Tootfinder

Frequency-Domain Denoising-Based in Vivo Fluorescence Imaging
XuHao Yu, RongYuan Zhang, Zhen Tian, Yixuan Chen, JiaChen Zhang, Yue Yuan, Zheng Zhao, Ben Zhong Tang, Dazhi Hou
https://arxiv.org/abs/2508.02025

Frequency-Domain Denoising-Based in Vivo Fluorescence Imaging
The second near-infrared window (NIR-II, 900-1,880 nm) has been pivotal in advancing in vivo fluorescence imaging due to its superior penetration depth and contrast. Yet, its clinical utility remains limited by insufficient imaging temporal-spatial resolution and the absence of U.S. Food and Drug Administration (FDA)-approved NIR-II contrast agents. This work presents a frequency-domain denoising (FDD)-based in vivo fluorescence imaging technique, which can improve signal-to-background ratio (S…

Lattice anharmonicity effects in fluorite oxide single crystals and anomalous increase in phonon lifetime in ceria at elevated temperature
Amey Khanolkar, Saqeeb Adnan, Md Minaruzzaman, Linu Malakkal, Darren B. Thomson, David B. Turner, J. Matthew Mann, David H. Hurley, Marat Khafizov
https://arxiv.org/abs/2508.14254

Lattice anharmonicity effects in fluorite oxide single crystals and anomalous increase in phonon lifetime in ceria at elevated temperature
We investigate the temperature dependence of the frequency and linewidth of the triply-degenerate T$_{2g}$ zone-centered optical phonon in flux-grown ceria and hydrothermally-synthesized thoria single crystals from room temperature to 1273 K using Raman spectroscopy. Both crystals exhibit an expected increase in the phonon linewidth with temperature due to enhanced phonon-phonon scattering. However, ceria displays an anomalous linewidth reduction in the temperature range of 1023-1123 K. First-p…

ASTRA: Autonomous Spatial-Temporal Red-teaming for AI Software Assistants
Xiangzhe Xu, Guangyu Shen, Zian Su, Siyuan Cheng, Hanxi Guo, Lu Yan, Xuan Chen, Jiasheng Jiang, Xiaolong Jin, Chengpeng Wang, Zhuo Zhang, Xiangyu Zhang
https://arxiv.org/abs/2508.03936

ASTRA: Autonomous Spatial-Temporal Red-teaming for AI Software Assistants
AI coding assistants like GitHub Copilot are rapidly transforming software development, but their safety remains deeply uncertain-especially in high-stakes domains like cybersecurity. Current red-teaming tools often rely on fixed benchmarks or unrealistic prompts, missing many real-world vulnerabilities. We present ASTRA, an automated agent system designed to systematically uncover safety flaws in AI-driven code generation and security guidance systems. ASTRA works in three stages: (1) it build…

Autoexperte #Dudenhöffer sieht #China bei #Elektroautos und autonomem Fahren weit voran, während die #USA

Autoexperte: "Elon Musks Robotaxis sind lachhaft. Er ist zehn Jahre zu spät"
Ferdinand Dudenhöffer erklärt, weshalb China bei E-Autos und autonomen Fahrzeugen weit voraus ist

🍮 Wissen zum Nachtisch: 🍨
#CDU / #CSU, #FDP und AfD fordern einen Wiedereinstieg in bzw. Ausbau der #Kernenergie

Warum Kernkraftwerke unwirtschaftlich sind und keine Zukunft haben
Ist Atomstrom noch eine Option? Studien zeigen: Die Zukunft gehört Wind und Solar – nicht der teuren und riskanten Atomkraft.

🍮 Wissen zum Nachtisch: 🍨
#CDU / #CSU, #FDP und AfD fordern einen Wiedereinstieg in bzw. Ausbau der #Kernenergie

Warum Kernkraftwerke unwirtschaftlich sind und keine Zukunft haben
Ist Atomstrom noch eine Option? Studien zeigen: Die Zukunft gehört Wind und Solar – nicht der teuren und riskanten Atomkraft.