46 research outputs found
Pre-seismic ionospheric anomalies detected before the 2016 Taiwan earthquake
No full textCorresponding Author : Ken UmenoShin‐itiro Goto, Ryoma Uchida, Kiyoshi Igarashi, Chia‐Hung Chen, Minghui Kao and Ken Umeno (2019). Pre‐seismic ionospheric anomalies detected before the 2016 Taiwan earthquake. Journal of Geophysical Research: Space Physics. https://doi.org/10.1029/2019JA02664
Sakamoto Ryoma: the Nietzschean hero of the Meiji Restoration
No full textThis thesis is a Nietzschean analysis of Meiji Restoration hero Sakamoto Ryoma (1835 - 1867). It discusses the life and times of Sakamoto and basic theories of Friedrich Nietzsche (1844 - 1900). It argues that despite vastly different historical, cultural, and ideological backgrounds, Sakamoto and Nietzsche were modern men with similar ideas, and that Sakamoto lived those ideas. The author demonstrates that Sakamoto perceived Confucianism-based social and political systems under Tokugawa feudalism as threatening to Japan’s sovereignty in an age of Western imperialism, and that through a Nietzschean “will to power” and resolve to “live dangerously” he helped overthrow the Tokugawa Shogunate. The paper compares Sakamoto’s rejection of Confucian-samurai values with Nietzsche’s rejection of Christian values, and Nietzsche’s announcement of the death of God with Sakamoto’s heralding of the death of Tokugawa feudalism. Pointing out the importance that Sakamoto and Nietzsche placed on truth, individualism, self-reliance, and self-determination, the paper argues that Sakamoto, embodying Nietzsche’s “higher man,” created new values and embraced ideas resembling Nietzsche’s doctrine of free death to overcome chaos and create meaning through revolution
Collective Thomson scattering diagnostic with in situ calibration system for velocity space analysis in large helical device
No full text0000-0002-2752-3333A collective Thomson scattering (CTS) diagnostic with a ±3 GHz band around a 77 GHz gyrotron probe beam was developed to measure the velocity distribution of bulk and fast ions in high-temperature plasmas. We propose a new in situ calibration method for a CTS diagnostic system combined with a raytracing code. The method is applied in two situations for electron cyclotron emission in plasmas and in a CTS diagnostic with a modulated probe beam. Experimental results highlight the importance of refraction correction in probe and receive beams. The CTS spectrum is measured with the in situ calibrated CTS receiver and responds to fast ions originating from a tangential neutral beam with an energy of 170 keV and from a perpendicular beam with an energy of 60 keV, both in the large helical device. From a velocity space analysis model, the results elucidate the measured anisotropic CTS spectrum caused by fast ions. The calibration methods and analyses demonstrated here are essential for CTS, millimeter-wave diagnostics, and electron cyclotron heating required under fusion reactor conditions.journal articl
Characteristics of Magnetic Fluctuations during Magnetic Reconnection in Counter-Helicity Spheromak Merging Experiment
No full text回転磁場法を用いた弱電離プラズマ中の長パルス磁気リコネクション実験の実現
No full text学位の種別: 課程博士審査委員会委員 : （主査）東京大学准教授 井 通暁, 東京大学教授 大崎 博之, 東京大学教授 小野 靖, 東京大学准教授 小野 亮, 宇宙航空研究開発機構准教授 清水 敏文University of Tokyo(東京大学
Simple infinite presentations for the mapping class group of a compact non-orientable surface
No full textOmori and the author have given an infinite presentation for the mapping
class group of a compact non-orientable surface. In this paper, we give more
simple infinite presentations for this group.Comment: 11 pages, 5 figure
Dataset: An empirical study on self-admitted technical debt in modern code review
No full textThis data was used in the IST paper "An Empirical Study on Self-Admitted Technical Debt in Modern Code Review". The program to use this data is published in GitHub (https://github.com/Yutaro-Kashiwa/ReviewSATD_RP)
When you use this data in your research, please cite the following papers:
```
@article{Kashiwa:IST:2022:SATD_Review,
author = {Yutaro Kashiwa and
Ryoma Nishikawa and
Yasutaka Kamei and
Masanari Kondo and
Emad Shihab and
Ryosuke Sato and
Naoyasu Ubayashi},
title = {An empirical study on self-admitted technical debt in modern code
review},
journal = {Information and Software Technology},
volume = {146},
pages = {106855},
year = {2022},
url = {https://doi.org/10.1016/j.infsof.2022.106855},
doi = {10.1016/j.infsof.2022.106855}
}
``
AN INFINITE PRESENTATION FOR THE MAPPING CLASS GROUP OF A NON-ORIENTABLE SURFACE WITH BOUNDARY
No full textWe give an infinite presentation for the mapping class group of a non-orientable surface with boundary components. The presentation is a generalization of the presentation given by the second author [16]. We also give a finite presentation for the mapping class group to obtain the infinite presentation
Action of Alkylphosphates on the Function of the Circulatory System Part 2. Action of Alkylphosphates on the Heart of Experimental Frog
No full textBy studying the action of alkylposphates on the isolated frog heart (the Straub-Fuhner method) and on the frog heart in vivo (Engelmann's method), the author obtained the following results: 1. The auriculo-ventricular block occurs whan exposed to Parathion at a low concentration. 2. In the case of Parathion at a higher concentration there occurs a decrease in the amplitude of heart-beat, and further on brings about the diastolic cessation. 3. Such changes as mentioned above do not return to normal unless properly treated. 4. Atropine and interceptors of the autonomic nerves can well act antagonistically to the action of Parathion. 5. Epinephrine acts antagonistically against Parathion. 6. Acetylcholine and ergotamine act as to invigorate the action of Parathion. 7. Diazinon and Chlorthion act more or less in the same manner as Parathion
Action of Alkylphosohates on the Function of the Circulatory System Part 1. Electrocardiographic Studies of Parathion Poisoning
No full textBy examining the electrocardiograms from the patients and experimental animals of Parathion poisoning, the author obtained the following results: 1. Out of six patients with acute (manifested) Parathion poisoning there one with a decrease in ST segment and with a complication of the Adams-Stokes syndrome due to the disturbances in the auriculo-ventricular conduction. 2. In the latent cases of poisoning an elevation in T-wave could be observed. 3. Of the acute cases of experimental animals with a sinus bradicardia, an elevation in T-wave, a prolongation of PQ interval and auriculo-ventricular blocking were observed. 4. In chronic cases of experimental rabbits an elevation in T-wave could be observed. 5. These pathological changes mentioned above appear to be due to the action of acetylcholine accumulated by Parathion poisoning
