排序方式： 共有5条查询结果，搜索用时 0 毫秒
1
1.
介绍了安卓平台下Adapter（适配器）组件的机制和一般使用方法,详述了如何通过面向对象的编程方法实现一种可复用的、通用的Adapter类。该Adapter类的实现过程主要运用了泛型、抽象类、公用代码的抽取和封装等多种技术,使用SparseArray类实现了列表视图组件的存储,重构了一个通用的可扩展的ViewHolder类,在Adapter类的getView方法中提供了一个用于数据填充的可配置convert的抽象方法。使用Adapter类明显提高了程序开发效率,增强了系统的可扩展性和可维护性。 相似文献
2.
相比于云计算,雾计算通过将计算、存储和网络服务靠近物联网设备,满足了时延和响应时间要求。为此,提出基于模糊逻辑的实时任务调度（fuzzy logic-based real-time task scheduling,FLTS）算法。先利用模糊逻辑算法合理地给云层和雾层分配任务,当雾层执行任务时,就依据任务对计算、存储和带宽要求以及任务的截止日期、数据尺寸,选择最适宜的虚拟机处理任务。仿真结果表明,相比于同类算法,提出的FLTS算法提升了执行任务的成功率、完成时间以及平均周转时间等性能。 相似文献
3.
通过分析无线网络传输的基本原理及蚁群算法的运算过程,提出了基于TSP蚁群算法的无线通信路由协议优化设计方法。该优化设计将TSP基本蚁群算法的基本原理和通信路由选择相结合,依据蚂蚁信息素含量及距离竞争机制为通信节点选择最优的通信路径。同时,通过在OPNET Modeler通信仿真软件中建立仿真场景及完成优化方法模型构建,对基于TSP蚁群算法的无线通信路由协议进行测试验证,并与其它典型无线路由协议进行对比分析。仿真结果表明,在传输延时方面,提出的优化路由协议较AODV协议、DSR协议分别减少了7.5%和9.8%;在吞吐量方面,提出的优化路由协议较AODV协议、DSR协议分别提高了8.4%和7.8%。 相似文献
4.
In order to research the bond properties between corroded reinforcement bars and concrete, reinforcement bars with different diameters and different types and concrete with different strength levels were treated specially with all soaking and impressed current method, and the bond properties were measured with the pull-out test. The comparative analysis of the bond properties of corroded reinforcement bars was carried out. The results showed that the types of reinforcement bars and concrete had great influence on the bond strength. The corrosion and volume expansion of reinforcement bars made concrete in tensile condition, which tended to produce cracks in parallel reinforced direction. The typical bond failure of plain reinforcement bars was pull-out, while the typical bond failure of ribbed reinforcement bars was split. The bond strength between corroded reinforcement bars and concrete increased with the increase of concrete strength. The bond strength of plain and ribbed reinforcement bars showed a decreasing trend after the first increase with the increase of the extent of corrosion. Through the test, the coefficients of the bond strength of plain and ribbed reinforcement bars were given, respectively. 相似文献
5.
分析一个高校在线考试系统的总体设计方案和主要设计特点。系统设计方案采用B／S结构,主要包括前台考试模块和后台管理模块两大部分,设计内容能够满足一般高校在线考试的需求。论文对系统设计过程中的主要改进点做了比较详细地阐述,从而阐明了改进的主要目的是为了提高在线考试系统的使用效率和方便用户操作两方面。 相似文献
1