This paper first analyzes the reason that agricultural geographic information gives rise to semantic heterogeneity and solution thereof. Although OWL （web ontology language） is the standard of ontology representatio...This paper first analyzes the reason that agricultural geographic information gives rise to semantic heterogeneity and solution thereof. Although OWL （web ontology language） is the standard of ontology representation language in semantic web, it is insufficient in representing spatial characteristics, especially spatial relationship. Consequently it is pointed out to build geo-ontology by virtue of three theories such as mereology, location theory and topology in this paper. This paper introduces mereology, location theory and topology, and then discusses how to adopt these three theories to build geo-ontology. The outcome of experiment shows that solution put forward by this paper is feasible.展开更多
位于大别山南麓长江支流巴河流域的“寨上遗址”,从考古挖掘所获得的石器和陶器来判断,在该遗址上存在大致6000~2800 a B.P.的新石器到西周时代的古人类活动遗迹,随后迅速被第四纪松散沉积物所掩埋.本文从上覆沉积物的厚度、宏观特征、...位于大别山南麓长江支流巴河流域的“寨上遗址”,从考古挖掘所获得的石器和陶器来判断,在该遗址上存在大致6000~2800 a B.P.的新石器到西周时代的古人类活动遗迹,随后迅速被第四纪松散沉积物所掩埋.本文从上覆沉积物的厚度、宏观特征、所处地形地貌以及气候背景多方面综合分析了成因问题.初步认为:寨上遗址古文化层上部覆盖的沉积物应属于河流泛流沉积物,在2800 a B.P.前后异常的气候条件下,区域突发特大暴雨引发了特大泥流洪灾,古人类聚落先民由此遇难或者摧毁居所,这使得他们不得不迁往他地.展开更多
基金supported by the National Basic Research Program of China (2010CB950603)the Science and Technology Research Project of Hubei Provincial Department of Education,China (Q20112905)+1 种基金the Key Science Research Project of Huanggang Normal University,China(2011CA070)the Doctoral Foundation Project of Huanggang Normal University,China (09cd151)
文摘This paper first analyzes the reason that agricultural geographic information gives rise to semantic heterogeneity and solution thereof. Although OWL （web ontology language） is the standard of ontology representation language in semantic web, it is insufficient in representing spatial characteristics, especially spatial relationship. Consequently it is pointed out to build geo-ontology by virtue of three theories such as mereology, location theory and topology in this paper. This paper introduces mereology, location theory and topology, and then discusses how to adopt these three theories to build geo-ontology. The outcome of experiment shows that solution put forward by this paper is feasible.
文摘位于大别山南麓长江支流巴河流域的“寨上遗址”,从考古挖掘所获得的石器和陶器来判断,在该遗址上存在大致6000~2800 a B.P.的新石器到西周时代的古人类活动遗迹,随后迅速被第四纪松散沉积物所掩埋.本文从上覆沉积物的厚度、宏观特征、所处地形地貌以及气候背景多方面综合分析了成因问题.初步认为:寨上遗址古文化层上部覆盖的沉积物应属于河流泛流沉积物,在2800 a B.P.前后异常的气候条件下,区域突发特大暴雨引发了特大泥流洪灾,古人类聚落先民由此遇难或者摧毁居所,这使得他们不得不迁往他地.
