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1 – 10 of over 3000
Article
Publication date: 26 October 2018

Istvan Jankovics and Utku Kale

The main purpose of this study is to introduce the pilots’ load model and developed concept of load measuring system for operator load management.

Abstract

Purpose

The main purpose of this study is to introduce the pilots’ load model and developed concept of load measuring system for operator load management.

Design/methodology/approach

In future aeronautical system, the role of operators (pilots and air traffic controllers [ATCOs]) will be in transition from active controlling to passive monitoring. Therefore, the operators’ load (task, information, work and mental) model was developed. There were developed measuring systems integrating into the pilot and ATCOs working environment eye tracking system outside measuring equipment. Operator load management was created by using the measurement.

Findings

In future system depending on time and automation level, the role of information and mental load will be increased. In flight simulator practice, developed load management method serves as a good tool for improving the quality of pilot training. According to the test results, the load monitoring and management system increase the safety of operators’ action in an emergency situation.

Research limitations/implications

The developed method were tested in two flight simulators (one developed for scientific investigation and other one applied for pilot training) and ATM management laboratory.

Practical implications

By deployment of the develop load monitoring and management system, the safety of aircraft flights and air transport management will be increased, especially in an emergency situation.

Social implications

People and society’s acceptance of future highly automated system will be increased.

Originality value

The analysis focuses on the following: developing operator’s load model as improved situation awareness model of Endsley, developing monitoring system integrated into operator’s working environment, creating load management system.

Details

Aircraft Engineering and Aerospace Technology, vol. 91 no. 2
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 6 September 2022

Utku Kale, Omar Alharasees, Jozsef Rohacs and Daniel Rohacs

The purpose of this paper is to investigate and evaluate the subjective decision-making of pilots during final approach with varying degrees of experience for landing and…

Abstract

Purpose

The purpose of this paper is to investigate and evaluate the subjective decision-making of pilots during final approach with varying degrees of experience for landing and go-around.

Design/methodology/approach

In this research, the “Lorenz Attractor” was modified and used to model the subjective decision-making of pilots during the final approach. For landing and go-around situations, “hesitation frequency” and “decision-making time” were calculated for the subjective decision-making of pilots.

Findings

In this research, the modified Chaotic Lorenz Model was used on MATLAB with varying degrees of experience, namely, student pilots, less-skilled pilots, experienced pilots and well-experienced pilots. Based on the outcomes, the less-skilled pilot needs nearly four times more decision-making time on landing or go-around compared to the well-experienced pilot during the final approach.

Practical implications

Operators (pilots, air traffic controllers) need to make critical and timely decisions in a highly complex work environment, which is influenced by several external elements such as experience level and human factors. According to NASA, 80% of aviation accidents occur due to human errors specifically over the course of the aviation decision-making process in dynamic circumstances. Due to the consequences of this research the operators' training should be redesigned by assisting flight instructors on the weaknesses of pilots.

Originality/value

This research explores the endogenous dynamics of the pilot decision-making process by applying a novel “Chaotic Lorenz Model” on MATLAB. In addition, the operator's total decision time formula was improved by including the decision reviewing time and external factors. Moreover, subjective decision-making model created by the current authors and Wicken's information model were modified to the highly automated systems.

Details

Aircraft Engineering and Aerospace Technology, vol. 95 no. 3
Type: Research Article
ISSN: 1748-8842

Keywords

Article
Publication date: 13 December 2017

Philip Long, Christine Chevallereau, Damien Chablat and Alexis Girin

The installation of industrial robots requires security barriers, a costly, time-consuming exercise. Collaborative robots may offer a solution; however, these systems only comply…

Abstract

Purpose

The installation of industrial robots requires security barriers, a costly, time-consuming exercise. Collaborative robots may offer a solution; however, these systems only comply with safety standards if operating at reduced speeds. The purpose of this paper is to describe the development and implementation of a novel security system that allows human–robot coexistence while permitting the robot to execute much of its task at nominal speed.

Design/methodology/approach

The security system is defined by three modes: a nominal mode, a coexistence mode and a gravity compensation mode. Mode transition is triggered by three lasers, two of which are mechanically linked to the robot. These scanners create a dynamic envelope around the robot and allow the detection of operator presence or environmental changes. To avoid velocity discontinuities between transitions, the authors propose a novel time scaling method.

Findings

The paper describes the system’s mechanical, software and control architecture. The system is demonstrated experimentally on a collaborative robot and is compared with the performance of a state-of-art security system. Both a qualitative and quantitative analysis of the new system is carried out.

Practical implications

The mode transition method is easily implemented, requires little computing power and leaves the trajectories unchanged. As velocity discontinuities are avoided, motor wear is reduced. The execution time is substantially less than a commercial alternative. These advantages can lead to economic benefits in high-volume manufacturing environments.

