Design Stage Research Articles

Expanding a Behavioral View on Digital Health Access: Drivers and Strategies to Promote Equity.

The potential and threat of digital tools to achieve health equity has been highlighted for over a decade, but the success of achieving equitable access to health technologies remains challenging. Our paper addresses renewed concerns regarding equity in digital health access that were deepened during the COVID-19 pandemic. Our viewpoint is that (1) digital health tools have the potential to improve health equity if equitable access is achieved, and (2) improving access and equity in digital health can be strengthened by considering behavioral science-based strategies embedded in all phases of tool development. Using behavioral, equity, and access frameworks allowed for a unique and comprehensive exploration of current drivers of digital health inequities. This paper aims to present a compilation of strategies that can potentially have an actionable impact on digital health equity. Multilevel factors drive unequal access, so strategies require action from tool developers, individual delivery agents, organizations, and systems to effect change. Strategies were shaped with a behavioral medicine focus as the field has a unique role in improving digital health access; arguably, all digital tools require the user (individual, provider, and health system) to change behavior by engaging with the technology to generate impact. This paper presents a model that emphasizes using multilevel strategies across design, delivery, dissemination, and sustainment stages to advance digital health access and foster health equity.

A Prototype Design of a Vertical Axis Wind Turbine as One of the Renewable Energy Sources in Brunei

Background: According to the Asia Wind Energy Association, Brunei can harness the power of wind energy to meet its future demands for a reliable energy source that is both renewable and non-polluting. Objective: A preliminary study to design and manufacture wind turbines needs to be initiated earlier especially in the Brunei with has potential wind energy. Methods: This preliminary study compares several Vertical Axis Wind Turbine (VAWT) types and examines the optimal design in terms of mechanical parts for wind speed characteristics in Brunei. The project focuses on the engineering design stages to obtain a selected design that differs from other available designs. Results: The preliminary study successfully generated a small amount of electricity from the mechanical rotation of the VAWT. Conclusion: Although the preliminary study can generate a small amount of electricity, several design parameters need to be improved in further study. Proper manufacturing technologies are also needed to fabricate a better VAWT.

Design of High-Reliability Low-Dropout Regulator Combined with Silicon Controlled Rectifier-Based Electrostatic Discharge Protection Circuit Using Dynamic Dual Buffer

Overshoot and undershoot caused by the current load impact the accuracy of the required output voltage and circuit performance. The transient response issue in existing low-dropout (LDO) regulators is a dynamic specification that must be addressed at the design stage. This transient response is influenced by system parameters such as stability and gain. The LDO regulator suggested in this study is designed to minimize the change in output voltage by considerably enhancing the gain using a dynamic dual buffer structure. A dynamic dual buffer is utilized to effectively control undershoot and overshoot. Under the conditions that the input voltage range is from 3.3 to 4.5 V, the maximum load current is 300 mA, the output voltage is 3 V, and the output of the proposed LDO regulator with the dynamic dual buffer structure has undershoot and overshoot voltages of 41 mV and 31 mV, respectively. That is, the output voltage of the proposed LDO regulator effectively provided and discharged an additional current suited for the undershoot/overshoot conditions to enhance the transient response characteristics. Furthermore, the electrostatic discharge (ESD) robustness characteristics of the proposed LDO regulator improved because of the silicon-controlled rectifier underlying the ESD protection device embedded in the output node and power line.

Three approaches to interviews: tell me about you, them, “fictitious” others

Purpose The purpose of this paper is to examine different approaches to framing interviews from the planning stage of interview design, drawing on Goffman’s (1974) notion of frame analysis. Design/methodology/approach Reflecting on previous studies the author has been involved with, in the context of accountability, three approaches to framing interviews are presented and discussed. Findings Framing interviews around the experience of interviewees, peers or fictitious yet familiar others provides three pathways to access interviewees’ insights, perspectives, knowledge and experience on issues relevant and familiar to them. Research limitations/implications The approaches to framing interviews detailed in the paper provide valuable alternatives to access interviewees’ personal insights based on their worlds and worldviews. Originality/value Consideration of interviews on accountability through the use of framing and frame analysis provides novel, strategic perspectives on interview design.

