著者

清水 彰

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.103, no.1196, pp.620-621, 1987-10-25 (Released:2011-07-13)

著者

坂田 純一 葛西 禎一 進藤 孝一

出版者

一般社団法人 資源・素材学会

雑誌

日本鉱業会誌 (ISSN:03694194)

巻号頁・発行日

vol.103, no.1196, pp.630-634, 1987-10-25 (Released:2011-07-13)

著者

若尾 典子

出版者

名古屋大学

雑誌

名古屋大學法政論集 (ISSN:04395905)

巻号頁・発行日

vol.213, pp.113-143, 2006-09

著者

宇野 民幸

出版者

愛知教育大学

雑誌

教養と教育

巻号頁・発行日

vol.11, pp.23-30, 2011-09

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算数および数学の考え方は、ほとんどすべての大学入学生が、初等・中等教育において意味や計算をとおして多くを学んできているといえる。しかし、その考え方は、学んだ割には日常において活用することはあまりなく、自ら考えたり、また計算したりする必要性もそれほど感じていないであろう。そこで、これまでの数学や算数の考え方を、それぞれが持続していくことの意義を実感してもらえるように望み、実践をしている授業の考察案を紹介したい。

著者

Yoshio Mori Katsuhiko Sumitomo Tamotsu Hisamatsu Tanjuro Goto

出版者

一般社団法人 園芸学会

雑誌

The Horticulture Journal (ISSN:21890102)

巻号頁・発行日

pp.MI-072, (Released:2015-12-16)

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Summer-to-autumn-flowering small-flowered spray-type (SAFS) chrysanthemums (Chrysanthemum morifolium Ramat.) are commercially important in Japan, and there is an occasional increased demand for these flowers. However, under current cultivation methods, the quality of spray formations is compromised in order to maintain a sufficient production rate at times of peak demand. This study investigated the effect of interrupted lighting (IL), the intercalation of a period of long days (by night interruption) into the natural day length (NDL) period of growing, in order to regulate spray formations in SAFS chrysanthemum cultivars ‘Haruka’ and ‘Subaru’, in which lighting can markedly delay flowering. The effects of the NDL period before IL and those of the IL period were investigated. First, we investigated the effect of 2–12 days of NDL followed by 12 days of IL. Plants subjected to 2–6 days of NDL had longer flower clusters and a greater number of flower buds on the upper lateral flower stems and developed a broom-like spray. Next, we investigated the effect of 4–20 days of IL after 4 days of NDL. Plants subjected to 8–20 days of IL had longer flower clusters, more flower buds on the upper lateral flower stems, and broom-like sprays. These changes were more pronounced when the IL periods were prolonged. Our results showed that spray formation in SAFS chrysanthemum cultivars ‘Haruka’ and ‘Subaru’ can be regulated by controlling the timing and period of IL.

著者

足立 泰儀

出版者

日本衛生学会

雑誌

日本衛生学雑誌 (ISSN:00215082)

巻号頁・発行日

vol.48, no.6, pp.1090-1098, 1994-02-15 (Released:2009-02-17)

参考文献数

12

被引用文献数

9 12 14

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It has been reported that the standardized mortality ratios (SMRs) of biliary tract cancer (BTC) (female gallbladder cancer (GBC) in particular) are high in the Niigata plain and low in other parts of Niigata Prefecture. Based on epidemiological studies, the presence of environmental water pollution by agricultural chemicals is likely to be associated with the occurrence of GBC, and one of the most suspected of these is a diphenylether herbicide, chlornitrofen (CNP).The purpose of the present study was to investigate whether or not there was a difference in concentrations of CNP and its reduction product (CNP-amino) in river and faucet water between Niigata and Joetsu Cities, which are located in the Niigata plain and another part of Niigata, respectively. By employing a new method for CNP and CNP-amino extraction, the detection of CNP and CNP-amino was undertaken by using a gaschromatograph with an electroncapture detector.The maximum levels of CNP concentrations were 871 and 554ng/l in river and faucet water, respectively on May 6, 1992 in Niigata City. The concentration of CNP in faucet water was well correlated with that in river water. In Joetsu City, the maximum concentration in river water was 183ng/l on May 6 and had decreased rapidly towards the background level on July 29, 1992. As to the concentrations of CNP in faucet water in Joetsu City, they fluctuated between the levels of 2 and 9ng/l. In the case of CNP-amino concentrations in faucet water, a clear-cut difference was evident between the two cities; 384ng/l in Niigata and under the quantity limit in Joetsu.Examination of CNP and CNP-amino concentrations in faucet water was made in Murakami, Gosen and Kamo Cities, where the SMRs for female GBC were insignificant even in the midst of the Niigata plain. It was demonstrated that concentrations of CNP and CNP-amino were as low as in Joetsu City. The levels of pollution of faucet water with CNP and CNP-amino were well correlated with the SMRs of BTC, especially female GBC.

