155 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP17 papers
- Kavli Institute for the Physics and Mathematics of the UniverseJP14 papers
- National Astronomical Observatory of JapanJP12 papers
- Kindai UniversityJP11 papers
- Nagoya Institute of TechnologyJP7 papers
- Shinshu UniversityJP7 papers
- The Graduate University for Advanced Studies, SOKENDAIJP7 papers
- Japan Aerospace Exploration AgencyJP5 papers
- Toho UniversityJP5 papers
- Institute of Space and Astronautical ScienceJP4 papers
- Pennsylvania State UniversityUS4 papers
- Drexel UniversityUS3 papers
36 papers
Identifying Effective Program Comprehension Strategies through Gaze Transitions over Syntactic Elements
Kyogo Horikawa, Hidetake Uwano, Haruhiko Yoshioka
Program comprehension is a central research topic in software engineering, focusing on how developers understand a program's structure, behavior, and intent. Eye-tracking studies h…
eye2vec: Learning Distributed Representations of Eye Movement for Program Comprehension Analysis
Haruhiko Yoshioka, Kazumasa Shimari, Hidetake Uwano +1
This paper presents eye2vec, an infrastructure for analyzing software developers' eye movements while reading source code. In common eye-tracking studies in program comprehension,…
Survey of Gravitationally lensed Objects in HSC Imaging (SuGOHI) -- VII. Discovery and Confirmation of Three Strongly Lensed Quasars
Anton T. Jaelani, Cristian E. Rusu, Issha Kayo +13
We present spectroscopic confirmation of three new two-image gravitationally lensed quasars, compiled from existing strong lens and X-ray catalogs. Images of HSC J091843.2702200…
Implications of the mild gas motion found with Hitomi in the core of the Perseus cluster
Liyi Gu, Kazuo Makishima, Ryoji Matsumoto +6
Based mainly on X-ray observations, studies are made on interactions between the intra-cluster medium (ICM) in clusters of galaxies and their member galaxies. Through (magneto)hydr…
Key-Aggregate Searchable Encryption, Revisited: Formal Foundations for Cloud Applications, and Their Implementation
Masahiro Kamimura, Naoto Yanai, Shingo Okamura +1
In the use of a cloud storage, sharing of data with efficient access control is an important requirement in addition to data security and privacy. Cui et al. (IEEE Trans. on Comp.…
Generation in singularity categories of hypersurfaces of countable representation type
Tokuji Araya, Kei-ichiro Iima, Maiko Ono +1
The Orlov spectrum and Rouquier dimension are invariants of a triangulated category to measure how big the category is, and they have been studied actively. In this paper, we inves…
Localization and delocalization of fermions in a background of correlated spins
Tetsuya Takaishi, Kazuhiko Sakakibara, Ikuo Ichinose +1
We study the (de)localization phenomena of one-component lattice fermions in spin backgrounds. The O(3) classical spin variables on sites fluctuate thermally through the ordinary n…
Spectroscopic Observations of the Outflowing Wind in the Lensed Quasar SDSS J1001+5027
Toru Misawa, Naohisa Inada, Masamune Oguri +4
We performed spectroscopic observations of the small-separation lensed quasar SDSS J1001+5027, whose images have an angular separation , and placed c…
Resolving the Internal Structure of Circum-Galactic Medium using Gravitationally Lensed Quasars
Suzuka Koyamada, Toru Misawa, Naohisa Inada +3
We study the internal structure of the Circum-Galactic Medium (CGM), using 29 spectra of 13 gravitationally lensed quasars with image separation angles of a few arcseconds, which c…
On the ideal case of a conjecture of Auslander and Reiten
Olgur Celikbas, Kei-ichiro Iima, Arash Sadeghi +1
A celebrated conjecture of Auslander and Reiten claims that a finitely generated module that has no extensions with over an Artin algebra must be projective. Th…
Multi-Sightline Observation of Narrow Absorption Lines in Lensed Quasar SDSS J1029+2623
Toru Misawa, Cristian Saez, Jane C. Charlton +5
We exploit the widely-separated images of the lensed quasar SDSS J1029+2623 (=2.197, ) to observe its outflowing wind through two different sight…