Originality/value

This paper proposes a novel system that is based on industrial material but can generate dynamic safety zones for a collaborative robot.

Details

Industrial Robot: An International Journal, vol. 45 no. 2
Type: Research Article
ISSN: 0143-991X

Keywords

Article
Publication date: 18 February 2019

Tiffany Cheng Han Leung

The purpose of this paper is to examine how responsible gambling policies are communicated and presented as a legitimation strategy to different stakeholders.

1012

Abstract

Purpose

The purpose of this paper is to examine how responsible gambling policies are communicated and presented as a legitimation strategy to different stakeholders.

Design/methodology/approach

This study is based primarily on 49 semi-structured interviews with internal and external stakeholders of Macao’s gambling industry in 2011. This study draws on Reast et al.’s (2012) legitimacy-seeking strategy framework.

Findings

The findings indicate that these organisations use construing and earning legitimacy strategies to ensure passive support and acquiescence from certain stakeholder groups, and they deploy bargaining and capturing legitimacy strategies to generate active support for this morally contested industry. As a means of attaining long-standing legitimacy in the industry, gambling operators engage symbolically rather than substantively in responsible gambling to minimise the legitimacy gap.

Research limitations/implications

The findings of the study pertain to a unique setting and might not be suitable for generalisation.

Practical implications

In the absence of stringent legal mechanisms and strong external stakeholder pressure, the 12th Five-Year Plan of the People’s Republic of China aims to transform Macao into a “World Centre of Tourism and Leisure”, and gambling companies may soon face much stronger pressures from the Chinese Government and the Macao Government.

Social/implications

Voluntary responsible gambling initiatives are liable to be used only in symbolic fashion, without offering genuine engagement or full commitment to the most vulnerable stakeholder group.

Originality/value

This study contributes to the literature on social and accounting literature by providing an in-depth case study of how organisations in the gambling industry use different communication strategies to shape and respond to controversial issues.

Details

Sustainability Accounting, Management and Policy Journal, vol. 10 no. 1
Type: Research Article
ISSN: 2040-8021

Keywords

Article
Publication date: 20 June 2012

Enrico Calandro and Mpho Moyo

This paper seeks to identify policy and regulatory bottlenecks that need to be overcome in order to stimulate private sector investment in backbone networks in selected African

1061

Abstract

Purpose

This paper seeks to identify policy and regulatory bottlenecks that need to be overcome in order to stimulate private sector investment in backbone networks in selected African countries (Côte d'Ivoire, Ethiopia, Kenya, South Africa and Uganda).

Design/methodology/approach

It does so by exploring policy and regulatory frameworks and market structures that influence investment decisions on backbone infrastructure roll‐out; it investigates models and strategies adopted by the public sector to finance national backbone infrastructure; and it provides recommendations on how to stimulate private investment in backbone roll‐out by creating an enabling policy and regulatory environment.

Findings

Research findings show that the telecommunications sector in the selected African countries has witnessed the return of state‐led investment in the roll‐out of fibre backbones. The rationale for state‐led intervention has often been cited as market failure regarding investment in broadband backbone roll‐out. However, many of the policy and regulatory barriers to market entry remain, including protectionist legislation, which has limited private sector participation in investing in backbone.

Practical implications

The reality is that African governments are maintaining control over national backbones and, in some markets where the telecommunications infrastructure sector has been liberalised, the state‐owned operators may enter into direct competition with the private sector or may delay delivery by the private sector.

Originality/value

The value of the paper is that it provides evidence on how to improve the roll‐out and extension of national broadband backbone networks through the development of a policy and regulatory framework which facilitates private sector investment in this sector. The paper also makes recommendations to governments for the facilitation of private investment in backbone networks through the development of an enabling policy and regulatory environment.

Article
Publication date: 1 February 2008

Bente M. Flygansvær, Lars‐Erik Gadde and Sven A. Haugland

The purpose of this paper is to address the prerequisites for achieving coordinated action in reverse distribution systems. It is an underlying assumption in distribution…

2499

Abstract

Purpose

The purpose of this paper is to address the prerequisites for achieving coordinated action in reverse distribution systems. It is an underlying assumption in distribution, logistics and supply chain management that a higher level of coordination between the actors is superior to a lower, and a higher levels of coordination will in turn lead to increased performance. Coordination requires the actors to implement efficient coordination mechanisms. The separate distribution flows need to be coordinated individually with appropriate coordination mechanisms. Furthermore, actors need to pay close attention to how different coordination mechanisms co‐exist in order to achieve a higher level of coordinated action and superior system performance.

Design/methodology/approach

The paper is based on a comparative case study of reverse distribution systems for electrical and electronic products in Norway.

