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Open Access
Article
Publication date: 21 December 2023

Rafael Pereira Ferreira, Louriel Oliveira Vilarinho and Americo Scotti

This study aims to propose and evaluate the progress in the basic-pixel (a strategy to generate continuous trajectories that fill out the entire surface) algorithm towards…

Abstract

Purpose

This study aims to propose and evaluate the progress in the basic-pixel (a strategy to generate continuous trajectories that fill out the entire surface) algorithm towards performance gain. The objective is also to investigate the operational efficiency and effectiveness of an enhanced version compared with conventional strategies.

Design/methodology/approach

For the first objective, the proposed methodology is to apply the improvements proposed in the basic-pixel strategy, test it on three demonstrative parts and statistically evaluate the performance using the distance trajectory criterion. For the second objective, the enhanced-pixel strategy is compared with conventional strategies in terms of trajectory distance, build time and the number of arcs starts and stops (operational efficiency) and targeting the nominal geometry of a part (operational effectiveness).

Findings

The results showed that the improvements proposed to the basic-pixel strategy could generate continuous trajectories with shorter distances and comparable building times (operational efficiency). Regarding operational effectiveness, the parts built by the enhanced-pixel strategy presented lower dimensional deviation than the other strategies studied. Therefore, the enhanced-pixel strategy appears to be a good candidate for building more complex printable parts and delivering operational efficiency and effectiveness.

Originality/value

This paper presents an evolution of the basic-pixel strategy (a space-filling strategy) with the introduction of new elements in the algorithm and proves the improvement of the strategy’s performance with this. An interesting comparison is also presented in terms of operational efficiency and effectiveness between the enhanced-pixel strategy and conventional strategies.

Details

Rapid Prototyping Journal, vol. 30 no. 11
Type: Research Article
ISSN: 1355-2546

Keywords

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Book part
Publication date: 1 December 2023

Gail Anne Mountain

Abstract

Details

Occupational Therapy With Older People into the Twenty-First Century
Type: Book
ISBN: 978-1-83753-043-4

Open Access
Article
Publication date: 25 November 2021

Daniel McCarville

Benford's Law is an empirical observation about the frequency of digits in a variety of naturally occurring data sets. Auditors and forensic scientists have used Benford's Law to…

Abstract

Benford's Law is an empirical observation about the frequency of digits in a variety of naturally occurring data sets. Auditors and forensic scientists have used Benford's Law to detect erroneous data in accounting and legal usage. One well-known limitation is that Benford's Law fails when data have clear minimum and maximum values. Many kinds of education data, including assessment scores, typically include hard maximums and therefore do not meet the parametric assumptions of Benford's Law. This paper implements a transformation procedure which allows for assessment data to be compared to Benford's Law. As a case study, a data quality assessment of oral language scores from the Early Childhood Longitudinal Study, Kindergarten (ECLS-K) study is used and higher risk data segments detected. The same method could be used to evaluate other concerns, such as test fraud, or other bounded datasets.

Details

Emerald Open Research, vol. 1 no. 3
Type: Research Article
ISSN: 2631-3952

Keywords

Content available
Article
Publication date: 17 January 2024

Daisy Grace Burden

Parents whose children have undergone an autism assessment often describe the process as extremely stressful. This affects how parents engage with services post-diagnosis, meaning…

Abstract

Purpose

Parents whose children have undergone an autism assessment often describe the process as extremely stressful. This affects how parents engage with services post-diagnosis, meaning less likelihood of using subsequent service support despite struggling to cope. Since parents already report many barriers to accessing services, e.g. long waiting lists, lack of co-ordination and limited resources (Sapiets et al. 2023), negative experiences during assessment should not pose another potential barrier to engagement. This study aimed to address how families’ needs can be better met during the assessment process.

Design/methodology/approach

In this qualitative study, the author conducted semi-structured interviews with 11 parents whose child had undergone an autism assessment in the last five years. Thematic analysis determined key themes.

Findings

The six themes were: clarity and communication, access to support and resources, aftercare, recognition of parent concerns, personalisation of the assessment process and concerns around the use of personal protective equipment/online assessments. These themes led to criteria to assess the quality of autism assessment services in line with parent perspectives.

Practical implications

These parent-informed criteria could facilitate the consideration of parents’ views into service evaluations of autism assessment services across the UK.

Originality/value

Previous research indicates that the autism assessment experience is often extremely stressful and overwhelming for families (Crane et al., 2016). Despite this, guidance to improve autism services rarely prioritises the opinions and experiences of service-users and their families. The criteria presented here were derived from themes identified by interviewing parents on their experiences of the autism assessment process, thus shifting the focus onto service-users.

Details

Advances in Autism, vol. 10 no. 1
Type: Research Article
ISSN: 2056-3868

Keywords

Open Access
Article
Publication date: 26 March 2024

Sergio de la Rosa, Pedro F. Mayuet, Cátia S. Silva, Álvaro M. Sampaio and Lucía Rodríguez-Parada

This papers aims to study lattice structures in terms of geometric variables, manufacturing variables and material-based variants and their correlation with compressive behaviour…

Abstract

Purpose

This papers aims to study lattice structures in terms of geometric variables, manufacturing variables and material-based variants and their correlation with compressive behaviour for their application in a methodology for the design and development of personalized elastic therapeutic products.

Design/methodology/approach

Lattice samples were designed and manufactured using extrusion-based additive manufacturing technologies. Mechanical tests were carried out on lattice samples for elasticity characterization purposes. The relationships between sample stiffness and key geometric and manufacturing variables were subsequently used in the case study on the design of a pressure cushion model for validation purposes. Differentiated areas were established according to patient’s pressure map to subsequently make a correlation between the patient’s pressure needs and lattice samples stiffness.

Findings

A substantial and wide variation in lattice compressive behaviour was found depending on the key study variables. The proposed methodology made it possible to efficiently identify and adjust the pressure of the different areas of the product to adapt them to the elastic needs of the patient. In this sense, the characterization lattice samples turned out to provide an effective and flexible response to the pressure requirements.

Originality/value

This study provides a generalized foundation of lattice structural design and adjustable stiffness in application of pressure cushions, which can be equally applied to other designs with similar purposes. The relevance and contribution of this work lie in the proposed methodology for the design of personalized therapeutic products based on the use of individual lattice structures that function as independent customizable cells.

Details

Rapid Prototyping Journal, vol. 30 no. 11
Type: Research Article
ISSN: 1355-2546

Keywords

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