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고수민,이정수,이병기,박대영 한국통신학회 2013 Journal of communications and networks Vol.15 No.6
In this paper, we propose a new feedback scheme calledmode selection-based feedback by scheduling probability prediction(SPP-MF) for channel state feedback in OFDMA downlinksystem. We design the scheme such that it determines the moredesirable feedback mode among selective feedback by schedulingprobability prediction (SPP-SF) mode and bitmap feedbackby scheduling probability prediction (SPP-BF) mode, by calculatingand comparing the throughputs of the two modes. In bothfeedback modes, each user first calculates the scheduling probabilityof each subchannel (i.e., the probability that a user wins thescheduling competition for a subchannel) and then forms a feedbackmessage based on the scheduling probability. Specifically, inthe SPP-SF mode, each user reports the modulation and codingscheme (MCS) levels and indices of its best S subchannels in termsof the scheduling probability. In the SPP-BF mode, each user determinesits scheduling probability threshold. Then, it forms abitmap for the subchannels according to the scheduling probabilitythreshold and sends the bitmap along with the threshold. Numericalresults reveal that the proposed SPP-MF scheme achievessignificant performance gain over the existing feedback schemes.
대학생의 창업교육이 창업의지에 미치는 영향 연구: 팀내 전공다양성을 조절효과로 하여
고수민,한유진 한국창업학회 2022 한국창업학회지 Vol.17 No.2
본 연구의 목적은 대학 및 정부가 제공하는 창업교육을 받은 대학생을 대상으로 팀내 전공다양성을 조절변수로 하여 대학생의 창업교육이 창업의지에 미치는 영향을 분석하는 것이다. 조사목적과 연구범위를 고려하여 창업교육을 받은 대학생들의 설문응답을 최종 표본으로 활용하였으며, 다중회귀분석하였다. 연구 결과 교육 참여 동기의 하위요인인 활동지향형 동기, 창업가 역량의 하위요인인 기회인식 역량, 멘토링 기능의 하위요인인 역할모델 기능이 전공다양성을 조절효과로 하여 창업의지에 정의 영향을 미치는 것으로 나타났다. 반면, 교육 만족도는 전공다양성을 조절효과로 하여 창업의지에 부의 영향을 미치는 것으로 나타났다. 본 연구는 Teachman 수식을 활용하여 선행연구에서 미비하게 다루었던 전공다양성을 측정하였고, 창업팀 내 전공다양성이 대학생의 창업의지를 증가시킨다는 실증적 증거를 제시했다는 점에서 의의를 가진다. 대학을 중심으로 한 창업생태계 선순환을 위하여, 본 연구를 기반으로 한 대학생 창업 교육이 활성화되기를 기대한다.
5단계 자율주행 모빌리티 실내 기능제어 위치 도출을 위한 사용자 경험 디자인 연구 -아이트래킹 실험을 중심으로-
고수민,류민서,이채은,이옥근,박기철 한국기초조형학회 2023 기초조형학연구 Vol.24 No.6
The purpose of this study is to study the user experience design that derives the vehicle function control area according to the position of each seat among the interior seat positions of the 5-stage autonomous driving mobility using an eye tracker. When the environment of the 5th stage of autonomous driving is reached, the driver's activities in the vehicle will increase as soon as he or she escapes from driving. Therefore, the importance of mobility interior design and usability to enhance the user experience of passengers will increase. The operation method and position of functions, convenience devices, and buttons inside the vehicle greatly influence the user experience. Since future mobility interiors can be freely arranged, it is difficult to predict seat positions and function operation methods and positions. In this study, a new seat position was derived based on previous studies, and based on this, a 1:1 study model was produced by referring to the dimensions of the Hyundai Motor's Staria model. Participants in the experiment were driver license holders in their 20s and 30s, and a total of 15 people participated in the experiment, 7 men (46.6%) and 8 women (53.3%). After the subject was asked to wear a glasses-type eye tracker Toby Pro Glass 3, when sitting in each seat, they were asked to perform the task of operating the function button in the vehicle within the given control area. The subject's eye movement in which the function control area was searched was analyzed using a heat map and a gauge plot method. The result value of what control area the subjects wanted to control each function for each seat was derived. In addition, the difference according to the driving skill level was analyzed by dividing it into two groups according to the driving skill level of the subjects. It is expected that the user trend by seat position according to the function derived through this study can be used as a useful reference for the interior design and space composition of future autonomous driving mobility.
오프라인 사용자 경험 향상을 위한 대형마트 모바일 애플리케이션 서비스디자인 제안 - 위치기반 서 비스를 중심으로
고수민,김은영 한국기초조형학회 2024 기초조형학연구 Vol.25 No.1
Through the COVID-19 pandemic, consumers' consumption patterns have shifted towards a preference for online purchases over offline purchases, significantly impacting the offline retail industry. Now, hypermarkets need to focus on developing competitive content to compete online platform, rather than competing with traditional or other offline retail industry. Accordingly, this study aims to propose a mobile application service design to improve the user experience in offline hypermarkets through a service design methodology. Through a review of previous studies, the research investigated theoretical foundations of technologies that can maximize advantages in the offline environment. The status of existing hypermarket applications in Korea was also examined. For user survey, an online survey was conducted for 5 days on user experience in offline hypermarkets. Subjects were recruited from various mobile and online platforms, regardless of gender, age, or region, and a total of 251 people responded. In addition, in-depth on-site interviews were conducted to investigate specific pane points and needs of users based on qualitative data. Based on the data derived from the user survey, keywords were classified and grouped according to the commonalities of user experience characteristics, and two types of personas were produced and customer journey maps were prepared. In this process, the idea of the service function was specified, and the system function was divided into purchase plan, mart entry stage, shopping stage, payment and exit stage. After that, user interface design that can efficiently reflect these functions was conducted. This study analyzed data by conducting quantitative and qualitative surveys on users who have experienced offline hypermarkets. In addition, it is meaningful to propose a service that can strengthen offline characteristics and competitiveness compared to online by providing a service that can improve the user experience in offline hypermarkets by utilizing the service design methodology.
SNS 마케팅 특성이 MZ세대의 외모관리행동과 구매만족도에 미치는 영향: 지각된 유용성의 매개효과
고수민 ( Su-min Go ),문승현 ( Seung-hyeon Mun ),이재숙 ( Jae-sook Lee ) 한국미용학회 2024 한국미용학회지 Vol.30 No.2
This study analyzes the impact of the SNS marketing characteristics of the MZ generation on perceived usefulness, appearance management behavior, and purchase satisfaction, and further analyzes the mediating effect of perceived usefulness. The conclusions drawn through a series of research procedures are as follows. First, SNS marketing characteristics were found to have a statistically significant positive (+) effect on the perceived usefulness, appearance management behavior, and purchase satisfaction of the MZ generation. The MZ generation's perceived usefulness of SNS was found to have a statistically significant positive (+) effect on purchase satisfaction. Third, Third, in the effect of SNS marketing characteristics on purchase satisfaction of the MZ generation, perceived usefulness was found to have a statistically significant partial mediating effect.