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Article
Publication date: 1 March 1946

D.L. Mordell

THE engines used for the jet propulsion of aircraft have been described in detail on many occasions in the last year or so. Most of these descriptions, however, have been…

Abstract

THE engines used for the jet propulsion of aircraft have been described in detail on many occasions in the last year or so. Most of these descriptions, however, have been purely factual, and little has been written about the theoretical aspects. In view of the unconventionality of these power units, it is hoped that the following notes, in which a simple analysis of the theory is given, may be of interest.

Details

Aircraft Engineering and Aerospace Technology, vol. 18 no. 3
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 1 July 1947

Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Notes of the United States…

Abstract

Under this heading are published regularly abstracts of all Reports and Memoranda of the Aeronautical Research Council, Reports and Technical Notes of the United States National Advisory Committee for Aeronautics and publications of other similar Research Bodies as issued.

Details

Aircraft Engineering and Aerospace Technology, vol. 19 no. 7
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 5 July 2019

Eric J. Higgins, Joseph R. Mason and Adi E. Mordel

Both accounting and regulatory treatments classify securitizations as a “sale” of assets, therefore allowing the issuer to remove the assets from their books. The purpose…

Abstract

Purpose

Both accounting and regulatory treatments classify securitizations as a “sale” of assets, therefore allowing the issuer to remove the assets from their books. The purpose of this paper is to present conjectural evidence of recourse activity and bankruptcy treatment that undermine the fundamental concept of true sale.

Design/methodology/approach

The authors use investor reactions to firm’s first securitizations to isolate investors’ views of the potential risk transfer.

Findings

Investor reactions to firms’ first securitization announcements suggest that investors, themselves, think of the effects of securitizations as more like a financing than an asset sale. Firms securitizing for the first time exhibit negative short-term equity returns and negative long-term operating performance, reactions more similar to financings than asset sales. Additional analysis shows that securitization is also associated with increased systematic risk, suggesting that the rapid growth fueled by securitization is similar to increasing leverage. The effect is more pronounced for banks than non-banks.

Originality/value

This is the first study to have used firms' first securitizations to analyze the nature of risk transfer in securitizations. The results show that off-balance-sheet treatment for securitizations may be inappropriate, given investor perceptions of the nature of potential contingent liabilities.

Details

The Journal of Risk Finance, vol. 20 no. 3
Type: Research Article
ISSN: 1526-5943

Keywords

Article
Publication date: 2 March 2012

Esther Claudine Bitye Mvondo, Yves Cherruault and Jean‐Claude Mazza

The purpose of this paper is to use α‐dense curves for solving some Diophantine equations, such as Pythagorean triples, Linear Diophantine equations, the Pell Fermat…

Abstract

Purpose

The purpose of this paper is to use α‐dense curves for solving some Diophantine equations, such as Pythagorean triples, Linear Diophantine equations, the Pell Fermat equation, the Mordell equation for positive values.

Design/methodology/approach

The paper's aim is to present the applications in Number Theory of a new method based on α‐dense curves first developed at the beginning of the 1980s by Yves Cherruault and Arthur Guillez. The α‐dense curves generalize the space filling curves (Peanocurves,…) and fractal curves. This technique can be used for solving all problems of operational research in a simple way. The main idea consists in expressing n variables by means of a single one.

Findings

Apply the method to Number Theory. One of the most important applications is related to global optimization. Multivariable optimization problems coming from operational research or from industry can be quickly and easily solved.

Originality/value

The paper presents a new method based on α‐dense curves for solving Diophantine equations.

Article
Publication date: 13 October 2021

Anas Alaoui Mdaghri and Lahsen Oubdi

This paper aims to investigate the potential impact of the Basel III liquidity requirements, namely, the net stable funding ratio (NSFR) and the liquidity coverage ratio…

Abstract

Purpose

This paper aims to investigate the potential impact of the Basel III liquidity requirements, namely, the net stable funding ratio (NSFR) and the liquidity coverage ratio (LCR), on bank liquidity creation.

Design/methodology/approach

The authors developed a dynamic panel model using the Quasi-Maximum Likelihood estimation on an unbalanced panel dataset of 129 commercial banks operating in 10 Middle Eastern and North African (MENA) countries from 2009 to 2017.

Findings

The results show that the NSFR significantly negatively affects liquidity creation. Similarly, the LCR exerts a substantial negative impact on the liquidity creation of the sampled MENA banks. These findings suggest that complying with both liquidity requirements tends to curtail liquidity creation. Moreover, further regression analysis of large and small bank sub-samples uncovered results similar to the overall MENA sample.

Research limitations/implications

The findings raise interesting policy implications and suggest a trade-off between the benefits of the financial resiliency induced by implementing liquidity requirements and the creation of liquidity essential for promoting economic growth in the region.

Originality/value

Most empirical research focuses on the relationship between bank capital and liquidity creation. To the knowledge, this paper is the first to provide empirical evidence on the effect of both the NSFR and LCR regulatory liquidity standards on bank liquidity creation in the MENA region.

Details

Journal of Financial Regulation and Compliance, vol. 30 no. 2
Type: Research Article
ISSN: 1358-1988

Keywords

Article
Publication date: 1 November 1960

D.J. Johns

A report is given on the above Congress which was attended by approximately 550 delegates from twenty‐seven countries. The sixty papers presented embraced the subjects of…

Abstract

A report is given on the above Congress which was attended by approximately 550 delegates from twenty‐seven countries. The sixty papers presented embraced the subjects of aerodynamics, materials, structures, propulsion, air transport, aerospace medicine, space Hight and re‐entry; a selection of these papers are summarized below.

