result 259 件
| Author | Itoh, Ryota| Nagataki, Hiroyuki| Ooshita, Fukuhito| Kakugawa, Hirotsugu| Masuzawa, Toshimitsu| |
|---|---|
| Published Date | 2007-07-10 |
| Publication Title | 8th International Conference on Information Technology Based Higher Education and Training |
| Content Type | Conference Paper |
| Author | Yoshimoto, Kaori| Noutoshi, Yoshiteru| Hayashi, Ken-ichiro| Shirasu, Ken| Takahashi, Taku| Motose, Hiroyasu| |
|---|---|
| Published Date | 2012-08 |
| Publication Title | Plant Signaling & Behavior |
| Volume | volume7 |
| Issue | issue8 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/AMO/48559 |
|---|---|
| FullText URL | 66_3_203.pdf |
| Author | Ohno, Seiichiro| Harimoto, Takashi| Hirosue, Miyuki| Miyai, Masahiro| Hattori, Kengo| Kuroda, Masahiro| Kanazawa, Susumu| Inamura, Keiji| Kato, Hirokazu| |
| Abstract | Magnetic resonance imaging (MRI) visualization of metallic stent lumens is possible if the stent structure counteracts eddy currents in the lumen induced by the radio frequency magnetic field, B1. To examine the effectiveness of various stent designs in counteracting eddy currents, we anchored eight copper stent models and 2 commercially available nickel-titanium alloy (Nitinol) stents in a gel phantom, perpendicular or parallel to the direction of B1. A mesh stent lumen showed hypointensity irrespective of its alignment relative to B1. A solenoid stent lumen showed hypointensity with the stent axis parallel to B1, but it had the same signal intensity as outside the lumen when perpendicular to B1. A Moebius stent lumen showed no signal reduction, irrespective of alignment relative to B1. Lumens of the commercially available stents showed hypointensity regardless of alignment relative to B1. Computer simulation revealed that the signal intensities of the stents corresponded to magnetic flux densities of B1 in the stents, which are modified by the structure of the stent. While in vivo MRI viewing of a Moebius stent lumen is likely possible regardless of axis alignment, inherent structural weakness may be problematic. As a more practical choice, the solenoid stent is easier to manufacture and generates no hypointensive signal when the axis is parallel to B0. |
| Keywords | MRI visualization of stent lumen solenoid pattern Moebius pattern direction of B1 |
| Amo Type | Original Article |
| Publication Title | Acta Medica Okayama |
| Published Date | 2012-06 |
| Volume | volume66 |
| Issue | issue3 |
| Publisher | Okayama University Medical School |
| Start Page | 203 |
| End Page | 211 |
| ISSN | 0386-300X |
| NCID | AA00508441 |
| Content Type | Journal Article |
| language | English |
| Copyright Holders | CopyrightⒸ 2012 by Okayama University Medical School |
| File Version | publisher |
| Refereed | True |
| PubMed ID | 22729100 |
| Web of Science KeyUT | 000305669700003 |
| Related Url | http://ousar.lib.okayama-u.ac.jp/metadata/48542 |
| Author | Takeuchi, Koichi| Inui, Kentaro| Fujita, Atsushi| Takeuchi, Nao| Abe, Shuya| |
|---|---|
| Published Date | 2005-09-30 |
| Publication Title | 情報処理学会研究報告. 自然言語処理研究会報告 |
| Volume | volume2005 |
| Issue | issue94 |
| Content Type | Technical Report |
| JaLCDOI | 10.18926/46977 |
|---|---|
| FullText URL | mfe_37_2_013_027.pdf |
| Author | Shibuta, Taizo| Konishi, Masami| Imai, Jun| Nishi, Tatsushi| |
