• 제목/요약/키워드: App Evaluation

검색결과 178건 처리시간 0.024초

스마트 홈(Smart Home) 앱 디자인의 사용성 평가를 위한 평가지표 개발 (Development of Evaluation Indicators for the Usability Evaluation of Smart Home App Design)

  • 이만;김맹호
    • 한국콘텐츠학회논문지
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    • 제19권5호
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    • pp.249-258
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    • 2019
  • 현재는 스마트 홈 사업에 대한 사람들의 관심이 증가하고 있다. 따라서 스마트 홈 시스템에 대하여 연구가 중요해지고 있다. 스마트 홈 시스템에서 중요한 구성 부분인 스마트 홈 앱은 지속적으로 관심을 위해서는 사용성을 고려한 평가지표 개발이 중요하다. 이에 본 논문은 스마트 홈 앱을 대상으로 스마트 홈 앱 디자인의 사용성 평가지표 개발하고자 하는데 있다. 본 연구를 위하여 델파이 기법을 이용하여 3차에 걸쳐 조사를 실시하였다. 1차 조사에서는 문헌고찰을 통해 도출된 평가 영역에 대한 전문가들의 의견을 수렴하고 내용타당도 비율(CVR) 값을 분석하여 적절한 영역 8개를 선정하였다. 1차 조사 결과를 바탕으로 국내외 선행연구와 사용자 인터뷰 조사를 통해 총 38개 평가 항목을 수집하였다. 수집된 38개 평가 항목은 2, 3차에서 평균(M), 표준편차(SD), 내용타당도 비율(CVR), 합의도(H), 수렴도(QD) 등을 분석하고 최종 8개 영역 하위에 포함된 27개 항목을 선정되었다. 본 연구 결과는 스마트 홈 앱 디자인의 사용성 평가 시 가이드라인으로 활용될 수 있다.

An exploratory analysis and usability evaluation of fashion mobile applications - Focus on Korea and U.S. App stores -

  • Ju, Na-An;Lee, Davin;Jeon, Hyung Min;Lee, Kyu-Hye
    • 복식문화연구
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    • 제21권2호
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    • pp.287-300
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    • 2013
  • The aim of this study was to find typology of fashion-related mobile applications through exploratory investigation and to investigate differences in Korea and U.S. App stores. And then, through the qualitative evaluation about fashion mobile applications, this study proposes fashion mobile application's design and contents which can be preferred by users. By conducting keyword search in each store, 122 Korean applications and 150 US applications were analyzed. Empirical findings revealed that there were seven major types of fashion mobile applications: brand, magazine, information, SNS, game, shopping and coordination. Information type applications took up the largest portion, and SNS and game type applications showed higher ranking among customers. There were more game Apps in US and more shopping Apps in Korean stores. More free Apps were found in Korean App stores, whereas relatively more paid Apps were found in US App stores especially in game, magazine and information type applications. And as a result of usability evaluation of fashion mobile application, users prefer SNS and information category application to shopping and brand category. Also users want continuous improvement and new contents for fashion mobile application.

Spinosin Inhibits Aβ1-42 Production and Aggregation via Activating Nrf2/HO-1 Pathway

  • Zhang, Xiaoying;Wang, Jinyu;Gong, Guowei;Ma, Ruixin;Xu, Fanxing;Yan, Tingxu;Wu, Bo;Jia, Ying
    • Biomolecules & Therapeutics
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    • 제28권3호
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    • pp.259-266
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    • 2020
  • The present research work primarily investigated whether spinosin has the potential of improving the pathogenesis of Alzheimer's disease (AD) driven by β-amyloid (Aβ) overproduction through impacting the procession of amyloid precursor protein (APP). Wild type mouse Neuro-2a cells (N2a/WT) and N2a stably expressing human APP695 (N2a/APP695) cells were treated with spinosin for 24 h. The levels of APP protein and secreted enzymes closely related to APP procession were examined by western blot analysis. Oxidative stress related proteins, such as nuclear factor-erythroid 2-related factor 2 (Nrf2), and heme oxygenase-1 (HO-1) were detected by immunofluorescence assay and western blot analysis, respectively. The intracellular reactive oxygen species (ROS) level was analyzed by flow cytometry, the levels of Aβ1-42 were determined by ELISA kit, and Thioflavin T (ThT) assay was used to detect the effect of spinosin on Aβ1-42 aggregation. The results showed that ROS induced the expression of ADAM10 and reduced the expression of BACE1, while spinosin inhibited ROS production by activating Nrf2 and up-regulating the expression of HO-1. Additionally, spinosin reduced Aβ1-42 production by impacting the procession of APP. In addition, spinosin inhibited the aggregation of Aβ1-42. In conclusion, spinosin reduced Aβ1-42 production by activating the Nrf2/HO-1 pathway in N2a/WT and N2a/APP695 cells. Therefore, spinosin is expected to be a promising treatment of AD.

