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Book part
Publication date: 5 June 2023

Mehdi Ebrahimi, David S-K. Ting and Rupp Carriveau

Sustainable development calls for a larger share of intermittent renewable energy. To mitigate this intermittency, Compressed Air Energy Storage (CAES) technology was introduced…

Abstract

Sustainable development calls for a larger share of intermittent renewable energy. To mitigate this intermittency, Compressed Air Energy Storage (CAES) technology was introduced. This technology can be made more sustainable by recovering the heat of the compression phase and reusing it during the discharge phase, resulting in an adiabatic CAES without the need for burning of fossil fuels. The key process parameters of CAES are temperature, pressure ratios, and the mass flow rates of air and thermal fluids. The variation in these parameters during the charge and discharge phases significantly influences the performance of CAES plants. In this chapter, the transient thermodynamic behavior of the system under various operating conditions is analyzed and the impact of heat recovery on the discharge phase energy efficiency, power generation, and CO2 emissions is studied. Simulations are carried out over the air pressure range from 2,500 to 7,000 kPa for a 65 MW system over a five-hour discharge duration. It is also assumed that the heat loss in the air storage and the hot thermal fluid tank is insignificant and standby duration does not impact the status of the system. This result shows that the system exergy and the generated power are more sensitive to pressure change at higher pressures. This work also reveals that every 10°C increase on the temperature of the stored air can lead to a 0.83% improvement in the energy efficiency. The result of the transient thermodynamic model is used to estimate the reduction in CO2 emissions in CAES systems. According to the obtained result, a 65 MW ACAES plant can reduce about 17,794 tons of CO2 emission per year compared to a traditional CAES system with the same capacity.

Content available
Book part
Publication date: 5 June 2023

Abstract

Details

Pragmatic Engineering and Lifestyle
Type: Book
ISBN: 978-1-80262-997-2

Article
Publication date: 21 October 2021

Mehdi Sarikhani and Fahime Ebrahimi

The purpose of this study is to investigate the factors affecting the whistleblowing intentions (WBI) by Iranian accountants by integrating the fraud pentagon and the extended…

1706

Abstract

Purpose

The purpose of this study is to investigate the factors affecting the whistleblowing intentions (WBI) by Iranian accountants by integrating the fraud pentagon and the extended theory of planned behavior.

Design/methodology/approach

The population was made up of accountants from all of the 400 companies listed in the Tehran Stock Exchange and the authors used a quantitative survey-based method. Out of a total of 300 questionnaires administered, 171 valid responses were used for analysis. This research used the partial least squares structural equation modeling analysis using SmartPLS 3.3.3 to examine the proposed hypotheses and to analyze the research model.

Findings

The results indicated that the extended theory of planned behavior components (perceived behavioral control, perceived subjective norms (PSN), perceived moral obligation and attitudes toward whistleblowing) have positive effects on accountants’ internal WBI. The results of investigating the moderating effect of perceived moral intensity (PMI) on the relationship between components of the extended theory of planned behavior and WBI show that PMI moderates the effect of PSN on WBI.

Originality/value

This study develops the whistleblowing literature by bringing together the components of the fraud pentagon and the extended theory of planned behavior and providing an integrated model. This model, which incorporates many variables from previous research, seeks to provide a comprehensive model for whistleblowing with the expansion of the Brown et al. (2016) model.

Details

Meditari Accountancy Research, vol. 30 no. 6
Type: Research Article
ISSN: 2049-372X

Keywords

Article
Publication date: 8 August 2023

Fahime Ebrahimi, Mehdi Sarikhani and Amin Rostami

The purpose of this study is to investigate the factors affecting the silence of internal auditors. To this end, the impacts of the perceived climate of silence, professional…

Abstract

Purpose

The purpose of this study is to investigate the factors affecting the silence of internal auditors. To this end, the impacts of the perceived climate of silence, professional commitment, independence commitment, role conflict and role ambiguity on internal auditor silence have been investigated. Furthermore, the effects of role conflict and role ambiguity through independence commitment on internal auditor silence were investigated.

Design/methodology/approach

The statistical population of the study consisted of Iranian internal auditors in 2021. The study used a self-administered survey of 217 internal auditors. In this research, a hierarchical component model in the partial least squares structural equation modeling analysis was used to examine the hypotheses.

Findings

The results of testing the hypotheses indicated that the perceived climate of silence and role ambiguity have positive effects, and professional commitment and independence commitment have negative effects on internal auditor silence. Furthermore, role conflict has an insignificant effect on internal auditor silence. In addition, role conflict and role ambiguity affect the internal auditor silence through the independence commitment.

Originality/value

This study examined the factors affecting the internal auditor silence by combining the construct of the perceived climate of silence that has been previously discussed in the field of management with the professional (professional commitment and independence commitment) and role (role conflict and role ambiguity) factors that are discussed in the internal audit profession. To the best of the author’s knowledge, this is the first study that examines the factors affecting internal auditor silence behavior. The importance of conducting this study is that it investigates a phenomenon among internal auditors that conflicts with the mission and origin of internal audit.