| Abstract | Nowadays, various kind of reactor furnaces are widely used for the production in industry. The raw materials charged into the furnace generate reaction heat produced by blowing gas. Generally speaking, the reaction heat generated in the furnace is remarkably high. Therefore the occurrence of an inappropriate temperature distribution in the furnace may make damege or serious accident of the furnace. This is the motivation of furnace control. The author is considering the application of studied results to the furnace control of Blast Furnace in steel industry. To the propose, the approximated and simplified Macro Model of the Blast Furnace is constructed which has the function of representation of qualitative characteristics of the furnace in dynamical sense. The furnace temperature, distribution greatly effects both on the producting and the product quality of the furnace. Needless to say, stable furnace operation is indispensable for the economical prosperity of the industry. In this paper, macro simulation of the furnace is developed to support the analysis and design of the furnace control. Using the simulator, the stability and the control characteristics for inner furnace temperature distribtion are analised quantitatively. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2003-03 |
| Volume | volume37 |
| Issue | issue2 |
| Start Page | 13 |
| End Page | 27 |
| ISSN | 0475-0071 |
| language | English |
| File Version | publisher |
| NAID | 80015999991 |
| Author | Inaba, Tomoya| Noritsugu, Toshiro| |
|---|---|
| Published Date | 2011-06 |
| Publication Title | 日本機械学会論文集 C編 |
| Volume | volume77 |
| Issue | issue778 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/44496 |
|---|---|
| FullText URL | mfe_045_015_026.pdf |
| Author | Kanatani, Kenichi| Rangrajan, Prasanna| Sugaya, Yasuyuki| Niitsuma, Hirotaka| |
| Abstract | We present a new least squares (LS) estimator, called “HyperLS”, specifically designed for parameter estimation in computer vision applications. It minimizes the algebraic distance under a special scale normalization, which is derived by rigorous error analysis in such a way that statistical bias is removed up to second order noise terms. Numerical experiments suggest that our HyperLS is far superior to the standard LS and comparable in accuracy to maximum likelihood (ML), which is known to produce highly accurate results in image applications but may fail to converge if poorly initialized. Our HyperLS is a perfect candidate for ML initialization. In addition, we discuss how image-based inference problems have different characteristics form conventional statistical applications, with a view to serving as a bridge between mathematicians and computer engineers. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2011-01 |
| Volume | volume45 |
| Start Page | 15 |
| End Page | 26 |
| ISSN | 1349-6115 |
| language | English |
| Copyright Holders | Copyright © by the authors |
| File Version | publisher |
| NAID | 120002905952 |
| JaLCDOI | 10.18926/44495 |
|---|---|
| FullText URL | mfe_045_001_014.pdf |
| Author | Akiyoshi, Tatsuro| Imai, Jun| Konishi, Masami| |
| Abstract | This paper presents a method of the controller design for the handling machine by using dsPIC(Digital Signal Processor + Peripheral Interface Controller). Recently, many manufacturing robots are operated in manufacturing facilities, with the aim of labor, cost saving, and improvement of the productivity. Such robots need to have positioning performance of high precision and simultaneously to save cost. In this paper, a digital optimal servo controller is designed, and it is implemented into our barebones controller which involves dsPIC. We have designed and manufactured the controller which is added suitable peripherals to improve the consistency between the mechanical machine operating in continuous time and controller in discrete time. The significance of this research is that digital implementation of the embedded system which has performance-limitation has ensured a comparable result, against the one with PC which has broad utility. When it is used as a controller, it is possible to restrain product prices greatly equivalent PC precision. We demonstrate potential that good control can be achieved even with low cost. Our research has lead to the viability of lower cost and higher performance system for the production process at factories. |
