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Wavelet and eigen-space feature extraction for classification of metallography images

作者： Praks, Pavel Grzegorzek, Marcin Moravec, Rudolf Válek, Ladislav Izquierdo, Ebroul Dept. of Information and Knowledge Engineering University of Economics Prague Czech Republic Dept. of Applied Mathematics VŠB-Technical University of Ostrava 17. listopadu 15 CZ 708 33 Ostrava Czech Republic Dept. of Applied Mathematics Technical University of Ostrava Czech Republic Multimedia and Vision Research Group Queen Mary University of London United Kingdom Research and Development Mittal Steel Ostrava Plc Ostrava Czech Republic QT-Production Technology Mittal Steel Ostrava Plc Ostrava Czech Republic

ISBN: (纸本)9781586038120

In this contribution a comparison of two approaches for classification of metallography images from the steel plant of Mittal Steel Ostrava plc (Ostrava, Czech Republic) is presented. The aim of the classification is to monitor the process quality in the steel plant. The first classifier represents images by feature vectors extracted using the wavelet transformation, while the feature computation in the second approach is based on the eigen-space analysis. Experiments made for real metallography data indicate feasibility of both methods for automatic image classification in hard industry environment. © 2008 The authors and IOS Press. All rights reserved.

关键词： Iterative methods

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CaCO3 blown aluminium foam and equipment for future low gravity tests

CaCO3 blown aluminium foam and equipment for future low grav...

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5th International Conference on Porous Metals and Metallic Foams, MetFoam 2007

作者： Babcsán, N. Várhegyi, Z.S. Moreno, F. Garcia Horváth, Á. Kornyik, M. Z.Filep, S. Dianiska, B. Vincze, M. Materials Development Group BayLOGI Bay Zoltán Foundation for Applied Research Miskolc-Tapolca 3519 Iglói u. 2 Hungary Budapest University of Technology and Economics Müegyetem rkp. 3-9 1111 Budapest Hungary Hahn-Meitner-Institut Berlin GmbH Glienicker Strae 100 14109 Berlin Germany MTA KFKI Atomic Energy Research Institute Konkoly Thege M. út 29-33 Budapest 1121 Hungary Eötvös Lóránd University Egyetem tér 1-3 1053 Budapest Hungary

ISBN: (纸本)9781932078282

Drainage of the liquid in metal foams causes inhomogeneous foam structure which decreases the quality of the product. The liquid flow is strongly influenced by the gravitational and capillary forces. Elimination of gravity could lead to a better understanding of the capillary forces and design less draining metal foams. We have developed an aluminium foam and an experimental device for imbibition experiment during parabolic flights. In this paper we describe the experimental device and show the results of the ground based tests. A new metal foam with strong drainage was prepared mixing 30 g pure aluminium with 30 g hot compacted (400C, 5 min, 300 MPa) aluminium powder (15 μm particle size) at 700C followed by mixing of CaCO3 blowing agent. The precursor was cooled down in air and sliced to 1g samples. We prepared the metal foam with drained melt on the bottom by simple reheating it to 800C. The foaming and the liquid motion in the foam was monitored on the ground by X-ray radioscopy. The oxidising blowing gas produced stable submillimetre sized bubbles which did not ruptured for several minutes. After the required expansion the foam cooled down and solidified. The ready foam was turned by 180 or 90 and remelted at 700C, at which expansion no longer occurred but the liquid motion could be monitored. The result showed detectable flow intensity during the time interval corresponds to several parabolas.

关键词： Calcium carbonate

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Primates in Peril: The World's 25 most endangered primates 20082010

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Primate Conservation 2009年第1期24卷 1-57页

