Search results

1 – 10 of 16
Per page
102050
Citations:
Loading...
Access Restricted. View access options
Article
Publication date: 4 November 2014

Esmaeil Shieh, Kyoumars Habibi, Kamal Torabi and Houshmand E. Masoumi

Zone 6 of Tehran, with a populations of 220,000 people (3.6 per cent of the city population) and 20 km2 area (3 per cent of the city area), is one of the main municipal zones of…

236

Abstract

Purpose

Zone 6 of Tehran, with a populations of 220,000 people (3.6 per cent of the city population) and 20 km2 area (3 per cent of the city area), is one of the main municipal zones of Tehran. Major land-uses, like ministries, embassies, universities, general hospitals and medical centers, big financial firms, and so on, manifest the high importance of this region on a local and national scale. Thus, it is necessary to pay close attention to issues concerning crisis management in this area.

Design/methodology/approach

In this paper, by using indexes such as access to medical centers, street inclusion, building and population density, land-use, peak ground acceleration and building quality, vulnerability degree of street networks in zone 6 against the earthquake is calculated through overlaying maps and data in combination with inversion hierarchical weight process method and geographic information systems.

Findings

This article concludes that buildings alongside the streets with high population and building density, low building quality, far to rescue centers and high level of inclusion represent high rate of vulnerability, compared with other buildings. Also, by moving from north to south of the zone, the vulnerability increases. Likewise, highways and streets with substantial width and low building and population density hold little values of vulnerability. Thus, streets with high level of inclusion, building and population density present further vulnerability.

Originality/value

It is expected that the results of this paper be used by the urban decision-makers. Due to high vulnerability of most parts of the urban textures of Tehran, similar researches will have importance for preparation for the future possible earthquakes.

Details

International Journal of Disaster Resilience in the Built Environment, vol. 5 no. 4
Type: Research Article
ISSN: 1759-5908

Keywords

Access Restricted. View access options
Article
Publication date: 13 January 2022

Umar Muhammad Modibbo, Musa Hassan, Aquil Ahmed and Irfan Ali

Supplier selection in the supply chain network (SCN) has strategic importance and involves multiple factors. The multi-criteria nature of the problem coupled with environmental…

1003

Abstract

Purpose

Supplier selection in the supply chain network (SCN) has strategic importance and involves multiple factors. The multi-criteria nature of the problem coupled with environmental uncertainty requires several procedures and considerations. The issue of decision-making in selecting the best among various qualified suppliers remains the major challenge in the pharmaceutical industry. This study investigated the multi-criteria multi-supplier decision-making process and proposed a model for supplier selection problems based on mixed-integer linear programming.

Design/methodology/approach

The concept of principal component analysis (PCA) was used to reduce data dimensionality, and the four best criteria have been considered and selected. The result is subjected to decision-makers’ (DMs’) reliability test using the concept of a triangular fuzzy number (TFN). The importance of each supplier to each measure is established using fuzzy technique for order preference by similarity to an ideal solution approach, and the suppliers have ranked accordingly.

Findings

This study proposes a mixed integer linear programming model for supplier selection in a pharmaceutical company. The effectiveness of the proposed model has been demonstrated using a numerical example. The solution shows the model's applicability in making a sound decision in pharmaceutical companies in the space of reality. The model proposed is simple. Readily commercial packages such as LINDO/LINGO and GAMS can solve the model.

Research limitations/implications

This research contributed to the systematic manner of supplier selection considering DMs’ value judgement under a fuzzy environment and is limited to the case study area. However, interested researchers can apply the study in other related manufacturing industries. However, the criteria have to be revisited to suit that system and might require varying ratings based on the experts' opinions in that field.

Practical implications

This work suggests more insights practically by considering a realistic and precise investigation based on a real-life case study of pharmaceutical companies with six primary criteria and twenty-four sub-criteria. The study outcome will assist organizations and managers in conducting the best decision objectively by selecting the best suppliers with their various standards and terms among many available contenders in the manufacturing industry.

Originality/value

In this paper, the authors attempted to identify the most critical attributes to be preserved by the top managers (DMs) while selecting suppliers in pharmaceutical companies. The study proposed an MILP model for supplier selection in the pharmaceutical company using fuzzy TOPSIS.

Access Restricted. View access options
Article
Publication date: 13 June 2019

Zhe Tian, Seyed Amin Bagherzadeh, Kamal Ghani, Arash Karimipour, Ali Abdollahi, Mehrdad Bahrami and Mohammad Reza Safaei

This paper aims to propose a new nonlinear function estimation fuzzy system as a novel statistical approach to estimate nanofluids’ thermal conductivity.

