Concept, method and application of geospatial data ontology 并列题名：Concept, method and application of geospatial data ontology concept, method and application in management concepts, methods and applications of evaluation results Theory, method and application of grain forcasting Principles and applications of big data technology Principles and applications of hadoop big data technology principles, methods and applications of toxicology Foundation and application of mechanical CAD technology Evaluation method and application of cultivated land quality