Design and topological optimization of rear pressure bulkhead for a typical aircraft

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Marshal Thakran ◽  
Meenakshi ◽  
Jitender Sharma ◽  
Charles Gilbert Martin

Purpose The purpose of this paper is to evaluate the model of a rear pressure bulkhead with different design optimizations to meet the pressurized cabin requirements of an aircraft. Design/methodology/approach This paper presents the results of the static analysis of a dome-shaped rear pressure bulkhead model designed in Catia-v5. Numerical analysis of model meshed in hyper-mesh and solved using Opti-Struct for iterative design optimizations. Findings All the iterative models are analyzed at 9 Psi. Rear pressure bulkhead designed with L-section stringer shows better results than the model optimized with T-section stringer for the same thickness. The model optimized with L-shaped stinger also reduces the weight of the bulkhead without affecting the structural integrity. Practical implications It has been concluded in this paper that the selection of specific shapes of the stringers shows a significant influence on weight reduction. Originality/value This paper provides a topical, technical insight into the design and development of a rear pressure bulkhead. It also outlines the future development of dome-shaped rear pressure bulkhead.

2014 ◽  
Vol 25 (1) ◽  
pp. 21-37 ◽  
Author(s):  
Amira Galin

Purpose – The purpose of this paper is to obtain insight into court-referred mediation in the Israeli Labor Courts, by analyzing its processes and outcomes, as a function of tactics used by both the disputants and the mediator. Design/methodology/approach – Observation of 103 court-referred mediations, for each of which a detailed process and outcome were documented. Data on disputants' refusal to participate in the mediation was also collected. At the end of each mediation case, disputants were given a questionnaire in which they expressed their satisfaction with the outcome and their evaluation of the mediator's contribution. Findings – A low rate of refusal to participate in court-referred mediation was found. Also, the higher the ratio of soft tactics to pressure tactics employed (by all parties involved) during the process, the higher the rate of agreements. Mediators use significantly more soft tactics than disputants, and are more active in using tactics. The two significant variables that predict the mediation's agreement are the ratio between soft tactics to pressure tactics used by all parties, and mediator contribution to the process. Practical implications – The significant role of soft tactics in the process, outcome, and satisfaction of court-referred mediation may serve as a guideline for disputants and mediators. Originality/value – This unique research, which examines the impact of tactics on court-referred mediation, may provide added and significant theoretical insight into its process and outcome, as well as a better understanding of other “hybrid” (compulsory at the beginning, voluntary at the end) mediations.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kent McFadzien ◽  
Lawrence W. Sherman

PurposeThe purpose of this paper is to demonstrate a “maintenance pathway” for ensuring a low false negative rate in closing investigations unlikely to lead to a clearance (detection).Design/methodology/approachA randomised controlled experiment testing solvability factors for non-domestic cases of minor violence.FindingsA random selection of 788 cases, of which 428 would have been screened out, were sent forward for full investigation. The number of cases actually detected was 22. A total of 19 of these were from the 360 recommended for allocation. This represents an improvement of accuracy over the original tests of the model three years earlier.Research limitations/implicationsThis study shows how the safety of an investigative triage tool can be checked on a continuous basis for accuracy in predicting the cases unlikely to be solved if referred for full investigations.Practical implicationsThis safety check pathway means that many more cases can be closed after preliminary investigations, thus saving substantial time for working on cases more likely to yield a detection if sufficient time is put into the cases.Social implicationsMore offenders may be caught and brought to justice by using triage with a safety backstop for accurate forecasting.Originality/valueThis is the first published study of a maintenance pathway based on a random selection of cases that would otherwise not have been investigated. If widely applied, it could yield far greater time for police to pursue high-harm, serious violence.


Kybernetes ◽  
2019 ◽  
Vol 48 (4) ◽  
pp. 672-684 ◽  
Author(s):  
Pille Bunnell

Purpose Rather than an attempt to define or clarify resilience in terms of its characteristics, or its correspondence to reality, this paper is a series of reflections that leads to the notion of resilience as a way of being in the world. What is presented is not intended to be conclusive in any way. The paper aims to trigger thoughtful reflections that will lead to further conversations about the entailments and ethical concerns implicit in the concept of resilience. Design/methodology/approach The paper comprises reflections based on a selection of published ideas, as well as on personal engagement in the domains of ecology and the biology of cognition. In postulating that resilience may have a central, ineffable quality, the phrase “soul of” has been used as an approach to considering what such a quality may be. This formulation leads to a consideration about the nature of our relationships with the other such that the notion of resilience has become meaningful. Findings Language parses or chunks named ideas in a way that reveals some regularities and obscures others. The word resilience is one such chunk that historically has changed its meaning. Furthermore in the present the word refers to variable aspects or elements depending on the context of its usage. In the ecological context, resilience entails an ambiguous balance between persistence and change, and indeed this ambiguity may be necessary to accommodate the complexities. In all cases the author has considered, we are only concerned with resilience where there is an ethical dimension and this, inherently, must be multidimensional given the complexities of the systems being regarded. The author claims that the soul of resilience arises through an ethically oriented reflexive awareness of our dynamic flow in a relational embeddedness. Practical implications The practical implications of this paper are elusive, yet meaningful, as the paper attempts to open space for operating in an ethical and useful manner with ambiguous concepts and for avoiding the hubris of certainty. The paper is an explication of one of the ways of thinking inspired by second order science. Originality/value As the reflections in this paper are largely those original to the author, the ideas are original. Whether they have value depends on what ideas, attitudes, orientations and further reflections are triggered and whether these in turn implicitly or explicitly alter actions toward more effective care of our world. If reflection on resilience increases resilience, then this paper will have value.


