Ahmad Abdollahi, Mehdi Safari Gerayli, Yasser Rezaei Pitenoei, Kamran Mohammad Hasani and Fatemeh Riahi
A long history of literature has considered the role of information risk in determining the cost of equity. The question that has remained unanswered is whether information risk…
Abstract
Purpose
A long history of literature has considered the role of information risk in determining the cost of equity. The question that has remained unanswered is whether information risk plays any systematic role in determining the cost of equity. One of the fundamental decisions that every business needs to make is to assess where to invest its funds and to re-evaluate, at regular intervals, the quality of its existing investments. The cost of capital is the most important yardstick to evaluate such decisions. Greater information is associated with the lower cost of capital via mitigating transaction costs and/or reducing estimation risk and stock returns. This study aims to investigate the impact of information risk on the cost of equity and corporate stock returns.
Design/methodology/approach
The research sample consists of 960 firm-year observations for companies listed on the Tehran Stock Exchange from 2009 to 2018. The research hypotheses were tested using multivariate regression models based on panel data.
Findings
The results reveal that information risk has a significant positive impact on the firm’s cost of equity. However, the impact of information risk on stock returns is not statistically significant.
Originality/value
To the best of the knowledge, the current study is almost the first of its kind in the Iranian literature which investigates the subject matter; therefore, the findings of the study not only extend the extant theoretical literature concerning the information risk in developing countries including the emerging capital market of Iran but also help investors, capital market regulators and accounting standard setters to make timely decisions.
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Mohammadreza Riahi, Fatemeh Karimi and Atefeh Ghaffari
The purpose of this paper is to present three-dimensional (3D) printing of structures with a new method called selective laser baking (SLB) of Poly Dimethyl Siloxane (PDMS).
Abstract
Purpose
The purpose of this paper is to present three-dimensional (3D) printing of structures with a new method called selective laser baking (SLB) of Poly Dimethyl Siloxane (PDMS).
Design/methodology/approach
A 3D model is designed on the computer. PDMS Base is mixed with its hardener and poured into a container. Before it is hardened which normally occures after several hours, a CO2 laser selectively exposes different areas on the surface of the PDMS mixture according to the pattern of a slice of a 3D model designed on the computer. Because of the thermal effect of the CO2 laser, once exposed, PDMS heats up and hardens, producing a cured layer of PDMS which is attached to a base. The base with the cured layer is lowered in the container for a short distance and a layer of new uncured PDMS is spread over the previous layer. The laser exposes new areas again and hardens them. This process is repeated until the whole structure is fabricated.
Findings
The parameters involved in the baking process are investigated and the relation between temperature, mixing portion and laser irradiance on the curing time and layer thickness are investigated.
Originality/value
This fabrication technique is a unique fabrication method that helps to 3D print with two base polymers which their polymerization can be boosted by heat. This 3D printing method has not been presented earlier.
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Fatemeh Yaftiyan, Marziyeh Rassaf, Mohammadjafar Nikimaleki Borchalouei and Hamide Ghahremani
This chapter assists in Iran’s start-ups swift internationalisation from the onset. Indeed, it sheds in-depth qualitative and quantitative insights into analysing the propelling…
Abstract
This chapter assists in Iran’s start-ups swift internationalisation from the onset. Indeed, it sheds in-depth qualitative and quantitative insights into analysing the propelling factors towards entrepreneurial internationalisation. To accomplish this feat, a mixed method of Systematic Literature Review (SLR), Fuzzy-Delphi (FD) and Fuzzy-DEMATEL (Decision Making Trial and Evaluation Laboratory) – ISM (Interpretive Structural Modelling) – MICMAC (Matrix-based Multiplication Applied to a Classification) (FDIM), along with a multi-scenario analysis have innovatively been applied. As a result, entrepreneur characteristics and an accessible qualified workforce, even in foreign countries, are the most prominent drivers. Most probably, the institutional voids, interconnected benchmarking and the advent of new disruptive technologies form the independent factors which can sharply influence the whole system, particularly the entrepreneur characteristics as a dependent one. Moreover, social media, customer orientation and the domestic market cover autonomous drivers, which can moderately be affected or influence the abovementioned factors.
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Yeganeh Charband and Nima Jafari Navimipour
The aim of this paper is to provide a comprehensive and detailed review of the state-of-the-art mechanisms of knowledge sharing in the education field as well as directions for…
Abstract
Purpose
The aim of this paper is to provide a comprehensive and detailed review of the state-of-the-art mechanisms of knowledge sharing in the education field as well as directions for future research.
Design/methodology/approach
In the current study, a systematic literature review until June 2017 is presented, which has been on the education’s mechanisms of knowledge sharing. The authors identified 237 papers, which are reduced to 71 primary studies through the paper selection process.
Findings
By providing the state-of-the-art information, the challenges and issues, this survey will directly support academics, researchers and practicing professionals in their understanding of knowledge sharing developments in education.
Research limitations/implications
There are several limitations in this study. First, this study limited the search for articles to Google scholar and four online databases. There might be other academic journals, which may be able to provide a more comprehensive picture of the articles related to the knowledge sharing in education. Second, non-English publications were excluded from this study. The authors believe research regarding the application of knowledge sharing techniques have also been discussed and published in other languages. In addition, more studies need to be carried out using other methodologies such as interviews.
Originality/value
The paper presents a comprehensive structured literature review of the articles’ mechanisms of knowledge sharing in the education field. The paper’s findings can offer insights into future research needs.