Operational researches, also known as operations research, is a field that utilizes quantitative methods to improve decision-making in organizations. There are a few synonymous terms for operational researches, such as management science, decision science, and applied mathematics. Management science reflects the focus of operations research on problem-solving and decision-making in organizations. Decision science emphasizes the use of quantitative methods for making strategic decisions. Applied mathematics, on the other hand, describes the use of mathematical models to solve practical problems. Regardless of the term used, operational researches involve the analysis of complex systems, the identification of constraints, and the development of models to optimize decisions.