System Usability Scale Questionnaire Research Articles

Evaluation of usability and user feedback to guide telepharmacy application development in Indonesia: a mixed-methods study

BackgroundIn Indonesia, the adoption of telepharmacy was propelled by the COVID-19 pandemic, prompting the need for a user-friendly application to support both the general population and pharmacists in accessing healthcare services. Therefore, this study aimed to evaluate usability and user feedback of a pioneering telepharmacy application known as Tanya Obat (translating to “Ask about Medications”) in Indonesia, from the perspectives of the general population and pharmacists.MethodsA mixed-methods sequential study was conducted with the early-stage Tanya Obat application in Bandung City. Participants, including the general population and pharmacists, were instructed to use the application for a week. Questionnaires for the general population and pharmacists were distributed from March to May and February to June 2023, respectively. The System Usability Scale questionnaire was adopted to describe usability of the developed application. Further exploration of the quantitative results required collecting open-ended feedback to assess the impressions of the participants, difficulties encountered, and desired features for enhanced user-friendliness. The collected statements were summarized and clustered using thematic analysis. Subsequently, the association between the characteristics of participants and perceived usability was determined with the Chi-square test.ResultA total of 176 participants, comprising 100 individuals from the general population and 76 pharmacists, engaged in this study. In terms of usability, the questionnaire showed that Tanya Obat application was on the borderline of acceptability, with mean scores of 63.4 and 64.1 from the general population and pharmacists, respectively. Additionally, open-ended feedback targeted at achieving a more compelling user experience was categorized into two themes, including concerns regarding the functionality of certain features and recommendations for improved visual aesthetics and bug fixes. No significant associations were observed between the characteristics of participants and perceived usability (p-value > 0.05).ConclusionThe results showed that the perceived usability of Tanya Obat developed for telepharmacy was below average. Therefore, feature optimizations should be performed to facilitate usability of this application in Indonesia.

Pilot study evaluating the usability of MonŒil, a ChatGPT-based education tool in ophthalmology

ImportanceThere is an increasing use of artificial intelligence (AI) in ophthalmology to respond to the needs of patients to access reliable, easy-to-understand medical information. ObjectiveTo assess patient satisfaction with the usability of MonŒil, an AI-based platform designed for patient education in ophthalmology. DesignThis was a pilot cross-sectional study of the usability of MonŒil by patients followed for advanced age-related macular degeneration (AMD). MonŒil is based on ChatGPT-4 technology with specific ophthalmology-focused customizations and accessibility enhancements, and is freely available at monoeil.help. Patients were given 20 min of unsupervised interaction with no prior training or guidance, after which their feedback was collected. SettingThe study was performed in the ophthalmology department at the Creteil University Hospital. ParticipantsParticipants included 54 patients diagnosed with advanced AMD defined presenting for follow-up. Patients had to be older than 50 years of age, capable of giving informed consent, and able to understand and interact with MonŒil. Exclusion criteria were severe visual and cognitive impairment that prevented interaction with MonŒil. Main Outcome(s) and Measure(s)The primary outcome was the usability of MonŒil as measured by the System Usability Scale (SUS) questionnaire. ResultsOf the 54 participants, 34 were female (62.96 %). The mean age of the cohort was 77.76±8.14 years (range 58 to 97 years). The mean SUS score was 90.23±12.04 with a median of 92.50 (range 42.50 to 100.00), indicating excellent usability. There was a positive relationship between visual acuity and SUS score (regression coefficient 0.30 (95 % CI 0.08 to 0.51), r2=0.19, p = 0.0077). Conclusions and RelevanceMonŒil demonstrated excellent usability and satisfaction in a sample population of elderly patients with advanced AMD. These results suggest that AI-based tools like MonŒil can enhance patient education with minimal oversight in a complex field like ophthalmology, supporting its use as an adjunct to the physician-patient discussion. Further studies may be necessary to establish the applicability of MonŒil to a broader user base, and to assess its usefulness and clinical impact on patient outcomes such as patient knowledge and vision-related quality of life.

