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Climate change and rapid urbanisation constitute wicked problems to which the design community must respond. This paper focuses on hybrid smart Nature Based Solutions (NBS) which combine digital, engineered and natural components. Based on case studies and interviews, this paper presents a model to enable manufacturing organisations to navigate the complexities of designing and commercialising such complex systems, focusing on the inter-organisational partnerships required and mitigation techniques to address complexities throughout the project lifecycle. This work challenges existing concepts of hybrid, complex systems to account for NBS and their unique complexities. We argue that smart Nature Based System is a more apt way to conceptualise these solutions which incorporate digital twin, A.I and weather data to deliver urban resilience and sustainability.
Problem framing is a foundational aspect of the engineering design process, shaping how designers perceive challenges and potential solutions. Qualitiative methods, such as protocol analysis, have provided valuable insights about problem framing but are labor-intensive and time consuming. This study explores the use of a NLP technique BERTopic, to analyze framing in design conversations. BERTopic retains contextual nuances, offering a tool for uncovering the diversity and uniqueness of concepts explored by design teams while also making the analysis process more efficient. The results provide one representation of eight design group’s processes, highlighting the different and changing topic representations that emerge throughout a design session. The findings highlight the potential of NLP tools for enhancing our understanding of framing in design cognition and team dynamics.
This study aimed to investigate the association between moderate thinness (MT) and muscle strength among children aged 5–7 years old in Ethiopia.
Design:
A school-based comparative cross-sectional study was conducted between June and July 2022. Their nutritional status (MT v. well-nourished (WN) was identified using BMI-for-age-and-sex; hand grip was measured using a digital grip strength dynamometer, and biceps, quadriceps and gastrocnemius strength were measured with Digital (Handheld) Dynamometry. Independent predictors of muscle strength were identified using a multivariable linear regression model.
Setting:
The study was conducted in Kindergarten and primary schools of Jimma Town, located in Southwest Ethiopia.
Participants:
Children 5–7 years old (n 388) with moderate thinness (MT = 194) and well-nourished peers (WN = 194).
Results:
Children with MT (n 198) had significantly lower grip strength, biceps, quadriceps and gastrocnemius muscle groups than WN children (n 198) (P < 0·001). The mean and sd of grip strength were 4·15 (sd 2·56) kg for MT and 5·6 (sd 2·04) kg for WN children. Biceps strength was 34·3 (sd 7·34) Newton (N) for MT and 48 (11·69) N for WN children. Gastrocnemius strength was 30·1 (6·9) N for MT and 45·1 (sd 9·7) N for WN children. After adjusting for background characteristics, WN children had 1·38 times higher grip strength (β = 1·38, P < 0·001), 11·22 times higher biceps strength (β = 11·22, P < 0·001), 16·70 times higher quadriceps strength (β = 16·70, P < 0·001) and 12·75 times higher gastrocnemius strength (β = 12·75, P < 0·001) than MT children.
Conclusion:
Children with MT had significantly lower muscle strength than their WN counterparts. This highlights the negative functional effect of wasting.
This study explores the use of agile methods to support Additive Manufacturing (AM) in transitioning from R&D to production. Using a consumer goods company division as a case study, the research examines how agile methods facilitate flexibility, collaboration, and innovation despite challenges such as the materiality of products methods inconsistencies. Findings reveal how tailored agile practices designed for Additive Manufacturing enhance technology readiness and identify areas for improvement, including stakeholder engagement and role alignment. Recommendations are proposed to refine an Agile Design Process Model for Additive Manufacturing and improve technology maturation.
The marine industry is increasingly adopting platform and modular design strategies while facing growing sustainability regulations and emission constraints. This paper proposes an approach that integrates scope 3 upstream CO2 emissions (i.e., procurement) into a Decision Support Environment (DSE) for design space exploration of alternative modular ship design concepts. The DSE, deployed in the conceptual design stage, enables simultaneous testing of various cruise ship configurations regarding CO2 emissions using a bottom-up approach with parametric CO2 models. It leverages data-driven models from existing databases or AI-generated data exemplified in a case study on the hotel system of a cruise ship illustrates how parametric design variables influence CO2 emissions, demonstrating a preliminary result of a prescriptive study in collaboration with a major international ship manufacturer
Gradually transforming abstract, conceptual ideas into physical assemblies is seen as one of the key competences of design engineers. Despite the general recognition of the Embodiment Design task as essential phase of every development process, a general methodical support seems either not available or, at least, not influential. Instead, Embodiment Design is often considered an expert task. In this context, our paper offers a discussion of embodiment design from a design methodology perspective. Drawing from a review of relevant literature, we explain why embodiment might be better understood as the representation of the physical artifact rather than a design phase, provide properties and characteristics of good embodiment solution, and give initial guidance for the transition from the creative exploration of concepts to the actual search for satisfactory, or even optimal, embodiments.
