著者

松本 金矢 鈴木 浩平 小林 朗

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 C編 (ISSN:03875024)

巻号頁・発行日

vol.57, no.536, pp.1107-1112, 1991-04-25 (Released:2008-02-21)

参考文献数

5

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A method for FEM eigenvalue problems of symmetrically laminated composite shells is developed by formulating a 15 d. o. f. flat triangular shell element under the assumption that the transverse normal strain is linear in a symmetrical lamination. A shaking test using CFRP cylindrical shells is conducted, and experimental results obtained through the test are compared with analytical ones by the proposed method. As a consequence of the experiment, vibration characteristics of symmetrically laminated Composite shells are obtained, and the validity of the proposed method for laminated composite shells is proven.

著者

石川 敏之 河野 広隆 長尾 隆史 小林 朗

出版者

公益社団法人 土木学会

雑誌

構造工学論文集 A (ISSN:1881820X)

巻号頁・発行日

vol.61A, pp.808-815, 2015 (Released:2015-05-22)

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In steel members bonded with carbon-fiber reinforced polymer (CFRP) plate, the thermal stresses are introduced in the steel members, the CFRP plates and the adhesive layers when temperature changes because the linear thermal expansion coefficients of steel and CFRP are mismatched. In the previous paper, the authors proposed a technique to reduce thermal stress in steel members strengthened by CFRP plate, which involves bonding aluminum alloy plates with CFRP plates. In this research, the thermal stress introduced in the steel plate with CFRP and aluminum plates was measured over one year. As the result, it was shown the thermal stress in steel plate was neglectable small through the all-season. Additionally, a steel plate bonded carbon fiber strand sheets and aluminium plates side by side was tested. In this method, the thermal stress induced in steel plate was also reduced.

著者

冨田 泰志 小林 朗 鶴貝 満男

出版者

一般社団法人 電気学会

雑誌

電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)

巻号頁・発行日

vol.133, no.8, pp.1607-1615, 2013-08-01 (Released:2013-08-01)

参考文献数

25

被引用文献数

3

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To lower the burden on the global environment, renewable energy resources are increasingly being integrated to power systems, in particular, a great deal of photovoltaics (PVs) in Japan are expected to be installed on the roof-top of residential houses. However, this will make the supply-demand balance control and the voltage control of a power system difficult. A measure to reduce this impact is consuming excess power in local area where PVs are located.We have developed a control algorithm for adjusting the operating pattern of multiple heat pump water heaters as a group to maximize the consumption of excess power of PVs in local area. The problem was formulated as a combinatorial optimization problem, and the tabu search method was applied as a meta-heuristics solution. The result of a case study for group control of six consumers that used the same low-voltage transformer showed an operating pattern that has the following features. First, the consumption of excess PV power was maximized. Second, the consumption of commercial electric power was minimized. We also compared the result by controlling a group of six consumers with the result by controlling of six consumers that had been controlled individually, and showed that the consumption of PV excess power was increased by 46% at the same level of commercial electric power consumption.

著者

小林 朗子

巻号頁・発行日

2012

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筑波大学博士 (学術) 学位論文・平成24年3月23日授与 (甲第6260号)

著者

加藤 昇平 鈴木 祐太 小林 朗子 小島 敏昭 伊藤 英則 本間 昭

出版者

一般社団法人 人工知能学会

雑誌

人工知能学会論文誌 (ISSN:13460714)

巻号頁・発行日

vol.26, no.2, pp.347-352, 2011 (Released:2011-01-06)

参考文献数

15

被引用文献数

3 3

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This paper presents a new trial approach to early detection of cognitive impairment in the elderly with the use of speech sound analysis and multivariate statistical technique. In this paper, we focus on the prosodic features from speech sound. Japanese 115 subjects (32 males and 83 females between ages of 38 and 99) participated in this study. We collected speech sound in a few segments of dialogue of HDS-R examination. The segments corresponds to speech sound that is answering for questions on time orientation and number backward count. Firstly, 130 prosodic features have been extracted from each of the speech sounds. These prosodic features consist of spectral and pitch features (53), formant features (56), intensity features (19), and speech rate and response time (2). Secondly, these features are refined by principal component analysis and/or feature selection. Lastly, we have calculated speech prosody-based cognitive impairment rating (SPCIR) by multiple linear regression analysis. The results indicated that there is moderately significant correlation between HDS-R score and synthesis of several selected prosodic features. Consequently, adjusted coefficient of determination R2=0.50 suggests that prosody-based speech sound analysis has possibility to screen the elderly with cognitive impairment.