Update : Nov 06, 2018
Dissertation
In a Ph.D. dissertation, a student / researcher has conducted a systematic research which presents and new knowledge, correct, deeps and thorough academic methodology.
Thesis
In a master's thesis a student / researcher has conducted a standard research, which presents additional or new knowledge / results.
Thematic paper
In a thematic paper, a student has conducted an independent study, as designated / assigned. The information comes from the original works of the authors of the of the literature that the student has reviewed. Instead, in a thematic paper, the student summarizes and compiles his / her critical opinions, from the literature review of the selected topic.