Robust Design (RD) is crucial in product development to ensure that products maintain reliable performance under varying conditions. Design knowledge is fundamental to RD. However, current methods lack a systematic approach to support design engineers in building design knowledge for RD. This paper addresses this gap by introducing a hypothesis-based method for systematically building design knowledge for RD. RD hypotheses are specifically developed for this purpose and are tested through a five-step method. The application of this method is demonstrated in a case study involving a hand-operated coining machine. The results show that the proposed method supports building specific design knowledge through two RD hypotheses. By employing this method, design engineers are systematically supported in making design decisions, leading to more robust product concepts.
Bahiagrass, guineagrass, and vaseygrass are dominant weeds in bermudagrass pastures. Chemical control of these weeds is difficult, as some herbicides damage bermudagrass. The objectives of this study were to assess the effect of glyphosate and glyphosate mixes with imazapic and nicosulfuron + metsulfuron on bahiagrass control and to evaluate the effect of glyphosate and/or imazapic and nicosulfuron + metsulfuron on guineagrass and vaseygrass control under greenhouse conditions. Bahiagrass field trials were conducted in Citra and Ona, FL, in 2016 and 2018, respectively, while greenhouse experiments were conducted in Ona in 2017 and 2018. Glyphosate tank mixes reduced bahiagrass biomass in Ona, whereas at Citra, biomass reduction did not differ between treatments, although visual estimates of control were lowest with glyphosate at 0.28 kg ae ha−1. Results from the greenhouse experiment show that 0.38 and 0.50 kg ae ha−1 of glyphosate were needed to achieve 80% (ED80) control at 30 d after treatment (DAT), whereas 0.60 and 0.47 kg ae ha−1 were required to reduce 80% biomass of guineagrass and vaseygrass at 60 DAT, respectively. Vaseygrass needed lower imazapic rates (0.05 and 0.19 kg ae ha−1) for ED80 control (visual estimates) and biomass reduction, respectively, whereas guineagrass required higher doses (0.31 and 0.28 kg ae ha−1 for visual estimates of control and biomass reduction, respectively). Glyphosate at 0.56 kg ae ha−1, glyphosate + imazapic, or nicosulfuron + metsulfuron reduced guineagrass biomass, whereas imazapic only, glyphosate tank mixes, and nicosulfuron + metsulfuron resulted in the highest vaseygrass biomass reduction. Glyphosate and glyphosate tank mixes were consistent in controlling all grasses, yet imazapic was effective at higher rates for guineagrass.
This paper introduces a method for developing a knowledge graph aimed to enhance collaboration and information management in virtual product development. The proposed methodology integrates data from diverse sources, including CAD models and geometry, requirements and user-related data to construct a knowledge graph that enhances the retrieval and organization of information. Use-cases, such as information retrieval, tracking changes, and user-issue management, are explored to illustrate the potential of the knowledge graph. The paper details the steps of building the knowledge graph, from defining the ontology to implementing the graph using a structured data format. The structured method presented demonstrates significant potential to enhance collaboration and support the virtual development process, potentially leading to reduced development times and costs.
This study examines the effects of linguistic elements in Vocaloid BGM on creativity, fluency and originality, aiming to design sound environments that enhance creative performance. Experiments were conducted under three BGM conditions: voiced-meaningful (VF), voiced-meaningless (VL), and non-voiced (NV). VF utilized the original Vocaloid song with lyrics, NV excluded lyrics entirely, while VL replaced lyrics with the syllable “la.” Results revealed that VF BGM could disrupt concentration and reduce creativity, while VL and NV conditions enhanced relaxation and improved originality. These effects became more pronounced as tasks progressed. A positive correlation was identified between mind-wandering tendencies and creativity, particularly with VF BGM. The findings highlight the importance of tailoring sound environments to cognitive modes and personal characteristics.
Prospective consent in neonatal research poses significant challenges, particularly during urgent, time-sensitive clinical windows of study enrollment. This is especially true at referral centers for large geographic regions. A partial waiver of consent offers a potential translational science approach to enhance access to research participation in critically ill neonates. We compared enrollment rates in a study evaluating pulse oximetry accuracy across neonates with varying skin pigmentation before and after implementing a partial waiver of consent. Overall enrollment increased significantly without creating a racial disparity in enrollment, thereby improving generalizability and efficiency in neonatal clinical research.
