中文
相关论文

相关论文: Measuring filament orientation: a new quantitative…

200 篇论文

In the future International Linear Collider (ILC) experiment, high performance tracking is essential to its physics program including precision Higgs studies. One of major challenges for a detector such as the proposed International Large…

仪器与探测器 · 物理学 2015-06-16 Bo Li , Keisuke Fujii , Yuanning Gao

A method for quantitative analysis of local pattern strength and defects in surface self-assembly imaging is presented and applied to images of stripe and hexagonal ordered domains. The presented method uses "shapelet" functions which were…

计算机视觉与模式识别 · 计算机科学 2015-02-27 Robert Suderman , Daniel Lizotte , Nasser Mohieddin Abukhdeir

We present 850 {\mu}m thermal dust polarization observations with a resolution of 14.4"(~ 0.13 pc) towards an infrared dark cloud G16.96+0.27 using JCMT/POL-2. The average magnetic field orientation, which roughly agrees with the…

We consider the problem of estimating filamentary structure from planar point process data. We make some connections with computational geometry and we develop nonparametric methods for estimating the filaments. We show that, under weak…

In this paper a new technique is presented that extracts the geometry of lumbar vertebral bodies from spiral CT scans. Our new multi-step segmentation approach yields highly accurate and precise measurement of the bone mineral density (BMD)…

计算机视觉与模式识别 · 计算机科学 2017-05-23 Andre Mastmeyer , Klaus Engelke , Willi Kalender

A filament is a high density, connected region in a point cloud. There are several methods for estimating filaments but these methods do not provide any measure of uncertainty. We give a definition for the uncertainty of estimated filaments…

统计方法学 · 统计学 2013-12-10 Yen-Chi Chen , Christopher R. Genovese , Larry Wasserman

We present 850 $\mu$m polarization and $\rm C^{18}O (3-2)$ molecular line observations toward the X-shaped nebula in the California molecular cloud using the JCMT SCUBA-2/POL-2 and HARP instruments. The 850 $\mu$m emission shows that the…

星系天体物理 · 物理学 2023-07-12 Eun Jung Chung , Chang Won Lee , Woojin Kwon , Mario Tafalla , Shinyoung Kim , Archana Soam , Jungyeon Cho

We extend sharp direct and inverse approximation statements for kernel-based methods for finitely smooth kernels, i.e. those whose native spaces are norm-equivalent to Sobolev spaces. In particular, our inverse results are now formulated…

数值分析 · 数学 2025-12-22 Sara Avesani , Leevan Ling , Francesco Marchetti , Tizian Wenzel

Orientation mapping is a widely used technique for revealing the microstructure of a polycrystalline sample. The crystalline orientation at each point in the sample is determined by analysis of the diffraction pattern, a process known as…

数学物理 · 物理学 2017-10-11 Peter Mahler Larsen , Søren Schmidt

Magnetic field is the key physical quantity in solar physics as it controls all kinds of solar activity, ranging from nanoflares to big flares and coronal mass ejections (CMEs). However, so far only the magnetic field on the solar surface…

太阳与恒星天体物理 · 物理学 2025-11-21 P. F. Chen

Effective mixing of fluids at the microfluidic scale is important for future applications in biology, medicine, and chemistry. A promising type of micromixers are magnetic filaments, which can be activated by an external magnetic field.…

We would like to present a comprehensive study on the classification of iron ore pellets, aimed at identifying quality violations in the final product, alongside the development of an innovative imagebased measurement method utilizing the…

计算机视觉与模式识别 · 计算机科学 2025-06-16 Artem Solomko , Oleg Kartashev , Andrey Golov , Mikhail Deulin , Vadim Valynkin , Vasily Kharin

In diffuse molecular clouds, possible precursors of star-forming clouds, the effect of the magnetic field is unclear. In this work we compare the orientations of filamentary structures in the Polaris Flare, as seen through dust emission by…

星系天体物理 · 物理学 2016-08-24 G. V. Panopoulou , I. Psaradaki , K. Tassis

To cope with the high requirements during the computation of semantic segmentations of earth observation imagery, current state-of-the-art pipelines divide the corresponding data into smaller images. Existing methods and benchmark datasets…

计算机视觉与模式识别 · 计算机科学 2023-06-08 Sebastian Bullinger , Florian Fervers , Christoph Bodensteiner , Michael Arens

The large-scale structure of the Universe is characterised by a web-like structure made of voids, sheets, filaments, and knots. The structure of this so-called cosmic web is dictated by the local velocity shear tensor. In particular, the…

宇宙学与河外天体物理 · 物理学 2015-06-16 E. Tempel , N. I. Libeskind , Y. Hoffman , L. J. Liivamägi , A. Tamm

In recent years, there were studies on the omnipresence and structures of filaments in star-forming regions, and the role of their fragmentation in the process of star formation. However, only a few studies analysed the evolution of…

星系天体物理 · 物理学 2018-06-07 Roxana-Adela Chira

We study weak lensing properties of filaments that connect clusters of galaxies through large cosmological $N$-body simulations. We select 4639 halo pairs with masses higher than $10^{14}h^{-1}\mathrm{M}_\odot$ from the simulations and…

宇宙学与河外天体物理 · 物理学 2014-03-27 Yuichi Higuchi , Masamune Oguri , Masato Shirasaki

Maps of polarized dust emission of molecular clouds reveal the morphology of the magnetic field associated with star-forming regions. In particular, polarization maps of hub-filament systems show the distortion of magnetic field lines…

星系天体物理 · 物理学 2024-05-21 Domitilla Tapinassi , Daniele Galli , Marco Padovani , Henrik Beuther

The optical conductivity of graphene, bilayer graphene, and graphite in quantizing magnetic fields is studied. Both dynamical conductivities, longitudinal and Hall's, are analytically evaluated. The conductivity peaks are explained in terms…

介观与纳米尺度物理 · 物理学 2015-06-05 L. A. Falkovsky

The characterization of the internal structure of the superclusters of galaxies (walls, filaments and knots where the clusters are located) is paramount for understanding the formation of the Large Scale Structure and for outlining the…