Details

Aircraft Engineering and Aerospace Technology, vol. 32 no. 11
Type: Research Article
ISSN: 0002-2667

Article
Publication date: 20 May 2020

Tim Hutchinson

This study aims to provide an overview of recent efforts relating to natural language processing (NLP) and machine learning applied to archival processing, particularly…

Abstract

Purpose

This study aims to provide an overview of recent efforts relating to natural language processing (NLP) and machine learning applied to archival processing, particularly appraisal and sensitivity reviews, and propose functional requirements and workflow considerations for transitioning from experimental to operational use of these tools.

Design/methodology/approach

The paper has four main sections. 1) A short overview of the NLP and machine learning concepts referenced in the paper. 2) A review of the literature reporting on NLP and machine learning applied to archival processes. 3) An overview and commentary on key existing and developing tools that use NLP or machine learning techniques for archives. 4) This review and analysis will inform a discussion of functional requirements and workflow considerations for NLP and machine learning tools for archival processing.

Findings

Applications for processing e-mail have received the most attention so far, although most initiatives have been experimental or project based. It now seems feasible to branch out to develop more generalized tools for born-digital, unstructured records. Effective NLP and machine learning tools for archival processing should be usable, interoperable, flexible, iterative and configurable.

Originality/value

Most implementations of NLP for archives have been experimental or project based. The main exception that has moved into production is ePADD, which includes robust NLP features through its named entity recognition module. This paper takes a broader view, assessing the prospects and possible directions for integrating NLP tools and techniques into archival workflows.

Book part
Publication date: 12 November 2008

Casey A. Holtz and Robert A. Fox

Behavior problems are common in toddlers and preschoolers. Richman, Stevenson, and Graham (1975) identified difficulties with eating, sleeping, toileting, temper, fears…

Abstract

Behavior problems are common in toddlers and preschoolers. Richman, Stevenson, and Graham (1975) identified difficulties with eating, sleeping, toileting, temper, fears, peer relations, and activity as typical in this young population. While all young children should be expected to experience behavior problems as part of their normal development, an ongoing challenge in the field has been to determine when these “normal” developmental problems rise to the level of being considered “clinical” behavior problems (Keenan & Wakschlag, 2000). For example, when does a two-year-old child's tantrum behavior, a three-year-old's urinary accidents, and a four-year-old's defiance become clinically significant? To answer these questions, clinicians must examine the frequency, intensity, and durability of these difficulties, their potential to cause injury to the child or others, the extent to which they interfere with the child development, and the degree to which they disrupt the lives of their siblings, caregivers, peers, teachers, and others.

Details

Autism and Developmental Disabilities: Current Practices and Issues
Type: Book
ISBN: 978-1-84855-357-6

Article
Publication date: 1 January 2014

Raistrick W. Turton

Challenging behaviours are defined in part by the risks of harm they present and the support of individuals who challenge would be improved with effective assessments of…

Abstract

Purpose

Challenging behaviours are defined in part by the risks of harm they present and the support of individuals who challenge would be improved with effective assessments of the risks posed by challenging behaviours. The purpose of this paper is to outline a model of risk assessment and review literature that provides relevant information.

Design/methodology/approach

Literature review.

Findings

Forensic risk assessment has a well worked-out and validated approach but tools used to assess challenging behaviours are not effective risk predictors. Applied Behaviour Assessment provides methods that can be more effectively used for risk assessment.

Practical implications

There is a need to develop valid risk assessment procedures for assessing the risks presented by challenging behaviours.

Originality/value

This is a fresh perspective on risk assessment in relation to challenging behaviours.

Details

Advances in Mental Health and Intellectual Disabilities, vol. 8 no. 1
Type: Research Article
ISSN: 2044-1282

Keywords

Open Access
Article
Publication date: 20 September 2022

Tahani Z. Aldahdouh, Vesna Holubek, Vesa Korhonen, Sanaa Abou-dagga and Nazmi Al-Masri

The aim of this study is to explore the extent to which a transnational pedagogical training affected university teachers' approaches to teaching, as well as their…

Abstract

Purpose

The aim of this study is to explore the extent to which a transnational pedagogical training affected university teachers' approaches to teaching, as well as their efficacy beliefs and cultural perceptions, and to examine how such training could stimulate teachers' pedagogical-development processes beyond the specific context.

Design/methodology/approach

An explanatory sequential mixed-methods design was adopted for the study. Quantitative data were collected through an online self-reported questionnaire from two-independent samples, both before (n = 119) and after (n = 110) the training. Qualitative data were collected after the training through episodic narrative interviews with five teachers.

Findings

The quantitative and qualitative findings indicate contradictory aspects of the teaching approach and perceived culture. While the questionnaire responses highlighted the dominance of teacher-centred teaching approaches and an individualistic culture, a thematic analysis of the interview data showed that teachers experienced pedagogical development as (1) increasing student engagement, (2) improving their own teaching practices, (3) a community activity and (4) an institutionalised process.

Research limitations/implications

The design of the current research may have limited the authors’ potential to deeply investigate the effect of the transnational pedagogical training, as only snapshots of the teachers' perceptions were elicited. Future studies might consider a within-subject longitudinal design to thoroughly follow teachers' trajectories in learning and development over time.

Practical implications

The research findings suggest that transnational pedagogical training initiatives are to be promoted amidst these uncertain times. Even though the focus of the study was not to explore the teachers' perceptions of teaching development during the pandemic, the current results imply that the mentioned training helped teachers in tailoring their pedagogical practices to suit the unexpected online teaching settings.

Originality/value

The study adds to the relatively new literature on the perceived effect of transnational pedagogical training initiatives. This study’s findings contribute to the body of knowledge related to pedagogical development in fragile and conflict-affected contexts.

Details

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

Keywords

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