Design Practice Research Articles

Experimental study on direct shear resistance of horizontal grouted joints in PC shear walls under compression and in-plane bending moment

The upper and lower panels of the prefabricated concrete shear wall are usually connected via horizontal grouted joints to maintain structural integrity. The horizontal grouted joints are typically under compression and in-plane bending moment. In the current design practice, it is generally considered that the direct shear resistance of the horizontal grouted joint is identical to that of the new-old concrete joint, and not affected by the bending moment if no bending failure occurs. In fact, as far as the authors know, both considerations lack experimental evidences. In this study, eight horizontal joint specimens were tested, including four grouted joints and four new-old concrete joints, to investigate their direct shear performances under constant compression and different in-plane eccentricities. Test results indicated that the ultimate direct shear resistance of the grouted joints was averagely 15.9 % lower than that of the new-old concrete joints. For the joints under small eccentricities associated with full shear plane in compression, the ultimate direct shear resistances remained unchanged compared to the cases under no eccentricity. However, for the grouted joints under large eccentricities associated with partial shear plane in tension, the ultimate direct shear resistances reduced up to 27.8 % compared to the grouted joint under no eccentricity. In addition, the shear transfer mechanism was investigated with the aid of the extended shear-friction model. Finally, recommendations were proposed for direct shear design of the horizontal grouted joints.

The strength of complex compressed reinforced concrete structures utilising hollow concrete blocks

Structures in which elements from different materials work together are successfully used in various combinations. Recently, new, effective construction materials and products have appeared. In complex or multi-component structures, elements made of materials with different physico-chemical or strain-strength characteristics should be sensibly combined for joint work. The more fully the properties of the components’ materials are utilised, the more efficient the design itself is. By analysing global practice, it can be seen that small concrete blocks have become widespread. The use of masonry made of hollow concrete blocks in modern construction differs from traditional ones in that the void area (up to 70%) makes it possible to create complex high-strength load-bearing structures by filling them with monolithic reinforced concrete. This also enables speeding up the construction process itself and reducing the cost of work on the construction site. The purpose of the study was to examine the strength of centrally compressed columns composed of hollow blocks and concrete filling with different transverse and longitudinal reinforcements, as well as to improve their calculation methodology. Experimental studies of centrally compressed columns, with different percentages of reinforcement using hollow concrete blocks as permanent formwork, have been carried out. The article presents the results of the research on strength, but the results of the strain studies were not included in this work. The proposed method of calculating complex constructions can be applied in design practice. A good correlation was observed between the experimental results and the results of the analytical model.

On the spectral wave climate of the French Atlantic Ocean

The accurate description of wave climate at different spatio-temporal scales requires the application of advanced statistical models together with a good knowledge of geophysical processes. Furthermore, accurate modelling of multimodal sea states is of primary importance for most of offshore and coastal activities, such as wave energy device optimization, maritime design practice and for safety at sea. The present manuscript is conceived within this scientific framework proposing to assess wave climate of a complex area of French Atlantic Ocean bordering seas. The main “Spectral Climatology Types” of the area are identified as resulting of defined combinations of wave systems detected through directional spectra and partitioned wave systems analysis. The presence of swell systems is evaluated quantitatively on the whole area, characterized by different regimes of multimodal sea-states at strong regional variability and put into relation with main meteorological forcing active on the area at different spatial scales. Celtic Sea exhibits a marked regional characterization with a prevalence of multimodal conditions given by different combination of wave systems with increasing contribution of swell systems moving from North-West to South. A significant presence of crossing sea states is observed in South Celtic Sea especially in proximity of bathymetric slope. The South Bay of Biscay is influenced by fully developed swell systems enhanced by refraction effects caused by both the coastline and bathymetry gradients. English Channel and North Sea show complex sea-states conditions induced by local topography features together with wind channelling and tide effects able to trigger geophysical processes at a sub-scale responsible for the development of multimodal seas. Crossing and bimodal seas are also found to be influenced by bathymetry gradients acting directly on the directional spectrum shape as well as by tide due to tidal current-induced refraction effect on wave propagation. No generalized significant trends are detected within the investigated spatial domain for the wave spectrum integral quantities; locations sited at northern Celtic Sea show a downward Significant Wave Height, while only locations confined at eastern English Chanel only shows a Peak Period upward trend.

