Emerald – a 16-rotor multicopter for stereo imaging

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Svetoslav Zabunov ◽  
Garo Mardirossian ◽  
Katia Strelnitski

Purpose The current manuscript aims to propose a novel multirotor design. Design/methodology/approach This paper presents a novel 16-rotor multicopter design named Emerald. The novel design innovations and benefits are disclosed. Comparison to existing 16-rotor designs is carried out. Implementation areas where the novel idea shall yield benefit are discussed. A prototype of the presented design is described. Findings The herein proposed 16-rotor design has a number of benefits over existing 16-rotor multicopters. The paper elaborates on those advantages. Research limitations/implications The research was limited to prototype testing, as the presented design is a novel concept. Practical implications The motivation to research and develop this novel design is implementing the vehicle for stereoscopic photography and reconnaissance. The design is also applicable to carrying payloads while flying indoors.

2019 ◽  
Vol 92 (2) ◽  
pp. 229-236
Author(s):  
Svetoslav Zabunov ◽  
Roumen Nedkov

Purpose This paper aims to reveal the authors’ conceptual and experimental work on an innovative avionics paradigm for small unmanned aerial vehicles (UAVs). Design/methodology/approach This novel approach stipulates that, rather than being centralized at the autopilot, control of avionics devices is instead distributed among controllers – spread over the airframe span, in response to avionics devices’ natural location requirements. The latter controllers are herein referred to as edge controllers by the first author. Findings The edge controller manifests increased efficiency in a number of functions, some of which are unburdened from the autopilot. The edge controller establishes a new paradigm of structure and design of small UAVs avionics such that any functionality related to the periphery of the airframe is implemented in the controller. Research limitations/implications The research encompasses a workbench prototype testing on a breadboard, as the presented idea is a novel concept. Further, another test has been conducted with four controllers mounted on a quadcopter; results from the vertical attitude sustenance are disclosed herein. Practical implications The motivation behind developing this paradigm was the need to position certain avionics devices at different locations on the airframe. Due to their inherent functional requirements, most of these devices have hitherto been placed at the periphery of the aircraft construction. Originality/value The current paper describes the novel avionics paradigm, compares it to the standard approach and further reveals two experimental setups with testing results.


Author(s):  
Rabeb Rebhi ◽  
Amina Ibala ◽  
Ahmed Masmoudi

Purpose – The purpose of this paper is to investigate the generating capability of a novel hybrid excited brushless claw pole alternator (HEBCPA) with improved cost-effectiveness gained thanks to the substitution the rotor NdFeB-made permanent magnet (PM) with ferrite ones. Design/methodology/approach – The investigation of the magnetic features of the novel HEBCPA has been carried out using a 3D finite element analysis (FEA). Findings – It has been found that the machine generating capability is not affected by the substitution of the single rotor NdFeB-made PM by stator and rotor ferrite-made ones, which represents a crucial cost benefit. Research limitations/implications – An experimental validation of the features computed by FEA shall be considered as an outlook of the present work. Practical implications – The novel HEBCPA could be of great interest for automotive generating systems. Originality/value – The proposed HEBCPA with ferrite-made PMs is a novel concept.


2019 ◽  
Vol 11 (2) ◽  
pp. 87-107
Author(s):  
Elizabeth Toomey

Purpose On 12 November 2018, New Zealand's Land Transfer Act 2017 came into force. The purpose of this paper is to pinpoint some of the significant changes in the Act that challenge the fundamental concepts of the Torrens system of registration. Design/methodology/approach The paper addresses three significant reforms: a definition of land transfer fraud; the concept of immediate indefeasibility with limited judicial discretion and its impact on volunteers and the Gibbs v. Messer anomaly; and the compensation regime. Case studies illustrate the effect of these changes. Findings The limited legislative definition of fraud reflects the common law and allows for any necessary flexibility. The new Act reiterates the principle of immediate indefeasibility but qualifies it with the introduction of some judicial discretion. This is a novel concept for the courts and will undoubtedly be dealt with cautiously. The author voices some disquiet with regard to some of the guidelines set out in s 55(4) of the Act. The compensation provisions introduce an element of an owner's culpability. An owner now runs the risk of reduced compensation if there has been a lack of proper care. Research limitations/implications The implications of this research are fundamental for New Zealand's land transfer system. Practical implications The limited judicial discretion will challenge the courts of New Zealand. The new compensation provisions will ensure that an owner's carelessness will be accountable. Originality/value This study is one of the first to analyse the Land Transfer Act 2017 (New Zealand). Its value extends beyond New Zealand shores as it has implications for global land transfer systems.


