Design of a Car Rental Application User Interface Using Design Thinking and Kansei Engineering Approaches

The user interface is an influential element in software applications. A well-designed user interface will potentially increase the usability of software applications. Therefore, user interface designers should deliberate when considering which approach and method to implement for designing user interfaces. Design thinking is currently a widely followed approach in user interface design practices. Hence, this study aimed to explore research trends and current practices of design thinking approach for user interface design. This study employed a systematic literature review following the Kitchenham method. This study found 39 articles deemed relevant to the design thinking approach. In general, our study found five common stages broadly mentioned in the articles, i.e., empathize, define, ideate, prototype, and test. The most widely practiced method during those five stages is interview, user persona, brainstorming, user interface, and usability testing. However, there is no consensus on what kind of stage(s) and which method(s) should be employed when following the design thinking approach for user interface design. Therefore, it will depend on the designer's decision in choosing which stage(s) and their related method(s) will be employed.

The application of digital technology in the worker health screening process is an important need in the industrial work environment, especially in supporting the effectiveness and efficiency of the OHS medical team's work. This research aims to design a user interface for the AppSheet-based worker health screening application using the Design Thinking approach. This method was chosen because it is centered on user needs and is able to produce innovative solutions through the stages of Empathize, Define, Ideate, Prototype, and Testing. Data collection was conducted through interviews and observations of five respondents from the OHS medical team and five department representatives. Assessment of the design was carried out using the usability testing method, with efficiency, effectiveness, and System Usability Scale (SUS) parameters. The results showed that the Design Thinking approach was able to produce an application interface that meets user needs, improves understanding of workflows, and minimizes recording errors. The developed application not only supports the digital health evaluation process, but also has the potential to reduce administrative burden and improve the quality of medical services at PT Petrokimia Gresik.

Informatics is one of the study programs at the private university of Amikom University Purwokerto which prioritizes learning on the development of Information Technology, but the problems faced vary such as the absence of a campus facility for discussion and community, difficulty in conveying the problems they face, especially related to assignments and materials presented by lecturers. The purpose of this study is to design a visual concept of user interface design and prototype flow design for the Chatting and Forum Discussion Forum application using the Design Thinking method. The method used involves iterative steps to understand user needs, build prototypes, and test the resulting solutions. In addition, the usability testing method is used to test the prototype results of the interface that has been created, with a focus on user experience. The final result of this study is a user interface and prototyping that have passed the testing stage according to usability testing standards, task completion testing using the SEQ (Single Ease Question) method on each task has an average task completion above 6. And the results of the SUS (System Usability Scale) method have a value of 88.3 meeting the SUS acceptable scoring aspect with a grade scale B which shows that the project created is easy to use. Successfully designed a visual design concept through user interface and user experience design of online discussion forum platform media using the Design Thinking method through the stages of Empathize, Define, Ideate, Prototype, and Testing.

Digital agriculture faces challenges, namely in integrating Elderly People (SENIORS) in digital transformation. The purpose of the study is to analyze and design UI/UX models according to user needs, expectations, and challenges. The method used is the Design Thinking approach which begins with literature study, then interviews are conducted to identify problems faced by users, and analyze the need to determine problem priorities. UI/UX prototypes are carried out to design solutions that suit user needs, and evaluations are carried out to collect user feedback. The data is assessed through the System Usability Scale (SUS) approach to appraise the designed user interface (UI). The evaluation results showed a "good" rating based on the SUS category, with a final average score of 74,391, so that the solutions designed meet usability standards for SENIORS users in the context of digital agriculture. Thus, the research carried out contributes to increasing the effectiveness and adoption of SENIORS in digital agriculture, as well as by designing user-friendly UI/UX models, making an important step towards inclusive and sustainable digital agriculture.

This research aims to create a User Interface (UI) and User Experience (UX) design so that people become easier to buy food at Culinary UMKMs using the Design Thinking method which has several stages, namely the Emphatize, Define, Ideate, Prototype, and Testing stages. The Design Thinking method is used to create solutions to solve problems felt by users. In conducting testing, the study used Usability Testing and tested 10 respondents who would provide an assessment through testing using the Single Ease Question which has a test result of 6.7 out of 7, and testing using the System Usability Scale which has a test result of 93 out of 100, which can be concluded that the UI / UX design of mobile-based food sales applications for MSMEs in the city of Manado can be used properly by respondents, and can provide solutions to existing problems.

