I am currently an undergraduate in mathematics and physics and graduate student in applied mathematics in the US. I am looking for a research position/internship for the summer (somewhere other than my current institution). Is it recommended to cold-call or send emails asking professors or researchers at other institutions around the world for an opportunity to work with them? In what other way can I find a position for this summer? I am specifically looking at institutions in the US, Europe, Japan, Taiwan and China.
Thank you :)