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Article
Publication date: 7 February 2024

Md Atiqur Rahman

The research focused on analysing a unique type of heat exchanger that uses swirling air flow over heated tubes. This heat exchanger includes a round baffle plate with holes and…

Abstract

Purpose

The research focused on analysing a unique type of heat exchanger that uses swirling air flow over heated tubes. This heat exchanger includes a round baffle plate with holes and opposite-oriented trapezoidal air deflectors attached at different angles. The deflectors are spaced at various distances, and the tubes are arranged in a circular pattern while maintaining a constant heat flux.

Design/methodology/approach

This setup is housed inside a circular duct with airflow in the longitudinal direction. The study examined the impact of different inclination angles and pitch ratios on the performance of the heat exchanger within a specific range of Reynolds numbers.

Findings

The findings revealed that the angle of inclination significantly affected the flow velocity, with higher angles resulting in increased velocity. The heat transfer performance was best at lower inclination angles and pitch ratios. Flow resistance decreased with increasing angle of inclination and pitch ratio.

Originality/value

The average thermal enhancement factor decreased with higher inclination angles, with the maximum value observed as 0.94 at a pitch ratio of 1 at an angle of 30°.

Details

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 28 February 2024

Nedal Sawan, Krayyem Al-Hajaya, Mohammad Alshhadat and Rami Ibrahim A. Salem

Focusing on the quality of teaching and learning, this study aims to explore the perceptions of accountancy students in two emerging UK Higher Education Institutions (HEIs) of the…

Abstract

Purpose

Focusing on the quality of teaching and learning, this study aims to explore the perceptions of accountancy students in two emerging UK Higher Education Institutions (HEIs) of the quality of their learning experiences and the impact of these experiences on generic skills development.

Design/methodology/approach

A questionnaire survey was used to collect the data. OLS regression was used to test the hypothesis regarding the impact of student learning experiences (lecturer ability, assessment and curriculum) on generic skills development.

Findings

Students value the lecturer as the most important determinant of the quality of their experience. They rated their assessment programme very positively, and the curriculum suggests that students tend to experience a deep blended approach to learning. They also felt that they acquired a wide range of soft competency skills such as those associated with research, critical thinking and time management. Multivariate findings indicate that lecturer ability and curriculum contribute significantly and positively to generic skills development.

Practical implications

The study provides a benchmark for international accounting and business educators in any efforts to assess the efficacy of HE delivery since the pandemic. By implication, it enables the identification of enhancements to the previous character of delivery and hence offers the means to direct improvements to the student experience. Such improvements can then be seen in the National Student Survey (NSS) scores, thereby positively contributing to the next Teaching Excellence Framework. Additionally, such tangible enhancements in NSS scores may be advantageous to HEIs, in the UK and other Western countries, in their efforts to recruit international students on whom they place great reliance for increased revenue, to their international business education programmes.

Originality/value

This study addresses the research gap surrounding the link between teaching and learning approaches in accounting and the development of generic skills. Furthermore, acknowledging that the COVID-19 pandemic with its imposed structural change in the HE teaching and learning environment ushered in a new model of curriculum delivery, this study reflects on the pre-COVID-19 scenario and gathers student perceptions of their teaching and learning experiences before the changes necessitated by lockdowns. It therefore brings the opportunity to anchor future research exploring the post-COVID-19 environment and secure comparative analyses.

Details

Journal of International Education in Business, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2046-469X

Keywords

Article
Publication date: 29 March 2024

Carolin Decker-Lange, Knut Lange and Andreas Walmsley

The purpose of this study is to examine the underexplored link between entrepreneurship education (EE) and graduate employability in the higher education (HE) sector in the United…

Abstract

Purpose

The purpose of this study is to examine the underexplored link between entrepreneurship education (EE) and graduate employability in the higher education (HE) sector in the United Kingdom (UK).

Design/methodology/approach

The study draws on a thematic content analysis of semi-structured interviews with 45 professionals in UK HE, representing the “supply” side of EE.

Findings

The findings demonstrate a unidirectional link between EE and employability outcomes. This link is affected by societal, stakeholder-related, and teaching and learning-related factors.

Research limitations/implications

Although the value of universities’ initiatives connecting EE and employability for economic development is emphasized, the study does not provide direct empirical evidence for this effect. Macroeconomic research is needed.

Practical implications

EE and employability would benefit from knowledge exchange between universities’ stakeholders and a broader understanding of what constitutes a valuable graduate outcome.

Social implications

The study reveals the benefits of EE on a micro level. Participation in EE supports the connection between individual investments in HE and employability.

Originality/value

Based on human capital theory, many policymakers regard EE as a vehicle through which the relationship between investments in HE and career success on a micro level and economic growth on a macro level can be nurtured. Challenging this logic, the study highlights the potential of institutional theory to explain a contextualization of the link between EE and employability on a national level.

