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https://nd.digital/editions/nd.DerTag/2025-05-31/articles/18…

FD-DiT: Frequency Domain-Directed Diffusion Transformer for Low-Dose CT Reconstruction
Qiqing Liu, Guoquan Wei, Zekun Zhou, Yiyang Wen, Liu Shi, Qiegen Liu
https://arxiv.org/abs/2506.23466

FD-DiT: Frequency Domain-Directed Diffusion Transformer for Low-Dose CT Reconstruction
Low-dose computed tomography (LDCT) reduces radiation exposure but suffers from image artifacts and loss of detail due to quantum and electronic noise, potentially impacting diagnostic accuracy. Transformer combined with diffusion models has been a promising approach for image generation. Nevertheless, existing methods exhibit limitations in preserving finegrained image details. To address this issue, frequency domain-directed diffusion transformer (FD-DiT) is proposed for LDCT reconstruction. …

3D surface profiling via photonic integrated geometric sensor
Ziyao Zhang, Yizhi Wang, Chunhui Yao, Huiyu Huang, Rui Ma, Xin Du, Wanlu Zhang, Zhitian Shi, Minjia Chen, Ting Yan, Liang Ming, Yuxiao Ye, Richard Penty, Qixiang Cheng
https://arxiv.org/abs/2506.23187

3D surface profiling via photonic integrated geometric sensor
Measurements of microscale surface patterns are essential for process and quality control in industries across semiconductors, micro-machining, and biomedicines. However, the development of miniaturized and intelligent profiling systems remains a longstanding challenge, primarily due to the complexity and bulkiness of existing benchtop systems required to scan large-area samples. A real-time, in-situ, and fast detection alternative is therefore highly desirable for predicting surface topography…

Time for Quiescence: Modelling quiescent behaviour in testing via time-outs in timed automata
Laura Brand\'an Briones, Marcus Gerhold, Petra van den Bos, Mari\"elle Stoelinga
https://arxiv.org/abs/2507.18205

Time for Quiescence: Modelling quiescent behaviour in testing via time-outs in timed automata
Model-based testing (MBT) derives test suites from a behavioural specification of the system under test. In practice, engineers favour simple models, such as labelled transition systems (LTSs). However, to deal with quiescence - the absence of observable output - in practice, a time-out needs to be set to conclude observation of quiescence. Timed MBT exists, but it typically relies on the full arsenal of timed automata (TA). We present a lifting operator $χ^{\scriptstyle M}\!$ that adds timi…

CTR-Driven Ad Text Generation via Online Feedback Preference Optimization
Yanda Chen, Zihui Ren, Qixiang Gao, Jiale Chen, Si Chen, Xubin Li, Tiezheng Ge, Bo Zheng
https://arxiv.org/abs/2507.20227

CTR-Driven Ad Text Generation via Online Feedback Preference Optimization
Advertising text plays a critical role in determining click-through rates (CTR) in online advertising. Large Language Models (LLMs) offer significant efficiency advantages over manual ad text creation. However, LLM-generated ad texts do not guarantee higher CTR performance compared to human-crafted texts, revealing a gap between generation quality and online performance of ad texts. In this work, we propose a novel ad text generation method which optimizes for CTR through preference optimizatio…

The Jet Origin of the Mid-infrared Excess in the Black Hole V404 Cygni in Quiescence
E. S. Borowski, R. I. Hynes, Q. Hunt, A. J. Tetarenko, R. M. Plotkin, T. Shahbaz, P. Gandhi, T. J. Maccarone, J. C. A. Miller-Jones, C. O. Heinke, A. W. Shaw, T. D. Russell, G. R. Sivakoff, P. A. Charles, E. V. Palaiologou, P. Reig
https://arxiv…

The Jet Origin of the Mid-infrared Excess in the Black Hole V404 Cygni in Quiescence
Observations of some quiescent black hole X-ray binaries have revealed an excess of mid-infrared (MIR) emission above that expected from their donor stars. In one system, V404 Cygni, this excess has been variously suggested to arise from the accretion disk, circumbinary material, or a compact relativistic jet. Here we present simultaneous James Webb Space Telescope (JWST), Atacama Large Millimeter/submillimeter Array (ALMA), and complementary multi-wavelength observations undertaken to resolve …

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Royal House:
🎵 Can You Party
#RoyalHouse
https://boizo.bandcamp.com/track/royal-house-can-you-party-boizo-edit
https://open.spotify.com/track/0oWsLdL42QXWzHA1mzekTC

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Courtney Pine & Zoe Rahmann:
🎵 Motherless Child
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https://open.spotify.com/track/7qAqCMXWPUtL6Ab2RcSHtB

Cooperative Sensing and Communication Beamforming Design for Low-Altitude Economy
Fangzhi Li, Zhichu Ren, Cunhua Pan, Hong Ren, Jing Jin, Qixing Wang, Jiangzhou Wang
https://arxiv.org/abs/2506.20244

Cooperative Sensing and Communication Beamforming Design for Low-Altitude Economy
To empower the low-altitude economy with high-accuracy sensing and high-rate communication, this paper proposes a cooperative integrated sensing and communication (ISAC) framework for aerial-ground networks. In the proposed system, the ground base stations (BSs) cooperatively serve the unmanned aerial vehicles (UAVs), which are equipped for either joint communication and sensing or sensing-only operations. The BSs employ coordinated beamforming to simultaneously transmit communication and sensi…

🇺🇦 #NowPlaying on BBCRadio3's #RoundMidnight
Courtney Pine & Zoe Rahmann:
🎵 Motherless Child
#CourtneyPine #ZoeRahmann
https://open.spotify.com/track/7qAqCMXWPUtL6Ab2RcSHtB