The usability analysis of software loading tools in a commercial airline

Background: Aircraft software loading tools evolved as enhanced floppy disks and different types of portable data loaders emerged into the modern world. However, there was a lack of academic research centered on the usability of those tools. Objective: This study analyzed the usability of three aircraft software loading tools: floppy disks, Teledyne PMAT, and MBS mini PDL. Methods: A total of 20 avionics technicians answered 10 System Usability Scale (SUS) indicators and performed the software loading task. These professionals completed three sets of SUS questionnaires, one set for each software tool. Results: Analysis of Variance (ANOVA) indicated that there were statistical differences in SUS score and completion time. The comparable SUS score and completion time pertained to the following tools: floppy disks & MBS mini PDL and Teledyne PMAT & MBS mini PDL. Pearson correlation analysis noted a significant positive relationship between SUS score & software tool. Moreover, there was a significant negative relationship between SUS score & completion time and software tool & completion time. However, avionics technicians’ years of experience lacked a significant impact on SUS score and completion time. Ultimately, it was recommended to utilize MBS mini PDL. This aircraft loading tool had the most significant impact, highest SUS score, and fastest completion time. Conclusions: The researchers presented managerial implications if MBS mini PDL was utilized, including sales increase and overhead cost savings. Finally, this research was the first study that analyzed the usability of the commonly used aircraft software loading tools.

Use of the FebriDx® host-response point-of-care test may reduce antibiotic use for respiratory tract infections in primary care: a mixed-methods feasibility study.

FebriDx® is a CE-marked, single-use point-of-care test with markers for bacterial [C-reactive protein (CRP)] and viral [myxovirus resistance protein A (MxA)] infection, using finger-prick blood samples. Results are available after 10-12 min. We explored the usability and potential impact of FebriDx® in reducing antibiotic prescriptions for lower respiratory tract infection (LRTI) in primary care, and the feasibility of conducting a randomized controlled trial (RCT). Patients (aged ≥1 year) with LRTI deemed likely to receive antibiotic prescription were recruited at nine general practices and underwent FebriDx® testing. Data collection included FebriDx® results, antibiotic prescribing plan (before and after testing) and re-consultation rates. Staff completed System Usability Scale questionnaires. From 31 January 2023 to 9 June 2023, 162 participants participated (median age 57 years), with a median symptom duration of 7 days (IQR 5-14). A valid FebriDx® result was obtained in 97% (157/162). Of 155 patients with available results, 103 (66%) had no detectable CRP or MxA, 28 (18%) had CRP only, 5 (3%) had MxA only, and 19 (12%) had both CRP and MxA. The clinicians' stated management plan was to prescribe antibiotics for 86% (134/155) before testing and 45% (69/155) after testing, meaning a 41% (95% CI: 31%, 51%) difference after testing, without evidence of increased re-consultation rates. Ease-of-use questionnaires showed 'good' user-friendliness. Use of FebriDx® to guide antibiotic prescribing for LRTI in primary care was associated with a substantial reduction in prescribing intentions. These results support a fully powered RCT to confirm its impact and safety.

A serious game for raising air pollution perception in children

AbstractConcerns about air pollution have increased recently. Currently, 94% of the world population face air pollution levels considered unsafe by the World Health Organization, which tells us that efforts are needed to raise people’s awareness about air pollution. The use of serious games and gamification of interactive applications have raised people’s perception. This work presents Problems in the Air, a game developed in Unity about air pollution, in which the player’s goal is to control a character that inhabits an imaginary city tasked to monitor indoor and outdoor air pollution with sensors deployed across several city zones. While playing, children are expected to learn the possible causes of pollution in each zone and, this way, the game attempts to promote pro-environmental behaviors. This game allows educators to configure the problems that the player has to solve. Customisation is a desired feature in existing serious games as teachers often need to tailor this type of tools to their students. Pre- and post-surveys about air pollution were elaborated to evaluate air pollution perception of twenty students of an elementary school before and after playing the game, with results showing some significant positive effects. A System Usability Scale questionnaire was also performed and we obtained an acceptable mean value of 75, out of 100.