Author(s):  
Phaik Kin Cheah ◽  
N. Prabha Unnithan ◽  
Suresh Suppiah

PurposeThe purpose of this paper is to investigate the work roles of the Royal Malaysia Police Volunteer Reserve officers.Design/methodology/approachA grounded theory approach was utilized for the generation and analysis of the data. Data were collected through interviews, observations and follow-ups. Semi-structured interviews were conducted with 20 male and female volunteer reserve officers and 5 regular police officers aged between 24 and 58 years of mixed socioeconomic backgrounds, ethnicities and ranking in the Royal Malaysia Police force. Two civilian respondents (spouses of the Police Volunteer Reserve officers) were also interviewed for this study for the purpose of theory sampling.FindingsThe data were analyzed qualitatively resulting in a model of Royal Malaysia Police Volunteer Reserve officer roles consisting of four orientations.Research limitations/implicationsStudy outcomes are discussed theoretically and administratively. The four role orientations identified will assist researchers studying police reserve volunteerism.Practical implicationsStudy outcomes allow administrators to utilize and deploy police reservists in consonance with the four role orientations identified.Social implicationsThis study provides insight into how police reservists conceive of and execute their roles as they negotiate them in relation to the regular police officers they work with and the public from which they are drawn.Originality/valueThis is the first study of police volunteerism in Malaysia.


2019 ◽  
Vol 21 (1) ◽  
pp. 14-26
Author(s):  
Stephanie Hunter ◽  
Eleanor Craig ◽  
Jake Shaw

Purpose Within the current offender personality disorder (OPD) pathway in the UK, black, Asian and minority ethnic (BAME) populations are underrepresented. Fewer BAME offenders are engaging with services despite being proportionately identified for inclusion and referred on to the pathway. The paper aims to discuss this issue. Design/methodology/approach This qualitative study explored the experiences of 11 BAME men engaged in a prison-based OPD service for young offenders to identify the highlights and challenges of engagement within the service and to what extent they experienced a sense of inclusion/belonging. Findings Thematic analysis was used to identify three overarching themes and sub-themes. Why am I going to be an Outcast? describes the barriers to engagement encountered by the participants; and Give it a Try and Nothing but Respect describe the process of overcoming these barriers. Barriers revolved around the experiences of judgement, alienation and hopelessness. These were overcome through peer encouragement, developing relationships with staff and freedom to regulate levels of engagement. Practical implications Practice and policy implications are considered to support similar services in addressing the barriers to engagement faced by BAME individuals. Areas for future research are also recommended. Originality/value Currently, no research has directly explored the under-representation of young BAME offenders with emerging personality disorder in the OPD pathway. The findings provided an insight into some of the difficulties these young BAME offenders faced when accessing this service, alongside aspects which maintained their engagement.


2019 ◽  
Vol 22 (1) ◽  
pp. 9-20
Author(s):  
Sarah Shorrock ◽  
Michelle M. McManus ◽  
Stuart Kirby

Purpose The challenges of transferring the theoretical requirements of an effective multi-agency partnership into everyday practices are often overlooked, particularly within safeguarding practices. Therefore, the purpose of this paper is to explore practitioner perspectives of working within a multi-agency safeguarding hub (MASH) and those factors that encourage or hinder a multi-agency approach to safeguarding vulnerable individuals. Design/methodology/approach Semi-structured interviews with 23 practitioners from one MASH location in the North of England were conducted, with a thematic analysis being used to analyse findings. Findings The interviews with practitioners illustrated the complexity of establishing a multi-agency approach to safeguarding. It was inferred that whilst information sharing and trust between agencies had improved, the absence of a common governance structure, unified management system, formalisation of practices and procedures and shared pool of resources limited the degree to which MASH could be considered a multi-agency approach to safeguarding. Practical implications Establishing a multi-agency approach to safeguarding is complex and does not occur automatically. Rather, the transition to collaborative practices needs to be planned, with agreed practices and processes implemented from the beginning and reviewed regularly. Originality/value Few studies have investigated the implementation of MASH into safeguarding practices, with this paper providing a unique insight into practitioner opinions regarding the transition to multi-agency practices. Whilst there is a focus on MASH, the challenges to arise from the research may be reflective of other multi-agency partnerships, providing a foundation for best practice to emerge.