作者： Mittermeier, Russell A. Wallis, Janette Rylands, Anthony B. Ganzhorn, Jörg U. Oates, John F. Williamson, Elizabeth A. Palacios, Erwin Heymann, Eckhard W. Kierulff, M. Cecília M. Yongcheng, Long Supriatna, Jatna Roos, Christian Walker, Sally Cortés-Ortiz, Liliana Schwitzer, Christoph Bearder, Simon K. Bergl, Richard Bracebridge, Claire E. Brockelman, Warren Y. Butynski, Thomas M. Cornejo, Fanny M. Das, Jayantha Davenport, Tim R. B. De Luca, Daniela W. DeLuycker, Anneke M. Dolch, Rainer Hai, Dong Thanh Dunn, Andrew Peng-Fei, Fan Geissman, Thomas Guillen, Rosamira Long, Ha Thang Honess, Paul E. Islam, Awar Johnson, Steig Jones, Trevor Lamilla, Iader Larney, Eileen Quyet, Le Khac Sanchez, Karmele Llano Yoncheng, Long Louis Jr., Edward E. MacHaga, Sophy J. Martin, Sara K. Mbora, David McGraw, W. Scott Moisson, Pierre Molur, Sanjay Morales-Jiménez, Alba Lucia Morgan, Bethan Mpunga, Noah E. Nadler, Tilo Nekaris, K. Anna I. Nicholas, Aaron Nijman, Vincent Nkembi, Louis Pacheco, Victor Paciulli, Lisa M. Patel, Erik R. Perkin, Andrew Thuc, Phan Duy Quintana, Heidi Rabarivola, Clment J. Rafaliarison, Radoniana R. Raffel, Martina Ralainasolo, Fidimalala Randriatahina, Guy H. Ratsimbazafy, Jonah Ravoarimanana, Iary B. Rudran, Rasanayagam Rumpler, Yves Salim, Agus Savage, Anne Schrudde, Daniela Schwitzer, Nora Shekelle, Myron Singleton, Ian Soto, Luis Stevens, Nancy Sunderland-Groves, Jacqueline Thorn, James S. Urbani, Bernardo Volampeno, Sylviane N. M. Wanasinghe, Ananda Warren, Ymke Weerakoon, Kanchana Werre, J. Lodewijk Wich, Serge A. Winarti, Indah Wright, Patricia C. Andriamaharoa, Hubert Zaramody, Alphonse Carretero-Pinzon, Xyomara Ruiz-Garcia, Manuel Defler, Thomas R. Missouri Botanical Garden Research and Conservation Madagascar Program Antananarivo 101 B.P. 3391 Madagascar Department of Anthropology School of Social Science and Law Oxford Brookes University Oxford 0X3 OBP United Kingdom North Carolina Zoological Park Asheboro NC 27205 4401 Zoo Parkway United States Wildlife Conservation Society Mbeya PO Box 1475 Tanzania Applied Ecology Group Department of Environmental and Geographical Sciences Manchester Metropolitan University Manchester Ml 5GD Chester Street United Kingdom Center for Conservation Biology Institute of Science and Technology for Research and Development Mahidol University Salaya Nakhon Pathom 73170 Phuttthamon-thon 4 Road Thailand Bioko Biodiversity Protection Program Drexel University 10400 Nanyuki PO Box 149 Kenya Museo de Historia Natural Universidad Nacional Mayor de San Marcos Lima 11 Av. Arenales 1256 Peru Museum of Zoology Department of Ecology and Evolutionary Biology University of Michigan Ann Arbor MI 48109-1079 138 Museums Annex 1109 Geddes Avenue United States Wildlife Areas Development and Welfare Trust Guwahati Assam 781 001 M.G. Road India Department of Anthropology Washington University St. Louis MO 63130 United States Prolemur Research Project Association Mitsinjo Andasibe Madagascar Department of Wildlife Management Faculty of Forest Resources and Environmental Management Vietnam Forestry Uiversity Xuan Mai Chuong My Hanoi Viet Nam Wildlife Conservation Society Calabar Cross River State GPO Box 796 Nigeria Kunming Institute of Zoology Chinese Academy of Sciences Kunming Graduate School of the Chinese Academy of Sciences Beijing China Jingdong Nature Reserve Management Bureau Jingdong China Institute of Zoology Ecology and Conservation 20146 Hamburg Martin Luther King Platz 3 Germany Anthropological Institute University Zurich-Irchel CH-8057 Zurich Winterthurerstr. 190 Switzerland Fundacion Proyecto Titi Barranquilla Carrera 56 # 68-85 Colombia Wildlife Research

