String matching is seen as one of the essential problems in computer science. A variety of computer applications provide the string matching service for their end users. The remarkable boost in the number of data that...String matching is seen as one of the essential problems in computer science. A variety of computer applications provide the string matching service for their end users. The remarkable boost in the number of data that is created and kept by modern computational devices influences researchers to obtain even more powerful methods for coping with this problem. In this research, the Quick Search string matching algorithm are adopted to be implemented under the multi-core environment using OpenMP directive which can be employed to reduce the overall execution time of the program. English text, Proteins and DNA data types are utilized to examine the effect of parallelization and implementation of Quick Search string matching algorithm on multi-core based environment. Experimental outcomes reveal that the overall performance of the mentioned string matching algorithm has been improved, and the improvement in the execution time which has been obtained is considerable enough to recommend the multi-core environment as the suitable platform for parallelizing the Quick Search string matching algorithm.展开更多
在快速群搜索优化算法QGSO(quick group search opti mizer)基本原理的基础上,提出了改进的快速群搜索优化算法——快速被动群搜索优化算法QGSOPC(quick group search opti mizer with passive congregation),并应用于结构优化设计.采用...在快速群搜索优化算法QGSO(quick group search opti mizer)基本原理的基础上,提出了改进的快速群搜索优化算法——快速被动群搜索优化算法QGSOPC(quick group search opti mizer with passive congregation),并应用于结构优化设计.采用QGSOPC优化算法分别对空间结构进行离散变量的截面优化设计,并与QGSO优化算法、群搜索优化算法GSO(group search opti mize)和启发式粒子群优化算法(HPSO)的计算结果进行比较,结果表明改进的快速被动群搜索优化算法QGSOPC与QGSO算法、GSO算法和HPSO算法相比不但具有较好的收敛精度和更快的收敛速度,而且具有很好的稳定性.该算法可有效率地应用于实际结构的优化设计.展开更多
图书馆学是一个十分专业的领域,图书资料的分类与查询工作繁琐而复杂,无论是管理人员还是读者,每天图书整理或借阅工作都极为单调和耗时。将增强现实技术应用于图书馆检索导航,使用二维码对图书的唯一属性进行编码,通过标记识别注册跟...图书馆学是一个十分专业的领域,图书资料的分类与查询工作繁琐而复杂,无论是管理人员还是读者,每天图书整理或借阅工作都极为单调和耗时。将增强现实技术应用于图书馆检索导航,使用二维码对图书的唯一属性进行编码,通过标记识别注册跟踪库与基于RSSI(Received Signal Strength Indication,接收的信号强度指示)的Wi-Fi室内定位技术的结合,使图书所在位置信息通过导航符号叠加于图书馆真实场景并进行图书位置导航。这项技术的研究较好地简化了图书查询和借阅的过程。通过测试结果表明,该方法能帮助用户迅速获取图书在书架上的准确位置,从而达到有效提高读者或图书馆工作人员借阅与管理效率的目的。展开更多
本文以三跨六层平面钢框架的结构总质量和总动应变能最小作为优化目标,结合Pareto最优解理论与拥挤距离机制提出了一种新的适用于钢结构抗震优化设计的多目标算法:多目标快速群搜索算法MQGSO(Multi-objective Quick Group Search Optimi...本文以三跨六层平面钢框架的结构总质量和总动应变能最小作为优化目标,结合Pareto最优解理论与拥挤距离机制提出了一种新的适用于钢结构抗震优化设计的多目标算法:多目标快速群搜索算法MQGSO(Multi-objective Quick Group Search Optimization)。通过振型分解反应谱法进行结构分析,优化的计算结果表明:该算法在处理带约束的平面钢框架的不同抗震性能多目标优化时,具有良好的收敛效果和较快的收敛速度,且Pareto前沿分布均匀宽泛,可为钢框架结构抗震优化设计提供可行的设计方案。展开更多
