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Article
Publication date: 5 April 2021

Jeyakumar Suppandipillai, Jayaraman Kandasamy, R. Sivakumar, Mehmet Karaca and Karthik K.

This paper aims to study the influences of hydrogen jet pressure on flow features of a strut-based injector in a scramjet combustor under-reacting cases are numerically…

281

Abstract

Purpose

This paper aims to study the influences of hydrogen jet pressure on flow features of a strut-based injector in a scramjet combustor under-reacting cases are numerically investigated in this study.

Design/methodology/approach

The numerical analysis is carried out using Reynolds Averaged Navier Stokes (RANS) equations with the Shear Stress Transport k-ω turbulence model in contention to comprehend the flow physics during scramjet combustion. The three major parameters such as the shock wave pattern, wall pressures and static temperature across the combustor are validated with the reported experiments. The results comply with the range, indicating the adopted simulation method can be extended for other investigations as well. The supersonic flow characteristics are determined based on the flow properties, combustion efficiency and total pressure loss.

Findings

The results revealed that the augmentation of hydrogen jet pressure via variation in flame features increases the static pressure in the vicinity of the strut and destabilize the normal shock wave position. Indeed, the pressure of the mainstream flow drives the shock wave toward the upstream direction. The study perceived that once the hydrogen jet pressure is reached 4 bar, the incoming flow attains a subsonic state due to the movement of normal shock wave ahead of the strut. It is noticed that the increase in hydrogen jet pressure in the supersonic flow field improves the jet penetration rate in the lateral direction of the flow and also increases the total pressure loss as compared with the baseline injection pressure condition.

Practical implications

The outcome of this research provides the influence of fuel injection pressure variations in the supersonic combustion phenomenon of hypersonic vehicles.

Originality/value

This paper substantiates the effect of increasing hydrogen jet pressure in the reacting supersonic airstream on the performance of a scramjet combustor.

Details

Aircraft Engineering and Aerospace Technology, vol. 93 no. 4
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 17 August 2021

Serhat Inan and Mehmet Karaca

The main purpose of this study was to explore the quality assurance practices in teaching English to young learners (TEYL) settings during the sudden switch to digital education…

655

Abstract

Purpose

The main purpose of this study was to explore the quality assurance practices in teaching English to young learners (TEYL) settings during the sudden switch to digital education. The investigation of the issue was conducted through triple perspectives including institutional, teacher and learner dimensions.

Design/methodology/approach

A partially mixed sequential dominant status design (P4) method was adopted in this study. The qualitative and quantitative data collection techniques were incorporated, and the data were triangulated to ensure validity. Additionally, trustworthiness, credibility and transferability procedures were strictly followed for the qualitative data.

Findings

The findings of this study revealed that the investigated institution in this study reacted this process swiftly and made the benefit of young and technology literate teachers while experiencing certain difficulties. On the other hand, teachers were confused in this process, and they showed signs that they were affectively influenced. The most prominent difficulty experienced by the teachers was the integration of four language skills to their teaching and assessment. A small number of the learners in this study revealed that they had negative attitudes toward online education, which was thought to be stemming from the lack of technological equipment and a suitable learning environment.

Originality/value

To the best of the authors’ knowledge, the present study is one of the first studies to explore quality assurance in TEYL in relation to distance education practices. As a three-dimensional study, the current study explores the issue from triple perspective as institutional, teacher and leaner perspectives.

Details

Quality Assurance in Education, vol. 29 no. 4
Type: Research Article
ISSN: 0968-4883

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Article
Publication date: 14 March 2022

Mehmet Bağış, Liridon Kryeziu, Mehmet Nurullah Kurutkan, Besnik A. Krasniqi, Joanna Hernik, Ensar Selman Karagüzel, Volkan Karaca and Çağdaş Ateş

This paper aims to determine the antecedents that affect higher education students' entrepreneurial intention and awareness in two developing economies (Turkey and Poland) and one…

805

Abstract

Purpose

This paper aims to determine the antecedents that affect higher education students' entrepreneurial intention and awareness in two developing economies (Turkey and Poland) and one transition economy (Kosovo).

Design/methodology/approach

This study uses a quantitative research approach based on a sample of 342 questionnaires. Using SPSS 23, AMOS and Process Hayes, this study tests research hypotheses using explanatory and confirmatory factor analysis, correlation analysis, regression analysis and mediation analysis.

