Task-based teaching has been introduced to many EFL educational settings and has become widely used within those contexts.As a new English teaching approach,it has been evaluated by educators.This essay discusses task...Task-based teaching has been introduced to many EFL educational settings and has become widely used within those contexts.As a new English teaching approach,it has been evaluated by educators.This essay discusses task-based language teaching within the context of EFL students in a middle school in China.A discription of the context,problems of introducing this approach in this context is demonstrated,followed by an overview of this approach and an evaluation including its advantages and disadvantages weighed by scholars,as well as their opinions on"tasks"and"grammar".The end of this essay provides a discussion of solutions for the problems of using this ap proach within this context.展开更多
针对现有基于角色访问控制的缺陷和分布式工作流管理系统的特性,在传统的基于角色的访问控制模型中引入任务集(Tasks)、任务实例集(TaskInstances)和任务上下文(TaskContext)的概念,将传统的user role permission权限赋予结构修改为user...针对现有基于角色访问控制的缺陷和分布式工作流管理系统的特性,在传统的基于角色的访问控制模型中引入任务集(Tasks)、任务实例集(TaskInstances)和任务上下文(TaskContext)的概念,将传统的user role permission权限赋予结构修改为user role task permission权限赋予结构,建立了基于任务和角色的访问控制模型,给出了其形式化定义。该模型解决了传统的基于角色访问控制中的动态适应性差和最小权限约束假象的问题,用于分布式工作流管理系统,提高了安全性、实用性。展开更多
文摘Task-based teaching has been introduced to many EFL educational settings and has become widely used within those contexts.As a new English teaching approach,it has been evaluated by educators.This essay discusses task-based language teaching within the context of EFL students in a middle school in China.A discription of the context,problems of introducing this approach in this context is demonstrated,followed by an overview of this approach and an evaluation including its advantages and disadvantages weighed by scholars,as well as their opinions on"tasks"and"grammar".The end of this essay provides a discussion of solutions for the problems of using this ap proach within this context.
文摘针对现有基于角色访问控制的缺陷和分布式工作流管理系统的特性,在传统的基于角色的访问控制模型中引入任务集(Tasks)、任务实例集(TaskInstances)和任务上下文(TaskContext)的概念,将传统的user role permission权限赋予结构修改为user role task permission权限赋予结构,建立了基于任务和角色的访问控制模型,给出了其形式化定义。该模型解决了传统的基于角色访问控制中的动态适应性差和最小权限约束假象的问题,用于分布式工作流管理系统,提高了安全性、实用性。