Galaxy Infall by Interacting with its Environment: a Comprehensive Study of 340 Galaxy Clusters
Liyi Gu, Zhonglue Wen, Poshak Gandhi +7
To study systematically the evolution on the angular extents of the galaxy, ICM, and dark matter components in galaxy clusters, we compiled the optical and X-ray properties of a sa…
Subaru Telescope adaptive optics observations of gravitationally lensed quasars in the Sloan Digital Sky Survey
Cristian E. Rusu, Masamune Oguri, Yosuke Minowa +12
We present the results of an imaging observation campaign conducted with the Subaru Telescope adaptive optics system (IRCS+AO188) on 28 gravitationally lensed quasars (23 doubles,…
Perfect linkage of Cohen--Macaulay modules over Cohen--Macaulay rings
Kei-ichiro Iima, Ryo Takahashi
In this paper, we introduce and study the notion of linkage by perfect modules, which we call perfect linkage, for Cohen-Macaulay modules over Cohen--Macaulay local rings. We explo…
Resolving the Clumpy Structure of the Outflow Winds in the Gravitationally Lensed Quasar SDSS J1029+2623
Toru Misawa, Naohisa Inada, Masamune Oguri +4
We study the geometry and the internal structure of the outflowing wind from the accretion disk of a quasar by observing multiple sightlines with the aid of strong gravitational le…
Adaptive optics observations of the gravitationally lensed quasar SDSS J1405+0959
Cristian E. Rusu, Masamune Oguri, Yosuke Minowa +4
We present the result of Subaru Telescope multi-band adaptive optics observations of the complex gravitationally lensed quasar SDSS J1405+0959, which is produced by two lensing gal…
Remarks on torsionfreeness and its applications
Tokuji Araya, Kei-ichiro Iima
In this article, we shall characterize torsionfreeness of modules with respect to a semidualizing module in terms of the Serre's condition (S_n). As its applications, we give a cha…
Discovery of Four Doubly Imaged Quasar Lenses from the Sloan Digital Sky Survey
Naohisa Inada, Masamune Oguri, Cristian E. Rusu +2
We report the discovery of four doubly imaged quasar lenses. All the four systems are selected as lensed quasar candidates from the Sloan Digital Sky Survey data. We confirm their…
Probing of the Interactions Between the Hot Plasmas and Galaxies in Clusters from z=0.1 to 0.9
Liyi Gu, Poshak Gandhi, Naohisa Inada +7
Based on optical and X-ray data for a sample of 34 relaxed rich clusters of galaxies with redshifts of 0.1-0.9, we studied relative spatial distributions of the two major baryon co…
Spectroscopy along Multiple, Lensed Sightlines through Outflowing Winds in the Quasar SDSS J1029+2623
Toru Misawa, Naohisa Inada, Ken Ohsuga +3
We study the origin of absorption features on the blue side of the C IV broad emission line of the large-separation lensed quasar SDSS J1029+2623 at z_em ~ 2.197. The quasar images…
The quasar-galaxy cross SDSS J1320+1644: A probable large-separation lensed quasar
Cristian E. Rusu, Masamune Oguri, Masanori Iye +5
We report the discovery of a pair of quasars at , with a separation of $8\farcs585\pm0\farcs002$. Subaru Telescope infrared imaging reveals the presence of an elliptical a…
The Sloan Digital Sky Survey Quasar Lens Search. VI. Constraints on Dark Energy and the Evolution of Massive Galaxies
Masamune Oguri, Naohisa Inada, Michael A. Strauss +12
We present a statistical analysis of the final lens sample from the Sloan Digital Sky Survey Quasar Lens Search (SQLS). The number distribution of a complete subsample of 19 lensed…
The Sloan Digital Sky Survey Quasar Lens Search. V. Final Catalog from the Seventh Data Release
Naohisa Inada, Masamune Oguri, Min-Su Shin +13
We present the final statistical sample of lensed quasars from the Sloan Digital Sky Survey (SDSS) Quasar Lens Search (SQLS). The well-defined statistical lens sample consists of 2…
The Chandra view of the Largest Quasar Lens SDSS J1029+2623
Naomi Ota, Masamune Oguri, Xinyu Dai +6
We present results from Chandra observations of the cluster lens SDSS J1029+2623 at z_l=0.58, which is a gravitationally lensed quasar with the largest known image separation. We c…