文献研究法英文怎么说

Exploratory research, which structures and identifies new problems Constructive research, which develops solutions to a problem Empirical research, which tests the feasibility of a solution using empirical evidenceResearch can also fall into two distinct types: Primary research (collection of data that does not yet exist) Secondary research (summary, collation and/or synthesis of existing research)In social sciences and later in other disciplines, the following two research methods can be applied, depending on the properties of the subject matter and on the objective of the research: Qualitative research (understanding of human behavior and the reasons that govern such behavior) Quantitative research (systematic empirical investigation of quantitative properties and phenomena and their relationships)Research is often conducted using the hourglass model Structure of R[1] The hourglass model starts with a broad spectrum for research, focusing in on the required information through the methodology of the project (like the neck of the hourglass), then expands the research in the form of discussion and