2015 ◽  
Vol 23 (4) ◽  
pp. 5-7

Purpose – Describes how a home-improvement company that seeks to “rewrite the rule book in its sector” has opened a dedicated training center whose design replicates customers’ homes where most of its sales take place. Design/methodology/approach – Explains the reasons for the Everest Training Academy, the form it takes and the results it is helping to achieve. Findings – Reveals that the idea behind the training academy is to help the company’s sales people to feel comfortable about selling in people’s homes and to showcase other products than simply windows and doors. Practical implications – Explains that the academy is designed to ensure that staff are respected for their knowledge and professionalism, and feel good about themselves and the position they hold at Everest. Originality/value – Describes a novel design of training academy.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Freya Higgins-Desbiolles ◽  
Bobbie Chew Bigby ◽  
Adam Doering

PurposeThis article considers the possibilities of and barriers to socialising tourism after the coronavirus disease 2019 (COVID-19) pandemic. Such an approach allows us to transform tourism and thereby evolve it to be of wider benefit and less damaging to societies and ecologies than has been the case under the corporatised model of tourism.Design/methodology/approachThis conceptual analysis draws on the theorisation of “tourism as a social force” and the new concept of “socialising tourism”. Using critical tourism approaches, it seeks to identify the dynamics that are evident in order to assess the possibilities for socialising tourism for social and ecological justice. It employs an Indigenous perspective that the past, present and future are interconnected in its consideration of tourism futures.FindingsCOVID-19 has fundamentally disrupted tourism, travel and affiliated industries. In dealing with the crisis, borders have been shut, lockdowns imposed and international tourism curtailed. The pandemic foregrounded the renewal of social bonds and social capacities as governments acted to prevent economic and social devastation. This disruption of normality has inspired some to envision radical transformations in tourism to address the injustices and unsustainability of tourism. Others remain sceptical of the likelihood of transformation. Indeed, phenomena such as vaccine privilege and vaccine tourism are indicators that transformations must be enabled. The authors look to New Zealand examples as hopeful indications of the ways in which tourism might be transformed for social and ecological justice.Practical implicationsThis conceptualisation could guide the industry to better stakeholder relations and sustainability.Social implicationsSocialising tourism offers a fruitful pathway to rethinking tourism through a reorientation of the social relations it fosters and thereby transforming its social impacts for the better.Originality/valueThis work engages with the novel concept of “socialising tourism”. In connecting this new theory to the older theory of “tourism as a social force”, this paper considers how COVID-19 has offered a possible transformative moment to enable more just and sustainable tourism futures.


2018 ◽  
Vol 34 (9) ◽  
pp. 4-6

Purpose This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings Firms determining their innovation strategy should consider how they connect with other companies. In a close-knit network, it is most appropriate to share knowledge and resources in order to enhance current offerings. But in a network characterized by diversity among members, firms would benefit more by acting as the broker to fill structural holes and gain access to the novel ideas, knowledge and resources needed to implement exploratory innovation. Originality/value The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Toni Ryynänen ◽  
Visa Heinonen

Purpose Temporal consumption experiences have been conceptualised as universal, subjective or practice-based experiences. Little research, though, addresses such experiences in conjunction with the repeated and situational consumption events that bring them about. The purpose of this paper is to extend current knowledge by examining how the temporal and situational intertwine during consumption events. For this purpose, the concept of a consumption timecycle based on the research data is constructed. Design/methodology/approach The paper takes a longitudinal and researcher-led approach to study temporal consumption experiences. The data was collected through participant observations, video recordings and personal subjective introspections during three consecutive annual Nordic motorcycle consumer trade shows (2014–2016). The data was analysed using an interpretive approach. Findings The results demonstrate five temporalities that characterise a consumption timecycle as follows: emerging, core, intensifying, fading and idle-time temporalities. The features of these temporal experiences are presented in the conclusions section of the paper. Research limitations/implications Recalled temporal experiences are mediated experiences and they differ from lived experiences. The transferability or generalisability of the results might be limited, as the case is situated in the Nordic context. Originality/value The paper presents the novel concept of a consumption timecycle that extends current debates about consumer time. The consumption timecycle is contrasted with established temporal concepts in consumer and marketing research.


