Side comment: the author is using first person in his paper, which is slightly odd. I know he is the only author, but would it be more suitable to use some other form?
Anyway, it's standard in scientific writing to use "we" instead of "I". https://en.wikipedia.org/wiki/We#The_author.27s_.22we.22
I agree with haddr above. People should not be ashamed of using "I" instead of "we" when it's relevant.
* Write in first person
* Use the active rather than passive voice
* Structure papers in narrative form