Core competency oriented problem-solving teaching ----Taking "Solving Application Problems with a System of Equations" as an Example

The teaching of Mathematical problem-solving is one of the three key teaching points in junior high school mathematics. Solving applied problems through equations (systems) is an important component of the first module of teaching content, "Numbers and Algebra", and holds a very important position. It is a key focus in junior high school mathematics problem-solving teaching. At present, under the premise of the implementation of the new curriculum reform in the field of mathematics in China, based on the recent publication of compulsory education curriculum standards,the teachers of mathematics should focus on cultivating excellent mathematical core literacy among junior high school students, and ensuring that they can independently cope with and solve problems in  the math teaching of junior high school.   Based on the above background, the author focuses on the newly published mathematics curriculum standards in 2022, and studies the teaching design of "solving application problems for systems of equations". In this paper, we explore the mathematical core literacy elements contained in the teaching of solving applied problems in equations, study the improvement path of mathematical problem-solving teaching, share the teaching design practice and thinking based on core literacy oriented problem-solving teaching, and the important role that this teaching design can play in cultivating students' core literacy .

An Updated Perspective of the Impact of the 1940 Vrancea Earthquake on Design and Construction Practices in Romania

An Updated Perspective of the Impact of the 1940 Vrancea Earthquake on Design and Construction Practices in Romania

Design and Engineering Practices of National Fundamental Geo-entity Relationship

National fundamental geo-entity construction has been vigorously promoted by the Ministry of Natural Resources of the People's Republic of China. As one of the core contents, national fundamental geo-entity relationship faces new requirements of richer content, more intelligent construction, more flexible association, more intuitive expression, and more efficient application. This paper analyzes the existing entity relationship types, defines the content of national fundamental geo-entity relationship, compiles the geo-entity relationship construction table, establishes a practical and feasible process for geo-entity relationship construction through engineering practices. The first batch of national fundamental geo-entity relationship products show that the production process described in this paper can quickly and effectively achieve the construction of national fundamental geo-entity relationship that are rich in content and convenient to apply. It has certain reference and promotion practical in the construction and integration of multi-scale geo-entity relationship at the national, provincial and municipal levels.

"The Headline Was So Wild That I Had To Check": An Exploration of Women's Encounters With Health Misinformation on Social Media

Misinformation has emerged as a significant threat to public health in recent years and has been observed across numerous health issues, the most prolific being COVID-19. Though increasing attention has been paid to women's health within the social scientific and HCI communities, very little research has holistically explored the unique challenges women face when navigating health misinformation. To address this gap, we conducted a qualitative diary and interview study aimed at investigating women's perceptions and lived experiences of health misinformation on social media, and how they respond emotionally and behaviourally to health misinformation encountered in their day-to-day lives. We found that participants perceived health misinformation as ubiquitous and poorly-managed by social media platforms, resulting in a lack of trust in current moderation and fact-checking interventions. We also observed that encounters with misinformation triggered negative emotional responses, which participants attempted to navigate through ad-hoc strategies such as drawing on personal experience and reading social media comment sections, which facilitated collective sensemaking. We discuss our findings in relation to the design of targeted interventions which empower women to engage constructively with health information on social media. In particular, we underscore the importance of trust, accountability, and intersectionality in future design and research practice, and encourage a holistic view of how women are impacted by misinformation.

On Being an Expert: Habitus as a Lens for Understanding Privacy Expertise

How do privacy experts and lay persons differ? We investigate this question using data about the use of privacy-enhancing technologies and strategies from 128 surveys and 17 follow-up interviews with two populations: privacy experts (i.e., privacy researchers and professionals) and privacy laypersons. Findings reveal that both experts and laypersons use common privacy strategies, but experts employ a broader range of strategies, favor open source technologies, and possess a more technical understanding of internet privacy risks and technologies such as onion routing and tracking algorithms. We characterize these differences in terms of sociological habitus, where experts and laypersons differ not only in technical skill but also in broader conceptualizations and practices. From this characterization, we make recommendations for technology design practices, as well as legal and pedagogical implications, that can help decenter the experiences of privacy experts and accommodate privacy laypersons' preferences and habits.

