Tourism is a major foreign exchange earner in Kenya contributing to 10% of the gross domestic product (GDP). Whereas Kenyan government strives to boost its GDP through improved arrivals, lack of effective tourism mark...Tourism is a major foreign exchange earner in Kenya contributing to 10% of the gross domestic product (GDP). Whereas Kenyan government strives to boost its GDP through improved arrivals, lack of effective tourism marketing strategies hinders growth in tourist arrivals in Kenya. To advertise and market the untold wealth of tourist destinations, the government utilizes campaigns through print and electronic media, which are expensive and limited in updating. This study addresses the gap by designing a web Geographic Information System (GIS) portal for marketing and promotion of tourism. To realize this a multimedia GIS database was created using PostgreSQL/PostGIS software to store spatial and multimedia tourism data, while itinerary planning tools were designed using Dijkstra algorithm and Travelling Salesman Problem (TSP) approach. The result was a web GIS portal interface containing tourist information enhanced with text and/or video/audio descriptions. Facebook advertisement was used to popularize the tourism products available in Kenya through visitor engagements as well as directing traffic to the portal fast and inexpensively.展开更多
JPS(Jump Point Search)算法规划的路径往往过于靠近障碍物,影响路径的质量。为此,提出基于路径碰撞危险度的改进JPS算法;通过对传统跳点用危险度评估函数评估,将障碍物同一个拐角中危险度高的跳点结合形成新类型的跳点;对障碍物进行膨...JPS(Jump Point Search)算法规划的路径往往过于靠近障碍物,影响路径的质量。为此,提出基于路径碰撞危险度的改进JPS算法;通过对传统跳点用危险度评估函数评估,将障碍物同一个拐角中危险度高的跳点结合形成新类型的跳点;对障碍物进行膨化处理,使跳点与障碍物保持一定距离,提高算法每次迭代的搜索范围;删除不可直达的后继跳点,降低改进JPS算法的路径长度,改善算法的性能。仿真结果表明改进JPS算法在复杂环境中平均搜索速度提升58.9%,平均路径长度缩短2.7%,平均碰撞危险度降低41.3%。展开更多
文摘Tourism is a major foreign exchange earner in Kenya contributing to 10% of the gross domestic product (GDP). Whereas Kenyan government strives to boost its GDP through improved arrivals, lack of effective tourism marketing strategies hinders growth in tourist arrivals in Kenya. To advertise and market the untold wealth of tourist destinations, the government utilizes campaigns through print and electronic media, which are expensive and limited in updating. This study addresses the gap by designing a web Geographic Information System (GIS) portal for marketing and promotion of tourism. To realize this a multimedia GIS database was created using PostgreSQL/PostGIS software to store spatial and multimedia tourism data, while itinerary planning tools were designed using Dijkstra algorithm and Travelling Salesman Problem (TSP) approach. The result was a web GIS portal interface containing tourist information enhanced with text and/or video/audio descriptions. Facebook advertisement was used to popularize the tourism products available in Kenya through visitor engagements as well as directing traffic to the portal fast and inexpensively.
文摘JPS(Jump Point Search)算法规划的路径往往过于靠近障碍物,影响路径的质量。为此,提出基于路径碰撞危险度的改进JPS算法;通过对传统跳点用危险度评估函数评估,将障碍物同一个拐角中危险度高的跳点结合形成新类型的跳点;对障碍物进行膨化处理,使跳点与障碍物保持一定距离,提高算法每次迭代的搜索范围;删除不可直达的后继跳点,降低改进JPS算法的路径长度,改善算法的性能。仿真结果表明改进JPS算法在复杂环境中平均搜索速度提升58.9%,平均路径长度缩短2.7%,平均碰撞危险度降低41.3%。