出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.78, no.5, pp.389-390, 2012-05-05 (Released:2012-11-05)
参考文献数
3
著者
室谷 裕志
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.80, no.6, pp.519-523, 2014-06-05 (Released:2014-06-05)
参考文献数
9
被引用文献数
2 1
著者
神田 寛行 不二門 尚
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.83, no.11, pp.988-991, 2017-11-05 (Released:2017-11-05)
参考文献数
9
著者
山田 知典 河合 浩志
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.76, no.11, pp.1244-1247, 2010-11-05 (Released:2011-05-05)
参考文献数
5
被引用文献数
1 1
著者
谷藤 克也
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.73, no.4, pp.426-429, 2007 (Released:2010-01-12)
参考文献数
21
被引用文献数
2 1
著者
斉藤 雄之 羽根 一博
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.58, no.2, pp.343-348, 1992-02-05 (Released:2009-10-08)
参考文献数
7
被引用文献数
1 1

This paper describes photothermoelastic effect occurring at the IC lead's soldered joints. Irradiation of chopped LASER light on a lead frame produces flexural vibration caused by the thermoelastic bending. Conditions of soldered joints were modelled into 3 categories, that is “nomalsoldering”, “lifted leg”, “touching”. Flexural resonance was found in “lifted leg”. And the deflection of a lead frame varied according to the mechanical conditions of soldered joints, when irradiation spot position moved along the surface of a lead frame. Precise analysis of amplitude and phase of the vibration gave information on the conditions of soldered joints. In order to explain the experimental results, a calculation model was made. The thermoelastic bending was calculated under the assumption that the temperature difference existed along the thickness of the shell element. Difference between the phenomena occurring from the PT effect and the conventional photoacoustic effect were also observed through the detection of acoustic wave and optical deflection method.
著者
伊東 聖矢 金子 直史 鷲見 和彦
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.86, no.12, pp.1042-1050, 2020-12-05 (Released:2020-12-05)
参考文献数
35

Recent learning-based multi-view stereo (MVS) approaches have shown excellent performance. These approaches typically train a deep neural network to estimate dense depth maps from multiple images. However, most of these approaches require large-scale dense depth maps as the supervisory signals during training. This paper proposes a self-supervised learning framework for MVS, which learns to estimate dense depth maps from multiple images without dense depth supervision. Taking an arbitrary number of images as input, we produce sparse depth maps using structure from motion and use it as self-supervision. We apply reconstruction and smoothness losses to regions where there is no sparse depth. For stable training, we introduce a pseudo-depth loss, which is the difference between depth maps estimated by the network with the current and past parameters. Experimental results on multiple datasets demonstrate the effectiveness of our self-supervised learning framework.
著者
遠藤 維 金井 理 宮田 なつき 河内 まき子 持丸 正明
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.75, no.4, pp.548-553, 2009-04-05 (Released:2011-02-07)
参考文献数
9
被引用文献数
2 3

The purpose of this research is to develop a virtual ergonomic assessment system that evaluates grasp stability and ease of grasping of products such as digital cameras without real subjects and physical mockups by integrating 3D digital hand models with the 3D CAD models of the products. In this paper, we propose “ease of grasping” as a new index for the assessment. This index is calculated from the “EOG-map”, in which example grasp postures of real subjects are plotted as principal component scores in low dimensional space. We also propose an optimization-based correction method for an inappropriate finger posture by using the EOG-map.
著者
閻 紀旺
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.84, no.12, pp.971-974, 2018-12-05 (Released:2018-12-05)
参考文献数
8
著者
森 誠之
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.59, no.4, pp.549-554, 1993-04-05 (Released:2009-07-23)
参考文献数
38

1 0 0 0 OA Kinetic Kite

著者
秋山 幸雄
出版者
公益社団法人 精密工学会
雑誌
精密工学会誌 (ISSN:09120289)
巻号頁・発行日
vol.66, no.9, pp.1362-1365, 2000-09-05 (Released:2009-04-10)
参考文献数
1