In order to automatically find and conveniently rectify the structural conflicts appearing in a new ontology model version after a series of ontology evolution,we propose an ontology model verification approach,in whi...In order to automatically find and conveniently rectify the structural conflicts appearing in a new ontology model version after a series of ontology evolution,we propose an ontology model verification approach,in which the object constraint language (OCL) and an ontology definition meta-model (ODM) are used to complete the ontology verification.The ODM is composed of the ontology related elements and the definition rule related elements.The OCL is employed to describe the elements in the ontology definition meta-model:OCL extension for the ontology related elements,and OCL extension for the ontological design patterns.All of the above OCL rules will describe the constraint relationships between ontology elements.Associated with an example,the application of the ontology model verification approach based on OCL and ODM is introduced.Consequently,the conflicts happened in the ontology changing and evolution can be easily verified and rectified through this approach.展开更多
Based on Martin Buber＇s theory of ＂Ontology of Between＂, the present paper tries to analyze the unfathomable themes in Wise Blood and argues that the world of Wise Blood （1968） is a highly commercialized society ...Based on Martin Buber＇s theory of ＂Ontology of Between＂, the present paper tries to analyze the unfathomable themes in Wise Blood and argues that the world of Wise Blood （1968） is a highly commercialized society filled with spiritual blindness, moral degeneration, and social corruption. In keeping with O＇Conner＇s artistic creations, the more disgusting the It-world in Wise Blood is represented to the readers, the more palpable her implication becomes that such a world needs the necessary and urgent spiritual redemption.展开更多
A weather station is proposed especially designed for developing countries, and to meet the standards of the international scientific community making research on the earth system. The station would measure in situ se...A weather station is proposed especially designed for developing countries, and to meet the standards of the international scientific community making research on the earth system. The station would measure in situ several ECV （essential climate variables）. These data may enable an agricultural breakthrough in countries lacking meteorological infrastructure, help in climate change monitoring, and facilitate diffusion of wind energy. A pre-feasibility analysis is presented. It appears interesting that the station is supplied by a social enterprise. A research to establish the best shelter design using computational fluid dynamics is also reported. The criterion is the accuracy with which the surface air temperature is reproduced inside the shelter. A design following recommendations by the WMO （World Meteorological Organization）, a smaller design with identical geometry, and two alternative small designs are analyzed. All four designs are simulated in PVC, natural rubber and wood, with and without white paint coating. The smaller shelters perform better. The influence of the material, dimensions and design is smaller than that of the white paint. Shelters made of PVC or rubber, and/or in alternative designs, may be more interesting if other criteria are considered, like whether logistics, manufacturing, etc. are more sustainable, easier and/or cheaper.展开更多
基金Sponsored by the National Basic Research Program of China (the Natural Key Basis Research and Development Plan (Grant No.973:2003CB316905))the National Natural Science Foundation of China(Grant No.60374071)
文摘In order to automatically find and conveniently rectify the structural conflicts appearing in a new ontology model version after a series of ontology evolution,we propose an ontology model verification approach,in which the object constraint language (OCL) and an ontology definition meta-model (ODM) are used to complete the ontology verification.The ODM is composed of the ontology related elements and the definition rule related elements.The OCL is employed to describe the elements in the ontology definition meta-model:OCL extension for the ontology related elements,and OCL extension for the ontological design patterns.All of the above OCL rules will describe the constraint relationships between ontology elements.Associated with an example,the application of the ontology model verification approach based on OCL and ODM is introduced.Consequently,the conflicts happened in the ontology changing and evolution can be easily verified and rectified through this approach.
文摘Based on Martin Buber＇s theory of ＂Ontology of Between＂, the present paper tries to analyze the unfathomable themes in Wise Blood and argues that the world of Wise Blood （1968） is a highly commercialized society filled with spiritual blindness, moral degeneration, and social corruption. In keeping with O＇Conner＇s artistic creations, the more disgusting the It-world in Wise Blood is represented to the readers, the more palpable her implication becomes that such a world needs the necessary and urgent spiritual redemption.
文摘A weather station is proposed especially designed for developing countries, and to meet the standards of the international scientific community making research on the earth system. The station would measure in situ several ECV （essential climate variables）. These data may enable an agricultural breakthrough in countries lacking meteorological infrastructure, help in climate change monitoring, and facilitate diffusion of wind energy. A pre-feasibility analysis is presented. It appears interesting that the station is supplied by a social enterprise. A research to establish the best shelter design using computational fluid dynamics is also reported. The criterion is the accuracy with which the surface air temperature is reproduced inside the shelter. A design following recommendations by the WMO （World Meteorological Organization）, a smaller design with identical geometry, and two alternative small designs are analyzed. All four designs are simulated in PVC, natural rubber and wood, with and without white paint coating. The smaller shelters perform better. The influence of the material, dimensions and design is smaller than that of the white paint. Shelters made of PVC or rubber, and/or in alternative designs, may be more interesting if other criteria are considered, like whether logistics, manufacturing, etc. are more sustainable, easier and/or cheaper.
