Reflexion in mathematical models of decision-making

The Proposed Mathematical Models For Decision- Making And Forecasting On Euro- Yen In Foreign Exchange Market

Investigating the Mathematical Models (TOPSIS, SAW) to Prioritize the Investments in the Accepted Pharmaceutical

Considering the importance of decision- making in investment, this study prioritizes the accepted pharmaceutical companies in Tehran stock exchange, during 2013-2017 using the following criteria: the return on investment (ROI), reminded increment (RI), return on sales (ROS) and the earnings per share (EPS). Price per earnings ratio of each share (P/E), return on equity (ROE), return on assets (...

New Realities of the Enterprise Management System Information Support: Economic and Mathematical Models and Cloud Technologies

The paper focuses on the urgency of the implementation of cloud technologies, which are a necessary condition for the development of enterprise management systems, give rise to a complex of insufficiently studied phenomena and processes and determine the need to find new tools in making and implementing reasonable management decisions. In the process of research, the sequence of construction an...

Challenges for the Logic of Social Research: to Grasp Rationality, to Deal with Complexity

The two Herculean tasks – to define rationality, as a basis of social order, and to tackle complexity of social phenomena – require harnessing potent forces and resources of logic. One needs ‘basic logic’, that is, logical calculi to have rules of correct reasonings, then methodological reflexion on the use of mathematical models in social sciences, at last some additions to basic logic. The la...

Ranking Decision Making Units based on their profit in competition to reach a ‎standard level

The full ranking or complete ranking of decision making units is one of the main ‎issues in data envelopment analysis. A full ranking is a ranking that considers all ‎efficient and inefficient units simultaneously and finds a ranking for them. Almost all ‎of the developed ranking methods consider only the efficient units. On the other hand, ‎ranking inefficient units by traditional data envelop...