122

Abstract

Purpose

This paper aims to propose a new nonlinear function estimation fuzzy system as a novel statistical approach to estimate nanofluids’ thermal conductivity.

Design/methodology/approach

A fuzzy system having a product inference engine, a singleton fuzzifier, a center average defuzzifier and Gaussian membership functions is proposed for this purpose.

Findings

Results indicate that the proposed fuzzy system can predict the thermal conductivity of Al2O3/paraffin nanofluid with appropriate precision and generalization and it also outperforms the classic interpolation methods.

Originality/value

A new nonlinear function estimation fuzzy system was introduced as a novel statistical approach to estimate nanofluids’ thermal conductivity for the first time.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 30 no. 6
Type: Research Article
ISSN: 0961-5539

Keywords

Access Restricted. View access options
Article
Publication date: 23 January 2024

Chinedu Onyeme and Kapila Liyanage

This study investigates the integration of Industry 4.0 (I4.0) technologies with condition-based maintenance (CBM) in upstream oil and gas (O&G) operations, focussing on…

165

Abstract

Purpose

This study investigates the integration of Industry 4.0 (I4.0) technologies with condition-based maintenance (CBM) in upstream oil and gas (O&G) operations, focussing on developing countries like Nigeria. The research identifies barriers to this integration and suggests solutions, intending to provide practical insights for improving operational efficiency in the O&G sector.

Design/methodology/approach

The study commenced with an exhaustive review of extant literature to identify existing barriers to I4.0 implementation and contextualise the study. Subsequent to this foundational step, primary data are gathered through the administration of carefully constructed questionnaires targeted at professionals specialised in maintenance within the upstream O&G sector. A semi-structured interview was also conducted to elicit more nuanced, contextual insights from these professionals. Analytically, the collected data were subjected to descriptive statistical methods for summarisation and interpretation with a measurement model to define the relationships between observed variables and latent construct. Moreover, the Relative Importance Index was utilised to systematically prioritise and rank the key barriers to I4.0 integration to CBM within the upstream O&G upstream sector.

Findings

The most ranked obstacles in integrating I4.0 technologies to the CBM strategy in the O&G industry are lack of budget and finance, limited engineering and technological resources, lack of support from executives and leaders of the organisations and lack of competence. Even though the journey of digitalisation has commenced in the O&G industry, there are limited studies in this area.

Originality/value

The study serves as both an academic cornerstone and a practical guide for the operational integration of I4.0 technologies within Nigeria's O&G upstream sector. Specifically, it provides an exhaustive analysis of the obstacles impeding effective incorporation into CBM practices. Additionally, the study contributes actionable insights for industry stakeholders to enhance overall performance and achieve key performance indices (KPIs).

Details

International Journal of Quality & Reliability Management, vol. 41 no. 6
Type: Research Article
ISSN: 0265-671X

Keywords

Available. Open Access. Open Access
Article
Publication date: 25 May 2023

Siraj Kariyilaparambu Kunjumuhammed, Bassam Khalil Hamdan Tabash and Vaidehi Pandurugan

This research aims to examine the educational philosophy of teachers in classrooms. Teachers' educational philosophy influences the power balance, course content function, student…

2022

Abstract

Purpose

This research aims to examine the educational philosophy of teachers in classrooms. Teachers' educational philosophy influences the power balance, course content function, student and teacher roles, responsibility for learning and assessment purposes and processes. The research also analyzes whether gender, qualification, specialization and experience significantly influence classroom educational philosophies.

Design/methodology/approach

The study utilized a quantitative research design, utilizing data from 193 teachers working in a public higher education institution in the Sultanate of Oman. The study utilized a survey method to solicit data from the respondents. Besides utilizing descriptive statistics such as mean and standard deviation, the study used analysis of variance (ANOVA) and t-test to test the hypotheses.

Findings

Analysis revealed an instructional strategy's preference, including elements of both teacher-centered and student-centered educational philosophies. Elements of progressivism, constructivism, reconstructivism and perennialism are more relevant in the teacher's instructional design. The results show no significant differences in teachers' pedagogical philosophy that exist based on gender, specialization and experience. However, teachers' age significantly influences their educational philosophy preferences.

Research limitations/implications

This research centers on a public higher education institution in the Sultanate of Oman, with a particular focus on the Department of Business Studies. This resarch delimits its discussion on teachers' chosen educational philosophy. Other possible factors may also impact student retention and effective teaching and learning.