Redesign roadmap to support driving awareness at level railway crossings

The number of accidents at level railway crossings, especially crossings without gate barriers/attendants, is still very high due to technical problems, driving culture, and human error. The aim of this research is to provide road maps application based on ergonomic visual displays design that can increase awareness level for drivers before crossing railway crossings. The double awareness driving (DAD) map information system was built based on the waterfall method, which has 4 steps: defining requirements, system and software design, unit testing, and implementation. User needs to include origin-destination location, geolocation, distance & travel time, directions, crossing information, and crossing notifications. The DAD map application was tested using a usability test to determine the ease of using the application used the System Usability Scale (SUS) questionnaire and an Electroencephalogram (EEG) test to determine the increase in concentration in drivers before and immediately crossing a railway crossing. Periodically, the application provides information on the driving zone being passed; green zone for driving distances > 500 m to the crossing, the yellow zone for distances 500m to 100m, and the red zone for distances < 100 m. The DAD map also provides information on the position and speed of the nearest train that will cross the railway crossing. The usability test for 10 respondents giving SUS score = 97.5 (satisfaction category) with a time-based efficiency value = 0.29 goals/s, error rate = 0%, and a success rate of 93.33%. The cognitive ergonomic testing via Electroencephalogram (EEG) produced a focus level of 21.66%. Based on the results of DAD map testing can be implemented to improve the safety of level railroad crossings in an effort to reduce the number of driving accidents.

DESIGN OF THE MU DIABETES APPLICATION AS AN EDUCATIONAL METHOD OF TYPE II DIABETES MELLITUS BASED ON ANDROID SOFTWARE

Diabetes mellitus is a chronic condition prevalent among individuals. The cornerstone of effective diabetes management is strict adherence to daily medication intake. Deviation from the prescribed medication regimen poses a substantial risk of exacerbating disease and precipitating complications. Recognizing the necessity for educational interventions to bolster medication adherence among individuals with diabetes mellitus, the Mu Diabetes application was developed using the Android software. This research endeavors to devise an application encompassing comprehensive education on type II diabetes mellitus treatment with the primary aim of enhancing medication adherence. Employing a research and development approach, the study entailed designing, coding, and testing the application using the waterfall method and System Usability Scale questionnaire methodology, respectively. The resultant Android-based Mu Diabetes application, as evidenced by the trial outcomes using a Likert scale, yielded an average score of 80. In summary, the findings affirm the feasibility and utility of the Mu Diabetes application as a viable tool for managing type II diabetes mellitus and promoting medication adherence. Keywords: DM Type II, Drugs, android, application, alarm

New horizons in dermatological education: Skin cancer screening with virtual reality.

Technological advances in the field of virtual reality (VR) offer new opportunities in many areas of life, including medical education. The University of Münster has been using VR scenarios in the education of medical students for several years, especially for situations that are difficult to reproduce in reality (e.g., brain death). Due to the consistently positive feedback from students, a dermatological VR scenario for skin cancer screening was developed. Presentation and first evaluation of the skin cancer screening VR scenario to determine to what extent the technical implementation of the scenario was evaluated overall by the students and how their subjective competence to perform a skin cancer screening changed over the course of the teaching unit (theory seminar, VR scenario, theoretical debriefing). Students (n = 140) participating in the curricular pilot project during the 2023 summer term were surveyed throughout the teaching unit using several established questionnaires (System Usability Scale, Simulation Task-Load-Index, Realism and Presence Questionnaire) as well as additional questions on cybersickness and subjective learning. (i) The use of VR is technically feasible, (ii) students evaluate the VR scenario as a useful curricular supplement, and (iii) from the students' subjective perspective, a good learning outcome is achieved. Although preparation and follow-up appear to be important for overall learning, the greatest increase in subjective competence to perform a skin cancer screening is achieved by the VR scenario. Technically feasible and positively evaluated by students, VR can already be a useful addition to dermatology education, although costs are still high. As a visual discipline, dermatology offers special opportunities to create VR scenarios that are not always available or comfortable for patients in reality. Additionally, VR scenarios guarantee the same conditions for all students, which is essential for a high-quality education.