To examine the impacts of school-based CalFresh Healthy Living (CFHL-California’s SNAP-Ed) interventions post-COVID-19-related school closures and whether student and school characteristics modified intervention impacts on student diet and physical activity (PA).
CFHL-eligible public schools (nintervention = 51; ncomparison = 18).
Participants:
4th/5th grade students (nintervention = 2115; ncomparison = 1102).
Results:
CFHL interventions were associated with an increase in consumption frequency of fruit (0·19 times/d (P = 0·015)) and vegetables (0·35 times/d (P = 0·006)). Differences in baseline diet and PA behaviours were observed by student race and gender and by whether the proportion of free and reduced-price meal (FRPM)-eligible students was above the state average. Notably, students in schools with FRPM above the state average reported more frequent consumption of sugar-sweetened beverages (Mean (se): 3·18 (0·10) v. 2·58 (0·11); P = 0·001) and fewer days/week with 60+ min of moderate-to-vigorous PA (MVPA) (Mean (se): 2·8 (0·10) v. 3·21 (0·12); P = 0·020) than those at schools with FRPM at/below the state average. Student gender, school urbanicity and school FRPM modified the relationship between the interventions and certain dietary and/or PA outcomes. Interventions were associated with greater increases in vegetable consumption in more urban schools (β (95 % CI) = 0·67 (0·15, 1·20)), and greater increases in fruit consumption (β (95 % CI) = 0·37 (0·07, 0·66)) and in MVPA in higher FRPM schools (β (95 % CI) = 0·86 (0·33, 1·39)).
Conclusions:
Findings reaffirmed effectiveness of school-based CFHL interventions. We identified existing student and school-level disparities and then observed that interventions were associated with greater increases in MVPA in the highest FRPM schools. Findings can inform an equity-centred approach to delivery of school-based interventions that facilitate equal opportunity for all children to achieve lifelong health.
Depressive symptoms are common in mild cognitive impairment (MCI). These may be associated with poorer cognitive function and increased risks of dementia transition.
Aims
We aimed to examine the cognitive patterns associated with variations in depressive symptoms in neurodegenerative MCI without a primary mood disorder.
Method
Individuals with MCI (n = 123), including MCI due to Alzheimer’s disease (n = 54) and MCI with Lewy bodies (n = 69), underwent repeated annual assessment of cognitive function and concurrent depressive symptoms using the Addenbrooke’s Cognitive Examination-Revised and the Geriatric Depression Scale-15, respectively.
Between- and within-person differences in depressive symptoms were disaggregated and related to between- and within-person cognitive differences and modification of cognitive performance trajectories over time.
Results
There was strong evidence of a state-based association between depressive symptoms and cognitive function. Intra-individual differences in depressive symptoms were negatively associated with concurrent cognitive performance such that a 2-point increase in depressive score explained a 1-point decrease in cognitive score, on average (point estimate −0.56, 95% credibile interval (CrI) −1.05 to −0.08).
The data did not support a trait-based association between depressive symptoms and cognitive performance (point estimate 0.10, 95% CrI −0.42 to 0.59), nor any between- or within-person trajectory modification associated with depressive symptoms.
Conclusions
Within-person variations in depressive symptom severity are associated with acute cognitive performance differences. Cognitive scores derived during active depressive periods may underestimate longer-term cognitive capabilities. Treating depressive symptoms in MCI may clarify underlying cognitive performance capacity, and help maintain optimal cognitive function for longer.
The British Paediatric Surveillance Unit of the UK Royal College of Paediatrics and Child Health contacts participating consultant paediatricians each month to survey whether particular rare conditions or events have been seen in their services. This national surveillance of rare paediatric events has allowed a large amount of research into multiple paediatric conditions. In 2009, the Royal College of Psychiatrists established a similar system – the Child and Adolescent Psychiatry Surveillance System (CAPSS) – to survey consultant psychiatrists in UK and Ireland. Since many conditions involve mental and physical health features, seven studies have been run using reporting to both systems, with simultaneous surveillance across both paediatricians and psychiatrists. Given the desire by policymakers, commissioners and clinicians for well-integrated physical and mental healthcare (‘joined-up working’), and if the surveillance systems were functioning well, the CAPSS Executive expected high rates of parallel reporting of individual patients to the two systems. The current study synthesises the rates of parallel reporting of cases to those two systems. We assimilate rates of parallel reporting across the seven studies using figures that have already been published, and by contacting contributing research groups directly where the relevant figures are not currently published. No new primary data were collected.
Results
Of the 1211 confirmed cases, 47 (3.9%) were reported by both psychiatrists and paediatricians. No parallel reporting occurred in four of the seven studies.
