A Semantic Approach to Integrating XML Schemas Using Domain Ontologies

XML documents might often conform to different schemas even in the same application domain. To support the interoperability among different IT systems, this paper proposes a sophisticated method for integrating XML schemas. The proposed method determines the synonym, hypernym, and holonym relationships among XML elements and attributes by using domain ontologies as well as general dictionaries. Specifically, the proposed method takes the structural information of elements and attributes into account. The conciseness of the schema integrated is also considered. Experimental results with a variety of schemas show that the utilization of a domain ontology and the structural information improved the performance of schema integration

Synthesis of Octahedral-Shaped NiO and Approaches to an Anode Material of Manufactured Solid Oxide Fuel Cells Using the Decalcomania Method

Micrometer-sized and octahedral-shaped NiO particles were synthesized by microwave thermal treatment at 300 watt power for 15 min in a microwave chamber to be used as an anode material in solid oxide fuel cells. SEM image and particle size distribution revealed near-perfect octahedral NiO microparticle with sizes ranging from 4.0~11.0 μm. The anode functional layer (AFL, 60 wt% NiO synthesized: commercial 40 wt% YSZ), electrolyte (commercial Yttria-stabilized zirconia, YSZ), and cathode (commercial La0.8Sr0.2MnO3, LSM) layers were manufactured using the decalcomania method on a porous anode support, sequentially. The sintered electrolyte at 1450°C for 2 h using the decalcomania method was dense and had a thickness of about 10 μm. The cathode was sintered at 1250°C for 2 h, and it was porous. Using humidified hydrogen as a fuel, a coin cell with a 15 μm thick anode functional layer exhibited maximum power densities of 0.28, 0.38, and 0.65 W/cm2 at 700, 750, and 800°C, respectively. Otherwise, when a commercial YSZ anode functional layer was used, the maximum power density was 0.55 W/cm2 at 800°C