Exploring Systems Thinking and Systemic Design: Insights from a Summer School Experiment Addressing Urban Health Crises

This paper relates urban healthcare crises to the global challenges of overshoot and collapse and suggests systems thinking as an innovative approach towards addressing these amalgamated crisis situations. We begin by reviewing what systems are and how they are structured and behave, highlighting how systems thinking can identify high-leverage interventions and systemic design to achieve effective change. Subsequently, we illustrate how these system concepts were applied in an international, multidisciplinary summer school between European and Southeast Asian partners in collaboration with the World Health Organization’s (WHO) Technical Science for Health Network (Téchne). Examining how ventilation, temperature, humidity, and daylighting control strategies enhance Infection Prevention and Control (IPC), the initiative developed ideas and designs for a multiple disease treatment center that would provide isolation units and create a safe care environment for patients, families, and communities. The design process was informed through consultation with three physically and socio-economically diverse neighborhoods across the Bangkok Metropolitan Region to gain a richer understanding of the varied experiences and approaches in managing the COVID-19 disruption. Leveraging WHO guidelines, students adopted a systemic design approach to develop innovative solutions that could withstand natural hazards and used local materials and natural ventilation to prevent airborne infection and control indoor temperature. In conclusion, we propose a novel working model linking specific stages of systemic thinking and systemic design into a generalized, iterative urban and healthcare design framework that will be further refined as part of specific electives at the KU Leuven Faculty of Architecture and joint summer schools in 2023, 2024 and beyond.

Systematic literature review of BIM application in the whole life cycle of green building projects

ABSTRACT Building information modelling (BIM), as an effective digital method of information representation in the field of construction engineering, helps to deal with a series of works including design optimization, construction planning, and facility management. BIM enhances sustainability through energy simulations, material selection, waste reduction, and energy monitoring. However, challenges like talent shortage, interoperability issues, data management, and lack of standardization hinder its widespread use. Current research lacks systematic exploration of BIM's application in green buildings' life cycle, limiting further development. To fill this research gap, this study aims to provide a systematic review of the application of BIM in the design, construction and operation stages of the whole life cycle of green buildings. As a guideline to conduct this research, the preferred reporting items for systematic reviews and meta-analyses (PRISMA) model are used to identify the main procedures for literature screening and review. Through the systematic review, the main applications of BIM technology in green buildings are summarized, while the challenges in the current applications and the corresponding solutions are discussed. Finally, the study proposes key points for the future development of BIM to help the construction industry truly realize the development of man and nature and harmony and greenery.

Developing a game design framework to embed student-centred learning

PurposeThis paper presents the student-centred experience (SCE) game design framework, which aims to guide the design of holistic student-centred digital game-based learning (SCDGBL) experiences, which fully integrate all seven tenets of student-centred learning (SCL). The paper also rationalises the need for the framework and presents the steps taken in its development.Design/methodology/approachInitially, the background areas of SCDGBL and digital game-based learning (DGBL) are examined, and the need for a framework in digital educational game design that has a focus on SCL is then established. The rigorous and systematic design thinking process through which the framework was developed is then stepped through. The completed framework is then presented, and each section is detailed to explain its utilisation within the process of digital game design.FindingsThe paper presents the completed student-centred experience (SCE) framework alongside a worked example of how it can be deployed in practice. Also included is guidance on the roles of the game designer and education practitioner at all stages of design, development and deployment and how they may contribute their experience during the game design process to create high-quality tools for learning.Research limitations/implicationsWhile the SCE framework presented is complete, it is presented as a first version and will benefit from wider deployment and testing.Originality/valueThis paper presents a new game design framework integrating existing knowledge on SCL and DGBL, which guides practitioners in the design of experiences that fully deliver the techniques of both areas.

Chemical Structure and Thermal Properties versus Accelerated Aging of Bio-Based Poly(ether-urethanes) with Modified Hard Segments

Aging of polymers is a natural process that occurs during their usage and storage. Predicting the lifetime of polymers is a crucial aspect that should be considered at the design stage. In this paper, a series of bio-based thermoplastic poly(ether-urethane) elastomers (bio-TPUs) with modified hard segments were synthesized and investigated to understand the structural and property changes triggered by accelerated aging. The bio-TPUs were synthesized at an equimolar ratio of reagents using the prepolymer method with the use of bio-based poly(trimethylene ether) glycol, bio-based 1,3-propanediol, and hexamethylene diisocyanate or hexamethylene diisocyanate/partially bio-based diisocyanate mixtures. The polymerization reaction was catalyzed by dibutyltin dilaurate (DBTDL). The structural and property changes after accelerated aging under thermal and hydrothermal conditions were determined using Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and dynamic mechanical thermal analysis (DMTA). Among other findings, it was observed that both the reference and aged bio-TPUs decomposed in two main stages and exhibited thermal stability up to approximately 300 °C. Based on the research conducted, it was found that accelerated aging impacts the supramolecular structure of TPUs.

