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In this work, we study the potential of the Cherenkov Telescope Array (CTA) for the detection of Galactic dark matter (DM) subhalos. We focus on low-mass subhalos that do not host any baryonic content and therefore lack any multiwavelength…

High Energy Astrophysical Phenomena · Physics 2021-06-08 Javier Coronado-Blázquez , Michele Doro , Miguel A. Sánchez-Conde , Alejandra Aguirre-Santaella

Tomography of the solar corona can provide cruicial constraints for models of the low corona, unique information on changes in coronal structure and rotation rates, and a valuable boundary condition for models of the heliospheric solar…

Instrumentation and Methods for Astrophysics · Physics 2015-09-11 Huw Morgan

We perform weak lensing tomographic peak studies using the first-year shear data from Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) survey. The effective area used in our analyses after field selection, mask and boundary exclusions…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-26 Xiangkun Liu , Shuo Yuan , Chuzhong Pan , Tianyu Zhang , Qiao Wang , Zuhui Fan

Feature tracking Cardiac Magnetic Resonance (CMR) has recently emerged as an area of interest for quantification of regional cardiac function from balanced, steady state free precession (SSFP) cine sequences. However, currently available…

Computer Vision and Pattern Recognition · Computer Science 2017-04-13 Davis M. Vigneault , Weidi Xie , David A. Bluemke , J. Alison Noble

Using an analytic model calibrated against numerical simulations, we calculate the central densities of dark matter halos in a ``conventional'' cold dark matter model with a cosmological constant (LCDM) and in a ``tilted'' model (TLCDM)…

Astrophysics · Physics 2007-05-23 S. M. Khairul Alam , James S. Bullock , David H. Weinberg

Recent advances in deep learning have greatly facilitated the automated segmentation of ultrasound images, which is essential for nodule morphological analysis. Nevertheless, most existing methods depend on extensive and precise annotations…

Computer Vision and Pattern Recognition · Computer Science 2024-04-24 Xingyue Zhao , Zhongyu Li , Xiangde Luo , Peiqi Li , Peng Huang , Jianwei Zhu , Yang Liu , Jihua Zhu , Meng Yang , Shi Chang , Jun Dong

Obtaining a large amount of labeled data in medical imaging is laborious and time-consuming, especially for histopathology. However, it is much easier and cheaper to get unlabeled data from whole-slide images (WSIs). Semi-supervised…

Image and Video Processing · Electrical Eng. & Systems 2020-08-13 Zeyu Gao , Pargorn Puttapirat , Jiangbo Shi , Chen Li

Cosmic shear statistics, such as the two-point correlation function (2PCF), can be evaluated with the PDF-SYM method instead of the traditional weighted-sum approach. It makes use of the full PDF information of the shear estimators, and…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-18 Zhenjie Liu , Jun Zhang , Hekun Li , Zhi Shen , Cong Liu

Hole detection is a crucial task for monitoring the status of wireless sensor networks (WSN) which often consist of low-capability sensors. Holes can form in WSNs due to the problems during placement of the sensors or power/hardware…

Networking and Internet Architecture · Computer Science 2022-04-04 Se-Hang Cheong , Kim-Hou Ng , Yain-Whar Si

It has long been known that the high-speed stream (HSS) peak velocity at Earth directly depends on the area of the coronal hole (CH) on the Sun. Different degrees of association between the two parameters have been shown by many authors. In…

Intracranial hemorrhage (ICH) is a life-threatening condition that requires rapid and accurate diagnosis to improve treatment outcomes and patient survival rates. Recent advancements in supervised deep learning have greatly improved the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-05 Pascal Spiegler , Amirhossein Rasoulian , Yiming Xiao

This paper presents an approach for automatic detection of Munro's Microabscess in stratum corneum (SC) of human skin biopsy in order to realize a machine assisted diagnosis of Psoriasis. The challenge of detecting neutrophils in presence…

Computer Vision and Pattern Recognition · Computer Science 2018-08-22 Anabik Pal , Akshay Chaturvedi , Utpal Garain , Aditi Chandra , Raghunath Chatterjee , Swapan Senapati

Weakly-supervised segmentation (WSS) has emerged as a solution to mitigate the conflict between annotation cost and model performance by adopting sparse annotation formats (e.g., point, scribble, block, etc.). Typical approaches attempt to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-25 Y. Liu , L. Lin , K. K. Y. Wong , X. Tang

Weakly Supervised Object Localization (WSOL), which aims to localize objects by only using image-level labels, has attracted much attention because of its low annotation cost in real applications. Current studies focus on the Class…

Computer Vision and Pattern Recognition · Computer Science 2025-05-09 Xi Yang , Songsong Duan , Nannan Wang , Xinbo Gao

In this study, we describe and evaluate shape measures for distinguishing between coronal holes and filament channels as observed in Extreme Ultraviolet (EUV) images of the Sun. For a set of well-observed coronal hole and filament channel…

Solar and Stellar Astrophysics · Physics 2014-08-13 M. Reiss , M. Temmer , T. Rotter , S. J. Hofmeister , A. M. Veronig

Detecting safety clothing and helmets is paramount for ensuring the safety of construction workers. However, the development of deep learning models in this domain has been impeded by the scarcity of high-quality datasets. In this study, we…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Fusheng Yu , Jiang Li , Xiaoping Wang , Shaojin Wu , Junjie Zhang , Zhigang Zeng

This is the second of a series of three papers that present a methodology with the aim of creating a set of maps of the coronal density over a period of many years. This paper describes a method for reconstructing the coronal electron…

Solar and Stellar Astrophysics · Physics 2019-08-22 Huw Morgan

Observations utilizing the ultraviolet capabilities of the Cosmic Origin Spectrograph (COS) onboard the Hubble Space Telescope are of unique value to the astronomy community. Spectroscopy down to 900 A with COS has enabled new science…

Instrumentation and Methods for Astrophysics · Physics 2024-06-12 Svea Hernandez , Andrei Igoshev , Jo Taylor , David Sahnow , Logan Jones

A method for automatically quantifying emphysema regions using High-Resolution Computed Tomography (HRCT) scans of patients with chronic obstructive pulmonary disease (COPD) that does not require manually annotated scans for training is…

Computer Vision and Pattern Recognition · Computer Science 2018-11-21 Isabel Pino Peña , Veronika Cheplygina , Sofia Paschaloudi , Morten Vuust , Jesper Carl , Ulla Møller Weinreich , Lasse Riis Østergaard , Marleen de Bruijne

We compare the efficiency of weak lensing-selected galaxy clusters counts and of the weak lensing bispectrum at capturing non-Gaussian features in the dark matter distribution. We use the halo model to compute the weak lensing power…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Joel Berge , Adam Amara , Alexandre Refregier
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