Evaluation of Safeness and Functionality in Applied Technologies for Mobile Messengers

  • Cho, Gyu-Sang
    • 한국컴퓨터정보학회논문지
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    • 제21권8호
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    • pp.29-39
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    • 2016
  • Recently, KakaoTalk users seek secure messengers with fears of 'possible' censorship over a mobile messenger. Instead German messenger "Telegram" is gaining popularity in South Korea. Are the known as secure messengers actually secure? In this paper, we evaluate secure mobile messengers in terms of private information protection. We establish the fourteen criteria to evaluate the functionality of messenger apps including communication encryption in transit, the possibility of leakage of decrypted messages via server, an encryption algorithm, a key exchange algorithm, an ephemeral message application, etc. Line, Telegram, Snapchat, WhatsApp, Wickr, Facebook Messenger and KakaoTalk, which have many worldwide and domestic users, are to be targeted. Wickr is ranked at the top of the evaluation, followed by Telegram and Line but KakaoTalk and Snapchat are ranked at the bottom of the evaluation list.

Exploring the Attractive Factors of App Icons

  • Ho, Chun-Heng;Hou, Kai-Chun
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제9권6호
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    • pp.2251-2270
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    • 2015
  • More than 1 billion mobile apps (smartphone applications) have been released worldwide. Competition among developers of apps that are available in app stores has intensified because of increasing demand. App icons with an appealing design can instantly increase attention. Miryoku Engineering methods were used and combined with the Kansei interface model to examine the relationship between attractive icons and users. The evaluation grid method (EGM) is a qualitative method that was used to evaluate the icons, and Quantification Theory Type I is a quantitative method that was used to analyze the influence of design elements in icons. Eight attractive factors of app icons were determined using EGM, and six specific factors were identified using questionnaires. The quantitative results indicated that user cognition and emotion were influenced by the various design elements. The impact on the attractive factors of a single design element differed among users with diverse backgrounds. App icons were assessed on the basis of aesthetics to identify attractive factors and thereby assist designers in understanding and implementing design elements and improving the overall visual appeal of their apps. The result of this investigation is crucial to the presentation of app icons in online app stores.

Evaluation of the Effect of Educational Smartphone App for Nursing Students

  • Yeon, Seunguk;Seo, Sukyong
    • International Journal of Advanced Culture Technology
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    • 제7권2호
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    • pp.60-66
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    • 2019
  • The purpose of this study was to compare the effect of educational smartphone app with the effect of learning using conventional paper material. We developed an educational app for nursing students to learn how to read blood pressure and how to take a pulse. Evaluated was the effect of the app-based education by measuring the short term memory (right after the education), the long term memory (a week later) and the satisfaction. 25 college nursing students participated for the experiment group using the app-based education and 25 for the control group using paper-based education. We applied for statistical analysis Fisher's exact test and Independent t-test. The satisfaction of the app user's appeared significantly higher than that of the paper material user's (t=2.322, p=0.024). The short term memory score was 0.23 points higher in the experimental group (6.46 points) than in the control group (6.23 points), which was not statistically significant (t =0.422, p =0.675). Similar result came for the long term memory (t=1.006, p=0.320). After adjusting for the effect of a college grade using ANCOVA, the effect on memory was significantly higher in the experiment group. There might be differences in learning ability between the experimental and the control groups.

가상 체험기반 헤어스타일 앱 'Hair Style Magic Mirror' 을 중심으로 본 사용자 데이터 해석과 평가분석 (Analysis and Evaluation of Users' Rating Targeted on Virtual experienced App, 'Hair Style Magic Mirror App')

  • 김태진;진성아
    • 한국산학기술학회논문지
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    • 제13권12호
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    • pp.6105-6110
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    • 2012
  • 스마트기기는 우리의 삶을 더욱 지능화시키며 편리함을 더해준다. 고수준 인터페이스와 LTE와 같은 네크워크 고속화는 체험 가능한 App을 창출하고 있다. 본 연구에서는 Hair Style App 'Hair Style Magic Mirror App'을 경험한 사용자의 비정형데이터와 감성정보의 정보를 토대로 분석하고 평가한 후, 향후 체험형 앱이 갖추어야 할 바람직한 개선방향을 제안하였다. Chi-Square 분석결과 App버전은 사용자 만족도에 영향을 주지 못하였고 기술통계 분석결과 무료버전 보다 유료버전의 사용자 만족도가 높음을 확인할 수 있었다. 감성정보 분석결과 사용자는 App의 현실성을 중요하게 생각하고 있었다. 향후 App 개발자는 현실성과 감성에 초점을 맞춰 App 개발을 해야 할 것이다.

