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Article
Publication date: 7 March 2016

Mahmoud Yazdani, Hamidreza Paseh and Mostafa Sharifzadeh

– The purpose of this paper is to find a convenient contact detection algorithm in order to apply in distinct element simulation.

229

Abstract

Purpose

The purpose of this paper is to find a convenient contact detection algorithm in order to apply in distinct element simulation.

Design/methodology/approach

Taking the most computation effort, the performance of the contact detection algorithm highly affects the running time. The algorithms investigated in this study consist of Incremental Sort-and-Update (ISU) and Double-Ended Spatial Sorting (DESS). These algorithms are based on bounding boxes, which makes the algorithm independent of blocks shapes. ISU and DESS algorithms contain sorting and updating phases. To compare the algorithms, they were implemented in identical examples of rock engineering problems with varying parameters.

Findings

The results show that the ISU algorithm gives lower running time and shows better performance when blocks are unevenly distributed in both axes. The conventional ISU merges the sorting and updating phases in its naïve implementation. In this paper, a new computational technique is proposed based on parallelization in order to effectively improve the ISU algorithm and decrease the running time of numerical analysis in large-scale rock mass projects.

Originality/value

In this approach, the sorting and updating phases are separated by minor changes in the algorithm. This tends to a minimal overhead of running time and a little extra memory usage and then the parallelization of phases can be applied. On the other hand, the time consumed by the updating phase of ISU algorithm is about 30 percent of the total time, which makes the parallelization justifiable. Here, according to the results for the large-scale problems, this improved technique can increase the performance of the ISU algorithm up to 20 percent.

Details

Engineering Computations, vol. 33 no. 1
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 29 March 2023

Mirza Rayana Sanzana, Mostafa Osama Mostafa Abdulrazic, Jing Ying Wong, Jaya Kumar Karunagharan and Jason Chia

This paper presents two educational gamified virtual labs and investigates different methods of including gamified elements in virtual labs used for teaching. The purpose of this…

308

Abstract

Purpose

This paper presents two educational gamified virtual labs and investigates different methods of including gamified elements in virtual labs used for teaching. The purpose of this study is to investigate if immersive gamified virtual labs can be used as effective pedagogical tools by properly incorporating them into higher education curricula to assist low-risk active learning and student engagement.

Design/methodology/approach

This research design comprises two gamified virtual labs including nine essential experiments of biology and chemistry integrated into the higher education curriculum of the Foundation of Science at an international University. Students filled in a survey after participating in the lab to shed light on appropriate ways of using gamification approaches in virtual labs.

Findings

From the predominant findings of the study, gamified virtual labs increase student involvement thereby enhancing knowledge development with active learning and may be a potentially suitable pedagogical tool for low-risk interactive learning.

Research limitations/implications

Limitations of the study include findings based on gamified virtual labs but not comparing the gamified virtual labs to simple virtual simulations to further investigate the pedagogical approach and understand the student perceptions in a simple virtual simulation and a gamified virtual lab.

Practical implications

The findings of this study will provide evidence that gamified virtual labs integrated into higher education curricula as supplementary tools for laboratory experimentation improve the educational delivery process.

Originality/value

This research highlights an appropriate way of integrating 3D virtual labs into practical curricula while discussing the benefits.

Details

Journal of Applied Research in Higher Education, vol. 16 no. 1
Type: Research Article
ISSN: 2050-7003

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Article
Publication date: 9 February 2024

Ali Hasaan, Adele Berndt and Mücahit Fişne

The increased importance of sports and athlete brands highlights the need for athletes to pay attention to branding as it has positive impacts. As athletes, Muslim women have not…

250

Abstract

Purpose

The increased importance of sports and athlete brands highlights the need for athletes to pay attention to branding as it has positive impacts. As athletes, Muslim women have not succeeded in building their brands. This study aims to understand the branding challenges facing Muslim female athletes and how to overcome them.

Design/methodology/approach

These branding obstacles and guidelines were explored using qualitative methods – specifically semi-structured interviews with Muslim female athletes and focus groups with experts. Data were analysed using open and axial coding to identify the codes.

Findings

The study identifies three major obstacles to branding by Muslim female athletes. Self-related obstacles, such as knowledge of brand building, social media, personal pressure and a lack of role models, impact the brand-building decision. Social-related (family and society) and sport-related obstacles (participation as women and as Muslims) further complicate this task. Experts provide additional insights regarding these obstacles, suggesting strategies to overcome them.

