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1 – 10 of over 5000Roland Ryndzionek, Michal Michna, Filip Kutt, Grzegorz Kostro and Krzysztof Blecharz
The purpose of this paper is to provide an analysis of the performance of a new five-phase doubly fed induction generator (DFIG).
Abstract
Purpose
The purpose of this paper is to provide an analysis of the performance of a new five-phase doubly fed induction generator (DFIG).
Design/methodology/approach
This paper presents the results of a research work related to five-phase DFIG framing, including the development of an analytical model, FEM analysis as well as the results of laboratory tests of the prototype. The proposed behavioral level analytical model is based on the winding function approach. The developed DFIG model was used at the design stage to simulate the generator’s no-load and load state. Then, the results of the FEM analysis were shown and compared with the results of laboratory tests of selected DFIG operating states.
Findings
The paper provides the results of analytical and FEM simulation and measurement tests of the new five-phase dual-feed induction generator. The use of the MATLAB Simscape modeling language allows for easy and quick implementation of the model. Design assumptions and analytical model-based analysis have been verified using FEM analysis and measurements performed on the prototype. The results of the presented research validate the design process as well as show the five-phase winding design advantage over the three-phase solution regarding the control winding power quality.
Research limitations/implications
The main disadvantage of the winding function approach-based model development is the simplification regarding omitting the tangential airgap flux density component. However, this fault only applies to large airgap machines and is insignificant in induction machines. The results of the DFIG analyses were limited to the basic operating states of the generator, i.e. the no-load state, the inductive and resistive load.
Practical implications
The novel DFIG with five phase rotor control winding can operate as a regular three-phase machine in an electric power generation system and allows for improved control winding power quality of the proposed electrical energy generation system. This increase in power quality is due to the rotor control windings inverter-based PWM supply voltage, which operates with a wider per-phase supply voltage range than a three-phase system. This phenomenon was quantified using control winding current harmonic analysis.
Originality/value
The paper provides the results of analytical and FEM simulation and measurement tests of the new five-phase dual-feed induction generator.
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Michele Andreaus, Leonardo Rinaldi, Caterina Pesci and Andrea Girardi
The purpose of this paper is to explore the role of accountability in times of exception. The Italian government's account-giving practices are critically analysed with respect to…
Abstract
Purpose
The purpose of this paper is to explore the role of accountability in times of exception. The Italian government's account-giving practices are critically analysed with respect to the distinct modes in which duties of accountability are discharged for the exceptional measures taken during the early stages of the COVID-19 pandemic outbreak in early 2020.
Design/methodology/approach
This paper draws on an exploratory case study. The case analysis draws primarily on data obtained through publicly available documents and covers the period between January 1 and August 7, 2020.
Findings
The paper reveals that the Italian government employed various accountability styles (rebuttal, dismissal, reactive, proactive and coactive). Each style influenced both how the government justified its conduct and how it sought to form distinctive relationships with social actors.
Originality/value
The paper uses the notion of “styles of accountability” to empirically illustrate how an unprecedented public governance challenge can reveal broader accountability trends. The paper contributes to accountability research by elucidating how governments tackle ambiguity and uncertainty in their systems of public accountability in extraordinary times.
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Abel Yeboah-Ofori and Francisca Afua Opoku-Boateng
Various organizational landscapes have evolved to improve their business processes, increase production speed and reduce the cost of distribution and have integrated their…
Abstract
Purpose
Various organizational landscapes have evolved to improve their business processes, increase production speed and reduce the cost of distribution and have integrated their Internet with small and medium scale enterprises (SMEs) and third-party vendors to improve business growth and increase global market share, including changing organizational requirements and business process collaborations. Benefits include a reduction in the cost of production, online services, online payments, product distribution channels and delivery in a supply chain environment. However, the integration has led to an exponential increase in cybercrimes, with adversaries using various attack methods to penetrate and exploit the organizational network. Thus, identifying the attack vectors in the event of cyberattacks is very important in mitigating cybercrimes effectively and has become inevitable. However, the invincibility nature of cybercrimes makes it challenging to detect and predict the threat probabilities and the cascading impact in an evolving organization landscape leading to malware, ransomware, data theft and denial of service attacks, among others. The paper explores the cybercrime threat landscape, considers the impact of the attacks and identifies mitigating circumstances to improve security controls in an evolving organizational landscape.