| Publication Title | Memoirs of the Faculty of Engineering, Okayama University |
| Published Date | 2011-01 |
| Volume | volume45 |
| Start Page | 1 |
| End Page | 14 |
| ISSN | 1349-6115 |
| language | English |
| Copyright Holders | Copyright © by the authors |
| File Version | publisher |
| NAID | 120002905951 |
| JaLCDOI | 10.18926/OER/40512 |
|---|---|
| Title Alternative | The Globalization and the Transformation of Auto Parts Suppliers in the Chugoku Region : The Effects of Global Sourcing and the Module Manufacturing System |
| FullText URL | oer_037_3_001_011.pdf |
| Author | Ohno, Takeshi| |
| Abstract | In the age of intense global competition, many Japanese auto makers have overhauled the Keiretsu, the long−term and strong tie between an auto maker and its parts suppliers. In the process, many companies have adapted global sourcing and the module manufacturing system. This paper shows what impacts they have had on auto parts suppliers in the Chugoku region, based on interviews conducted at two auto makers and one auto parts supplier in 2002. There are two types of outsourced parts. One are parts designed by auto makers themselves, and the other are parts designed by part suppliers and approved by the auto makers. The former type of parts are often simple but hard to transport because of their weight or size. The latter type of parts are often high in value and easy to transport. As for global sourcing, auto makers have made more progress in sourcing the latter type. As a result, many high value parts have been manufactured outside the region. The module manufacturing system involves the assembly of a group of parts by the part supplier. These core suppliers, which assemble parts sent from other suppliers, are required to have a higher capacity of technological development than ever before. As a result of this, Tier 1 suppliers, which supply their parts to auto makers directly, are dividing into core suppliers and Tier 2 suppliers, which supply their parts to Tier 1 suppliers. Thus, the module manufacturing system has modified the vertical relation among local parts suppliers. Finally, it is often said that the intense competition in auto industry promotes mergers, but this is not the case in the Chugoku region. Many local suppliers are owned by the founding family, and they often lack the mutual trust which is crucial to mergers. |
| Publication Title | 岡山大学経済学会雑誌 |
| Published Date | 2005-12-10 |
| Volume | volume37 |
| Issue | issue3 |
| Start Page | 1 |
| End Page | 11 |
| ISSN | 0386-3069 |
| Related Url | http://www.e.okayama-u.ac.jp/gakkai/ |
| language | Japanese |
| File Version | publisher |
| NAID | 120002576134 |
| Author | Campabadal, F| Fleta, C| Key, M| Lozano, M| Martinez, C| Pellegrini, G| Rafi, J M| Ullan, M| Johansen, L G| Mohn, B| Oye, O| Solberg, A O| Stugu, B| Ciocio, A| Ely, R| Fadeyev, V| Gilchriese, M| Haber, C| Siegrist, J| Spieler, H| Vu, C| Bell, P J| Charlton, D G| Dowell, J D| Gallop, B J| Homer, R J| Jovanovic, P| Mahout, G| McMahon, T J| Wilson, J A| Barr, A J| Carter, J R| Goodrick, M J| Hill, J C| Lester, C G| Parker, M A| Robinson, D| Anghinolfi, F| Chesi, E| Jarron, P| Kaplon, J| Macpherson, A| Pernegger, H| Pritchard, T| Roe, S| Rudge, A| Weilhammer, P| Bialas, W| Dabrowski, W| Dwuznik, M| Toczek, B| Koperny, S| Bruckman, P| Gadomski, S| Gornicki, E| Malecki, P| Moszczynski, A| Stanecka, E| Szczygiel, R| Turala, M| Wolter, W| Andricek, L| Bethke, S| Hauff, D| Kudlaty, J| Lutz, G| Moser, H -G| Nisius, R| Richter, R| Schieck, J| Colijn, A-P| Cornelissen, T| Gorfine, G