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1 – 10 of over 1000
Article
Publication date: 13 June 2024

Seyed Mohammad Hadi Baghdadi, Ehsan Dehghani, Mohammad Hossein Dehghani Sadrabadi, Mahdi Heydari and Maryam Nili

Spurred by the high turnover in the pharmaceutical industry, locating pharmacies inside urban areas along with the high product perishability in this industry, the pharmaceutical…

Abstract

Purpose

Spurred by the high turnover in the pharmaceutical industry, locating pharmacies inside urban areas along with the high product perishability in this industry, the pharmaceutical supply chain management has recently gained increasing attention. Accordingly, this paper unveils an inventory-routing problem for designing a pharmaceutical supply chain with perishable products and time-dependent travel time in an uncertain environment.

Design/methodology/approach

In this study, mathematical programming is employed to formulate a multi-graph network affected by the traffic volume in order to adapt to real-world situations. Likewise, by transforming the travel speed function to the travel time function using a step-by-step algorithm, the first-in-first-out property is warranted. Moreover, the Box–Jenkins forecasting method is employed to diminish the demand uncertainty.

Findings

An appealing result is that the delivery horizon constraint in the under-study multi-graph network may eventuate in selecting a longer path. Our analysis also indicates that the customers located in the busy places in the city are not predominantly visited in the initial and last delivery horizon, which are the rush times. Moreover, it is concluded that integrating disruption management, routing planning and inventory management in the studied network leads to a reduction of costs in the long term.

Originality/value

Applying the time-dependent travel time with a heterogeneous fleet of vehicles on the multi-graph network, considering perishability in the products for reducing inventory costs, considering multiple trips of transfer fleet, considering disruption impacts on supply chain components and utilizing the Box–Jenkins method to reduce uncertainty are the contributions of the present study.

Details

Kybernetes, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 18 June 2024

Wenhuan Ai, Zheng Qing Lei, Li Danyang, Jingming Zeng and Dawei Liu

Highway traffic systems are complex and variable, and studying the bifurcation characteristics of traffic flow systems and designing control schemes for unstable bifurcation…

Abstract

Purpose

Highway traffic systems are complex and variable, and studying the bifurcation characteristics of traffic flow systems and designing control schemes for unstable bifurcation points can alleviate traffic congestion from a new perspective. Bifurcation analysis is used to explain the changes in system stability, identify the unstable bifurcation points of the system, and design feedback controllers to realize the control of the unstable bifurcation points of the traffic system. It helps to control the sudden changes in the stable behavior of the traffic system and helps to alleviate traffic congestion, which is of great practical significance.

Design/methodology/approach

In this paper, we improve the macroscopic traffic flow model by integrating severe weather factors such as rainfall, snowfall, and dust. We use traveling wave transform to convert it into a traffic flow stability model suitable for branching analysis, thus converting the traffic flow problem into a system stability analysis problem. First, this paper derives the existence conditions of the model Hopf bifurcation and saddle-node bifurcation for the improved macroscopic model, and finds the stability mutation point of the system. Secondly, the connection between the stability mutation points and bifurcation points of the traffic system is analyzed. Finally, for the unstable bifurcation point, a nonlinear system feedback controller is designed using Chebyshev polynomial approximation and stochastic feedback control method.

Findings

The Hopf bifurcation is delayed and completely eliminated without changing the equilibrium point of the system, thus controlling the abrupt behavior of the traffic system.

Originality/value

Currently there are fewer studies to explain the changes in the stability of the transportation system through bifurcation analysis, in this paper; we design a feedback controller for the unstable bifurcation point of the system to realize the control of the transportation system. It is a new research method that helps to control the sudden change of the stable behavior of the traffic system and helps to alleviate traffic congestion, which is of great practical significance.

Details

Engineering Computations, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0264-4401

Keywords

Open Access
Article
Publication date: 21 May 2024

Luca Camanzi, Sina Ahmadi Kaliji, Paolo Prosperi, Laurick Collewet, Reem El Khechen, Anastasios Ch. Michailidis, Chrysanthi Charatsari, Evagelos D. Lioutas, Marcello De Rosa and Martina Francescone

The aim of this study was to investigate consumer preferences and profile their food-related lifestyles, as well as to identify consumer groups with similar attitudes/behaviours…

249

Abstract

Purpose

The aim of this study was to investigate consumer preferences and profile their food-related lifestyles, as well as to identify consumer groups with similar attitudes/behaviours in the Euro-Mediterranean fruit and vegetable market.

