Spectral Properties of Prompt Emission of Four Short Gamma-Ray Bursts Observed by the Suzaku-WAM and the Konus-Wind

We have performed a joint analysis of prompt emission from four bright short gamma-ray bursts (GRBs) with the Suzaku-WAM and the Konus-Wind experiments. This joint analysis allows us to investigate the spectral properties of short-duration bursts over a wider energy band with a higher accuracy. We find that these bursts have a high E$_{\rm peak}$, around 1 MeV and have a harder power-law component than that of long GRBs. However, we can not determine whether these spectra follow the cut-off power-law model or the Band model. We also investigated the spectral lag, hardness ratio, inferred isotropic radiation energy and existence of a soft emission hump, in order to classify them into short or long GRBs using several criteria, in addition to the burst duration. We find that all criteria, except for the existence of the soft hump, support the fact that our four GRB samples are correctly classified as belonging to the short class. In addition, our broad-band analysis revealed that there is no evidence of GRBs with a very large hardness ratio, as seen in the BATSE short GRB sample, and that the spectral lag of our four short GRBs is consistent with zero, even in the MeV energy band, unlike long GRBs. Although our short GRB samples are still limited, these results suggest that the spectral hardness of short GRBs might not differ significantly from that of long GRBs, and also that the spectral lag at high energies could be a strong criterion for burst classification.Comment: 23 pages, 6 figures, accepted for Publications of the Astronomical Society of Japa

異教科で協働できる教員を育成するための実践的研究（1） : 教科教育学専攻の共通科目の始動を通じて

本研究は，平成28 年度より始まった「教科教育学専攻」における新しい共通科目（「教科教育学研究方法論」，「教科教育学融合プロジェクト」，「教科教育学の実践的展開」，「教科教育学の実践的検証」）が始動する際に得られた知見を分析・考察し報告するもので，その全容は平成29 年３月に公開予定のホームページで公表される。本報告書は，その研究の要旨を，(1)　経緯について，(2)　各教科について，(3)　実践からの考察，(4)　理論からの考察，(5)　学生の振り返りからの考察の五点から述べる

FLImBrush: dynamic visualization of intraoperative free-hand fiber-based fluorescence lifetime imaging.

A free-hand scanning approach to medical imaging allows for flexible, lightweight probes to image intricate anatomies for modalities such as fluorescence lifetime imaging (FLIm), optical coherence tomography (OCT) and ultrasound. While very promising, this approach faces several key challenges including tissue motion during imaging, varying lighting conditions in the surgical field, and sparse sampling of the tissue surface. These challenges limit the coregistration accuracy and interpretability of the acquired imaging data. Here we report FLImBrush as a robust method for the localization and visualization of intraoperative free-hand fiber optic fluorescence lifetime imaging (FLIm). FLImBrush builds upon an existing method while employing deep learning-based image segmentation, block-matching based motion correction, and interpolation-based visualization to address the aforementioned challenges. Current results demonstrate that FLImBrush can provide accurate localization of FLIm point-measurements while producing interpretable and complete visualizations of FLIm data acquired from a tissue surface. Each of the main processing steps was shown to be capable of real-time processing (> 30 frames per second), highlighting the feasibility of FLImBrush for intraoperative imaging and surgical guidance. Current findings show the feasibility of integrating FLImBrush into a range of surgical applications including cancer margins assessment during head and neck surgery

A Report on Overseas Teaching Practicum by Graduate Students in Elementary / Secondary Schools in the United States

This is a report on Overseas Teaching Practicum by Graduate Students in Elementary / Secondary Schools in the United States. As globalization of the society has been accelerated in an unprecedented rate, children in the 21st century need to develop heightened awareness as global citizens; similarly, future teachers need to develop enhanced awareness and skills in teaching young global citizens in the future. For this purpose, Global Partnership School Center, Hiroshima University, launched an overseas teaching practicum by graduate students in elementary / secondary schools in the state of North Carolina, United States. Reviewing the process from pre-program workshop to post-program workshop, a multi-national international collaboration model in education was suggested

A Report on Overseas Teaching Practicum by Graduate Students in Elementary / Secondary Schools in the United States (II)

This is a second year's report on overseas teaching practicum by Japanese graduate students in elementary / secondary schools in the United States in September 2007. It awaits no discussion that future teachers need to develop enhanced awareness and skills in teaching young global citizens in the future. For this purpose, Global Partnership School Center, Hiroshima University, conducted a second-year overseas teaching practicum by education-major graduate students in the United States. Reviewing the teaching practices and the participants' self reports, it was found that this innovative opportunity helped them raise their cross-cultural awareness and gain confidence in teaching

Additional file 1 of Comprehensive evaluation of three-dimensional anatomy of perigastric vessels using enhanced multidetector-row computed tomography

Additional file 1: Fig. S1. Branching patterns of the celiac artery and the left gastric artery (LGA). Fig. S2. Running aspects of the hepatic artery relative to the portal vein (PV)