Details

International Journal of Entrepreneurial Behavior & Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1355-2554

Keywords

Article
Publication date: 27 September 2023

Md Atiqur Rahman

The purpose of this experimental research was to examine a novel axial heat exchanger featuring swirling air movement over heated tubes. This apparatus is designed with perforated…

26

Abstract

Purpose

The purpose of this experimental research was to examine a novel axial heat exchanger featuring swirling air movement over heated tubes. This apparatus is designed with perforated circular baffle plates complemented by rectangular air deflectors operating at different inclination angles. The tubes were arranged in a consistent layout parallel to the longitudinal airflow. The deflector’s heightened air-side turbulence initiates the frenzied motion, escalating the surface heat transfer rate.

Design/methodology/approach

The tubes maintained a constant heat flux condition over the surface. In each baffle plate, eight deflectors with identical inclination angles were devised in a reverse position, forming a rotation of air inside a circular duct that held tubes (carrying hot water) which elevated air-side turbulence, thereby enhancing the rate of heat transference on the surface. The baffle plates were equally situated from each other at changing pitch ratios. The Reynolds quantity was preserved in the scope of 16,000–30,000. The performance of the heat exchanger considering pitch ratios and inclination angles was examined.

Findings

The research indicates that when examined under similar conditions, an exchanger with a deflector baffle plate shows a strong dependence on the pitch ratio and inclination angle with a mean rise of 0.19 times in thermal enhancement factor at an inclination angle of 30° and a pitch ratio of 1.2 contrasted with an exchanger with segmental baffle plates.

Originality/value

The result shows the dependence of pitch ratio, Reynolds number and inclination on the heat transfer and friction factor rate.

Details

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 12 February 2024

Charles Anyeng Ambilichu, Godbless Onoriode Akaighe and Dennis Gabriel Pepple

This study draws on Organisation Justice Theory and Social Exchange Theory to examine the effects of the performance appraisal process (PAP) on employee commitment (ECO) via a…

Abstract

Purpose

This study draws on Organisation Justice Theory and Social Exchange Theory to examine the effects of the performance appraisal process (PAP) on employee commitment (ECO) via a serial mediation of performance appraisal outcome (PAO) and employee reward (ERE).

Design/methodology/approach

Survey data were collected from a sample of 363 academics across UK Higher Education Institutions (HEIs), including post-1992 and pre-1992 universities. We tested our hypotheses using partial least squares structural equation modeling (PLS-SEM) with a bias-corrected bootstrapping method.

Findings

The findings show that the PAP positively influences ECO and ERE. PAO and ERE mediate the relationship between the PAP and ECO. However, no significant relationship was found between PAO and ECO.

Practical implications

This study has significant implications for HEIs as it underscores the need for managers to ensure the clarity and accuracy of the PAP and to structure rewards to reflect employees’ efforts, considering they affect ECO.

Originality/value

This study contributes to the current debate on performance appraisal by highlighting the extent to which employees’ commitment to an organisation depends on the PAP, PAO and reward.

Details

Journal of Organizational Effectiveness: People and Performance, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2051-6614

Keywords

Open Access
Article
Publication date: 7 November 2023

Rogers Rugeiyamu and Ajali Mustafa Nguyahambi

The world is experiencing democratic backsliding such that the situation is down back to 1986. This has resulted in the global shrinking of civic space for civil society…

Abstract

Purpose

The world is experiencing democratic backsliding such that the situation is down back to 1986. This has resulted in the global shrinking of civic space for civil society organizations (CSOs). NGOs engaging in advocacy activities are seen to be among the CSOs affected. Using four NGOs cases from Tanzania, the study contributes to the civic space debate by uncovering how advocacy NGOs become resilient.

Design/methodology/approach

The study is anchored in interpretivism and a cross-sectional case study design, following a qualitative approach path. Data were collected through interviews and a documentary review.

Findings

Results show that several strategies such as complying, building community back-up, collaboration, strategic litigation, using digital media and changing the scope are applied. However, strategies face obstacles including scope limitations, expected democratic roles, high cost, changes in the scope and being outsmarted by the government, and hence their effectiveness is questionable.

Research limitations/implications

This study focused on advocacy NGOs. More studies can be conducted for other advocacy-related CSOs on how they become resilient.

Practical implications

While NGOs are allowed to exist in the country, their freedom continue to be curtailed. Even the effectiveness of resiliency becomes temporary and depends on the political will of the existing regime.

Originality/value

Tanzania NGOs have to build strong bonds with citizens, expand the scope of strategies and use deliberative democratic principles to educate the government to change laws and tolerate plural political culture. Also, NGOs in other countries with confined civic space can apply the same.

Details

Journal of Humanities and Applied Social Sciences, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2632-279X

Keywords

Open Access
Article
Publication date: 27 June 2023

Edi Wiraguna

This study aims to identify the location of the micropyle, the role of the micropyle in seed germination and the association between the micropyle size and seed weight of grass…

Abstract

Purpose

This study aims to identify the location of the micropyle, the role of the micropyle in seed germination and the association between the micropyle size and seed weight of grass peas.

Design/methodology/approach

First, the micropyle was identified by cutting the seed in half and observing the seeds under the electron microscope. Second, the micropyle was covered by lanolin to block water imbibition. The rate of imbibition and germination was then observed. Lastly, micropyle sizes of various grass pea genotypes were identified by capturing seed images under a light microscope and converting the sizes to mm2 using computer software (ImageJ).