Objectives: Dental caries is strongly associated with excessive dietary sugar intake, and although the Sweet Score is a validated assessment tool, its manual calculation is time-consuming and prone to reporting bias. This study aimed to develop and validate a user-friendly mobile application to automate Sweet Score calculation and facilitate dietary sugar monitoring using a structured design thinking approach. Methods: The Double Diamond design thinking framework was employed. During the discover phase, literature review and content analysis of existing dietary applications were conducted along with a need assessment involving 10 target users. In the define phase, expert and user inputs were synthesized to establish functional requirements, including bilingual support, visual aids, and oral health education modules. The develop phase involved building the application on Android Studio incorporating 24-hour dietary recall, automated Sweet Score computation, personalized dietary tips, oral hygiene modules, and support features. In the deliver phase, a minimum viable product was finalized and tested. Face and content validity were assessed by 10 experts and 10 users, while usability testing was performed using the System Usability Scale (SUS). Results: The mobile application demonstrated high validity, with scale content validity indices of 0.98 among experts and 0.96 among users. Usability testing yielded a high SUS score of 87.75, indicating excellent user satisfaction and acceptance. Users reported positive feedback regarding real-time dietary feedback, portion visualization features, and integrated oral health guidance. Conclusions: The validated Sweet Check application provides an efficient and user-friendly platform for dietary sugar assessment and oral health promotion. The tool shows potential for large-scale public health implementation and integration into national nutrition and oral health programs.

Background Mobile health (mHealth) apps can be used for cardiovascular disease (CVD) prevention. User-centered design, evidence-based content and user testing can be applied to ensure a high level of usability and adequate app access. Objective To develop and evaluate an mHealth app ( HerzFit ) for CVD prevention. Methods HerzFit ´s development included a user-centered design approach and guideline-based content creation based on the identified requirements of the target group. Beta testing and a preliminary usability evaluation of the HerzFit prototype were performed. For evaluation, German versions of the System Usability Scale (SUS) and the mHealth App Usability Questionnaire (GER-MAUQ) as well as free text feedback were applied. Results User-centered design thinking led to the definition of four personas. Based on their requirements, HerzFit enables users to individually assess, monitor, and optimize their cardiovascular risk profile. Users are also provided with a variety of evidence-based information on CVD and their risk factors. The user interface and system design followed the identified functional requirements. Beta-testers provided feedback on the structure and functionality and rated the usability of HerzFit ´s prototype as slightly above average both in SUS and GER-MAUQ rating. Participants positively noted the variety of functions and information presented in HerzFit , while negative feedback mostly concerned wearable synchronization. Conclusions The present study demonstrates the user-centered development of a guideline-based mHealth app for CVD prevention. Beta-testing and a preliminary usability study were used to further improve the HerzFit app until its official release.

Perumda Tirta Musi is a regional company that provides clean water services to the people of Palembang City and its surrounding areas. However, the current payment system is still dominated by conventional methods, such as payments at branch offices or through third-party payment counters, which are considered inefficient. To address this issue, this study aims to design the user interface (UI) and user experience (UX) of the Perumda Tirta Musi mobile water payment application using the Design Thinking approach. This method is applied to produce a design that is more effective and efficient in meeting user needs. Additionally, usability evaluation was conducted using the System Usability Scale (SUS) method to assess the quality of the interface and user experience. The study results show that the Perumda Tirta Musi mobile water payment application achieved an average usability score of 90.5, which is above the average score of 68. This score places the application in Grade A with an Excellent rating. With a high level of usability, the application enables users to complete tasks faster, reduce errors, and enhance user satisfaction and loyalty. The implementation of this application is expected to improve the efficiency of the payment process and enhance the quality of Perumda Tirta Musi's services.

With the development of applications, both through the web and mobile, applications cannot be separated from human-computer interaction. The ease of using the application is the target of developers to attract users' interest. In this era of globalization, website applications and mobile platforms are the mostly used for public branding. Application are used to deliver message through visuals from the appearance of the application. This is inseparable from the User Interface and User Experience. In today pratice, UI/UX designers mostly favor attractive visuals over the essence and purpose of creating a website, creating deviaton at UI/UX theory, design element, and color. it is necessary to design a UI / UX in order to application is attractive and the purpose of making the application is in line with expectations. There are several approaches to application design, one of which is Design thinking and Extreme Programming. This research aims to compare the Design thinking approach with Extreme Programming where the test obtained based on a literature review concluded that Design thinking has advantages in approaching potential users while Extreme Programming is less focused on potential users.