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A framework for a network-level performance measurement system in SME networks

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International Journal of Networking and Virtual Organisations 2008年第3-4期5卷 415-435页

作者： Varamäki, Elina Kohtamäki, Marko Järvenpää, Marko Vuorinen, Tero Laitinen, Erkki K. Sorama, Kirsti Wingren, Tom Vesalainen, Jukka Helo, Petri Tuominen, Tommi Pihkala, Timo Tenhunen, Jarkko Seinäjoki University of Applied Sciences Koulukatu 41 60100 Seinäjoki Finland University of Vaasa P.O. Box 700 65101 Vaasa Finland University of Jyväskylä PL 35 40014 Jyväskylä Finland Lappeenranta University of Technology Lahti Unit Saimaankatu 11 15140 Lahti Finland Employment and Economic Development Centre for North Karelia P.O. Box 8 FI-80101 Joensuu Finland Seinäjoki University of Applied Sciences Research Group of 'Strategic Entrepreneurship' Department of Management University of Vaasa Department of Accounting University of Jyväskylä Finland Department of Management University of Vaasa Department of Accounting and Business Finance University of Vaasa Finland iMBA Programme Seinäjoki University Applied Sciences Business School Global Company University of Vaasa Department of Management and Organisation Department of Logistics Systems University of Vaasa Finland University of Vaasa Wapice Ltd. Department of Entrepreneurship Lappeenranta University of Technology Employment and Economic Development Centre for North Karelia

The present study aims to present a theoretical framework for a network-level performance measurement system. The suggested framework for the performance measurement system is composed of the factors that enable and cause the productivity and profitability of the network form of organisation. The framework developed in this study can be divided into six subdimensions: (1) network culture, (2) resources and competences, (3) models of action, (4) internal processes, (5) customer perspective and (6) financial indicators of the network. We argue that this framework provides research opportunities to study the performance of the network form of organisation;but even more importantly, it provides a unique framework to analyse and develop network organisations in practice. Copyright © 2008 Inderscience Enterprises Ltd.

关键词： Measurement method Networks Partnerships

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Measurement of shielding effectiveness in the microwave frequency range using a dual focus flat cavity

Measurement of shielding effectiveness in the microwave freq...

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IEEE International Symposium on Electromagnetic Compatibility, EMC 2007

作者： Tosaka, Toshihide Nishikata, Atsuhiro Fukunaga, Kaori Yamanaka, Yukio National Institute of Information and Communications Technology Applied Electromagnetic Research Center EMC Group Tokyo Institute of Technology Center for Research and Development of Educational Technology

ISBN: (纸本)1424413508

We suggested a new measurement method of SE (Shielding Effectiveness) in the microwave frequency range using a DFFC (Dual Focus Flat Cavity). TE waves are transmitted from the transmitting point to the receiving point through the testing material. The shape of the DFFC is oval and the transmitted waves are focused at the receiving point with the same phase. This method has a large dynamic range of about 100 dB. We evaluated this method at a number of frequencies by comparing the calculated value with the measured value using isotropic materials. The differences were less than 3 % at each frequency. The measurement repeatability error was less than 2 %. © 2007 IEEE.

关键词： Magnetic shielding

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Reaction studies in the alumina-magnesia-system with focus on high-temperature castables

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InterCeram: International Ceramic Review 2007年第3期56卷 178-181页

作者： Windecker, B. Cölle, D. Jung, M. Hänsel, S. Research and Development Department Application Technology EKW Group Eisenberg/Palatinate Germany Research and Development Department EKW Group Eisenberg/Palatinate Germany Research and Development Department EKW Group Eisenberg/Palatinate Germany University for Applied Sciences in Koblenz Department of Ceramic Engineering Höhr-Grenzhausen

In order to improve the mechanical and chemical characteristics of refractory castables for steel ladle linings, attention was focussed on the reactions of the well-known alumina-magnesia system. The reaction of alumina with two basically different types of magnesia to yield the magnesium-aluminate spinel was investigated. Solid-state reactions of a mixture of stoichiometric compounds were experimentally observed within the range of 800 °C to 1500 °C. Boron additives could be used for regulation of the reactions. Recent refractory castable concepts with increased corrosion resistance, based on high-purity alumina raw materials, are shown as examples.

