• Journal of Korean Society of Archives and Records Management
• /
• v.21 no.3
• /
• pp.187-215
• /
• 2021

Archives should provide a web-based archival information service with good usability based on the understanding of users' needs. Thus, this study analyzed the usability of the National Archives of Korea (NAK) website's search service through expert and usability evaluations for various users and suggested improvement plans. A literature review, heuristic evaluation, one of the usability expert evaluation methods, and usability evaluation for users were performed. As a result of expert evaluation, the severity rating for the usability problem was highest regarding a match between the system and real world and the lowest in error prevention. In the usability evaluation, it was assumed that the user's background and whether the website's help was provided is associated with usability. Usability evaluation was conducted for 22 participants, including those majoring in records management, web/application developers, and people without such backgrounds. Furthermore, a presurvey, a five-second test, and search tasks were conducted in a row. The analysis based on usability components in ISO 9241-11: 2018, i.e., effectiveness, efficiency, and satisfaction, showed that web/application developers had the highest search effectiveness, and those majoring in records management showed high effectiveness only in the search for archival content services. Background factors did not affect efficiency, and the more familiar with the finding aids, the better the efficiency. Moreover, providing the website's help was found to be positively associated with effectiveness and satisfaction. This study suggests that the NAK website will offer a user-friendly interface and search function, expand help support, and display a consistent web interface.

• Journal of the Korean Society of Physical Medicine
• /
• v.17 no.4
• /
• pp.151-160
• /
• 2022

PURPOSE: To evaluate the usability of a kiosk-based healthcare service that provides a fitness evaluation and customized exercise program for elderly or chronic musculoskeletal system patients. METHODS: To evaluate the usability of the customized exercise service program, healthy adults (n=20) from Welfare B, located in Gwangju, were selected and studied. Subjective safety, operability, and satisfaction of individual users were obtained as data by distributing questionnaires to subjects who experienced this program and having them fill out the questionnaire. For descriptive statistics related to the survey, frequency analysis was used to determine the frequency and ratio of the variable values of the measurement items. RESULTS: As a result of the usability evaluation, the average score was 4.166, and the average score of each item was 4.025 for safety, 4.272 for operability, and 4.143 for satisfaction. Most users obtained high satisfaction and positive impressions. CONCLUSION: The HARUFIT service, a user-customized exercise program used in this study, can be developed into a device that can improve self-management ability and increase understanding of health care by providing customized exercise based on the results of physical fitness evaluation. It is possible to diversify health management methods and maximize the effect of exercise by making exercise a habit of chronic musculoskeletal disease patients or the elderly using these smart devices.

• International Journal of Computer Science & Network Security
• /
• v.21 no.1
• /
• pp.55-63
• /
• 2021

The design functionality put forward by mapping the interactiveness of information. The presentation of such information with the user interface model indicates that the guidelines, concepts, and workflows form the deliverables and milestones for achieving a visualized design, therefore forming the right trend is significant to ensure compliance in terms of changing consideration and applying evaluation in the early stages. It is evidenced that prototype design is guided by improvement specifications, includes modes, and variables that increase improvements. The study presents five user interface testing methods. The testing methods are heuristic evaluation, perspective-based user interface testing, cognitive walkthrough, pluralistic walkthrough, and formal usability inspection. It appears that the five testing methods can be combined and matched to produce reasonable results. At last, the study presents different mobile application designs for student projects besides the evaluation of mobile application designs to consider the user needs and usability.

• Journal of Digital Contents Society
• /
• v.17 no.1
• /
• pp.43-50
• /
• 2016

The purpose of the study is to identify the usability of OpenCouresWare(OCW) from the perspective of students with visual and hearing impairments. Twelve college students with disabilities(8 visual and 4 hearing impairment) implemented usability testing. Two modules in both edX and KOCW were selected for testing. Students with disabilities implemented usability testing and then each individual case was analyzed through quantitative and qualitative methods. As results, the degree of general usability in both edX and KOCW indicated an average level and the degree of accessibility in edX module was evaluated higher than KOCW. Specifically, the module of edX was rated highly by students with hearing impairments and the usability level of KOCW module was highly appreciated by blind students.

• The Journal of Society for e-Business Studies
• /
• v.26 no.4
• /
• pp.53-79
• /
• 2021

With the revitalization of non-face-to-face transactions, the difference between the size of branches and transaction costs among securities firms has decreased, and the importance of the stock trading system has increased. In particular, the mobile trading system has become more important due to the increase in the proportion of transactions in the mobile trading system, which is widely used by individual investors, and the increase in the number of individual investors after COVID-19. However, user-centered usability studies are insufficient as usability studies on mobile trading systems are conducted through literature surveys or survey methods. Therefore, in this study, a repertory grid technique that finds user's empirical perception was used to find out user-centered usability attributes. The usability attributes of the mobile trading system from the user's point of view were elicited, and the difference in the usability attributes in terms of frequency and importance between the user group and the developer group was identified.

