Buckling Strength of Cold-Formed Circular Steel Column Subjected to Axial Load

In this study, the global buckling behavior of a cold-formed circular steel column was discussed with a focus on the effects of its mechanical properties and initial imperfections on the behavior. As the first step, the stress–strain curves of the column under tensile and compressive loads as well as its residual stresses were investigated. Subsequently, a finite element analysis was conducted to clarify if the analysis properly simulated the stub column behavior. The analysis results obtained using measured compressive stress–strain curves and residual stresses agreed well with experimental results. Finally, another finite element analysis was performed on the long column buckling to examine the effects of its mechanical properties and initial imperfections. It was shown that the global buckling strength was affected not only by imperfections such as residual stress and out-of-straightness but also by the anisotropic mechanical properties of the material

学科横断プロジェクトのドキュメンテーションとデザイン教育システムに関する研究

本研究は、平成23年度共同研究を受け、より全学的視野から、教育プロセスの可視化を図るとともに、データの高度なデザイン化を図ることを目的とする。具体的には、（1）記録スタッフを全学的に募集し、分野横断的な記録システムを構築する。（2）多様なデザイン分野の視点に立ち、ドキュメンテーションのデザイン化、ソーシャル・ネットワーク化を行う。（3）ドキュメンテーション・デザイン教育分野の可能性を探り、カリキュラム成立に向けた分野横断的実践を行う。平成23年度共同研究に基づき、ドキュメンテーションにおける問題点を抽出するとともに、改善への指針を固める。特に、ドキュメンテーション・デザイン教育に関しては、大学カリキュラムへの導入を図り、体系的なスタッフ育成システムを構築する。本稿では平成24年度に実施されたドキュメンテーションを事例に、ドキュメンテーション・デザイン教育への取り組みについて報告する。対象となるドキュメンテーションは以下の通りである。（1）方丈の庵プロジェクト（平成24年6月17日）、（2）布引音楽祭（平成24年8月4日）、（3）ちびっこうべ（平成24年8月24日〜10月6日）、（4）第9回学園都市学校連携アートワークショップ（平成24年9月16日）、（5）神戸芸術工科大学卒展リアルタイム・ドキュメンテーション（平成25年2月7日〜11日）。This study has the purpose that we have a plan of visualizing the design curriculum and constructs the system of documentation design. The methods are as follows: (1) Constructing the data system by recruiting documentation staffs form some departments in Kobe design University, (2) From diversity perspective points, Designing a documentation and sharing the documentation via social network system, (3) Researching the possibility of documentation design education and constituting a documentation curriculum.Based form the research in 2012, we extract various issues and decide solutions. In particular, about documentation design education, we introduce the curriculum and construct the system of training documentation staffs.We report the documentation in 2012 as follows: (1) The project of HOJO-no-IORI (June 17), (2) Festival of music in NUNOBIKI, Kobe (August 4), (3) CHIBIC-KOBE (August 24- October 6), (4) Realtime documentation of exhibition in Kobe Design University (February 7-11, 2013)

The ASTRO-H X-ray Observatory

The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions initiated by the Institute of Space and Astronautical Science (ISAS). ASTRO-H will investigate the physics of the high-energy universe via a suite of four instruments, covering a very wide energy range, from 0.3 keV to 600 keV. These instruments include a high-resolution, high-throughput spectrometer sensitive over 0.3-2 keV with high spectral resolution of Delta E < 7 eV, enabled by a micro-calorimeter array located in the focal plane of thin-foil X-ray optics; hard X-ray imaging spectrometers covering 5-80 keV, located in the focal plane of multilayer-coated, focusing hard X-ray mirrors; a wide-field imaging spectrometer sensitive over 0.4-12 keV, with an X-ray CCD camera in the focal plane of a soft X-ray telescope; and a non-focusing Compton-camera type soft gamma-ray detector, sensitive in the 40-600 keV band. The simultaneous broad bandpass, coupled with high spectral resolution, will enable the pursuit of a wide variety of important science themes.Comment: 22 pages, 17 figures, Proceedings of the SPIE Astronomical Instrumentation "Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray

Hitomi (ASTRO-H) X-ray Astronomy Satellite

The Hitomi (ASTRO-H) mission is the sixth Japanese x-ray astronomy satellite developed by a large international collaboration, including Japan, USA, Canada, and Europe. The mission aimed to provide the highest energy resolution ever achieved at E  >  2  keV, using a microcalorimeter instrument, and to cover a wide energy range spanning four decades in energy from soft x-rays to gamma rays. After a successful launch on February 17, 2016, the spacecraft lost its function on March 26, 2016, but the commissioning phase for about a month provided valuable information on the onboard instruments and the spacecraft system, including astrophysical results obtained from first light observations. The paper describes the Hitomi (ASTRO-H) mission, its capabilities, the initial operation, and the instruments/spacecraft performances confirmed during the commissioning operations for about a month