Practical implications

This research offers valuable insights to academicians, higher education administrators, and policymakers. Specifically, this research emphasizes the significance of employing a blended approach, which incorporates both student-centered and teacher-centered educational philosophies, to enhance student engagement, retention, and effective teaching and learning.

Social implications

This research emphasizes the importance of educators' adoption of a blended educational philosophy in promoting student retention and engagement within higher education institutions. To achieve desirable outcomes, policymakers in higher education must ascertain which educational philosophy is most effective in the classroom. Additionally, ensuring congruence between preferred educational philosophy and teachers’  instructional practices is vital in facilitating effective teaching and learning.

Originality/value

To the best of the authors’ knowledge, this study is the first of its kind among teachers in higher education in the Sultanate of Oman. The outcome of this study helps detail the specific strategies teachers deploy and categorize into various educational philosophies.

Details

Arab Gulf Journal of Scientific Research, vol. 42 no. 3
Type: Research Article
ISSN: 1985-9899

Keywords

Access Restricted. View access options
Article
Publication date: 8 August 2019

Ahmed Abou El-Azm Aly and Wagdi G. Habashi

Computational fluid dynamics (CFD) simulation of the flow field around marine propellers is challenging because of geometric complexity and rotational effects. To capture the flow…

168

Abstract

Purpose

Computational fluid dynamics (CFD) simulation of the flow field around marine propellers is challenging because of geometric complexity and rotational effects. To capture the flow structure, grid quality and distribution around the blades is primordial. This paper aims to demonstrate that solution-based automatic mesh optimization is the most logical and practical way to achieve optimal CFD solutions.

Design/methodology/approach

In the current paper, open water propeller performance coefficients such as thrust and torque coefficients are numerically investigated. An anisotropic mesh adaptation technique is applied, believed for the first time, to marine propellers and to two computational domains.

Findings

The current study’s performance coefficients are compared with other previously published CFD results and improvements in terms of accuracy and computational cost are vividly demonstrated for different advance coefficients, as well as a much sharper capture of the complex flow features.

Originality/value

It will be clearly demonstrated that these two improvements can be achieved, surprisingly, at a much lower meshing and computational cost.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 29 no. 9
Type: Research Article
ISSN: 0961-5539

Keywords

Access Restricted. View access options
Article
Publication date: 19 April 2022

Samiah Jaber Altarawneh and Raid Al-Adaileh

This study aims to examine the impact of knowledge management processes (KMPs) on business transformation (BT) as mediated by business agility (BA).

201

Abstract

Purpose

This study aims to examine the impact of knowledge management processes (KMPs) on business transformation (BT) as mediated by business agility (BA).

Design/methodology/approach

The study is a quantitative, descriptive and analytical study. A two-stage sampling was selected. A total of 380 questionnaires were distributed using a self-administered survey to six companies representing the study context. A total of 362 questionnaires were collected and analyzed using SPSS and Path analysis (AMOS-22), with a response rate of 95.2%.

Findings

The study revealed that creation, storage, sharing and application of knowledge had statistically significant impact on BT. Moreover, the results revealed that BA had a positive effect on BT. Finally, this study confirms the mediating role of BA.

Practical implications

This study has several practical implications. These include, but are not limited to, more focus on both the KMPs and BT dimensions to improve their levels. There is also a need to search for other factors that can support BT efforts to enhance the growth potential and survival of business organizations.

Originality/value

The study confirms that KMPs can facilitate transforming of business to cope with unending environmental changes. Considering the scarcity of the available empirical as well as theoretical studies within the Jordanian as well as the overall Arab countries context, the study and its findings are expected to provide some insights and useful contribution concerning the potential mediating impact of BA, which, as revealed by the literature review, has rarely been considered in previous studies. This could open the door for further research to understand the mechanisms of BT and its predictive variables.

Details

Global Knowledge, Memory and Communication, vol. 72 no. 8/9
Type: Research Article
ISSN: 2514-9342

Keywords

Access Restricted. View access options
Article
Publication date: 30 November 2023

Muhammad Waqas, Sadaf Rafiq and Jiang Wu

The COVID-19 outbreak has disrupted the habits of customers as well as their shopping behavior. This study aims to critically examine the associated benefits and challenges of…

671

Abstract

Purpose

The COVID-19 outbreak has disrupted the habits of customers as well as their shopping behavior. This study aims to critically examine the associated benefits and challenges of online shopping from the perspective of customers in the COVID-19 pandemic.