Design/methodology/approach

A structured questionnaire was designed drawing from the food related lifestyles instrument and including other factors relevant to fruit and vegetable consumer preferences. The data were collected in an online survey with 925 participants in France, Greece, and Italy. A principal component analysis was conducted to interpret and examine consumers' fruit and vegetable related lifestyles. In addition, a cluster analysis was performed to identify different consumer segments, based on the core dimensions of the food-related lifestyle approach.

Findings

In each country, three primary consumer segments were distinguished. Health-conscious individuals were predominant in France and Greece, while quality-conscious consumers were prevalent in Italy. These classifications were determined considering various factors such as purchase motivation, perception of product quality, health concerns, environmental certifications, and price sensitivity.

Originality/value

The food-related lifestyle approach has been adapted instrument to create a customised survey instrument specifically designed to capture the intricacies of fruit and vegetable consumer preferences and priorities in three Euro-Mediterranean Countries.

Article
Publication date: 2 April 2024

Guanglu Yang, Si Chen, Jianwei Qiao, Yubao Liu, Fuwen Tian and Cunxiang Yang

The purpose of this paper is to present the influence of inter-turn short circuit faults (ITSF) on electromagnetic vibration in high-voltage line-starting permanent magnet…

Abstract

Purpose

The purpose of this paper is to present the influence of inter-turn short circuit faults (ITSF) on electromagnetic vibration in high-voltage line-starting permanent magnet synchronous motor (HVLSPMSMS).

Design/methodology/approach

In this paper, the ampere–conductor wave model of HVLSPMSM after ITSF is established. Second, a mathematical model of the magnetic field after ITSF is established, and the influence law of the ITSF on the air-gap magnetic field is analyzed. Further, the mathematical expression of the electromagnetic force density is established based on the Maxwell tensor method. The impact of HVLSPMSM torque ripple frequency, radial electromagnetic force spatial–temporal distribution and rotor unbalanced magnetic tension force by ITSF is revealed. Finally, the electromagnetic–mechanical coupling model of HVLSPMSM is established, and the vibration spectra of the motor with different degrees of ITSF are solved by numerical calculation.

Findings

In this study, it is found that the 2np order flux density harmonics and (2 N + 1) p order electromagnetic forces are not generated when ITSF occurs in HVLSPMSM.

Originality/value

By analyzing the multi-harmonics of HVLSPMSM after ITSF, this paper provides a reliable method for troubleshooting from the perspective of vibration and torque fluctuation and rotor unbalanced electromagnetic force.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering , vol. 43 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 24 April 2024

Mohsen Jami, Hamidreza Izadbakhsh and Alireza Arshadi Khamseh

This study aims to minimize the cost and time of blood delivery in the whole blood supply chain network (BSCN) in disaster conditions. In other words, integrating all strategic…

Abstract

Purpose

This study aims to minimize the cost and time of blood delivery in the whole blood supply chain network (BSCN) in disaster conditions. In other words, integrating all strategic, tactical and operational decisions of three levels of blood collection, processing and distribution leads to satisfying the demand at the right time.

Design/methodology/approach

This paper proposes an integrated BSCN in disaster conditions to consider four categories of facilities, including temporary blood collection centers, field hospitals, main blood processing centers and medical centers, to optimize demand response time appropriately. The proposed model applies the location of all permanent and emergency facilities in three levels: blood collection, processing and distribution. Other essential decisions, including multipurpose facilities, emergency transportation, inventory and allocation, were also used in the model. The LP metric method is applied to solve the proposed bi-objective mathematical model for the BSCN.

Findings

The findings show that this model clarifies its efficiency in the total cost and blood delivery time reduction, which results in a low carbon transmission of the blood supply chain.