Findings

The location of micropyle was located nearby the hilum, similar to soybean seeds. Seed imbibition was significantly lower in lanolin application (<87%) than in the control (>124%) after 24 hours of submergence. Germination was a day delay for lanolin application on the micropyle compared to lanolin application on the non-micropyle. The germination delay resulted in a significantly lower germination percentage at <57% on the micropyle lanolin application than at >79% on the non-micropyle lanolin application after 10 days of sowing. There is no correlation between the micropyle size and seed weight.

Originality/value

These findings add information on the location and the role of the micropyle for grass pea seed germination.

Details

Arab Gulf Journal of Scientific Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1985-9899

Keywords

Open Access
Article
Publication date: 14 September 2023

Javier Mula-Falcón and Katia Caballero

Improving and assuring the quality of higher education has become a key element of policy agendas worldwide. To this end, a complete accountability system has been developed…

Abstract

Purpose

Improving and assuring the quality of higher education has become a key element of policy agendas worldwide. To this end, a complete accountability system has been developed through various evaluation procedures. Specifically, this study analyzes the perceptions of university teaching staff on the impact of performance appraisal systems on their professional activity, health and personal lives.

Design/methodology/approach

The study adopted a nonexperimental descriptive and causal-comparative design using a questionnaire that was completed by a sample of 2,183 Spanish teachers. The data obtained were analyzed using descriptive statistics and comparisons of differences.

Findings

The results show that, according to teachers, the evaluation criteria undermine the quality of their work by encouraging them to neglect teaching, increase scientific production and engage in unethical research practices. Their views also emphasize the social and health-related consequences of an increasingly competitive work climate, including increased stress levels. Finally, significant differences are observed regarding gender, professional category and academic discipline, with women, junior faculty and social sciences teachers expressing particularly strong views.

Originality/value

The originality of this study lies in the application of a method that contributes to the international debate through a national perspective (Spain) that has so far received little attention.

Details

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

Keywords

Article
Publication date: 11 May 2023

Ghanshyam Pandey, Surbhi Bansal and Shruti Mohapatra

The purpose of this paper is to examine the market integration and direction of causality of wholesale and retail prices for the chickpea legume in major chickpea markets in India.

Abstract

Purpose

The purpose of this paper is to examine the market integration and direction of causality of wholesale and retail prices for the chickpea legume in major chickpea markets in India.

Design/methodology/approach

In this paper, the authors employ the Johansen co-integration test, Granger causality test, vector autoregression (VAR), and vector error correction model (VECM) to examine the integration of markets. The authors use monthly wholesale and retail price data of the chickpea crop from select markets in India spanning January 2003–December 2020.

Findings

The results of this study strongly confirm the co-integration and interdependency of the selected chickpea markets in India. However, the speed of adjustment of prices in the wholesale market is weakest in Bikaner, followed by Daryapur and Narsinghpur; it is relatively moderate in Gulbarga. In contrast, the speed of adjustment is negative for Bhopal and Delhi, weak for Nasik, and moderate for retail market prices in Bangalore. The results of the causality test show that the Narsinghpur, Daryapur, and Gulbarga markets are the most influential, with bidirectional relations in the case of wholesale market prices. Meanwhile, the Bangalore market is the most connected and effective retail market among the selected retail markets. It has bidirectional price transmission with two other markets, i.e. Bhopal and Nasik.

Research limitations/implications

This paper calls for forthcoming studies to investigate the impact of external and internal factors, such as market infrastructure; government policy regarding self-reliant production; product physical characteristics; and rate of utilization indicating market integration. They should also focus on strengthening information technology for the regular flow of market information to help farmers increase their incomes.

Originality/value

Very few studies have explored market efficiency and direction of causality using both linear and nonlinear techniques for wholesale and retail prices of chickpea in India.

Details

Journal of Agribusiness in Developing and Emerging Economies, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2044-0839

Keywords

Article
Publication date: 11 August 2023

Salvatore Polizzi and Enzo Scannella

This paper aims to assess the impact of regulatory changes on corporate environmental disclosure practices in Europe. More specifically, the authors perform a…

Abstract

Purpose

This paper aims to assess the impact of regulatory changes on corporate environmental disclosure practices in Europe. More specifically, the authors perform a difference-in-differences analysis to study the impact of the Paris agreement (United Nations Climate Change Conference, COP21) and of the French Law 2015-992 on energy transition for green growth.

Design/methodology/approach

The sample consists of the listed companies belonging to the Euro Stoxx 50 index, and they are analysed over the 2010–2019 time horizon by means of an expert validated environmental disclosure dictionary and difference-in-differences analysis.

Findings

The main results show that both regulatory interventions contributed to improving corporate environmental disclosure. The authors also show that firms belonging to the most polluting sectors tend to provide more information on environmental matters, likely in an attempt to divert stakeholders’ attention.

Originality/value

By analysing an under-investigated topic, the paper calls for significant efforts by regulators to find the most suitable solutions to induce firms to increase their levels of transparency on the impact of environmental risks and on how these risks are managed.

Details

Journal of Financial Reporting and Accounting, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1985-2517

Keywords

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