Development of Integrated Smart Apps Creator Media with Guided Inquiry Learning Model on Reaction Rate Material

This research is about developing Smart Apps Creator media integrated with a guided inquiry learning model on reaction rate material. The type of research carried out is Research and Development or what is known as Research and Development (R&D). The aim of this research is to develop learning media using Smart Apps Creator which is integrated with a guided inquiry learning model on reaction rate material, as well as getting validation from experts regarding this media and knowing the responses of teachers and students to its use. The development model used in this research is the 4-D model. The stages of 4-D development are the stages of definition, design, development and dissemination. This research produces smart apps Creator learning media that is integrated with the guided inquiry learning model on reaction rate material. The results of the media expert validation assessment obtained an average of 89.6% (very valid). The results of the teacher response assessment obtained an average of 89.5% (very practical) and the results of the student response assessment obtained an average of 82.2% (very practical).

Development of Website-Based Interactive Multimedia on Cell Material to Improve Critical Thinking Skills and Learning Independence of Class XI High School Students

The challenges faced in teaching cell material in high school show the need for innovation in learning media to facilitate understanding and increase students' learning motivation. This study aims to develop website-based interactive multimedia on cell material and evaluate the media's feasibility, practicality, and effectiveness in improving critical thinking skills (CTS) and learning independence of grade XI students of SMAN 1 Ngemplak. This type of research is research and development (R D) using the ADDIE model by Dick and Carey, including the stages of analysis, design, development, implementation, and evaluation. Field trials were conducted by a quasi-experimental method using a non-equivalent control-group pretest-posttest design. 62 students from two classes XI of SMA Negeri 1 Ngemplak became field trial subjects, divided into control classes (31 students) and experimental classes (31 students) by applying cluster random sampling techniques. Data on CTS and learning independence were measured using test and non-test techniques and then analyzed using t-tests. The results showed that: 1) website-based interactive multimedia is feasible to be used in the learning process, 2) website-based interactive multimedia is practical to use in the learning process, and 3) website-based interactive multimedia is effective in improving students' CTS and learning independence

COMBINATION OF MACRAME AND ECO POUNDING WITH COCONUT FIBER DYEING FOR LAMP SHADE

This design is motivated by the use of coconut fiber, which in general the community uses it as fuel and is considered a disturbing waste and causes buildup as coconut production increases. Technological developments and public awareness to return to natural materials will make coconut coir used as a natural dye for fibers (cloth or rope). The use of natural coconut fiber dyes is not widely known even though it has considerable potential to be developed and has a high selling value. The design method used in this design uses the theory of S.P Gustami which consists of 3 stages: namely exploration, design, and embodiment of the work. The exploration stage includes extracting sources of ideas about macrame, eco pounding, lamps and coconut coir. The design stage includes the selection of materials, techniques, and the visual form of the work. The final stage is the embodiment of the work. The final result of this design is in the form of six alternative designs, one of which was chosen to be realized. The realization of the work is in the form of a decorative lampshade on the table which has a function not only as lighting, but also as a decorative element and can beautify a room. This lampshade is presented by applying a combination of macrame and eco pounding techniques which are the novelty of this product. The use of natural coconut coir dyes is one way to preserve the environment.

Preclinical study and parallel phase II trial evaluating antisense STAT3 oligonucleotide and checkpoint blockade for advanced pancreatic, non-small cell lung cancer and mismatch repair-deficient colorectal cancer

ObjectiveTo evaluate signal transducer and activator of transcription 3 (STAT3) inhibition we conducted a co-clinical trial testing danvatirsen, a STAT3 antisense oligonucleotide (ASO) and checkpoint inhibition in conjunction with preclinical...

Power factor preregulation in power supplies using modified single stage non-isolated interleaved Sepic converter with minimal part count

This paper pontificates on design and realization of low-cost single phase single stage modified interleaved Sepic (MILS) converter for power supplies. On contrary to the classical Sepic power converters, the introduced active power factor correction (APFC) converter involves simple idea of paralleling that enables low input and output ripples with minimal device count. The interleaving conceptualization also lessens current stresses and static losses. Also, this modified power processing converter reveals natural power factor correction (PFC) and zero current switching (ZCS) features by discontinuous conduction mode (DCM) operation. Furthermore, the practical corroboration of the proposed converter is built and tested for 250 W hardware model to affirm benefits with 92 % efficiency and their relevant outcomes are reported in this scope. Finally, the power quality (PQ) attributes like, input power factor (PF), total harmonic distortion (THD) over input current under stable and transient cases are disclosed to prove bettered PQ limits at the AC mains as prescribed by various IEEE-519 and IEC 61,000–3-2 standards.

