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Open Access
Article
Publication date: 10 January 2020

Slawomir Koziel and Anna Pietrenko-Dabrowska

This study aims to propose a computationally efficient framework for multi-objective optimization (MO) of antennas involving nested kriging modeling technology. The technique is…

Abstract

Purpose

This study aims to propose a computationally efficient framework for multi-objective optimization (MO) of antennas involving nested kriging modeling technology. The technique is demonstrated through a two-objective optimization of a planar Yagi antenna and three-objective design of a compact wideband antenna.

Design/methodology/approach

The keystone of the proposed approach is the usage of recently introduced nested kriging modeling for identifying the design space region containing the Pareto front and constructing fast surrogate model for the MO algorithm. Surrogate-assisted design refinement is applied to improve the accuracy of Pareto set determination. Consequently, the Pareto set is obtained cost-efficiently, even though the optimization process uses solely high-fidelity electromagnetic (EM) analysis.

Findings

The optimization cost is dramatically reduced for the proposed framework as compared to other state-of-the-art frameworks. The initial Pareto set is identified more precisely (its span is wider and of better quality), which is a result of a considerably smaller domain of the nested kriging model and better predictive power of the surrogate.

Research limitations/implications

The proposed technique can be generalized to accommodate low- and high-fidelity EM simulations in a straightforward manner. The future work will incorporate variable-fidelity simulations to further reduce the cost of the training data acquisition.

Originality/value

The fast MO optimization procedure with the use of the nested kriging modeling technology for approximation of the Pareto set has been proposed and its superiority over state-of-the-art surrogate-assisted procedures has been proved. To the best of the authors’ knowledge, this approach to multi-objective antenna optimization is novel and enables obtaining optimal designs cost-effectively even in relatively high-dimensional spaces (considering typical antenna design setups) within wide parameter ranges.

Details

Engineering Computations, vol. 37 no. 4
Type: Research Article
ISSN: 0264-4401

Keywords

Open Access
Article
Publication date: 9 March 2015

Aristides Matopoulos, Ana Cristina Barros and J.G.A.J. (Jack) van der Vorst

The study aims to define a research agenda for creating resource-efficient supply chains (RESCs) by identifying and analysing their key characteristics as well as future research…

15595

Abstract

Purpose

The study aims to define a research agenda for creating resource-efficient supply chains (RESCs) by identifying and analysing their key characteristics as well as future research opportunities.

Design/methodology/approach

We follow a systematic review method to analyse the literature and to understand RESC, taking a substantive theory approach. Our approach is grounded in a specific domain, the agri-food sector, because it is an intensive user of an extensive range of resources.

Findings

The review shows that works of literature has looked at the use of resources primarily from the environmental impact perspective. There is a need to explore whether or not and how logistics/supply chain decisions will affect the overall configuration of future food supply chains in an era of resource scarcity and depletion and what the trade-offs will be.

Research limitations/implications

The paper proposes an agenda for future research in the area of RESC. The framework proposed along with the key characteristics identified for RESC can be applied to other sectors.

Practical implications

Our research should facilitate further understanding of the implications and trade-offs of supply chain decisions taken on the use of resources by supply chain managers.

Originality/value

The paper explores the interaction between supply chains and natural resources and defines the key characteristics of RESC.

Details

Supply Chain Management: An International Journal, vol. 20 no. 2
Type: Research Article
ISSN: 1359-8546

Keywords

Open Access
Article
Publication date: 4 October 2021

Chris Ó. Rálaigh and Sarah Morton

International policy approaches to cannabis production and use are changing rapidly, and within the Irish context, alternatives to prohibition are being considered. This study…

1777

Abstract

Purpose

International policy approaches to cannabis production and use are changing rapidly, and within the Irish context, alternatives to prohibition are being considered. This study aims to explore policymaker’s attitudes towards the decriminalisation and legal regulation of cannabis for recreational use in the midst of an unfolding policy process, examining the degree which a “policy window” might be open for the implementation of cannabis policy change.

Design/methodology/approach

Semi-structured interviews were held with eight key informants within the policy field in Dublin, Ireland. Kingdon’s (2014) Multiple Streams framework was used to consider whether the problems, policy and political streams were aligning to support progressive policy change.