Development of an EKA application to help tuberculosis patients improve medication adherence and self efficacy

Tuberculosis treatment is carried out daily for a long time, causing boredom with taking medication and reducing medication adherence. It results in drug resistance and more prolonged treatment. In response to the situation, this study developed an android-based application called the education, calendar, and medication alarm (EKA) app to improve medication adherence and self-efficacy of tuberculosis patients. Research and development with four steps: evaluation of health education, medication adherence, and self-efficacy; application development; feasibility test; and application socialization. The sample in this study was 38 respondents. This study also uses morisky medication adherence scale (MMAS-8), self-efficacy, and system usability scale (SUS) questionnaires and evaluation sheets to collect the data. Data analysis was done descriptively. The outcomes of the application feasibility test showed that the EKA application received an acceptable value of 81.5 based on acceptance, B value (81.5) based on value scale, an excellent value (81.5) based on adjective rating, and good score (81.5) based on percentile. Socialization on the use of the application goes well, and the patient gets a good understanding and can use the EKA application easily. It proves that the android-based EKA application tested using the SUS questionnaire can be used as a medium for health education and supports medication adherence and self-efficacy.

Rehabilitation activities with tablet (REACT) in Parkinson's disease.

There is evidence to demonstrate that plasticity is "use-dependent" and that intensive practice may be necessary to modify neural organization. The main aim of this work is to investigate the REACT usability, an innovative app, to assist People with Parkinson Disease (PwPD) at home. A pilot study has been conducted enrolling 20 consecutive PwPD. Before home rehabilitation activities started, each patient received training on the REACT app and how to use the device and the services in daily practice. Motor and cognitive evaluations were administered to assign personalized exercises, tailored to patients' needs and potential. PwPD carried out REACT home program for 1month, four times a week. The app included motor exercise and tutorial of activities of daily living (ADL) and functional cognitive stimulation. REACT-app usability was evaluated with the System Usability Scale (SUS). The results from SUS questionnaire were, on average, above the threshold of "good usability" (SUS score > 68), as reported in the literature. The 47% of PwPD that used the app rated the usability of the solution as "excellent." Almost all SUS items reached the reference benchmark (except items 4, 5, and 7). No adverse events occurred. REACT can be considered a useful and safe tool to support the continuity of care and treatment at home, in PwPD. Larger-scale trials are needed to validate the good acceptance and efficacy of home rehabilitation through technology applications.

The differences between adults and adolescents using a mobile health application for menstrual complaints: A usability and qualitative study

BackgroundA “Menstruatie Educatie Kalender” application (Menstruation Education Calendar, (MEK-APP)) was developed for adults to evaluate menstrual complaints. The future aim of this app is to use it as a self-diagnostic instrument for menstrual abnormalities for both adults and adolescents. Early identification of the potential of an application for future use by both user groups would increase implementation success and adoption of the application. ObjectiveTo compare differences in experienced usability by adults versus adolescents and to identify factors influencing future use for both age groups in one mHealth application (in this study the MEK-APP). MethodsThis study consisted of three phases: (1) usability testing of the MEK-APP for iOS and Android by think-aloud method, (2) two-month daily use and (3) in-depth individual interview. During the think-aloud sessions, twelve tasks were performed in the application while they were thinking aloud. Usability problems were rated for their severity with Nielsen’ Severity Scale. Both the think-aloud sessions and in-depth interviews were verbatim transcribed and thematically analyzed to determine the factors influencing future use for both groups. In addition, the System Usability Scale (SUS) and Intrinsic Motivation Inventory (IMI) questionnaires were filled out during the interviews. ResultsSeven adults (>18 years) and seven adolescents (14–18 years) evaluated the MEK-APP. There were 14 usability issues and 16 bugs in both groups. There were no differences between adults and adolescents. In the thematic qualitative analysis, the following future use factors were identified: user-expectation, motivation, privacy, understandability, and user-experience. The user-expectation, motivation and privacy differed between both groups but did not influence usage. No differences were observed in SUS and IMI scores between both groups. ConclusionsThere are five factors influencing the future use of a menstrual-related mHealth application for both adults and adolescents. It is possible to serve different age groups with a single application.