Navigating the Gray: Design Practitioners' Perceptions Toward the Implementation of Privacy Dark Patterns

Designers are sometimes accused of using deceptive methods to manipulate users' information privacy decisions through "privacy dark patterns." Through semi-structured interviews, we explore the perceptions of 23 design practitioners towards the implementation of "privacy dark patterns" created by other designers. This paper explores designers' perceived responsibilities toward users' privacy and their interpretations of the reasons behind the design implementation. We found a range of empathetic rationales among our participants toward other designers' intentions. An example theme is Designer Followed the Status Quo, where common and widely used privacy interfaces are normalized a practice that is typically viewed as reasonable. Our participants' interpretations of the design intent influenced their self-reported practices for navigating similar design requests. We propose a set of factors that influence privacy design practices, including following conventions and norms, ensuring legal compliance, reliance on established usability standards, perceived benefits to businesses and consumers, and degrees of privacy harm.

The Cultural Construction of the Domestic Space in France: Women’s Lived Experience and the Materialization of Customs

This article explores the intersecting processes of construction of the home, social, and individual identities through domestic practices inside French housing. It examines the design and occupation of French homes as crucial moments for the consolidation of subjectivities, beliefs, and ideologies manifested through daily actions that are influenced by normative cultural systems. In specific, it looks at codified domestic behaviours and their aesthetic dimension, focusing on how the French “art of living” has influenced taste, design, appropriation, and decoration of domestic interiors. Architectural treatises along with etiquette manuals are analysed as they both represent—through the written word and architectural drawings—cultural and gender stereotypes as well as societal norms and expectations that inform housing design and domestic practices. These documents directly assist in the cultural construction of the domestic space, uncovering mechanisms of reproduction and representation that inform the use and design of residential architecture. By focusing on women’s lived experiences, this research looks at the consolidation of feminine domestic cultures and how they fostered small-scale physical transformations of dwellings’ interiors through daily negotiations that define self-identity and interpersonal power relations. These dynamics are referred to as “cultural domesticity.” The latter frames this study along with feminist literature, situating women’s contribution to the aesthetic and spatial development of French apartments. What emerges from this study is that the French state historically exercised a regulatory power that impacted daily life and housing design.

Efficient Sizing and Layout Optimization of Truss Benchmark Structures Using ISRES Algorithm

This paper presents a comprehensive investigation into the application of the Improved Stochastic Ranking Evolution Strategy (ISRES) algorithm for the sizing and layout optimization of truss benchmark structures. Truss structures play a crucial role in engineering and architecture, and optimizing their designs can lead to more efficient and cost-effective solutions. The ISRES algorithm, known for its effectiveness in multi-objective optimization, is adapted for the single-objective optimization of truss designs with multiple design constraints. This study encompasses a wide range of truss benchmark structures, including 10-bar, 15-bar, 18-bar, 25-bar, and 72-bar configurations, each subjected to distinct loading conditions and stress constraints. The objective is to minimize the truss weight while ensuring stress and displacement limits are met. Through extensive experimentation, the ISRES algorithm demonstrates its ability to efficiently explore the solution space and converge to optimal solutions for each truss benchmark structure. The algorithm effectively handles the complexity of the problems, which involve numerous design variables, stress constraints, and nodal displacement limits. A comparative analysis is conducted to assess the performance of the ISRES algorithm against other state-of-the-art optimization methods reported in the literature. The comparison evaluates the quality of the solutions and the computational efficiency of each method. Furthermore, the optimized truss designs are subjected to finite element analysis to validate their structural integrity and stability. The verification process confirms that the designs adhere to the imposed constraints, ensuring the safety and reliability of the final truss configurations. The results of this study demonstrate the efficacy of the ISRES algorithm in providing practical and reliable solutions for the sizing and layout optimization of truss benchmark structures. The algorithm’s competitive performance and robustness make it a valuable tool for structural engineers and designers, offering a versatile and powerful approach for complex engineering optimization tasks. Overall, the findings contribute to the advancement of optimization techniques in structural engineering, promoting the development of more efficient and cost-effective truss designs for a wide range of engineering and architectural applications. The study’s insights empower practitioners to make informed decisions in selecting appropriate optimization strategies for complex truss-design scenarios, fostering advancements in structural engineering and sustainable design practices.