Findings

Irish policymakers indicated broad support for the decriminalisation of cannabis. The legal regulation of cannabis received more qualified support. Existing policy was heavily criticised with criminalisation identified as a clear failure. Of particular interest was the willingness of policymakers to offer opinions which contrasted with the policy positions of their organisations. While a policy window did open – and close – subsequent governmental commitments to examine the issue of drugs policy in a more deliberative process in the near future highlight the incremental nature of policy change.

Originality/value

This study provides unique insight into the opinions of policymakers in the midst of a prolonged period of policy evolution. A latent aspiration for historical policy change was situated within the realpolitik of more traditional approaches to policy development, demonstrating that the alignment of Kingdon’s (2014) problem, policy and political streams are essential for change in cannabis policy.

Details

Drugs and Alcohol Today, vol. 22 no. 1
Type: Research Article
ISSN: 1745-9265

Keywords

Open Access
Article
Publication date: 19 April 2024

Robert Wagenaar

Key to transnational higher education (HE) cooperation is building trust to allow for seamless recognition of studies. Building on the Tuning Educational Structures initiative…

Abstract

Purpose

Key to transnational higher education (HE) cooperation is building trust to allow for seamless recognition of studies. Building on the Tuning Educational Structures initiative (2001) and lessons learnt from the Organisation for Economic Cooperation and Development (OECD)-Assessment of Learning Outcomes in Higher Education (AHELO) feasibility study, this paper offers a sophisticated approach developed by the European Union (EU)-co-financed project Measuring and Comparing Achievements of Learning Outcomes in Europe (CALOHEE). These evidence the quality and relevance of learning by applying transparent and reliable indicators at the overarching and disciplinary levels. The model results allow for transnational diagnostic assessments to identify the strength and weaknesses of degree programmes.

Design/methodology/approach

The materials presented have been developed from 2016 to 2023, applying a bottom-up approach involving approximately 150 academics from 20+ European countries, reflecting the full spectrum of academic fields. Based on intensive face-to-face debate and consultation of stakeholders and anchored in academic literature and wide experience.

Findings

As a result, general (overarching) state-of-the-art reference frameworks have been prepared for the associated degree, bachelor, master and doctorate, as well as aligned qualifications reference frameworks and more detailed learning outcomes/assessment frameworks for 11 subject areas, offering a sound basis for quality assurance. As a follow-up, actual assessment formats for five academic fields have been developed to allow for measuring the actual level of learning at the institutional level from a comparative perspective.

Originality/value

Frameworks as well as assessment models and items are highly innovative, content-wise as in the strategy of development, involving renown academics finding common ground. Its value is not limited to Europe but has global significance. The model developed, is also relevant for micro-credentials in defining levels of mastery.

Details

Journal of International Cooperation in Education, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2755-029X

Keywords

Open Access
Article
Publication date: 5 February 2018

Bothaina A. Al-Sheeb, Mahmoud Samir Abdulwahed and Abdel Magid Hamouda

This study intends to add to the existing body of literature on the impact of a newly implemented first year seminar in the College of Law and Business. The purpose of this paper…

12586

Abstract

Purpose

This study intends to add to the existing body of literature on the impact of a newly implemented first year seminar in the College of Law and Business. The purpose of this paper is to evaluate the effects the course have on students in regard to three aspects: student awareness and utilization of resources, interaction patterns, as well as, general interests and attitudes toward higher education.

Design/methodology/approach

The methodology of the assessment included analysis of a survey that has been conducted by the end of Spring 2014 semester. A quasi-experimental design was implemented to measure the impact of the intervention on students’ awareness and utilization of resources, interactions, general interests, and attitudes toward higher education. Through the SPSS application, the Mann Whitney U Test, and χ2 tests were used to check for significant differences while comparing the means or frequencies for both groups. For the three questions, the authors have used the 90 percent confidence level and the standard significance level p-value of 0.05 or less for statistical analysis.

Findings

The results indicated that the course had a highly significant positive impact on student attitudes and awareness of campus resources but had less significant impact on student interactions and utilization of resources. The results in this study reveal a positive impact for the first-year seminar course on student satisfaction and attitudes toward higher education as well as their awareness of campus resources. However, in terms of the course impact on student interaction, results conveyed that students who have participated in the first-year seminar course show a slightly better interaction rate with instructors, academic advisors, and close friends than those in the control group.

Research limitations/implications

The main limitation of this study was that the sample was small. Nonetheless, it has provided valuable insights into the understanding of the social and academic impact of first-year seminars on student engagement; through the use of comparison groups, this study increased the validity of prior research.