Software BreastAnalyser for the semi-automatic analysis of breast cancer immunohistochemical images

Breast cancer is the most diagnosed cancer worldwide and represents the fifth cause of cancer mortality globally. It is a highly heterogeneous disease, that comprises various molecular subtypes, often diagnosed by immunohistochemistry. This technique is widely employed in basic, translational and pathological anatomy research, where it can support the oncological diagnosis, therapeutic decisions and biomarker discovery. Nevertheless, its evaluation is often qualitative, raising the need for accurate quantitation methodologies. We present the software BreastAnalyser, a valuable and reliable tool to automatically measure the area of 3,3’-diaminobenzidine tetrahydrocholoride (DAB)-brown-stained proteins detected by immunohistochemistry. BreastAnalyser also automatically counts cell nuclei and classifies them according to their DAB-brown-staining level. This is performed using sophisticated segmentation algorithms that consider intrinsic image variability and save image normalization time. BreastAnalyser has a clean, friendly and intuitive interface that allows to supervise the quantitations performed by the user, to annotate images and to unify the experts’ criteria. BreastAnalyser was validated in representative human breast cancer immunohistochemistry images detecting various antigens. According to the automatic processing, the DAB-brown area was almost perfectly recognized, being the average difference between true and computer DAB-brown percentage lower than 0.7 points for all sets. The detection of nuclei allowed proper cell density relativization of the brown signal for comparison purposes between the different patients. BreastAnalyser obtained a score of 85.5 using the system usability scale questionnaire, which means that the tool is perceived as excellent by the experts. In the biomedical context, the connexin43 (Cx43) protein was found to be significantly downregulated in human core needle invasive breast cancer samples when compared to normal breast, with a trend to decrease as the subtype malignancy increased. Higher Cx43 protein levels were significantly associated to lower cancer recurrence risk in Oncotype DX-tested luminal B HER2- breast cancer tissues. BreastAnalyser and the annotated images are publically available https://citius.usc.es/transferencia/software/breastanalyser for research purposes.

Exploring Students’ Hands-On Performance, Attitudes, and Usability with Arduino Modular Boards

Utilizing Arduino development boards for learning microcontroller circuits is a prevalent practice across various educational levels. Nevertheless, the literature offers limited insights into the impact of these boards on student performance and attitudes. Therefore, this paper aims to investigate the performance of 58 university students in learning microcontroller circuits with modular boards designed for Arduino through a series of 4 exercises. Specifically, students’ performance is assessed through pre-tests and post-tests, in three learning units: (a) microcontroller, (b) coding, and (c) circuit. Additionally, the study captures students’ attitudes and measures their perceived usability of modular boards. For this purpose, the students completed a specially designed attitude questionnaire and the system usability scale (SUS) questionnaire. Statistical analysis is conducted using t-tests, ANOVA, and ANCOVA, along with bootstrapping. The findings reveal statistically significant differences between pre-tests and post-tests in all cases. Among the three learning units, the use of modular boards appears to have the most significant impact on coding. Based on students’ responses, the SUS results indicate that modular boards appear to be a quite usable approach for teaching microcontrollers. Finally, students generally express positive attitudes toward modular boards.

Development of a Prototype of Android-Based Nursing Care Standards for Diabetes Mellitus Patients in the Interna Nursing Ward at RSUD Toto Kabila

Gorontalo ranks 7th in the number of Diabetes Mellitus sufferers out of 35 provinces in Indonesia with prevalence increasing from 1.3% in 2013 to 2.4% in 2018. High prevalence and morbidity can be reduced by improving the quality of nursing care in hospitals through standardization of nursing care for diabetes mellitus patients. This research aims to develop electronic-based nursing care standards (E-SAK) and to improve the quality of nursing care for diabetes mellitus patients by conducting prototype trials. This research uses a pre-experimental design research type with a one shot case study approach where measurements of the effectiveness of the application and its level of usefulness are carried out after the intervention. The type of sampling used total sampling by taking all 30 nurses in the internal room. The nursing care standards used in this application are prepared based on nursing professional organization standards (PPNI), a list of diagnoses that form the application database using an evidence-based nursing approach based on the results of a literature review. The research instrument used in this study was the SUS (System Usability Scale) questionnaire to test the ease of use of the application by nurses. The SUS questionnaire was adapted from research conducted by (Alfatoni et al., 2020) and has gone through a reliability test with a Cronbach's Alpha value > 0.06. From the statistical test results, it was found that the average usability score was 89, which means the level of satisfaction means that this application prototype is acceptable or easy to use and the level of usefulness is high by respondents. Thus, this application can be used by hospitals to improve the quality of nursing care services for diabetes mellitus patients.

