1. Research projects that have won Ig Nobel Prizes are real, scientific work.

(have won)

2. Here are some of the most interesting projects that have received the prizes so far.
(have received)

(Question: What is the use of the present perfect in each sentence? Does each present perfect mean 'continuousness' or ' experience'...?)

3 answers

http://grammar.ccc.commnet.edu/grammar/tenses/tense_frames.htm

Click on Present Perfect at the left and read all about the meanings and uses of this tense.

Let us know what you think.
Ig Nobel prizes: http://en.wikipedia.org/wiki/Ig_Nobel_Prize

Rather funny! Intended to be fun!!
It's a play on the word "ignoble" --
http://www.answers.com/ignoble