Findings

The findings show that personal attitudes (PA), perceived behavioural control (PBC) and need for achievement (NFA) variables affect students' entrepreneurial intentions and alertness (EIA) in Turkey, Poland, and Kosovo. PA and PBC mediate the impact of NFA on EIA. In addition, analyses show that the country variable does not have a moderator effect on EIA, PA, NFA and PBC variables. The findings reveal that students' perceptions of EIA differ by country.

Research limitations/implications

The sample comes from a university in three countries; therefore, these results cannot be generalised to the entire population. In addition, the study was carried out with a cross-sectional study urging the need for a longitudinal analysis of the data, which may provide better results.

Practical implications

Results can benefit policymakers and higher education administrators for resource planning, organising educational curricula and strategic policy plans for building the entrepreneurial ecosystem.

Originality/value

The originality of this article is that it presents a model to reveal the effect of PA, PBC and NFA variables on EIA in three different countries.

Details

Journal of Enterprising Communities: People and Places in the Global Economy, vol. 17 no. 4
Type: Research Article
ISSN: 1750-6204

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Article
Publication date: 1 May 2024

Volkan Karaca and Mehmet Bağış

This study aims to investigate the relationships between managers’ cognitive styles, dynamic managerial capabilities and firms’ perceived international performance. The study is…

216

Abstract

Purpose

This study aims to investigate the relationships between managers’ cognitive styles, dynamic managerial capabilities and firms’ perceived international performance. The study is based on cognitive-experiential self-theory, dynamic managerial capabilities and international entrepreneurship.

Design/methodology/approach

Data were collected from 283 managers of small medium enterprises (SMEs) in Türkiye, an emerging economy. The research was conducted using quantitative methods, and Smart partial least squares (PLS) 4 software was used for data analysis. The data were examined through structural equation modelling and mediation analyses.

Findings

Findings indicate that rational cognitive styles positively influence managerial human capital, managerial social capital, managerial cognition and perceived international performance. However, the effect of intuitive cognitive styles was confirmed only on managerial cognition. Additionally, it was found that managerial cognition positively affects perceived international performance, whereas managerial social capital has a negative impact. However, the effects of managerial human capital could not be confirmed. Moreover, a full mediation relationship of managerial cognition between intuitive cognitive styles and perceived international performance was identified.

Originality/value

This research carves out a unique niche by synergizing cognitive-experiential self-theory with dynamic managerial capabilities to investigate their conjoined effect on firms’ international performance, an area previously underexplored. Unveiling insights from burgeoning economies like Türkiye enriches the existing body of knowledge, offering substantial contributions to the field of international business.

Details

Management Research Review, vol. 47 no. 9
Type: Research Article
ISSN: 2040-8269

Keywords

Available. Content available
Book part
Publication date: 30 July 2018

Abstract

Details

Marketing Management in Turkey
Type: Book
ISBN: 978-1-78714-558-0

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Book part
Publication date: 30 July 2018

İ. Taylan Dörtyol, Ayşen Coşkun and Olgun Kitapci

Consumption is a way of communication whereby consumers express, position or/and differentiate themselves within their society or affiliated groups. A great part of consumers’…

Abstract

Consumption is a way of communication whereby consumers express, position or/and differentiate themselves within their society or affiliated groups. A great part of consumers’ lives are spent on various purchase activities, and many would be eager to understand the factors underlying those behaviours.

This chapter primarily deals with the cultural, social, psychological and personal factors that affect consumer behaviour. Each of these factors in relation to consumer behaviour is discussed in detail. The types of consumer buying behaviours and the consumer decision-making processes then provide the fundamentals of the topic along with their relevance to Turkish consumers.

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Article
Publication date: 2 July 2024

Mehmet Bağış, Levent Altinay and Metin Saygılı

This study examines firms' strategic entrepreneurial behaviors based on the interaction of regulatory institutions and entrepreneurs' cognition, human capital, and social capital…

180

Abstract

Purpose

This study examines firms' strategic entrepreneurial behaviors based on the interaction of regulatory institutions and entrepreneurs' cognition, human capital, and social capital capabilities.

Design/methodology/approach

Data was collected from 450 exporting companies in Türkiye, which is a developing economy. Smart PLS 4.0 and SPSS 24.0 software were used to analyze the data. The data were examined using structural equation modeling, confirmatory factor analysis, average extracted variance, composite reliability, and Cronbach's alpha analyses.