Details

Managerial Auditing Journal, vol. 38 no. 7
Type: Research Article
ISSN: 0268-6902

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Article
Publication date: 10 February 2023

Mohammad Namazi, Fahime Ebrahimi and Mehdi Sarikhani

The purpose of this study is to provide a comprehensive conceptual internal whistleblowing model for accounting students and then test it empirically. To this end, by considering…

Abstract

Purpose

The purpose of this study is to provide a comprehensive conceptual internal whistleblowing model for accounting students and then test it empirically. To this end, by considering the mediating role of professional commitment (PC) and the moderating effect of the perceived moral intensity (PMI), the anticipatory socialization's impact on whistleblowing intentions has been investigated.

Design/methodology/approach

An ex-post quantitative research design has been adopted for this survey study. The statistical population of the study consisted of Iranian undergraduate accounting students close to graduation in 2020. The study utilized a self-administered survey of 211 accounting students from 8 public universities; besides, to examine the proposed hypotheses, it utilized the partial least squares structural equation modeling analysis.

Findings

The results of testing the hypotheses indicate that the constructs of anticipatory socialization (AS), PC and PMI have positive effects on whistleblowing intentions; besides, PC in the relationship between AS and whistleblowing intentions plays a complementary partial mediating role. In addition, PMI moderates the effect of PC on whistleblowing intentions, as well as the mediated effect of AS on whistleblowing intentions via PC.

Social implications

The results of this study indicate the importance of considering trait syntheses of ethics education for undergraduate students, and the need to address and familiarize students with ethical principles, goals and missions of the accounting profession in society.

Originality/value

This study, by providing a moderated mediation conceptual model, examines the important functions that AS, PC and PMI might have created in the whistleblowing process, and also provides some empirical evidence in this area; As a result, it leads to the expansion of theoretical and empirical knowledge in this field.

Details

Journal of Applied Research in Higher Education, vol. 15 no. 5
Type: Research Article
ISSN: 2050-7003

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Article
Publication date: 30 December 2022

Ali Ebrahimi, Mehdi Safari Gerayli and Hasan Valiyan

An important part of the effectiveness of a company is related to the stimuli of the organizational voice, which provides the context for participation and the emergence of moral…

433

Abstract

Purpose

An important part of the effectiveness of a company is related to the stimuli of the organizational voice, which provides the context for participation and the emergence of moral courage in performing organizational tasks. Although individual voice stimulation cannot be easily generalized because of the wide range of criteria affecting it, but in a general category, individual voice stimuli can be separated into internal and external criteria. Therefore, this research first aims to examine internal and external stimuli on individual voice and then examines the effect of individual voice on internal auditors’ moral courage and effectiveness.

Design/methodology/approach

The target population in this study were internal auditors of capital market companies that were examined in the period of 2020. The research tool was a questionnaire and partial least squares analysis was used to fit the model and test the research hypotheses.

Findings

The results of testing the hypotheses show that self-efficacy (hope and resilience) as internal drivers and independence of internal audit performance and perceived supervisor support (external drivers) have a positive effect on moral courage and effectiveness of the internal auditor.

Originality/value

These conclusions suggest that if behavioral incentives are considered, auditors’ level of behavioral audacity in more realistically disclosing the financial performance of their companies can be expected to increase. It should also be noted that the results of this study can increase the level of effectiveness of internal auditors’ functions and their behavioral knowledge in the direction of professional functions.

Details

Journal of Accounting & Organizational Change, vol. 19 no. 5
Type: Research Article
ISSN: 1832-5912

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Article
Publication date: 7 June 2023

Mohammad Mehdi Mohammadi, Mehdi Safari Gerayli, Maryam Shahri, Hasan Valiyan and Farhad Dehdar

The citizen-shareholder approach in the capital market is considered a knowledge-enhancing and emerging concept in financial and accounting offerings. Its reliable background in…

Abstract

Purpose

The citizen-shareholder approach in the capital market is considered a knowledge-enhancing and emerging concept in financial and accounting offerings. Its reliable background in management and human sciences makes it an essential basis for protecting the interests of shareholders and investors. Shareholders are considered a necessary part of the social platforms that are companies and regulatory institutions in the capital market; beyond being obligated to protect their material and intellectual rights, they are responsible for developing norms and facilitating investment values and gaining trust through mutual interactions based on respect for their interests. The purpose of this paper is to perform interactive qualitative analysis of the requirements for protecting the rights of citizens of capital market shareholders.

Design/methodology/approach

The methodology of the research is mixed, so that in the qualitative part, through content screening, the dimensions related to the protection of the citizen rights of the capital market shareholders were identified through a systematic review of 10 research in the period of 2017–2022. Then, the reliability of the specified dimensions was examined through Delphi analysis; in the quantitative part of the research, the criteria identified through the pairwise comparison matrix were first determined by the level of their relationships to determine based on the pattern of systemic representation of drivers and the consequences of requirements to protect the rights of citizens of capital market shareholders.

Findings

The research results in the qualitative part indicated the existence of 12 primary themes; during the two stages of Delphi analysis, three themes were removed, and a total of nine themes entered the quantitative phase. The results in a quantitative part indicate the creation of specialized and active committees of the board of directors as the primary driver and the reliability and timely disclosure of information in the long term as a systemic consequence.