著者

宇佐美 竜夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.13, no.2, pp.97-112, 1960-07-30 (Released:2010-03-11)

参考文献数

6

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The equation of equilibrium of a homogeneous and isotropic elastic body was solved in the prolate and oblate spheroidal coordinates for the cases of m=0, 1 and 2. The solutions consist of three parts: the first part (Eq. (17)) satisfy Δ=0 and ω=0, the second part (Eq. (18)) Δ=0 and ω≠0 and the third part (Eqs. (80), (82), (83)) Δ≠0 and ω≠0.

著者

佐藤 泰夫 宇佐美 竜夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.17, no.3, pp.167-169, 1964-09-25 (Released:2010-03-11)

参考文献数

1

著者

神田 克久 武村 雅之 宇佐美 龍夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.56, no.1, pp.39-57, 2003-06-02 (Released:2010-03-11)

参考文献数

30

被引用文献数

6

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The method of the inversion analysis to evaluate the distribution of seismic energy radiated from an earthquake fault plane based on seismic intensity distribution data has been developed. The fault plane is divided into small sub-faults. The optimized seismic energy distribution of each sub-fault is calculated using the least square method to minimize the error between evaluated and observed seismic intensities.The energy distribution of a seismic fault is related to seismic intensity using the attenuation formula with equivalent hypocentral distance. The parameters of the attenuation formula are obtained from a regression analysis with measured seismic intensity data of recent moderate earthquakes.The forward analyses using an assumed model are performed to verify the accuracy of the inversion analysis and to evaluate the effect of factors such as the standard deviation of seismic intensity, constraint condition of inversion analysis and configuration of observation stations.Finally, the method is applied to the Showa Tonankai earthquake in 1944 and the Showa Nankai earthquake in 1946 and the result is compared with the tsunami and strong motion waveform inversion results to confirm the efficiency and applicability of the method.

著者

宇佐美 龍夫 小竹 美子 佐藤 泰夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.22, no.4, pp.313-317, 1970-02-28 (Released:2010-03-11)

参考文献数

5

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To make clear the features of the spectrum splitting due to the introduction of a soft solid core, the frequency and spectral amplitude of torsional oscillations are calculated for the modes with colatitudinal order number n from 2 to 9, assuming GUTENBERG-BULLEN A′ earth model. The only deviation from the G-B model is the assumption that the distribution of rigidity is constant in the core. The possibillity of estimating the rigidity of the core by the use of spectrum splitting was discussed.

著者

宇佐美 竜夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.16, no.3, pp.145-148, 1963-09-30 (Released:2010-03-11)

参考文献数

2

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The equation of equilibrium of a homogeneous and isotropic elastic medium is solved for the orthogonal curvilinear coordinates of two dimensions under the condition that Laplace's equation is separable. Coordinates systems satisfying these conditions are Cartesian, cylindrical, elliptic cylindrical and parabolic cylindrical ones.First, solutions of equation of motion is obtained. Then, making frequency in these solutions to zero, the equation of equilibrium is solved.

著者

宇佐美 龍夫 濱松 音蔵 久本 壮一 渡邊 健 中村 亮一 植竹 富一

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.45, no.3, pp.339-351, 1992-12-24 (Released:2010-03-11)

参考文献数

27

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For the study of macroscopic characteristics of earthquake, it is necessary to investigate both historical and modern earthquakes from the same point of view. Historical earthquakes present informations on damages only. Modern earthquakes have various kind of data obtained from instrumental observations. Intensity data is common to both old and modern earthquakes. As the first step to study historical earthquakes, we studied the seismic intensity distribution of recent earthquakes, in the Tohoku district, which occurred in the interval from 1926 to 1990. Results are summarized as follows.(1) The isoseismal contours for many earthquakes off the Pacific coast elongate to north and south, and the seismic intensity decays steeply across the line which is almost parallel to the volcanic front. We call this line “Steeply Decay Line of Seismic Intensity (SDLSI)”. On the contrary, the distribution of seismic intensity for shallow inland earthquakes doesn't show this tendency.(2) We investigated the seismic intensity attenuation in the Tohoku district and obtained the next formula, I=A-BXwhere, I is the seismic intensity, X the hypocentral distance. Coefficients A and B are expressed as follows:for earthquakes of G1, G2 and G3 (see Fig. 2)A=0.198+0.679M, A/B=-1332+299.9M (east side of SDLSI), A=0.944+0.589M, A/B=-1329+279.5M (west side of SDLSI).for earthquakes of G4A=-1.315+0.912M, A/B=-410+134.9M(3) For the earthquakes along the plate boundary, we defined relatively low- and high-frequency earthquakes according to the value of MJ-MI, where MJ is JMA magnitude and MI the one determined by comparing observed intensity attenuation data of each earthquake with a curve calculated from formulas in (2). The epicenteral distribution of low- and high-frequency earthquakes does not show clear characteristics. But, off Fukushima Prefecture region, there seems to be a boundary of the high-and low-frequency earthquake's distribution along the plate boundary of about 40km depth. The high-frequency earthquakes are found in the west side of the boundary.