2019 ◽  
Vol 25 (8) ◽  
pp. 1411-1420 ◽  
Author(s):  
Donghua Zhao ◽  
Weizhong Guo ◽  
Baibing Zhang ◽  
Feng Gao

Purpose This paper aims to investigate the circulation of moist silica sand to provide appropriate feeding modes and references for designing the coating device when printing sand mold with line-forming. Design/methodology/approach First, this paper briefly introduces sand mold printing with line-forming and the circulation problem brought by moist silica sand. The outlet may be choked due to poor flowability and solidification characteristic, resulting in poor dimensional tolerance and even production failure. Then, based on circulation modeling, a series of feeding modes is proposed to guarantee adequate feeding, avoid solidification and ensure successful fabrication. Finally, the GUI of control software is developed, including slicing, path planning and the function of virtual printing. Findings Several feeding modes of moist silica sand are put forward to avoid the choke. Research limitations/implications The authors will further investigate the flowability of furan no-bake sand based on experiments. Originality/value This paper is going to provide references for the novel design of nozzle, prototype and sand mold printing, influencing significantly on mold manufacturing and the casting industry. This research applies equally to equipment having the circulation of high moist particles with solidification features.


2021 ◽  
Vol 34 (2) ◽  
pp. 507-524
Author(s):  
Giulio Caldarelli ◽  
Alessandro Zardini ◽  
Cecilia Rossignoli

PurposeThis paper aims to examine and overcome the barriers to the widespread adoption of blockchain technology, introducing a novel concept of sustainability in the fashion supply chain.Design/methodology/approachThis work is an exploratory study of a well-known fashion company operating in the Veneto region (Italy). Data extracted from interviews and focus groups are coded using the (CAQDAS) software AQUAD. The outcome is then organized according to an adapted TOE view.FindingsThis exploration study's findings support the idea that the blockchain solution could be a valuable add-on in sustainable supply chains. However, a high understanding of technology and extensive communication with clients is required for successful integration.Research limitations/implicationsBeing the outcome of qualitative analysis, the findings require further investigation to be inferable at a broader scale. As the project is still incomplete, some managerial choices are always subject to change.Practical implicationsFocused on a practitioner approach, this paper should guide managers in the process of successfully implementing blockchain technology. Arguably, similar companies may opt for similar choices.Originality/valueTo the best of the authors' knowledge, this is the first paper to contextualize and address the blockchain adoption barriers in the fashion supply chain. Furthermore, it offers an overview of how blockchain affects sustainable production.


2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sitara Karim ◽  
Muhammad Abubakr Naeem ◽  
Nawazish Mirza ◽  
Jessica Paule-Vianez

PurposeThis study quantified the hedge and safe haven features of bond markets for multiple cryptocurrency indices from June 2014 to April 2021 to highlight whether bond markets offer hedging facilities to uncertainty indices of cryptocurrencies.Design/methodology/approachThe authors employed the methodology of Baur and McDermott (2010) and AGDCC-GARCH model to measure the hedge and safe-haven characteristics of three bond markets (BBGT, SPGB and SKUK) for three uncertainty indexes of cryptocurrencies (UCRPR, UCRPO and ICEA).FindingsThe authors find that bond markets are neither hedge nor safe havens except for SKUK which is a safe haven investment for cryptocurrency indices and offers substantial diversification during the periods of economic fragility. In addition, the hedge effectiveness of SPGB outperforms other bonds during crisis periods and provides sufficient diversification potential for cryptocurrency indices.Practical implicationsThe findings are important for policymakers, regulatory bodies, financial firms and investors in assessing hedge and safe haven characteristics of bond markets against cryptocurrency indices.Originality/valueEmploying the novel methodology of AGDCC-GARCH with three different bond markets and three uncertainty indices of cryptocurrencies, the current study adds to the existing strand of literature in terms of quantifying hedge and safe-haven attributes of bond markets for cryptocurrency uncertainty indexes.


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