Research limitations/implications

The research focuses on athletes from one geographical area and has limitations associated with using qualitative methods.

Practical implications

The study suggests how self-, social- and sport-related obstacles are faced by athletes. It provides suggestions for federations, sports codes and other stakeholders to support athletes to overcome these barriers.

Originality/value

This study expands the understanding of the struggles Muslim women face in building their brands as part of an under-represented group.

Details

Journal of Islamic Marketing, vol. 15 no. 7
Type: Research Article
ISSN: 1759-0833

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Article
Publication date: 29 November 2022

Mohammad Khajeh Mehrizi, Mostafa Jokar and Zahra Shahi

Natural colorants are believed to be safe because of their nontoxic, noncarcinogenic and biodegradable nature, and also, the demand for natural dyes is steadily increasing. This…

172

Abstract

Purpose

Natural colorants are believed to be safe because of their nontoxic, noncarcinogenic and biodegradable nature, and also, the demand for natural dyes is steadily increasing. This study aims to investigate the dyeing of polyethylene terephthalate (PET) fabrics under cold plasma and ultraviolet (UV) radiation conditions with Prangos ferulacea.

Design/methodology/approach

In the first, some PET fabrics were modified using UV radiation and some others by cold plasma (oxygen/argon), and then the dyeing of fabrics with the natural dye was done (100°C/130°C) without using metallic mordant. Dyeability (color strengths) of the treated samples, colorfastness to washing, light and rubbing, water absorption time, crease recovery angle, air permeability and mechanical behavior were investigated.

Findings

The maximum color strength (k/s = 4.87) was achieved for the fabric exposed to UV radiation for 2 h and then dyed with Prangos ferulacea at 130 °C. The results indicated that the dyed fabric showed acceptable colorfastness (very good–excellent) properties in washing and rubbing fastness except for colorfastness to light (moderate). The strength and the angle of crease recovery of treated and dyed samples have increased, while the time of water absorption and air permeability have decreased.

Originality/value

The surface modification of PET (UV radiation and plasma treatment) provides a new idea to improve the dyeability of PET with Prangos ferulacea natural dye without using metallic mordant.

Details

Pigment & Resin Technology, vol. 52 no. 3
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 4 June 2024

Ali Asghar Mahmoodi, Mohammadreza Abdoli, Maryam Shahri and Farhad Dehdar

The purpose of this research is to investigate the importance and status of conditional accounting conservatism indicators and financial flexibility for the management of legal…

89

Abstract

Purpose

The purpose of this research is to investigate the importance and status of conditional accounting conservatism indicators and financial flexibility for the management of legal claims of the company during the outbreak of Corona.

Design/methodology/approach

The research method was implemented using statistical analysis in the SPSS environment. The participants of this research can be experts and specialists working in companies admitted to the stock exchange and expert professors in accounting fields; auditing; economy; financial engineering and financial management, categorized. The data related to the localization tool of research variables were collected by snowball sampling method in the summer of 2022.

Findings

One of the main results of the research is that based on the opinions and professional experience of experts and professionals working in companies admitted to the stock exchange and academic experts, within a range of seven, “The number of legal claims of the company with electronic businesses” under the title of the main indicator in the legal claims of the company in the outbreak of Corona from the importance dimension; “Exchange rate fluctuations in financial resilience” under the title of the main indicator in financial resilience in the Corona outbreak from the functional dimension; “The number of legal claims of the company with government institutions” under the title of the main indicator in the company’s legal claims in the Corona outbreak from the functional dimension; “The company’s conservatism score” under the title of the main indicator in the conditional conservatism of accounting in the Corona outbreak from the functional dimension; “oil price fluctuations in financial resilience” under the title of the main indicator in financial resilience in the Corona outbreak from the importance dimension; and “type of industry based on total assets” under the title of the main indicator in the conditional conservatism of accounting in the Corona outbreak was calculated from the importance dimension.

Originality/value

Although the previous literature has studied the direct correlation between accounting conservatism and financial flexibility, this work focuses on examining the direct association between accounting conservatism and financial flexibility in the post-Corona era and is carried out to resolve legal claims.

Details

International Journal of Law and Management, vol. 67 no. 2
Type: Research Article
ISSN: 1754-243X

Keywords

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