Aim/Purpose: To explore the effectiveness of utilizing the design thinking approach in developing digital self-directed learning environment to enhance digital literacy skills in Thai higher education. Background: To foster digital literacy skills in higher education, Thai students require more than access to technology. Emphasizing digital self-directed learning and incorporating Design Thinking approach, can empower students to learn and develop their digital skills effectively. This study explores the impact of digital self-directed learning environment, developed using a design thinking approach, on enhancing digital literacy skills among higher education students in Thailand. Methodology: The research methodology involves developing a digital self-directed learning environment, collecting and analyzing data, and using statistical analysis to compare the outcomes between different groups. The sample includes 60 undergraduate students from the School of Industrial Education and Technology at King Mongkut Institute of Technology, divided into a control group (n=30) and an experimental group (n=30). Data analysis involves mean, standard deviation, and one-way MANOVA. Contribution: This research contributes to the evidence supporting the use of Design Thinking in developing digital self-directed learning environment, demonstrating its effectiveness in meeting learners’ needs and improving learning outcomes in higher education. Findings: Key findings include: 1) the digital media and self-directed learning activities plan developed through the design thinking approach received high-quality ratings from experts, with mean scores of 4.87 and 4.93, respectively; and 2) post-lesson comparisons of learning outcome and digital literacy assessment scores revealed that the group utilizing digital media with self-directed learning activities had significantly higher mean scores than the traditional learning group, with a significance level of 0.001. Recommendations for Practitioners: Practitioners in higher education should use design thinking to develop digital self-directed learning environments that enhance digital literacy skills. This approach involves creating high-quality digital media and activities, promoting engagement and improved outcomes. Collaboration and stakeholder involvement are essential for effective implementation. Recommendation for Researchers: Researchers should continue to explore the effectiveness of design thinking approaches in the development of learning environments, as well as their influence on different educational aspects such as student engagement, satisfaction, and overall learning outcomes. Impact on Society: By enhancing digital literacy skills among higher education students, this study contributes to the development of a digitally skilled workforce, encourages lifelong learning, and aids individuals in effectively navigating the challenges of the digital era. Future Research: Future research could explore a broader range of student demographics and educational settings to validate the effectiveness of the Design Thinking approach in enhancing digital literacy. This could include integrating design thinking with alternative digital learning and teaching methods to further improve digital literacy.

Sistem i-Lab merupakan aplikasi berbasis web untuk mendukung pelaksanaan praktikum di Departement Informatika Universitas Muhammadiyah Malang (UMM). Namun, sistem berbasis web yang saat ini digunakan dianggap belum memenuhi kebutuhan sebagian besar pengguna yang lebih sering menggunakan mobile phone. Berdasarkan survey awal, aplikasi mobile i-Lab diharapkan memiliki tampilan yang menarik dan user experience yang memuaskan. Oleh karena itu, tujuan penelitian ini adalah merancang antarmuka pengguna pada aplikasi iLab mobile menggunakan pendekatan Lean User Experience (Lean UX). Lean UX dianggap lebih sesuai dan efisien dalam proses perancangan user interface perangkat lunak dengan penggunaan sumber daya minimum. Dalam penelitian ini metode Lean UX diterapkan dalam dua iterasi dimana setiap iterasi terdiri dari tiga tahap: yaitu think (analisis), design (membuat MVP), dan test (pengujian dan analisis feedback). Evaluasi dilakukan pada tiap iterasi dalam Lean UX untuk mengetahui tingkat usability sesuai dengan perpektif pengguna. Hasil perancangan dievaluasi menggunakan System Usability Scale (SUS) dengan responden yang merupakan pengguna aplikasi. Berdasarkan pengujian, rancangan Skor akhir mendapatkan nilai “B” (rentang 80-85) dengan skor 81,75 yang termasuk dalam kategori tingkat acceptability range “Good” dan adjective rating “Excellent”. Abstract The i-Lab system is a web-based application to support the implementation of practicum at the Department of Informatics, University of Muhammadiyah Malang (UMM). However, the web-based system currently used is considered not to meet the needs of most users who use mobile phones more often. Based on the initial survey, the i-Lab mobile application is expected to have an attractive appearance and a satisfying user experience. Therefore, the purpose of this research is to design a user interface on the iLab mobile application using a Lean User Experience (Lean UX) approach. Lean UX is considered to be more suitable and efficient in the process of designing user interface software with minimum resource usage. In this study, the Lean UX method is applied in two iterations where each iteration consists of three stages: think (analysis), design (make MVP), and test (test and analyze feedback). Evaluation is carried out at each iteration in Lean UX to determine the level of usability according to the user's perspective. The results of the design are evaluated using the System Usability Scale (SUS) with respondents who are application users. Based on the test, the final score design got a score of "B" (range 80-85) with a score of 81.75 which was included in the acceptability range category "Good" and the adjective rating "Excelent".

