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Kansei engineering research on deodorizing airflesheners
( Mitsuo Nagamachi ) 한국감성과학회 2002 춘계학술대회 Vol.2002 No.-
In Japan, deodorizing airflesheners are very popular to make air flesh by deodorizing odor in rooms, toilet as well as inside a car. There are in different features in deodorizing material of Gel and Liquid, in a shape of bottle from tall to low height, in bottle color and so on. These different features will influence the customer``s feeling to the products of deodorizing airfleshener. This paper deals with the psychological evaluation of the features of deodorizing airfleshener on the SD scale with kansei words. The evaluated data were analyzed by Quantification Theory Type I that leads to the relational rules between the product feature and the kansei words. The beautiful and graceful kansei consists of low height, middle width deformed round shape, but easy operational feature is based on tall shape design. These results are helpful to develop a new product of deodorizing airfleshener.
Kansei Comparison of Form -ratio between Cubic Model and Refrigerator
( Tatsuo Nishino ),( Mitsuo Nagamachi ) 한국감성과학회 2000 춘계학술대회 Vol.2000 No.-
Form-ratio means the ratio of Height/Width/Depth in 3-dimensions. The golden ratio or golden section is included as one of the form-ratio. Kansei Engineering System has some basic design databases. Form-ratio and color are basic design elements and they are very important for designing various products in viewpoint of Kansei Engineering. The subjects evaluate the formratios of 3-dimensional cubes and virtual products (refrigerator)with SD-scale kansei words(feelings and images). The golden ratio was evaluated as not beautiful in refrigerator. We compared with the kansei of cube model and virtual product, and obtained databases of the relationship between the form-ratio and kansei.
지능적 원격조작기술의 일환으로써 효율적 수동모드설정에 관한 연구
이순요,장정삼생,이등굉사,오제상 고려대학교 공학기술연구소 1987 고려대학교 생산기술연구소 생기연논문집 Vol.23 No.1
The present paper deals with obtaining an end point criteria of trajectory planning for the minimum task time and error of manual mode, using the world model aided robotic teleoperator system simulation through a human interface technology, in order to recover effectively the error occurring in the advanced teleoperator tasks. In these experiments, the error occurring in performing the automatic mode is recovered by the manual mode which is combined properly the operation by human with the operation by program. The result shows that the mode 1 of the figure 4 is the efficient end point criteria of trajectory planning to minimize the task time and error of the manual mode.
A study on finite element analysis for simplification of curvature extrusion method
Yu, J. O.,Kim, Y. H.,Takuo, Nagamachi World Scientific Publishing Company 2018 International Journal of Modern Physics B Vol.32 No.19
<P>To eliminate the complexity of curvature extrusion process, a new extrusion method was proposed. In this study, a finite element analysis for curvature extrusion was studied to commercialize this extrusion method that creates curvature in a tilting method. When simulating an extrusion process, it is important to fix the appropriate friction coefficient and fillet value to avoid peel-out problems such that the finite element disappears. Therefore, the actual extrusion results and the simulated results were compared to find conditions that the element would not disappear. There was a good agreement between the simulation and experimental results when the coefficient friction was 0.4 and the fillet was 0.4 mm.</P>
( Shigekazu Ishihara ),( Keiko Ishihara ),( Mitsuo Nagamachi ) 한국감성과학회 2002 춘계학술대회 Vol.2002 No.-
ART (Adaptive Resonance Theory [1]) neural network and its variations perform non-hierarchical clustering by unsupervised learning. We propose a scheme arboART for hierarchical clustering by using several ART1.5-SSS networks. It classifies multidimensional vectors as a cluster tree, and finds features of clusters. The Basic idea of arboART is to use the prototype formed in an ART network as an input to other ART network that has looser distance criteria (Ishihara, et al., [2,3]). By sending prototype vectors made by ART to one after another, many small categories are combined into larger and more generalized categories. We can draw a dendrogram using classification records of sample and categories. We have confirmed its ability using standard test data commonly used in pattern recognition community. The clustering result is better than traditional computing methods, on separation of outliers, smaller error (diameter) of clusters and causes no chaining. This methodology is applied to Kansei evaluation experiment data analysis.