Originality/value

The researchers proposed an integrated BSCN in disaster conditions to minimize the cost and time of blood delivery. They considered multipurpose capabilities for facilities (e.g. field hospitals are responsible for the three purposes of blood collection, processing and distribution), and so locating permanent and emergency facilities at three levels of blood collection, processing and distribution, support facilities, emergency transportation and traffic on the route with pollution were used to present a new model.

Article
Publication date: 12 June 2024

Xiaoshuai Peng, Shoufeng Ji, Lele Zhang, Russell G. Thompson and Kangzhou Wang

Modular capacity units enable rapid reconfiguration, providing tactical flexibility to efficiently meet customer demand during disruptions and ensuring sustainability. Moreover…

Abstract

Purpose

Modular capacity units enable rapid reconfiguration, providing tactical flexibility to efficiently meet customer demand during disruptions and ensuring sustainability. Moreover, the Physical Internet (PI) enhances the potential of modular capacity in addressing efficiency, sustainability, and resilience challenges. To evaluate the sustainability and resilience advantages of the PI-enabled reconfigurable modular system (PI-M system), this paper studies a PI-enabled sustainable and resilient production-routing problem with modular capacity.

Design/methodology/approach

We develop a multi-objective optimization model to assess the sustainability and resilience benefits of combining PI and modular capacity in a chemical industry case study. A hybrid solution approach, combining the augmented e-constraint method, construction heuristic, and hybrid adaptive large neighborhood search, is developed.

Findings

The experimental results reveal that the proposed solution approach is capable of obtaining better solutions than the Gurobi and the existing heuristic in a shorter running time. Moreover, compared with the traditional system, the PI only and traditional with modular capacity systems, PI-M system has significant advantages in both sustainability and resilience.

Originality/value

To the best of our knowledge, this study is the first to integrate the PI and modular capacity and investigate sustainability and resilience in the production-routing problem.

Details

Kybernetes, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 17 March 2023

Arunodaya Raj Mishra, Mustafa Ergün, Basil Oluoch Okoth, Selçuk Korucuk, Ahmet Aytekin and Çağlar Karamaşa

Due to the current pandemic, the importance of logistics functions and decisions is well understood both at the level of companies and users. Logistics systems and related…

Abstract

Purpose

Due to the current pandemic, the importance of logistics functions and decisions is well understood both at the level of companies and users. Logistics systems and related decisions are of vital importance in making supply chains effective, efficient and without disruption. Logistic pressure factors may emerge at different points along the logistics process, and given the role of logistics decisions as one of the important indicators of competitiveness, the determination of the logistics pressures that are likely to increase the costs of business, and their causative factors are a vital aspect of the logistics decision-making process. The study aims to provide assistance in the selection of the most ideal logistics decision by ranking the pressure factors affecting the logistics system, especially during the pandemic period for logistics enterprises operating in Ordu and Giresun provinces and which have a corporate identity.

Design/methodology/approach

In this study, it is aimed to make the most ideal logistics decision selection by ranking the pressure factors affecting the logistics system, especially during the pandemic period for the logistics enterprises operating in Ordu and Giresun provinces and having a corporate identity. For that purpose interval-valued Pythagorean fuzzy (IVPF)–analytic hierarchy process (AHP) based combinative distance-based assessment (CODAS) methodology was used. Additionally sensitivity and comparison analysis were discussed.

Findings

Competitive pressure was found as the most important pressure factor affecting the logistics system during the pandemic period. Change in regulatory rules was the pressure factor found to have the least effect on the logistics system. Using the weights of logistics pressure factors, “Operational Decisions” was found to be the most ideal logistics decision selection.

Research limitations/implications

The findings provide support for the evaluation of logistical pressures and decision options by presenting a decision model capable of processing ambiguous information. During a pandemic or similar period, the study assists decision makers in determining a new route. The findings will also call business managers' attention to logistical pressure factors and lead them toward more realistic and feasible practices in the logistics decision-making process.

Originality/value

This study provided an effective and applicable solution to a decision-making problem in the logistics sector including logistics pressure factors and the selection of logistics decisions. In this context, a methodology was presented that will allow businesses to self-evaluate their own logistics pressure factors and the selection of optimal solutions.

