後勤補給是部隊作戰的命脈，在戰時後勤網路上的補給設施必然是雙方攻擊的主要目標之一，為了分散風險及確保後勤網路的正常運作，在規劃野戰後勤補給網路時，除了主要補給點之外，還會同時選擇數個適當地點當作預備補給點。預備補給點設置的目的是當主補給點遭敵攻擊毀損或有疑慮時，可取代主補給點繼續開設補給設施，迅速恢復後勤作業能力，降低對前線作戰部隊之影響。補給點設置備用供應是提高後勤補給網路可靠性的方法之一，本研究專注於此，結合網路可靠度與設施選址問題，提出非線性數學規劃模型，協助決策者最佳化後勤補給網路的建構。由於數學模型具有NP-hard複雜度，因此採用簡群演算法求解，求解結果與商業軟體CPLEX比較，結果顯示在小規模的題目中，兩者使用的計算時間及計算結果差異性不大；但隨著設施的規模變大及問題的維度增加，CPLEX在計算時間會大幅度增加(超過一小時)，尚未求得最佳解，而SSO依然可以在短時間內獲得效益不錯的近似最佳解。

A number of recent highly publicized cabin incidents in the airline industry has highlighted the need for airline operators to be more proactive in identifying key factors of cabin safety. Based on the literature, safety culture is the leading indicator of safety performance, which in turn can ultimately affect the success of safety management. In this study, a survey was conducted via random sampling among four major Taiwan national airlines to assess cabin crewmembers’ perceptions on safety culture. A valid response rate of 89.29% was obtained, and various statistical analyses were utilized for data analysis. Results indicated that different cabin crew backgrounds resulted in different perceptions on most safety culture factors. Overall, findings suggest Taiwanese airlines need to continue to better understand cabin safety culture, where the areas of management commitment, work environment, accident investigation and safety management system remain with substantial room for improvement.