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Factors affecting stock returns have always been the focus of attention in financial markets. In this direction, Fama and French developed a three-factor asset pricing model (FF3F) using market, firm value and size factors. Then, investment and profitability factors were added to FF3F and a five-factor asset pricing model (FF5F) was developed. In the study, it is aimed to examine whether FF3F and FF5F are valid for the Turkish stock market and to reveal the differences between them. In this direction, as a result of the study in which 51 periods between 2008Q2 and 2020Q4 were examined, it was determined that FF3F was more valid than FF5F in the BIST-30 Index. [ABSTRACT FROM AUTHOR]

The main purpose of this study is to investigate the effects of the institutionalization level of the small and medium size enterprises (SMEs) which operate in Istanbul on the accounting information system and to examine the relationship between the level of institutionalization on the accounting information system. The primary data of sample firms has been obtained from SMEs. In the questionnaire prepared within the scope of the research, in addition to the demographic information, 14 statements about the institutionalization levels of the enterprises and 16 statements regarding the use of the accounting information system are included. 769 completed questionnaire which filled by the respondents were investigated in this study. According to results, there is statistically significant relationship between effective use of accounting information system and institutionalization level. Also, it has been concluded that the institutionalization levels of enterprises have a positive effect on the effective use of accounting information system. [ABSTRACT FROM AUTHOR]

Science, technology and rapid transformation in competition are an indispensable part of human development and the wealth of nations shape innovation. For surviving and shining in the business area firms must obtain a sustainable competitive advantage continuously. Innovation brings to firms to have a competitive advantage by creating new product, process, organization and market. Hence, governments support innovation efforts of firms. It is said that government support for innovation must be given to firms within by firm size. In this study, relation between innovation types and firm size were examined in the three periods of 2002-2008 years in Turkey. Despite of the significant and positive relationship between innovation types and firm size innovation is not very different in terms of firm sizes because of weak relationship. Being positive but very weak relationship between innovation expenditure and firms size also supports this finding. Also, innovation efforts of firms didn't increase in terms of periods. [ABSTRACT FROM AUTHOR]