Pet Service Information System Using the Rational Unified Process Method

Pet ownership is prevalent in the present period, and Pet Shops are enterprises that have arisen in conjunction with this phenomenon. One of The Pet Shop in Bandung is a small to medium-sized firm that caters to pet aficionados by offering a wide range of pet goods, including food and grooming services. One of The Pet Shop in Bandung has faced various obstacles in its business operations, such as inadequate documentation of item availability and insufficient product information provided to clients. In order to tackle these difficulties, the researcher utilized the Rational Unified Process (RUP) methodology to construct a website for One of The Pet Shop in Bandung. The RUP technique is appropriate for this research because it incorporates user perspectives throughout every stage. The website underwent Usability Testing with five user responders utilizing the System Usability Scale questionnaire. The questionnaire assessment utilizing the Likert scale and Usability measurement yielded a score of 72%, signifying its appropriateness.

A Tool to Support Students-to-Teacher Feedback in Asynchronous Online Contexts

In recent years, the world of education has become increasingly Hybrid (online / on location) and Flexible (synchronous / asynchronous). One of the risks of these mixed environments is the distance between teacher and students that can make interaction, a crucial component of the teaching / learning process, more difficult. This paper introduces Evoli, a tool to support the “HyFlex model”; more specifically, the component dealing with online / asynchronous mode. Evoli enables teachers to receive precise, time-stamped feedback by their students on educational materials (typically videos). Students go through the materials and express their level of understanding as well as their questions and comments. Dashboards with the students' data allow the teacher to know, topic by topic, what is clear and what is not and thus how to organize the synchronous sessions. The tool was evaluated in a real-life setting, involving 63 graduate students in a course on Plasma Physics. The students filled in a System Usability Scale questionnaire and some questions regarding the perceived usefulness of the tool; the teacher's opinion was gathered via a semi-structured interview. Results show that students found the tool both usable and useful; the teacher's opinion was that the tool allowed prompting more reactions than a normal setting and an optimization of teaching organization.

Multiplatform web app (My Way Up) plus motivational interviewing for improving treatment retention in patients with onset of alcohol-related liver disease and alcohol use disorder - an example of participatory research.

With the aim of improving treatment retention in patients with the onset of alcohol-related liver disease (ArLD), we designed a blended intervention (brief motivational intervention + 'serious game' (SG)). We present the participatory design methodology and outcomes and the usability assessment of the intervention. (1) The design of the SG was based on the outcomes of two 3-h co-creation sessions with 37 participants (healthcare and technology professionals, patients, and patients' relatives). The brief face-to-face motivational intervention was based on the 5 As Model and adapted to the ArLD population. (2) Usability pilot study: 20 participants (10 ArLD patients + 10 healthcare professionals) received the intervention. System Usability Scale (SUS) and Post-Study System Usability Questionnaire (PSSUQ) were applied to assess the SG usability and patients' satisfaction with it. Weekly semi-structured interviews on the phone were conducted to identify the preferred elements in the SG and those aspects that should be improved. (1) Design: an SG in the form of a gamified web app, consisting of a daily activity for six weeks and adapted brief motivational interviewing. (2) Usability pilot study: usability results were excellent for both patients and healthcare professionals (SUS median score = 85). The general usability, the quality of the information provided by the SG and the quality of the interface were very positively rated in the PSSUQ (overall median score = 2, IQR = 1-2). The best-rated aspects were the provision of feedback, the use of metaphors and the application of audiovisual material. Changes in the design, response mechanics and content were applied after the study. The usability and acceptability of an intervention for increasing retention to treatment in patients with recent onset of ArLD and AUD were excellent for patients and healthcare professionals. A randomized-controlled trial is required to test the efficacy of this approach.

The most used questionnaires for evaluating the usability of robots and smart wearables: A scoping review.