基于快速群搜索优化算法QGSO(Quick Group Search Optimizer),结合Pareto最优解理论与拥挤距离机制,提出了一种适用于结构优化的简单而实用的多目标算法:多目标快速群搜索优化算法MQGSO(Multi-objective Quick Group Search Optimizatio...基于快速群搜索优化算法QGSO(Quick Group Search Optimizer),结合Pareto最优解理论与拥挤距离机制,提出了一种适用于结构优化的简单而实用的多目标算法:多目标快速群搜索优化算法MQGSO(Multi-objective Quick Group Search Optimization),并将其应用于10杆平面桁架结构的截面优化与25杆空间桁架结构的形状优化.将MQGSO算法与已有的MGSO和IMGSO算法进行了比较,发现其非劣解均优于其他两个算法的非劣解,且具有良好的稳定性与收敛精度,收敛速度也有所提高,说明本文提出的算法用于求解结构多目标优化问题是可行有效的.展开更多
文摘String matching is seen as one of the essential problems in computer science. A variety of computer applications provide the string matching service for their end users. The remarkable boost in the number of data that is created and kept by modern computational devices influences researchers to obtain even more powerful methods for coping with this problem. In this research, the Quick Search string matching algorithm are adopted to be implemented under the multi-core environment using OpenMP directive which can be employed to reduce the overall execution time of the program. English text, Proteins and DNA data types are utilized to examine the effect of parallelization and implementation of Quick Search string matching algorithm on multi-core based environment. Experimental outcomes reveal that the overall performance of the mentioned string matching algorithm has been improved, and the improvement in the execution time which has been obtained is considerable enough to recommend the multi-core environment as the suitable platform for parallelizing the Quick Search string matching algorithm.
文摘在快速群搜索优化算法QGSO(quick group search opti mizer)基本原理的基础上,提出了改进的快速群搜索优化算法——快速被动群搜索优化算法QGSOPC(quick group search opti mizer with passive congregation),并应用于结构优化设计.采用QGSOPC优化算法分别对空间结构进行离散变量的截面优化设计,并与QGSO优化算法、群搜索优化算法GSO(group search opti mize)和启发式粒子群优化算法(HPSO)的计算结果进行比较,结果表明改进的快速被动群搜索优化算法QGSOPC与QGSO算法、GSO算法和HPSO算法相比不但具有较好的收敛精度和更快的收敛速度,而且具有很好的稳定性.该算法可有效率地应用于实际结构的优化设计.
文摘图书馆学是一个十分专业的领域,图书资料的分类与查询工作繁琐而复杂,无论是管理人员还是读者,每天图书整理或借阅工作都极为单调和耗时。将增强现实技术应用于图书馆检索导航,使用二维码对图书的唯一属性进行编码,通过标记识别注册跟踪库与基于RSSI(Received Signal Strength Indication,接收的信号强度指示)的Wi-Fi室内定位技术的结合,使图书所在位置信息通过导航符号叠加于图书馆真实场景并进行图书位置导航。这项技术的研究较好地简化了图书查询和借阅的过程。通过测试结果表明,该方法能帮助用户迅速获取图书在书架上的准确位置,从而达到有效提高读者或图书馆工作人员借阅与管理效率的目的。
文摘本文以三跨六层平面钢框架的结构总质量和总动应变能最小作为优化目标,结合Pareto最优解理论与拥挤距离机制提出了一种新的适用于钢结构抗震优化设计的多目标算法:多目标快速群搜索算法MQGSO(Multi-objective Quick Group Search Optimization)。通过振型分解反应谱法进行结构分析,优化的计算结果表明:该算法在处理带约束的平面钢框架的不同抗震性能多目标优化时,具有良好的收敛效果和较快的收敛速度,且Pareto前沿分布均匀宽泛,可为钢框架结构抗震优化设计提供可行的设计方案。
文摘基于快速群搜索优化算法QGSO(Quick Group Search Optimizer),结合Pareto最优解理论与拥挤距离机制,提出了一种适用于结构优化的简单而实用的多目标算法:多目标快速群搜索优化算法MQGSO(Multi-objective Quick Group Search Optimization),并将其应用于10杆平面桁架结构的截面优化与25杆空间桁架结构的形状优化.将MQGSO算法与已有的MGSO和IMGSO算法进行了比较,发现其非劣解均优于其他两个算法的非劣解,且具有良好的稳定性与收敛精度,收敛速度也有所提高,说明本文提出的算法用于求解结构多目标优化问题是可行有效的.