Findings

The empirical results indicate that lack of coordination across flows increases costs and reduces the service level, and a low level of coordinated action is achieved. In contrast, it is also found that well functioning coordination mechanisms across flows decrease costs and increase the level of service, indicating that coordinated action is achieved. It is also found that end‐user characteristics are driving forces leading to different types of reverse distribution systems.

Originality/value

The paper builds an important bridge between separate flows in distribution systems, and addresses a void in distribution research.

Details

International Journal of Physical Distribution & Logistics Management, vol. 38 no. 1
Type: Research Article
ISSN: 0960-0035

Keywords

Open Access
Article
Publication date: 31 May 2024

Priya Malhotra

Passive investing has established itself as the dominant force in the world of professionally managed assets, surpassing the concept of index funds. Its meteoric rise is fueled…

1292

Abstract

Purpose

Passive investing has established itself as the dominant force in the world of professionally managed assets, surpassing the concept of index funds. Its meteoric rise is fueled by investors’ preference for its dual benefits of strong diversification and low cost. A comprehensive study of the economic model, addressed areas and market structure has not yet been conducted, despite the existence of numerous studies on more specific topics. To address this gap, this paper examines 943 articles on passive investing published between 1998 and 2022 in SCOPUS and Web of Science.

Design/methodology/approach

The study utilizes the most pertinent tools for conducting a systematic review by the PRISMA framework. This article is the result of SLR and extensive bibliometric analysis. Contextualized systematic literature review is used to screen and select bibliographic data, which is then subjected to a variety of bibliometric analyses. The study provides a bibliometric overview of works on passive investment research that are indexed in Scopus and Web of Science. Bibliometrix, VoS Viewer and Cite Space are the tools used to conduct content and network analysis, to ascertain the present state of research, as well as its focus and direction.

Findings

Our exhaustive analysis yields important findings. One, the previous decade has witnessed a substantial increase in the number of publications and citations; in particular, the inter-disciplinary and international scope of related research has expanded; Second, the top three clusters on “active versus passive funds,” “price discovery and market structures” and “exchange-traded funds (ETFs) as an alternative” account for more than fifty percent of the domain’s knowledge; Third, “Leveraged ETFs (LETFs)” and “environmental, social and governance (ESG)” are the two emerging themes in the passive investing research. Fourth, despite its many benefits, passive investing is not suitable for everyone. To get the most out of what passive investing has to offer, investors, intermediaries and regulators must all exercise sufficient caution. Our study makes a substantial contribution to the field by conducting a comprehensive bibliometric analysis of the existing literature, highlighting key findings and implications, as well as future research directions.

Research limitations/implications

While the study contributes significantly to the field of knowledge, it has several limitations that must be considered when interpreting its findings and implications. With our emphasis on academic journals, the study analyzed only peer-reviewed journal articles, excluding conference papers, reports and technical articles. While we are confident that our approach resulted in a comprehensive and representative database, our reliance on Elsevier Scopus and Web of Science may have resulted in us overlooking relevant work accessible only through other databases. Additionally, specific bibliometric properties may not be time-stable, and certain common distribution patterns of the passive investing literature may still be developing.

Practical implications

With this study, it has been possible to observe and chart the high growth trajectory of passive investing research globally, especially post-US subprime crisis. Despite the widespread adoption of passive investing as an investment strategy, it is not a one-size-fits-all proposition. Market conditions change constantly, and it frequently requires an informed eye to determine when and how much to shift away from active investments and toward passive ones. Currency ETFs enable investors to implement a carry trade strategy in their portfolios; however, as a word of caution, currency stability and liquidity can play a significant role in international ETFs. Similarly, LETFs may be better suited for dynamic strategies and offer less value to a long-term investor. Lastly, the importance of investor education cannot be underestimated in the name of the highly diversified portfolio when using passive alternatives, for which necessary efforts are required by regulators and investors alike.

Social implications

The inexorable trend to passive investing creates numerous issues for fund management, including fee and revenue pressure, which forces traditional managers to seek new revenue streams, such as illiquid and private assets, which also implies increased portfolio risk. Additionally, the increased transparency and efficiency associated with the ETF market indicates that managers must rethink the entire value chain, beginning with technology and the way investments interact. Passive investments have triggered changes in market structure that are still not fully understood or factored in. Active management and a range of valuation opinions on whether a price is “too low” or “too high” provide much-needed depth to a market as it attempts to strike a delicate balance between demand and supply forces, ensuring liquidity at all price points.

Originality/value

I hereby certify that I am the sole author of this paper and that no part of this manuscript has been published or submitted for publication.

