http://hdl.handle.net/11133/3117 2016-09 2026-04-04T09:37:33Z http://hdl.handle.net/11133/3148 タイトル: 下水マンホールデータビューワの開発 著者: 中村, 栄治; 蟹江, 秀俊 抄録: "This technical report introduces a manhole data viewer for sanitary and storm sewer systems. It consists of an android based application working on a smart phone or tablet and a data base server accessible from the Intemet. The database server contains manhole data of their sizes， locations， and pictures which are needed for the maintenance of sanitary and storm sewer systems. The viewer was test-driven in our college campus where more than 900 manholes are found. The test-drive showed that the viewer lists up automatically the data of manholes in the vicinity of the viewer installed android device whose location is estimated based on GPS signals." 2016-09-22T15:00:00Z http://hdl.handle.net/11133/3144 タイトル: 小型水槽における魚の位置と動きに対応した映像提示システムの構築 著者: 澤野, 弘明; 伊神, 莱里; 中村, 勇介 抄録: We propose a video effect system with a fish position and movement in a small water tank. The purpose of our research is to enhance the appeal of an exhibit content as the fish in the water tank. Our approach is to analyze the position of the fish， and to calculate the movement by a video processing technique. A computer graphics content using the analyzed position and movement is shown in a display attached with the tank. The effectiveness of the proposed system is indicated in the experiment with a questionnaire. 2016-09-22T15:00:00Z http://hdl.handle.net/11133/3145 タイトル: パラメトリックスピーカーにおける生成音の位相シミュレーション 著者: クマール, サハデウ; 古橋, 秀夫 抄録: The phase of sound waves in a strong ultrasonic wave is simulated using the Khokhlov-Zabolotskaya-Kuznetsov equation，which is solved as a transformed beam equation using the Richtmyer method. The simulation is applied to a parametric speaker using amplitude modulation and self-demodulation with a circular configuration. The characteristics of the generated audio waveform are compared with those of plane and spherical ones. The phase of the generated waveform is different from those of plane and spherical waves. However，the generated waveform shows similar characteristics to those of a spherical one within a few degrees of the sound axis. This similarity decreases with increasing distance from the axis，and the phase converges to that of a plane wave. From the viewpoint of the phase，the audio waveform generated by the parametric speaker can be regarded as a narrow wave generated at a virtual point source located at the rear of the speaker. 2016-09-22T15:00:00Z http://hdl.handle.net/11133/3146 タイトル: リチウムイオン電池負極用黒鉛へのシリコンコーティング 著者: 大澤, 善美; 山田, 峻資; 伊藤, 啓; 藤原, 大輔; 恩徳, 拓哉; 糸井, 弘行 抄録: In present study，silicon was coated on the high crystalline graphite particles as core carbon using chemical vapor deposition technique， and effect of the thin film silicon coating on electrochemical properties was examined. Crystalline silicon was deposited on core graphite particles without the formation of SiC that was inert with lithium. Charge capacity (Li de-intercalation) of the pristine carbon was successfully increased up to 650 and 1120 mAh/g by coating with 12.1 and 29.6 mass% silicon， respectively. Capacity was significantly decreased during the charge-discharge cycling for the sample of the graphite coated with 29.6 mass% silicon. Cycle ability was improved by decrease of the thickness of silicon film. 2016-09-22T15:00:00Z