Practical implications

The first-year seminar course evaluated in this study demonstrated the potential to support and enhance student social and academic engagement during the first year of college. Based on the results in this study, the study team recommended some revisions to the current first-year seminar model (UNIV P100 Skills for University Success). The team proposed three models for subsequent first-year seminars at this university.

Originality/value

This study adds to the existing literature by examining the impact of a newly implemented first-year seminar course at the College of Law and Business at this university on both academic and non-academic aspects from the students’ perspective. These aspects were selected as retention and GPA effects have been widely explored; therefore, the focus is on the less studied emotional and social factors associated with student success and retention. The results from this study can act as a guide for universities intending to introduce a first-year seminar course as it gives clear guidelines on design, content, and course implementation, which can be useful in enhancing general student motivation and attitudes toward academic study and higher education in general.

Details

Journal of Applied Research in Higher Education, vol. 10 no. 1
Type: Research Article
ISSN: 2050-7003

Keywords

Open Access
Book part
Publication date: 7 September 2023

Ellen Ernst Kossek, Brenda A. Lautsch, Matthew B. Perrigino, Jeffrey H. Greenhaus and Tarani J. Merriweather

Work-life flexibility policies (e.g., flextime, telework, part-time, right-to-disconnect, and leaves) are increasingly important to employers as productivity and well-being…

Abstract

Work-life flexibility policies (e.g., flextime, telework, part-time, right-to-disconnect, and leaves) are increasingly important to employers as productivity and well-being strategies. However, policies have not lived up to their potential. In this chapter, the authors argue for increased research attention to implementation and work-life intersectionality considerations influencing effectiveness. Drawing on a typology that conceptualizes flexibility policies as offering employees control across five dimensions of the work role boundary (temporal, spatial, size, permeability, and continuity), the authors develop a model identifying the multilevel moderators and mechanisms of boundary control shaping relationships between using flexibility and work and home performance. Next, the authors review this model with an intersectional lens. The authors direct scholars’ attention to growing workforce diversity and increased variation in flexibility policy experiences, particularly for individuals with higher work-life intersectionality, which is defined as having multiple intersecting identities (e.g., gender, caregiving, and race), that are stigmatized, and link to having less access to and/or benefits from societal resources to support managing the work-life interface in a social context. Such an intersectional focus would address the important need to shift work-life and flexibility research from variable to person-centered approaches. The authors identify six research considerations on work-life intersectionality in order to illuminate how traditionally assumed work-life relationships need to be revisited to address growing variation in: access, needs, and preferences for work-life flexibility; work and nonwork experiences; and benefits from using flexibility policies. The authors hope that this chapter will spur a conversation on how the work-life interface and flexibility policy processes and outcomes may increasingly differ for individuals with higher work-life intersectionality compared to those with lower work-life intersectionality in the context of organizational and social systems that may perpetuate growing work-life and job inequality.

Details

Research in Personnel and Human Resources Management
Type: Book
ISBN: 978-1-83753-389-3

Keywords

Open Access
Book part
Publication date: 2 October 2023

Federica Sacco and Giovanna Magnani

In recent years, both academics and institutions have acknowledged the crucial role multinational enterprises (MNEs) can play in addressing the sustainability challenges, as…

Abstract

In recent years, both academics and institutions have acknowledged the crucial role multinational enterprises (MNEs) can play in addressing the sustainability challenges, as formalized by the sustainable development goals (SDGs). Nevertheless, because of their extensiveness and their design as country-level targets, SDGs have proven challenging to operationalize at a firm level. This problem opens new and relevant avenues for research in international business (IB). This chapter attempts to frame the topic of extended value chain sustainability in the IB literature. In particular, it addresses a specific topic, that is, how sustainability and resilience-building practices interact in global value chains (GVCs). To do so, the present study develops the case of STMicroelectronics (ST), one of the biggest semiconductor companies worldwide.

Details

Creating a Sustainable Competitive Position: Ethical Challenges for International Firms
Type: Book
ISBN: 978-1-80455-252-0

Keywords

Open Access
Article
Publication date: 12 November 2020

Jyotdeep Singh, Parnika Tyagi, Girish Kumar and Saurabh Agrawal

The objective of the study is to develop a methodology to strategically rank store locations using criteria such as population, store site characteristics, economic…

2895

Abstract

Purpose

The objective of the study is to develop a methodology to strategically rank store locations using criteria such as population, store site characteristics, economic considerations, competition and so on to select the most optimal retail convenience store location.

