In this survey, we perform a survey on different studies associated with critical success factors in project management. The study covers all related studies from 1987 to 2017 based on the articles published on different value added journals. The survey shows that tremendous efforts have been dedicated on important factors, which influence on the success or failure of enterprise resource planning. The other part of the survey is dedicated for the implementation of Six Sigma projects. Our survey shows that successful implementation of Six Sigma could contribute to the success of projects.2017 Growing Science Ltd.

The theory of constraints (TOC) is a management tool, which considers any manageable system as being limited in reaching more of its objectives by some constraints. According to TOC, there is always, at least, one single constraint, and TOC implements a concentrating process to detect the constraint and restructure the remaining of the organization around it. This paper presents an overview of different perspectives of TOC and its implementation in different industries such as project management, quality management, outsourcing, product mix, maketo-buy, accounting, banking and health care, etc. The results indicate that the method has been extensively implemented in different areas of accounting.

During the past few months, there has been a steady downside trend on oil price. From summer, 2015 to winter, 2016, the oil price has declined to the $20 range. Its rate of decline is amazing, having lost $10, one third of its value, in just one month. This paper presents a survey on recently published studies on relationship between oil price and stock market. The study covers several studies on the effects of oil price on China, India, Lebanon, United States and some other G7 stock markets. We also review the effects of oil price volatility on stock market. The results of most studies have indicated some strong relationships between oil price volatility and stock market return.