| 2024 |
Ms. Paola Formica |
Politecnico di Bari, Bari, Italy |
| 2023 |
Mr. Elieser Ernesto Gallego MartÃnez |
Public University of Navarra, Pamplona, Spain |
| 2021 |
Mr. Ningwu Liu |
Anhui University, Hefei, Anhui, China |
| 2012 |
Dr. Pessanha de Castro |
Univ. Noth Fluminense Darcy Ribeiro, Brasil |
| 2010 |
Dr. Mitrayana |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2007 |
Dr. E Santosa |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2006 |
Mrs. T. Pereira |
Univ. Estadual do Norte Fluminense, Brasil |
| 2006 |
Mr. Mitrayana |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2003 |
Mr. J. Chinaud |
Ecole d'Optique, Paris, France |
| 2003 |
Mr. R. Sarmiento |
University of Cebu, Philippines |
| 2003 |
Mr. P. Nugrahedi |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2002 |
Mrs. A. Veres |
University of Szeged, Hongary |
| 2002 |
Mr. P. Nugrahedi |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2002 |
Mr. Setiyoko |
Sanata Dharma Univ. Yogyakarta, Indonesia |
| 2002 |
Mrs. L. Chen |
N. China Electric Power Univ. Baoding, China |
| 2001 |
Dr. Mkayula |
University of Dar es Salaam, Tanzania |
| 2001 |
Mr. R. Fitrihadi |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2001 |
Mr. Mitrayana |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2001 |
Mr. Rohadi |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2001 |
Mr. Rofandi |
Gadjah Mada University, Yogyakarta, Indonesia |
| 2001 |
Mr. S. Li |
University of Dalian, China |
| 2000 |
Dr. A. Olafsson |
University of Reykjavik, Iceland |
| 1999 |
Dr. P.C. Ram |
University of Faizabad, India |
| 1999 |
Dr. S.T. Velazques |
University of Mexico |
| 1998 |
Mrs. S. Cristescu |
University of Bucharest, Romania |
| 1998 |
Dr. Qingxu Yu |
University of Dalian |
| 1998 |
Dr. S.T. Velazques |
University of Mexico |
| 1993 |
Dr. V. Starovoitov |
University of Minsk, Belarus |
| 1993 |
Mr. J. Wasono |
Gadjah Mada University, Yogyakarta, Indonesia |
| 1993 |
Dr. L. Petruzelli |
University of Portenza, Italy |