Improved control strategy and designed control parameters of pitch system for wind turbine considering blade load reduction

As wind turbines increase in the power, the longer the blade, the more severe the blade load. Traditional control strategies and control parameters do not consider to reduce blade load, which seriously threatens the safe operation of wind turbines. Therefore, this study proposes a pitch control strategy based on blade active damping control and a multistage control parameter design method. Firstly, this study proposes a pitch control strategy based on blade active damping control to reduce the blade load based on the establishment of a mathematical model of the pitch system considering the blade load and a dynamic model of blade active damping control. Secondly, in the control parameter initial values design of Stage Ⅰ, this study proposes a variable forgetting factor recursive least squares to identify a simplified mathematical model of the pitch system and a Low–overshoot Chien–Hrones–Reswisk to solve the proportional integral control parameter initial values. Thirdly, in the control parameter optimal values design of Stage Ⅱ, this study proposes an adaptive genetic algorithm with improved hyperbolic tangent function to optimize control parameter at the equilibrium points and proposes an adaptive control to calculate control parameter at the non–equilibrium points. Finally, based on the Bladed software for 2 MW and 5 MW wind turbines, the superiority of the proposed methods, effectiveness and applicability in improving the control accuracy of the output power and generator speed, and reducing the load situation at the blade root position are verified.

Designing a Simple Microscope as an Alternative Learning Media with SolidWorks Software

Microscopes are essential as media or teaching aids for prospective educators to achieve learning goals. However, there are still obstacles in their application in the form of quite expensive costs. Often, educational aids have a sizeable nominal value for a school. Teaching aids are costly and prone to damage or loss if students use them frequently, and it is difficult and expensive to find replacements if they are damaged, so teachers are afraid to use them. To overcome this problem, this study provides another alternative design, namely the design of teaching aids that are still useful and function well for learning through the design of microscope teaching aids. The research method used is a model research design using Solidworks software. The development of learning tools compiled in this study refers to the type of 4-D development (Four-D model), which consists of 4 stages: the define stage, the design stage, the development stage, and the dissemination. The research carried out three stages, namely the definition stage (Define), the design stage (Design), and the development stage (Develop). In the results of the design draft, questions were asked of the informants; it was concluded that a proper microscope was a microscope that worked according to its specifications, namely being able to see tiny or micro-objects. The clarity of the lens and the maximum magnification are also factors in the feasibility of the microscope. This research can be concluded as a simple microscope design using the Solidworks application, which is suitable for use as an alternative learning media. If the design of this tool is to be made, then the selection of materials and mechanisms needs further research and trials.

Development of Instrument Soft Skill Assessment in Problem-Based Learning to Improve Students' Collaboration Skills, Communication Skills, and Social Skills

The research aims to produce the instrument soft skill assessment in problem-based learning that are valid, practical, and effective in assessing students' collaboration, communication, and social skills. This research uses the 4-D development model consisting of four stages: define, design, develop, and disseminate. At the define stage, a preliminary study is carried out in the form of a needs analysis and literature study, then the formulation of objectives. At the design stage, product determination is carried out, product design is created and the instrument soft skills assessment is designed. At the development stage, initial field tests are carried out in the form of expert validation, product revisions, main field tests to obtain data on the practicality and effectiveness of the product, then the final product is obtained. At the disseminate stage, product distribution was carried out on a large scale, but this research only reached the development stage due to limited research time. The research sample consists of tenth-grade students at SMA N 1 Padang Cermin, Lampung. Data collection techniques include methods such as self assessment questionnaires and documentation. Data analysis employs qualitative analysis with descriptive percentage for expert practitioner validation, effectiveness, and quantitative analysis using SPSS for effectiveness. The results of this study indicate that the instrument soft skill assessment in problem-based learning to improve students' collaboration, communication, and social skills in high schools are developed with theoretical, practical, and effective feasibility.

