The core elements of a dissertation are

Concept

A dissertation main body normally progresses from defining the research problem and reviewing prior scholarship to explaining the method, presenting findings, interpreting them, and closing the study.

These functions are conventionally organized as introduction, literature review, research methodology, results, discussion, and conclusion.

Application

The sequence Introduction; Literature Review; Research Methodology; Results; Discussion and Conclusion follows that complete progression: it establishes context, locates the study in existing work, explains the procedure, reports the findings, interprets them, and closes the argument.

Contrast

• Introduction; Data Collection; Data Analysis; Conclusions and Recommendations describes an empirical workflow but does not identify the literature-review and methodology chapters separately.

• Executive Summary; Literature Review; Data Gathered; Conclusions; Bibliography mixes preliminary or back matter with the main body and does not separate method, results, and discussion.

• Research Plan; Research Data; Analysis; References is a compressed project outline rather than the conventional sequence of dissertation chapters.

Cross-check

The same six-part main-body structure is stated in university thesis guidance: introduction, literature review, research methodology, results, discussion, and conclusion.

Therefore, the complete core sequence is Introduction; Literature Review; Research Methodology; Results; Discussion and Conclusion.