Details

Kybernetes, vol. 53 no. 7
Type: Research Article
ISSN: 0368-492X

Keywords

Book part
Publication date: 21 June 2024

Sunil K. Verma, Saswati Bhattacharya and Tushar Singh

The aim of the present study was to identify the pattern of intergenerational relations in interdependent society, examine the role of family functioning on it and the role of…

Abstract

The aim of the present study was to identify the pattern of intergenerational relations in interdependent society, examine the role of family functioning on it and the role of demographic variables (location, economic class, and familial role) on intergenerational relations, and study the processes of different types of intergenerational relations (solidarity, ambivalence, and conflict). India being an interdependent society emphasizes the family bonds where more than one generation cohabits together. Thus, exploring the intergenerational ties and family dynamics becomes an important factor to examine. The present study anchored in Kagitcibasi’s Family Change Theory investigates intergenerational relationships in India, examining the shift from joint to modified extended families. With 720 participants in urban and rural areas, the research explores cultural attitudes, socioeconomic variables, and coping strategies and intergenerational dynamics within families. Findings reveal prevalent solidarity, ambivalence, and affection, with rural–urban distinctions. The study underscores the importance of understanding intergenerational dynamics, providing insights for scholars, policymakers, and social workers to enhance support networks. The research contributes valuable knowledge to address evolving family needs in the context of changing societal norms and economic factors.

Details

Indian Families: Contemporary Family Structures and Dynamics
Type: Book
ISBN: 978-1-83797-595-2

Keywords

Article
Publication date: 17 June 2024

Yuan Li, Matthias Ruefenacht and Peter Maas

This paper aims to explore the negative effect of power distance belief (PDB) on do-it-yourself (DIY) preference. It extends previous studies by delving into the underlying…

Abstract

Purpose

This paper aims to explore the negative effect of power distance belief (PDB) on do-it-yourself (DIY) preference. It extends previous studies by delving into the underlying mechanism and identifying three theoretically driven moderators that could mitigate this negative effect.

Design/methodology/approach

The paper uses secondary data at the country level and conducts three experiments involving participants from the USA and Germany.

Findings

The results suggest that the adverse impact of PDB on DIY preference exists through the underlying mechanism of attitude toward customer power. This negative effect can be mitigated when individuals with high PDB focus on status, find themselves in a position of low power or engage in activities within a private consumption setting.

Practical implications

For DIY companies, this study offers crucial insights into the impact of cultural values on consumers’ DIY preferences. By customizing their marketing communications, companies can resonate with high PDB customers more effectively.

Originality/value

This research enhances DIY literature by introducing novel moderators within a theoretical framework, explaining why DIY preference might be low among individuals with high PDB and suggests ways to attenuate this effect.

Details

Journal of Consumer Marketing, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0736-3761

Keywords

Book part
Publication date: 4 July 2024

Claudiu George Bocean, Anca Antoaneta Vărzaru, Dorel Berceanu, Dalia Simion, Mădălina Giorgiana Mangra and Marian Cazacu

In recent decades, there has been a significant increase in global concern regarding the impact of economic activities on the environment and climate change. In this context…

Abstract

In recent decades, there has been a significant increase in global concern regarding the impact of economic activities on the environment and climate change. In this context, green entrepreneurship has become a growing trend in the business world. One of the most important benefits of green entrepreneurship is enhancing energy efficiency and resource utilization. By reducing the resources required to produce a product or deliver a service, green entrepreneurship can contribute to cost reduction and operational efficiency improvement. By implementing sustainable business practices, organizations can enhance their image in the eyes of consumers and attract new customers who are environmentally conscious. This chapter addresses the identified gap in the literature regarding the influence of green entrepreneurial activities on organizational financial performance from the perspective of employees in organizations engaged in such activities (waste reduction, waste recycling, energy conservation, air pollutant reduction, packaging reduction, sustainable transportation). Organizational financial performance is measured through perceived performance compared to the previous year and performance relative to expectations. Two visible financial indicators have been selected for analysis: turnover and net profit.

Details

Entrepreneurship and Development for a Green Resilient Economy
Type: Book
ISBN: 978-1-83797-089-6

Keywords

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