Adopting a systems engineering approach to a feasibility study of a sidings development at the Midsomer Norton railway station

It is planned to reopen Midsomer Norton railway station, which is a station on the Somerset & Dorset Heritage Railway Line, to traffic. As a first step, Midsomer Norton will be a terminus, and it is proposed to build sidings and a depot for the trains that terminate there. However, a ground investigation is essential before commencing construction of the sidings and the depot, as this is a vital part of any civil engineering process. The behaviour of the ground must be known in order for a structure to be supported by it; therefore, data from the ground investigation are used as reference for any kind of structure development. This study covers a site investigation that includes a desk study, walkover survey, sampling and laboratory testing in order to ascertain the feasibility of a suitable design. Moisture content testing, liquid limit and plastic limit tests, standard compaction testing, shear vane tests, and triaxial compression tests were carried out to determine the soil characteristics and to analyse the soil behaviour. A strong recommendation was made to follow a systems engineering approach in the construction phase, as well as in the design stage. The dependability of the system is ensured by the good use of V – process of systems engineering.

Want to try a registered report? Here are our lessons learned.

A Registered Report is a type of research journal article in which the introduction, methods, and analysis plan are proposed and peer-reviewed prior to the execution of the study. The goal is to limit publication bias based on study findings by conducting peer review on the merits of the study before the results are known. First introduced in 2012 (Chambers, 2013; Chambers & Tzavella, 2022), this format of journal article publication has become more commonplace. Here we provide an overview of the format as well as eight core lessons we learned while preparing Registered Reports. We integrate guidelines from the literature with our experience to provide insight into the process of preparing and publishing a Registered Report for those who have not yet tried it. Though Registered Reports require researchers to invest more effort at the earlier stages of idea generation, design, and analysis planning, they will benefit from the feedback of reviewers when it is most beneficial and leave behind the fear of rejection due to unanticipated study limitations or null results. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Stepping Together with Nature of Malang Raya: The Development Environmental Changes E-Book Based on Problem Based Learning (PBL)

The development of teaching materials that are integrated with local wisdom is needed as a teaching tool to support learning using the Merdeka curriculum. To practice some of these skills, teaching materials are needed that support the application of the Merdeka curriculum for learning activities. This research aims to determine the theoretical feasibility of teaching materials in the form of environmental change e-books based on problem based learning integrated with local wisdom in Malang Raya. This research uses the ADDIE model with analysis, design, development, implementation and evaluation stages. Data was obtained from validation results by two biology lecturers and readability tests. The environmental change e-book developed has very valid criteria. The validation results are based on aspects of presentation, content, suitability of problem based learning steps. E-book readability test at level 11 or according to the level of thinking of class X high school students which is categorized as very positive and appropriate. So, it is concluded that the environmental change e-book based on problem based learning integrated with Malang Raya local wisdom is very suitable to be applied in the learning of class X high school students.

Nacelle optimisation through multi-fidelity neural networks

Purpose Aerodynamic shape optimisation is a complex problem usually governed by transonic non-linear aerodynamics, a high dimensional design space and high computational cost. Consequently, the use of a numerical simulation approach can become prohibitive for some applications. This paper aims to propose a computationally efficient multi-fidelity method for the optimisation of two-dimensional axisymmetric aero-engine nacelles. Design/methodology/approach The nacelle optimisation approach combines a gradient-free algorithm with a multi-fidelity surrogate model. Machine learning based on artificial neural networks (ANN) is used as the modelling technique because of its ability to handle non-linear behaviour. The multi-fidelity method combines Reynolds-averaged Navier Stokes and Euler CFD calculations as high- and low-fidelity, respectively. Findings Ratios of low- and high-fidelity training samples to degrees of freedom of nLF/nDOFs = 50 and nHF/nDOFs = 12.5 provided a surrogate model with a root mean squared error less than 5% and a similar convergence to the optimal design space when compared with the equivalent CFD-in-the-loop optimisation. Similar nacelle geometries and aerodynamic flow topologies were obtained for down-selected designs with a reduction of 92% in the computational cost. This highlights the potential benefits of this multi-fidelity approach for aerodynamic optimisation within a preliminary design stage. Originality/value The application of a multi-fidelity technique based on ANN to the aerodynamic shape optimisation problem of isolated nacelles is the key novelty of this work. The multi-fidelity aspect of the method advances current practices based on single-fidelity surrogate models and offers further reductions in computational cost to meet industrial design timescales. Additionally, guidelines in terms of low- and high-fidelity sample sizes relative to the number of design variables have been established.