Portfolio theory assumes that investors accept risk. This means thatin the equal rate of return on the two assets, the assets were chosenthat have a lower risk level. Modern portfolio theory is accepted byinvestors who believe that they are not cope with the market. Sothey keep many different types of securities in order to access theoptimum efficiency rate that is close to the rate of return o...

This paper considers a multi-period portfolio selection problem imposed by return demand and risk control in a fuzzy investment environment, in which the returns of assets are characterized by fuzzy numbers. A fuzzy lower semi-deviation is originally defined as the risk control of portfolio. A proportion entropy constraint is added as the divergence measure of portfolio. Based on the theories o...

In a decision-making problem, the uncertainty component of refusal and abstain along with sub-parametrization features in information are not catered by intuitionistic fuzzy/Pythagorean fuzzy sets. present communication, we first introduce novel notion picture hypersoft matrix various important binary operations properties. The inclusion matrices allows decision makers to define their preferenc...

Demand for a seasonal product persists for a fixed period of time. Normally the “finite time horizon inventory control problems” are formulated for this type of demands. In reality, it is difficult to predict the end of a season precisely. It is thus represented as an uncertain variable and known as random planning horizon. In this paper, we present a production-inventory model for deterioratin...

Although the classical dividend discount model (DDM) is a wellknown and widely used model in evaluating the intrinsic price of common stock, the practical pattern of dividends, required rate of return or growth rate of dividend do not generally coincide with any of the model’s assumptions. It is just the opportunity to develop a fuzzy logic system that takes these vague parameters into account....

Fuzzy portfolio selection has resulted in many researchers to focus on this field. Based the risk attitudes, study discusses attitudes a decision group for selection. Therefore, we adopt describe experts’ preferences and subjective judgments, then suppose that seeker considers higher return an excess investment based selected guaranteed rate of return; averter shortage securities whose rates ar...

In construction projects, a significant part of work is done by subcontractors (SCs). Therefore, their management main contractors (MCs) becomes an important issue as the density SCs created at sites. recent years, more focus on SC evaluation and selection in bidding process has been agenda whereas subject performance appraisal on-site during project execution phase untended literature. Thus, t...