- 著者
- Sho SASAKI Masaki FUJIMOTO Hajime YANO Takeshi TAKASHIMA Yasumasa KASABA Yukihiro TAKAHASHI Jun KIMURA Yuichi TSUDA Ryu FUNASE Osamu MORI Stefano CAMPAGNOLA Yasuhiro KAWAKATSU
- 出版者
- THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES
- 雑誌
- TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN (ISSN:18840485)
- 巻号頁・発行日
- vol.10, no.ists28, pp.Tk_37-Tk_40, 2012 (Released:2013-06-07)
EJSM (Europa Jupiter System Mission) is an international Jovian system mission with three spacecraft. Coordinated observation of Jovian magnetosphere is one of the important targets of the mission in addition to icy satellites, atmosphere, and the interior of Jupiter. JAXA will take a role on the magnetosphere spinner JMO (Jupiter Magnetospheric Orbiter), whereas ESA will launch JGO (Jupiter Ganymede Orbiter) and NASA will be responsible for JEO (Jupiter Europa Orbiter). One possibility is to combine JMO with a proposed solar sail mission of JAXA for Jupiter and one of Trojan asteroids. Since Trojan asteroids could be representing raw solid materials of Jupiter or at least outer solar system bodies,involvement of Trojan observation should enlarge the scope and enhance the quality of EJSM.
- 著者
- 角 能 高橋 幸裕 Yoku KADO Yukihiro TAKAHASHI 東京大学大学院人文社会系研究科 尚美学園大学総合政策学部 The University of Tokyo Shobi University
- 出版者
- 尚美学園大学総合政策学部総合政策学会
- 雑誌
- 尚美学園大学総合政策論集 = Shobi journal of policy studies, Shobi University (ISSN:13497049)
- 巻号頁・発行日
- vol.24, pp.1-16, 2017-06-30
本稿は認可保育所運営への株式会社の参入という保育の準市場化が、公立保育所と私立保育所との間の対自治体関係の違いに与える影響を、自治体の保育担当職員と私立(民営)保育所の園長に対する聞き取り調査の結果に基づいて分析した。株式会社が認可保育所運営に参入している自治体では、株式会社運営の保育所は、公立保育所や社会福祉法人運営保育所に比べて保育行政への参加において劣位に置かれている一方、障害児や処遇困難ケースは公立保育所と私立保育所とで等しく引き受けていることを明らかにした。対照的に、株式会社が認可保育所運営に参入していない自治体では、私立保育所の圧力団体の力が強く、障害児や処遇困難ケースの引き受け等の自治体からの負担の重い要請は公立保育所が優先的に引き受けていた。This paper analyzes how quasi-market, for-profit companies running authorized nursery schools, influences structural relations between public nursery schools and private ones against local authorities, based on interview for nursery staff at private schools and local government workers.At local authority, for-profit companies run nursery schools, they have more disadvantageous position than public ones and those run by shakai-fukushi-houjin on participating in government as nursery care. On one hand, they accept offer from local authorities about nursery care of child with disabilities or difficult cases at the same extent as public ones.In contrast, as local authority, with no nursery school run by for-profit company, as strong lobby group between private nursery schools against local authority, public nursery school mainly accept nursery care of child with disabilities or difficult cases.
- 著者
- Loren Joy De Vera Estrebillo Mitsuteru Sato Yukihiro Takahashi Hisayuki Kubota Kozo Yamashita Junichi Hamada Joel Marciano
- 雑誌
- 日本地球惑星科学連合2019年大会
- 巻号頁・発行日
- 2019-03-14
The Philippines is one of the most disaster-hit countries in the world. Its location in the western North Pacific (WNP) subjects it to numerous tropical cyclones (TC) each year that pose risk to lives, properties and infrastructures. There has been a significant development in the accuracy of TC track forecast that cross and/or make landfall within the Philippine Area of Responsibility (PAR) over the years with the use of ground-based synoptic observations, weather radars, and meteorological satellites. However, prediction of TC intensity remains a significant challenge. Lightning activity is an indicator of the dynamics and microphysics in thunderstorms, as well as severe weather phenomena, such as TCs and torrential rainfall among others. Recent studies suggest that lightning activity in tropical cyclones can give predictive information about its intensity development. Thus, a ground-based lightning observation system (V-POTEKA) has been developed, and it has been installed at three stations in the Philippines, Guam, and Palau to continuously monitor lightning activity in the WNP region since September 2017. The V-POTEKA system uses an event-trigger method that detects radio wave pulses from lightning discharges in the very low frequency (VLF) range of 1-50 kHz. It also consists of an automatic weather station (AWS), VLF sensors, and an automatic data-processing unit. The V-POTEKA system analyzes lightning data, extracts pertinent information, i.e., peak amplitude and time of the triggered waveform, and transmits data to a server through 3G communication. A geolocation software using the time-of-arrival method is being developed using the 3 sites along the WNP region. Further analysis will be conducted by incorporating data from other stations (Sapporo, Japan and Los Banos, Philippines), and an improved geolocation software will be used to investigate the relationship between the lightning activity and typhoon intensification during the dropsonde observation campaign conducted in September 2018.
- 著者
- Mitsuteru Sato Yukihiro Takahashi Makoto Suzuki Atsushi Yamazaki Tomoo Ushio
- 出版者
- 一般社団法人 電気学会
- 雑誌
- 電気学会論文誌A(基礎・材料・共通部門誌) (ISSN:03854205)
- 巻号頁・発行日
- vol.131, no.12, pp.1000-1005, 2011-12-01 (Released:2011-12-01)
- 参考文献数
- 15
- 被引用文献数
- 6 10
Six-channel spectrophotometers (PH) are the science instruments of JEM-GLIMS to measure absolute intensity of the emission originated from lightning discharges and upper atmospheric transient luminous events (TLEs). PH unit-1 (PH-U1) consists of four spectrophotometer channels named from PH1 to PH4, while PH unit-2 (PH-U2) two spectrophotometer channels named PH5 and PH6. Optical filters of these spectrophotometers are selected to detect TLE emission lines of N2 1PG, N2 2PG, N2+ 1NG, and N2 LBH. Since the bandwidth of the optical filter of PH2, 3, 5, and 6 is 10 nm and since PH1 measures NUV emission, photomultiplier tubes with high-voltage converters are used as a photon detector. To the contrary, PH4 uses a photodiode as a photon detector because the pass-band of the optical filter is enough wide to detect transient optical emission. Though PH does not equip spatial resolution, it can acquire light curve data with a high time resolution of 50 μs with a 12-bit resolution. Thus, the combinational analysis of PH data and Lightning and Sprite Imager (LSI) data, it is possible to clarify the relationship between TLEs and their parent lightning discharges, the occurrence condition of TLEs, and the energy of the electrons which excite TLE emission.