著者

宇佐美 竜夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.21, no.2, pp.143-146, 1968-08-30 (Released:2010-03-11)

参考文献数

3

著者

宇佐美 龍夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.28, no.2, pp.217-219, 1975-08-10 (Released:2010-03-11)

被引用文献数

1

著者

宇佐美 龍夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.5, no.3, pp.71-76, 1952-09-30 (Released:2010-03-11)

参考文献数

2

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The reflection and refraction of plane SH waves incident upon a high-speed layer with a constant thickness d were studied. Numerical calculations were executed in a case when B1/B2=0.5507, μ2/μ1=3.25, and medium 1 and 3 are equal, and the results are given graphically. According to the results, the so-called total reflection is considered to be taken place when d/L≥5, and no plane SH waves can be propagated parallel to the discontinuous layer.

著者

宇佐美 竜夫 狩野 京一 佐藤 泰夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.15, no.4, pp.261-269, 1962-12-25 (Released:2010-03-11)

参考文献数

1

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It is known that the equation of motion for isotropic and homogeneous elastic medium has 8 solutions having different expressions which satisfy the condition Δ=0. Six of these solutions are found to be expressed by the linear combination of the other two which can be considered as the most basic ones. Some other revisions are made on the former paper (Zisin; vol. 14 (1961), pp. 18-28).

著者

宇佐美 竜夫

出版者

公益社団法人 日本地震学会

雑誌

地震 第2輯 (ISSN:00371114)

巻号頁・発行日

vol.14, no.1, pp.18-28, 1961-03-25 (Released:2010-03-09)

参考文献数

8

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It is clear from the equation of motion of elastic medium expressed in vector form that there are several different solutions (expressions) which satisfy the condition Δ=0 (§3).In this paper, 8 different expressions (at least 4 of which are mutually independent) are obtained (§4). Next, by using one of these solutions, the author got two independent solutions for a problem of motion in an infinite elastic medium when displacements (or stresses) are given on the wall of a cavity in that medium (§5). In such a problem it is proved that we cannot get unique solution as long as we use the so-called Sezawa's solution ((17), (18), (4)) only (§6).

著者

宇佐美 龍夫

出版者

東京大学地震研究所

雑誌

地震研究所研究速報

巻号頁・発行日

vol.12, pp.1-29, 1974-03

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Referring to the damage and intensity distributions and the tsunami-attacked areas and Comparing them with recent earthquakes in the same region, the epicenter location of Japanese historical earthquakes accompanied by damages were re-examined. Existence range of epicenters were also given. Earthquakes from 416 A. D through 1925 are considered. For those after 1926, accurate epicenters are given by the Japan Meteorological Agency and especially since 1960, standard deviation of epicenters are also given by J.M.A. The results are arranged in the form of descriptive tables and figures.

著者

宇佐美 龍夫 浅野 潤三

出版者

東京大学地震研究所

雑誌

東京大学地震研究所彙報 (ISSN:00408972)

巻号頁・発行日

vol.47, no.2, pp.271-394, 1969-07-31

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A bibliography of field studies on major earthquakes in Japan was prepared. This includes papers concerning the field inspection, seismometrical study, study of related phenomena and investigation on damages which were published before the end of 1965. The list consists of the following items: (1)reference number (2)author's name (3)title of the paper (4)name, volume, year and page of Bulletin in which the paper is published or name of publishers (5)name and year of earthquake studied (6)main subject Date, name, latitude, longitude, focal depth, magnitude and reference number of earthquakes are arranged in another table. Papers are classified by the year of earthquake and main subject and arranged in a form of table.

著者

上越教育大学附属図書館

巻号頁・発行日

2015-12-15

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上越教育大学附属図書館学習支援セミナー,上越教育大学附属図書館2階情報交流ゾーン,平成27年12月15日(火)