Details

Journal of Capital Markets Studies, vol. 8 no. 1
Type: Research Article
ISSN: 2514-4774

Keywords

Article
Publication date: 24 May 2013

Gisela Bichler, Karin Schmerler and Janet Enriquez

This paper aims to evaluate a problem‐oriented policing project that used regulatory policy to foster responsible place management among operators of nuisance motels located in…

Abstract

Purpose

This paper aims to evaluate a problem‐oriented policing project that used regulatory policy to foster responsible place management among operators of nuisance motels located in Southern California.

Design/methodology/approach

A mixed‐methodological approach was used to ensure that a comprehensive assessment captured substantive outcomes, as well as implementation issues and displacement effects.

Findings

Each component of the initiative generated some success, with the greatest crime reduction achieved when all motels were in full compliance with the permit‐to‐operate ordinance. Consistency in key project staff was critical to maintaining program integrity.

Research limitations/implications

The displacement analysis suggests that crime prevention evaluations would benefit from a facilities orientation that identifies locations that might host crime if the targeted sites are rendered inopportune. And, net effects can be applied to facilities research using standardized crime rates.

Practical implications

Ends‐based regulatory policy offers law enforcement an alternative to conventional crime control strategies. Responsibility for crime prevention can be shifted to place managers to reduce the incidents of crime and disorder (reported and unreported to police). Ancillary benefits include better city‐industry communication and more efficient use of city resources.

Originality/value

This research is valuable to police agencies considering the use of ordinances to address crime and disorder problems plaguing risky facilities.

Details

Policing: An International Journal of Police Strategies & Management, vol. 36 no. 2
Type: Research Article
ISSN: 1363-951X

Keywords

Article
Publication date: 6 May 2014

Laura Lucia-Palacios, Victoria Bordonaba-Juste, Melih Madanoglu and Ilan Alon

The purpose of this paper is to demonstrate how signaling support services and contractual arrangements that create value for incumbent franchisees can help to create value for…

2622

Abstract

Purpose

The purpose of this paper is to demonstrate how signaling support services and contractual arrangements that create value for incumbent franchisees can help to create value for the whole network by attracting prospective franchisees.

Design/methodology/approach

Using data from Bond's Franchising Report the study analyses franchisors operating between 1994 and 2008 via a Generalized Method of Moments (GMM) model for an unbalanced panel of 2,474 franchisors.

Findings

Training, financial assistance, sub-franchising and restrictions against passive ownership, and the use of area development agreements are found to be valuable for prospective franchisees. Experience and the number of company-owned and franchised units also attract prospective franchisees.

Research limitations/implications

Our findings imply that not all value-creating services and contractual arrangements are interpreted in the same way by prospective franchisees. Franchisors should offer training and financial assistance to new franchisees in the early stages of a franchise. They should also allow sub-franchising but restrict passive ownership and offer the possibility for area development agreements as contractual arrangements to appeal to new franchisees. Franchisors should focus not only on expansion, but should view the chain in a holistic manner by sustaining and growing both franchised and company-owned units.

Originality/value

The findings contribute to the franchising literature by providing new evidence on how offering and signaling some contractual arrangements and support services can help franchisors create value for incumbent franchisees and can attract new franchisees. Our research shows that value in franchising is created differently depending on whether the franchisees are incumbent or prospective.

Details

Journal of Services Marketing, vol. 28 no. 2
Type: Research Article
ISSN: 0887-6045

Keywords

Article
Publication date: 1 October 2006

Wolday Amha and Gebrehiwot Ageba

With the objective of trying to understand and assess the status of delivering business development services (BDS) and identifying the constraints, the Ethiopian Development…

3373

Abstract

Purpose

With the objective of trying to understand and assess the status of delivering business development services (BDS) and identifying the constraints, the Ethiopian Development Research Institute conducted a survey of randomly selected 974 MSEs (551 micro and 423 small enterprise operators) in 2003.

Design/methodology/approach

Random, anonymous survey of MSE operators in BDS in Ethiopia.

Findings

The results of the survey indicated that there were very limited BDS providers in the sector, which delivered limited services to few MSE operators (very low outreach). MSE operators had very limited vocational and technical training (before starting business), received few short‐term training, extension and counselling, and marketing services. The most important constraints were mainly related to access to markets and finance. Networks or associations in the MSE sector were not used as useful instruments to promote joint marketing. The results of the survey reveal that there is not significant difference based on size (micro and small) and gender in accessing BDS in the MSE sector. Addressing the constraints of delivering BDS requires clarity regarding the roles of facilitator and providers and the use of subsidies during the transition phase. The interventions should focus on delivering BDS on sustainable basis by responding to the needs in the market and providing incentives to the BDS providers, particularly the private sector.

Originality/value

Very few systematic studies of this nature have been carried out in developing countries. The paper offers clear implications for policymakers involved in economic development and poverty reduction.

Details

International Journal of Emerging Markets, vol. 1 no. 4
Type: Research Article
ISSN: 1746-8809

Keywords

1 – 10 of over 3000