As the field of robotics and smart wearables continues to advance rapidly, the evaluation of their usability becomes paramount. Researchers may encounter difficulty in finding a suitable questionnaire for evaluating the usability of robotics and smart wearables. Therefore, the aim of this study is to identify the most commonly utilized questionnaires for assessing the usability of robots and smart wearables. A comprehensive search of databases, including PubMed, Web of Science, and Scopus, was conducted for this scoping review. Two authors performed the selection of articles and data extraction using a 10-field data extraction form. In cases of disagreements, a third author was consulted to reach a consensus. The inclusions were English-language original research articles that utilized validated questionnaires to assess the usability of healthcare robots and smart wearables. The exclusions comprised review articles, non-English publications, studies not focused on usability, those assessing clinical outcomes, articles lacking questionnaire details, and those using non-validated or researcher-made questionnaires. Descriptive statistics methods (frequency and percentage), were employed to analyze the data. A total of 314 articles were obtained, and after eliminating irrelevant and duplicate articles, a final selection of 50 articles was included in this review. A total of 17 questionnaires were identified to evaluate the usability of robots and smart wearables, with 10 questionnaires specifically for wearables and 7 questionnaires for robots. The System Usability Scale (50%) and Post-Study System Usability Questionnaire (19.44%) were the predominant questionnaires utilized to assess the usability of smart wearables. Moreover, the most commonly used questionnaires for evaluating the usability of robots were the System Usability Scale (56.66%), User Experience Questionnaire (16.66%), and Quebec User Evaluation of Satisfaction with Assistive Technology (10%). Commonly employed questionnaires serve as valuable tools in assessing the usability of robots and smart wearables, aiding in the refinement and optimization of these technologies for enhanced user experiences. By incorporating user feedback and insights, designers can strive towards creating more intuitive and effective robotic and wearable solutions.

Assessing the impact of chart design and time intervals on the usability of time series data visualization: A Case Study on Cryptocurrency Data

Based on Google Trends, searches related to cryptocurrency have significantly increased in the last couple of years. One crucial aid for cryptocurrency traders or investors is the graphical visualization, which shows the time series data of the cryptocurrency prices. However, problems may occur in data visualization, such as visual noise and information loss, which cause perceptual and cognitive errors in data reading. Therefore, good visualization is needed to avoid decision-making mistakes, particularly in the cryptocurrency trade and investment activities. This study aims to investigate the effect of chart design and time interval on the usability of data visualization. The experiments are conducted in two scenarios, i.e., with and without time pressure. The participants recruited in this study were non-experienced and experienced people classified based on their familiarity with cryptocurrency investment/trading. Objective usability testing is performed by eye tracking, while subjective assessment employs the System Usability Scale (SUS) questionnaire. There are four quantitative dependent variables: response time, number of errors, number of fixations, and time to first fixation. The results show that time interval and time pressure significantly affect usability for both groups of respondents. Although chart design does not substantially affect the dependent variables, a candle chart is generally better than a line chart. By comparing all the combinations of chart design and time intervals, this study concluded that combining candle charts with 1-hour or 4-hour time intervals gives the best results for both respondent groups.

Innovative Design of Ecommerce Mobile Application Using Kansei Engineering and System Usability Scale

Information technology is currently growing at a rapid speed in order to provide users with convenience, one of which is the ease of accessing the internet via mobile phones. The emergence of social media programs such as virtual buddy applications has contributed to the rapid increase in internet users, particularly via mobile phones. Social media, in addition to being a virtual friendship application, also functions as a promotional medium, one of which is the promotion of online shopping applications, hence boosting the number of online purchasing transactions in Indonesia. An online shopping platform was chosen to market university’s products, allowing customers to shop easier and may increase the growth rapidly. As a result, Kansei Engineering is used in this study to develop applications that tap into users’ emotional demands. In addition, to establish the optimum design for the user, the prototype was tested for performance and usability using a System Usability Scale (SUS) questionnaire. According to the study’s findings, the application will be created with the following feelings in mind: appealing, attractive, organised, practical, innovative, quick, effective, accessible, interactive, and unique. According to usability studies, the “friendly concept” application generated better levels of satisfaction than the other design concepts.