The Role of Environmentally Responsible Interior Design in Healthcare for Enhanced Patient Well-being

While the healthcare industry is struggling with environmental impacts, it is also trying to bring together holistic design practices to create sustainable, patient-centered and ecologically responsible, energy-efficient healthcare areas. With the increase in studies focusing on the positive effects of the ecological design approach on the well-being and recovery processes of patients, the integration of green elements into healthcare structures becomes even more important. Integration of environmentally responsible design (ERD) principles into hospital interior design; It contributes significantly to reducing carbon emissions, resource consumption and environmental waste. At the same time; by optimizing energy-efficient systems, adopting sustainable materials, and creating patient-centered healing spaces by utilizing natural light and natural ventilation, it can be both contributed to the treatment process and reduce carbon footprints. This study proposes a new approach that integrates ERD elements with healthcare interior design. Recognizing that the built environment and human health are interconnected, the research examines innovative design strategies to promote healing through environmentally responsible interior design (ERID). The focus of this approach is on combining ERD strategies such as healing design, patient-centered design, evidence-based design and the use of sustainable materials, daylight, natural ventilation, energy-efficient design, sustainable design, biophilic design. As a result of this integration, by drawing attention to the role that patient-centered green interior designs play in improving the health and well-being of patients and the efforts to minimize the negative effects of hospitals on the environment. Also, it is aimed to encourage the health and construction sectors in this sense and proposed a path towards a green future.

Advancing understanding of learning experience design: refining and clarifying definitions using an eDelphi study approach

AbstractWe report findings from an eDelphi study that aimed to explore 16 expert panelists’ perspectives regarding the key attributes of learning experience design (LXD) as it relates to the following: design, disciplines, methods, and theory. Findings suggest consensus was reached regarding LXD’s focus on learner-centrism and incorporating human-centered design practices to design learning environments. LXD practitioners adapt methods and theories from fields such as human–computer interaction and user experience. Implications suggest a need to develop specific methods and theories within our own field.

Strategies for Cultivating Cross-Cultural Awareness in High School English Reading Teaching under the Guidance of the New Curriculum

Due to the advent of the information age, English, an internationally spoken language, is playing an increasingly important role in international communication. Language is a carrier of culture, so strengthening the cultural integration into reading teaching can improve students' language ability. At the high school level, reading and culture are two important components of learning English and deserve to be emphasized. Based on the new standards for high school English, this paper analyzes the characteristics and shortcomings of the current intercultural awareness cultivation by combining the new textbook in New Standard English of Foreign Language Teaching and Research Press, teachers' teaching design and teaching practice. After elaborating the importance of intercultural awareness in high school English learning, this paper further proposes corresponding teaching countermeasures to help cultivate students' intercultural awareness, improve students' cultural confidence, and provide a reference for students' comprehensive quality of students is provided.

The Landscape of Tranquility in Sweden: Lessons for Urban Design from Crowdsourced Data and Deep Learning

Tranquility is typically associated with low noise levels and remote natural areas. Various methods for preserving potentially tranquil places have been proposed, although these typically involve setting aside places with low noise levels located in remote areas. To gain the benefits of tranquility in accessible urban areas, we need to identify the characteristics of tranquil spaces. This study focuses on the landscape-based, visual aspects of the phenomena. We investigated the role of visual context using a nationwide dataset of crowdsourced photographs from Sweden. Text mining identified personal perception and accompanying photographs identified the physical features. The photographs were characterized by time period and landscape conditions using computer vision technology. We found that waterbodies consistently enhanced tranquil views, while grass, flowers, and other dense vegetation were generally not well connected. Trees were positively correlated during daylight hours but had a negative impact at night. Dynamic objects such as people and vehicles were negatively associated, potentially due to aural considerations. Their effect was less significant during hours when noise would generally be less of a factor. This study provides insights for future research and design practices aimed at promoting tranquil experiences in urban environments and demonstrates the potential for crowdsourced data to help understand the qualities of built environments as perceived by the public.

