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1인가구 생활패턴이 반영된 세탁O2O서비스 사용성 평가 연구 -런드리고와 세탁특공대를 중심으로-
정자영 ( Jeong¸ Ja Young ),장경국 ( Chang¸ Kyoung Kook ) 한국기초조형학회 2021 기초조형학연구 Vol.22 No.5
최근 1인가구 증가와 타임푸어족의 등장으로 세탁 O2O 서비스의 이용률이 높아지고 있다. 본 연구는, 세탁 O2O 서비스인 런드리고와 세탁특공대 애플리케이션을 중심으로 사용성 평가 비교분석을 통해 향후 20~30대 1인가구를 위한 세탁 O2O 서비스 사용성 개선을 위한 필요사항을 도출하고 의(衣)활동 이론 발전에도 기여하는데 목적이 있다. 연구방법으로는 1차로 문헌연구를 통해 1인가구의 현황, 라이프스타일, 세탁 O2O서비스의 시장 현황 및 전망 등을 고찰하였으며, 2차로 사용성 평가를 위해 피터모빌(Peter Morville)의 허니콤 모델(The Honeycomb Model) 7가지 요소를 기초하여 1인가구의 전체비율 중 가장 많은 비중을 차지하고 있는 20~30대 남녀를 대상으로 심층인터뷰를 진행 하였다. 사용성 평가 결과, 전체적으로 세탁특공대 앱의 서비스 사용성이 더 높은 것으로 나타났다. 특히 사용성, 가치성에 있어서는 1) 세탁물을 맡기고 수거하는 과정에 있어서 시간이 단축되는 점. 2) 출퇴근 시간에 제약 없이 사용가능한 점. 3) 빨래를 해야 하는 귀찮음을 해소했다는 점에 대하여 두 애플리케이션 모두 20~30대 1인가구 피실험자들에게 높은 평가를 받았다. 이러한 사용성 평가를 바탕으로 다음과 같은 개선점을 얻을 수 있었다. 첫째, 각 세탁 건별에 대한 평가와 업체에 대한 평가가 필요하다. 둘째, 그 평가에 따른 피드백 서비스가 필요하다. 셋째, 개인정보보호를 강화하여 신뢰성을 높여야 한다. 본 연구 결과를 통해 국내 세탁 O2O 서비스 향상에 기여하기를 기대하며, 향후 연구에서는 보다 폭넓은 1인가구의 연령층을 분석하여 1인가구의 의(衣)활동 발전에 기여할 수 있는 사용성 연구가 나오기를 기대한다. As the number of one-person households and the Timepoors has arisen in recent years, the utilisation rate of laundry O2O services is increasing. The purpose of this study is to derive the need to improve the usability of laundry O2O services for one-person households in their 20s and 30s and contribute to the development of clothing activity theory through comparative analysis of usability evaluation focused on the mobile application ‘Laundrygo’ and ‘Getwashswat’ application. A literature study examined the current status of one-person households, there’s lifestyle, market status and prospects of laundry O2O services. In addition, based on seven elements of Peter Morville's User Experience Honeycomb, an in-depth interview was conducted for those in their 20s and 30s, which account for the highest proportion of one-person households. As a result of the usability evaluation, the ‘Getwashswat’ application has higher service usability than ‘Laundrygo’. Especially in the field of usable and valuable, both applications received high scores from one-person households in their 20s and 30s for the following reasons : 1) Time reduction in the process of drop-off and collecting laundry. 2) Unlimited use during rush hour. 3) Hassle-Free from Laundry. Based on this usability assessment, the following improvement results were obtained through the data analysis : First, evaluation on the service supplier and laundry case is required. Second, feedback services according to the assessment are needed. Third, it is necessary to increase reliability by strengthening privacy. The results of this study are expected to lead to improving domestic laundry O2O services. In future studies, researcher hopes to analyse the whole age group of one-person households to contribute to the development of clothing activities in one-person households.
