Results 51 to 60 of about 1,247,855 (284)

A Comparison of Petri Net Semantics under the Collective Token Philosophy

open access: yes, 1998
In recent years, several semantics for place/transition Petri nets have been proposed that adopt the collective token philosophy. We investigate distinctions and similarities between three such models, namely configuration structures, concurrent ...
Meseguer, J.   +7 more
core   +2 more sources

Performance analysis of reverse auction mechanisms based on Petri nets

open access: yesAdvances in Mechanical Engineering, 2017
As a methodology of resource location and allocation, reverse auctions are one of the most important activities in supply chains. There are four main auction mechanisms in auction theory, ascending-bid auctions, descending-bid auctions, first-price and ...
Xiaodan Zhang   +3 more
doaj   +1 more source

From Fiber Bundles to Architected Membranes: Triply Periodic Minimal Surface Architectures for Biohybrid Artificial Lungs

open access: yesAdvanced Materials, EarlyView.
Additively manufactured triply periodic minimal surface (TPMS) membranes offer an architecture‐driven alternative to hollow fiber bundles in artificial lungs. Multiphysics simulations and endothelialized prototypes show that the 3D‐printable membrane architecture improves gas exchange, blood flow distribution, and hemocompatibility, enabling ...
Michael Pflaum   +14 more
wiley   +1 more source

Research on Grid Scheduling of Super-Peer Model Based on QoS

open access: yesDianxin kexue, 2014
Firstly,a kind of grid resource management model——super-peer model was proposed.For this model,economic mechanism was introduced,allowing a grid user to put forward the task’s expected execution deadline,cost limit and the weight parameters between them ...
Shanliang Pan, Xi Huang, Qinjiao Mao
doaj   +2 more sources

Process versus Unfolding Semantics for Place/Transition Petri Nets [PDF]

open access: yes, 1996
In the last few years, the semantics of Petri nets has been investigated in several different ways. Apart from the classical "token game," one can model the behaviour of Petri nets via non-sequential processes, via unfolding constructions, which provide ...
Vladimiro Sassone (16064975)   +14 more
core   +2 more sources

S‐Nitrosothiols as Thiol‐Protecting Groups for Controlled Thiol‐Maleimide Crosslinking of Homogeneous Soft Hydrogels

open access: yesAdvanced Materials, EarlyView.
Rapid thiol‐maleimide addition frequently outpaces mixing, resulting in heterogeneous hydrogels. S‐nitrosothiols act as thiol‐protecting groups, allowing uniform mixing with maleimide‐functionalized polymers before gelation. Sodium thiosulfate or sodium ascorbate then regenerates thiols on demand, triggering controlled thiol‐maleimide crosslinking ...
Julian A. Serna   +7 more
wiley   +1 more source

A new method for converting extended version of petri nets to fuzzy extended markup language [PDF]

open access: yesManagement Science Letters, 2014
A model is a simple and straightforward performance of structure and behavior of the system under study expressed as mathematical relations. In fact, with a model, knowledge and information on modeled phenomenon are prepared and the cost and risk of ...
Solmaz Soltani, Ali Harounabadi
doaj   +1 more source

The Impact of Petri Nets on System-of-Systems Engineering [PDF]

open access: yes, 2009
The successful engineering of a large-scale system-of-systems project towards deterministic behaviour depends on integrating autonomous components using international communications standards in accordance with dynamic requirements.
SINCLAIR, KIRSTEN,MHAIRI
core  

Wearable Morphology‐Adaptive in‐Ear Device With Active Cleansing Capability for Multimodal Health Monitoring

open access: yesAdvanced Materials, EarlyView.
We present SCIENCE, an in‐ear multimodal physiological monitor featuring two key innovations. Water‐triggered morphological expansion (a 2‐mm cylinder to a 9‐mm spindle) achieves conformal adaptation across complex canal geometries. Simultaneously, active biofouling mitigation disrupts cerumen barriers, reducing sensor‐skin impedance by 20%.
Shuyun Zhuo   +3 more
wiley   +1 more source

Lab‐in‐a‐Tube System Integrating Hierarchically Wrinkled Electrodes and DNAzyme‐Functionalized Beads for Diagnosis of Clostridioides difficile Infection

open access: yesAdvanced Materials, EarlyView.
The point‐of‐care diagnosis of Clostridioides difficile infection remains challenging due to reliance on slow culture and amplification‐based methods. A lab‐in‐a‐tube electrochemical biosensor integrating DNAzymes, antifouling magnetic beads, and a hierarchically structured flow cell enables amplification‐ and culture‐free detection directly in stool ...
Survanshu Saxena   +10 more
wiley   +1 more source

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