UML (Unified Modeling Language) is a visual modeling language used for specifying, visualizing, constructing,and documenting the artifacts of software systems by various diagrams. It has been widely accepted as a stan...UML (Unified Modeling Language) is a visual modeling language used for specifying, visualizing, constructing,and documenting the artifacts of software systems by various diagrams. It has been widely accepted as a standard modeling language in both academic and industrial areas. UML sequence diagrams are mostly used in specifying system requirements. By representing interactions, which are arranged in time sequence,between the objects in a system,sequence diagrams can construct scenarios indicating the system's functions. A UML statechart diagram is a graph shows the sequences of states that an object or an interaction goes through during its life in response to received stimuli,together with its responses and actions. It's useful in the design stage of system development. This essay discusses the computer-aided transformation from sequence diagrams to statechart diagrams,which can offer strong support for the transfering from requirement analysis to system design in the software development process. With OCL (Object Control Language) semantic constrain,a transform algorithm is provided in the paper. And the differences with the related works are also mentioned.展开更多
国家级高新区间协同创新网络的演化对打造跨区域的高新区协同创新共同体、促进区域协同创新与区域一体化高质量发展具有重要意义。基于2011—2020年国家级高新区内上市企业合作申请专利数据,构建我国东部国家级高新区间协同创新网络,对...国家级高新区间协同创新网络的演化对打造跨区域的高新区协同创新共同体、促进区域协同创新与区域一体化高质量发展具有重要意义。基于2011—2020年国家级高新区内上市企业合作申请专利数据,构建我国东部国家级高新区间协同创新网络,对其结构演化特征开展可视化分析;提出了邻近性、网络依赖性驱动国家级高新区间协同创新网络演化的动力机制假说,并利用时间指数随机图模型(temporal exponential random graph models,TERGM)进行了实证检验。研究发现:东部的国家级高新区间协同创新网络演化呈现多中心与社群化趋势,从以中关村—广州高新区为中心的“双子星”结构,演变为以中关村、上海张江、广州—深圳高新区为多中心的三大社群。在东部的国家级高新区间协同创新网络演化动力机制检验中,邻近性中的地理邻近性具有显著正向影响,而制度邻近性的影响却始终不显著;网络依赖性中的偏好依附性、连通性、传递闭合性均影响显著;协同创新网络演化动力机制具有阶段性转换特征,即由网络形成期的地理邻近性、偏好依附性过渡为网络成长期的连通性与三元闭合性等网络结构层次上的网络依赖性。展开更多
文摘UML (Unified Modeling Language) is a visual modeling language used for specifying, visualizing, constructing,and documenting the artifacts of software systems by various diagrams. It has been widely accepted as a standard modeling language in both academic and industrial areas. UML sequence diagrams are mostly used in specifying system requirements. By representing interactions, which are arranged in time sequence,between the objects in a system,sequence diagrams can construct scenarios indicating the system's functions. A UML statechart diagram is a graph shows the sequences of states that an object or an interaction goes through during its life in response to received stimuli,together with its responses and actions. It's useful in the design stage of system development. This essay discusses the computer-aided transformation from sequence diagrams to statechart diagrams,which can offer strong support for the transfering from requirement analysis to system design in the software development process. With OCL (Object Control Language) semantic constrain,a transform algorithm is provided in the paper. And the differences with the related works are also mentioned.
文摘国家级高新区间协同创新网络的演化对打造跨区域的高新区协同创新共同体、促进区域协同创新与区域一体化高质量发展具有重要意义。基于2011—2020年国家级高新区内上市企业合作申请专利数据,构建我国东部国家级高新区间协同创新网络,对其结构演化特征开展可视化分析;提出了邻近性、网络依赖性驱动国家级高新区间协同创新网络演化的动力机制假说,并利用时间指数随机图模型(temporal exponential random graph models,TERGM)进行了实证检验。研究发现:东部的国家级高新区间协同创新网络演化呈现多中心与社群化趋势,从以中关村—广州高新区为中心的“双子星”结构,演变为以中关村、上海张江、广州—深圳高新区为多中心的三大社群。在东部的国家级高新区间协同创新网络演化动力机制检验中,邻近性中的地理邻近性具有显著正向影响,而制度邻近性的影响却始终不显著;网络依赖性中的偏好依附性、连通性、传递闭合性均影响显著;协同创新网络演化动力机制具有阶段性转换特征,即由网络形成期的地理邻近性、偏好依附性过渡为网络成长期的连通性与三元闭合性等网络结构层次上的网络依赖性。