Design/methodology/approach

A case of National Capital Region, India, for a 24-h convenience store was considered for the study and the major criteria that affect the performance of a convenience store are identified, such as population characteristics, economic criteria, competition, consumer accessibility, store size, total cost, site attractiveness and security. Fuzzy AHP is utilized to find the weightage for each criteria and a combination of fuzzy TOPSIS and grey relational analysis (GRA) is applied to rank the alternative using these criteria weight. Further, results obtained are compared with results from fuzzy TOPSIS and fuzzy VIKOR methods. Sensitivity analysis is also performed for ensuring the robustness of the framework.

Findings

It is observed that outcomes do not change under various settling coefficient values, demonstrating that the methodology is very robust. The developed framework will be quite useful to diverse retailers looking to expand and generate substantial profits.

Research limitations/implications

A large sample size of number of locations encourages generalization of results. Strategic ranking of the selected locations is carried out on a few selected criteria. The study was limited by the designated geographical area.

Originality/value

The study contributes to the few available articles on convenience store selection using combination of fuzzy AHP, fuzzy TOPSIS and GRA for a developing country.

Details

Modern Supply Chain Research and Applications, vol. 2 no. 4
Type: Research Article
ISSN: 2631-3871

Keywords

Open Access
Book part
Publication date: 2 October 2023

Annette Cerne and Ulf Elg

This book chapter takes an institutional perspective on competing logics in global markets concerned with sustainability values and how market actors in the form of buyers and…

Abstract

This book chapter takes an institutional perspective on competing logics in global markets concerned with sustainability values and how market actors in the form of buyers and sellers attempt to solve these conflicting situations. We do this by identifying competing institutional logics in global market contexts aiming for sustainability values, together with techniques for navigating these competing institutional logics in the organizational field studied. As an empirical illustration, we use a case study of buyers and sellers in two different markets where sustainability has come into focus for their market relationships. This viewpoint allows us to better understand how global market actors deal with the competing institutional logics in their market context. We make three contributions with this research: firstly, we identify the institutional logics in global markets towards sustainability; secondly, we demonstrate how global market actors prioritize among the competing logics and their market relationships and thirdly, we outline what this means for the relationship between buyers and sellers in global markets towards sustainability.

Details

Creating a Sustainable Competitive Position: Ethical Challenges for International Firms
Type: Book
ISBN: 978-1-80455-252-0

Keywords

Open Access
Book part
Publication date: 26 January 2023

Katarzyna Czernek-Marszałek, Patrycja Klimas, Patrycja Juszczyk and Dagmara Wójcik

Social relationships play an important role in organizational entrepreneurship. They are crucial to entrepreneurs’ decisions because, despite the bleeding-edge technological

Abstract

Social relationships play an important role in organizational entrepreneurship. They are crucial to entrepreneurs’ decisions because, despite the bleeding-edge technological advancements observed nowadays, entrepreneurs as human beings will always strive to be social. During the COVID-19 pandemic many companies moved activities into the virtual world and as a result offline Social relationships became rarer, but as it turns out, even more valuable, likewise, the inter-organizational cooperation enabling many companies to survive.

This chapter aims to develop knowledge about entrepreneurs’ SR and their links with inter-organizational cooperation. The results of an integrative systematic literature review show that the concept of Social relationships, although often investigated, lacks a clear definition, conceptualization, and operationalization. This chapter revealed a great diversity of definitions for Social relationships, including different scopes of meaning and levels of analysis. The authors identify 10 building blocks and nine sources of entrepreneurs’ Social relationships. The authors offer an original typology of Social relationships using 12 criteria. Interestingly, with regard to building blocks, besides those frequently considered such as trust, reciprocity and commitment, the authors also point to others more rarely and narrowly discussed, such as gratitude, satisfaction and affection. Similarly, the authors discuss the varied scope of sources, including workplace, family/friendship, past relationships, and ethnic or religious bonds. The findings of this study point to a variety of links between Social relationships and inter-organizational cooperation, including their positive and negative influences on one another. These links appear to be extremely dynamic, bi-directional and highly complex.

Details

Bleeding-Edge Entrepreneurship: Digitalization, Blockchains, Space, the Ocean, and Artificial Intelligence
Type: Book
ISBN: 978-1-80262-036-8

Keywords

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