W| Hartjes, F G| Hessey, N P| Jong, P de| Kluit, R| Koffeman, E| Muijs, A J. M| Peeters, S J. M| Eijk, B van| Nakano, I| Tanaka, R| Dorholt, O| Danielsen, K M| Huse, T| Sandaker, H| Stapnes, S| Kundu, N| Nickerson, R B| Weidberg, A| Bohm, J| Mikestikova, M| Stastny, J| Broklova, Z| Broz, J| Dolezal, Z| Kodys, P| Kubik, P| Reznicek, P| Vorobel, V| Wilhelm, I| Cermak, P| Chren, D| Horazdovsky, T| Linhart, V| Pospisil, S| Sinor, M| Solar, M| Sopko, B| Stekl, I| Apsimon, R J| Batchelor, L E| Bizzell, J P| Falconer, N G| French, M J| Gibson, M D| Haywood, S J| Matson, R M| McMahon, S J| Morrissey, M| Murray, W J| Phillips, P W| Morrissey, M| Murray, W J| Phillips, P W| Tyndel, M| Villani, E G| Cosgrove, D P| Dorfan, D E| Grillo, A A| Kachiguine, S| Rosenbaum, F| Sadrozinski, H F. -W| Seiden, A| Spencer, E| Wilder, M| Akimoto, T| Hara, K| Tanizaki, K| Bingefors, N| Brenner, R| Ekelof, T| Eklund, L| Bernabeu, J| Civera, J V| Costa, M J| Fuster, J| Garcia, C| Garcia-Navarro, J E| Gonzalez-Sevilla, S| Lacasta, C| Llosa, G| Marti-Garcia, S| Modesto, P| Sanchez, F J| Sospedra, L| Vos, M| |
|---|---|
| Published Date | 2005-11 |
| Publication Title | Nuclear Instruments and Methods in Physics Research Section A: Accelerators |
| Volume | volume552 |
| Issue | issue3 |
| Content Type | Journal Article |
| Author | Ali, Hamed I..| Tomita, Keiichiro| Akaho, Eiichi| Kambara, Hiroto| Miura, Shinji| Hayakawa, Hiroyuki| Ashida, Noriyuki| Kawashima, Yutaka| Yamagishi, Takehiro| Ikeya, Hisao| Yoneda, Fumio| Nagamatsu, Tomohisa| |
|---|---|
| Published Date | 2007-01-01 |
| Publication Title | Bioorganic & Medicinal Chemistry |
| Volume | volume15 |
| Issue | issue1 |
| Content Type | Journal Article |
| Author | Funabiki, Nobuo| Singh, Amit| Mukherjee, Arindam| Sadowska, Malgorzata Marek| |
|---|---|
| Published Date | 2001-9 |
| Publication Title | Digital Systems |
| Content Type | Journal Article |
| Author | Yamamoto, Yoshitake| Yamamoto, Tatsuya| Oberg, P. Ake| Yoshida, Akiharu| |
|---|---|
| Published Date | 1990-2 |
| Publication Title | Instrumentation and Measurement Technology Conference |
| Content Type | Journal Article |
| Author | Michinishi, Hiroyuki| Yokohira, Tokumi| Okamoto, Takuji| Inoue, Tomoo| Fujiwara, Hideo| |
|---|---|
| Published Date | 1996-11 |
| Publication Title | Test Symposium |
| Content Type | Journal Article |
| Author | Funabiki, Nobuo| Nomura, Yohei| Kawashima, Jun| Minamisawa, Yuichiro| Wada, Osami| |
|---|---|
| Published Date | 2006-3 |
| Publication Title | Electromagnetic Compatibility |
| Content Type | Journal Article |
| Author | Funabiki, Nobuo| Nomura, Yohei| Kawashima, Jun| Minamisawa, Yuichiro| Wada, Osami| |
|---|---|
| Published Date | 2006-3 |
| Publication Title | Electromagnetic Compatibility |
| Content Type | Journal Article |
| Author | Wang, Zhi Liang| Wada, Osami| Toyota, Yoshitaka| Koga, Ryuji| |
|---|---|
| Published Date | 2002-5 |
| Publication Title | Electromagnetic Compatibility |
| Content Type | Journal Article |
| Author | Ito, Kazuyuki| Kamegawa, Tetsushi| Matsuno, Fumitoshi| |
|---|---|
| Published Date | 2003-09-14 |
| Publication Title | Robotics and Automation |
| Volume | volume1 |
| Content Type | Journal Article |
| Author | Choengchan, N.| Mantim, T.| Wilairat, P.| Dasgupta, P. K.| Motomizu, Shoji| Nacapricha, D.| |
|---|---|
| Published Date | 2006-10-02 |
| Publication Title | Analytica Chimica Acta |
| Volume | volume579 |
| Issue | issue1 |
| Content Type | Journal Article |
| Author | Baba, Mitsuru| Michiue, Norimasa| Narita, Daisuke| Ohtani, Kozo| |
|---|---|
| Published Date | 2004-5 |
| Publication Title | Instrumentation and Measurement Technology Conference |
| Volume | volume2 |
| Content Type | Journal Article |