Design/methodology/approach
The approach follows two main cybercrime framework design principles that focus on existing attack detection phases and proposes a cybercrime mitigation framework (CCMF) that uses detect, assess, analyze, evaluate and respond phases and subphases to reduce the attack surface. The methods and implementation processes were derived by identifying an organizational goal, attack vectors, threat landscape, identification of attacks and models and validation of framework standards to improve security. The novelty contribution of this paper is threefold: first, the authors explore the existing threat landscapes, various cybercrimes, models and the methods that adversaries are deploying on organizations. Second, the authors propose a threat model required for mitigating the risk factors. Finally, the authors recommend control mechanisms in line with security standards to improve security.
Findings
The results show that cybercrimes can be mitigated using a CCMF to detect, assess, analyze, evaluate and respond to cybercrimes to improve security in an evolving organizational threat landscape.
Research limitations/implications
The paper does not consider the organizational size between large organizations and SMEs. The challenges facing the evolving organizational threat landscape include vulnerabilities brought about by the integrations of various network nodes. Factor influencing these vulnerabilities includes inadequate threat intelligence gathering, a lack of third-party auditing and inadequate control mechanisms leading to various manipulations, exploitations, exfiltration and obfuscations.
Practical implications
Attack methods are applied to a case study for the implementation to evaluate the model based on the design principles. Inadequate cyber threat intelligence (CTI) gathering, inadequate attack modeling and security misconfigurations are some of the key factors leading to practical implications in mitigating cybercrimes.
Social implications
There are no social implications; however, cybercrimes have severe consequences for organizations and third-party vendors that integrate their network systems, leading to legal and reputational damage.
Originality/value
The paper’s originality considers mitigating cybercrimes in an evolving organization landscape that requires strategic, tactical and operational management imperative using the proposed framework phases, including detect, assess, analyze, evaluate and respond phases and subphases to reduce the attack surface, which is currently inadequate.
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Yasin Sahhar, Raymond Loohuis and Jörg Henseler
The purpose of this study is to identify the practices used by service providers to manage the customer service experience (CSE) across multiple phases of the customer journey in…
Abstract
Purpose
The purpose of this study is to identify the practices used by service providers to manage the customer service experience (CSE) across multiple phases of the customer journey in a business-to-business (B2B) setting.
Design/methodology/approach
This study comprises an ethnography that investigates in real time, from a dyadic perspective, and the CSE management practices at two service providers operating in knowledge-intensive service industries over a period of eight months. Analytically, the study concentrates on critical events that occurred in phases of the customer journey that in some way alter CSE, thus making it necessary for service providers to act to keep their customers satisfied.
Findings
The study uncovers four types of service provider practices that vary based on the mode of organization (ad hoc or regular) and the mode of engagement (reactive or proactive) and based on whether they restore or bolster CSE, including the recurrence of these practices in the customer journey. These practices are conveniently presented in a circumplex typology of CSE management across five phases in the customer journey.
Research limitations/implications
This paper advances the research in CSE management throughout the customer journey in the B2B context by showing that CSE management is dynamic, recurrent and multifaceted in the sense that it requires different modes of organization and engagement, notably during interaction with customers, in different phases of the customer journey.
Practical implications
The circumplex typology acts as a tool for service providers, helping them to redesign their CSE management practices in ongoing service and dialogical processes to keep their customers more engaged and satisfied.
Originality/value
This paper is the first to infuse a dyadic stance into the ongoing discussion of CSE management practices in B2B, in which studies to date have deployed only provider or customer perspectives. In proposing a microlevel view, the study identifies service providers' CSE management practices in multiple customer journey phases, especially when the situation becomes critical.
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The purpose of this paper is to examine the hotel growth model including hotel brand, culture and life cycle phases of the Myrtle Beach, South Carolina, the fastest growing…
Abstract
Purpose
The purpose of this paper is to examine the hotel growth model including hotel brand, culture and life cycle phases of the Myrtle Beach, South Carolina, the fastest growing tourism destination in the United States.