정자영(Jayoung Jung),이자영(Jayoung Lee),이재승(Jaeseung Lee) 한국HCI학회 2009 한국HCI학회 학술대회 Vol.2009 No.2
무선인터넷 기술발달로 대용량의 웹사이트를 휴대전화에 전송하는 것이 가능해지고 디스플레이도 3 인치 이상의 WVGA 고해상도 제품이 출시되고 있으며 망개방 이라는 시대적 요구와 맞물리면서 모바일 풀브라우저가 주목 받고 있다. 그러나, 유선 인터넷 환경의 웹사이트를 좁은 휴대전화 화면에 그대로 구현하여 사용하기란 쉽지 않다. 따라서, 본 연구는 모바일 풀브라우저의 현황을 살펴보고 사용성 검증을 통해 현재 서비스 환경에 최적화된 모바일 풀브라우저 UI 제안을 목적으로 한다. 이를 위해 국내외 주요 이동통신사의 풀브라우저에 적용된 공통적인 기본 UI 요소를 검토 하여 추출 하였다. 그 후 사용자 조사를 통해 추출된 기본 UI 요소들을 비교해 보고 각 기능의 중요도 및 기능 별 최적안을 도출하였다. 마지막으로 사용자 조사를 통해 검증된 이슈를 기반으로 향후 모바일 풀브라우저 인터페이스를 제안한다. 본 연구는 여러 모바일 풀브라우저의 기능별 방식에 대하여 사용자의 실제 경험을 통해 검증함으로써 향후 모바일 풀브라우저 개발에 있어 사용성을 향상 시키는 자료로 활용 될 수 있을 것이다.
Parameter Identification of an Unknown Object in Human-Robot Collaborative Manipulation
Jayoung Jang,Jong Hyeon Park 제어로봇시스템학회 2020 제어로봇시스템학회 국제학술대회 논문집 Vol.2020 No.10
In human-robot collaborative manipulation of an object, if the robot knows the intention of the human, the efficiency of the work would greatly increase. For the robot to know of the human intention, it should have the information of the force applied by the human, which can be more accurately if it can estimate the inertial and dimensional parameters online. However, the force applied by the human will disturb the parameter identification process. This paper presents a strategy to identify the inertial and dimensional parameters of an unknown object online for physical human-robot interactions. Extended Kalman filter is used for identification under the assumption that the force applied by the human is an unknown external disturbance. This approach was evaluated in simulations of physical human-robot object manipulation task.
Jayoung Kim,Jihong Lee 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
This paper focuses on real-time estimation of optimal control parameters (maximum friction coefficient and optimal slip ratio) in order to secure maneuverability of a mobile robot on rough terrain. This paper is largely divided into two parts; 1) material identification, 2) estimation of optimal control parameters. Firstly, since maximum friction coefficient and optimal slip ratio indicate different characteristics depending on material types, prior to estimation of optimal control parameters, it is needed to identify which material a robot is moving on. Thus, this paper proposes a method for material identification based on soil resistance impeding motion of a robot. Material identification includes Gaussian classifier to stochastically identify one of the material types. Secondly, an estimator is developed so as to predict maximum friction coefficient and optimal slip ratio which are crucial parameters for a mobile robot while effectively traversing rough terrain. Friction-slip curves based on experimental data from a test for analysis of a wheel-terrain interaction are employed to make a prediction model for estimation of optimal control parameters. Results of material identification and estimation of optimal control parameters are verified through one-wheel driving experiments on three kinds of material types: sand, gravel and grass using the wheel-terrain interaction testbed.
