Analysis of the Socioeconomic Difficulties Affecting the Suicide Rate in Japan

This paper focuses on the drastic increase observed in the Japanese male suicide rate in the late 1990s and early 2000s and confirms unemployment and personal bankruptcy to be the associated socioeconomic factors behind the male suicide variation. Personal bankruptcy is also confirmed to be significant in the female suicide variation. The relationship is confirmed through a pooled data analysis by a middle-aged group and by prefecture. Further, the paper focused on the association between the unemployment rate and suicide mortality by incorporating the reasons for unemployment in the monthly regression. Next, we identified a significant association between male suicide variations and changes in some of the reasons for being unemployed. The interpretation of the results implies that the risk of unemployment among men has been mitigated by the unemployment insurance rather than the bias in the reasons reported and/or mental disorder in Japan.

Flankside plasma sheet isolation in the ionosphere for northward interplanetary magnetic field

The Tenth Symposium on Polar Science/Ordinary sessions: [OS] Space and upper atmospheric sciences, Wed. 4 Dec. / Institute of Statistics and Mathematics (ISM) Seminar room 2 (D304) (3rd floor

The behavior of the cusp in various solar wind conditions

The Tenth Symposium on Polar Science/Ordinary sessions: [OS] Space and upper atmospheric sciences, Wed. 4 Dec. /Entrance Hall (1st floor) at National Institute of Polar Research (NIPR

An Improvement of Computer Based Test System Based on TCExam for Usage with A Large Number of Concurrent Users

Computer-based test or assessment has been used widely, especially in the current COVID-19 pandemic, where many schools are conducting distance learning as well as distance examination. The need for a computer or software system to support education is inevitable. A range of solutions, from the free/open source software systems to the paid/proprietary ones have been publicly available. Still, an organization with limited resources prefers to find free or low-budget, while yet demanding reliable solutions. We have reported the use of the computer-based test in a new student recruitment test which is held country-wide. We developed the system based on TCExam, a free and open source computer-based test software, and successfully fulfilled the requirements, but with some tweaks. We found that the TCExam has a performance degradation when used by a large number of examinees concurrently, especially during specific phases during the test. This paper reports the result of our investigation to address the problem and suggests some modifications to the base codes as well as a recommendation of the hardware configuration. We evaluated the modified system in a simulated environment. We successfully achieved up to 56% performance gain using the modified system

Contributing Processes to Arctic Temperature Amplification for a Range of Forcing in MIROC GCM

第3回極域科学シンポジウム/第35回極域気水圏シンポジウム 11月30日（金） 国立国語研究所 ２階多目的

Observational verification of a unipolar field-aligned current system associated with IMF BY triggered theta auroras: A systematic survey for 1998-2004

第6回極域科学シンポジウム[OS] 宙空圏11月16日（月）　国立極地研究所１階交流アトリウ

The small GTPase ADP-ribosylation factor 6 negatively regulates dendritic spine formation

AbstractActin cytoskeletal reorganization and membrane trafficking are important for spine morphogenesis. Here we investigated whether the small GTPase, ADP-ribosylation factor 6 (ARF6), which regulates actin dynamics and peripheral vesicular trafficking, is involved in the regulation of spine formation. The developmental expression pattern of ARF6 in mouse hippocampus was similar to that of the post-synaptic density protein-95, and these molecules colocalized in mouse hippocampal neurons. Overexpression of a constitutively active ARF6 mutant in cultured hippocampal neurons decreased the spine density, whereas a dominant-negative ARF6 mutant increased the density. These results demonstrate a novel function for ARF6 as a key regulator of spine formation

A Research on Concepts of Particle for Substance in High School Chemistry

中学校理科、並びに高校化学における基礎概念の物質の粒子概念や原子・分子の粒子としての表現についてある普通科高校の高校生1年から3年までの全クラスの生徒997名対象に、イメージ図を用いて理解度を測定する目的で調査を行い、イメージとして物質の粒子概念が高校生にどうとらえられているかを明らかにした。この結果より全般的に基礎知識の理解とその応用について不十分であることがわかった。また、全学年で化学変化と物理変化の違いについてイメージができておらず、化学の本質の理解の点で問題点があることがわかった。We have carried out a research on concepts of particle for substance in high school chemistry and junior high school natural science by questionair method with image schema. One of the purposes is the measurement of high school students' understanding depth on substance aas particles. The result shows that many students cannot distinguish pure substance, pure element, pure compound and so many students do not understand physical and chemical changes. Our conclusion is that there are some issues on chemistry culiculum and textbooks in the basic and fundamental level

SuperDARN future plan for Phase X JARE project

The Tenth Symposium on Polar Science/Special session: [S] Future plan of Antarctic research: Towards phase X of the Japanese Antarctic Research Project (2022-2028) and beyond, Tue. 3 Dec. / Entrance Hall (1st floor) at National Institute of Polar Research (NIPR

Dipole tilt effects on the magnetosphere‐ionosphere convection system during interplanetary magnetic field B Y ‐dominated periods: MHD modeling

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95426/1/jgra20334.pd