Effective user interface (UI) and user experience (UX) design are essential in improving the convenience and efficiency of using digital applications. This study aims to redesign the UI/UX of the BCA Mobile application by applying the Design Thinking method to create a design that is more relevant to user needs. The research method begins with a literature study and data collection through the User Experience Questionnaire (UEQ) questionnaire filled out by 10 respondents to identify user problems and expectations. Furthermore, five stages of Design Thinking are applied, namely Empathize, Define, Ideate, Prototype, and Testing. The design prototype was retested with respondents using the UEQ questionnaire to evaluate aspects of attractiveness, efficiency, clarity, dependability, stimulation, and novelty. The results showed a significant increase in UEQ scores on all scales, with an average increase of 3.55 points from a range of ?3 to +3. This shows that the Design Thinking approach is able to produce a UI/UX design that is more responsive and in accordance with user expectations, as well as improving the quality of user interaction with the application. This research is expected to be a reference in the development of UI/UX for other digital banking applications.

The implementation of hospital information systems in the digitalization-based era, including medical records, currently shows that there is a need for nursing education to focus on information education, including developing electronic-based practical student nursing care applications. This research aimed to design the user interface and user experience of electronic nursing documentation, named "The ENC". The ENC (electronic nursing care) with a design thinking approach. Designing the user interface (UI) and user experience (UX) used a design thinking approach consisting of empathize, define, ideate, prototype and test. Data collection was carried out at the empathize stage using content questionnaires and interviews. UI/UX design using the Figma application. Application testing with nursing student users based on predetermined scenarios. The ENC (electronic nursing care) application design uses the design thinking method to produce an application prototype that adapts to the needs of nursing students. To validate the efficacy of The ENC application, testing was conducted with nursing student users through predetermined scenarios. The design thinking approach facilitated the creation of an application prototype attuned to the specific requirements of nursing students. Following this, a comprehensive survey involving 30 nursing students was conducted to assess usability, quality, and satisfaction with the application's UI/UX, thereby capturing both positive and negative feedback. The ENC application adapts to the needs of nursing students to ease the transition from paper-based to electronic-based documentation, increase acceptance of the application, and increase its use in the clinical environment.

User interface design plays an important role in web design. Designing a user interface that satisfies the emotional needs of the users is essential as the user interface plays a crucial role in generating remarkable user experiences for websites. A poorly designed user interface leads to bad user interaction while raising the users’ arousal and a displeasing user experience with a website elicits dissatisfaction emotion where consecutively results in avoidance and prevents revisit to the website. A standard emotional based user interface web design would enhance user experience which will lead to success of a website. Kansei engineering which is a popular technique in transforming users’ feelings into product design is used in this research. This study tries to convert the feelings and emotions of users into design elements with the use of Kansei engineering technology in order to design an appropriate higher learning institution website by identifying a standard web design that cultivates emotional engagement. A standard user interface web design guideline for the development of the higher learning institutions’ website has been proposed in this research.

The purpose of this research is to develop a mobile-based laundry application with Design Thinking method and measure the level of user satisfaction through System Usability Scale (SUS) testing. As the popularity of laundry services increases, manual management becomes a significant challenge, such as inefficiency in recording and tracking orders. Therefore, this research offers an innovative solution by designing a Quick and Clean application that focuses on improving user experience (UI/UX) to simplify the management of laundry services. This research uses a Design Thinking approach that includes five stages: empathize, define, ideate, prototype, and test. The empathize stage involved interviews with 15 laundry service users to identify key needs and problems. The define stage mapped out the functional and non-functional requirements that formed the basis of the application design. The ideate stage produced a 16-page wireframe design, while the prototype stage produced an application model with UI design using Figma. The novelty value of this research lies in the application of the Design Thinking method in the context of laundry services, which is rarely applied in similar studies, as well as the integration of UI/UX design that emphasizes ease of use and operational efficiency. SUS testing shows an average score of 85.6 which falls into the Excellent category. This result indicates that the application design not only meets user needs but also provides a satisfying experience, contributing to the development of UI/UX standards in laundry business applications. Overall, this research has made a significant impact by presenting an application model that can improve the efficiency and quality of moobile-based laundry services. And this development makes it easier for further development to develop further.