• Journal of Information Processing Systems
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• 제19권2호
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• pp.219-231
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• 2023

Intelligent applications are crucial for increasing the popularity of shared urban electric bicycles (EBs). Building an application platform architectural system that can satisfy independent user operations is critical for increasing the intelligent usage of shared EBs. Consequently, we collected online reviews of shared EB applications, conducted semantic processing and sentiment analysis, and refined the positive and negative review data for each function. The positive and negative review indices of each function were calculated using the formulae for positive and negative review indices of product functions, thereby determining the functions that need to be improved. Each function of the Shared EB application was improved according to its business process. The main contributions of this study are to build a user requirement architecture system for the Shared EB application with five dimensions and 22 functions using the Delphi method to design the user interface (UI) of this application based on user satisfaction evaluation results; to create a high-fidelity dynamic interaction prototype and compare user satisfaction before and after improving the Shared EB application functions. The testing results indicate that the changes in the UI significantly improve the user experience satisfaction of the urban Shared EB application, with the positive experience index increasing by 69.21% and the negative experience index decreasing by 75.85% overall. This information can be directly used by relevant companies to improve the functions of the Shared EB application.

• 한국멀티미디어학회논문지
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• 제20권8호
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• pp.1200-1207
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• 2017

Sensors in a smartphone can be used to measure various physical quantities. In this paper, we propose an object localization scheme in a three dimenstional using a smart phone. The proposed scheme estimates the location of an object by observing it from several different points. The direction to the target object and the locations of the observation points are collected at each observation point using the location sensor and the orientation sensor in the smartphone. Based on these observations, the proposed scheme derives three dimensional line of sight vectors and estimates the location of the target object that minimizes the estimation error. We implemented the proposed scheme on an Android smartphone and tested its performance by estimating the height of a building and characteristics of the proposed approach.

• 한국멀티미디어학회논문지
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• 제21권1호
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• pp.69-76
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• 2018

Augmented Reality (AR) technology has rapidly been applied to various application areas including e-learning and e-education. Focusing on the design and development of android tablet application, this study targeted to develop infant music education using AR technology. We used a tablet instead of personal computer because it is more easily accessible and more convenient. Our system allows infant users to play with teaching aids like blocks or puzzles to mimic musical play like game. The user sets the puzzle piece on the playground in front of the tablet and presses the play button. Then, the system extracts a region of interest among the images acquired by internal camera and separates the foreground image from the background image. The block recognition software analyzes, recognizes and shows the result using AR technology. In order to have reasonably working recognition ratio, we did experiments with more than 5,000 frames of actual playing scenarios. We found that the recognition rate can be secured up to 95%, when the threshold values are selected well using various condition parameters.

• 한국전자통신학회논문지
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• 제8권10호
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• pp.1515-1521
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• 2013

본 논문에서는 저항성 누설전류, 과전류, 대기전력 차단기능을 갖는 지능형 콘센트와 연동하는 안드로이드 운영체제의 전력관리 어플리케이션을 개발한다. 개발된 전력관리 어플리케이션을 이용하면 언제, 어디서나 콘센트에서 발생될 수 있는 누전으로 인한 전기화재 및 감전 등을 모니터링하고, 콘센트에 공급되는 전력을 제어하여 실내의 가전기기에 대한 ON/OFF 제어 및 낭비되고 있는 대기전력을 손쉽게 차단할 수 있도록 하였다.

• 한국IT서비스학회지
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• 제21권2호
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• pp.127-143
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• 2022

In this study, a usability evaluation tool was developed for "ICANDUINO", a VR-based mobile application for maker education, and usability evaluation was conducted with a heuristic survey method for experts. The usability evaluation tool was derived through literature review and validated by two experts. It consisted of seven domains (effectiveness, efficiency, satisfaction, learnability, memorability, error, and cognitive load) and twenty-five sub-items. As a result of the usability evaluation conducted for six experts, it received the highest score in the domain of efficiency and the lowest score in the domain of error. The improvements of ICANDUINO were derived by analyzing the qualitative opinions of experts in each of the four stages (training, coding, tinkering, and testing) of making. the results of this study can be used as a guideline when evaluating the usability of a mobile app for education.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 추계학술대회
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• pp.608-611
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• 2022

기존 내비게이션 어플은 주로 과속단속을 알려주는 기능이 주기능이며, 블랙아이스 위치를 경고해주지는 않는다. 만약 내비게이션 어플이 이 기능을 수행한다면 교통사고 저감에 큰 효과를 발휘할 것이다. 따라서 본 논문에서는 블랙아이스를 탐지하는 방법과 이를 경고해주는 내비게이션 어플을 제안하고자 한다.

• 월간포장계
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• 통권257호
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• pp.118-120
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• 2014

신선농산물의 포장 설계를 위한 스마트폰 application(app. 앱)이 개발되어 업계의 주목을 끌고 있다. 이 신선농산물 포장 설계 앱은 경남대학교 식품생명학과 식품포장학연구실이 농림축산식품부 연구비지원 사업인 지능형농식품포장연구센터(주관기관 동국대학교) 과제의 일부로 개발된 것으로 향후, 농산물의 생산자, 포장업계, 유통업계에 광범위하게 사용되는 것은 물론 소비자에게는 신선한 고품질 농산물의 제공할 것으로 기대되고 있다. 이번 앱 개발의 중심에 있는 이동선 교수에게 개발 과정과 함께 식품 포장업계의 현황 및 전망에 대한 견해를 들어보았다.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2003년도 춘계학술대회
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• pp.647-664
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• 2003

[ $\circ$ ] Enterprise architecture is essential for ROI of e-Enterprise. $\circ$ An architecture is described from business, application, data and technical views and these must be complete and consistent. $\circ$ UML-based CBD is currently the best approach to obtaining architecture-centric, flexible and interoperable systems. $\circt$ Reuse of architecture, components, shared services and app frameworks is key to achieving both quality and productivity. $\circ$ Web service, the NBT, cannot be tapped without the architecting capability. $\circ$ Architects with world-class domain as well as software engineering knowledge are key to success of Korean software industry.

• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2017년도 공동학술발표회
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• pp.86-86
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• 2017

• 한방안이비인후피부과학회지
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• 제32권1호
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• pp.32-41
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• 2019

Objective : The purpose of this study is to develop a personal health record(PHR) application of atopic dermatitis in Korean Medicine(KM). Methods : We have identified the items necessary to provide an PHR application that helps to record and manage the symptoms of an atopic dermatitis in KM. We also derived the symptom collection process and method and applied it to the application. Results : In this study, the types of symptoms collected for atopic dermatitis were derived. Symptoms include daily check, stool/urine/sleep, daily emotion, meal management, symptom photographs, SCORAD, quality of life, progress check, original symptom, pediatric health check, weakness check, and subjective symptoms. The recording cycle can be divided into the first, daily, weekly, specific day, and subjective. We developed the PHR application of atopic dermatitis in KM by deriving the type of symptoms and symptom recording process. The app organized menus into dashboards, checklists, daily checks, and health records. Conclusions : We developed a PHR application for atopic dermatitis by deriving symptom collection items of atopic dermatitis and developing symptom collection process and collection technique. The app does not make an accurate diagnosis of atopic dermatitis symptoms, but it helps facilitate symptom collection and helps to identify or predict a person's health condition. It can also be used for medical treatment through sharing symptoms with Korean medicine. Patients are able to communicate in both directions on a daily, weekly, self-aware basis, at the request of a doctor, to record their symptoms and use them for medical purposes. If the doctor asks for a progress check to refer to the next examination, it can be written through the system. This manages atopic dermatitis in daily life and can be used in the clinical field.