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Persistent Permutability in Choice Petri Nets
arXiv:2601.18004v2 Announce Type: replace Abstract: Persistence is a strong, global, behavioural property of a Petri net, meaning that no activity can disable a different activity. Persistent permutability is a weaker property, pertaining to individual interleavings of a Petri net and stating that a non-persistent sequence can be permuted into a persistent one. We identify Petri net classes for which persistent permutability already suffices to imply overall persistence.
TAPAAL SMC: Statistical Model Checking of Stochastic Timed-Arc Petri Nets
arXiv:2606.02007v1 Announce Type: new Abstract: Timed-Arc Petri net (TAPN) is a timed extension of the classical Petri net model where tokens have their age and input arcs are associated with time intervals restricting the ages of tokens available for transition firing. Additionally, a TAPN can also contain place invariants constraining the ages of tokens in places, inhibitor arcs preventing a transition from firing and transport arcs that preserve token ages upon firing. This set of...
Petri Net Modeling and Deadlock-Free Scheduling of Attachable Heterogeneous AGV Systems
arXiv:2508.00724v2 Announce Type: replace Abstract: The increasing demand for flexible automation has accelerated the adoption of heterogeneous automated guided vehicles (AGVs). This work investigates a new scheduling problem in a material transportation system consisting of attachable heterogeneous AGVs, including carriers and shuttles, that flexibly attach and detach for cooperative task execution. While such collaboration enhances operational efficiency, the attachment-induced...
Towards Process Mining Use Case Map Models with PM4Py-UCM
Given the increasing amount of data available in organizational systems, there is an opportunity for early requirements engineering (RE) activities to be better based on evidence than ever before. Process mining (PM) has been used for over two decades to discover and analyze as-is process models from event logs extracted from such data, with outputs often in the form of Petri Nets, directly-follows graphs, or BPMN models. This paper aims to make Use Case Map (UCM) models, from ITU-T's User...
Who are your club's future stars? Updated top 10 p...
As we enter June, it's time for our next team-by-team MLB prospect rankings big board update. We've revised the top 10 prospects for all 30 teams. What has changed since May?
The Screwworm Is Messing With America’s Beef
This is an edition of The Atlantic Daily, a newsletter that guides you through the biggest stories of the day, helps you discover new ideas, and recommends the best in culture. The first thing you should know about the New World screwworm is that it isn’t actually a worm; it’s a fly. At the larva stage, it twists into the flesh of its host, devouring it from within.
What Trump’s New Plan for the 250th Reveals
This is an edition of The Atlantic Daily, a newsletter that guides you through the biggest stories of the day, helps you discover new ideas, and recommends the best in culture. What’s a party without a little music? This year, the National Mall was meant to host a free summer concert series in celebration of the 250th anniversary of our nation’s founding.
The Lag Between an Iran Deal and Lower Oil Prices
This is an edition of The Atlantic Daily, a newsletter that guides you through the biggest stories of the day, helps you discover new ideas, and recommends the best in culture. Sign up for it here.For months, Donald Trump has been desperate for Iran to loosen its grip on the Strait of Hormuz. Now he says it’s happening; a deal to reopen the waterway “has been largely negotiated,” per a Truth Social post on Saturday.
AI slows hiring in some roles, but demand grows for human skills
AI may be tightening jobs market, but some roles could see stronger demand Thu 4 Jun 2026 at 12:05am In short: A new economic report by consultancy firm Deloitte says the AI "winners" will be organisations that combine human and machine strengths, with recruiters saying human judgement will still be key. Deloitte says AI is shifting the job market, not necessarily through cuts but role transformations. It says employment is still growing, but hiring is starting to slow down as a result of AI.
Narrow Secret Loyalty Dodges Black-Box Audits
arXiv:2605.06846v3 Announce Type: replace Abstract: Recent work identifies secret loyalties as a distinct threat from standard backdoors. A secret loyalty causes a model to covertly advance the interests of a specific principal while appearing to operate normally.