关键词： Alumina

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Measurement of Shielding Effectiveness in the Microwave Frequency Range using a Dual Focus Flat Cavity

Measurement of Shielding Effectiveness in the Microwave Freq...

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IEEE International Symposium on Electromagnetic Compatibility (EMC)

作者： Toshihide Tosaka Atsuhiro Nishikata Kaori Fukunaga Yukio Yamanaka Applied Electromagnetic Research Center EMC Group National Institute of Information and Communications Technology Japan Center for Research and Development of Educational Technology Tokyo Institute of Technology Japan

关键词： Microwave measurements Frequency measurement Microwave frequencies Materials testing Electromagnetic measurements Electromagnetic shielding Communications technology Tellurium Shape Electromagnetic scattering

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Functionalized organic semiconductor-based field-effect transistors for phosphonate vapor detection

Functionalized organic semiconductor-based field-effect tran...

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International Symposium Semiconductor Device research (ISDRS)

作者： Jia Huang Joseph Miragliotta Alan Becknell Howard E. Katz Department of Materials Science and Engineeringt Johns Hopkins University Baltimore MD USA Sensor system group Research and technology development center Applied Physics Laboratory Johns Hopkins University Laurel MD USA

In this talk, we report initial studies of p-type oligomer OFETs, with hydroxyl and phenol functionalized semiconductor blends serving as receptor layers, responding to the weakly basic analyte dimethyl methylphosphonate (DMMP) that simulates phosphonate nerve agents. The hydroxyl group is the simplest receptor that could be utilized for enhancing this interaction. At least one blend appears to be single-phase based on x-ray diffraction and electron microscopy.

关键词： FETs Chemical sensors OFETs Sensor arrays Gas detectors Educational institutions Materials science and technology Physics Chemical transducers Chemical elements

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Visualization of boundaries in volumetric data sets using LH histograms

Visualization of boundaries in volumetric data sets using LH...

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作者： Šereda, Petr Bartrolí, Anna Vilanova Serlie, Iwo W.O. Gerritsen, Frans A. Eindhoven University of Technology Department of Biomedical Engineering Image Analysis Group WH 3.2a Postbus 513 5600 MB Eindhoven Netherlands Delft University of Technology Department of Applied Physics Pattern Recognition Group Lorenzweg 1 2628 CJ Delft Netherlands PHILIPS Medical Systems Nederland BV Research and Advanced Development P.O. Box. 10000 5680 DA Best Netherlands Biomedical Engineering Department Eindhoven University of Technology Biomedical Image Analysis Section Biomedical Engineering Department Eindhoven University of Technology Quantitative Imaging Group Department of Imaging Science and Technology Delft University of Technology Biomedical Engineering Department Technische Universiteit Eindhoven Research and Advanced Development Business Group Medical IT Philips Medical Systems Best Netherlands

A crucial step in volume rendering is the design of transfer functions that will highlight those aspects of the volume data that are of interest to the user. For many applications, Boundaries carry most of the relevant information. Reliable detection of Boundaries is often hampered by limitations of the imaging process, such as blurring and noise. We present a method to identify the materials that form the boundaries. These materials are then used in a new domain that facilitates interactive and semiautomatic design of appropriate transfer functions. We also show how the obtained boundary information can be used in region-growing-based segmentation. © 2006 IEEE.

关键词： Volumetric analysis

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Reaction studies in the alumina-magnesia-system with focus on high-temperature castables

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InterCeram: International Ceramic Review 2006年 36-39页

作者： Windecker, B. Cölle, D. Jung, M. Hänsel, S. Research and Development Department EKW Group in Eisenberg/Palatinate Germany Technical University Hamburg-Harburg Department of Material Physics and Technology Germany Research and Development Department for Refractories Foundry and Steel Industries EKW Group Eisenberg/Palatinate Germany University for Applied Sciences in Koblenz Department of Ceramic Engineering in Höhr-Grenzhausen Germany

关键词： Alumina

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