2019 ◽  
Vol 11 (4) ◽  
pp. 895-916
Author(s):  
Aishath Muneeza ◽  
Zakariya Mustapha ◽  
Fathimath Nashwa Badeeu ◽  
Aminath Reesha Nafiz

Purpose The purpose of this paper is to formulate ways in which Maldives could pioneer Islamic tourism on a befitting framework and financing structure as a leverage to develop its tourism industry. Design/methodology/approach The research uses qualitative approach whereby primary and empirical data on tourism practices as well as relevant laws and guidelines, issued in Maldives and in other Muslim jurisdictions of the Muslim, are analyzed. Doctrinal approach is used in analyzing secondary data on the subject. Findings The research reveals the potential of Islamic tourism in Maldives as well as the challenges that have constrained its development in the country. Certainty is needed in halal products, services and conducts. Codifying extant Maldives Halal Tourism Standards will establish legal framework for a standard Shariah-compliant tourism industry. Islamic financing structure enables mobilizing required funds and address financing constraints. Practical implications This research presents an insight into establishing and developing Islamic tourism industry in the Maldives. Harmonizing tourism regulations with Shariah shall bring about the required consciousness on Shariah compliance in target tourists and their desires. Private individuals can contribute in mobilizing the much needed Shariah-compliant resources to finance Islamic model resorts befitting an Islamic tourism industry. Originality/value The research puts forward proposal that identifies and recognizes a more viable Islamic financing alternative as well as Shariah-compliant regulations to pioneer the development of Islamic tourism in Maldives. The research recommends how to overcome related challenges helps government understand the proposed strategies for establishing Islamic tourism industry.


2019 ◽  
Vol 28 (3) ◽  
pp. 421-431 ◽  
Author(s):  
Sarah Joy Lyons ◽  
Anders Hauge Wien ◽  
Themistoklis Altintzoglou

Purpose The purpose of this study was to investigate how a consumer’s intention to purchase a premium or luxury product influences the anticipated regret and guilt. Design/methodology/approach A 2 × 2 × 2 between-subjects design (label: premium versus luxury × prior event: success versus failure × product type: hedonic versus utilitarian) on guilt and regret was implemented. Findings Following a successful event, the anticipated regret and guilt are lower for a hedonic product compared to a primarily utilitarian one. The effect was valid when the consumers were looking to buy both luxury and premium. In a situation following a failure, the anticipated levels of regret and guilt were lower for a product that was primarily utilitarian in nature; however, this effect only appeared when the participants were looking to buy both luxury and not premium. Research limitations/implications People may feel more licensed to indulge in a hedonic premium or luxury product after a success and more licensed to indulge in a utilitarian luxury product after a failure. Practical implications The results can be used to understand how to optimize a marketing message of indulgence whether or not one deserves it. Originality/value The study provides novel insight into how anticipated guilt and regret may be evoked by the goal of buying a premium versus luxury product in combination with the product type and a consumer’s experience of a prior event.


2019 ◽  
Vol 22 (4) ◽  
pp. 614-625 ◽  
Author(s):  
Mario Menz

Purpose The purpose of this study was to investigate the perception of trade-based money laundering in Letters of Credit (“L/C”) transactions among trade finance practitioners in the UK banking sector and to compare it to the perception of the same risk by the Financial Conduct Authority (“FCA”), the regulator of the UK’s banking sector. Design/methodology A survey was used to carry out research among financial services professionals engaged in trade finance in the UK. Findings This paper contributes to the existing literature in a number of ways. First, it investigates the perception of trade-based money laundering risk from the perspective of financial services professionals, which has not previously been done. Second, it argues that the perception of trade-based money laundering in financial services is overly focussed on placement, layering and integration, and that the full extent of the offence under the Proceeds of Crime Act 2002 is less well known. It further found that financial services firms need to improve their understanding of the nature of trade-based money laundering under UK law. Practical implications This study argues that the financial services sector’s perception of trade-based money laundering risk in trade finance is underdeveloped and makes suggestions on how to improve it. Originality/value It provided unique insight into the perception of trade-based money laundering risk among financial services professionals.


2014 ◽  
Vol 38 (8) ◽  
pp. 764-779 ◽  
Author(s):  
Christina Evans ◽  
David Lines

Purpose – This paper aims to provide an insight into the complexities of the identity work performed by independent coaches, based on an investigation into their “lived experiences”. The emerging coaching industry has created opportunities for individuals wishing to pursue a career as independent executive/career coaches. Design/methodology/approach – This exploratory investigation was conducted using the principles of grounded theory, drawing on insights from “knowledgeable informants” (18 in total) gained through interviews and focus group discussion. Findings – Despite the attractiveness of pursuing an independent career, the findings surfaced a number of tensions in the way that independent coaches transform and perform their identity. One tension involves balancing notions of self-identity and “ideal work” with presenting a credible self to different client groups, the purchasers of their services. Research limitations/implications – As the research focused on a specific category of independent practitioners, more research is required to assess the generalizability of the findings to other categories of practitioners. Practical implications – A framework illuminating the processual nature of identity work among independent coaches is presented. This could be used to inform developmental conversations with aspiring independent coaches, or to support the content on formal coaching programmes. Originality/value – In drawing attention to the complexities of identity work performed by independent coaches, given the contingencies affecting their work, this research offers a different contribution to the coaching literature.


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