This is the 5446th most frequent Chinese word.
個聯
"個聯" does not appear to be a standard term in Chinese. It could be a typo or specialized usage.
In this sentence, "個聯" is used as "一個聯繫人", signifying an individual contact person.
他是我們公司的一個聯繫人。
He is a contact person for our company.
Here, "個聯" is applied as "一個聯合", denoting a unified or combined entity organizing an event.
這是一個聯合舉辦的活動。
This is a jointly organized event.
In this sentence, "個聯" in "一個聯合研究" indicates collaboration or collective effort in research.