Kazuta Yamashita,Hisanori Ikuma,Takuya Tokashiki,Takashi Maehara,Akihiro Nagamachi,Yoichiro Takata,Toshinori Sakai,Kosaku Higashino,Koichi Sairyo 대한척추외과학회 2017 Asian Spine Journal Vol.11 No.1
Study Design: Prospective study. Purpose: During fluoroscopically guided spinal procedure, the hands of spinal surgeons are placed close to the field of radiation and may be exposed to ionizing radiation. This study directly measured the radiation exposure to the hand of a spinal interventionalist during fluoroscopically guided procedures. Overview of Literature: Fluoroscopically guided spinal procedures have been reported to be a cause for concern due to the radiation exposure to which their operators are exposed. Methods: This prospective study evaluated the radiation exposure of the hand of one spinal interventionalist during 52 consecutive fluoroscopic spinal procedures over a 3-month period. The interventionalist wore three real-time dosimeters secured to the right forearm, under the lead apron over the chest, and outside the lead apron over the chest. Additionally, one radiophotoluminescence glass dosimeter was placed under the lead apron over the left chest and one ring radiophotoluminescence glass dosimeter was worn on the right thumb. The duration of exposure and radiation dose were measured for each procedure. Results: The average radiation exposure dose per procedure was 14.9 μSv, 125.6 μSv, and 200.1 μSv, inside the lead apron over the chest, outside the lead apron over the chest, and on the right forearm, respectively. Over the 3-month period, the protected radiophotoluminescence glass dosimeter over the left chest recorded less than the minimum reportable dose, whereas the radiophotoluminescence glass ring dosimeter recorded 368 mSv for the thumb. Conclusions: Our findings indicated that the cumulative radiation dose measured at the dominant hand may exceed the annual dose limit specified by the International Commission on Radiological Protection. Spinal interventionalists should take special care to limit the duration of fluoroscopy and radiation exposure.
Analysis of Wide-gap Semiconductors with Superconducting XAFS Apparatus
S. Shiki,N. Zen,M. Koike,M. Ukibe,Y. Kitajima,S. Nagamachi,M. Ohkubo,N. Matsubayashi 한국초전도학회 2012 Progress in superconductivity Vol.14 No.2
Fluorescent yield X-ray absorption fine structure (XAFS) spectroscopy is useful for analyzing local structure of specific elements in matrices. We developed an XAFS apparatus with a 100-pixel superconducting tunnel junction (STJ) detector array with a high sensitivity and a high resolution for light-element dopants in wide-gap semiconductors. An STJ detector has a pixel size of 100 μm square, and an asymmetric layer structure of Nb(300 nm)-Al(70 nm)/AlOx/Al(70 nm)-Nb(50 nm). The 100-pixel STJ array has an effective area of 1 mm2. The XAFS apparatus with the STJ array detector was installed in BL-11A of High Energy Accelerator Research Organization, Photon Factory (KEK PF). Fluorescent X-ray spectrum for boron nitride showed that the average energy resolution of the 100-pixels is 12 eV in full width half maximum for the N-K line, and The C-K and N-K lines are separated without peak tail overlap. We analyzed the N dopant atoms implanted into 4H-SiC substrates at a dose of 300 ppm in a 200 nm-thick surface layer. From a comparison between measured X-ray Absorption Near Edge Structure (XANES) spectra and ab initio FEFF calculations, it has been revealed that the N atoms substitute for the C site of the SiC lattice.
Analysis of Wide-gap Semiconductors with Superconducting XAFS Apparatus
Shiki, S.,Zen, N.,Matsubayashi, N.,Koike, M.,Ukibe, M.,Kitajima, Y.,Nagamachi, S.,Ohkubo, M. The Korean Superconductivity Society 2012 Progress in superconductivity Vol.14 No.2
Fluorescent yield X-ray absorption fine structure (XAFS) spectroscopy is useful for analyzing local structure of specific elements in matrices. We developed an XAFS apparatus with a 100-pixel superconducting tunnel junction (STJ) detector array with a high sensitivity and a high resolution for light-element dopants in wide-gap semiconductors. An STJ detector has a pixel size of $100{\mu}m$ square, and an asymmetric layer structure of Nb(300 nm)-Al(70 nm)/AlOx/Al(70 nm)-Nb(50 nm). The 100-pixel STJ array has an effective area of $1mm^2$. The XAFS apparatus with the STJ array detector was installed in BL-11A of High Energy Accelerator Research Organization, Photon Factory (KEK PF). Fluorescent X-ray spectrum for boron nitride showed that the average energy resolution of the 100-pixels is 12 eV in full width half maximum for the N-K line, and The C-K and N-K lines are separated without peak tail overlap. We analyzed the N dopant atoms implanted into 4H-SiC substrates at a dose of 300 ppm in a 200 nm-thick surface layer. From a comparison between measured X-ray Absorption Near Edge Structure (XANES) spectra and ab initio FEFF calculations, it has been revealed that the N atoms substitute for the C site of the SiC lattice.