Multidisciplinary Design Methodology for Micro-Gas-Turbines—Part I: Reduced Order Component Design and Modeling

Abstract Ultramicrogas turbines (UMGTs) for electric power generation up to 1 kW are a viable replacement technology for lithium batteries in drones due to their high energy density. Previous research has shown that small-scale effects disqualify conceptual design practices applied to larger gas turbines owing to highly coupled, nonlinear component interactions. To fill this gap, we propose an interdisciplinary conceptual design and analysis framework based on reduced order models. To this end, the current work is divided into two parts covering component design and system integration, analysis, and optimization. In Part I, automated conceptual design of all engine subcomponents is elaborated facilitating interdependent reduced order models for compressor, turbine, combustor and high-speed generator while also considering additive manufacturing constraints. In a second step, the reduced order performance models are compared to computational fluid dynamics (CFD) Reynolds-averaged-Navier–Stokes (RANS) simulations of various turbomachinery geometries as well as experimental data of combustor and high-speed generator prototypes, showing good agreement and thus validating the component modules. In conclusion, the first part of this work elaborates an automated and efficient method to conceptual design of all components required for a functional UMGT. Since the strategy is applicable independent of component arrangement and engine layout, the proposed methods offer a universal framework for small gas turbine generators.

Towards a definition of ‘empathic understanding’ in industrial design practice

Empathy is often not well defined, particularly in design. While the practice of designers developing a deep understanding of the people who use their products is recommended, the details of how to do this are limited. This problem of vagueness about empathy in design makes it difficult for product designers to take suitable actions to produce best results for the users. Through a strategic examination of a body of literature, across seven databases relevant to design, the systematic literature review adds to a discussion on empathy within the designing process. Study limitations included the complex nature of empathy itself, and multiple uses of the terms design and product. Findings indicate a contradiction of internal and external factors affecting empathy in design, and are considerably more complex than just an ‘accepted’ part of the design process. Shifting towards user-centred design in industrial design means that a considerably more nuanced understanding of empathy is needed, for implementation in design practice. By better understanding the concept of empathy as a duality, all stakeholders can manage expectations around empathy ‘behaviour’, and empathy as part of the design process. Empathy needs to be recognised as a complex phenomenological relationship between process (external) and person (internal) within industrial design. Practical, theoretical and societal implications of this concept are discussed.Transdisciplinary contribution: Empathy in product design practice represents several fields, related to human behaviour and interactions. This review’s contribution is to confirm areas for further research and the importance of developing theory to address the complexity of design practice.

Research on an innovative design and evaluation method of Chinese tea sets based on GT-AHP-FCE.

In order to explore new consumer demands for Chinese tea set products, propose an innovative tea set product design and evaluation method to improve the user experience and satisfaction of the produced tea sets, thereby promoting the development of the tea set market and the promotion of tea culture. Firstly, grounded theory (GT) was used to analyze interview data to extract consumer demand indicators and construct a design evaluation hierarchical model. Secondly, the Analytical Hierarchy Process (AHP) was used to calculate the weights of the indicators, determine their priority of importance, and obtain several indicators that have a greater impact on the tea set design to guide innovative design practice. Lastly, the tea set design schemes were evaluated using the fuzzy comprehensive evaluation method to select the optimal design scheme and also to act as a guideline for further design optimization. This study explores the innovative design and evaluation method for tea set products based on GT-AHP-FCE and validates the feasibility of this approach through a practical example of tea set design inspired by "The Classic of Mountains and Seas.". It provides innovative theoretical and practical guidance for designers of subsequent tea set products and also provides a new path for the inheritance and innovation of traditional culture.

The interrelationships between kitchen design and food practices for apartment dwellers in Melbourne, Australia: an exploratory study

ABSTRACT Apartment-living is on the increase, despite this, little is known about how it influences food practices. We explored the interrelations between apartment kitchen design and food practices using Photo elicited interviews and an inductive thematic analysis, with a diverse sample of twelve apartment-dwellers across four suburbs of Melbourne, Australia. Participants took 160 photographs representing their food practices to guide interviews. Three themes emerged from the interview analysis: ‘Choices’ which included participants’ cooking preferences, as well as their choice of apartment in which to prepare these meals; ‘Challenges’ which referred to the kitchen design barriers to home cooking including issues relating to storage, food preparation, washing up, ventilation, lighting and recycling and; ‘Changes’ which described the physical adaptations to kitchens and behavioural adaptations to food practices as a result of poor kitchen design. Based on these findings, using a socioecological framework, we describe the proximal and distal interrelationships between kitchen design and food practices; and discuss how these could be further researched to inform future apartment design policy.

Designing from experience: on the adoption of chatbot conversational design practices by practitioners

Designing from experience: on the adoption of chatbot conversational design practices by practitioners