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[Abridged] We present new VLT ISAAC spectra for 30 quasars, which we combine with previous data to yield a sample of 53 intermediate redshift (z ~ 0.9 - 3.0) sources. The sample is used to explore properties of prominent lines in the Hbeta…

Astrophysics · Physics 2009-11-13 P. Marziani , J. W. Sulentic , G. M. Stirpe , S. Zamfir , M. Calvani

This paper presents a phase-difference-based scheme for three-dimensional (3D) line-of-sight (LoS) user localization using a uniform planar array (UPA), applicable to both near-field and far-field regimes under the exact spherical-wave…

Signal Processing · Electrical Eng. & Systems 2026-04-02 Sergey Isaev , Nikola Zlatanov

Breast cancer is a major concern for women's health globally, with axillary lymph node (ALN) metastasis identification being critical for prognosis evaluation and treatment guidance. This paper presents a deep learning (DL) classification…

Image and Video Processing · Electrical Eng. & Systems 2023-10-09 Glejdis Shkëmbi , Johanna P. Müller , Zhe Li , Katharina Breininger , Peter Schüffler , Bernhard Kainz

The treatment of breast cancer using radiotherapy involves uncertainties regarding breast positioning. As the studies progress, more is known about the expected breast positioning errors, which are taken into account in the Planning Target…

Computational Geometry · Computer Science 2025-03-28 Pierre Galmiche , Hyewon Seo , Yvan Pin , Philippe Meyer , Georges Noël , Michel de Mathelin

Automatic delineation and measurement of main organs such as liver is one of the critical steps for assessment of hepatic diseases, planning and postoperative or treatment follow-up. However, addressing this problem typically requires…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Elena Balashova , Jiangping Wang , Vivek Singh , Bogdan Georgescu , Brian Teixeira , Ankur Kapoor

We explore non-redundant aperture masking to derive the size and shape of the ALBA synchrotron light source at optical wavelengths using synchrotron radiation interferometry. We show that non-redundant masks are required due to phase…

Accelerator Physics · Physics 2024-06-05 C. L. Carilli , L. Torino , U. Iriso , B. Nikolic , N. Thyagarajan

(ABRIDGED) We describe the first results of the ALHAMBRA survey which provides cosmic tomography of the evolution of the contents of the Universe over most of Cosmic history. Our approach employs 20 contiguous, equal-width, medium-band…

In the U.S., lung cancer is the second major cause of death. Early detection of suspicious lung nodules is crucial for patient treatment planning, management, and improving outcomes. Many approaches for lung nodule segmentation and…

Image and Video Processing · Electrical Eng. & Systems 2025-04-10 Tejas Sudharshan Mathai , Benjamin Hou , Ronald M. Summers

Multi-slice magnetic resonance images of the fetal brain are usually contaminated by severe and arbitrary fetal and maternal motion. Hence, stable and robust motion correction is necessary to reconstruct high-resolution 3D fetal brain…

Image and Video Processing · Electrical Eng. & Systems 2022-09-23 Wen Shi , Haoan Xu , Cong Sun , Jiwei Sun , Yamin Li , Xinyi Xu , Tianshu Zheng , Yi Zhang , Guangbin Wang , Dan Wu

Terminal ductal lobular unit (TDLU) involution is the regression of milk-producing structures in the breast. Women with less TDLU involution are more likely to develop breast cancer. A major bottleneck in studying TDLU involution in large…

We present photometric reverberation mapping of the narrow-line Seyfert 1 galaxy ESO399-IG20 performed with the robotic 15 cm telescope VYSOS-6 at the Cerro Armazones Observatory. Through the combination of broad- and narrow-band filters we…

Cosmology and Nongalactic Astrophysics · Physics 2013-03-18 F. Pozo Nuñez , C. Westhues , M. Ramolla , C. Bruckmann , M. Haas , R. Chini , K. Steenbrugge , R. Lemke , M. Murphy

We present the analysis of high angular resolution observations of the triple Asteroid (87) Sylvia collected with three 8-10 m class telescopes (Keck, VLT, Gemini North) and the Hubble Space Telescope. The moons' mutual orbits were derived…

Earth and Planetary Astrophysics · Physics 2014-07-07 J. Berthier , Frédéric Vachier , Franck Marchis , Josef Durech , Benoit Carry

2D and 3D tumor features are widely used in a variety of medical image analysis tasks. However, for chemotherapy response prediction, the effectiveness between different kinds of 2D and 3D features are not comprehensively assessed,…

Image and Video Processing · Electrical Eng. & Systems 2023-04-18 Neman Abdoli , Ke Zhang , Patrik Gilley , Xuxin Chen , Youkabed Sadri , Theresa C. Thai , Lauren E. Dockery , Kathleen Moore , Robert S. Mannel , Yuchen Qiu

In this paper, we study Riemannian metrics on the three-dimensional lens spaces that are deformations of the standard Riemannian metric along the fibers of the Hopf fibration. In other words, these metrics are axisymmetric. There is a…

Differential Geometry · Mathematics 2026-03-31 Alexey Podobryaev

Galaxy redshift surveys provide a distorted picture of the universe due to the non-Hubble component of galaxy motions. By measuring such distortions in the linear regime one can constrain the quantity $\beta = \Omega^{0.6}/b$ where $\Omega$…

Astrophysics · Physics 2009-10-28 J. Loveday , G. Efstathiou , S. J. Maddox , B. A. Peterson

This paper addresses a fundamental challenge in 3D medical image processing: how to deal with imaging thickness. For anisotropic medical volumes, there is a significant performance gap between thin-slice (mostly 1mm) and thick-slice (mostly…

Computer Vision and Pattern Recognition · Computer Science 2020-10-12 Jiancheng Yang , Yi He , Xiaoyang Huang , Jingwei Xu , Xiaodan Ye , Guangyu Tao , Bingbing Ni

Patient-specific 3D spine models serve as a foundation for spinal treatment and surgery planning as well as analysis of loading conditions in biomechanical and biomedical research. Despite advancements in imaging technologies, the…

Image and Video Processing · Electrical Eng. & Systems 2024-12-09 Lara Blomenkamp , Ivanna Kramer , Sabine Bauer , Kevin Weirauch , Dietrich Paulus

Robust localization of lymph nodes (LNs) in multiparametric MRI (mpMRI) is critical for the assessment of lymphadenopathy. Radiologists routinely measure the size of LN to distinguish benign from malignant nodes, which would require…

Image and Video Processing · Electrical Eng. & Systems 2025-04-08 Tejas Sudharshan Mathai , Sungwon Lee , Thomas C. Shen , Zhiyong Lu , Ronald M. Summers

We present observations of the double-peaked broad H$\alpha$ profile emitted by the active nucleus of NGC 7213 using the the Gemini South Telescope in 13 epochs between 2011 September 27 and 2013 July 23. This is the first time that the…

Astrophysics of Galaxies · Physics 2017-08-17 J. S. Schimoia , T. Storchi-Bergmann , C. Winge , R. S. Nemmen , M. Eracleous

Natural slender structures, such as plant leaves, petals, and tendrils, often exhibit complex three-dimensional (3D) morphologies-including twisting, helical coiling, and saddle-bending-driven by differential growth. The resulting internal…

Soft Condensed Matter · Physics 2025-06-24 Hao Liu , Mingwu Li , Dabiao Liu