For the E-governance workflow system, an improved RBAC model is proposed. The model includes concepts of organization chart and extra permission assignment and presents a formalized description of key elements. 针对电子政务工作流系统的特点,在基本RBAC模型的基础上,引入了组织机构图和额外授权的概念,提出了改进的RBAC模型,并给出模型各要素的形式化描述。
With steel tube arch rib concrete construction of Haikou Extra Large Bridge as an example, detailed description of concrete press-casting of steel tube arch was given. 钢管拱肋的混凝土压注施工是能否体现设计目标&混凝土与钢管良好联合的关键工序。
Should the employer incur any charges or extra cost due to the contractor's failure in packing or marking the crated or packages in accordance with the above description, the Contractor shall be responsible for such charges and extra costs. 若因承包商未能依据上述要求对板条箱或包装进行包装或标记,对业主造成任何费用或额外成本的,承包商应承担上述费用和额外成本。