Originality/value

To the best of the authors’ knowledge, this is the first research that presents the new concept of citizen shareholders to strengthen the requirements of protecting the rights of shareholders in the capital market while developing new theoretical literature.

Details

Qualitative Research in Financial Markets, vol. 16 no. 2
Type: Research Article
ISSN: 1755-4179

Keywords

Article
Publication date: 12 September 2018

Mahmoud Mousavi Shiri, Mahdi Salehi, Fatemeh Abbasi and Shayan Farhangdoust

In the process of reporting accounting information, the auditor’s objective is to detect possible misstatements and errors in accounting information. Audit evidence aids auditors…

Abstract

Purpose

In the process of reporting accounting information, the auditor’s objective is to detect possible misstatements and errors in accounting information. Audit evidence aids auditors in providing reasonable assurance about the quality of financial reporting. Studying the quality of family firms’ financial reporting is of higher importance relative to non-family firms due to lower risk of accounting manipulation. Therefore, the purpose of this paper is to examine the relationship between family ownership structure and financial reporting quality from an auditing perspective.

Design/methodology/approach

To analyze the research hypotheses, the authors use a sample data consisted of 221 companies listed on the Tehran Stock Exchange (including 52 family and 169 non-family firms) over a five-year span from 2011 to 2015.

Findings

Using multivariate regression analysis of panel data, our results indicate that audit risk in family firms is lower than their counterparts. Likewise, the findings are indicative of lower audit fees paid by family firms as compared to non-family ones. The authors also find that auditors put more effort in family firms and thus audit effort is more significant for these kinds of firms.

Originality/value

The study focuses on family ownership and financial reporting quality in a developing country like Iran and the results of the study may be beneficial to other developing nations, as Iran stock market possesses some unique features which are not normally prevailing in other equity markets, even in the Middle East.

Details

Journal of Family Business Management, vol. 8 no. 3
Type: Research Article
ISSN: 2043-6238

Keywords

Article
Publication date: 10 January 2023

Mehdi Salimi

In terms of the use of sports places and spaces, per capita is a determining parameter for the status and perspective of the future. Although there are many uses for the per…

Abstract

Purpose

In terms of the use of sports places and spaces, per capita is a determining parameter for the status and perspective of the future. Although there are many uses for the per capita indicator in sports places, there are no consistent scientific and methodological methods for calculating it. Therefore, this study aims to provide an analytical model to determine the per capita index of sports places and spaces.

Design/methodology/approach

One of the matters that can be considered as the basic information required to develop and construct sports facilities is determination of per capita, which can be used as the most vital information to plan and develop this type of urban utilities. In the history of contemporary urbanization, the use of the per capita concept is one of Reinhard Laumeister’s innovations, a founder of modern urban engineering in Germany, hence, the use of per capita was triggered in 1876, almost 133 years ago.

Findings

The underlying information of the research in two spatial and descriptive sections was analyzed in the geographic information systems (GIS) software. After the division and network distribution of the boundary by the Thiessen Networks analytic function in the Arc GIS, per capita of each polygon was separately calculated using the presented formula and the population of the related blocks

Originality/value

Finally, with the qualitative per capita achieved in the previous stage, the study area was classified based on the need for the development of indoor pools to three, privileged, semi-privileged and deprived spectrums.

Details

Journal of Facilities Management , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1472-5967

Keywords

Article
Publication date: 28 February 2023

Mohammad Javad Porkar, Mehdi Khakzand and Nima Mardanlou

The adaptability of multi-functional industrial buildings can be an important factor in their reuse. This utility requires the evaluation of factors that are effective apart from…

Abstract

Purpose

The adaptability of multi-functional industrial buildings can be an important factor in their reuse. This utility requires the evaluation of factors that are effective apart from physical interventions. Therefore, this study used a combined method to investigate the factors affecting the reuse of the case studies of Iran and their adaptation to the theories proposed in the field of industrial heritage. This study aims to achieve effective strategies in adaptive reuse of industrial heritage buildings.

Design/methodology/approach

Hence, six factors in the economic, social, technological, environmental and legal sectors were analyzed based on PESTEL analysis and the interactions of the proposed matrix factors were evaluated. The results from this evaluation were integrated based on conceptual similarities and examined by SWOT technique as the main factors. Finally the criteria obtained from SWOT analysis has been approved by a Delphi survey.

Findings

Consequently, the interaction of the findings to determine the strategy was multiplied in a matrix and the resulting concepts were identified. Finally, 23 strategies were extracted as the factors affecting the reuse of industrial heritage buildings and dealing with future issues. According to the results, the most important strategies are government policies and interventions. Also, the determination of the status of ownership, supervision by the Ministry of Cultural Heritage over the preservation and revitalization of industrial heritage buildings and intervention policies for defining the uses related to an industrial building fall into this category.

Originality/value

The findings of this study indicate that an adaptive view of the above strategies and the indicators of each factor could affect the adaptive reuse of the industrial heritage.

Details

International Journal of Building Pathology and Adaptation, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2398-4708

Keywords

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