Design/methodology/approach
Culture reflecting consuming behaviour of low-context innovators and high-context imitators is measured by the price elasticity of demand (PED). Hotel brand reflecting guests’ hotel class is measured by the income elasticity of demand. Autoregressive distributed lag has been conducted on the Smith Travel Research data in 33 years (1989–2022) to determine the relationship among hotel brand, culture and life cycles.
Findings
Skilled labour is the key to make hotels grow. Therefore, increase room rates when hotels possess skilled professionals and decrease room rates when hotels have no skilled professionals. During the rejuvenation in Myrtle Beach (1999–2003), hoteliers increased room rates for innovators due to skilled professionals to increase revenue. Otherwise, a decrease in room rates due to lack of skilled professionals would lead to increase revenue.
Research limitations/implications
(1) Although Myrtle Beach is one of the fastest growing tourism destinations in the US, it has a relatively small geographic area relative to the country. (2) Data cover over one tourist life cycle, so the time span is relatively short. Hoteliers can forecast the number of guests in different culture by changing room rates.
Practical implications
To optimize revenue, hoteliers can select skilled labour in professional design hotel brands which could make an increase in demand for leisure transient guests no matter what room rates increase after COVID-19 pandemic.
Social implications
The study has considered the applied ethical processes regarding revenue management that would maximize both revenue and customer satisfaction when it set up an increase in room rates to compensate for professional hotel room design or it decreases room rates for low-income imitators in exploration and development.
Originality/value
This research highlights that (1) skilled design in the luxury hotel brand is the key for the hotel growth and (2) there is a steady state of the growth model in the destination life cycle.
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Henk J. Doeleman, Desirée H. van Dun and Celeste P.M. Wilderom
Implementing a new organizational strategy effectively nowadays is said to require open strategizing practices. The purpose of this paper is to examine the adoption of three…
Abstract
Purpose
Implementing a new organizational strategy effectively nowadays is said to require open strategizing practices. The purpose of this paper is to examine the adoption of three intertwined open strategizing practices in conjunction with a transformational leadership style towards effective strategy implementation.
Design/methodology/approach
The study was conducted within 37 geographically dispersed locations of a Dutch governmental organization. The top managers and senior managers were surveyed at two points in time (n T1 = 548; n T2 = 414) and group interviewed at T2. Exploratory factor and linear regression analyses were performed. The qualitative data pertaining to the specific way in which leaders can impact the relationship between open strategizing practices and strategy implementation was analyzed using the Gioia methodology.
Findings
As hypothesized, transformational leadership moderates the positive relationship between open strategizing practices and effective strategy implementation. This moderating effect was corroborated through the interview data in which the managers stressed the need for “intrinsically motivated” and “empowering” leaders to effectively support the adoption of their own locally-developed location strategy, as part of the overall strategy.
Research limitations/implications
Despite the timely focus on the three intertwined open strategizing practices, the findings are only based on the perceptions of the various top and senior managers employed by one Western public sector organization.
Practical implications
Top and senior managers who need to improve their organization's strategy implementation can apply the here tested three open strategizing practices. They should also be aware of the key role of transformational leadership.
Originality/value
The authors contribute to the “open” strategy-as-practice domain by showing how top and senior managers' transformational leadership style supports the beneficial effects of adopting the three practices.
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Elham Rostami, Fredrik Karlsson and Ella Kolkowska
The purpose of this paper is to survey existing information security policy (ISP) management research to scrutinise the extent to which manual and computerised support has been…
Abstract
Purpose
The purpose of this paper is to survey existing information security policy (ISP) management research to scrutinise the extent to which manual and computerised support has been suggested, and the way in which the suggested support has been brought about.
Design/methodology/approach
The results are based on a literature review of ISP management research published between 1990 and 2017.
Findings
Existing research has focused mostly on manual support for managing ISPs. Very few papers have considered computerised support. The entire complexity of the ISP management process has received little attention. Existing research has not focused much on the interaction between the different ISP management phases. Few research methods have been used extensively and intervention-oriented research is rare.
