Exploring the strategy to improve senior citizens' participations on recreational sports

摘要

This paper presents a Genetic Algorithm (GA) based optimization model for repetitive projects when considering soft logics. There have been several models developed for Times-Cost Trade-Off optimization in repetitive projects and these models were set up to search for optimum output rate that yields the minimum total cost for each project. Previous researches are based on the assumption that work sequence cannot be changed for different work zones. In reality, work sequence between work zones are not fixed (actually, constantly adjusted) throughout the project. Instead, they are constantly changed to shorten the construction time and minimize the total cost. Scheduling with the non-fixed work sequences between work zones is known as the soft logic method. Considering the soft logic in repetitive projects, the proposed GA model aims to assist the project team to find the minimum overall cost subjecting to different output rates and logical sequences. Taiwan has become an aging society. The aged participants can gain physical and mental health and happiness from recreational sports. Therefore, it is important to encourage the senior citizens to engage in recreational sports. The research purpose is to investigate influential factors and relative weights of personal preference and external environment application with a hybrid MCDM (multiple criteria decision making) model combining DEMATEL (decision making trial and evaluation laboratory) with ANP (analytical network process) methods. This study aims to demonstrate how the application of the MCDM model can improve participation and find important factors that can enhance sports and leisure participation. It also chooses the best leisure sports and enhances the experiences of people involved in the coming years. With the determinate results, the dimension of "external environment" is the most important aspect to be improved. In the seven evaluated criteria, "psychology" and "entertainment" are the most important considerations of the recreational sports program to be planned, followed by physical condition. Among the recreational sports types in the dimension of senior citizens' selection, the best is "fitness sports" which will enhance the recreational sports participation, followed by "recreational sports", "competition sports", and "family sports".