Results 161 to 170 of about 6,511 (198)

Synthetic Chromatophores for Color and Pattern Morphing Skins

Advanced Materials, EarlyView.
Cephalopods use chromatophore organs (muscle‐actuated pigment sacs) to alter their skin color and pattern. Synthetic chromatophores, which closely mimic the mechano‐optical process found in cephalopods using stimuli‐responsive microscale hydrogel actuators, are reported.
Brennan P. Watts, Matthew R. Jamison, John M. Kapitan, Nengjian Huang, Delroy Taylor, Stephen A. Morin   +5 more
wiley   +1 more source

Heterojunction‐Driven Stochasticity: Bi‐Heterojunction Noise‐Enhanced Negative Transconductance Transistor in Image Generation

Advanced Materials, EarlyView.
This work engineered a bi‐heterojunction noise‐enhanced negative transconductance (BHN‐NTC) transistor using a half‐PTCDI‐C13 layer, achieving expanded and tunable noise characteristics. This advancement enables efficient multi‐bit TRNGs for AI‐driven image generation and enhances logic circuit applications.
Youngmin Han, Ryun‐Han Koo, Jaechan Song, Chang‐Hyun Kim, Eun Kwang Lee, Wonjun Shin, Hocheon Yoo   +6 more
wiley   +1 more source

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Diagnosability of discrete event systems

IEEE Transactions on Automatic Control, 1995
The authors study the diagnosability of discrete-event systems. Failure detection and isolation is an important task in the automatic control of large, complex systems. A discrete event system (DES) approach to the problem of failure diagnosis is proposed in this work.
Stéphane Lafortune, Meera Sampath, Demosthenis Teneketzis, K. Sinnamohideen, Raja Sengupta   +4 more
openaire   +2 more sources

On observability of discrete-event systems

Information Sciences, 1988
The supervised discrete-event system is considered. The set of possible events is partitioned into the sets of controllable and observable events. State transitions are governed by the language generated by the transition function and the alphabet of event labels.
W. M. Wonham, Feng Lin
openaire   +2 more sources

Supervisor Reduction for Discrete-Event Systems

Discrete Event Dynamic Systems, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
W. M. Wonham, Rong Su
openaire   +3 more sources

On decentralized observability of discrete event systems [PDF]

IEEE Conference on Decision and Control and European Control Conference, 2011
In this paper we deal with the problem of decentralized observability of discrete event systems. We consider a set of sites that observe a subset of events. Each site transmits its own observation to a coordinator that decides if the word observed belongs to a legal behavior or not.
CABASINO, MARIA PAOLA, GIUA, ALESSANDRO, Mahulea C, SEATZU, CARLA   +3 more
openaire   +2 more sources

Discrete-Event Systems [PDF]

, 2005
Discrete Event Systems (DES) are characterized by the occurrence of discrete events asynchronously over time which are responsible for driving all dynamics. Such systems are ubiquitous in modern technological environments, ranging from communication networks and manufacturing to transportation and logistics.
openaire   +1 more source

Active diagnosis of discrete event systems

Proceedings of the 36th IEEE Conference on Decision and Control, 1998
Summary: The need for accurate and timely diagnosis of system failures and the advantages of automated diagnostic systems are well appreciated. However, diagnosability considerations are often not explicitly taken into account in the system design. In particular, design of the controller and that of the diagnostic subsystem are decoupled, and this may ...
Meera Sampath, Stéphane Lafortune, Demosthenis Teneketzis   +2 more
openaire   +4 more sources

Discrete-event dynamic systems [PDF]

IEEE Transactions on Control Systems Technology, 1999
The supervisory control theory of discrete-event dynamic systems (DEDS), first introduced by Ramadge and Wonham, is based on an automata concept. Given a process, the objective of this theory is to design a supervisor in such a way that the process coupled with the supervisor behaves according to various constraints.
René David, F. Charbonnier, H. Alla
openaire   +1 more source

The predictability of discrete event systems

IEEE Transactions on Automatic Control, 1989
Perturbation analysis and the automaton and language model are approaches developed recently for the study of discrete-event systems (DESs). The prediction of a trajectory of a new system is the essential idea of perturbation analysis. The automaton theory models a trajectory of a DES by a string in a particular language.
openaire   +3 more sources