Clinical implications
Our findings raise questions about whether joined-up working in mental and physical healthcare is happening in practice. Research into challenges to obtaining comprehensive surveillance will help epidemiologists improve their use of surveillance and control for biases.
The rapid increase in Waste Electrical and Electronic Equipment (WEEE) presents significant environmental challenges, requiring the development of efficient and effective disassembly and recycling strategies. Although extensive theoretical research has explored product redesign to facilitate automated disassembly, practical validations of such approaches remain limited. This study examines the technical feasibility of applying design-for-disassembly principles to enable automated dismantling processes using general-purpose robotic systems. Using a consumer electronic remote control as a case study, this paper demonstrates how targeted product redesign can improve compatibility with robotic systems during disassembly. The findings provide valuable insights into sustainable product design and end-of-life management, with implications for supporting a circular economy.
Carbon Fiber Reinforced Plastics (CFRP) offer high lightweight potential, particularly for dynamic machine components due to their strength-to-weight ratio and low thermal expansion. However, integrating CFRP into stressed interfaces, such as tool spindles, poses challenges like anisotropic properties and tribological complexity. This study presents a multi-level approach to investigate and transfer tribological parameters in CFRP systems. Using the hierarchical product component test pyramid, it bridges product, structure and meterial levels, e.g. through simplified block-on-plate, as well as block-on-tube tests. Through abstracted and application-oriented test setups, key influencing factors can be identified and analyzed. The hierarchical test pyramid allows for stepwise knowledge transfer between abstraction levels, reducing testing effort without sacrificing relevant information.
There is a need for design of synthetic organs due to the high demand of organ replacements for patients and low availability of alternatives. Recent advancements in additive manufacturing are enabling the creation of biomimetic organs with biocompatible materials suitable for use in the body. Here, we consider a design, build, test approach for creating synthetic blood vessel tubules by comparing fused deposition modelling and stereolithography printing processes. Tubules were printed with vessel diameters from 10 mm to 20 mm and wall thicknesses of 1 mm to 2.5 mm. Mechanical testing results demonstrated high elongation of tubules prior to breaking. Results highlight the possibility for designers to create flexible biomimetic structures to aid biomedical applications, which opens the doors for new types of patient treatments in organ repair and transplantation.
Digitalisation has given rise to concerns about the future effectiveness of older adult grassroots organisations in enabling group-based participation in later life. Despite this, these organisations and their potential role in securing a just digital transition has featured in neither research debates nor policy and innovation agendas. It is essential that this absence is addressed to ensure future citizenship rights across civic, social and political spheres within digitalising ageing societies. The aim of this article is to explore the impact of digital transformations on the capacity of older adult grassroots organisations to support group-based multifaceted engagement in later life. Focusing on an Irish national voluntary membership-based organisation, and its network of local groups, this analysis draws on data from a multi-level mixed-methods study design. Data collection involved: European expert interviews (n = 4); social media analysis (X); organisational-level interviews (n = 11); an older adult member survey (n = 464); follow-up lifecourse interviews (n = 40); and a Translational Forum involving participants from all research strands to validate findings and agree key messages (n = 13). The analysis demonstrates the transitional nature of digital communication for these groups, and the need to and difficulties in addressing the diverse preferences and digital literacies of grassroots membership. The analysis also shows that the most significant challenges are systemic and structural in nature. An assets-based, capability-orientated approach that is supported by state-level leadership and resourcing is required to equip ageing societies for an equitable digital transition.
Glyphosate-resistant (GR) Italian ryegrass is one of the most troublesome weeds of rice in Mississippi. The most effective and economical management strategy to control GR Italian ryegrass is with preemergence (PRE) followed by postemergence (POST) herbicide programs. Two separate field studies were conducted in 2021–22 and 2022–23 in Stoneville, Mississippi, to evaluate GR Italian ryegrass control with fall-applied residual herbicide mixtures (Herbicide Mixture Study) and sequential PRE followed by POST herbicide programs with multiple applications of residual herbicides (Sequential Herbicide Application Study). In the Herbicide Mixture Study, dimethenamid-P, pyroxasulfone, and S-metolachlor alone provided ≥ 94% control of GR Italian ryegrass 21 d after treatment (DAT). The addition of flumioxazin to dimethenamid-P, pyroxasulfone, and S-metolachlor did not improve control 130 DAT. In the Sequential Herbicide Application Study, treatments with fall-applied dimethenamid-P performed better than those with acetochlor, except when fall-applied acetochlor was followed by a sequential application of clethodim plus S-metolachlor. Fall-applied residual herbicides are a necessary component of programs for control of GR Italian ryegrass in Mississippi.