• Archives of design research
• /
• v.19 no.5 s.67
• /
• pp.373-382
• /
• 2006

In this study, emotional word logging software,'VideoTAME' was developed as an effective measurement tool for complementing the current psychological measuring methods. With the software, we measured the user's emotional changes while they interact with a product. The main goal of this study is to reveal the influence of usability on human emotions by analyzing the user's emotional changes while using a product. In this research, we asked 30 subjects to examine their emotional changes with watching the video clip recorded when they performed a series of tasks with a cellular phone in the experiment room. The results of this research indicated that negative emotion such as 'Uncomfortalbeness' was elicited mostly while they performed tasks which were difficult due to usability problems. On the other hand, positive emotion such as 'Satisfaction in Usability' was elicited for tasks which were easy to perform because of good usability. The reason for the user's emotional changes while they interact with a product can be assumed that the emotional changes were caused by specific situations they face when performing a task rather than the characteristics of task itself. We expect to clarify how usability of a product impact user's emotions in depth with more data collected and analyzed with the help of 'VideTAME'.

• Journal of Korean Physical Therapy Science
• /
• v.31 no.1
• /
• pp.16-32
• /
• 2024

Background: Exercise equipments and assistive devices for the disabled are being developed, but improvements for usability are still needed. The purpose of this study was to improve and utilize the developed exercise equipment and assistance devices by conducting usability test for people with spinal cord injury. Design: Cross-sectional Study. Methods: Scenarios and usability indicators were derived by conducting a preliminary usability test, 5 non-disabled men and women aged 19 or older. In the scenario, a total of 9 tasks were sequentially performed, including 2 tasks of entry and exit, 5 tasks of assistance devices and weight stack adjustment, and 2 tasks of pre exercise and exercise. The usability indicators were task success (success or fail), execution time (sec), safety, and convenience. For safety, 7 questions (Likert scale, 1~5 point) related to safety, stability and hazard were derived, and for convenience, the system usability scale (SUS score) was used (range: 0~100, 50 percentile rank is 68 point). Results: As a result of the usability test of people with spinal cord injury, there was a large variation among subjects in the task of adjusting the position of the pulley and support in the execution time (11.64~25.44 seconds), and one person failed to adjust the pulley. The safety level showed a lower score (score = 3 points) than other items in the item of entrapment or skin pressure, and in the case of SUS, the average score was 64.5 points, which was close to the acceptable level. Conclusion: Through the usability test, it was confirmed that exercise equipment for the disabled needs improvement in operability, pinching, and pressure, and that it is necessary to develop an assistive device that provides unrestrained posture information (biofeedback) to maintain correct posture during exercise.

• 한국HCI학회:학술대회논문집
• /
• 2009.02a
• /
• pp.34-39
• /
• 2009

Four-digit PIN(Personal Identification Number) is a well-known user authentication method used for many applications including ATMs and mobile phones. However, it is vulnerable to shoulder surfing attacks(SSAs). In this paper, we present new PIN entry methods which are secure against SSA and easy to use. We compare the usability and security of these methods with those of the existing methods.

• Proceedings of the Korea Society of Design Studies Conference
• /
• 2000.11a
• /
• pp.36-37
• /
• 2000

20세기말부터 제2의 산업혁명으로까지 불리며 텔레비전 이후 가장 중요한 커뮤니케이션 수단으로 부상한 인터넷은 일상 생활, 가치관을 비롯하여 거의 모든 인간 활동 분야에 있어서 일대의 구조적 전환기를 맞게 했다 그러나 웹의 양적인 팽창에 비해 웹에 대한 체계적인 논의나 연구들이 아직까지는 급속한 웹 기반 기술의 발전에 비해 뚜렷한 학문적 성과로 병행 발전되지 못하고 있는 편이다. (중략)

• Proceedings of the ESK Conference
• /
• 1997.10a
• /
• pp.376-380
• /
• 1997

This paper describes usability evaluation techniques for the human interface of consumer electronic products. The techniques include measures for evaluating the user performance and emotion/impression on the product. Evaluation method for collecting the measures were also surveyed and summarized. Finally, this paper describes a systematic way of finding appropriate methods for collecting a specific measures.