시간관리 모바일 앱 사용성 평가도구 개발에 관한 연구 (A Study on the Development of Mobile APP Usability Evaluation Tool for Time Management)

  • 이샘;남원석
    • 한국융합학회논문지
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    • 제12권12호
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    • pp.19-29
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    • 2021
  • 수차례의 산업혁명과 기술의 발달로 현대인들에게 시간적 여유로움이 생겼지만 이에 반해 현대인들 중 75% 이상이 '시간부족 현상' 문제를 겪고 있다. 이에 본 논문에서는 현대인들의 효율적인 시간 관리를 위한 모바일 앱(APP) 서비스 개선의 여지가 있다고 판단되어 사용성 평가도구 개발 연구를 진행하였다. 먼저 각 목적이 상이한 시간관리 앱 6개의 사례조사를 통해 현황 및 구조를 분석하였으며, 사용편의성에 관한 선행연구를 진행하여 조작성, 인지성, 사용자적합성, 작업오류의 최소화, 공유성으로 총 5가지의 평가원칙을 정립하였다. 이를 기반으로 시간관리 모바일 앱 사용성 평가항목 초안을 작성하였으며, 이것을 5년 이상, 10년 이하의 디자인 전문가 집단을 대상으로 3차례의 델파이조사를 통해 총 44개의 사용성 평가도구 항목을 도출하였다. 그 결과 직관적인 화면 및 메뉴구성과 사용자의 콘텐츠 인지가 가장 중요한 요소로 평가되었으며, 기능적 측면에서의 사용자의 오류 방지 및 사용성을 위한 메인 콘텐츠 화면의 구조, 기능 개선의 필요성 등의 결론이 도출되었다. 본 연구는 기존 시간관리 모바일 앱 사용성 개선에 기여할 뿐만 아니라 향후 효율적인 시간관리 및 목적 증진을 위한 통합적 시간관리 플랫폼 설계 연구의 자료로 활용될 것이며, 나아가 앱 개발 또는 사용성에 관한 학술적 참고자료로 활용될 수 있기를 기대한다.

Comparative Study of U-Healthcare Applications between Google Play Store and Apple iTunes App Store in Korea

  • Nam, Sang-Zo
    • International Journal of Contents
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    • 제10권3호
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    • pp.1-8
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    • 2014
  • In this paper, we collect and analyze the status of mobile phone applications (hereafter apps) in the healthcare and fitness category of the Apple iTunes App Store and Google Play Store. We determine the number of apps and analyze statistical aspects such as classifications, age rating, fees, and user evaluation of the popular items. As of September 30, 2013, there were 236 popular apps available from iTunes. Google Play offered 720 apps. We discover that apps for healthcare and fitness are diverse. Apps for physical exercise have the greatest popularity. The proportions of apps that are suitable for all ages among the Google and iTunes popular apps are 55.8% and 89.4%, respectively. The user evaluation of apps in iTunes is relatively less positive. We determine that the proportion of paid apps to free apps in Google is higher than that of the apps in iTunes. We perform hypothesis tests and find statistically significant differences in age rating and perceived satisfaction between the apps of the Apple iTunes App Store and Google Play Store. However, we find no meaningful differences in the classification and price of the apps between the two app stores. We perform hypothesis tests to verify the differences in age rating and perceived satisfaction between the paid and free apps within and across the Google Play Store and iTunes App Store. There are statistically significant differences in the age rating between the paid and free apps in the Google play store, between the Google free and iTunes free apps, between the Google paid and iTunes paid apps, between the Google free and iTunes paid apps, and between the Google paid and iTunes free apps. There are statistically significant differences in the perceived satisfaction between the Google free and iTunes free apps, between the Google paid and iTunes paid apps, between the Google free and iTunes paid apps, and between the Google paid and iTunes free apps.

사용자 이동성과 센서 밀집도를 고려한 앱 프로파일 기반 센서 레지스트리 시스템의 성능 평가 (Performance Evaluation of App Profile-based Sensor Registry System considering User Mobility and Sensor Density)

  • 김종현;이석훈;정동원
    • 한국정보기술학회논문지
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    • 제17권4호
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    • pp.87-97
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    • 2019
  • SRS는 특정 센서 네트워크 및 센서 유형에 독립적으로 센서 데이터의 의미를 모바일 기기에 즉시적으로 처리하기 위해 제안되었다. 하지만 새로운 센서 데이터를 수신할 때 마다 센서 데이터 검사 연산을 반복적으로 수행하게 되어 성능 저하를 야기한다. 이러한 문제점을 해결하기 위해 앱 프로파일 기반 SRS가 제안되었다. 앱 프로파일 기반 SRS는 프로파일을 통해 SRS 문제점을 개선하였으나 가상 시뮬레이션 환경에서 실험이 이루어졌으며 이 후 실시간 환경에서 실험을 하였으나 동적인 다양한 요소들을 고려하여 실험하지 못했다. 따라서 이 논문은 사용자의 이동성, 센서 밀집도 등의 인자를 고려하여 실험 평가를 실제 환경에서 수행하고 실험 결과의 분석을 통해 앱 프로파일 기반 SRS의 성능을 평가한다. 그 결과 앱 프로파일 기반 SRS는 밀집도와 센서의 종류에 큰 영향을 받으며, 센서 노드 수는 영향을 받지 않는 것을 알 수 있다.