• 산업경영시스템학회지
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• 제19권37호
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• pp.87-94
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• 1996

There is a currently a focus on the usability of interactive computer products. Many usability measurement and evaluation methods have been developed in the fields of human-computer interaction and software ergonomics. In this paper, the issues of usability evaluation methods are introduced, and the usability evaluation methods are classified and compared. Also, the framework for systematic usability effort based on product' lifecycle is presented.

• 대한안전경영과학회지
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• 제18권1호
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• pp.45-55
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• 2016

In this study we carry out usability evaluation for adjustable electric beds for home care that are used the most by the elderly, and examines dissatisfaction of users. In this sense, we performed an interview with stakeholders including bed users, developers and suppliers to develop usability evaluation contents. In addition, we carried out feasibility and reliability study over evaluation form through usability assessment, and developed usability evaluation indicator.

• 한국콘텐츠학회논문지
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• 제19권1호
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• pp.404-412
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• 2019

본 연구는 제품의 사용성과 관련 있는 서로 다른 니즈(Needs)를 가진 이해관계자를 통해 사용성 평가 항목을 개발하고 결과를 기반으로 제품디자인에 적용하는 프로세스를 거쳤다. 또한 사용성 평가항목을 활용하여 디자인 방향성을 도출하고 이를 사용성 평가기준으로 활용할 것을 목적으로 한다. 상업용재에 해당하는 화재감지기 제품을 둘러싼 이해관계자맵을 작성하고, 그 중 사용성과 관계된 유형의 이해관계자를 파악하였는데 요구사항이 다른 사용자인 건물상주객과 건물관리자를 대상으로 사용성 평가 항목 3가지(육체적, 인지적, 감성적) 요인별 요구사항을 설문하였다. 설문 결과를 종합하여 총 12가지의 방향성(설치 용이성, 내구성, 유지관리성, 부가기능성, 효과성, 주목성, 시인성, 정보의 일관성, 환경조화성, 일관성, 이미지적합성, 신뢰성)을 도출하였다. 그리고 3가지의 사용성 평가요인에 대한 가중치 분석을 통해 두 이해관계자 유형간의 사용성 평가요인의 중요도 순위는 동일하였으나 중요도의 비중이 상이함을 알 수 있었다. 최종적으로 설문결과를 기반으로 제품디자인을 수행하고 작성된 사용성 평가 기준을 기반으로 전문가 평가를 진행하여, 전반적으로 사용성 평가항목에 적합하게 디자인되었으나 효과성 및 환경조화성은 더 개선되어야 함을 알 수 있었다.

• 대한인간공학회지
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• 제31권2호
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• pp.299-308
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• 2012

Objective: This study presents the conceptual framework and the conceptual model to account for user experience by expanding the existing concepts of usability, in particular considering the user-interface environment in digital convergence. Background: To better understand a variety of users interacting with a converged product based on digital technologies, there seems to be a limit to consider the existing concepts of usability. All possible aspects of user's interaction with a product in a context of use need to be taken into consideration. Method: This study identifies the concept of user experience through a comprehensive literature review. Results: First, this study reviews the existing concepts of usability and user experience. And then this study describes four main components in the conceptual framework of user experience: user's internal states, user's external states, a product, and various outcomes, each of which encompasses distinct sub-components. The conceptual model of user experience accounts for how user's internal states change over time and for how different sub-components affect actual behavior of use. Conclusion: It is expected that these user experience concepts can be used in basic resources to better understand different behavioral characteristics of users and to better design interactive products in converged digital environments.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2003년도 가을학술발표대회
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• pp.50-51
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• 2003

• 대한산업공학회지
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• 제40권2호
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• pp.223-232
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• 2014

Life-cycle assessment (LCA) is often employed to quantify the environmental impact of a product in a comprehensive manner. The aspects of performance and usability as well as that of eco-friendliness should be considered in an integrated manner for the market competitiveness of an eco-friendly product. The present study developed a product improvement plan for an eco-friendly electric heater by benchmarking two small-size electric heaters (companies 'H' and 'T') in terms of performance, usability, and eco-friendliness. The performance measurements such as temperature, humidity, wind speed, noise, and power consumption were collected while the two heaters were operated in a laboratory setting. Then, the usability evaluations such as aesthetics, operation satisfaction, performance satisfaction, and overall satisfaction were surveyed for the two heaters using a 5-point scale (1 for very unsatisfied and 5 for very satisfied). Lastly, the LCA analysis was conducted by following the six-step process of eco-friendly product design provided by KEITI. The analysis results of the two products being integrated with the aspects of product, service, and user, four design improvement directions such as eco-efficient, smart, modularized, and user-support were recommended for an eco-friendly electric heater. These proposed concepts would be useful to develop an eco-friendly electric heater design with a high level of market competitiveness.

