At the beginning, this paper briefly introduces the evolution of information system development approach (ISDA), which can be divided into five categories: life cycle approach (LCA), structured approach (SA),prototypi...At the beginning, this paper briefly introduces the evolution of information system development approach (ISDA), which can be divided into five categories: life cycle approach (LCA), structured approach (SA),prototyping approach (PA), object oriented approach (OOA) and soft system methodology (SSM). After we make a comparative analysis of them,the main factors resulting in failure of information system development (ISD) in China are explained in detail. Consequently, such an assertion that false selection of unsuitable ISDA is the most important reason leading to unsuccessful ISD is reached. In order to avoid it, based on the fuzzy decision making theory, this article demonstrates a method of evaluating alternative ISDAes to select relatively satisfactory one out of them, for which a fuzzy synthetic discrimination model is created. In particular, a typical summarized evaluation index system is established, too. Finally, the application of the above method to a practical information system (IS) is illustrated.展开更多
The Earth and Space Sciences Informatics division of European Geosciences Union(EGU)and the Open Geospatial Consortium jointly organised a special event entitled:‘Implementation of international geospatial standards ...The Earth and Space Sciences Informatics division of European Geosciences Union(EGU)and the Open Geospatial Consortium jointly organised a special event entitled:‘Implementation of international geospatial standards for earth and space sciences event’at the EGU General Assembly meeting held in Vienna,April 2009.The event objectives included:(a)to discuss the integration of information systems from different geosciences disciplines;(b)to promote and discuss the present process to scale from specific and monolithic systems towards independent and modular enabling infrastructuresforming an earth system science(ESS)infrastructure;and(c)to show some of the latest advances in implementing open standards.This manuscript introduces the event motivations and describes the abstract and holistic framework,which can be used to situate the topics and the developments presented by the event speakers.This manuscript introduces important,and relatively new technologies to build a multi-disciplinary geosciences information system:the System of Systems approach and the Model Driven Approach.To achieve that,three important information infrastructure categories are recognised:(a)ESS information infrastructure;(b)geospatial information infrastructure;and(c)distributed information infrastructure.Digital Earth should support the discussed framework to accelerate information transfer from theoretical discussions to applications,in all fields related to global climate change,natural disaster prevention and response,new energy-source development,agricultural and food security,and urban planning and management.展开更多
文摘At the beginning, this paper briefly introduces the evolution of information system development approach (ISDA), which can be divided into five categories: life cycle approach (LCA), structured approach (SA),prototyping approach (PA), object oriented approach (OOA) and soft system methodology (SSM). After we make a comparative analysis of them,the main factors resulting in failure of information system development (ISD) in China are explained in detail. Consequently, such an assertion that false selection of unsuitable ISDA is the most important reason leading to unsuccessful ISD is reached. In order to avoid it, based on the fuzzy decision making theory, this article demonstrates a method of evaluating alternative ISDAes to select relatively satisfactory one out of them, for which a fuzzy synthetic discrimination model is created. In particular, a typical summarized evaluation index system is established, too. Finally, the application of the above method to a practical information system (IS) is illustrated.
文摘The Earth and Space Sciences Informatics division of European Geosciences Union(EGU)and the Open Geospatial Consortium jointly organised a special event entitled:‘Implementation of international geospatial standards for earth and space sciences event’at the EGU General Assembly meeting held in Vienna,April 2009.The event objectives included:(a)to discuss the integration of information systems from different geosciences disciplines;(b)to promote and discuss the present process to scale from specific and monolithic systems towards independent and modular enabling infrastructuresforming an earth system science(ESS)infrastructure;and(c)to show some of the latest advances in implementing open standards.This manuscript introduces the event motivations and describes the abstract and holistic framework,which can be used to situate the topics and the developments presented by the event speakers.This manuscript introduces important,and relatively new technologies to build a multi-disciplinary geosciences information system:the System of Systems approach and the Model Driven Approach.To achieve that,three important information infrastructure categories are recognised:(a)ESS information infrastructure;(b)geospatial information infrastructure;and(c)distributed information infrastructure.Digital Earth should support the discussed framework to accelerate information transfer from theoretical discussions to applications,in all fields related to global climate change,natural disaster prevention and response,new energy-source development,agricultural and food security,and urban planning and management.