Findings

The findings show that entrepreneurial cognition, social capital, and regulatory institutions influence each other, this relationship is not confirmed in managerial human capital. Moreover, while managerial cognition affects strategic entrepreneurship behavior, this effect was not supported for managerial human capital and managerial social capital. However, it was determined that only entrepreneurial cognition mediates the relationship between regulatory institutions and strategic entrepreneurial behavior.

Originality/value

This research enables entrepreneurs to understand, navigate, and appreciate the significance of the interactions between regulatory institutions and dynamic managerial capabilities in decision-making. Additionally, the study allows policymakers to develop evidence-based policy designs that equip entrepreneurs with the insights needed to succeed in a competitive and regulatory complex environment.

Details

Journal of Small Business and Enterprise Development, vol. 31 no. 6
Type: Research Article
ISSN: 1462-6004

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Article
Publication date: 27 November 2023

Oğuz Kara, Levent Altinay, Mehmet Bağış, Mehmet Nurullah Kurutkan and Sanaz Vatankhah

Entrepreneurial activity is a phenomenon that increases the economic growth of countries and improves their social welfare. The economic development levels of countries have…

420

Abstract

Purpose

Entrepreneurial activity is a phenomenon that increases the economic growth of countries and improves their social welfare. The economic development levels of countries have significant effects on these entrepreneurial activities. This research examines which institutional and macroeconomic variables explain early-stage entrepreneurship activities in developed and developing economies.

Design/methodology/approach

The authors conducted panel data analysis on the data from the Global Entrepreneurship Monitor (GEM) and International Monetary Fund (IMF) surveys covering the years 2009–2018.

Findings

First, the authors' results reveal that cognitive, normative and regulatory institutions and macroeconomic factors affect early-stage entrepreneurial activity in developed and developing countries differently. Second, the authors' findings indicate that cognitive, normative and regulatory institutions affect early-stage entrepreneurship more positively in developed than developing countries. Finally, the authors' results report that macroeconomic factors are more effective in early-stage entrepreneurial activity in developing countries than in developed countries.

Originality/value

This study provides a better understanding of the components that help explain the differences in entrepreneurship between developed and developing countries regarding institutions and macroeconomic factors. In this way, it contributes to developing entrepreneurship literature with the theoretical achievements of combining institutional theory and macroeconomic indicators with entrepreneurship literature.

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Article
Publication date: 1 September 2023

Liridon Kryeziu, Besnik A. Krasniqi, Mehmet Bağış, Vjose Hajrullahu, Genc Zhushi, Donika Bytyçi and Mirsim Ismajli

This study aims to examine the impact of regulatory, normative and cultural cognitive institutions and firm and individual factors on entrepreneurial behavior.

299

Abstract

Purpose

This study aims to examine the impact of regulatory, normative and cultural cognitive institutions and firm and individual factors on entrepreneurial behavior.

Design/methodology/approach

Using the quantitative research method, the authors collected data from 316 micro, small and medium enterprises (MSMEs) in Kosovo, a transition economy, through a cross-sectional research design. The authors performed exploratory factor analyses, correlation and regression analyses on the data using SPSS 26 and STATA software.

Findings

The research findings indicate that, within transition economies, normative and cultural-cognitive institutions have a positive impact on entrepreneurial behaviors. The authors could not determine the effect of regulatory institutions on entrepreneurial behavior. The authors also discovered that young firms are more inclined toward entrepreneurial behavior than older firms, and micro firms display a stronger entrepreneurial behavior than small firms. Furthermore, family businesses showed a greater tendency for entrepreneurial behavior than nonfamily firms. Interestingly, when the rational decision-making interacts with regulatory institutions, the effect on entrepreneurial behavior is negative.

Research limitations/implications

This study employed a cross-sectional approach to investigate the influence of macro, meso, and micro-level factors on entrepreneurial behavior within a transitioning community across three industries. Future studies could replicate these findings within comparable institutional contexts, employing longitudinal studies that include additional variables beyond those considered in our present study.

Practical implications

Considering the importance of MSMEs for a country’s economic and sustainable development, the authors provide some policy implications. The authors recommend managers carefully evaluate the information gathered while they decide and also increase their capabilities concerning digitalization, which is crucial for their firm’s survival, growth and sustainable competitive advantage.

Originality/value

This paper contributes to the literature and shows and analyses entrepreneurial behavior at institutional (macro), firm-level factors (meso) and managers' rational decision-making (micro), providing evidence from a transition community.

Details

Journal of Enterprising Communities: People and Places in the Global Economy, vol. 18 no. 4
Type: Research Article
ISSN: 1750-6204

Keywords

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