• 대한인간공학회지
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• 제33권5호
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• pp.407-422
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• 2014

Objective: The purpose of the study is to develop quantitative usability evaluation criteria for senior-friendly autonomous transportation robot. Background: The Republic of Korea has become the most rapidly aging society, and is anticipated to enter the post-aged society in 2026. To raise the quality of life of a senior with limited mobility and to reduce the burden of caregivers, many high-tech assistive products with information technologies are developed nowadays. The senior-friendly autonomous transportation robot is one person robot vehicle to move a senior to the destination for hospitals, nursing homes or silver town complex. With built-in navigation system and environmental monitoring censors, it automatically seeks the path to the destination and avoids collision to obstacles and pedestrians on the way. Due to the early stage of the product, few usability studies in this field have been done, mostly on general service robots to assist seniors, power wheelchairs and delivery robots. ISO and KS standards for the service robots are focused on safety. Method: Based on the reference usability index, the early draft of the usability evaluation questionnaires was developed. After small group tests and interviews, the experts modified the initial draft to the Usability Evaluation Criteria for Senior-Friendly Autonomous Transportation Robot (UEC-SFATR). Result: UEC-SFATR consisted of 4 subscales - Safety, Controllability, Efficiency and Satisfaction. All of the 4 subscales of UEC-SFATR were passed the reliability criteria by 4 groups of seniors, divided by gender and familiarity of smart-devices. Conclusion: UEC-SFATR covers wider area of user experiences of the SFATR and is a good measurement tool to help both the users and developers of the robot. Application: This study provides guide to the future product development and product competitiveness evaluation by quantifying user experiences for the SFATR.

• 한국실천공학교육학회논문지
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• 제2권2호
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• pp.157-164
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• 2010

보행보조차와 욕창방지 매트리스를 포함하는 고령친화제품의 사용빈도는 고령자 인구의 증가에 의하여 높아지고 있다. 고령자의 경우, 인간공학적으로 잘못 디자인된 제품을 사용하는 경우 사용성 측면에서의 문제뿐만 아니라 안전성 측면에서도 심각한 문제를 야기할 수 있다. 고령자 사고의 상당부분은 고령친화제품을 사용하는 과정에서 발생한다. 본 연구에서는 고령친화제품을 사용할 때의 고령자의 사용성에 대하여 산학협력을 통하여 연구하였다. 사용성 평가 프로그램이 고령친화제품을 개발하거나 제조하는 기업을 지원하기 위하여 개발되었고, 보행보조차와 욕창방지 매트리스에 대한 사용성이 평가되었으며 그 결과가 기업에 제공되었다.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1998년도 춘계학술대회논문집
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• pp.93-98
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• 1998

Recently, consumers are tend to purchase the user-centered designed product using interface enginnering and human factors techniques. Therefore, it is important that the designer's requirements should be analyzed focused on the human machine interface. This paper described the interface usability evaluation technique(suvjective evaluation) for the interface between user and product. This methodology is the integrated interface usbility evaluation method AHP and Conjoint Analysis. AHP(Analytic Hierarchy Process) is a multicriteria decision model to give priority after expressing hierarchically for decision making problem. Conjoint Analysis enduavors to unravel the value, or partworths, that consumers place on the product or service's attributes from experimental subjects' evluation of profiles based on hypothetical products or services. A new usability test methodology proposed by this paper includes techniques jointed both consistency test by AHP and experimental subjective evaluation of profiles by Conjoint Analysis for evaluating the user's emotion and impression.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1995년도 춘계학술대회논문집
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• pp.16-22
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• 1995

The importance of usability evaluation is increasing in developing a new system and product. The current approaches for usability evaluation are: the comparative evaluation to measure usability, and the iterative user interface design to find usability problems. This paper pressents three types of characteristics and a set of criteria for usability evaluation. The methodology for criteria-based quantitative analysis of user interface usability is investigated with a view to measuring usability. The fuzzy weighted-checklist method with linguistic variables is used for quantitatie analysis. This analysis provides a quantitative measure, which reflects the degree of excellence of user interface usability during the design and development phases.