Design/methodology/approach

A systematic review of the relevant literature published between 2020 and 2022 was conducted via performing comprehensive search query in leading scholarly databases “Scopus and Web of Science” with the restriction of their predefined subject category of “Business.” Overall, 30 research studies were selected for the review and a significant number of studies were published in 2021 (n = 15).

Findings

The research findings revealed that customers are motivated to shop online because of perceived benefits such as time-saving, convenience, 24/7 accessibility, interactive services without physical boundaries, trust, website attractiveness and cost-saving. However, challenging factors such as financial scams, privacy concerns, poor quality of products and services, fake promotions and reduced social interaction have hindered the growth of online shopping. The recommendations regarding designing marketing strategies, secured transaction, multiple payment options, trust building, protection of privacy, promotion via social media, effective mechanism to secure and timely delivery of product are helpful to improve the service quality of online shopping.

Originality/value

The outcomes of this research are valuable to online retailers and policymakers, as it highlights how the benefits can enhance customers’ shopping intentions and minimize the impact of associated challenges. This study also recommends the redesigning of user-friendly interfaces of online shopping websites and ensures their privacy, security and performance on a regular basis.

Details

Global Knowledge, Memory and Communication, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2514-9342

Keywords

Access Restricted. View access options
Article
Publication date: 21 July 2023

Deepak Datta Nirmal, K. Nageswara Reddy and Sujeet Kumar Singh

The main purpose of this study is to provide a comprehensive review and critical insights of the application of fuzzy methods in modeling, assessing and understanding the various…

882

Abstract

Purpose

The main purpose of this study is to provide a comprehensive review and critical insights of the application of fuzzy methods in modeling, assessing and understanding the various aspects of green and sustainable supply chains (SSCs).

Design/methodology/approach

The present study conducts a systematic literature review (SLR) and bibliometric analysis of 252 research articles. This study employs various tools such as VOSviewer version 1.6.10, Publish or Perish, Mendeley and Excel that aid in descriptive analysis, bibliometric analysis and network visualization. These tools have been used for performing citation analysis, top authors' analysis, co-occurrence of keywords, cluster and content analysis.

Findings

The authors have divided the literature into seven application areas and discussed detailed insights. This study has observed that research in the social sustainability area, including various issues like health and safety, labor rights, discrimination, etc. is scarce. Integration of the Industry 4.0 technologies like blockchain, big data analytics, Internet of Things (IoT) with the sustainable and green supply chain (GSC) is a promising field for future research.

Originality/value

The authors' contribution primarily lies in providing the integrated framework which shows the changing trends in the use of fuzzy methods in the sustainability area classifying and consolidating green and sustainable supply chain management (SSCM) literature in seven major areas where fuzzy methods are predominantly applied. These areas have been obtained after the analysis of clusters and content analysis of the literature presenting key insights from the past and developing the conceptual framework for future research studies.

Details

Benchmarking: An International Journal, vol. 31 no. 5
Type: Research Article
ISSN: 1463-5771

Keywords

Access Restricted. View access options
Article
Publication date: 10 September 2024

Devnaad Singh, Anupam Sharma, Rohit Kumar Singh and Prashant Singh Rana

Natural calamities like earthquakes, floods and epidemics/pandemics like COVID-19 significantly disrupt almost all the supply networks, ranging from medicines to numerous…

384

Abstract

Purpose

Natural calamities like earthquakes, floods and epidemics/pandemics like COVID-19 significantly disrupt almost all the supply networks, ranging from medicines to numerous daily/emergency use items. Supply Chain Resilience is one such option to overcome the impact of the disruption, which is achieved by developing supply chain factors with Artificial Intelligence (AI) and Big Data Analytics (BDA).

Design/methodology/approach

This research examines how organizations using AI and BDA can bring resilience to supply chains. To achieve the objective, the authors developed the methodology to gather useful information from the literature studied and developed the Total Interpretive Structural Modeling (TISM) by consulting 44 supply chain professionals. The authors developed a quantitative questionnaire to collect 229 responses and further test the model. With the analysis, a conceptual and comprehensive framework is developed.

Findings

A major finding, this research advocates that supply chain resilience is contingent upon utilizing supply chain analytics. An empirical study provides further evidence that the utilization of supply chain analytics has a positive and favorable effect on the flexibility of demand forecasting to inventory management, resulting in increased efficiency.

Originality/value

Few studies demonstrate the impact of advanced technology in building resilient supply chains by enhancing their factors. To the best of the authors' knowledge, no earlier researcher has attempted to infuse AI and BDA into supply chain factors to make them resilient.

Details

Business Process Management Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1463-7154

Keywords

1 – 10 of 16
Per page
102050