Research limitations/implications
Future research should to a larger extent address the interaction between the ISP management phases, apply more intervention research to develop computerised support for ISP management, investigate to what extent computerised support can enhance integration of ISP management phases and reduce the complexity of such a management process.
Practical implications
The limited focus on computerised support for ISP management affects the kind of advice and artefacts the research community can offer to practitioners.
Originality/value
Today, there are no literature reviews on to what extent computerised support the ISP management process. Findings on how the complexity of ISP management has been addressed and the research methods used extend beyond the existing knowledge base, allowing for a critical discussion of existing research and future research needs.
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Teresa Villacé-Molinero, Laura Fuentes-Moraleda, Alicia Orea-Giner, Rocío González-Sánchez and Ana Muñoz-Mazón
This study aims to investigate how university students experience a skill transformation process aligned with the sustainable development goals (SDGs). This transformation occurs…
Abstract
Purpose
This study aims to investigate how university students experience a skill transformation process aligned with the sustainable development goals (SDGs). This transformation occurs through their participation in a service-learning programme alongside an international volunteering project. The theoretical framework for understanding this skill transformation process is based on the “rite of passage”.
Design/methodology/approach
Qualitative methodology is adopted by conducting 23 online surveys with volunteers (virtual and onsite) and five with coordinators across the rite of passage phases. Volunteering was carried out in five Mayan indigenous communities in Mexico as part of an international cooperation project with the goals of supporting community-based tourism development and strengthening volunteers’ skills in accordance with the SDGs.
Findings
Results show that international volunteering programmes for university students significantly enhance their interpersonal and professional skills, demonstrating strong potential for implementing the SDGs. These programmes provide learning and education opportunities for both volunteers and local communities. Volunteers gain a broader perspective on gender equality and cultural barriers. Additionally, volunteering supports sustainable tourism, economic worth and collaboration among institutions. Both volunteers’ personal characteristics (educational level and sociocultural context), as well as their sociocultural context, influenced the perception of the skill transformation process and learning about the SDGs. Finally, a new educational university programme in volunteering aligned with SDGs is proposed.
Practical implications
This research examines the practical ramifications of incorporating volunteer programmes into university courses. Universities must include these initiatives in their educational systems as a means of enhancing student learning.
Social implications
A new educational university programme in volunteering aligned with SDGs is proposed. This study suggests a shift in university mindset, as well as increased funding for training and adherence to the SDGs.
Originality/value
This study pioneers the rite of passage framework in an international volunteer tourism project facilitated by universities, emphasizing volunteering as a valuable tool for SDG implementation, considering the interrelationships between objectives.
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This study aims to investigate whether Bangladesh would avoid the middle-income trap (MIT) in its transition to a high-income country (HIC) according to its “Vision 2041”.
Abstract
Purpose
This study aims to investigate whether Bangladesh would avoid the middle-income trap (MIT) in its transition to a high-income country (HIC) according to its “Vision 2041”.
Design/methodology/approach
Using both actual and forecasted secondary data, three MIT models of different approaches were used to evaluate the government’s vision-based projections. Moreover, crucial indicators of deindustrialization and institutional strength were linked to the investigation of potential transitions.
Findings
According to the absolute definition and international forecasts, the Bangladesh economy might not fall into an MIT at its lower-middle-income level within the intended period due to being shorter than the defined limit. However, its real GDP per capita relative to the USA would remain far below the defined threshold limit of an upper-middle-income country (UMC) in 2041. Meanwhile, Bangladesh has reached the third of the five gradual phases and is awaiting a new transition in 2029. However, its vision-based plan would face challenges such as skills gaps, institutional reforms and successive global crises.
Practical implications
Bangladesh might be trapped in MIT at the UMC level in the 2030s, with no path to renovate after the demographic dividend ends in 2047. In this regard, the government must demonstrate a strong political will to ensure the effectiveness of its policies and the viability of its institutions.
Originality/value
This study not only compared projections to forecasts using different MIT models but also connected transition phases to industrial policies and institutional strengths.
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