This is the 7350th most frequent Japanese word.
人的
"Human" or "person-related."
In this sentence, "人的" is used as an adjective to describe "要因" (factors), meaning 'human-related'.
人的要因が事故の原因となった。
Human factors caused the accident.
Here, "人的" is used to modify "資源" (resources), indicating that the resources are people or related to humans.
このプロジェクトには人的資源が不足している。
This project lacks human resources.
In this case, "人的" modifies "交流" (interactions), emphasizing the human aspect of exchanges.