The main objective of this research is to optimize the stock portfolio of investment companies operating in the field of petrochemical and refining industries through minimizing risk with respect to the expected return. In this regard, first of all, the compositions of sample firm's portfolios were investigated during 2013 to 2016 and high-weight industries were selected. Then, the risk of retu...

in this paper we examine the effect of the oil volatility, consumer price index (cpi) and industrial production on the stock market return in tehran stock exchange (tse). we used seasonal data in period 1378-1390 and auto regressive distributed method (ardl) for the short-term and long-term relationship between the variables. as results of research indicate, we find that there is positive short...

According to the studies and comments of the experts, addiction is a difficult problem in our society. Nowadays, the most important issue related to addiction in our country is the second return of addicts to narcotic substances after once quitting them. In fact, this is the indication of failure or weak performance of addiction-therapy techniques, emphasizing on its physical aspect. However, a...

issuance value, redemption value and net value of issuance and redemption of investment units is called cash flow to mutual funds. this cash flow to mutual funds is used as an investor sentiment index, when there is significant relationship between cash flow to mutual funds and market return. in this paper, relationship between these two items is to be evaluated. monthly and weekly cash flow to...

Objective: Septic shock is a response to infection and tissue hypoperfusion which does not respond to fluid therapy and eventually leads to organ dysfunction. Aggressive treatment of a broad-spectrum antimicrobial and supportive measures are the cornerstones of successful treatment. In addition to the main treatment, there are adjunctive therapies. Steroids are one of the treat...