( Jayoung Lim ),( Yang Ree Kim ),( Hyo-jin Lee ),( Hang Joo Cho ),( Sung-jeep Kim ),( Kyoung Ho Choi ) 대한내과학회 2016 대한내과학회 추계학술대회 Vol.2016 No.1
Background:?Infection remains a major cause of mortality and morbidity after trauma. The emergence of multidrug-resistant organisms (MDRO) is responsible for limited therapeutic options. The objective of this study was to identify the prevalence and risk factors of MDRO infections in multiple trauma patients.?Methods:?We conducted a single-center, retrospective study of 820 adult patients admitted to a trauma center of Uijeongbu St. Mary's Hospital in Korea from 2014 to 2015. Only first positive culture data per organism from each specimen were analyzed. Organism considered a contaminant was excluded.?Results:?Total 515 positive cultures from 125 patients were obtained. Carbapenem-resistant Acinetobacter baummanii (CRAB, 22.1%), methicillin-resistant Staphylococcus aureus (MRSA, 14.2%), carbapenem-resistant Pseudomonas aeruginosa (2.1%), vancomycin-resistant Enterococci (1.7%), and carbapenem-resistant Enterobacteriaceae (0.6%) were isolated in multiple trauma patients. Multivariate logistic regression analysis found that, abdomen Abbreviated Injury Scale ≥3 (odds ratio [OR]=2.83; 95% confidence interval [CI]=1.07-7.89; p=0.039), intensive care treatment (OR=5.07; 95% CI=1.67-17.89; p=0.006), number of operative procedures (OR=3.49; 95% CI=1.33-9.96; p=0.014), and pneumonia (OR=5.51; 95% CI=1.97-16.96; p=0.002) were risk factors for MDRO infections. Age, sex, preexisting medical condition, Glasgow Coma Scale, type of injury, and invasive device usage were not statistically related to MDRO infections. By Kaplan-Meier analysis, the in-hospital mortality was higher in the MDRO group (18.8% vs. 5.41%; p=0.053).Conclusions:?Multiple trauma patients had high rates of CRAB and MRSA. This research suggests that trauma patients with severe abdominal injury, intensive care treatment, multiple operative procedures and pneumonia are at increased risk for MDRO infections. Recognition of the identified risk factors may help to guide the appropriate use of empirical antibiotics. Keywords: Prevalance, Multi-drug resistance, Risk factors
Kinematics Analysis and Motion Planning For a 7-DOF Redundant Industrial Robot Manipulator
Jayoung Kim,Minyoung Sin,Jihong Lee 제어로봇시스템학회 2011 제어로봇시스템학회 국제학술대회 논문집 Vol.2011 No.10
This paper proposes application methods for utilizing a 7-DOF robot manipulator called YH050 in industrial settings. For finding an optimal method to solve the inverse kinematics problem, we propose three methods: numerical approach, geometrical approach and combined approach for inverse kinematics solution. Also, for efficient application of the robot in a work zone, we present motion planning to avoid singularities, obstacles, and to occupy minimal workspace. In this paper, these studies are theoretically explained and then experimentally verified.
Jayoung Kim,Seonghwan Jeong,Jong-Oh Park,Han-Sol Lee,Cheong Lee,Chang-Sei Kim 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.3
Herein, we present a novel electromagnetic field control methodology against a heating problem that can perform both desired actuation and lower heating of an electromagnet actuator comprising several electromagnets for magnetically actuated microrobot. The proposed method can balance the heating temperature of each electromagnet in a multiple coiled electromagnetic actuator which should be sustained in a similar state to prevent overheating while maintaining a desired magnetic force. Based on the conventional magnetic field model, the controller employs a real-time updated minimum weighted norm of induced currents by considering the physically limited current source and temperature feedback of each coil. The simulation results indicate that the heating temperature is lower than the conventional method during the same operation time. The performance of capsule motion and respective heating temperature through the proposed method was validated in ex-vivo experiments in a pig intestine for the actual clinical application. During the whole motion cycle of a wireless magnetic capsule in the intestine sample, the measured heating temperature could be significantly reduced. Hence, the temperatures of all the electromagnets were balanced at a similar level without any extremely high temperatures for specific electromagnets. Eventually, the proposed control method can extend the operating time of the conventional electromagnetic actuator and enhance the capability of real application.