Abstract: This paper proposes a hierarchical safe reinforcement learning with prescribed performance control (HSRL-PPC) scheme to address the challenges of interconnected leader-follower systems ...

Abstract: The dynamic and complex nature of hypersonic re-entry vehicle (HRV) systems poses significant challenges in achieving precise attitude control, especially when confronted with system ...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday added a critical security flaw impacting the Sudo command-line utility for Linux and Unix-like operating systems to its Known ...

Ronnie O'Sullivan has said he is 'devastated' by the death of pool legend Mika Immonen at the age of 52. Immonen has been diagnosed with stage four colorectal cancer back in December 2023. The Finnish ...

SAN DIEGO, Sept. 29, 2025 (GLOBE NEWSWIRE) -- Kratos Defense & Security Solutions, Inc. (Nasdaq: KTOS), a technology company in Defense, National Security and Global Markets, has successfully ...

Deputy Sec. of State Landau made the remarks amid the U.N. General Assembly. The second-highest-ranking U.S. diplomat called for changes to international refugee and asylum policies and accused most ...

The concrete bed stopped a commercial flight that lost control during landing. The safety system slows a runaway aircraft by collapsing under its weight. By Mark Walker A concrete safety bed stopped a ...

Arizona’s prison health care system is on the verge of being put under court control after more than two decades of litigation. Judge Roslyn Silver has found the system “plainly, grossly inadequate.” ...

Several close calls had survivor pool players a bit nervous last week, especially when Dallas needed a long, late field goal to hold off the New York Giants. For Week 3, several look promising due to ...

Anyone who took the Dallas Cowboys in survivor pools has to be thanking their lucky stars they remain alive after what might end up being the biggest sweat of 2025. Five different lead changes in the ...