been done, addressable sensing devices allow readings to be taken aperiodically and only as needed. In this paper, we introduce the notion of a sensing policy to determine which sensors should be read and when. ...

There has been significant recent work on the limits of covert communications, where the presence of a transmitted signal is kept hidden from an attentive adversary. In this paper, we turn our attention to the covert sensing problem. In particular, one of the main drawbacks of active sensing is that it can reveal the presence and/or location of the sensor. But active sensing is necessary or des...

Active sensing systems are purposive and information-seeking sensory systems. Active sensing usually entails sensor movement, but more fundamentally, it involves control of the sensor apparatus, in whatever manner best suits the task, so as to maximize information gain. In animals, active sensing is perhaps most evident in the modality of touch. In this theme issue, we look at active touch acro...