In 1991 Dr. Ronin joined Luleå University of Technology in Sweden, first as a Guest Researcher, then as a senior Researcher, and in 1999 became an Professor at LTU's Division of Structural Engineering, Cement Chemistry and Technology.
Dr. Ronin joined Luleå University of Technology in Sweden as a Guest Researcher as a senior Researcher. This was in 1991. This was then. This was first. Dr. Ronin in 1999 became an Professor at LTU's Division of Structural Engineering, Cement Chemistry and Technology. This was in 1991.