Showing 4 results for Preferences
Dr Ghahraman Abdoli, Dr Vahid Majed,
Volume 3, Issue 7 (3-2012)
Abstract
In the past decades, a range of discussions has been formed on coalition theory in economics and international sciences. The focus of this discussion is that in the absence of a superior power, and while some players want to expand their authorities, is it possible to cooperate or not. These theories agree on the principle that if such condition be a sequential game, cooperation will be permanent only if the players are patient enough. In the real world, there are many partnerships between groups that don’t have a same patience, i.e. the discount factor isn’t equal for each of the members. OPEC is an example of those groups which composed of members with different discount factor.
This paper investigates the future of OPEC members and their different discount factors. So, cooperative theory is used to analyze the behavior of OPEC members using panel data techniques. Results show that a fixed effects model is appropriate to explain OPEC member’s behavior. According to the model, the amount of marketed crude oil by members has positive relationship with stocks and sales in the previous period and also there is a negative relationship between the amount of marketed oil and square of proven reserves per capita. The results show that bargaining and negotiation between some members to achieve agreement rapidly and also relents or blackmails guarantees OPEC Survival.
Azam Mohammadzadeh, Mohammad Nabi Shahyaki Tash, Reza Roshan,
Volume 7, Issue 25 (10-2016)
Abstract
One of the capital asset pricing models is CCAPM model that first time were presented by Breeden (1979). In the standard and the basic CCAPM establishes a linear relationship between consumption’s beta and excess return on assets but unfortunately, linear CCAPM made The Equity Premium Puzzle. After presenting puzzles like equity premium puzzle, adjustments were made in the CCAPM. For this purpose in this paper, adjustments have been made in the preferences as explores the implications of a novel class of preferences for the behavior of asset prices. This class of preferences was suggested first time by Marshall (1920), that according to it, people derive utility not only from consumption, but also from the very act of saving.
In this paper, we derive the Euler equations after modeling preferences based on the savings and consumption estimate them with GMM. In order to estimate the models, is examined quarterly data of 1977 to 2010. The models are significant in the other words it can be concluded that consumption and saving are successful in explaining stocks returns. Based on the estimated parameters in the models we can conclude that β is greater than 0.8 and savings is significant in preferences function but don’t have high value. In addition, these results indicate that economic agents are risk averse.
Seyyed Mohammad Hadi Sobhanian, Mohsen Mehrara, ,
Volume 7, Issue 26 (12-2016)
Abstract
One of the main issues and challenges of managing health care system in Iran, is the issue of inequities in access to health services. Theoretical studies and empirical evidences indicate that implementation of the referral system and family physician plan is one of the main strategies to overcome inequity in the health and appropriate using of scarce resources in this area. But for successful execution of the family physician, it is necessary to identify important determinants affecting the decisions of participants in this plan using scientific methods and studying, and health policy makers should design a program pack that matches preferences of the target population to increase the possibility of its successful implementation. This study used Discrete Choice Experiment (DCE) to identify important determinants affecting the decisions of physicians.
Results show that increase in net payments to general practitioners, nearer workplace to residence, allocation of quota to get the degree of expertise, existence of housing facilities and deadheading pay, less covered population and paying to physicians in less period of time may increase the utility and satisfaction of physicians and therefore, possibility of their participation and entry to the plan, as expected.
According to the results, the attribute "place of work" are significantly more important than the other attributes.
. Mohammad Rezvani, Yadollah Bostan, . Milad Etghaei, Dr. Ahmad Fatahi Ardakani,
Volume 11, Issue 42 (12-2020)
Abstract
Investigating consumer behavior and rationalizing it in selecting different goods and services is important because it measures individuals 'preferences over domestic or foreign goods and demonstrates the impact of impulses and policies as a structural failure or a change in individuals' preferences. In other words, the validity of the assumption of rational consumer behavior is examined. The test of revealed preferences is a powerful way of examining changes in family preferences. Therefore, the purpose of the present study is to investigate the stability and structural failure of urban consumer preferences for bread basket in the period 1996-1999 using strong and weak nonparametric test of revealed preferences in Iran. Initially, the weak preferences matrix revealed using average price data and the amount of bread types derived from household expenditure and income plan in urban areas and comparing consumer choices over different time periods. The results of the WARP matrix analysis show that there are no inconsistencies in the bread basket consumers' preferences. Due to the absence of violations in WARP, further changes in preferences using SARP were investigated. The results showed that rational behavior of bread consumers in urban households of Iran is rejected. Also, the results of K-W statistics indicate that there is a structural change in 2014 and indicate that there is no effect of transient shocks and structural failure in urban consumer preferences for bread. Given the years of failure of the utility function and the rationalization of consumer behavior and rational behavior, it is suggested to consider this in estimating the bread demand function of households.
